Keil5\uff1a<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-10.png\")
<\/figure>\n\n\n\nKeil5 C51\u548cKeil5 MDK\u7684\u533a\u522b<\/p>\n\n\n\n
\u4e24\u8005\u90fd\u662fKeil\u7cfb\u5217\u8f6f\u4ef6\uff0c\u4f46\u524d\u8005\u662f\u7528\u6765\u5f00\u53d151\u5355\u7247\u673a\u7684\uff0c\u540e\u8005\u662f\u7528\u6765\u5f00\u53d1ARM\u7cfb\u5217\uff0c\u6bd4\u5982STM32\u7684\u3002<\/p>\n\n\n\n
STC-ISP\u4e0b\u8f7d\u7a0b\u5e8f<\/h3>\n\n\n\n\u5f00\u53d1\u677f\u8d44\u6599\u3001\u539f\u7406\u56fe<\/h3>\n\n\n\n\u5355\u7247\u673a\u4ecb\u7ecd<\/h2>\n\n\n\n\n\u5355\u7247\u673a\uff0c\u82f1\u6587Micro Controller Unit\uff0c\u7b80\u79f0MCU<\/p>\n\n\n\n
\u5185\u90e8\u96c6\u6210\u4e86CPU\u3001RAM\u3001ROM\u3001\u5b9a\u65f6\u5668\u3001\u4e2d\u65ad\u7cfb\u7edf\u3001\u901a\u8baf\u63a5\u53e3\u7b49\u4e00\u7cfb\u5217\u7535\u8111\u7684\u5e38\u7528\u786c\u4ef6\u529f\u80fd\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u4efb\u52a1\u662f\u4fe1\u606f\u91c7\u96c6\uff08\u4f9d\u9760\u4f20\u611f\u5668\uff09\u3001\u5904\u7406\uff08\u4f9d\u9760CPU\uff09\u548c\u786c\u4ef6\u8bbe\u5907\uff08\u4f8b\u5982\u7535\u673a\u3001LED\u7b49\uff09\u7684\u63a7\u5236\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u8ddf\u8ba1\u7b97\u673a\u76f8\u6bd4\uff0c\u5355\u7247\u673a\u7b97\u662f\u4e00\u4e2a\u8896\u73cd\u7248\u8ba1\u7b97\u673a\uff0c\u4e00\u4e2a\u82af\u7247\u5c31\u80fd\u6784\u6210\u5b8c\u6574\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u3002\u4f46\u5728\u6027\u80fd\u4e0a\uff0c\u4e0e\u8ba1\u7b97\u673a\u76f8\u5dee\u751a\u8fdc\uff0c\u4f46\u5355\u7247\u673a\u6210\u672c\u4f4e\u3001\u4f53\u79ef\u5c0f\u3001\u7ed3\u6784\u7b80\u5355\uff0c\u5728\u751f\u6d3b\u548c\u5de5\u4e1a\u63a7\u5236\u9886\u57df\u5927\u6709\u6240\u7528\u3002<\/p>\n\n\n\n
\u540c\u65f6\uff0c\u5b66\u4e60\u4f7f\u7528\u5355\u7247\u673a\u662f\u4e86\u89e3\u8ba1\u7b97\u673a\u539f\u7406\u4e0e\u7ed3\u6784\u7684\u6700\u4f73\u9009\u62e9<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u5e94\u7528\u9886\u57df\uff1a<\/h2>\n\n\n\n
\u5355\u7247\u673a\u7684\u4f7f\u7528\u9886\u57df\u5df2\u5341\u5206\u5e7f\u6cdb\uff0c\u5982\u667a\u80fd\u4eea\u8868\u3001\u5b9e\u65f6\u5de5\u63a7\u3001\u901a\u8baf\u8bbe\u5907\u3001\u5bfc\u822a\u7cfb\u7edf\u3001\u5bb6\u7528\u7535\u5668\u7b49\u3002\u5404\u79cd\u4ea7\u54c1\u4e00\u65e6\u7528\u4e0a\u4e86\u5355\u7247\u673a\uff0c\u5c31\u80fd\u8d77\u5230\u4f7f\u4ea7\u54c1\u5347\u7ea7\u6362\u4ee3\u7684\u529f\u6548\uff0c\u5e38\u5728\u4ea7\u54c1\u540d\u79f0\u524d\u51a0\u4ee5\u5f62\u5bb9\u8bcd\u2014\u2014\u201c\u667a\u80fd\u578b\u201d\uff0c\u5982\u667a\u80fd\u578b\u6d17\u8863\u673a\u7b49\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-136.png\")
<\/figure>\n\n\n\n51\u5355\u7247\u673a<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u662f\u5bf9\u517c\u5bb9\u82f1\u7279\u5c14<\/a>8051\u6307\u4ee4\u7cfb\u7edf<\/a>\u7684\u5355\u7247\u673a<\/a>\u7684\u7edf\u79f0\u3002<\/p>\n\n\n\n\u4e3b\u8981\u54c1\u724c\u53ca\u5176\u4ea7\u54c1<\/p>\n\n\n\n
\n- Intel\uff08\u82f1\u7279\u5c14<\/a>\uff09\uff1a80C31\u300180C51<\/a>\u300187C51\uff0c80C32\u300180C52\u300187C52\u7b49\uff1b<\/li>\n\n\n\n
- Atmel<\/a>\uff08\u827e\u7279\u6885\u5c14\uff09\uff1a89C51\u300189C52\u300189C2051\uff0c89S51(RC)\uff0c89S52(RC)\u7b49\uff1b<\/li>\n\n\n\n
- Philips\uff08\u98de\u5229\u6d66<\/a>\uff09\u3001\u534e\u90a6\u3001Dallas\uff08\u8fbe\u62c9\u65af\uff09\u3001Siemens\uff08\u897f\u95e8\u5b50<\/a>\uff09\u7b49\u516c\u53f8\u7684\u8bb8\u591a\u4ea7\u54c1\uff1b<\/li>\n\n\n\n
- STC\uff08\u5b8f\u6676\uff09\uff1aSTC89C51\u3001STC90C51\u3001STC11\u7cfb\u5217\u3001STC15\u7cfb\u5217\u3001STC8\u7cfb\u5217\u7b49\u3002 <\/sup><\/li>\n<\/ul>\n\n\n\n
STC89C52\u5355\u7247\u673a<\/h2>\n\n\n\n
\u6240\u5c5e\u7cfb\u5217\uff1a51\u5355\u7247\u673a\u7cfb\u5217
\u516c\u53f8\uff1aSTC\u516c\u53f8\uff0c \u4e2d\u56fd\u516c\u53f8\u3002
\u4f4d\u6570\uff1a8\u4f4d
RAM\uff1a512\u5b57\u8282
ROM\uff1a8K\uff08Flash\uff09
\u5de5\u4f5c\u9891\u7387\uff1a12MHZ<\/p>\n\n\n\n
\u547d\u540d\u89c4\u5219<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-137.png\")
<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u62c6\u89e3<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-138.png\")
<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u7ed3\u6784\u56fe<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-139.png\")
<\/figure>\n\n\n\n\u770b\u95e8\u72d7\uff1a\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u7684\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-140.png\")
<\/figure>\n\n\n\n\u5355\u7247\u673a\u7ba1\u811a\u56fe<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-141.png\")
<\/figure>\n\n\n\n\u5355\u7247\u673a\u4e0a\u65b9\u6709\u4e2a\u7f3a\u53e3\uff0c\u538b\u6746\u671d\u4e0a\u3002<\/p>\n\n\n\n
\u00b7<\/p>\n<\/div>\n\n\n\n
\u6700\u5c0f\u7cfb\u7edf<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-142.png\")
<\/figure>\n\n\n\n\u65b0\u5efa\u5de5\u7a0b\uff1a<\/h2>\n\n\n\n
Keil5\u9009\u62e9CPU\u65f6\uff0c\u9009Atmel,STC\u548cAT\u57fa\u672c\u64cd\u4f5c\u662f\u4e00\u6837\u7684\u3002\u9009\u62e9AT89C51\u6216AT89C52\u90fd\u884c\u3002\u5185\u6838\u90fd\u662f\u4e00\u6837\u7684\u3002\u4e0d\u9700\u8981\u590d\u5236\u542f\u52a8\u6587\u4ef6\uff0c\u56e0\u4e3aKeil\u5df2\u7ecf\u96c6\u6210\u4e86\u3002<\/p>\n\n\n\n
LED\u53d1\u5149\u4e8c\u6781\u7ba1 light emitting diode<\/h2>\n\n\n\n
\u7528\u6765\u7167\u660e\u3001\u5e7f\u544a\u706f\u3001\u6307\u5f15\u706f\u3001\u5c4f\u5e55\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-143-1.png\")
<\/figure>\n\n\n\n\u6392\u963b\uff0c\u7b80\u79f0RP\uff0c\uff08Resistance Pack\uff09102\u4ee3\u88681000\u6b27\uff1a10*10\u76842\u6b21\u65b9; 473\u4e3a47*1000=47K\u6b27\u3002\u6709\u65f6\u67094\u4f4d\u6570\u8868\u793a\u59821001\uff0c\u524d\u4e09\u4f4d\u4e3a\u6709\u6548\u6570\u5b57\uff0c\u7b2c4\u4f4d\u4e3a\u500d\u7387\u5373100*10=1000\u6b27\u3002\u7535\u4f4d\u5668\u6807103\u5373\u4ee3\u886810*1000=10K\u6b27\u3002\u9650\u6d41\u7535\u963b\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-145.png\")
<\/figure>\n\n\n\n\u70b9\u4eaeLED\uff0c\u8f6c\u53d8\u4e3a\u63a7\u5236\u76f8\u5e94\u5f15\u811a\u9ad8\u4f4e\u7535\u5e73\u3002 <\/p>\n\n\n\n
Keil\u9ed8\u8ba4\u4e0d\u751f\u6210.hex\u6587\u4ef6\uff0c\u9700\u8981\u914d\u7f6e\u3002<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u4e00\u4e2aLED\u706f\uff0c\u5171\u5730\u63a5\u6cd5\n#include <REGX51.H>\n\nvoid main()\n{\n P2=0x01;\n while(1)\n {\n \n }\n}<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-146.png\")
<\/figure>\n\n\n\n\/\/LED\u95ea\u70c1\u4ee3\u7801\n#include <REGX51.H>\n#include <INTRINS.H> \/\/\u5305\u542b_nop_()\u51fd\u6570\u539f\u578b\n\nvoid Delayxms(unsigned int xms)\t\t\/\/@12.000MHz\n{\n unsigned char i, j;\n while(xms--)\n {\n i = 2;\n j = 239;\n do\n {\n while (--j);\n } while (--i);\n }\n}\n\nvoid main(void)\n{\n P2=0xFF;\n while(1)\n {\n P2=0xFF;\n Delayxms(500);\n P2=0x00;\n Delayxms(500);\n }\n}<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-147.png\")
<\/figure>\n\n\n\n\u72ec\u7acb\u6309\u952e<\/h2>\n\n\n\n
\u2022\u8f7b\u89e6\u6309\u952e\uff1a\u76f8\u5f53\u4e8e\u662f\u4e00\u79cd\u7535\u5b50\u5f00\u5173\uff0c\u6309\u4e0b\u65f6\u5f00\u5173\u63a5\u901a\uff0c\u677e\u5f00\u65f6\u5f00\u5173\u65ad\u5f00\uff0c\u5b9e\u73b0\u539f\u7406\u662f\u901a\u8fc7\u8f7b\u89e6\u6309\u952e\u5185\u90e8\u7684\u91d1\u5c5e\u5f39\u7247\u53d7\u529b\u5f39\u52a8\u6765\u5b9e\u73b0\u63a5\u901a\u548c\u65ad\u5f00\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-149.png\")
<\/figure>\n\n\n\nsfr\u5168\u79f0\u4e3a\uff1aspecial function register\uff08\u7ffb\u8bd1\u4e3a\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\uff09\u3002
sbit\uff1a\u4f4d\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u5934\u6587\u4ef6REGX.H \u6709\u4f4d\u58f0\u660e\uff0cREG.H\u6ca1\u6709\u4f4d\u58f0\u660e\u3002<\/p>\n\n\n\n
\/\/\u6309\u4e0b\u6309\u952eLED\u4eae\uff0c\u677e\u624bLED\u706d\n#include <REGX52.H>\n\nvoid main()\n{\n P2=0x00;\n while(1)\n {\n if(P0_0==0)\n {\n P2_0=1;\n }\n else\n {\n P2_0=0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\u6309\u952e\u7684\u6296\u52a8<\/h3>\n\n\n\n
\u5bf9\u4e8e\u673a\u68b0\u5f00\u5173\uff0c\u5f53\u673a\u68b0\u89e6\u70b9\u65ad\u5f00\u3001\u95ed\u5408\u65f6\uff0c\u7531\u4e8e\u673a\u68b0\u89e6\u70b9\u7684\u5f39\u6027\u4f5c\u7528\uff0c\u4e00\u4e2a\u5f00\u5173\u5728\u95ed\u5408\u65f6\u4e0d\u4f1a\u9a6c\u4e0a\u7a33\u5b9a\u5730\u63a5\u901a\uff0c\u5728\u65ad\u5f00\u65f6\u4e5f\u4e0d\u4f1a\u4e00\u4e0b\u5b50\u65ad\u5f00\uff0c\u6240\u4ee5\u5728\u5f00\u5173\u95ed\u5408\u53ca\u65ad\u5f00\u7684\u77ac\u95f4\u4f1a\u4f34\u968f\u4e00\u8fde\u4e32\u7684\u6296\u52a8\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-150.png\")
<\/figure>\n\n\n\n\u6d88\u6296\uff1a\u786c\u4ef6\u6d88\u6296; \u8f6f\u4ef6\u6d88\u6296\u3002<\/p>\n\n\n\n
\u68c0\u6d4b\u677e\u624b\uff1a<\/p>\n\n\n\n
\/\/\u6309\u952e\u63a7\u5236LED\u706f\u4eae\u706d\u72b6\u6001\u5207\u6362\nvoid main()\n{\n P2=0x00;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(20);\/\/\u6d88\u6296\n while(P0_0==0); \/\/\u677e\u624b\u68c0\u6d4b\n Delayxms(20);\n P2_0=~P2_0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\/\/\u7b2c\u4e00\u4e2a\u6309\u952e\u63a7\u5236\u5411\u5de6\u6d41\u6c34\u706f\uff0c\u7b2c\u4e8c\u4e2a\u6309\u952e\u63a7\u5236\u5411\u53f3\u6d41\u6c34\u706f\nvoid main()\n{\n unsigned char LEDNum=0;\n P2=0x01;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n LEDNum++;\n if(LEDNum>=8)\n LEDNum=0;\n P2=0x01<<LEDNum;\n }\n if(P0_1==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n if(LEDNum==0)\n LEDNum=8;\n LEDNum--;\n if(LEDNum<0)\n LEDNum=8;\n P2=0x01<<LEDNum;\n }\n }\n}<\/code><\/pre>\n\n\n\n\/\/\u72ec\u7acb\u6309\u952e\u83b7\u53d6\u952e\u503c\n#include <REGX51.H>\n#include \"Delay.h\"\n\n\/**\n * @brief \u83b7\u53d6\u72ec\u7acb\u6309\u952e\u952e\u7801\n * @param \u65e0 \n * @retval \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\uff0c\u8303\u56f40-8\uff0c\u65e0\u6309\u952e\u6309\u4e0b\uff0c\u8fd4\u56de0;\n *\/\nunsigned char Key()\n{\n unsigned char KeyNumber=0;\n \n if(P0_0==0){Delayxms(50);while(P0_0==0);Delayxms(50);KeyNumber=1;}\n if(P0_1==0){Delayxms(50);while(P0_1==0);Delayxms(50);KeyNumber=2;}\n if(P0_2==0){Delayxms(50);while(P0_2==0);Delayxms(50);KeyNumber=3;}\n if(P0_3==0){Delayxms(50);while(P0_3==0);Delayxms(50);KeyNumber=4;}\n if(P0_4==0){Delayxms(50);while(P0_4==0);Delayxms(50);KeyNumber=5;}\n if(P0_5==0){Delayxms(50);while(P0_5==0);Delayxms(50);KeyNumber=6;}\n if(P0_6==0){Delayxms(50);while(P0_6==0);Delayxms(50);KeyNumber=7;}\n if(P0_7==0){Delayxms(50);while(P0_7==0);Delayxms(50);KeyNumber=8;}\n \n return KeyNumber;\n}\n<\/code><\/pre>\n\n\n\n\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u7279\u6b8a\u7684\u5b58\u50a8\u5668\uff0c\u4ee58\u4e2a\u4e3a\u4e00\u7ec4\uff0c\u6bcf\u4e2a\u4f4d\u540e\u9762\u90fd\u8fde\u7740\u4e00\u6839\u7ebf\u901a\u8fc7\u9a71\u52a8\u5668\u63a7\u5236\u76f8\u5e94\u7535\u8def\u3002\u9a71\u52a8\u5668\u4e3a\u4e86\u589e\u5927\u9a71\u52a8\u80fd\u529b\u3002CPU\u76f4\u63a5\u8bfb\u5199\u5bc4\u5b58\u5668\uff0c\u5bc4\u5b58\u5668\u901a\u8fc7\u9a71\u52a8\u5668\u9a71\u52a8IO\u53e3\u3002<\/p>\n\n\n\n
\u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73\u7684\u95ee\u9898\u8f6c\u5316\u4e3a\u8bfb\u5199\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u6570\u7801\u7ba1<\/h2>\n\n\n\n
\u2022LED\u6570\u7801\u7ba1\uff1a\u6570\u7801\u7ba1\u662f\u4e00\u79cd\u7b80\u5355\u3001\u5ec9\u4ef7\u7684\u663e\u793a\u5668\uff0c\u662f\u7531\u591a\u4e2a\u53d1\u5149\u4e8c\u6781\u7ba1\u5c01\u88c5\u5728\u4e00\u8d77\u7ec4\u6210\u201c8\u201d\u5b57\u578b\u7684\u5668\u4ef6<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-151.png\")
<\/figure>\n\n\n\n\u6570\u7801\u7ba1\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-152.png\")
<\/figure>\n\n\n\n\u5171\u9634\u3001\u5171\u9633\u63a5\u6cd5\u3002
\u4f4d\u9009\u3001\u6bb5\u9009\u3001\u6bb5\u7801\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-153.png\")
<\/figure>\n\n\n\n74LS138\u300174HC138\uff1a\u4e09\u516b\u8bd1\u7801\u5668<\/h3>\n\n\n\n
\u5176\u4e2dLS\u6216HC\u4ee3\u8868\u7535\u538b\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-154.png\")
<\/figure>\n\n\n\n74HC245\uff1a\u53cc\u5411\u6570\u636e\u7f13\u51b2\u5668\uff08\u53c8\u79f0\u4e3a\u9501\u5b58\u5668\uff09<\/p>\n\n\n\n
OE: output enable\u3002 \u82af\u7247\u4f7f\u80fd
DIR: direction \u65b9\u5411<\/p>\n\n\n\n
\u7535\u5bb9\uff1a\u6807\u7740104\uff0c\u5bb9\u91cf\u4e3a10 0000pF\uff0c nF uF mF F<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u52a8\u6001\u6570\u7801\u7ba1\u67d0\u4e00\u4f4d\n#include <REGX51.H>\n\/\/P2\u901a\u8fc7138\u8bd1\u7801\u5668\u4f4d\u9009\n\/\/P0\u901a\u8fc774HC573D\u6bb5\u9009\nvoid main(void)\n{\n P2=0x02; \/\/\u9009\u7b2c\u4e09\u4f4d\n \/\/\u663e\u793a\u6570\u5b576\uff0c\u9700\u8981a\u5bf9\u5e94P0_7 c\u5bf9\u5e94P0_5 d_4 e_3 f_2 g_1\u4eae\uff0c b_6 dp_0\u706d 0111 1101 7D\n P0=0x7D;\n while(1)\n { \n }\n}<\/code><\/pre>\n\n\n\n\/\/\u6307\u5b9a\u52a8\u6001\u6570\u7801\u7ba1\u7b2c\u51e0\u4f4d\u663e\u793a\u4ec0\u4e48\u6570\u5b57\uff0c\n\/\/Location \u4ece1\u52308\uff0c8\u4e2a\u6570\u7801\u7ba1\u4ece\u5de6\u5f80\u53f31\u30012\u2026\u20268\u6392\u5e8f\nvoid Nixie(unsigned char Location,unsigned char Number)\n{\n switch(Location)\n {\n case 8: P2_2=1; P2_1=1; P2_0=1;break;\n case 7: P2_2=1; P2_1=1; P2_0=0;break;\n case 6: P2_2=1; P2_1=0; P2_0=1;break;\n case 5: P2_2=1; P2_1=0; P2_0=0;break;\n case 4: P2_2=0; P2_1=1; P2_0=1;break;\n case 3: P2_2=0; P2_1=1; P2_0=0;break;\n case 2: P2_2=0; P2_1=0; P2_0=1;break;\n case 1: P2_2=0; P2_1=0; P2_0=0;break;\n default:\n break;\n };\n P0=NixieTable[Number];\n}\n<\/code><\/pre>\n\n\n\n\u6570\u7801\u7ba1\u6d88\u5f71\uff1a\u4f4d\u9009\u3001\u6bb5\u9009\uff0c\u4e0b\u4e00\u4e2a\u4f4d\u9009\uff0c\u4e0b\u4e00\u4e0b\u6bb5\u9009<\/p>\n\n\n\n
\u6570\u7801\u7ba1\u9a71\u52a8\u65b9\u5f0f<\/h3>\n\n\n\n
\u2022\u5355\u7247\u673a\u76f4\u63a5\u626b\u63cf\uff1a\u786c\u4ef6\u8bbe\u5907\u7b80\u5355\uff0c\u4f46\u4f1a\u8017\u8d39\u5927\u91cf\u7684\u5355\u7247\u673aCPU\u65f6\u95f4<\/p>\n\n\n\n
\u2022\u4e13\u7528\u9a71\u52a8\u82af\u7247\uff1a\u5185\u90e8\u81ea\u5e26\u663e\u5b58\u3001\u626b\u63cf\u7535\u8def\uff0c\u5355\u7247\u673a\u53ea\u9700\u544a\u8bc9\u5b83\u663e\u793a\u4ec0\u4e48\u5373\u53ef<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-155.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-156.png\")
<\/figure>\n\n\n\nLCD1602\u8c03\u8bd5\u5de5\u5177<\/h2>\n\n\n\n
\u4f7f\u7528LCD1602\u6db2\u6676\u5c4f\u4f5c\u4e3a\u8c03\u8bd5\u7a97\u53e3\uff0c\u63d0\u4f9b\u7c7b\u4f3cprintf\u51fd\u6570\u7684\u529f\u80fd\uff0c\u53ef\u5b9e\u65f6\u89c2\u5bdf\u5355\u7247\u673a\u5185\u90e8\u6570\u636e\u7684\u53d8\u6362\u60c5\u51b5\uff0c\u4fbf\u4e8e\u8c03\u8bd5\u548c\u6f14\u793a\u3002<\/p>\n\n\n\n
\u672c\u89c6\u9891\u63d0\u4f9b\u7684LCD1602\u4ee3\u7801\u5c5e\u4e8e\u6a21\u5757\u5316\u7684\u4ee3\u7801\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u8981\u77e5\u9053\u6240\u63d0\u4f9b\u51fd\u6570\u7684\u4f5c\u7528\u548c\u4f7f\u7528\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u4f7f\u7528LCD1602<\/p>\n\n\n\n\u51fd\u6570<\/strong><\/td>\u4f5c\u7528<\/strong><\/td><\/tr>LCD_Init();<\/td> \u521d\u59cb\u5316<\/td><\/tr> LCD_ShowChar(1,1,’A’);<\/td> \u663e\u793a\u4e00\u4e2a\u5b57\u7b26<\/td><\/tr> LCD_ShowString(1,3,”Hello”);<\/td> \u663e\u793a\u5b57\u7b26\u4e32<\/td><\/tr> LCD_ShowNum(1,9,123,3);<\/td> \u663e\u793a\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowSignedNum(1,13,-66,2);<\/td> \u663e\u793a\u6709\u7b26\u53f7\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowHexNum(2,1,0xA8,2);<\/td> \u663e\u793a\u5341\u516d\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowBinNum(2,4,0xAA,8);<\/td> \u663e\u793a\u4e8c\u8fdb\u5236\u6570\u5b57<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u77e9\u9635\u952e\u76d8<\/h2>\n\n\n\n
\u2022\u5728\u952e\u76d8\u4e2d\u6309\u952e\u6570\u91cf\u8f83\u591a\u65f6\uff0c\u4e3a\u4e86\u51cf\u5c11I\/O\u53e3\u7684\u5360\u7528\uff0c\u901a\u5e38\u5c06\u6309\u952e\u6392\u5217\u6210\u77e9\u9635\u5f62\u5f0f<\/p>\n\n\n\n
\u2022\u91c7\u7528\u9010\u884c\u6216\u9010\u5217\u7684\u201c\u626b\u63cf\u201d\uff0c\u5c31\u53ef\u4ee5\u8bfb\u51fa\u4efb\u4f55\u4f4d\u7f6e\u6309\u952e\u7684\u72b6\u6001<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-157.png\")
<\/figure>\n\n\n\n\u626b\u63cf<\/h3>\n\n\n\n
\u6570\u7801\u7ba1\u626b\u63cf\uff08\u8f93\u51fa\u626b\u63cf\uff09 \u539f\u7406\uff1a\u663e\u793a\u7b2c1\u4f4d\u2192\u663e\u793a\u7b2c2\u4f4d\u2192\u663e\u793a\u7b2c3\u4f4d\u2192\u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6570\u7801\u7ba1\u540c\u65f6\u663e\u793a\u7684\u6548\u679c<\/p>\n\n\n\n
\u77e9\u9635\u952e\u76d8\u626b\u63cf\uff08\u8f93\u5165\u626b\u63cf\uff09\u539f\u7406\uff1a\u8bfb\u53d6\u7b2c1\u884c(\u5217)\u2192\u8bfb\u53d6\u7b2c2\u884c(\u5217) \u2192\u8bfb\u53d6\u7b2c3\u884c(\u5217) \u2192 \u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6309\u952e\u540c\u65f6\u68c0\u6d4b\u7684\u6548\u679c<\/p>\n\n\n\n
\u4ee5\u4e0a\u4e24\u79cd\u626b\u63cf\u65b9\u5f0f\u7684\u5171\u6027\uff1a\u8282\u7701I\/O\u53e3\u3002<\/p>\n\n\n\n
IO\u53e3\u5f31\u4e0a\u62c9\u6a21\u5f0f<\/h3>\n\n\n\n
\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
P1\u3001P2\u3001P3\u90fd\u662f\u5f31\u4e0a\u62c9\uff0cP0\u5f00\u6f0f\u8f93\u51fa\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-158.png\")
<\/figure>\n\n\n\nKeil5\u6a21\u677f\u529f\u80fd<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-159.png\")
<\/figure>\n\n\n\n\u7a0b\u5e8f\u6ce8\u91ca\u8303\u4f8b<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-160.png\")
<\/figure>\n\n\n\n\u6700\u597d\u521b\u5efa\u4e00\u4e2a\u6ce8\u91ca\u6a21\u677f\u3002<\/p>\n\n\n\n
\u6ce8\u91ca\u7f16\u8bd1\u5668\uff0c\u6839\u636e\u7279\u5b9a\u683c\u5f0f\uff0c\u4ece\u4ee3\u7801\u4e2d\u63d0\u53d6\u6ce8\u91ca\u5f62\u6210\u7279\u5b9a\u8bf4\u660e\u6587\u6863\u3002<\/p>\n\n\n\n
\/\/20221129\u77e9\u9635\u952e\u76d8\u83b7\u53d6\u952e\u7801\n#include <REGX51.H>\n#include \"Delay.h\"\n\/**\n * @brief \u77e9\u9635\u952e\u76d8\uff0c\u8bfb\u53d6\u6309\u952e\u952e\u7801\n * @param \u65e0\n * @retval KeyNumber \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\u503c\n * \u5982\u679c\u6309\u952e\u6309\u4e0b\u4e0d\u653e\uff0c\u7a0b\u5e8f\u4f1a\u505c\u7559\u5728\u6b64\u51fd\u6570\uff0c\u677e\u624b\u7684\u4e00\u77ac\u95f4\uff0c\u8fd4\u56de\u952e\u7801\uff0c\u6ca1\u6709\u6309\u952e\uff0c\u8fd4\u56de0;\n *\/\nunsigned char MatrixKey()\n{\n unsigned char KeyNumber=0;\n \n \/\/\u6309\u5217\u626b\u63cf\n P1=0xFF;\n P1_3=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=1;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=5;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=9;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=13;}\n \n P1=0xFF;\n P1_2=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=2;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=6;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=10;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=14;}\n \n P1=0xFF;\n P1_1=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=3;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=7;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=11;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=15;}\n \n P1=0xFF;\n P1_0=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=4;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=8;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=12;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=16;}\n \n Delayxms(100);\n \n return KeyNumber;\n}<\/code><\/pre>\n\n\n\n\/\/20221129\u77e9\u9635\u952e\u76d8\u5bc6\u7801\u9501\n#include <REGX51.H>\n#include \"Delay.h\"\n#include \"LCD1602.h\"\n#include \"MatrixKey.h\"\n\nunsigned char KeyNum;\nunsigned int Password,Count;\n\n\/\/s10\u4ee3\u88680 s11\u786e\u8ba4\u952e s12\u53d6\u6d88\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Password:\");\n while(1)\n {\n KeyNum=MatrixKey();\n if(KeyNum)\n {\n if(KeyNum<=10 && Count<4) \/\/\u5982\u679c\u952e\u7801S1~S10\u6309\u4e0b\uff0c\u8f93\u5165\u5bc6\u7801\n {\n Password*=10; \/\/\u5bc6\u7801\u5de6\u79fb1\u4f4d\n Password+=KeyNum%10;\/\/\u83b7\u53d61\u4f4d\u5bc6\u7801\n Count++;\/\/\u8ba1\u6b21\u52a01\n }\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n \n if(KeyNum==11 && Count==4)\/\/\u5982\u679cS11\u6309\u952e\u6309\u4e0b\uff0c\u5224\u65ad\u662f\u5426\u662f4\u4f4d\uff0c\u5982\u679c\u662f\uff0c\u5219\u9a8c\u8bc1\u5bc6\u7801\n {\n if(Password==2345)\n {\n LCD_ShowString(1,14,\"OK \");\n }\n else\n {\n LCD_ShowString(1,14,\"ERR\");\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n }\n \n if(KeyNum==12)\/\/\u5982\u679cS12\u53d6\u6d88\n {\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n } \n }\n}\n<\/code><\/pre>\n\n\n\n\u5b9a\u65f6\u5668<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u7684\u5b9a\u65f6\u5668\u5c5e\u4e8e\u5355\u7247\u673a\u7684\u5185\u90e8\u8d44\u6e90\uff0c\u5176\u7535\u8def\u7684\u8fde\u63a5\u548c\u8fd0\u8f6c\u5747\u5728\u5355\u7247\u673a\u5185\u90e8\u5b8c\u6210<\/p>\n\n\n\n
\u5b9a\u65f6\u5668\u4f5c\u7528\uff1a<\/p>\n\n\n\n
\uff081\uff09\u7528\u4e8e\u8ba1\u65f6\u7cfb\u7edf\uff0c\u53ef\u5b9e\u73b0\u8f6f\u4ef6\u8ba1\u65f6\uff0c\u6216\u8005\u4f7f\u7a0b\u5e8f\u6bcf\u9694\u4e00\u56fa\u5b9a\u65f6\u95f4\u5b8c\u6210\u4e00\u9879\u64cd\u4f5c
\uff082\uff09\u66ff\u4ee3\u957f\u65f6\u95f4\u7684Delay\uff0c\u63d0\u9ad8CPU\u7684\u8fd0\u884c\u6548\u7387\u548c\u5904\u7406\u901f\u5ea6\u2026\u2026
\uff083\uff09\u591a\u4efb\u52a1\u5207\u6362\u5b9a\u65f6\u2026\u2026<\/p>\n\n\n\n
STC89C52\u5b9a\u65f6\u5668\u8d44\u6e90<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u4e2a\u6570\uff1a3\u4e2a\uff08T0\u3001T1\u3001T2\uff09\uff0cT0\u548cT1\u4e0e\u4f20\u7edf\u768451\u5355\u7247\u673a\u517c\u5bb9\uff0cT2\u662f\u6b64\u578b\u53f7\u5355\u7247\u673a\u589e\u52a0\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a\u5b9a\u65f6\u5668\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u5b9a\u65f6\u5668\u4e2a\u6570\u548c\u64cd\u4f5c\u65b9\u5f0f\uff0c\u4f46\u4e00\u822c\u6765\u8bf4\uff0cT0\u548cT1\u7684\u64cd\u4f5c\u65b9\u5f0f\u662f\u6240\u670951\u5355\u7247\u673a\u6240\u5171\u6709\u7684\u3002<\/p>\n\n\n\n
\u5b9a\u65f6\u671f\u6846\u56fe<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u5728\u5355\u7247\u673a\u5185\u90e8\u5c31\u50cf\u4e00\u4e2a\u5c0f\u95f9\u949f\u4e00\u6837\uff0c\u6839\u636e\u65f6\u949f\u7684\u8f93\u51fa\u4fe1\u53f7\uff0c\u6bcf\u9694\u201c\u4e00\u79d2\u201d\uff0c\u8ba1\u6570\u5355\u5143\u7684\u6570\u503c\u5c31\u589e\u52a0\u4e00\uff0c\u5f53\u8ba1\u6570\u5355\u5143\u6570\u503c\u589e\u52a0\u5230\u201c\u8bbe\u5b9a\u7684\u95f9\u949f\u63d0\u9192\u65f6\u95f4\u201d\u65f6\uff0c\u8ba1\u6570\u5355\u5143\u5c31\u4f1a\u5411\u4e2d\u65ad\u7cfb\u7edf\u53d1\u51fa\u4e2d\u65ad\u7533\u8bf7\uff0c\u4ea7\u751f\u201c\u54cd\u94c3\u63d0\u9192\u201d\uff0c\u4f7f\u7a0b\u5e8f\u8df3\u8f6c\u5230\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d\u6267\u884c\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-161.png\")
<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u5de5\u4f5c\u6a21\u5f0f<\/h3>\n\n\n\n
STC89C52\u7684T0\u548cT1\u5747\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a13\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668
\u6a21\u5f0f1\uff1a16\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a8\u4f4d\u81ea\u52a8\u91cd\u88c5\u6a21\u5f0f
\u6a21\u5f0f3\uff1a\u4e24\u4e2a8\u4f4d\u8ba1\u6570\u5668<\/p>\n\n\n\n
\u5de5\u4f5c\u6a21\u5f0f1\u6846\u56fe<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-162.png\")
SYSclk\uff1a\u7cfb\u7edf\u65f6\u949f\uff0c\u5373\u6676\u632f\u5468\u671f\uff0c\u672c\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u4e3a12MHz\u3002<\/figcaption><\/figure>\n\n\n\n\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-163.png\")
<\/figure>\n\n\n\n\u4e2d\u65ad\u7a0b\u5e8f\u6d41\u7a0b<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-164.png\")
<\/figure>\n\n\n\nSTC89C52\u7cfb\u5217\u5355\u7247\u673a\u4e2d\u65ad\u6e90<\/h3>\n\n\n\n
\u4e2d\u65ad\u6e90\u4e2a\u6570\uff1a8\u4e2a\uff08\u5916\u90e8\u4e2d\u65ad0\u3001\u5b9a\u65f6\u56680\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad1\u3001\u5b9a\u65f6\u56681\u4e2d\u65ad\u3001\u4e32\u53e3\u4e2d\u65ad\u3001\u5b9a\u65f6\u56682\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad2\u3001\u5916\u90e8\u4e2d\u65ad3\uff09\u3002
\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\uff1a4\u4e2a\u3002
\u6ce8\u610f\uff1a\u4e2d\u65ad\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u4e2d\u65ad\u8d44\u6e90\uff0c\u4f8b\u5982\u4e2d\u65ad\u6e90\u4e2a\u6570\u4e0d\u540c\u3001\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\u4e0d\u540c\u7b49\u7b49<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-165.png\")
<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u548c\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-166.png\")
<\/figure>\n\n\n\n\u6570\u5b57\u7535\u8def\u5143\u4ef6\u6807\u793a\uff1a<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-169.png\")
<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u76f8\u5173\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u5bc4\u5b58\u5668\u662f\u8fde\u63a5\u8f6f\u786c\u4ef6\u7684\u5a92\u4ecb\u3002\u5728\u5355\u7247\u673a\u4e2d\u5bc4\u5b58\u5668\u5c31\u662f\u4e00\u6bb5\u7279\u6b8a\u7684RAM\u5b58\u50a8\u5668\uff0c\u4e00\u65b9\u9762\uff0c\u5bc4\u5b58\u5668\u53ef\u4ee5\u5b58\u50a8\u548c\u8bfb\u53d6\u6570\u636e\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u6bcf\u4e00\u4e2a\u5bc4\u5b58\u5668\u80cc\u540e\u90fd\u8fde\u63a5\u4e86\u4e00\u6839\u5bfc\u7ebf\uff0c\u63a7\u5236\u7740\u7535\u8def\u7684\u8fde\u63a5\u65b9\u5f0f\u3002\u5bc4\u5b58\u5668\u76f8\u5f53\u4e8e\u4e00\u4e2a\u590d\u6742\u673a\u5668\u7684\u201c\u64cd\u4f5c\u6309\u94ae\u201d\u3002<\/p>\n\n\n\n
TCON\uff1aTimer Control, \u5b9a\u65f6\u5668\u63a7\u5236\u3002
TF\uff1aTimer Flag\uff0c\u8ba1\u6570\u5668\u5230\u8fbe\u6700\u9ad8\u503c\u65f6\uff0c\u7531\u786c\u4ef6\u7f6e1\u3002
TR: Timer Run,TR=1,\u8ba1\u7b97\u5668\u5f00\u59cb\u8fd0\u884c\u3002
EA\uff1aEnable All<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-167.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-168.png\")
<\/figure>\n\n\n\nSTP-ISP\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u81ea\u52a8\u751f\u6210\u5b9a\u65f6\u5668\u914d\u7f6e\u4ee3\u7801<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-170.png\")
<\/figure>\n\n\n\n\u5934\u6587\u4ef6<intrins.h>,_cror_\u5faa\u73af\u53f3\u79fb\uff0c_crol_\u5faa\u73af\u5de6\u79fb\u51fd\u6570<\/p>\n\n\n\n
\/\/\u5b9a\u65f6\u56680\u521d\u59cb\u5316\u53ca\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\n#include <REGX51.H>\n\n\/**\n * @brief \u5b9a\u65f6\u56680\u521d\u59cb\u5316\uff0c1\u6beb\u79d2@12Mhz\n * @param \u65e0\n * @retval \u65e0\n *\/\n\/\/\u53ef\u4ee5\u4f7f\u7528\u8f6f\u4ef6STP-ISP\u8f6f\u4ef6\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u529f\u80fd\u751f\u6210\u914d\u7f6e\u4ee3\u7801\nvoid Timer0_Init()\n{\n \tTMOD &= 0xF0;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x01;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTF0 = 0;\t\t\/\/\u6e05\u9664TF0\u6807\u5fd7\n\tTR0 = 1;\t\t\/\/\u5b9a\u65f6\u56680\u5f00\u59cb\u8ba1\n ET0=1;\n EA=1;\n PT0=0;\n}\n\n\/\/Timer0\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\uff0c\n\/\/void Timer0_Routine() interrupt 1\n\/\/{\n\/\/ static unsigned int T0Count;\n\/\/ TL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/ T0Count++;\n\/\/ if(T0Count>=1000)\n\/\/ {\n\/\/ T0Count=0;\n\/\/ P2_0=~P2_0;\n\/\/ }\n\/\/}<\/code><\/pre>\n\n\n\n\u4e32\u53e3\u901a\u4fe1<\/h2>\n\n\n\n
\u4e32\u53e3\u662f\u4e00\u79cd\u5e94\u7528\u5341\u5206\u5e7f\u6cdb\u7684\u901a\u8baf\u63a5\u53e3\uff0c\u4e32\u53e3\u6210\u672c\u4f4e\u3001\u5bb9\u6613\u4f7f\u7528\u3001\u901a\u4fe1\u7ebf\u8def\u7b80\u5355\uff0c\u53ef\u5b9e\u73b0\u4e24\u4e2a\u8bbe\u5907\u7684\u4e92\u76f8\u901a\u4fe1\u3002
\u5355\u7247\u673a\u7684\u4e32\u53e3\u53ef\u4ee5\u4f7f\u5355\u7247\u673a\u4e0e\u5355\u7247\u673a\u3001\u5355\u7247\u673a\u4e0e\u7535\u8111\u3001\u5355\u7247\u673a\u4e0e\u5404\u5f0f\u5404\u6837\u7684\u6a21\u5757\u4e92\u76f8\u901a\u4fe1\uff0c\u6781\u5927\u7684\u6269\u5c55\u4e86\u5355\u7247\u673a\u7684\u5e94\u7528\u8303\u56f4\uff0c\u589e\u5f3a\u4e86\u5355\u7247\u673a\u7cfb\u7edf\u7684\u786c\u4ef6\u5b9e\u529b\u3002
51\u5355\u7247\u673a\u5185\u90e8\u81ea\u5e26UART\uff08Universal Asynchronous Receiver Transmitter\uff0c\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff09\uff0c\u53ef\u5b9e\u73b0\u5355\u7247\u673a\u7684\u4e32\u53e3\u901a\u4fe1\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-171.png\")
<\/figure>\n\n\n\n\u63a5\u53e3\u53ca\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-172.png\")
<\/figure>\n\n\n\n\u786c\u4ef6\u7535\u8def<\/h3>\n\n\n\n
\u7b80\u5355\u53cc\u5411\u4e32\u53e3\u901a\u4fe1\u6709\u4e24\u6839\u901a\u4fe1\u7ebf\uff08\u53d1\u9001\u7aefTXD\u548c\u63a5\u6536\u7aefRXD\uff09\u3002TXD: transmit exchange data\u3002TXD\u4e0eRXD\u8981\u4ea4\u53c9\u8fde\u63a5\u3002\u5f53\u53ea\u9700\u5355\u5411\u7684\u6570\u636e\u4f20\u8f93\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e00\u6839\u901a\u4fe1\u7ebf\u3002\u5f53\u7535\u5e73\u6807\u51c6\u4e0d\u4e00\u81f4\u65f6\uff0c\u9700\u8981\u52a0\u7535\u5e73\u8f6c\u6362\u82af\u7247\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-173.png\")
<\/figure>\n\n\n\n\u7535\u5e73\u6807\u51c6<\/h3>\n\n\n\n
\u7535\u5e73\u6807\u51c6\u662f\u6570\u636e1\u548c\u6570\u636e0\u7684\u8868\u8fbe\u65b9\u5f0f\uff0c\u662f\u4f20\u8f93\u7ebf\u7f06\u4e2d\u4eba\u4e3a\u89c4\u5b9a\u7684\u7535\u538b\u4e0e\u6570\u636e\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u4e32\u53e3\u5e38\u7528\u7684\u7535\u5e73\u6807\u51c6\u6709\u5982\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n
TTL\u7535\u5e73\uff1a+5V\u8868\u793a1\uff0c0V\u8868\u793a0\u3002 TTL\uff1atransistor transistor logic\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS232\u7535\u5e73\uff1a-3~-15V\u8868\u793a1\uff0c+3~+15V\u8868\u793a0\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS485\u7535\u5e73\uff1a\u4e24\u7ebf\u538b\u5dee+2~+6V\u8868\u793a1\uff0c-2~-6V\u8868\u793a0\uff08\u5dee\u5206\u4fe1\u53f7\uff1acan\u3001usb\u90fd\u662f\u5dee\u5206\u4fe1\u53f7\uff09\u53ef\u4f20\u8f93\u6700\u59271000\u7c73\u8ddd\u79bb\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u901a\u4fe1\u63a5\u53e3\u6bd4\u8f83<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-174.png\")
\u6b64\u5916\u8fd8\u6709CAN\u3001USB\u7b49\u3002<\/figcaption><\/figure>\n\n\n\n\u5168\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u5728\u540c\u4e00\u65f6\u523b\u4e92\u76f8\u4f20\u8f93\u6570\u636e
\u534a\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u4e92\u76f8\u4f20\u8f93\u6570\u636e\uff0c\u4f46\u5fc5\u987b\u5206\u65f6\u590d\u7528\u4e00\u6839\u6570\u636e\u7ebf
\u5355\u5de5\uff1a\u901a\u4fe1\u53ea\u80fd\u6709\u4e00\u65b9\u53d1\u9001\u5230\u53e6\u4e00\u65b9\uff0c\u4e0d\u80fd\u53cd\u5411\u4f20\u8f93<\/p>\n\n\n\n
\u5f02\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u5404\u81ea\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387
\u540c\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u9760\u4e00\u6839\u65f6\u949f\u7ebf\u6765\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387<\/p>\n\n\n\n
\u603b\u7ebf\uff1a\u8fde\u63a5\u5404\u4e2a\u8bbe\u5907\u7684\u6570\u636e\u4f20\u8f93\u7ebf\u8def\uff08\u7c7b\u4f3c\u4e8e\u4e00\u6761\u9a6c\u8def\uff0c\u628a\u8def\u8fb9\u5404\u4f4f\u6237\u8fde\u63a5\u8d77\u6765\uff0c\u4f7f\u4f4f\u6237\u53ef\u4ee5\u76f8\u4e92\u4ea4\u6d41\uff09<\/p>\n\n\n\n
51\u5355\u7247\u673a\u7684UART<\/h3>\n\n\n\n
STC89C52\u67091\u4e2aUART<\/p>\n\n\n\n
STC89C52\u7684UART\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a\u540c\u6b65\u79fb\u4f4d\u5bc4\u5b58\u5668
\u6a21\u5f0f1\uff1a8\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a
\u6a21\u5f0f3\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8<\/p>\n\n\n\n
\u4e32\u53e3\u53c2\u6570\u53ca\u65f6\u5e8f\u56fe<\/h3>\n\n\n\n
\u6ce2\u7279\u7387\uff1a\u4e32\u53e3\u901a\u4fe1\u7684\u901f\u7387\uff08\u53d1\u9001\u548c\u63a5\u6536\u5404\u6570\u636e\u4f4d\u7684\u95f4\u9694\u65f6\u95f4\uff09\u3002\u6bd4\u7279\u7387\uff1a
\u68c0\u9a8c\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u9a8c\u8bc1
\u505c\u6b62\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u5e27\u95f4\u9694<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-175.png\")
8\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-176.png\")
9\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n\u4e32\u53e3\u6a21\u5f0f\u56fe<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-177.png\")
SBUF\uff1a\u4e32\u53e3\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u4e0a\u662f\u4e24\u4e2a\u72ec\u7acb\u7684\u5bc4\u5b58\u5668\uff0c\u4f46\u5360\u7528\u76f8\u540c\u7684\u5730\u5740\u3002\u5199\u64cd\u4f5c\u65f6\uff0c\u5199\u5165\u7684\u662f\u53d1\u9001\u5bc4\u5b58\u5668\uff0c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u8bfb\u51fa\u7684\u662f\u63a5\u6536\u5bc4\u5b58\u5668\u3002<\/figcaption><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-178.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-179.png\")
<\/figure>\n\n\n\n\/\/\u5355\u7247\u673aUART.c\u4ee3\u780120221130\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x40;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n<\/code><\/pre>\n\n\n\n\/\/\u5355\u7247\u673a1\u79d2\u5411\u7535\u8111\u53d1\u9001\u4e00\u4e2a\u6570\u636e20221130\n#include <REGX52.H>\n#include \"Delay.h\"\n#include \"UART.h\"\n\nunsigned char Sec;\n\nvoid main()\n{\n UART_Init();\n \n\twhile(1)\n\t{\n\t\tUART_SendByte(Sec);\n Sec++;\n Delayxms(1000);\n\t}\n}\n<\/code><\/pre>\n\n\n\n\/\/\u4e32\u53e3\u63a5\u6536\u6570\u636e\u4ee3\u7801\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x50;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n EA=1; \/\/\u542f\u52a8\u4e2d\u65ad\u529f\u80fd\n ES=1; \/\/\u5168\u80fd\u4e32\u4e32\u53e3\u4e2d\u65ad\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n\n\/\n\n\/\/\u4e32\u53e3\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6a21\u677f\n\/\/void UART_Routine() interrupt 4\n\/\/{\n\/\/ if(RI==1)\/\/\u63a5\u6536\u4e2d\u65ad\n\/\/ {\n\n\/\/ RI=0;\n\/\/ }\n\/\/ \n\/\/}<\/code><\/pre>\n\n\n\n\u6ce2\u7279\u7387\u8ba1\u7b97\uff1a<\/h3>\n\n\n\n
TL1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c
TH1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c<\/p>\n\n\n\n
0xF3\u4e3a234\uff0c\u81f3256\u670913\u4e2a\u6570\u3002\u572812T\u6a21\u5f0f\u4e0b\uff0c\u65f6\u949f\u6bcf1um\u8ba1\u4e00\u6b21\u6570\uff0c13\u5fae\u79d2\u6ea2\u51fa\u4e00\u6b21\u30021\/13us = 0.07692 Mhz\u3002 76920\/16=4807.69Hz 7.69\/4800=0.16\u8bef\u5dee\u3002<\/p>\n\n\n\n
\u6570\u636e\u663e\u793a\u6a21\u5f0f<\/h3>\n\n\n\n
HEX\u6a21\u5f0f\/\u5341\u516d\u8fdb\u5236\u6a21\u5f0f\/\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7684\u5f62\u5f0f\u663e\u793a\u3002
\u6587\u672c\u6a21\u5f0f\/\u5b57\u7b26\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7f16\u7801\u540e\u7684\u5f62\u5f0f\u663e\u793a\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f<\/h2>\n\n\n\n
LED\u70b9\u9635\u5c4f\u7531\u82e5\u5e72\u4e2a\u72ec\u7acb\u7684LED\u7ec4\u6210\uff0cLED\u4ee5\u77e9\u9635\u7684\u5f62\u5f0f\u6392\u5217\uff0c\u4ee5\u706f\u73e0\u4eae\u706d\u6765\u663e\u793a\u6587\u5b57\u3001\u56fe\u7247\u3001\u89c6\u9891\u7b49\u3002LED\u70b9\u9635\u5c4f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u516c\u5171\u573a\u5408\uff0c\u5982\u6c7d\u8f66\u62a5\u7ad9\u5668\u3001\u5e7f\u544a\u5c4f\u4ee5\u53ca\u516c\u544a\u724c\u7b49\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f\u5206\u7c7b
\u6309\u989c\u8272\uff1a\u5355\u8272\u3001\u53cc\u8272\u3001\u5168\u5f69
\u6309\u50cf\u7d20\uff1a8*8\u300116*16\u7b49\uff08\u5927\u89c4\u6a21\u7684LED\u70b9\u9635\u901a\u5e38\u7531\u5f88\u591a\u4e2a\u5c0f\u70b9\u9635\u62fc\u63a5\u800c\u6210\uff09\u3002<\/p>\n\n\n\n
\u663e\u793a\u539f\u7406<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-1.png\")
<\/figure>\n\n\n\nLED\u70b9\u9635\u5c4f\u7684\u7ed3\u6784\u7c7b\u4f3c\u4e8e\u6570\u7801\u7ba1\uff0c\u53ea\u4e0d\u8fc7\u662f\u6570\u7801\u7ba1\u628a\u6bcf\u4e00\u5217\u7684\u50cf\u7d20\u4ee5\u201c8\u201d\u5b57\u578b\u6392\u5217\u800c\u5df2\u3002
LED\u70b9\u9635\u5c4f\u4e0e\u6570\u7801\u7ba1\u4e00\u6837\uff0c\u6709\u5171\u9634\u548c\u5171\u9633\u4e24\u79cd\u63a5\u6cd5\uff0c\u4e0d\u540c\u7684\u63a5\u6cd5\u5bf9\u5e94\u7684\u7535\u8def\u7ed3\u6784\u4e0d\u540c\u3002
LED\u70b9\u9635\u5c4f\u9700\u8981\u8fdb\u884c\u9010\u884c\u6216\u9010\u5217\u626b\u63cf\uff0c\u624d\u80fd\u4f7f\u6240\u6709LED\u540c\u65f6\u663e\u793a\u3002<\/p>\n\n\n\n
74HC595<\/h3>\n\n\n\n
74HC595\u662f\u4e32\u884c\u8f93\u5165\u5e76\u884c\u8f93\u51fa\u7684\u79fb\u4f4d\u5bc4\u5b58\u5668\uff0c\u53ef\u75283\u6839\u7ebf\u8f93\u5165\u4e32\u884c\u6570\u636e\uff0c8\u6839\u7ebf\u8f93\u51fa\u5e76\u884c\u6570\u636e\uff0c\u591a\u7247\u7ea7\u8054\u540e\uff0c\u53ef\u8f93\u51fa16\u4f4d\u300124\u4f4d\u300132\u4f4d\u7b49\uff0c\u5e38\u7528\u4e8eIO\u53e3\u6269\u5c55\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-2.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-3.png\")
<\/figure>\n\n\n\nOE\uff1aoutput enable,\u4f4e\u7535\u5e73\u6709\u6548\u3002
RCLK\uff1aregister clock, \u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u9501\u5b58\u3002
SRCLR: serial clear, \u4e32\u884c\u6e05\u96f6\uff0c\u4f4e\u7535\u5e73\u6709\u6548\u3002
SRCLK\uff1a\u4e32\u884c\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u79fb\u4f4d\u3002
SER\uff1a\u4e32\u884c\u6570\u636e
QH’: \u591a\u7247\u7ea7\u8054\u3002<\/p>\n\n\n\n
C51\u7684sfr\u3001sbit<\/h3>\n\n\n\n
\u2022sfr\uff08special function register\uff09\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asfr P0 = 0x80;<\/p>\n\n\n\n
\u58f0\u660eP0\u53e3\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u5730\u5740\u4e3a0x80<\/p>\n\n\n\n
\u2022sbit\uff08special bit\uff09\uff1a\u7279\u6b8a\u4f4d\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asbit P0_1 = 0x81; \u6216 sbit P0_1 = P0^1;<\/p>\n\n\n\n
\u58f0\u660eP0\u5bc4\u5b58\u5668\u7684\u7b2c1\u4f4d<\/p>\n\n\n\n
\u2022\u53ef\u4f4d\u5bfb\u5740\/\u4e0d\u53ef\u4f4d\u5bfb\u5740\uff1a\u5728\u5355\u7247\u673a\u7cfb\u7edf\u4e2d\uff0c\u64cd\u4f5c\u4efb\u610f\u5bc4\u5b58\u5668\u6216\u8005\u67d0\u4e00\u4f4d\u7684\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u7ed9\u51fa\u5176\u7269\u7406\u5730\u5740\uff0c\u53c8\u56e0\u4e3a\u4e00\u4e2a\u5bc4\u5b58\u5668\u91cc\u67098\u4f4d\uff0c\u6240\u4ee5\u4f4d\u7684\u6570\u91cf\u662f\u5bc4\u5b58\u5668\u6570\u91cf\u76848\u500d\uff0c\u5355\u7247\u673a\u65e0\u6cd5\u5bf9\u6240\u6709\u4f4d\u8fdb\u884c\u7f16\u7801\uff0c\u6545\u6bcf8\u4e2a\u5bc4\u5b58\u5668\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u662f\u53ef\u4ee5\u4f4d\u5bfb\u5740\u7684\u3002\u5bf9\u4e0d\u53ef\u4f4d\u5bfb\u5740\u7684\u5bc4\u5b58\u5668\uff0c\u82e5\u8981\u53ea\u64cd\u4f5c\u5176\u4e2d\u4e00\u4f4d\u800c\u4e0d\u5f71\u54cd\u5176\u5b83\u4f4d\u65f6\uff0c\u53ef\u7528\u201c&=\u201d\u3001\u201c|=\u201d\u3001\u201c^=\u201d\u7684\u65b9\u6cd5\u8fdb\u884c\u4f4d\u64cd\u4f5c<\/p>\n\n\n\n
DS1302\u4ecb\u7ecd<\/h2>\n\n\n\n
DS1302\u662f\u7531\u7f8e\u56fdDALLAS\u516c\u53f8\u63a8\u51fa\u7684\u5177\u6709\u6d93\u7ec6\u7535\u6d41\u5145\u7535\u80fd\u529b\u7684\u4f4e\u529f\u8017\u5b9e\u65f6\u65f6\u949f\u82af\u7247\u3002\u5b83\u53ef\u4ee5\u5bf9\u5e74\u3001\u6708\u3001\u65e5\u3001\u5468\u3001\u65f6\u3001\u5206\u3001\u79d2\u8fdb\u884c\u8ba1\u65f6\uff0c\u4e14\u5177\u6709\u95f0\u5e74\u8865\u507f\u7b49\u591a\u79cd\u529f\u80fd\u3002
RTC(Real Time Clock)\uff1a\u5b9e\u65f6\u65f6\u949f\uff0c\u662f\u4e00\u79cd\u96c6\u6210\u7535\u8def\uff0c\u901a\u5e38\u79f0\u4e3a\u65f6\u949f\u82af\u7247\u3002
\u5355\u7247\u673a\u672c\u8eab\u65f6\u949f\u4e0d\u7cbe\u786e\u3001\u6d6a\u8d39CPU\u65f6\u95f4\u3001\u6389\u7535\u4e22\u5931\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-4.png\")
<\/figure>\n\n\n\nDS3231, \u6bd4DS1302\u7cbe\u5ea6\u9ad8\uff0c\u5185\u90e8\u81ea\u7cbe\u632f\u3002DS12C887.<\/p>\n\n\n\n
\u5f15\u811a\u5b9a\u4e49\u548c\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-5.png\")
<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-6.png\")
<\/figure>\n\n\n\n\u5bc4\u5b58\u5668\u5b9a\u4e49<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-7.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-8.png\")
<\/figure>\n\n\n\n\u65f6\u5e8f\u5b9a\u4e49<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-9.png\")
<\/figure>\n\n\n\nBCD\u7801<\/h3>\n\n\n\n
BCD\u7801\uff08Binary Coded Decimal\u200e\uff09\uff0c\u75284\u4f4d\u4e8c\u8fdb\u5236\u6570\u6765\u8868\u793a1\u4f4d\u5341\u8fdb\u5236\u6570<\/p>\n\n\n\n
\u4f8b\uff1a0001 0011\u8868\u793a13\uff0c1000 0101\u8868\u793a85\uff0c0001 1010\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
\u5728\u5341\u516d\u8fdb\u5236\u4e2d\u7684\u4f53\u73b0\uff1a0x13\u8868\u793a13\uff0c0x85\u8868\u793a85\uff0c0x1A\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
BCD\u7801\u8f6c\u5341\u8fdb\u5236\uff1aDEC=BCD\/16*10+BCD%16; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\u5341\u8fdb\u5236\u8f6cBCD\u7801\uff1aBCD=DEC\/10*16+DEC%10; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\/\/20221202 DS1302\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\nsbit DS1302_SCLK=P3^6;\nsbit DS1302_IO=P3^4;\nsbit DS1302_CE=P3^5;\n\n#define DS1302_SECOND 0x80\n#define DS1302_MINUTE 0x82\n#define DS1302_HOUR 0x84\n#define DS1302_DATE 0x86\n#define DS1302_MONTH 0x88\n#define DS1302_DAY 0x8A\n#define DS1302_YEAR 0x8C\n#define DS1302_WP 0x8E\n\nunsigned char DS1302_Time[]={22,12,2,0,59,55,4}; \/\/\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u661f\u671f\n\nvoid DS1302_Init(void)\n{\n DS1302_CE=0;\n DS1302_SCLK=0;\n}\n\nvoid DS1302_WriteByte(unsigned char Command,Data)\n{\n unsigned char i;\n DS1302_CE=1;\n \n\n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Data&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n DS1302_CE=0;\n}\n\nunsigned char DS1302_ReadByte(unsigned char Command)\n{\n unsigned char i,Data=0x00;\n Command |= 0x01;\n DS1302_CE=1;\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=0;\n DS1302_SCLK=1;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n if(DS1302_IO){Data|=(0x01<<i);}\n }\n DS1302_CE=0;\n DS1302_IO=0;\n return Data; \n}\n\nvoid DS1302_SetTime(void)\n{\n DS1302_WriteByte(DS1302_WP,0x00);\/\/\u5173\u95ed\u5199\u4fdd\u62a4\n DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]\/10*16+DS1302_Time[0]%10);\n DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]\/10*16+DS1302_Time[1]%10);\n DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]\/10*16+DS1302_Time[2]%10);\n DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]\/10*16+DS1302_Time[3]%10);\n DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]\/10*16+DS1302_Time[4]%10);\n DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]\/10*16+DS1302_Time[5]%10);\n DS1302_WriteByte(DS1302_DAY,DS1302_Time[6]\/10*16+DS1302_Time[6]%10);\n DS1302_WriteByte(DS1302_WP,0x00); \/\/\u6253\u5f00\u5199\u4fdd\u62a4\n}\n\nvoid DS1302_ReadTime(void)\n{\n unsigned char Temp;\n Temp=DS1302_ReadByte(DS1302_YEAR);\n DS1302_Time[0]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MONTH);\n DS1302_Time[1]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DATE);\n DS1302_Time[2]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_HOUR);\n DS1302_Time[3]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MINUTE);\n DS1302_Time[4]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_SECOND);\n DS1302_Time[5]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DAY);\n DS1302_Time[6]=Temp\/16*10+Temp%16;\n}<\/code><\/pre>\n\n\n\n\/\/main.c LCD1602\u663e\u793a\u65f6\u949f\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"DS1302.h\"\n#include \"Delay.h\"\n\nvoid main()\n{\n LCD_Init();\n DS1302_Init();\n \n LCD_ShowString(1,1,\" - -\");\n LCD_ShowString(2,1,\" : :\");\n \n DS1302_SetTime();\n\n\twhile(1)\n\t{\n\t DS1302_ReadTime();\n LCD_ShowNum(1,1,DS1302_Time[0],2);\n LCD_ShowNum(1,4,DS1302_Time[1],2);\n LCD_ShowNum(1,7,DS1302_Time[2],2);\n LCD_ShowNum(2,1,DS1302_Time[3],2);\n LCD_ShowNum(2,4,DS1302_Time[4],2);\n LCD_ShowNum(2,7,DS1302_Time[5],2);\n\t}\n}\n<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u8702\u9e23\u5668<\/h2>\n\n\n\n
\u8702\u9e23\u5668\u662f\u4e00\u79cd\u5c06\u7535\u4fe1\u53f7\u8f6c\u6362\u4e3a\u58f0\u97f3\u4fe1\u53f7\u7684\u5668\u4ef6\uff0c\u5e38\u7528\u6765\u4ea7\u751f\u8bbe\u5907\u7684\u6309\u952e\u97f3\u3001\u62a5\u8b66\u97f3\u7b49\u63d0\u793a\u4fe1\u53f7\u3002
\u8702\u9e23\u5668\u6309\u9a71\u52a8\u65b9\u5f0f\u53ef\u5206\u4e3a\u6709\u6e90\u8702\u9e23\u5668\u548c\u65e0\u6e90\u8702\u9e23\u5668\u3002
\u6709\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u81ea\u5e26\u632f\u8361\u6e90\uff0c\u5c06\u6b63\u8d1f\u6781\u63a5\u4e0a\u76f4\u6d41\u7535\u538b\u5373\u53ef\u6301\u7eed\u53d1\u58f0\uff0c\u9891\u7387\u56fa\u5b9a\u3002
\u65e0\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u4e0d\u5e26\u632f\u8361\u6e90\uff0c\u9700\u8981\u63a7\u5236\u5668\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u624d\u53ef\u53d1\u58f0\uff0c\u8c03\u6574\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u7684\u9891\u7387\uff0c\u53ef\u53d1\u51fa\u4e0d\u540c\u9891\u7387\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-10.png\")
<\/figure>\n\n\n\n\u9a71\u52a8\u7535\u8def<\/h3>\n\n\n\n
\u4e09\u6781\u7ba1\u9a71\u52a8<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-11.png\")
<\/figure>\n\n\n\n\u96c6\u6210\u7535\u8def\u9a71\u52a8<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-12.png\")
<\/figure>\n\n\n\nULN2003\u82af\u7247<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-13.png\")
<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u4ecb\u7ecd<\/h2>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-14.png\")
<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u7b80\u5316\u6a21\u578b<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-15.png\")
PROM\u4e2d\u84dd\u8272\u4e8c\u7ea7\u7ba1\u5bb9\u6613\u88ab\u51fb\u7a7f\u3002\u4e00\u65e6\u51fb\u7a7f\uff0c\u5c31\u4e0d\u80fd\u66f4\u6539\u4e86\u3002\u6240\u4ee5\u79f0\u4e3a\u70e7\u5f55\u7a0b\u5e8f\u3002<\/figcaption><\/figure>\n\n\n\nAT24C02\u4ecb\u7ecd<\/h2>\n\n\n\n
AT24C02\u662f\u4e00\u79cd\u53ef\u4ee5\u5b9e\u73b0\u6389\u7535\u4e0d\u4e22\u5931\u7684\u5b58\u50a8\u5668\uff0c\u53ef\u7528\u4e8e\u4fdd\u5b58\u5355\u7247\u673a\u8fd0\u884c\u65f6\u60f3\u8981\u6c38\u4e45\u4fdd\u5b58\u7684\u6570\u636e\u4fe1\u606f\u3002
\u5b58\u50a8\u4ecb\u8d28\uff1aE2PROM\u3002
\u901a\u8baf\u63a5\u53e3\uff1aI2C\u603b\u7ebf\u3002
\u5bb9\u91cf\uff1a256\u5b57\u8282<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-17.png\")
<\/figure>\n\n\n\n\u5f15\u811a<\/strong><\/td>\u529f\u80fd<\/strong><\/td><\/tr>VCC\u3001GND<\/td> \u7535\u6e90\uff081.8V~5.5V \uff09<\/td><\/tr> WP<\/td> \u5199\u4fdd\u62a4\uff08\u9ad8\u7535\u5e73\u6709\u6548\uff09<\/td><\/tr> SCL\u3001SDA<\/td> I2C\u63a5\u53e3<\/td><\/tr> A0\u3001A1\u3001A2<\/td> I2C\u5730\u5740<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-20.png\")
<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-21.png\")
X DEC\uff1aX\u8bd1\u7801\u5668<\/figcaption><\/figure>\n\n\n\nI2C\u603b\u7ebf\u4ecb\u7ecd<\/h2>\n\n\n\n
I2C\u603b\u7ebf(Inter IC BUS\uff09\u662f\u7531Philips\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e24\u6839\u901a\u4fe1\u7ebf\ufe30SCL (Serial Clock) \u3001SDA(Serial Data)\u3002
\u540c\u6b65\u3001\u534a\u53cc\u5de5\uff0c\u5e26\u6570\u636e\u5e94\u7b54\u3002
\u901a\u7528\u7684I2C\u603b\u7ebf\uff0c\u53ef\u4ee5\u4f7f\u5404\u79cd\u8bbe\u5907\u7684\u901a\u4fe1\u6807\u51c6\u7edf\u4e00\uff0c\u5bf9\u4e8e\u5382\u5bb6\u6765\u8bf4\uff0c\u4f7f\u7528\u6210\u719f\u7684\u65b9\u6848\u53ef\u4ee5\u7f29\u77ed\u82af\u7247\u8bbe\u8ba1\u5468\u671f
\u63d0\u9ad8\u7a33\u5b9a\u6027\uff0c\u5bf9\u4e8e\u5e94\u7528\u8005\u6765\u8bf4\uff0c\u4f7f\u7528\u901a\u7528\u7684\u901a\u4fe1\u534f\u8bae\u53ef\u4ee5\u907f\u514d\u5b66\u4e60\u5404\u79cd\u5404\u6837\u7684\u81ea\u5b9a\u4e49\u534f\u8bae\uff0c\u964d\u4f4e\u4e86\u5b66\u4e60\u548c\u5e94\u7528\u7684\u96be\u5ea6\u3002\u4f7f\u7528\u6709\u4e13\u5229\u8d39\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-22.png\")
1.0.92\u5bf8OLED\u5c4f\u5e55; 2.DS3631\u65f6\u949f\u82af\u7247; 3.MTU6050\u9640\u87ba\u4eea\u82af\u7247\u3002<\/figcaption><\/figure>\n\n\n\nI2C\u7535\u8def\u89c4\u8303<\/h2>\n\n\n\n
\u6240\u6709I2C\u8bbe\u5907\u7684SCL\u8fde\u5728\u4e00\u8d77\uff0cSDA\u8fde\u5728\u4e00\u8d77\u3002
\u8bbe\u5907\u7684SCL\u548cSDA\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
SCL\u548cSDA\u5404\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7KQ\u5de6\u53f3\u3002
\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u7684\u5171\u540c\u4f5c\u7528\u5b9e\u73b0\u4e86\u201c\u7ebf\u4e0e”\u7684\u529f\u80fd\uff0c\u6b64\u8bbe\u8ba1\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u591a\u673a\u901a\u4fe1\u4e92\u76f8\u5e72\u6270\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image.png\")
<\/figure>\n\n\n\nI2C\u65f6\u5e8f\u7ed3\u6784<\/h2>\n\n\n\n\u8d77\u59cb\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u9ad8\u7535\u5e73\u5207\u6362\u5230\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n
\u7ec8\u6b62\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u4f4e\u7535\u5e73\u5207\u6362\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-1.png\")
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
SCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4e3b\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4ece\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u3002\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-3.png\")
<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff1aSCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4ece\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4e3b\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-2.png\")
\u7d2b\u8272\u4ee3\u8868\u4ece\u673a\u63a7\u5236\u603b\u7ebf\u3002<\/figcaption><\/figure>\n\n\n\n\u53d1\u9001\u5e94\u7b54 (Send Ack)<\/h3>\n\n\n\n
\u5728\u63a5\u6536\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u53d1\u9001\u4e00\u4f4d\u6570\u636e\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\u3002<\/p>\n\n\n\n
\u63a5\u6536\u5e94\u7b54\uff08Receive Ack\uff09<\/h3>\n\n\n\n
\u5728\u53d1\u9001\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u63a5\u6536\u4e00\u4f4d\u6570\u636e\uff0c\u5224\u65ad\u4ece\u673a\u662f\u5426\u5e94\u7b54\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-4.png\")
<\/figure>\n\n\n\nI2C\u6570\u636e\u5e27<\/h2>\n\n\n\n\u53d1\u9001\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-5.png\")
\u524d7\u4f4d\u662f\u5730\u5740\uff0c\u5176\u4e2d\u524d4\u4f4d\u662f\u56fa\u5b9a\u7684\uff0c24C02\u56fa\u5b9a\u662f1010\uff0c\u662f\u82af\u7247\u516c\u53f8\u5ba1\u8bf7\u5230\u7684\u5730\u5740\u3002A3A2A1\u662f\u81ea\u5df1\u901a\u8fc7\u7535\u8def\u914d\u7f6e\u7684\u3002<\/figcaption><\/figure>\n\n\n\n\u63a5\u6536\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-6.png\")
<\/figure>\n\n\n\n\u5148\u53d1\u9001\u518d\u63a5\u6536\u6570\u636e\u5e27\uff08\u590d\u5408\u683c\u5f0f\uff09<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-7.png\")
<\/figure>\n\n\n\nAT24C02\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u5b57\u8282\u5199\uff1a\u5728WORD ADDRESS\u5904\u5199\u5165\u6570\u636eDATA<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-8.png\")
\u968f\u673a\u8bfb\uff1a\u8bfb\u51fa\u5728WORD ADDRESS\u5904\u7684\u6570\u636eDATA<\/figcaption><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/11\/image-9.png\")
<\/figure>\n\n\n\nAT24C02\u7684\u56fa\u5b9a\u5730\u5740\u4e3a1010\uff0c\u53ef\u914d\u7f6e\u5730\u5740\u672c\u5f00\u53d1\u677f\u4e0a\u4e3a000\uff0c\u6240\u4ee5SLAVE ADDRESS+W \u4e3a0xA0, SLAVE ADDRESS+R \u4e3a0xA1;<\/p>\n\n\n\n
\/\/I2C.c 20221204\n#include <REGX52.H>\n\nsbit I2C_SCL=P2^1;\nsbit I2C_SDA=P2^0;\n\n\n\/**\n * @brief I2C\u5f00\u59cb\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Start(void)\n{\n I2C_SDA=1;\n I2C_SCL=1;\n I2C_SDA=0;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u505c\u6b62\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Stop(void)\n{\n I2C_SDA=0;\n I2C_SCL=1;\n I2C_SDA=1;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte\u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid I2C_SendByte(unsigned char Byte)\n{\n unsigned char i;\n for(i=0;i<8;i++)\n {\n I2C_SDA=Byte&(0x80>>i);\n I2C_SCL=1;\n I2C_SCL=0;\n }\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u5230\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n *\/\nunsigned char I2C_ReceiveByte(void)\n{\n unsigned char i, Byte=0x00;\n \n I2C_SDA=1;\n for(i=0;i<8;i++)\n {\n I2C_SCL=1;\n if(I2C_SDA==1){Byte|=(0x80>>i);}\n I2C_SCL=0;\n }\n\n return Byte;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u5e94\u7b54\n * @param AckBit\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n * @retval \u65e0\n *\/\nvoid I2C_SendAck(unsigned char AckBit) \/\/bit \u662fC51\u7279\u6709\u7684\u6570\u636e\u7c7b\u578b\n{\n I2C_SDA=AckBit;\n I2C_SCL=1;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u5e94\u7b54\u4f4d\n * @param \u65e0\n * @retval AckBit\u63a5\u6536\u5230\u7684\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n *\/\nunsigned char I2C_ReceiveAck(void)\n{\n unsigned char AckBit;\n I2C_SDA=1;\n I2C_SCL=1;\n AckBit=I2C_SDA;\n I2C_SCL=0;\n return AckBit;\n}<\/code><\/pre>\n\n\n\n\/\/AT24C02.c 20221204\n#include <REGX52.H>\n#include \"I2C.h\"\n\n#define AT24C02_ADDRESS 0xA0\n\n\/**\n * @brief AT24C02\u5199\u5165\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u5199\u5165\u5b57\u8282\u7684\u5730\u5740\n * @param Data\u8981\u5199\u5165\u7684\u6570\u636e\n * @retval \u65e0\n *\/\nvoid AT24C02_WriteByte(unsigned char WordAddress,Data)\n{\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_SendByte(Data);\n I2C_ReceiveAck();\n I2C_Stop();\n}\n\n\/**\n * @brief AT24C02\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u8bfb\u51fa\u5b57\u8282\u7684\u5730\u5740\n * @retval \u8bfb\u51fa\u7684\u6570\u636e\n *\/\nunsigned char AT24C02_ReadByte(unsigned char WordAddress)\n{\n unsigned char Data;\n \n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS|0x01);\n I2C_ReceiveAck();\n Data=I2C_ReceiveByte();\n I2C_SendAck(1);\n I2C_Stop();\n \n return Data;\n}\n<\/code><\/pre>\n\n\n\n\/\/I2C AT24C02\u5b58\u5165\u5e76\u8bfb\u51fa\u4e00\u4e2a\u6570\u636e\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"Key.h\"\n#include \"AT24C02.h\"\n#include \"Delay.h\"\n\nunsigned char Data;\n\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Hello\");\n AT24C02_WriteByte(1,66); \/\/\u5730\u5740\u8303\u56f40~255\n Delayxms(5); \/\/\u5199\u5468\u671f\u4e3a5ms\uff0c\u5fc5\u987b\u7b49\u5f85\u4e00\u4e0b\n Data = AT24C02_ReadByte(1);\n \n LCD_ShowNum(2,1,Data,3);\n\twhile(1)\n\t{\n\t\t\n\t}\n}\n<\/code><\/pre>\n\n\n\nDS18B20\u6e29\u5ea6\u4f20\u611f\u5668<\/h2>\n\n\n\n
DS18B20\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u5b57\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5176\u63a7\u5236\u547d\u4ee4\u548c\u6570\u636e\u90fd\u662f\u4ee5\u6570\u5b57\u4fe1\u53f7\u7684\u65b9\u5f0f\u8f93\u5165\u8f93\u51fa\uff0c\u76f8\u6bd4\u8f83\u4e8e\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5177\u6709\u529f\u80fd\u5f3a\u5927\u3001\u786c\u4ef6\u7b80\u5355\u3001\u6613\u6269\u5c55\u3001\u6297\u5e72\u6270\u6027\u5f3a\u7b49\u7279\u70b9\u3002\uff08\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\u5982\u70ed\u654f\u7535\u963b\u3002\uff09
\u6d4b\u6e29\u8303\u56f4\uff1a-55\u00b0C \u5230 +125\u00b0C\u3002
\u901a\u4fe1\u63a5\u53e3\uff1a1-Wire\uff08\u5355\u603b\u7ebf\uff09\u3002
\u5176\u5b83\u7279\u5f81\uff1a\u53ef\u5f62\u6210\u603b\u7ebf\u7ed3\u6784\u3001\u5185\u7f6e\u6e29\u5ea6\u62a5\u8b66\u529f\u80fd\u3001\u53ef\u5bc4\u751f\u4f9b\u7535\uff08\u4e0d\u9700\u8981VCC\u4e5f\u53ef\u901a\u8fc7\u603b\u7ebf\u4f9b\u7535\uff09\u3002\u53ef\u4ee5\u5728\u4e00\u4e2a\u901a\u4fe1\u7ebf\u4e0a\u6302\u591a\u4e2a\u8bbe\u5907\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-23.png\")
1.TO92\u5c01\u88c5<\/figcaption><\/figure>\n\n\n\n\u5f15\u811a\u53ca\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-24.png\")
VDD\uff1a\u7535\u6e90\uff083.0V\u20145.5V\uff09\u3002DQ\uff1a\u5355\u603b\u7ebf\u63a5\u53e3\u3002GND\uff1a\u5730\u3002<\/figcaption><\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-25.png\")
<\/figure>\n\n\n\n64-BIT ROM\uff1a\u4f5c\u4e3a\u5668\u4ef6\u5730\u5740\uff0c\u7528\u4e8e\u603b\u7ebf\u901a\u4fe1\u7684\u5bfb\u5740\u3002
SCRATCHPAD\uff08\u6682\u5b58\u5668\uff09\uff1a\u7528\u4e8e\u603b\u7ebf\u7684\u6570\u636e\u4ea4\u4e92\u3002
EEPROM\uff1a\u7528\u4e8e\u4fdd\u5b58\u6e29\u5ea6\u89e6\u53d1\u9608\u503c\u548c\u914d\u7f6e\u53c2\u6570\u3002<\/p>\n\n\n\n
\u5b58\u50a8\u5668\u7ed3\u6784<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-26.png\")
<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u4ecb\u7ecd<\/h3>\n\n\n\n
\u5355\u603b\u7ebf\uff081-Wire BUS\uff09\u662f\u7531Dallas\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e00\u6839\u901a\u4fe1\u7ebf\uff1aDQ\u3002
\u5f02\u6b65\u3001\u534a\u53cc\u5de5\u3002
\u5355\u603b\u7ebf\u53ea\u9700\u8981\u4e00\u6839\u901a\u4fe1\u7ebf\u5373\u53ef\u5b9e\u73b0\u6570\u636e\u7684\u53cc\u5411\u4f20\u8f93\uff0c\u5f53\u91c7\u7528\u5bc4\u751f\u4f9b\u7535\u65f6\uff0c\u8fd8\u53ef\u4ee5\u7701\u53bb\u8bbe\u5907\u7684VDD\u7ebf\u8def\uff0c\u6b64\u65f6\uff0c\u4f9b\u7535\u52a0\u901a\u4fe1\u53ea\u9700\u8981DQ\u548cGND\u4e24\u6839\u7ebf\u3002<\/p>\n\n\n\n
\u5355\u603b\u7ebf\u7535\u8def\u89c4\u8303<\/h3>\n\n\n\n
\u8bbe\u5907\u7684DQ\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
DQ\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7K\u03a9\u5de6\u53f3\u3002
\u82e5\u6b64\u603b\u7ebf\u7684\u4ece\u673a\u91c7\u53d6\u5bc4\u751f\u4f9b\u7535\uff0c\u5219\u4e3b\u673a\u8fd8\u5e94\u914d\u4e00\u4e2a\u5f3a\u4e0a\u62c9\u8f93\u51fa\u7535\u8def\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-27.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-28.png\")
<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u65f6\u5e8f\u7ed3\u6784<\/h3>\n\n\n\n\u521d\u59cb\u5316<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e\u81f3\u5c11480us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u7b49\u5f8515~60us\u540e\uff0c\u5b58\u5728\u7684\u4ece\u673a\u4f1a\u62c9\u4f4e\u603b\u7ebf60~240us\u4ee5\u54cd\u5e94\u4e3b\u673a\uff0c\u4e4b\u540e\u4ece\u673a\u5c06\u91ca\u653e\u603b\u7ebf\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-29.png\")
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e60~120us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90010\uff1b\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90011\u3002\u4ece\u673a\u5c06\u5728\u603b\u7ebf\u62c9\u4f4e30us\u540e\uff08\u5178\u578b\u503c\uff09\u8bfb\u53d6\u7535\u5e73\uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-30.png\")
<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u5e76\u5728\u62c9\u4f4e\u540e15us\u5185\u8bfb\u53d6\u603b\u7ebf\u7535\u5e73\uff08\u5c3d\u91cf\u8d34\u8fd115us\u7684\u672b\u5c3e\uff09\uff0c\u8bfb\u53d6\u4e3a\u4f4e\u7535\u5e73\u5219\u4e3a\u63a5\u65360\uff0c\u8bfb\u53d6\u4e3a\u9ad8\u7535\u5e73\u5219\u4e3a\u63a5\u65361 \uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-31.png\")
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u53d1\u9001\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u63a5\u6536\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
DS18B20\u64cd\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n
\u521d\u59cb\u5316\uff1a\u4ece\u673a\u590d\u4f4d\uff0c\u4e3b\u673a\u5224\u65ad\u4ece\u673a\u662f\u5426\u54cd\u5e94\u3002
ROM\u64cd\u4f5c\uff1aROM\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002
\u529f\u80fd\u64cd\u4f5c\uff1a\u529f\u80fd\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-32.png\")
<\/figure>\n\n\n\nDS18B20\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u6e29\u5ea6\u53d8\u6362\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-33.png\")
<\/figure>\n\n\n\n\u6e29\u5ea6\u8bfb\u53d6\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u8bfb\u6682\u5b58\u5668\u2192\u8fde\u7eed\u7684\u8bfb\u64cd\u4f5c<\/p>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-34.png\")
<\/figure>\n\n\n\n\u6e29\u5ea6\u5b58\u50a8\u683c\u5f0f<\/h3>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-35.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/12\/image-36.png\")
<\/figure>\n\n\n\n\/\/20221206\u5355\u603b\u7ebf\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\n\/\/\u5f15\u811a\u5b9a\u4e49\nsbit OneWire_DQ=P3^7;\n\n\/**\n * @brief \u5355\u603b\u7ebf\u521d\u59cb\u5316\n * @param \u65e0\n * @retval \u4ece\u673a\u54cd\u5e94\u4f4d\uff0c0\u4e3a\u54cd\u5e94\uff0c1\u4e3a\u672a\u54cd\u5e94\n *\/\nunsigned char OneWire_Init(void)\n{\n\tunsigned char i;\n\tunsigned char AckBit;\n\tOneWire_DQ=1;\n\tOneWire_DQ=0;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\tOneWire_DQ=1;\n\ti = 32;while (--i);\t\t\t\/\/Delay 70us\n\tAckBit=OneWire_DQ;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\treturn AckBit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4f4d\n * @param Bit \u8981\u53d1\u9001\u7684\u4f4d\n * @retval \u65e0\n *\/\nvoid OneWire_SendBit(unsigned char Bit)\n{\n\tunsigned char i;\n\tOneWire_DQ=0;\n\ti = 4;while (--i);\t\t\t\/\/Delay 10us\n\tOneWire_DQ=Bit;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\tOneWire_DQ=1;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4f4d\n * @param \u65e0\n * @retval \u8bfb\u53d6\u7684\u4f4d\n *\/\nunsigned char OneWire_ReceiveBit(void)\n{\n\tunsigned char i;\n\tunsigned char Bit;\n\tOneWire_DQ=0;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tOneWire_DQ=1;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tBit=OneWire_DQ;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\treturn Bit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte \u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid OneWire_SendByte(unsigned char Byte)\n{\n\tunsigned char i;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tOneWire_SendBit(Byte&(0x01<<i));\n\t}\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u7684\u4e00\u4e2a\u5b57\u8282\n *\/\nunsigned char OneWire_ReceiveByte(void)\n{\n\tunsigned char i;\n\tunsigned char Byte=0x00;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tif(OneWire_ReceiveBit()){Byte|=(0x01<<i);}\n\t}\n\treturn Byte;\n}\n<\/code><\/pre>\n\n\n\n\/\/20221206 DS18B20\u6e29\u5ea6\u4f20\u611f\u5668\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n#include \"OneWire.h\"\n\n\/\/DS18B20\u6307\u4ee4\n#define DS18B20_SKIP_ROM\t\t\t0xCC\n#define DS18B20_CONVERT_T\t\t\t0x44\n#define DS18B20_READ_SCRATCHPAD \t0xBE\n\n\/**\n * @brief DS18B20\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid DS18B20_ConvertT(void)\n{\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_CONVERT_T);\n}\n\n\/**\n * @brief DS18B20\u8bfb\u53d6\u6e29\u5ea6\n * @param \u65e0\n * @retval \u6e29\u5ea6\u6570\u503c\n *\/\nfloat DS18B20_ReadT(void)\n{\n\tunsigned char TLSB,TMSB;\n\tint Temp;\n\tfloat T;\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_READ_SCRATCHPAD);\n\tTLSB=OneWire_ReceiveByte();\n\tTMSB=OneWire_ReceiveByte();\n\tTemp=(TMSB<<8)|TLSB;\n\tT=Temp\/16.0;\n\treturn T;\n}\n<\/code><\/pre>\n\n\n\nLCD1602<\/h2>\n\n\n\n
LCD1602\uff08Liquid Crystal Display\uff09\u6db2\u6676\u663e\u793a\u5c4f\u662f\u4e00\u79cd\u5b57\u7b26\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u53ef\u4ee5\u663e\u793aASCII\u7801\u7684\u6807\u51c6\u5b57\u7b26\u548c\u5176\u5b83\u7684\u4e00\u4e9b\u5185\u7f6e\u7279\u6b8a\u5b57\u7b26\uff0c\u8fd8\u53ef\u4ee5\u67098\u4e2a\u81ea\u5b9a\u4e49\u5b57\u7b26\u3002
<\/figure>\n\n\n\nKeil5 C51\u548cKeil5 MDK\u7684\u533a\u522b<\/p>\n\n\n\n
\u4e24\u8005\u90fd\u662fKeil\u7cfb\u5217\u8f6f\u4ef6\uff0c\u4f46\u524d\u8005\u662f\u7528\u6765\u5f00\u53d151\u5355\u7247\u673a\u7684\uff0c\u540e\u8005\u662f\u7528\u6765\u5f00\u53d1ARM\u7cfb\u5217\uff0c\u6bd4\u5982STM32\u7684\u3002<\/p>\n\n\n\n
STC-ISP\u4e0b\u8f7d\u7a0b\u5e8f<\/h3>\n\n\n\n\u5f00\u53d1\u677f\u8d44\u6599\u3001\u539f\u7406\u56fe<\/h3>\n\n\n\n\u5355\u7247\u673a\u4ecb\u7ecd<\/h2>\n\n\n\n\n\u5355\u7247\u673a\uff0c\u82f1\u6587Micro Controller Unit\uff0c\u7b80\u79f0MCU<\/p>\n\n\n\n
\u5185\u90e8\u96c6\u6210\u4e86CPU\u3001RAM\u3001ROM\u3001\u5b9a\u65f6\u5668\u3001\u4e2d\u65ad\u7cfb\u7edf\u3001\u901a\u8baf\u63a5\u53e3\u7b49\u4e00\u7cfb\u5217\u7535\u8111\u7684\u5e38\u7528\u786c\u4ef6\u529f\u80fd\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u4efb\u52a1\u662f\u4fe1\u606f\u91c7\u96c6\uff08\u4f9d\u9760\u4f20\u611f\u5668\uff09\u3001\u5904\u7406\uff08\u4f9d\u9760CPU\uff09\u548c\u786c\u4ef6\u8bbe\u5907\uff08\u4f8b\u5982\u7535\u673a\u3001LED\u7b49\uff09\u7684\u63a7\u5236\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u8ddf\u8ba1\u7b97\u673a\u76f8\u6bd4\uff0c\u5355\u7247\u673a\u7b97\u662f\u4e00\u4e2a\u8896\u73cd\u7248\u8ba1\u7b97\u673a\uff0c\u4e00\u4e2a\u82af\u7247\u5c31\u80fd\u6784\u6210\u5b8c\u6574\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u3002\u4f46\u5728\u6027\u80fd\u4e0a\uff0c\u4e0e\u8ba1\u7b97\u673a\u76f8\u5dee\u751a\u8fdc\uff0c\u4f46\u5355\u7247\u673a\u6210\u672c\u4f4e\u3001\u4f53\u79ef\u5c0f\u3001\u7ed3\u6784\u7b80\u5355\uff0c\u5728\u751f\u6d3b\u548c\u5de5\u4e1a\u63a7\u5236\u9886\u57df\u5927\u6709\u6240\u7528\u3002<\/p>\n\n\n\n
\u540c\u65f6\uff0c\u5b66\u4e60\u4f7f\u7528\u5355\u7247\u673a\u662f\u4e86\u89e3\u8ba1\u7b97\u673a\u539f\u7406\u4e0e\u7ed3\u6784\u7684\u6700\u4f73\u9009\u62e9<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u5e94\u7528\u9886\u57df\uff1a<\/h2>\n\n\n\n
\u5355\u7247\u673a\u7684\u4f7f\u7528\u9886\u57df\u5df2\u5341\u5206\u5e7f\u6cdb\uff0c\u5982\u667a\u80fd\u4eea\u8868\u3001\u5b9e\u65f6\u5de5\u63a7\u3001\u901a\u8baf\u8bbe\u5907\u3001\u5bfc\u822a\u7cfb\u7edf\u3001\u5bb6\u7528\u7535\u5668\u7b49\u3002\u5404\u79cd\u4ea7\u54c1\u4e00\u65e6\u7528\u4e0a\u4e86\u5355\u7247\u673a\uff0c\u5c31\u80fd\u8d77\u5230\u4f7f\u4ea7\u54c1\u5347\u7ea7\u6362\u4ee3\u7684\u529f\u6548\uff0c\u5e38\u5728\u4ea7\u54c1\u540d\u79f0\u524d\u51a0\u4ee5\u5f62\u5bb9\u8bcd\u2014\u2014\u201c\u667a\u80fd\u578b\u201d\uff0c\u5982\u667a\u80fd\u578b\u6d17\u8863\u673a\u7b49\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n51\u5355\u7247\u673a<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u662f\u5bf9\u517c\u5bb9\u82f1\u7279\u5c14<\/a>8051\u6307\u4ee4\u7cfb\u7edf<\/a>\u7684\u5355\u7247\u673a<\/a>\u7684\u7edf\u79f0\u3002<\/p>\n\n\n\n\u4e3b\u8981\u54c1\u724c\u53ca\u5176\u4ea7\u54c1<\/p>\n\n\n\n
\n- Intel\uff08\u82f1\u7279\u5c14<\/a>\uff09\uff1a80C31\u300180C51<\/a>\u300187C51\uff0c80C32\u300180C52\u300187C52\u7b49\uff1b<\/li>\n\n\n\n
- Atmel<\/a>\uff08\u827e\u7279\u6885\u5c14\uff09\uff1a89C51\u300189C52\u300189C2051\uff0c89S51(RC)\uff0c89S52(RC)\u7b49\uff1b<\/li>\n\n\n\n
- Philips\uff08\u98de\u5229\u6d66<\/a>\uff09\u3001\u534e\u90a6\u3001Dallas\uff08\u8fbe\u62c9\u65af\uff09\u3001Siemens\uff08\u897f\u95e8\u5b50<\/a>\uff09\u7b49\u516c\u53f8\u7684\u8bb8\u591a\u4ea7\u54c1\uff1b<\/li>\n\n\n\n
- STC\uff08\u5b8f\u6676\uff09\uff1aSTC89C51\u3001STC90C51\u3001STC11\u7cfb\u5217\u3001STC15\u7cfb\u5217\u3001STC8\u7cfb\u5217\u7b49\u3002 <\/sup><\/li>\n<\/ul>\n\n\n\n
STC89C52\u5355\u7247\u673a<\/h2>\n\n\n\n
\u6240\u5c5e\u7cfb\u5217\uff1a51\u5355\u7247\u673a\u7cfb\u5217
\u516c\u53f8\uff1aSTC\u516c\u53f8\uff0c \u4e2d\u56fd\u516c\u53f8\u3002
\u4f4d\u6570\uff1a8\u4f4d
RAM\uff1a512\u5b57\u8282
ROM\uff1a8K\uff08Flash\uff09
\u5de5\u4f5c\u9891\u7387\uff1a12MHZ<\/p>\n\n\n\n
\u547d\u540d\u89c4\u5219<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u62c6\u89e3<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u7ed3\u6784\u56fe<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u770b\u95e8\u72d7\uff1a\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u7684\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u7ba1\u811a\u56fe<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u4e0a\u65b9\u6709\u4e2a\u7f3a\u53e3\uff0c\u538b\u6746\u671d\u4e0a\u3002<\/p>\n\n\n\n
\u00b7<\/p>\n<\/div>\n\n\n\n
\u6700\u5c0f\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u65b0\u5efa\u5de5\u7a0b\uff1a<\/h2>\n\n\n\n
Keil5\u9009\u62e9CPU\u65f6\uff0c\u9009Atmel,STC\u548cAT\u57fa\u672c\u64cd\u4f5c\u662f\u4e00\u6837\u7684\u3002\u9009\u62e9AT89C51\u6216AT89C52\u90fd\u884c\u3002\u5185\u6838\u90fd\u662f\u4e00\u6837\u7684\u3002\u4e0d\u9700\u8981\u590d\u5236\u542f\u52a8\u6587\u4ef6\uff0c\u56e0\u4e3aKeil\u5df2\u7ecf\u96c6\u6210\u4e86\u3002<\/p>\n\n\n\n
LED\u53d1\u5149\u4e8c\u6781\u7ba1 light emitting diode<\/h2>\n\n\n\n
\u7528\u6765\u7167\u660e\u3001\u5e7f\u544a\u706f\u3001\u6307\u5f15\u706f\u3001\u5c4f\u5e55\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6392\u963b\uff0c\u7b80\u79f0RP\uff0c\uff08Resistance Pack\uff09102\u4ee3\u88681000\u6b27\uff1a10*10\u76842\u6b21\u65b9; 473\u4e3a47*1000=47K\u6b27\u3002\u6709\u65f6\u67094\u4f4d\u6570\u8868\u793a\u59821001\uff0c\u524d\u4e09\u4f4d\u4e3a\u6709\u6548\u6570\u5b57\uff0c\u7b2c4\u4f4d\u4e3a\u500d\u7387\u5373100*10=1000\u6b27\u3002\u7535\u4f4d\u5668\u6807103\u5373\u4ee3\u886810*1000=10K\u6b27\u3002\u9650\u6d41\u7535\u963b\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u70b9\u4eaeLED\uff0c\u8f6c\u53d8\u4e3a\u63a7\u5236\u76f8\u5e94\u5f15\u811a\u9ad8\u4f4e\u7535\u5e73\u3002 <\/p>\n\n\n\n
Keil\u9ed8\u8ba4\u4e0d\u751f\u6210.hex\u6587\u4ef6\uff0c\u9700\u8981\u914d\u7f6e\u3002<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u4e00\u4e2aLED\u706f\uff0c\u5171\u5730\u63a5\u6cd5\n#include <REGX51.H>\n\nvoid main()\n{\n P2=0x01;\n while(1)\n {\n \n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\/\/LED\u95ea\u70c1\u4ee3\u7801\n#include <REGX51.H>\n#include <INTRINS.H> \/\/\u5305\u542b_nop_()\u51fd\u6570\u539f\u578b\n\nvoid Delayxms(unsigned int xms)\t\t\/\/@12.000MHz\n{\n unsigned char i, j;\n while(xms--)\n {\n i = 2;\n j = 239;\n do\n {\n while (--j);\n } while (--i);\n }\n}\n\nvoid main(void)\n{\n P2=0xFF;\n while(1)\n {\n P2=0xFF;\n Delayxms(500);\n P2=0x00;\n Delayxms(500);\n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\u72ec\u7acb\u6309\u952e<\/h2>\n\n\n\n
\u2022\u8f7b\u89e6\u6309\u952e\uff1a\u76f8\u5f53\u4e8e\u662f\u4e00\u79cd\u7535\u5b50\u5f00\u5173\uff0c\u6309\u4e0b\u65f6\u5f00\u5173\u63a5\u901a\uff0c\u677e\u5f00\u65f6\u5f00\u5173\u65ad\u5f00\uff0c\u5b9e\u73b0\u539f\u7406\u662f\u901a\u8fc7\u8f7b\u89e6\u6309\u952e\u5185\u90e8\u7684\u91d1\u5c5e\u5f39\u7247\u53d7\u529b\u5f39\u52a8\u6765\u5b9e\u73b0\u63a5\u901a\u548c\u65ad\u5f00\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nsfr\u5168\u79f0\u4e3a\uff1aspecial function register\uff08\u7ffb\u8bd1\u4e3a\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\uff09\u3002
sbit\uff1a\u4f4d\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u5934\u6587\u4ef6REGX.H \u6709\u4f4d\u58f0\u660e\uff0cREG.H\u6ca1\u6709\u4f4d\u58f0\u660e\u3002<\/p>\n\n\n\n
\/\/\u6309\u4e0b\u6309\u952eLED\u4eae\uff0c\u677e\u624bLED\u706d\n#include <REGX52.H>\n\nvoid main()\n{\n P2=0x00;\n while(1)\n {\n if(P0_0==0)\n {\n P2_0=1;\n }\n else\n {\n P2_0=0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\u6309\u952e\u7684\u6296\u52a8<\/h3>\n\n\n\n
\u5bf9\u4e8e\u673a\u68b0\u5f00\u5173\uff0c\u5f53\u673a\u68b0\u89e6\u70b9\u65ad\u5f00\u3001\u95ed\u5408\u65f6\uff0c\u7531\u4e8e\u673a\u68b0\u89e6\u70b9\u7684\u5f39\u6027\u4f5c\u7528\uff0c\u4e00\u4e2a\u5f00\u5173\u5728\u95ed\u5408\u65f6\u4e0d\u4f1a\u9a6c\u4e0a\u7a33\u5b9a\u5730\u63a5\u901a\uff0c\u5728\u65ad\u5f00\u65f6\u4e5f\u4e0d\u4f1a\u4e00\u4e0b\u5b50\u65ad\u5f00\uff0c\u6240\u4ee5\u5728\u5f00\u5173\u95ed\u5408\u53ca\u65ad\u5f00\u7684\u77ac\u95f4\u4f1a\u4f34\u968f\u4e00\u8fde\u4e32\u7684\u6296\u52a8\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6d88\u6296\uff1a\u786c\u4ef6\u6d88\u6296; \u8f6f\u4ef6\u6d88\u6296\u3002<\/p>\n\n\n\n
\u68c0\u6d4b\u677e\u624b\uff1a<\/p>\n\n\n\n
\/\/\u6309\u952e\u63a7\u5236LED\u706f\u4eae\u706d\u72b6\u6001\u5207\u6362\nvoid main()\n{\n P2=0x00;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(20);\/\/\u6d88\u6296\n while(P0_0==0); \/\/\u677e\u624b\u68c0\u6d4b\n Delayxms(20);\n P2_0=~P2_0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\/\/\u7b2c\u4e00\u4e2a\u6309\u952e\u63a7\u5236\u5411\u5de6\u6d41\u6c34\u706f\uff0c\u7b2c\u4e8c\u4e2a\u6309\u952e\u63a7\u5236\u5411\u53f3\u6d41\u6c34\u706f\nvoid main()\n{\n unsigned char LEDNum=0;\n P2=0x01;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n LEDNum++;\n if(LEDNum>=8)\n LEDNum=0;\n P2=0x01<<LEDNum;\n }\n if(P0_1==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n if(LEDNum==0)\n LEDNum=8;\n LEDNum--;\n if(LEDNum<0)\n LEDNum=8;\n P2=0x01<<LEDNum;\n }\n }\n}<\/code><\/pre>\n\n\n\n\/\/\u72ec\u7acb\u6309\u952e\u83b7\u53d6\u952e\u503c\n#include <REGX51.H>\n#include \"Delay.h\"\n\n\/**\n * @brief \u83b7\u53d6\u72ec\u7acb\u6309\u952e\u952e\u7801\n * @param \u65e0 \n * @retval \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\uff0c\u8303\u56f40-8\uff0c\u65e0\u6309\u952e\u6309\u4e0b\uff0c\u8fd4\u56de0;\n *\/\nunsigned char Key()\n{\n unsigned char KeyNumber=0;\n \n if(P0_0==0){Delayxms(50);while(P0_0==0);Delayxms(50);KeyNumber=1;}\n if(P0_1==0){Delayxms(50);while(P0_1==0);Delayxms(50);KeyNumber=2;}\n if(P0_2==0){Delayxms(50);while(P0_2==0);Delayxms(50);KeyNumber=3;}\n if(P0_3==0){Delayxms(50);while(P0_3==0);Delayxms(50);KeyNumber=4;}\n if(P0_4==0){Delayxms(50);while(P0_4==0);Delayxms(50);KeyNumber=5;}\n if(P0_5==0){Delayxms(50);while(P0_5==0);Delayxms(50);KeyNumber=6;}\n if(P0_6==0){Delayxms(50);while(P0_6==0);Delayxms(50);KeyNumber=7;}\n if(P0_7==0){Delayxms(50);while(P0_7==0);Delayxms(50);KeyNumber=8;}\n \n return KeyNumber;\n}\n<\/code><\/pre>\n\n\n\n\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u7279\u6b8a\u7684\u5b58\u50a8\u5668\uff0c\u4ee58\u4e2a\u4e3a\u4e00\u7ec4\uff0c\u6bcf\u4e2a\u4f4d\u540e\u9762\u90fd\u8fde\u7740\u4e00\u6839\u7ebf\u901a\u8fc7\u9a71\u52a8\u5668\u63a7\u5236\u76f8\u5e94\u7535\u8def\u3002\u9a71\u52a8\u5668\u4e3a\u4e86\u589e\u5927\u9a71\u52a8\u80fd\u529b\u3002CPU\u76f4\u63a5\u8bfb\u5199\u5bc4\u5b58\u5668\uff0c\u5bc4\u5b58\u5668\u901a\u8fc7\u9a71\u52a8\u5668\u9a71\u52a8IO\u53e3\u3002<\/p>\n\n\n\n
\u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73\u7684\u95ee\u9898\u8f6c\u5316\u4e3a\u8bfb\u5199\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u6570\u7801\u7ba1<\/h2>\n\n\n\n
\u2022LED\u6570\u7801\u7ba1\uff1a\u6570\u7801\u7ba1\u662f\u4e00\u79cd\u7b80\u5355\u3001\u5ec9\u4ef7\u7684\u663e\u793a\u5668\uff0c\u662f\u7531\u591a\u4e2a\u53d1\u5149\u4e8c\u6781\u7ba1\u5c01\u88c5\u5728\u4e00\u8d77\u7ec4\u6210\u201c8\u201d\u5b57\u578b\u7684\u5668\u4ef6<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6570\u7801\u7ba1\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5171\u9634\u3001\u5171\u9633\u63a5\u6cd5\u3002
\u4f4d\u9009\u3001\u6bb5\u9009\u3001\u6bb5\u7801\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n74LS138\u300174HC138\uff1a\u4e09\u516b\u8bd1\u7801\u5668<\/h3>\n\n\n\n
\u5176\u4e2dLS\u6216HC\u4ee3\u8868\u7535\u538b\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n74HC245\uff1a\u53cc\u5411\u6570\u636e\u7f13\u51b2\u5668\uff08\u53c8\u79f0\u4e3a\u9501\u5b58\u5668\uff09<\/p>\n\n\n\n
OE: output enable\u3002 \u82af\u7247\u4f7f\u80fd
DIR: direction \u65b9\u5411<\/p>\n\n\n\n
\u7535\u5bb9\uff1a\u6807\u7740104\uff0c\u5bb9\u91cf\u4e3a10 0000pF\uff0c nF uF mF F<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u52a8\u6001\u6570\u7801\u7ba1\u67d0\u4e00\u4f4d\n#include <REGX51.H>\n\/\/P2\u901a\u8fc7138\u8bd1\u7801\u5668\u4f4d\u9009\n\/\/P0\u901a\u8fc774HC573D\u6bb5\u9009\nvoid main(void)\n{\n P2=0x02; \/\/\u9009\u7b2c\u4e09\u4f4d\n \/\/\u663e\u793a\u6570\u5b576\uff0c\u9700\u8981a\u5bf9\u5e94P0_7 c\u5bf9\u5e94P0_5 d_4 e_3 f_2 g_1\u4eae\uff0c b_6 dp_0\u706d 0111 1101 7D\n P0=0x7D;\n while(1)\n { \n }\n}<\/code><\/pre>\n\n\n\n\/\/\u6307\u5b9a\u52a8\u6001\u6570\u7801\u7ba1\u7b2c\u51e0\u4f4d\u663e\u793a\u4ec0\u4e48\u6570\u5b57\uff0c\n\/\/Location \u4ece1\u52308\uff0c8\u4e2a\u6570\u7801\u7ba1\u4ece\u5de6\u5f80\u53f31\u30012\u2026\u20268\u6392\u5e8f\nvoid Nixie(unsigned char Location,unsigned char Number)\n{\n switch(Location)\n {\n case 8: P2_2=1; P2_1=1; P2_0=1;break;\n case 7: P2_2=1; P2_1=1; P2_0=0;break;\n case 6: P2_2=1; P2_1=0; P2_0=1;break;\n case 5: P2_2=1; P2_1=0; P2_0=0;break;\n case 4: P2_2=0; P2_1=1; P2_0=1;break;\n case 3: P2_2=0; P2_1=1; P2_0=0;break;\n case 2: P2_2=0; P2_1=0; P2_0=1;break;\n case 1: P2_2=0; P2_1=0; P2_0=0;break;\n default:\n break;\n };\n P0=NixieTable[Number];\n}\n<\/code><\/pre>\n\n\n\n\u6570\u7801\u7ba1\u6d88\u5f71\uff1a\u4f4d\u9009\u3001\u6bb5\u9009\uff0c\u4e0b\u4e00\u4e2a\u4f4d\u9009\uff0c\u4e0b\u4e00\u4e0b\u6bb5\u9009<\/p>\n\n\n\n
\u6570\u7801\u7ba1\u9a71\u52a8\u65b9\u5f0f<\/h3>\n\n\n\n
\u2022\u5355\u7247\u673a\u76f4\u63a5\u626b\u63cf\uff1a\u786c\u4ef6\u8bbe\u5907\u7b80\u5355\uff0c\u4f46\u4f1a\u8017\u8d39\u5927\u91cf\u7684\u5355\u7247\u673aCPU\u65f6\u95f4<\/p>\n\n\n\n
\u2022\u4e13\u7528\u9a71\u52a8\u82af\u7247\uff1a\u5185\u90e8\u81ea\u5e26\u663e\u5b58\u3001\u626b\u63cf\u7535\u8def\uff0c\u5355\u7247\u673a\u53ea\u9700\u544a\u8bc9\u5b83\u663e\u793a\u4ec0\u4e48\u5373\u53ef<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nLCD1602\u8c03\u8bd5\u5de5\u5177<\/h2>\n\n\n\n
\u4f7f\u7528LCD1602\u6db2\u6676\u5c4f\u4f5c\u4e3a\u8c03\u8bd5\u7a97\u53e3\uff0c\u63d0\u4f9b\u7c7b\u4f3cprintf\u51fd\u6570\u7684\u529f\u80fd\uff0c\u53ef\u5b9e\u65f6\u89c2\u5bdf\u5355\u7247\u673a\u5185\u90e8\u6570\u636e\u7684\u53d8\u6362\u60c5\u51b5\uff0c\u4fbf\u4e8e\u8c03\u8bd5\u548c\u6f14\u793a\u3002<\/p>\n\n\n\n
\u672c\u89c6\u9891\u63d0\u4f9b\u7684LCD1602\u4ee3\u7801\u5c5e\u4e8e\u6a21\u5757\u5316\u7684\u4ee3\u7801\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u8981\u77e5\u9053\u6240\u63d0\u4f9b\u51fd\u6570\u7684\u4f5c\u7528\u548c\u4f7f\u7528\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u4f7f\u7528LCD1602<\/p>\n\n\n\n\u51fd\u6570<\/strong><\/td>\u4f5c\u7528<\/strong><\/td><\/tr>LCD_Init();<\/td> \u521d\u59cb\u5316<\/td><\/tr> LCD_ShowChar(1,1,’A’);<\/td> \u663e\u793a\u4e00\u4e2a\u5b57\u7b26<\/td><\/tr> LCD_ShowString(1,3,”Hello”);<\/td> \u663e\u793a\u5b57\u7b26\u4e32<\/td><\/tr> LCD_ShowNum(1,9,123,3);<\/td> \u663e\u793a\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowSignedNum(1,13,-66,2);<\/td> \u663e\u793a\u6709\u7b26\u53f7\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowHexNum(2,1,0xA8,2);<\/td> \u663e\u793a\u5341\u516d\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowBinNum(2,4,0xAA,8);<\/td> \u663e\u793a\u4e8c\u8fdb\u5236\u6570\u5b57<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u77e9\u9635\u952e\u76d8<\/h2>\n\n\n\n
\u2022\u5728\u952e\u76d8\u4e2d\u6309\u952e\u6570\u91cf\u8f83\u591a\u65f6\uff0c\u4e3a\u4e86\u51cf\u5c11I\/O\u53e3\u7684\u5360\u7528\uff0c\u901a\u5e38\u5c06\u6309\u952e\u6392\u5217\u6210\u77e9\u9635\u5f62\u5f0f<\/p>\n\n\n\n
\u2022\u91c7\u7528\u9010\u884c\u6216\u9010\u5217\u7684\u201c\u626b\u63cf\u201d\uff0c\u5c31\u53ef\u4ee5\u8bfb\u51fa\u4efb\u4f55\u4f4d\u7f6e\u6309\u952e\u7684\u72b6\u6001<\/p>\n\n\n\n<\/figure>\n\n\n\n\u626b\u63cf<\/h3>\n\n\n\n
\u6570\u7801\u7ba1\u626b\u63cf\uff08\u8f93\u51fa\u626b\u63cf\uff09 \u539f\u7406\uff1a\u663e\u793a\u7b2c1\u4f4d\u2192\u663e\u793a\u7b2c2\u4f4d\u2192\u663e\u793a\u7b2c3\u4f4d\u2192\u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6570\u7801\u7ba1\u540c\u65f6\u663e\u793a\u7684\u6548\u679c<\/p>\n\n\n\n
\u77e9\u9635\u952e\u76d8\u626b\u63cf\uff08\u8f93\u5165\u626b\u63cf\uff09\u539f\u7406\uff1a\u8bfb\u53d6\u7b2c1\u884c(\u5217)\u2192\u8bfb\u53d6\u7b2c2\u884c(\u5217) \u2192\u8bfb\u53d6\u7b2c3\u884c(\u5217) \u2192 \u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6309\u952e\u540c\u65f6\u68c0\u6d4b\u7684\u6548\u679c<\/p>\n\n\n\n
\u4ee5\u4e0a\u4e24\u79cd\u626b\u63cf\u65b9\u5f0f\u7684\u5171\u6027\uff1a\u8282\u7701I\/O\u53e3\u3002<\/p>\n\n\n\n
IO\u53e3\u5f31\u4e0a\u62c9\u6a21\u5f0f<\/h3>\n\n\n\n
\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
P1\u3001P2\u3001P3\u90fd\u662f\u5f31\u4e0a\u62c9\uff0cP0\u5f00\u6f0f\u8f93\u51fa\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nKeil5\u6a21\u677f\u529f\u80fd<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u7a0b\u5e8f\u6ce8\u91ca\u8303\u4f8b<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u6700\u597d\u521b\u5efa\u4e00\u4e2a\u6ce8\u91ca\u6a21\u677f\u3002<\/p>\n\n\n\n
\u6ce8\u91ca\u7f16\u8bd1\u5668\uff0c\u6839\u636e\u7279\u5b9a\u683c\u5f0f\uff0c\u4ece\u4ee3\u7801\u4e2d\u63d0\u53d6\u6ce8\u91ca\u5f62\u6210\u7279\u5b9a\u8bf4\u660e\u6587\u6863\u3002<\/p>\n\n\n\n
\/\/20221129\u77e9\u9635\u952e\u76d8\u83b7\u53d6\u952e\u7801\n#include <REGX51.H>\n#include \"Delay.h\"\n\/**\n * @brief \u77e9\u9635\u952e\u76d8\uff0c\u8bfb\u53d6\u6309\u952e\u952e\u7801\n * @param \u65e0\n * @retval KeyNumber \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\u503c\n * \u5982\u679c\u6309\u952e\u6309\u4e0b\u4e0d\u653e\uff0c\u7a0b\u5e8f\u4f1a\u505c\u7559\u5728\u6b64\u51fd\u6570\uff0c\u677e\u624b\u7684\u4e00\u77ac\u95f4\uff0c\u8fd4\u56de\u952e\u7801\uff0c\u6ca1\u6709\u6309\u952e\uff0c\u8fd4\u56de0;\n *\/\nunsigned char MatrixKey()\n{\n unsigned char KeyNumber=0;\n \n \/\/\u6309\u5217\u626b\u63cf\n P1=0xFF;\n P1_3=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=1;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=5;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=9;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=13;}\n \n P1=0xFF;\n P1_2=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=2;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=6;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=10;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=14;}\n \n P1=0xFF;\n P1_1=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=3;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=7;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=11;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=15;}\n \n P1=0xFF;\n P1_0=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=4;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=8;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=12;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=16;}\n \n Delayxms(100);\n \n return KeyNumber;\n}<\/code><\/pre>\n\n\n\n\/\/20221129\u77e9\u9635\u952e\u76d8\u5bc6\u7801\u9501\n#include <REGX51.H>\n#include \"Delay.h\"\n#include \"LCD1602.h\"\n#include \"MatrixKey.h\"\n\nunsigned char KeyNum;\nunsigned int Password,Count;\n\n\/\/s10\u4ee3\u88680 s11\u786e\u8ba4\u952e s12\u53d6\u6d88\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Password:\");\n while(1)\n {\n KeyNum=MatrixKey();\n if(KeyNum)\n {\n if(KeyNum<=10 && Count<4) \/\/\u5982\u679c\u952e\u7801S1~S10\u6309\u4e0b\uff0c\u8f93\u5165\u5bc6\u7801\n {\n Password*=10; \/\/\u5bc6\u7801\u5de6\u79fb1\u4f4d\n Password+=KeyNum%10;\/\/\u83b7\u53d61\u4f4d\u5bc6\u7801\n Count++;\/\/\u8ba1\u6b21\u52a01\n }\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n \n if(KeyNum==11 && Count==4)\/\/\u5982\u679cS11\u6309\u952e\u6309\u4e0b\uff0c\u5224\u65ad\u662f\u5426\u662f4\u4f4d\uff0c\u5982\u679c\u662f\uff0c\u5219\u9a8c\u8bc1\u5bc6\u7801\n {\n if(Password==2345)\n {\n LCD_ShowString(1,14,\"OK \");\n }\n else\n {\n LCD_ShowString(1,14,\"ERR\");\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n }\n \n if(KeyNum==12)\/\/\u5982\u679cS12\u53d6\u6d88\n {\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n } \n }\n}\n<\/code><\/pre>\n\n\n\n\u5b9a\u65f6\u5668<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u7684\u5b9a\u65f6\u5668\u5c5e\u4e8e\u5355\u7247\u673a\u7684\u5185\u90e8\u8d44\u6e90\uff0c\u5176\u7535\u8def\u7684\u8fde\u63a5\u548c\u8fd0\u8f6c\u5747\u5728\u5355\u7247\u673a\u5185\u90e8\u5b8c\u6210<\/p>\n\n\n\n
\u5b9a\u65f6\u5668\u4f5c\u7528\uff1a<\/p>\n\n\n\n
\uff081\uff09\u7528\u4e8e\u8ba1\u65f6\u7cfb\u7edf\uff0c\u53ef\u5b9e\u73b0\u8f6f\u4ef6\u8ba1\u65f6\uff0c\u6216\u8005\u4f7f\u7a0b\u5e8f\u6bcf\u9694\u4e00\u56fa\u5b9a\u65f6\u95f4\u5b8c\u6210\u4e00\u9879\u64cd\u4f5c
\uff082\uff09\u66ff\u4ee3\u957f\u65f6\u95f4\u7684Delay\uff0c\u63d0\u9ad8CPU\u7684\u8fd0\u884c\u6548\u7387\u548c\u5904\u7406\u901f\u5ea6\u2026\u2026
\uff083\uff09\u591a\u4efb\u52a1\u5207\u6362\u5b9a\u65f6\u2026\u2026<\/p>\n\n\n\n
STC89C52\u5b9a\u65f6\u5668\u8d44\u6e90<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u4e2a\u6570\uff1a3\u4e2a\uff08T0\u3001T1\u3001T2\uff09\uff0cT0\u548cT1\u4e0e\u4f20\u7edf\u768451\u5355\u7247\u673a\u517c\u5bb9\uff0cT2\u662f\u6b64\u578b\u53f7\u5355\u7247\u673a\u589e\u52a0\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a\u5b9a\u65f6\u5668\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u5b9a\u65f6\u5668\u4e2a\u6570\u548c\u64cd\u4f5c\u65b9\u5f0f\uff0c\u4f46\u4e00\u822c\u6765\u8bf4\uff0cT0\u548cT1\u7684\u64cd\u4f5c\u65b9\u5f0f\u662f\u6240\u670951\u5355\u7247\u673a\u6240\u5171\u6709\u7684\u3002<\/p>\n\n\n\n
\u5b9a\u65f6\u671f\u6846\u56fe<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u5728\u5355\u7247\u673a\u5185\u90e8\u5c31\u50cf\u4e00\u4e2a\u5c0f\u95f9\u949f\u4e00\u6837\uff0c\u6839\u636e\u65f6\u949f\u7684\u8f93\u51fa\u4fe1\u53f7\uff0c\u6bcf\u9694\u201c\u4e00\u79d2\u201d\uff0c\u8ba1\u6570\u5355\u5143\u7684\u6570\u503c\u5c31\u589e\u52a0\u4e00\uff0c\u5f53\u8ba1\u6570\u5355\u5143\u6570\u503c\u589e\u52a0\u5230\u201c\u8bbe\u5b9a\u7684\u95f9\u949f\u63d0\u9192\u65f6\u95f4\u201d\u65f6\uff0c\u8ba1\u6570\u5355\u5143\u5c31\u4f1a\u5411\u4e2d\u65ad\u7cfb\u7edf\u53d1\u51fa\u4e2d\u65ad\u7533\u8bf7\uff0c\u4ea7\u751f\u201c\u54cd\u94c3\u63d0\u9192\u201d\uff0c\u4f7f\u7a0b\u5e8f\u8df3\u8f6c\u5230\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d\u6267\u884c\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u5de5\u4f5c\u6a21\u5f0f<\/h3>\n\n\n\n
STC89C52\u7684T0\u548cT1\u5747\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a13\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668
\u6a21\u5f0f1\uff1a16\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a8\u4f4d\u81ea\u52a8\u91cd\u88c5\u6a21\u5f0f
\u6a21\u5f0f3\uff1a\u4e24\u4e2a8\u4f4d\u8ba1\u6570\u5668<\/p>\n\n\n\n
\u5de5\u4f5c\u6a21\u5f0f1\u6846\u56fe<\/p>\n\n\n\nSYSclk\uff1a\u7cfb\u7edf\u65f6\u949f\uff0c\u5373\u6676\u632f\u5468\u671f\uff0c\u672c\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u4e3a12MHz\u3002<\/figcaption><\/figure>\n\n\n\n\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u4e2d\u65ad\u7a0b\u5e8f\u6d41\u7a0b<\/h3>\n\n\n\n<\/figure>\n\n\n\nSTC89C52\u7cfb\u5217\u5355\u7247\u673a\u4e2d\u65ad\u6e90<\/h3>\n\n\n\n
\u4e2d\u65ad\u6e90\u4e2a\u6570\uff1a8\u4e2a\uff08\u5916\u90e8\u4e2d\u65ad0\u3001\u5b9a\u65f6\u56680\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad1\u3001\u5b9a\u65f6\u56681\u4e2d\u65ad\u3001\u4e32\u53e3\u4e2d\u65ad\u3001\u5b9a\u65f6\u56682\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad2\u3001\u5916\u90e8\u4e2d\u65ad3\uff09\u3002
\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\uff1a4\u4e2a\u3002
\u6ce8\u610f\uff1a\u4e2d\u65ad\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u4e2d\u65ad\u8d44\u6e90\uff0c\u4f8b\u5982\u4e2d\u65ad\u6e90\u4e2a\u6570\u4e0d\u540c\u3001\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\u4e0d\u540c\u7b49\u7b49<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u548c\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u6570\u5b57\u7535\u8def\u5143\u4ef6\u6807\u793a\uff1a<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u76f8\u5173\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u5bc4\u5b58\u5668\u662f\u8fde\u63a5\u8f6f\u786c\u4ef6\u7684\u5a92\u4ecb\u3002\u5728\u5355\u7247\u673a\u4e2d\u5bc4\u5b58\u5668\u5c31\u662f\u4e00\u6bb5\u7279\u6b8a\u7684RAM\u5b58\u50a8\u5668\uff0c\u4e00\u65b9\u9762\uff0c\u5bc4\u5b58\u5668\u53ef\u4ee5\u5b58\u50a8\u548c\u8bfb\u53d6\u6570\u636e\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u6bcf\u4e00\u4e2a\u5bc4\u5b58\u5668\u80cc\u540e\u90fd\u8fde\u63a5\u4e86\u4e00\u6839\u5bfc\u7ebf\uff0c\u63a7\u5236\u7740\u7535\u8def\u7684\u8fde\u63a5\u65b9\u5f0f\u3002\u5bc4\u5b58\u5668\u76f8\u5f53\u4e8e\u4e00\u4e2a\u590d\u6742\u673a\u5668\u7684\u201c\u64cd\u4f5c\u6309\u94ae\u201d\u3002<\/p>\n\n\n\n
TCON\uff1aTimer Control, \u5b9a\u65f6\u5668\u63a7\u5236\u3002
TF\uff1aTimer Flag\uff0c\u8ba1\u6570\u5668\u5230\u8fbe\u6700\u9ad8\u503c\u65f6\uff0c\u7531\u786c\u4ef6\u7f6e1\u3002
TR: Timer Run,TR=1,\u8ba1\u7b97\u5668\u5f00\u59cb\u8fd0\u884c\u3002
EA\uff1aEnable All<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nSTP-ISP\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u81ea\u52a8\u751f\u6210\u5b9a\u65f6\u5668\u914d\u7f6e\u4ee3\u7801<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5934\u6587\u4ef6<intrins.h>,_cror_\u5faa\u73af\u53f3\u79fb\uff0c_crol_\u5faa\u73af\u5de6\u79fb\u51fd\u6570<\/p>\n\n\n\n
\/\/\u5b9a\u65f6\u56680\u521d\u59cb\u5316\u53ca\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\n#include <REGX51.H>\n\n\/**\n * @brief \u5b9a\u65f6\u56680\u521d\u59cb\u5316\uff0c1\u6beb\u79d2@12Mhz\n * @param \u65e0\n * @retval \u65e0\n *\/\n\/\/\u53ef\u4ee5\u4f7f\u7528\u8f6f\u4ef6STP-ISP\u8f6f\u4ef6\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u529f\u80fd\u751f\u6210\u914d\u7f6e\u4ee3\u7801\nvoid Timer0_Init()\n{\n \tTMOD &= 0xF0;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x01;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTF0 = 0;\t\t\/\/\u6e05\u9664TF0\u6807\u5fd7\n\tTR0 = 1;\t\t\/\/\u5b9a\u65f6\u56680\u5f00\u59cb\u8ba1\n ET0=1;\n EA=1;\n PT0=0;\n}\n\n\/\/Timer0\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\uff0c\n\/\/void Timer0_Routine() interrupt 1\n\/\/{\n\/\/ static unsigned int T0Count;\n\/\/ TL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/ T0Count++;\n\/\/ if(T0Count>=1000)\n\/\/ {\n\/\/ T0Count=0;\n\/\/ P2_0=~P2_0;\n\/\/ }\n\/\/}<\/code><\/pre>\n\n\n\n\u4e32\u53e3\u901a\u4fe1<\/h2>\n\n\n\n
\u4e32\u53e3\u662f\u4e00\u79cd\u5e94\u7528\u5341\u5206\u5e7f\u6cdb\u7684\u901a\u8baf\u63a5\u53e3\uff0c\u4e32\u53e3\u6210\u672c\u4f4e\u3001\u5bb9\u6613\u4f7f\u7528\u3001\u901a\u4fe1\u7ebf\u8def\u7b80\u5355\uff0c\u53ef\u5b9e\u73b0\u4e24\u4e2a\u8bbe\u5907\u7684\u4e92\u76f8\u901a\u4fe1\u3002
\u5355\u7247\u673a\u7684\u4e32\u53e3\u53ef\u4ee5\u4f7f\u5355\u7247\u673a\u4e0e\u5355\u7247\u673a\u3001\u5355\u7247\u673a\u4e0e\u7535\u8111\u3001\u5355\u7247\u673a\u4e0e\u5404\u5f0f\u5404\u6837\u7684\u6a21\u5757\u4e92\u76f8\u901a\u4fe1\uff0c\u6781\u5927\u7684\u6269\u5c55\u4e86\u5355\u7247\u673a\u7684\u5e94\u7528\u8303\u56f4\uff0c\u589e\u5f3a\u4e86\u5355\u7247\u673a\u7cfb\u7edf\u7684\u786c\u4ef6\u5b9e\u529b\u3002
51\u5355\u7247\u673a\u5185\u90e8\u81ea\u5e26UART\uff08Universal Asynchronous Receiver Transmitter\uff0c\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff09\uff0c\u53ef\u5b9e\u73b0\u5355\u7247\u673a\u7684\u4e32\u53e3\u901a\u4fe1\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u53e3\u53ca\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u786c\u4ef6\u7535\u8def<\/h3>\n\n\n\n
\u7b80\u5355\u53cc\u5411\u4e32\u53e3\u901a\u4fe1\u6709\u4e24\u6839\u901a\u4fe1\u7ebf\uff08\u53d1\u9001\u7aefTXD\u548c\u63a5\u6536\u7aefRXD\uff09\u3002TXD: transmit exchange data\u3002TXD\u4e0eRXD\u8981\u4ea4\u53c9\u8fde\u63a5\u3002\u5f53\u53ea\u9700\u5355\u5411\u7684\u6570\u636e\u4f20\u8f93\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e00\u6839\u901a\u4fe1\u7ebf\u3002\u5f53\u7535\u5e73\u6807\u51c6\u4e0d\u4e00\u81f4\u65f6\uff0c\u9700\u8981\u52a0\u7535\u5e73\u8f6c\u6362\u82af\u7247\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u7535\u5e73\u6807\u51c6<\/h3>\n\n\n\n
\u7535\u5e73\u6807\u51c6\u662f\u6570\u636e1\u548c\u6570\u636e0\u7684\u8868\u8fbe\u65b9\u5f0f\uff0c\u662f\u4f20\u8f93\u7ebf\u7f06\u4e2d\u4eba\u4e3a\u89c4\u5b9a\u7684\u7535\u538b\u4e0e\u6570\u636e\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u4e32\u53e3\u5e38\u7528\u7684\u7535\u5e73\u6807\u51c6\u6709\u5982\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n
TTL\u7535\u5e73\uff1a+5V\u8868\u793a1\uff0c0V\u8868\u793a0\u3002 TTL\uff1atransistor transistor logic\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS232\u7535\u5e73\uff1a-3~-15V\u8868\u793a1\uff0c+3~+15V\u8868\u793a0\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS485\u7535\u5e73\uff1a\u4e24\u7ebf\u538b\u5dee+2~+6V\u8868\u793a1\uff0c-2~-6V\u8868\u793a0\uff08\u5dee\u5206\u4fe1\u53f7\uff1acan\u3001usb\u90fd\u662f\u5dee\u5206\u4fe1\u53f7\uff09\u53ef\u4f20\u8f93\u6700\u59271000\u7c73\u8ddd\u79bb\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u901a\u4fe1\u63a5\u53e3\u6bd4\u8f83<\/h3>\n\n\n\n\u6b64\u5916\u8fd8\u6709CAN\u3001USB\u7b49\u3002<\/figcaption><\/figure>\n\n\n\n\u5168\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u5728\u540c\u4e00\u65f6\u523b\u4e92\u76f8\u4f20\u8f93\u6570\u636e
\u534a\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u4e92\u76f8\u4f20\u8f93\u6570\u636e\uff0c\u4f46\u5fc5\u987b\u5206\u65f6\u590d\u7528\u4e00\u6839\u6570\u636e\u7ebf
\u5355\u5de5\uff1a\u901a\u4fe1\u53ea\u80fd\u6709\u4e00\u65b9\u53d1\u9001\u5230\u53e6\u4e00\u65b9\uff0c\u4e0d\u80fd\u53cd\u5411\u4f20\u8f93<\/p>\n\n\n\n
\u5f02\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u5404\u81ea\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387
\u540c\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u9760\u4e00\u6839\u65f6\u949f\u7ebf\u6765\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387<\/p>\n\n\n\n
\u603b\u7ebf\uff1a\u8fde\u63a5\u5404\u4e2a\u8bbe\u5907\u7684\u6570\u636e\u4f20\u8f93\u7ebf\u8def\uff08\u7c7b\u4f3c\u4e8e\u4e00\u6761\u9a6c\u8def\uff0c\u628a\u8def\u8fb9\u5404\u4f4f\u6237\u8fde\u63a5\u8d77\u6765\uff0c\u4f7f\u4f4f\u6237\u53ef\u4ee5\u76f8\u4e92\u4ea4\u6d41\uff09<\/p>\n\n\n\n
51\u5355\u7247\u673a\u7684UART<\/h3>\n\n\n\n
STC89C52\u67091\u4e2aUART<\/p>\n\n\n\n
STC89C52\u7684UART\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a\u540c\u6b65\u79fb\u4f4d\u5bc4\u5b58\u5668
\u6a21\u5f0f1\uff1a8\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a
\u6a21\u5f0f3\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8<\/p>\n\n\n\n
\u4e32\u53e3\u53c2\u6570\u53ca\u65f6\u5e8f\u56fe<\/h3>\n\n\n\n
\u6ce2\u7279\u7387\uff1a\u4e32\u53e3\u901a\u4fe1\u7684\u901f\u7387\uff08\u53d1\u9001\u548c\u63a5\u6536\u5404\u6570\u636e\u4f4d\u7684\u95f4\u9694\u65f6\u95f4\uff09\u3002\u6bd4\u7279\u7387\uff1a
\u68c0\u9a8c\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u9a8c\u8bc1
\u505c\u6b62\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u5e27\u95f4\u9694<\/p>\n\n\n\n8\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n9\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n\u4e32\u53e3\u6a21\u5f0f\u56fe<\/h3>\n\n\n\nSBUF\uff1a\u4e32\u53e3\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u4e0a\u662f\u4e24\u4e2a\u72ec\u7acb\u7684\u5bc4\u5b58\u5668\uff0c\u4f46\u5360\u7528\u76f8\u540c\u7684\u5730\u5740\u3002\u5199\u64cd\u4f5c\u65f6\uff0c\u5199\u5165\u7684\u662f\u53d1\u9001\u5bc4\u5b58\u5668\uff0c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u8bfb\u51fa\u7684\u662f\u63a5\u6536\u5bc4\u5b58\u5668\u3002<\/figcaption><\/figure>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/\u5355\u7247\u673aUART.c\u4ee3\u780120221130\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x40;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n<\/code><\/pre>\n\n\n\n\/\/\u5355\u7247\u673a1\u79d2\u5411\u7535\u8111\u53d1\u9001\u4e00\u4e2a\u6570\u636e20221130\n#include <REGX52.H>\n#include \"Delay.h\"\n#include \"UART.h\"\n\nunsigned char Sec;\n\nvoid main()\n{\n UART_Init();\n \n\twhile(1)\n\t{\n\t\tUART_SendByte(Sec);\n Sec++;\n Delayxms(1000);\n\t}\n}\n<\/code><\/pre>\n\n\n\n\/\/\u4e32\u53e3\u63a5\u6536\u6570\u636e\u4ee3\u7801\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x50;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n EA=1; \/\/\u542f\u52a8\u4e2d\u65ad\u529f\u80fd\n ES=1; \/\/\u5168\u80fd\u4e32\u4e32\u53e3\u4e2d\u65ad\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n\n\/\n\n\/\/\u4e32\u53e3\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6a21\u677f\n\/\/void UART_Routine() interrupt 4\n\/\/{\n\/\/ if(RI==1)\/\/\u63a5\u6536\u4e2d\u65ad\n\/\/ {\n\n\/\/ RI=0;\n\/\/ }\n\/\/ \n\/\/}<\/code><\/pre>\n\n\n\n\u6ce2\u7279\u7387\u8ba1\u7b97\uff1a<\/h3>\n\n\n\n
TL1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c
TH1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c<\/p>\n\n\n\n
0xF3\u4e3a234\uff0c\u81f3256\u670913\u4e2a\u6570\u3002\u572812T\u6a21\u5f0f\u4e0b\uff0c\u65f6\u949f\u6bcf1um\u8ba1\u4e00\u6b21\u6570\uff0c13\u5fae\u79d2\u6ea2\u51fa\u4e00\u6b21\u30021\/13us = 0.07692 Mhz\u3002 76920\/16=4807.69Hz 7.69\/4800=0.16\u8bef\u5dee\u3002<\/p>\n\n\n\n
\u6570\u636e\u663e\u793a\u6a21\u5f0f<\/h3>\n\n\n\n
HEX\u6a21\u5f0f\/\u5341\u516d\u8fdb\u5236\u6a21\u5f0f\/\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7684\u5f62\u5f0f\u663e\u793a\u3002
\u6587\u672c\u6a21\u5f0f\/\u5b57\u7b26\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7f16\u7801\u540e\u7684\u5f62\u5f0f\u663e\u793a\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f<\/h2>\n\n\n\n
LED\u70b9\u9635\u5c4f\u7531\u82e5\u5e72\u4e2a\u72ec\u7acb\u7684LED\u7ec4\u6210\uff0cLED\u4ee5\u77e9\u9635\u7684\u5f62\u5f0f\u6392\u5217\uff0c\u4ee5\u706f\u73e0\u4eae\u706d\u6765\u663e\u793a\u6587\u5b57\u3001\u56fe\u7247\u3001\u89c6\u9891\u7b49\u3002LED\u70b9\u9635\u5c4f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u516c\u5171\u573a\u5408\uff0c\u5982\u6c7d\u8f66\u62a5\u7ad9\u5668\u3001\u5e7f\u544a\u5c4f\u4ee5\u53ca\u516c\u544a\u724c\u7b49\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f\u5206\u7c7b
\u6309\u989c\u8272\uff1a\u5355\u8272\u3001\u53cc\u8272\u3001\u5168\u5f69
\u6309\u50cf\u7d20\uff1a8*8\u300116*16\u7b49\uff08\u5927\u89c4\u6a21\u7684LED\u70b9\u9635\u901a\u5e38\u7531\u5f88\u591a\u4e2a\u5c0f\u70b9\u9635\u62fc\u63a5\u800c\u6210\uff09\u3002<\/p>\n\n\n\n
\u663e\u793a\u539f\u7406<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nLED\u70b9\u9635\u5c4f\u7684\u7ed3\u6784\u7c7b\u4f3c\u4e8e\u6570\u7801\u7ba1\uff0c\u53ea\u4e0d\u8fc7\u662f\u6570\u7801\u7ba1\u628a\u6bcf\u4e00\u5217\u7684\u50cf\u7d20\u4ee5\u201c8\u201d\u5b57\u578b\u6392\u5217\u800c\u5df2\u3002
LED\u70b9\u9635\u5c4f\u4e0e\u6570\u7801\u7ba1\u4e00\u6837\uff0c\u6709\u5171\u9634\u548c\u5171\u9633\u4e24\u79cd\u63a5\u6cd5\uff0c\u4e0d\u540c\u7684\u63a5\u6cd5\u5bf9\u5e94\u7684\u7535\u8def\u7ed3\u6784\u4e0d\u540c\u3002
LED\u70b9\u9635\u5c4f\u9700\u8981\u8fdb\u884c\u9010\u884c\u6216\u9010\u5217\u626b\u63cf\uff0c\u624d\u80fd\u4f7f\u6240\u6709LED\u540c\u65f6\u663e\u793a\u3002<\/p>\n\n\n\n
74HC595<\/h3>\n\n\n\n
74HC595\u662f\u4e32\u884c\u8f93\u5165\u5e76\u884c\u8f93\u51fa\u7684\u79fb\u4f4d\u5bc4\u5b58\u5668\uff0c\u53ef\u75283\u6839\u7ebf\u8f93\u5165\u4e32\u884c\u6570\u636e\uff0c8\u6839\u7ebf\u8f93\u51fa\u5e76\u884c\u6570\u636e\uff0c\u591a\u7247\u7ea7\u8054\u540e\uff0c\u53ef\u8f93\u51fa16\u4f4d\u300124\u4f4d\u300132\u4f4d\u7b49\uff0c\u5e38\u7528\u4e8eIO\u53e3\u6269\u5c55\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nOE\uff1aoutput enable,\u4f4e\u7535\u5e73\u6709\u6548\u3002
RCLK\uff1aregister clock, \u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u9501\u5b58\u3002
SRCLR: serial clear, \u4e32\u884c\u6e05\u96f6\uff0c\u4f4e\u7535\u5e73\u6709\u6548\u3002
SRCLK\uff1a\u4e32\u884c\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u79fb\u4f4d\u3002
SER\uff1a\u4e32\u884c\u6570\u636e
QH’: \u591a\u7247\u7ea7\u8054\u3002<\/p>\n\n\n\n
C51\u7684sfr\u3001sbit<\/h3>\n\n\n\n
\u2022sfr\uff08special function register\uff09\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asfr P0 = 0x80;<\/p>\n\n\n\n
\u58f0\u660eP0\u53e3\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u5730\u5740\u4e3a0x80<\/p>\n\n\n\n
\u2022sbit\uff08special bit\uff09\uff1a\u7279\u6b8a\u4f4d\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asbit P0_1 = 0x81; \u6216 sbit P0_1 = P0^1;<\/p>\n\n\n\n
\u58f0\u660eP0\u5bc4\u5b58\u5668\u7684\u7b2c1\u4f4d<\/p>\n\n\n\n
\u2022\u53ef\u4f4d\u5bfb\u5740\/\u4e0d\u53ef\u4f4d\u5bfb\u5740\uff1a\u5728\u5355\u7247\u673a\u7cfb\u7edf\u4e2d\uff0c\u64cd\u4f5c\u4efb\u610f\u5bc4\u5b58\u5668\u6216\u8005\u67d0\u4e00\u4f4d\u7684\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u7ed9\u51fa\u5176\u7269\u7406\u5730\u5740\uff0c\u53c8\u56e0\u4e3a\u4e00\u4e2a\u5bc4\u5b58\u5668\u91cc\u67098\u4f4d\uff0c\u6240\u4ee5\u4f4d\u7684\u6570\u91cf\u662f\u5bc4\u5b58\u5668\u6570\u91cf\u76848\u500d\uff0c\u5355\u7247\u673a\u65e0\u6cd5\u5bf9\u6240\u6709\u4f4d\u8fdb\u884c\u7f16\u7801\uff0c\u6545\u6bcf8\u4e2a\u5bc4\u5b58\u5668\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u662f\u53ef\u4ee5\u4f4d\u5bfb\u5740\u7684\u3002\u5bf9\u4e0d\u53ef\u4f4d\u5bfb\u5740\u7684\u5bc4\u5b58\u5668\uff0c\u82e5\u8981\u53ea\u64cd\u4f5c\u5176\u4e2d\u4e00\u4f4d\u800c\u4e0d\u5f71\u54cd\u5176\u5b83\u4f4d\u65f6\uff0c\u53ef\u7528\u201c&=\u201d\u3001\u201c|=\u201d\u3001\u201c^=\u201d\u7684\u65b9\u6cd5\u8fdb\u884c\u4f4d\u64cd\u4f5c<\/p>\n\n\n\n
DS1302\u4ecb\u7ecd<\/h2>\n\n\n\n
DS1302\u662f\u7531\u7f8e\u56fdDALLAS\u516c\u53f8\u63a8\u51fa\u7684\u5177\u6709\u6d93\u7ec6\u7535\u6d41\u5145\u7535\u80fd\u529b\u7684\u4f4e\u529f\u8017\u5b9e\u65f6\u65f6\u949f\u82af\u7247\u3002\u5b83\u53ef\u4ee5\u5bf9\u5e74\u3001\u6708\u3001\u65e5\u3001\u5468\u3001\u65f6\u3001\u5206\u3001\u79d2\u8fdb\u884c\u8ba1\u65f6\uff0c\u4e14\u5177\u6709\u95f0\u5e74\u8865\u507f\u7b49\u591a\u79cd\u529f\u80fd\u3002
RTC(Real Time Clock)\uff1a\u5b9e\u65f6\u65f6\u949f\uff0c\u662f\u4e00\u79cd\u96c6\u6210\u7535\u8def\uff0c\u901a\u5e38\u79f0\u4e3a\u65f6\u949f\u82af\u7247\u3002
\u5355\u7247\u673a\u672c\u8eab\u65f6\u949f\u4e0d\u7cbe\u786e\u3001\u6d6a\u8d39CPU\u65f6\u95f4\u3001\u6389\u7535\u4e22\u5931\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nDS3231, \u6bd4DS1302\u7cbe\u5ea6\u9ad8\uff0c\u5185\u90e8\u81ea\u7cbe\u632f\u3002DS12C887.<\/p>\n\n\n\n
\u5f15\u811a\u5b9a\u4e49\u548c\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5bc4\u5b58\u5668\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u65f6\u5e8f\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\nBCD\u7801<\/h3>\n\n\n\n
BCD\u7801\uff08Binary Coded Decimal\u200e\uff09\uff0c\u75284\u4f4d\u4e8c\u8fdb\u5236\u6570\u6765\u8868\u793a1\u4f4d\u5341\u8fdb\u5236\u6570<\/p>\n\n\n\n
\u4f8b\uff1a0001 0011\u8868\u793a13\uff0c1000 0101\u8868\u793a85\uff0c0001 1010\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
\u5728\u5341\u516d\u8fdb\u5236\u4e2d\u7684\u4f53\u73b0\uff1a0x13\u8868\u793a13\uff0c0x85\u8868\u793a85\uff0c0x1A\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
BCD\u7801\u8f6c\u5341\u8fdb\u5236\uff1aDEC=BCD\/16*10+BCD%16; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\u5341\u8fdb\u5236\u8f6cBCD\u7801\uff1aBCD=DEC\/10*16+DEC%10; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\/\/20221202 DS1302\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\nsbit DS1302_SCLK=P3^6;\nsbit DS1302_IO=P3^4;\nsbit DS1302_CE=P3^5;\n\n#define DS1302_SECOND 0x80\n#define DS1302_MINUTE 0x82\n#define DS1302_HOUR 0x84\n#define DS1302_DATE 0x86\n#define DS1302_MONTH 0x88\n#define DS1302_DAY 0x8A\n#define DS1302_YEAR 0x8C\n#define DS1302_WP 0x8E\n\nunsigned char DS1302_Time[]={22,12,2,0,59,55,4}; \/\/\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u661f\u671f\n\nvoid DS1302_Init(void)\n{\n DS1302_CE=0;\n DS1302_SCLK=0;\n}\n\nvoid DS1302_WriteByte(unsigned char Command,Data)\n{\n unsigned char i;\n DS1302_CE=1;\n \n\n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Data&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n DS1302_CE=0;\n}\n\nunsigned char DS1302_ReadByte(unsigned char Command)\n{\n unsigned char i,Data=0x00;\n Command |= 0x01;\n DS1302_CE=1;\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=0;\n DS1302_SCLK=1;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n if(DS1302_IO){Data|=(0x01<<i);}\n }\n DS1302_CE=0;\n DS1302_IO=0;\n return Data; \n}\n\nvoid DS1302_SetTime(void)\n{\n DS1302_WriteByte(DS1302_WP,0x00);\/\/\u5173\u95ed\u5199\u4fdd\u62a4\n DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]\/10*16+DS1302_Time[0]%10);\n DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]\/10*16+DS1302_Time[1]%10);\n DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]\/10*16+DS1302_Time[2]%10);\n DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]\/10*16+DS1302_Time[3]%10);\n DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]\/10*16+DS1302_Time[4]%10);\n DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]\/10*16+DS1302_Time[5]%10);\n DS1302_WriteByte(DS1302_DAY,DS1302_Time[6]\/10*16+DS1302_Time[6]%10);\n DS1302_WriteByte(DS1302_WP,0x00); \/\/\u6253\u5f00\u5199\u4fdd\u62a4\n}\n\nvoid DS1302_ReadTime(void)\n{\n unsigned char Temp;\n Temp=DS1302_ReadByte(DS1302_YEAR);\n DS1302_Time[0]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MONTH);\n DS1302_Time[1]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DATE);\n DS1302_Time[2]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_HOUR);\n DS1302_Time[3]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MINUTE);\n DS1302_Time[4]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_SECOND);\n DS1302_Time[5]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DAY);\n DS1302_Time[6]=Temp\/16*10+Temp%16;\n}<\/code><\/pre>\n\n\n\n\/\/main.c LCD1602\u663e\u793a\u65f6\u949f\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"DS1302.h\"\n#include \"Delay.h\"\n\nvoid main()\n{\n LCD_Init();\n DS1302_Init();\n \n LCD_ShowString(1,1,\" - -\");\n LCD_ShowString(2,1,\" : :\");\n \n DS1302_SetTime();\n\n\twhile(1)\n\t{\n\t DS1302_ReadTime();\n LCD_ShowNum(1,1,DS1302_Time[0],2);\n LCD_ShowNum(1,4,DS1302_Time[1],2);\n LCD_ShowNum(1,7,DS1302_Time[2],2);\n LCD_ShowNum(2,1,DS1302_Time[3],2);\n LCD_ShowNum(2,4,DS1302_Time[4],2);\n LCD_ShowNum(2,7,DS1302_Time[5],2);\n\t}\n}\n<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u8702\u9e23\u5668<\/h2>\n\n\n\n
\u8702\u9e23\u5668\u662f\u4e00\u79cd\u5c06\u7535\u4fe1\u53f7\u8f6c\u6362\u4e3a\u58f0\u97f3\u4fe1\u53f7\u7684\u5668\u4ef6\uff0c\u5e38\u7528\u6765\u4ea7\u751f\u8bbe\u5907\u7684\u6309\u952e\u97f3\u3001\u62a5\u8b66\u97f3\u7b49\u63d0\u793a\u4fe1\u53f7\u3002
\u8702\u9e23\u5668\u6309\u9a71\u52a8\u65b9\u5f0f\u53ef\u5206\u4e3a\u6709\u6e90\u8702\u9e23\u5668\u548c\u65e0\u6e90\u8702\u9e23\u5668\u3002
\u6709\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u81ea\u5e26\u632f\u8361\u6e90\uff0c\u5c06\u6b63\u8d1f\u6781\u63a5\u4e0a\u76f4\u6d41\u7535\u538b\u5373\u53ef\u6301\u7eed\u53d1\u58f0\uff0c\u9891\u7387\u56fa\u5b9a\u3002
\u65e0\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u4e0d\u5e26\u632f\u8361\u6e90\uff0c\u9700\u8981\u63a7\u5236\u5668\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u624d\u53ef\u53d1\u58f0\uff0c\u8c03\u6574\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u7684\u9891\u7387\uff0c\u53ef\u53d1\u51fa\u4e0d\u540c\u9891\u7387\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u9a71\u52a8\u7535\u8def<\/h3>\n\n\n\n
\u4e09\u6781\u7ba1\u9a71\u52a8<\/p>\n\n\n\n<\/figure>\n\n\n\n\u96c6\u6210\u7535\u8def\u9a71\u52a8<\/p>\n\n\n\n<\/figure>\n\n\n\nULN2003\u82af\u7247<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u4ecb\u7ecd<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u7b80\u5316\u6a21\u578b<\/h3>\n\n\n\nPROM\u4e2d\u84dd\u8272\u4e8c\u7ea7\u7ba1\u5bb9\u6613\u88ab\u51fb\u7a7f\u3002\u4e00\u65e6\u51fb\u7a7f\uff0c\u5c31\u4e0d\u80fd\u66f4\u6539\u4e86\u3002\u6240\u4ee5\u79f0\u4e3a\u70e7\u5f55\u7a0b\u5e8f\u3002<\/figcaption><\/figure>\n\n\n\nAT24C02\u4ecb\u7ecd<\/h2>\n\n\n\n
AT24C02\u662f\u4e00\u79cd\u53ef\u4ee5\u5b9e\u73b0\u6389\u7535\u4e0d\u4e22\u5931\u7684\u5b58\u50a8\u5668\uff0c\u53ef\u7528\u4e8e\u4fdd\u5b58\u5355\u7247\u673a\u8fd0\u884c\u65f6\u60f3\u8981\u6c38\u4e45\u4fdd\u5b58\u7684\u6570\u636e\u4fe1\u606f\u3002
\u5b58\u50a8\u4ecb\u8d28\uff1aE2PROM\u3002
\u901a\u8baf\u63a5\u53e3\uff1aI2C\u603b\u7ebf\u3002
\u5bb9\u91cf\uff1a256\u5b57\u8282<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5f15\u811a<\/strong><\/td>\u529f\u80fd<\/strong><\/td><\/tr>VCC\u3001GND<\/td> \u7535\u6e90\uff081.8V~5.5V \uff09<\/td><\/tr> WP<\/td> \u5199\u4fdd\u62a4\uff08\u9ad8\u7535\u5e73\u6709\u6548\uff09<\/td><\/tr> SCL\u3001SDA<\/td> I2C\u63a5\u53e3<\/td><\/tr> A0\u3001A1\u3001A2<\/td> I2C\u5730\u5740<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\nX DEC\uff1aX\u8bd1\u7801\u5668<\/figcaption><\/figure>\n\n\n\nI2C\u603b\u7ebf\u4ecb\u7ecd<\/h2>\n\n\n\n
I2C\u603b\u7ebf(Inter IC BUS\uff09\u662f\u7531Philips\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e24\u6839\u901a\u4fe1\u7ebf\ufe30SCL (Serial Clock) \u3001SDA(Serial Data)\u3002
\u540c\u6b65\u3001\u534a\u53cc\u5de5\uff0c\u5e26\u6570\u636e\u5e94\u7b54\u3002
\u901a\u7528\u7684I2C\u603b\u7ebf\uff0c\u53ef\u4ee5\u4f7f\u5404\u79cd\u8bbe\u5907\u7684\u901a\u4fe1\u6807\u51c6\u7edf\u4e00\uff0c\u5bf9\u4e8e\u5382\u5bb6\u6765\u8bf4\uff0c\u4f7f\u7528\u6210\u719f\u7684\u65b9\u6848\u53ef\u4ee5\u7f29\u77ed\u82af\u7247\u8bbe\u8ba1\u5468\u671f
\u63d0\u9ad8\u7a33\u5b9a\u6027\uff0c\u5bf9\u4e8e\u5e94\u7528\u8005\u6765\u8bf4\uff0c\u4f7f\u7528\u901a\u7528\u7684\u901a\u4fe1\u534f\u8bae\u53ef\u4ee5\u907f\u514d\u5b66\u4e60\u5404\u79cd\u5404\u6837\u7684\u81ea\u5b9a\u4e49\u534f\u8bae\uff0c\u964d\u4f4e\u4e86\u5b66\u4e60\u548c\u5e94\u7528\u7684\u96be\u5ea6\u3002\u4f7f\u7528\u6709\u4e13\u5229\u8d39\u3002<\/p>\n\n\n\n1.0.92\u5bf8OLED\u5c4f\u5e55; 2.DS3631\u65f6\u949f\u82af\u7247; 3.MTU6050\u9640\u87ba\u4eea\u82af\u7247\u3002<\/figcaption><\/figure>\n\n\n\nI2C\u7535\u8def\u89c4\u8303<\/h2>\n\n\n\n
\u6240\u6709I2C\u8bbe\u5907\u7684SCL\u8fde\u5728\u4e00\u8d77\uff0cSDA\u8fde\u5728\u4e00\u8d77\u3002
\u8bbe\u5907\u7684SCL\u548cSDA\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
SCL\u548cSDA\u5404\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7KQ\u5de6\u53f3\u3002
\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u7684\u5171\u540c\u4f5c\u7528\u5b9e\u73b0\u4e86\u201c\u7ebf\u4e0e”\u7684\u529f\u80fd\uff0c\u6b64\u8bbe\u8ba1\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u591a\u673a\u901a\u4fe1\u4e92\u76f8\u5e72\u6270\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nI2C\u65f6\u5e8f\u7ed3\u6784<\/h2>\n\n\n\n\u8d77\u59cb\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u9ad8\u7535\u5e73\u5207\u6362\u5230\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n
\u7ec8\u6b62\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u4f4e\u7535\u5e73\u5207\u6362\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
SCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4e3b\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4ece\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u3002\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff1aSCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4ece\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4e3b\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n\u7d2b\u8272\u4ee3\u8868\u4ece\u673a\u63a7\u5236\u603b\u7ebf\u3002<\/figcaption><\/figure>\n\n\n\n\u53d1\u9001\u5e94\u7b54 (Send Ack)<\/h3>\n\n\n\n
\u5728\u63a5\u6536\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u53d1\u9001\u4e00\u4f4d\u6570\u636e\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\u3002<\/p>\n\n\n\n
\u63a5\u6536\u5e94\u7b54\uff08Receive Ack\uff09<\/h3>\n\n\n\n
\u5728\u53d1\u9001\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u63a5\u6536\u4e00\u4f4d\u6570\u636e\uff0c\u5224\u65ad\u4ece\u673a\u662f\u5426\u5e94\u7b54\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nI2C\u6570\u636e\u5e27<\/h2>\n\n\n\n\u53d1\u9001\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n\u524d7\u4f4d\u662f\u5730\u5740\uff0c\u5176\u4e2d\u524d4\u4f4d\u662f\u56fa\u5b9a\u7684\uff0c24C02\u56fa\u5b9a\u662f1010\uff0c\u662f\u82af\u7247\u516c\u53f8\u5ba1\u8bf7\u5230\u7684\u5730\u5740\u3002A3A2A1\u662f\u81ea\u5df1\u901a\u8fc7\u7535\u8def\u914d\u7f6e\u7684\u3002<\/figcaption><\/figure>\n\n\n\n\u63a5\u6536\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5148\u53d1\u9001\u518d\u63a5\u6536\u6570\u636e\u5e27\uff08\u590d\u5408\u683c\u5f0f\uff09<\/h3>\n\n\n\n<\/figure>\n\n\n\nAT24C02\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u5b57\u8282\u5199\uff1a\u5728WORD ADDRESS\u5904\u5199\u5165\u6570\u636eDATA<\/p>\n\n\n\n\u968f\u673a\u8bfb\uff1a\u8bfb\u51fa\u5728WORD ADDRESS\u5904\u7684\u6570\u636eDATA<\/figcaption><\/figure>\n\n\n\n<\/figure>\n\n\n\nAT24C02\u7684\u56fa\u5b9a\u5730\u5740\u4e3a1010\uff0c\u53ef\u914d\u7f6e\u5730\u5740\u672c\u5f00\u53d1\u677f\u4e0a\u4e3a000\uff0c\u6240\u4ee5SLAVE ADDRESS+W \u4e3a0xA0, SLAVE ADDRESS+R \u4e3a0xA1;<\/p>\n\n\n\n
\/\/I2C.c 20221204\n#include <REGX52.H>\n\nsbit I2C_SCL=P2^1;\nsbit I2C_SDA=P2^0;\n\n\n\/**\n * @brief I2C\u5f00\u59cb\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Start(void)\n{\n I2C_SDA=1;\n I2C_SCL=1;\n I2C_SDA=0;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u505c\u6b62\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Stop(void)\n{\n I2C_SDA=0;\n I2C_SCL=1;\n I2C_SDA=1;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte\u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid I2C_SendByte(unsigned char Byte)\n{\n unsigned char i;\n for(i=0;i<8;i++)\n {\n I2C_SDA=Byte&(0x80>>i);\n I2C_SCL=1;\n I2C_SCL=0;\n }\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u5230\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n *\/\nunsigned char I2C_ReceiveByte(void)\n{\n unsigned char i, Byte=0x00;\n \n I2C_SDA=1;\n for(i=0;i<8;i++)\n {\n I2C_SCL=1;\n if(I2C_SDA==1){Byte|=(0x80>>i);}\n I2C_SCL=0;\n }\n\n return Byte;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u5e94\u7b54\n * @param AckBit\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n * @retval \u65e0\n *\/\nvoid I2C_SendAck(unsigned char AckBit) \/\/bit \u662fC51\u7279\u6709\u7684\u6570\u636e\u7c7b\u578b\n{\n I2C_SDA=AckBit;\n I2C_SCL=1;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u5e94\u7b54\u4f4d\n * @param \u65e0\n * @retval AckBit\u63a5\u6536\u5230\u7684\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n *\/\nunsigned char I2C_ReceiveAck(void)\n{\n unsigned char AckBit;\n I2C_SDA=1;\n I2C_SCL=1;\n AckBit=I2C_SDA;\n I2C_SCL=0;\n return AckBit;\n}<\/code><\/pre>\n\n\n\n\/\/AT24C02.c 20221204\n#include <REGX52.H>\n#include \"I2C.h\"\n\n#define AT24C02_ADDRESS 0xA0\n\n\/**\n * @brief AT24C02\u5199\u5165\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u5199\u5165\u5b57\u8282\u7684\u5730\u5740\n * @param Data\u8981\u5199\u5165\u7684\u6570\u636e\n * @retval \u65e0\n *\/\nvoid AT24C02_WriteByte(unsigned char WordAddress,Data)\n{\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_SendByte(Data);\n I2C_ReceiveAck();\n I2C_Stop();\n}\n\n\/**\n * @brief AT24C02\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u8bfb\u51fa\u5b57\u8282\u7684\u5730\u5740\n * @retval \u8bfb\u51fa\u7684\u6570\u636e\n *\/\nunsigned char AT24C02_ReadByte(unsigned char WordAddress)\n{\n unsigned char Data;\n \n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS|0x01);\n I2C_ReceiveAck();\n Data=I2C_ReceiveByte();\n I2C_SendAck(1);\n I2C_Stop();\n \n return Data;\n}\n<\/code><\/pre>\n\n\n\n\/\/I2C AT24C02\u5b58\u5165\u5e76\u8bfb\u51fa\u4e00\u4e2a\u6570\u636e\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"Key.h\"\n#include \"AT24C02.h\"\n#include \"Delay.h\"\n\nunsigned char Data;\n\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Hello\");\n AT24C02_WriteByte(1,66); \/\/\u5730\u5740\u8303\u56f40~255\n Delayxms(5); \/\/\u5199\u5468\u671f\u4e3a5ms\uff0c\u5fc5\u987b\u7b49\u5f85\u4e00\u4e0b\n Data = AT24C02_ReadByte(1);\n \n LCD_ShowNum(2,1,Data,3);\n\twhile(1)\n\t{\n\t\t\n\t}\n}\n<\/code><\/pre>\n\n\n\nDS18B20\u6e29\u5ea6\u4f20\u611f\u5668<\/h2>\n\n\n\n
DS18B20\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u5b57\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5176\u63a7\u5236\u547d\u4ee4\u548c\u6570\u636e\u90fd\u662f\u4ee5\u6570\u5b57\u4fe1\u53f7\u7684\u65b9\u5f0f\u8f93\u5165\u8f93\u51fa\uff0c\u76f8\u6bd4\u8f83\u4e8e\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5177\u6709\u529f\u80fd\u5f3a\u5927\u3001\u786c\u4ef6\u7b80\u5355\u3001\u6613\u6269\u5c55\u3001\u6297\u5e72\u6270\u6027\u5f3a\u7b49\u7279\u70b9\u3002\uff08\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\u5982\u70ed\u654f\u7535\u963b\u3002\uff09
\u6d4b\u6e29\u8303\u56f4\uff1a-55\u00b0C \u5230 +125\u00b0C\u3002
\u901a\u4fe1\u63a5\u53e3\uff1a1-Wire\uff08\u5355\u603b\u7ebf\uff09\u3002
\u5176\u5b83\u7279\u5f81\uff1a\u53ef\u5f62\u6210\u603b\u7ebf\u7ed3\u6784\u3001\u5185\u7f6e\u6e29\u5ea6\u62a5\u8b66\u529f\u80fd\u3001\u53ef\u5bc4\u751f\u4f9b\u7535\uff08\u4e0d\u9700\u8981VCC\u4e5f\u53ef\u901a\u8fc7\u603b\u7ebf\u4f9b\u7535\uff09\u3002\u53ef\u4ee5\u5728\u4e00\u4e2a\u901a\u4fe1\u7ebf\u4e0a\u6302\u591a\u4e2a\u8bbe\u5907\u3002<\/p>\n\n\n\n1.TO92\u5c01\u88c5<\/figcaption><\/figure>\n\n\n\n\u5f15\u811a\u53ca\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\nVDD\uff1a\u7535\u6e90\uff083.0V\u20145.5V\uff09\u3002DQ\uff1a\u5355\u603b\u7ebf\u63a5\u53e3\u3002GND\uff1a\u5730\u3002<\/figcaption><\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n<\/figure>\n\n\n\n64-BIT ROM\uff1a\u4f5c\u4e3a\u5668\u4ef6\u5730\u5740\uff0c\u7528\u4e8e\u603b\u7ebf\u901a\u4fe1\u7684\u5bfb\u5740\u3002
SCRATCHPAD\uff08\u6682\u5b58\u5668\uff09\uff1a\u7528\u4e8e\u603b\u7ebf\u7684\u6570\u636e\u4ea4\u4e92\u3002
EEPROM\uff1a\u7528\u4e8e\u4fdd\u5b58\u6e29\u5ea6\u89e6\u53d1\u9608\u503c\u548c\u914d\u7f6e\u53c2\u6570\u3002<\/p>\n\n\n\n
\u5b58\u50a8\u5668\u7ed3\u6784<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u4ecb\u7ecd<\/h3>\n\n\n\n
\u5355\u603b\u7ebf\uff081-Wire BUS\uff09\u662f\u7531Dallas\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e00\u6839\u901a\u4fe1\u7ebf\uff1aDQ\u3002
\u5f02\u6b65\u3001\u534a\u53cc\u5de5\u3002
\u5355\u603b\u7ebf\u53ea\u9700\u8981\u4e00\u6839\u901a\u4fe1\u7ebf\u5373\u53ef\u5b9e\u73b0\u6570\u636e\u7684\u53cc\u5411\u4f20\u8f93\uff0c\u5f53\u91c7\u7528\u5bc4\u751f\u4f9b\u7535\u65f6\uff0c\u8fd8\u53ef\u4ee5\u7701\u53bb\u8bbe\u5907\u7684VDD\u7ebf\u8def\uff0c\u6b64\u65f6\uff0c\u4f9b\u7535\u52a0\u901a\u4fe1\u53ea\u9700\u8981DQ\u548cGND\u4e24\u6839\u7ebf\u3002<\/p>\n\n\n\n
\u5355\u603b\u7ebf\u7535\u8def\u89c4\u8303<\/h3>\n\n\n\n
\u8bbe\u5907\u7684DQ\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
DQ\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7K\u03a9\u5de6\u53f3\u3002
\u82e5\u6b64\u603b\u7ebf\u7684\u4ece\u673a\u91c7\u53d6\u5bc4\u751f\u4f9b\u7535\uff0c\u5219\u4e3b\u673a\u8fd8\u5e94\u914d\u4e00\u4e2a\u5f3a\u4e0a\u62c9\u8f93\u51fa\u7535\u8def\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u65f6\u5e8f\u7ed3\u6784<\/h3>\n\n\n\n\u521d\u59cb\u5316<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e\u81f3\u5c11480us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u7b49\u5f8515~60us\u540e\uff0c\u5b58\u5728\u7684\u4ece\u673a\u4f1a\u62c9\u4f4e\u603b\u7ebf60~240us\u4ee5\u54cd\u5e94\u4e3b\u673a\uff0c\u4e4b\u540e\u4ece\u673a\u5c06\u91ca\u653e\u603b\u7ebf\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e60~120us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90010\uff1b\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90011\u3002\u4ece\u673a\u5c06\u5728\u603b\u7ebf\u62c9\u4f4e30us\u540e\uff08\u5178\u578b\u503c\uff09\u8bfb\u53d6\u7535\u5e73\uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u5e76\u5728\u62c9\u4f4e\u540e15us\u5185\u8bfb\u53d6\u603b\u7ebf\u7535\u5e73\uff08\u5c3d\u91cf\u8d34\u8fd115us\u7684\u672b\u5c3e\uff09\uff0c\u8bfb\u53d6\u4e3a\u4f4e\u7535\u5e73\u5219\u4e3a\u63a5\u65360\uff0c\u8bfb\u53d6\u4e3a\u9ad8\u7535\u5e73\u5219\u4e3a\u63a5\u65361 \uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u53d1\u9001\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u63a5\u6536\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
DS18B20\u64cd\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n
\u521d\u59cb\u5316\uff1a\u4ece\u673a\u590d\u4f4d\uff0c\u4e3b\u673a\u5224\u65ad\u4ece\u673a\u662f\u5426\u54cd\u5e94\u3002
ROM\u64cd\u4f5c\uff1aROM\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002
\u529f\u80fd\u64cd\u4f5c\uff1a\u529f\u80fd\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nDS18B20\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u6e29\u5ea6\u53d8\u6362\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6e29\u5ea6\u8bfb\u53d6\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u8bfb\u6682\u5b58\u5668\u2192\u8fde\u7eed\u7684\u8bfb\u64cd\u4f5c<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6e29\u5ea6\u5b58\u50a8\u683c\u5f0f<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/20221206\u5355\u603b\u7ebf\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\n\/\/\u5f15\u811a\u5b9a\u4e49\nsbit OneWire_DQ=P3^7;\n\n\/**\n * @brief \u5355\u603b\u7ebf\u521d\u59cb\u5316\n * @param \u65e0\n * @retval \u4ece\u673a\u54cd\u5e94\u4f4d\uff0c0\u4e3a\u54cd\u5e94\uff0c1\u4e3a\u672a\u54cd\u5e94\n *\/\nunsigned char OneWire_Init(void)\n{\n\tunsigned char i;\n\tunsigned char AckBit;\n\tOneWire_DQ=1;\n\tOneWire_DQ=0;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\tOneWire_DQ=1;\n\ti = 32;while (--i);\t\t\t\/\/Delay 70us\n\tAckBit=OneWire_DQ;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\treturn AckBit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4f4d\n * @param Bit \u8981\u53d1\u9001\u7684\u4f4d\n * @retval \u65e0\n *\/\nvoid OneWire_SendBit(unsigned char Bit)\n{\n\tunsigned char i;\n\tOneWire_DQ=0;\n\ti = 4;while (--i);\t\t\t\/\/Delay 10us\n\tOneWire_DQ=Bit;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\tOneWire_DQ=1;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4f4d\n * @param \u65e0\n * @retval \u8bfb\u53d6\u7684\u4f4d\n *\/\nunsigned char OneWire_ReceiveBit(void)\n{\n\tunsigned char i;\n\tunsigned char Bit;\n\tOneWire_DQ=0;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tOneWire_DQ=1;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tBit=OneWire_DQ;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\treturn Bit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte \u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid OneWire_SendByte(unsigned char Byte)\n{\n\tunsigned char i;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tOneWire_SendBit(Byte&(0x01<<i));\n\t}\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u7684\u4e00\u4e2a\u5b57\u8282\n *\/\nunsigned char OneWire_ReceiveByte(void)\n{\n\tunsigned char i;\n\tunsigned char Byte=0x00;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tif(OneWire_ReceiveBit()){Byte|=(0x01<<i);}\n\t}\n\treturn Byte;\n}\n<\/code><\/pre>\n\n\n\n\/\/20221206 DS18B20\u6e29\u5ea6\u4f20\u611f\u5668\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n#include \"OneWire.h\"\n\n\/\/DS18B20\u6307\u4ee4\n#define DS18B20_SKIP_ROM\t\t\t0xCC\n#define DS18B20_CONVERT_T\t\t\t0x44\n#define DS18B20_READ_SCRATCHPAD \t0xBE\n\n\/**\n * @brief DS18B20\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid DS18B20_ConvertT(void)\n{\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_CONVERT_T);\n}\n\n\/**\n * @brief DS18B20\u8bfb\u53d6\u6e29\u5ea6\n * @param \u65e0\n * @retval \u6e29\u5ea6\u6570\u503c\n *\/\nfloat DS18B20_ReadT(void)\n{\n\tunsigned char TLSB,TMSB;\n\tint Temp;\n\tfloat T;\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_READ_SCRATCHPAD);\n\tTLSB=OneWire_ReceiveByte();\n\tTMSB=OneWire_ReceiveByte();\n\tTemp=(TMSB<<8)|TLSB;\n\tT=Temp\/16.0;\n\treturn T;\n}\n<\/code><\/pre>\n\n\n\nLCD1602<\/h2>\n\n\n\n
LCD1602\uff08Liquid Crystal Display\uff09\u6db2\u6676\u663e\u793a\u5c4f\u662f\u4e00\u79cd\u5b57\u7b26\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u53ef\u4ee5\u663e\u793aASCII\u7801\u7684\u6807\u51c6\u5b57\u7b26\u548c\u5176\u5b83\u7684\u4e00\u4e9b\u5185\u7f6e\u7279\u6b8a\u5b57\u7b26\uff0c\u8fd8\u53ef\u4ee5\u67098\u4e2a\u81ea\u5b9a\u4e49\u5b57\u7b26\u3002
\u5355\u7247\u673a\u4ecb\u7ecd<\/h2>\n\n\n\n\n\u5355\u7247\u673a\uff0c\u82f1\u6587Micro Controller Unit\uff0c\u7b80\u79f0MCU<\/p>\n\n\n\n
\u5185\u90e8\u96c6\u6210\u4e86CPU\u3001RAM\u3001ROM\u3001\u5b9a\u65f6\u5668\u3001\u4e2d\u65ad\u7cfb\u7edf\u3001\u901a\u8baf\u63a5\u53e3\u7b49\u4e00\u7cfb\u5217\u7535\u8111\u7684\u5e38\u7528\u786c\u4ef6\u529f\u80fd\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u4efb\u52a1\u662f\u4fe1\u606f\u91c7\u96c6\uff08\u4f9d\u9760\u4f20\u611f\u5668\uff09\u3001\u5904\u7406\uff08\u4f9d\u9760CPU\uff09\u548c\u786c\u4ef6\u8bbe\u5907\uff08\u4f8b\u5982\u7535\u673a\u3001LED\u7b49\uff09\u7684\u63a7\u5236\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u8ddf\u8ba1\u7b97\u673a\u76f8\u6bd4\uff0c\u5355\u7247\u673a\u7b97\u662f\u4e00\u4e2a\u8896\u73cd\u7248\u8ba1\u7b97\u673a\uff0c\u4e00\u4e2a\u82af\u7247\u5c31\u80fd\u6784\u6210\u5b8c\u6574\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u3002\u4f46\u5728\u6027\u80fd\u4e0a\uff0c\u4e0e\u8ba1\u7b97\u673a\u76f8\u5dee\u751a\u8fdc\uff0c\u4f46\u5355\u7247\u673a\u6210\u672c\u4f4e\u3001\u4f53\u79ef\u5c0f\u3001\u7ed3\u6784\u7b80\u5355\uff0c\u5728\u751f\u6d3b\u548c\u5de5\u4e1a\u63a7\u5236\u9886\u57df\u5927\u6709\u6240\u7528\u3002<\/p>\n\n\n\n
\u540c\u65f6\uff0c\u5b66\u4e60\u4f7f\u7528\u5355\u7247\u673a\u662f\u4e86\u89e3\u8ba1\u7b97\u673a\u539f\u7406\u4e0e\u7ed3\u6784\u7684\u6700\u4f73\u9009\u62e9<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u5e94\u7528\u9886\u57df\uff1a<\/h2>\n\n\n\n
\u5355\u7247\u673a\u7684\u4f7f\u7528\u9886\u57df\u5df2\u5341\u5206\u5e7f\u6cdb\uff0c\u5982\u667a\u80fd\u4eea\u8868\u3001\u5b9e\u65f6\u5de5\u63a7\u3001\u901a\u8baf\u8bbe\u5907\u3001\u5bfc\u822a\u7cfb\u7edf\u3001\u5bb6\u7528\u7535\u5668\u7b49\u3002\u5404\u79cd\u4ea7\u54c1\u4e00\u65e6\u7528\u4e0a\u4e86\u5355\u7247\u673a\uff0c\u5c31\u80fd\u8d77\u5230\u4f7f\u4ea7\u54c1\u5347\u7ea7\u6362\u4ee3\u7684\u529f\u6548\uff0c\u5e38\u5728\u4ea7\u54c1\u540d\u79f0\u524d\u51a0\u4ee5\u5f62\u5bb9\u8bcd\u2014\u2014\u201c\u667a\u80fd\u578b\u201d\uff0c\u5982\u667a\u80fd\u578b\u6d17\u8863\u673a\u7b49\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n51\u5355\u7247\u673a<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u662f\u5bf9\u517c\u5bb9\u82f1\u7279\u5c14<\/a>8051\u6307\u4ee4\u7cfb\u7edf<\/a>\u7684\u5355\u7247\u673a<\/a>\u7684\u7edf\u79f0\u3002<\/p>\n\n\n\n\u4e3b\u8981\u54c1\u724c\u53ca\u5176\u4ea7\u54c1<\/p>\n\n\n\n
\n- Intel\uff08\u82f1\u7279\u5c14<\/a>\uff09\uff1a80C31\u300180C51<\/a>\u300187C51\uff0c80C32\u300180C52\u300187C52\u7b49\uff1b<\/li>\n\n\n\n
- Atmel<\/a>\uff08\u827e\u7279\u6885\u5c14\uff09\uff1a89C51\u300189C52\u300189C2051\uff0c89S51(RC)\uff0c89S52(RC)\u7b49\uff1b<\/li>\n\n\n\n
- Philips\uff08\u98de\u5229\u6d66<\/a>\uff09\u3001\u534e\u90a6\u3001Dallas\uff08\u8fbe\u62c9\u65af\uff09\u3001Siemens\uff08\u897f\u95e8\u5b50<\/a>\uff09\u7b49\u516c\u53f8\u7684\u8bb8\u591a\u4ea7\u54c1\uff1b<\/li>\n\n\n\n
- STC\uff08\u5b8f\u6676\uff09\uff1aSTC89C51\u3001STC90C51\u3001STC11\u7cfb\u5217\u3001STC15\u7cfb\u5217\u3001STC8\u7cfb\u5217\u7b49\u3002 <\/sup><\/li>\n<\/ul>\n\n\n\n
STC89C52\u5355\u7247\u673a<\/h2>\n\n\n\n
\u6240\u5c5e\u7cfb\u5217\uff1a51\u5355\u7247\u673a\u7cfb\u5217
\u516c\u53f8\uff1aSTC\u516c\u53f8\uff0c \u4e2d\u56fd\u516c\u53f8\u3002
\u4f4d\u6570\uff1a8\u4f4d
RAM\uff1a512\u5b57\u8282
ROM\uff1a8K\uff08Flash\uff09
\u5de5\u4f5c\u9891\u7387\uff1a12MHZ<\/p>\n\n\n\n
\u547d\u540d\u89c4\u5219<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u62c6\u89e3<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u7ed3\u6784\u56fe<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u770b\u95e8\u72d7\uff1a\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u7684\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u7ba1\u811a\u56fe<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u4e0a\u65b9\u6709\u4e2a\u7f3a\u53e3\uff0c\u538b\u6746\u671d\u4e0a\u3002<\/p>\n\n\n\n
\u00b7<\/p>\n<\/div>\n\n\n\n
\u6700\u5c0f\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u65b0\u5efa\u5de5\u7a0b\uff1a<\/h2>\n\n\n\n
Keil5\u9009\u62e9CPU\u65f6\uff0c\u9009Atmel,STC\u548cAT\u57fa\u672c\u64cd\u4f5c\u662f\u4e00\u6837\u7684\u3002\u9009\u62e9AT89C51\u6216AT89C52\u90fd\u884c\u3002\u5185\u6838\u90fd\u662f\u4e00\u6837\u7684\u3002\u4e0d\u9700\u8981\u590d\u5236\u542f\u52a8\u6587\u4ef6\uff0c\u56e0\u4e3aKeil\u5df2\u7ecf\u96c6\u6210\u4e86\u3002<\/p>\n\n\n\n
LED\u53d1\u5149\u4e8c\u6781\u7ba1 light emitting diode<\/h2>\n\n\n\n
\u7528\u6765\u7167\u660e\u3001\u5e7f\u544a\u706f\u3001\u6307\u5f15\u706f\u3001\u5c4f\u5e55\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6392\u963b\uff0c\u7b80\u79f0RP\uff0c\uff08Resistance Pack\uff09102\u4ee3\u88681000\u6b27\uff1a10*10\u76842\u6b21\u65b9; 473\u4e3a47*1000=47K\u6b27\u3002\u6709\u65f6\u67094\u4f4d\u6570\u8868\u793a\u59821001\uff0c\u524d\u4e09\u4f4d\u4e3a\u6709\u6548\u6570\u5b57\uff0c\u7b2c4\u4f4d\u4e3a\u500d\u7387\u5373100*10=1000\u6b27\u3002\u7535\u4f4d\u5668\u6807103\u5373\u4ee3\u886810*1000=10K\u6b27\u3002\u9650\u6d41\u7535\u963b\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u70b9\u4eaeLED\uff0c\u8f6c\u53d8\u4e3a\u63a7\u5236\u76f8\u5e94\u5f15\u811a\u9ad8\u4f4e\u7535\u5e73\u3002 <\/p>\n\n\n\n
Keil\u9ed8\u8ba4\u4e0d\u751f\u6210.hex\u6587\u4ef6\uff0c\u9700\u8981\u914d\u7f6e\u3002<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u4e00\u4e2aLED\u706f\uff0c\u5171\u5730\u63a5\u6cd5\n#include <REGX51.H>\n\nvoid main()\n{\n P2=0x01;\n while(1)\n {\n \n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\/\/LED\u95ea\u70c1\u4ee3\u7801\n#include <REGX51.H>\n#include <INTRINS.H> \/\/\u5305\u542b_nop_()\u51fd\u6570\u539f\u578b\n\nvoid Delayxms(unsigned int xms)\t\t\/\/@12.000MHz\n{\n unsigned char i, j;\n while(xms--)\n {\n i = 2;\n j = 239;\n do\n {\n while (--j);\n } while (--i);\n }\n}\n\nvoid main(void)\n{\n P2=0xFF;\n while(1)\n {\n P2=0xFF;\n Delayxms(500);\n P2=0x00;\n Delayxms(500);\n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\u72ec\u7acb\u6309\u952e<\/h2>\n\n\n\n
\u2022\u8f7b\u89e6\u6309\u952e\uff1a\u76f8\u5f53\u4e8e\u662f\u4e00\u79cd\u7535\u5b50\u5f00\u5173\uff0c\u6309\u4e0b\u65f6\u5f00\u5173\u63a5\u901a\uff0c\u677e\u5f00\u65f6\u5f00\u5173\u65ad\u5f00\uff0c\u5b9e\u73b0\u539f\u7406\u662f\u901a\u8fc7\u8f7b\u89e6\u6309\u952e\u5185\u90e8\u7684\u91d1\u5c5e\u5f39\u7247\u53d7\u529b\u5f39\u52a8\u6765\u5b9e\u73b0\u63a5\u901a\u548c\u65ad\u5f00\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nsfr\u5168\u79f0\u4e3a\uff1aspecial function register\uff08\u7ffb\u8bd1\u4e3a\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\uff09\u3002
sbit\uff1a\u4f4d\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u5934\u6587\u4ef6REGX.H \u6709\u4f4d\u58f0\u660e\uff0cREG.H\u6ca1\u6709\u4f4d\u58f0\u660e\u3002<\/p>\n\n\n\n
\/\/\u6309\u4e0b\u6309\u952eLED\u4eae\uff0c\u677e\u624bLED\u706d\n#include <REGX52.H>\n\nvoid main()\n{\n P2=0x00;\n while(1)\n {\n if(P0_0==0)\n {\n P2_0=1;\n }\n else\n {\n P2_0=0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\u6309\u952e\u7684\u6296\u52a8<\/h3>\n\n\n\n
\u5bf9\u4e8e\u673a\u68b0\u5f00\u5173\uff0c\u5f53\u673a\u68b0\u89e6\u70b9\u65ad\u5f00\u3001\u95ed\u5408\u65f6\uff0c\u7531\u4e8e\u673a\u68b0\u89e6\u70b9\u7684\u5f39\u6027\u4f5c\u7528\uff0c\u4e00\u4e2a\u5f00\u5173\u5728\u95ed\u5408\u65f6\u4e0d\u4f1a\u9a6c\u4e0a\u7a33\u5b9a\u5730\u63a5\u901a\uff0c\u5728\u65ad\u5f00\u65f6\u4e5f\u4e0d\u4f1a\u4e00\u4e0b\u5b50\u65ad\u5f00\uff0c\u6240\u4ee5\u5728\u5f00\u5173\u95ed\u5408\u53ca\u65ad\u5f00\u7684\u77ac\u95f4\u4f1a\u4f34\u968f\u4e00\u8fde\u4e32\u7684\u6296\u52a8\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6d88\u6296\uff1a\u786c\u4ef6\u6d88\u6296; \u8f6f\u4ef6\u6d88\u6296\u3002<\/p>\n\n\n\n
\u68c0\u6d4b\u677e\u624b\uff1a<\/p>\n\n\n\n
\/\/\u6309\u952e\u63a7\u5236LED\u706f\u4eae\u706d\u72b6\u6001\u5207\u6362\nvoid main()\n{\n P2=0x00;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(20);\/\/\u6d88\u6296\n while(P0_0==0); \/\/\u677e\u624b\u68c0\u6d4b\n Delayxms(20);\n P2_0=~P2_0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\/\/\u7b2c\u4e00\u4e2a\u6309\u952e\u63a7\u5236\u5411\u5de6\u6d41\u6c34\u706f\uff0c\u7b2c\u4e8c\u4e2a\u6309\u952e\u63a7\u5236\u5411\u53f3\u6d41\u6c34\u706f\nvoid main()\n{\n unsigned char LEDNum=0;\n P2=0x01;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n LEDNum++;\n if(LEDNum>=8)\n LEDNum=0;\n P2=0x01<<LEDNum;\n }\n if(P0_1==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n if(LEDNum==0)\n LEDNum=8;\n LEDNum--;\n if(LEDNum<0)\n LEDNum=8;\n P2=0x01<<LEDNum;\n }\n }\n}<\/code><\/pre>\n\n\n\n\/\/\u72ec\u7acb\u6309\u952e\u83b7\u53d6\u952e\u503c\n#include <REGX51.H>\n#include \"Delay.h\"\n\n\/**\n * @brief \u83b7\u53d6\u72ec\u7acb\u6309\u952e\u952e\u7801\n * @param \u65e0 \n * @retval \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\uff0c\u8303\u56f40-8\uff0c\u65e0\u6309\u952e\u6309\u4e0b\uff0c\u8fd4\u56de0;\n *\/\nunsigned char Key()\n{\n unsigned char KeyNumber=0;\n \n if(P0_0==0){Delayxms(50);while(P0_0==0);Delayxms(50);KeyNumber=1;}\n if(P0_1==0){Delayxms(50);while(P0_1==0);Delayxms(50);KeyNumber=2;}\n if(P0_2==0){Delayxms(50);while(P0_2==0);Delayxms(50);KeyNumber=3;}\n if(P0_3==0){Delayxms(50);while(P0_3==0);Delayxms(50);KeyNumber=4;}\n if(P0_4==0){Delayxms(50);while(P0_4==0);Delayxms(50);KeyNumber=5;}\n if(P0_5==0){Delayxms(50);while(P0_5==0);Delayxms(50);KeyNumber=6;}\n if(P0_6==0){Delayxms(50);while(P0_6==0);Delayxms(50);KeyNumber=7;}\n if(P0_7==0){Delayxms(50);while(P0_7==0);Delayxms(50);KeyNumber=8;}\n \n return KeyNumber;\n}\n<\/code><\/pre>\n\n\n\n\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u7279\u6b8a\u7684\u5b58\u50a8\u5668\uff0c\u4ee58\u4e2a\u4e3a\u4e00\u7ec4\uff0c\u6bcf\u4e2a\u4f4d\u540e\u9762\u90fd\u8fde\u7740\u4e00\u6839\u7ebf\u901a\u8fc7\u9a71\u52a8\u5668\u63a7\u5236\u76f8\u5e94\u7535\u8def\u3002\u9a71\u52a8\u5668\u4e3a\u4e86\u589e\u5927\u9a71\u52a8\u80fd\u529b\u3002CPU\u76f4\u63a5\u8bfb\u5199\u5bc4\u5b58\u5668\uff0c\u5bc4\u5b58\u5668\u901a\u8fc7\u9a71\u52a8\u5668\u9a71\u52a8IO\u53e3\u3002<\/p>\n\n\n\n
\u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73\u7684\u95ee\u9898\u8f6c\u5316\u4e3a\u8bfb\u5199\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n
\u6570\u7801\u7ba1<\/h2>\n\n\n\n
\u2022LED\u6570\u7801\u7ba1\uff1a\u6570\u7801\u7ba1\u662f\u4e00\u79cd\u7b80\u5355\u3001\u5ec9\u4ef7\u7684\u663e\u793a\u5668\uff0c\u662f\u7531\u591a\u4e2a\u53d1\u5149\u4e8c\u6781\u7ba1\u5c01\u88c5\u5728\u4e00\u8d77\u7ec4\u6210\u201c8\u201d\u5b57\u578b\u7684\u5668\u4ef6<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6570\u7801\u7ba1\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5171\u9634\u3001\u5171\u9633\u63a5\u6cd5\u3002
\u4f4d\u9009\u3001\u6bb5\u9009\u3001\u6bb5\u7801\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n74LS138\u300174HC138\uff1a\u4e09\u516b\u8bd1\u7801\u5668<\/h3>\n\n\n\n
\u5176\u4e2dLS\u6216HC\u4ee3\u8868\u7535\u538b\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n74HC245\uff1a\u53cc\u5411\u6570\u636e\u7f13\u51b2\u5668\uff08\u53c8\u79f0\u4e3a\u9501\u5b58\u5668\uff09<\/p>\n\n\n\n
OE: output enable\u3002 \u82af\u7247\u4f7f\u80fd
DIR: direction \u65b9\u5411<\/p>\n\n\n\n
\u7535\u5bb9\uff1a\u6807\u7740104\uff0c\u5bb9\u91cf\u4e3a10 0000pF\uff0c nF uF mF F<\/p>\n\n\n\n
\/\/\u70b9\u4eae\u52a8\u6001\u6570\u7801\u7ba1\u67d0\u4e00\u4f4d\n#include <REGX51.H>\n\/\/P2\u901a\u8fc7138\u8bd1\u7801\u5668\u4f4d\u9009\n\/\/P0\u901a\u8fc774HC573D\u6bb5\u9009\nvoid main(void)\n{\n P2=0x02; \/\/\u9009\u7b2c\u4e09\u4f4d\n \/\/\u663e\u793a\u6570\u5b576\uff0c\u9700\u8981a\u5bf9\u5e94P0_7 c\u5bf9\u5e94P0_5 d_4 e_3 f_2 g_1\u4eae\uff0c b_6 dp_0\u706d 0111 1101 7D\n P0=0x7D;\n while(1)\n { \n }\n}<\/code><\/pre>\n\n\n\n\/\/\u6307\u5b9a\u52a8\u6001\u6570\u7801\u7ba1\u7b2c\u51e0\u4f4d\u663e\u793a\u4ec0\u4e48\u6570\u5b57\uff0c\n\/\/Location \u4ece1\u52308\uff0c8\u4e2a\u6570\u7801\u7ba1\u4ece\u5de6\u5f80\u53f31\u30012\u2026\u20268\u6392\u5e8f\nvoid Nixie(unsigned char Location,unsigned char Number)\n{\n switch(Location)\n {\n case 8: P2_2=1; P2_1=1; P2_0=1;break;\n case 7: P2_2=1; P2_1=1; P2_0=0;break;\n case 6: P2_2=1; P2_1=0; P2_0=1;break;\n case 5: P2_2=1; P2_1=0; P2_0=0;break;\n case 4: P2_2=0; P2_1=1; P2_0=1;break;\n case 3: P2_2=0; P2_1=1; P2_0=0;break;\n case 2: P2_2=0; P2_1=0; P2_0=1;break;\n case 1: P2_2=0; P2_1=0; P2_0=0;break;\n default:\n break;\n };\n P0=NixieTable[Number];\n}\n<\/code><\/pre>\n\n\n\n\u6570\u7801\u7ba1\u6d88\u5f71\uff1a\u4f4d\u9009\u3001\u6bb5\u9009\uff0c\u4e0b\u4e00\u4e2a\u4f4d\u9009\uff0c\u4e0b\u4e00\u4e0b\u6bb5\u9009<\/p>\n\n\n\n
\u6570\u7801\u7ba1\u9a71\u52a8\u65b9\u5f0f<\/h3>\n\n\n\n
\u2022\u5355\u7247\u673a\u76f4\u63a5\u626b\u63cf\uff1a\u786c\u4ef6\u8bbe\u5907\u7b80\u5355\uff0c\u4f46\u4f1a\u8017\u8d39\u5927\u91cf\u7684\u5355\u7247\u673aCPU\u65f6\u95f4<\/p>\n\n\n\n
\u2022\u4e13\u7528\u9a71\u52a8\u82af\u7247\uff1a\u5185\u90e8\u81ea\u5e26\u663e\u5b58\u3001\u626b\u63cf\u7535\u8def\uff0c\u5355\u7247\u673a\u53ea\u9700\u544a\u8bc9\u5b83\u663e\u793a\u4ec0\u4e48\u5373\u53ef<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nLCD1602\u8c03\u8bd5\u5de5\u5177<\/h2>\n\n\n\n
\u4f7f\u7528LCD1602\u6db2\u6676\u5c4f\u4f5c\u4e3a\u8c03\u8bd5\u7a97\u53e3\uff0c\u63d0\u4f9b\u7c7b\u4f3cprintf\u51fd\u6570\u7684\u529f\u80fd\uff0c\u53ef\u5b9e\u65f6\u89c2\u5bdf\u5355\u7247\u673a\u5185\u90e8\u6570\u636e\u7684\u53d8\u6362\u60c5\u51b5\uff0c\u4fbf\u4e8e\u8c03\u8bd5\u548c\u6f14\u793a\u3002<\/p>\n\n\n\n
\u672c\u89c6\u9891\u63d0\u4f9b\u7684LCD1602\u4ee3\u7801\u5c5e\u4e8e\u6a21\u5757\u5316\u7684\u4ee3\u7801\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u8981\u77e5\u9053\u6240\u63d0\u4f9b\u51fd\u6570\u7684\u4f5c\u7528\u548c\u4f7f\u7528\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u4f7f\u7528LCD1602<\/p>\n\n\n\n\u51fd\u6570<\/strong><\/td>\u4f5c\u7528<\/strong><\/td><\/tr>LCD_Init();<\/td> \u521d\u59cb\u5316<\/td><\/tr> LCD_ShowChar(1,1,’A’);<\/td> \u663e\u793a\u4e00\u4e2a\u5b57\u7b26<\/td><\/tr> LCD_ShowString(1,3,”Hello”);<\/td> \u663e\u793a\u5b57\u7b26\u4e32<\/td><\/tr> LCD_ShowNum(1,9,123,3);<\/td> \u663e\u793a\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowSignedNum(1,13,-66,2);<\/td> \u663e\u793a\u6709\u7b26\u53f7\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowHexNum(2,1,0xA8,2);<\/td> \u663e\u793a\u5341\u516d\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowBinNum(2,4,0xAA,8);<\/td> \u663e\u793a\u4e8c\u8fdb\u5236\u6570\u5b57<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u77e9\u9635\u952e\u76d8<\/h2>\n\n\n\n
\u2022\u5728\u952e\u76d8\u4e2d\u6309\u952e\u6570\u91cf\u8f83\u591a\u65f6\uff0c\u4e3a\u4e86\u51cf\u5c11I\/O\u53e3\u7684\u5360\u7528\uff0c\u901a\u5e38\u5c06\u6309\u952e\u6392\u5217\u6210\u77e9\u9635\u5f62\u5f0f<\/p>\n\n\n\n
\u2022\u91c7\u7528\u9010\u884c\u6216\u9010\u5217\u7684\u201c\u626b\u63cf\u201d\uff0c\u5c31\u53ef\u4ee5\u8bfb\u51fa\u4efb\u4f55\u4f4d\u7f6e\u6309\u952e\u7684\u72b6\u6001<\/p>\n\n\n\n<\/figure>\n\n\n\n\u626b\u63cf<\/h3>\n\n\n\n
\u6570\u7801\u7ba1\u626b\u63cf\uff08\u8f93\u51fa\u626b\u63cf\uff09 \u539f\u7406\uff1a\u663e\u793a\u7b2c1\u4f4d\u2192\u663e\u793a\u7b2c2\u4f4d\u2192\u663e\u793a\u7b2c3\u4f4d\u2192\u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6570\u7801\u7ba1\u540c\u65f6\u663e\u793a\u7684\u6548\u679c<\/p>\n\n\n\n
\u77e9\u9635\u952e\u76d8\u626b\u63cf\uff08\u8f93\u5165\u626b\u63cf\uff09\u539f\u7406\uff1a\u8bfb\u53d6\u7b2c1\u884c(\u5217)\u2192\u8bfb\u53d6\u7b2c2\u884c(\u5217) \u2192\u8bfb\u53d6\u7b2c3\u884c(\u5217) \u2192 \u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6309\u952e\u540c\u65f6\u68c0\u6d4b\u7684\u6548\u679c<\/p>\n\n\n\n
\u4ee5\u4e0a\u4e24\u79cd\u626b\u63cf\u65b9\u5f0f\u7684\u5171\u6027\uff1a\u8282\u7701I\/O\u53e3\u3002<\/p>\n\n\n\n
IO\u53e3\u5f31\u4e0a\u62c9\u6a21\u5f0f<\/h3>\n\n\n\n
\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
P1\u3001P2\u3001P3\u90fd\u662f\u5f31\u4e0a\u62c9\uff0cP0\u5f00\u6f0f\u8f93\u51fa\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nKeil5\u6a21\u677f\u529f\u80fd<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u7a0b\u5e8f\u6ce8\u91ca\u8303\u4f8b<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u6700\u597d\u521b\u5efa\u4e00\u4e2a\u6ce8\u91ca\u6a21\u677f\u3002<\/p>\n\n\n\n
\u6ce8\u91ca\u7f16\u8bd1\u5668\uff0c\u6839\u636e\u7279\u5b9a\u683c\u5f0f\uff0c\u4ece\u4ee3\u7801\u4e2d\u63d0\u53d6\u6ce8\u91ca\u5f62\u6210\u7279\u5b9a\u8bf4\u660e\u6587\u6863\u3002<\/p>\n\n\n\n
\/\/20221129\u77e9\u9635\u952e\u76d8\u83b7\u53d6\u952e\u7801\n#include <REGX51.H>\n#include \"Delay.h\"\n\/**\n * @brief \u77e9\u9635\u952e\u76d8\uff0c\u8bfb\u53d6\u6309\u952e\u952e\u7801\n * @param \u65e0\n * @retval KeyNumber \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\u503c\n * \u5982\u679c\u6309\u952e\u6309\u4e0b\u4e0d\u653e\uff0c\u7a0b\u5e8f\u4f1a\u505c\u7559\u5728\u6b64\u51fd\u6570\uff0c\u677e\u624b\u7684\u4e00\u77ac\u95f4\uff0c\u8fd4\u56de\u952e\u7801\uff0c\u6ca1\u6709\u6309\u952e\uff0c\u8fd4\u56de0;\n *\/\nunsigned char MatrixKey()\n{\n unsigned char KeyNumber=0;\n \n \/\/\u6309\u5217\u626b\u63cf\n P1=0xFF;\n P1_3=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=1;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=5;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=9;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=13;}\n \n P1=0xFF;\n P1_2=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=2;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=6;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=10;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=14;}\n \n P1=0xFF;\n P1_1=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=3;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=7;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=11;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=15;}\n \n P1=0xFF;\n P1_0=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=4;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=8;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=12;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=16;}\n \n Delayxms(100);\n \n return KeyNumber;\n}<\/code><\/pre>\n\n\n\n\/\/20221129\u77e9\u9635\u952e\u76d8\u5bc6\u7801\u9501\n#include <REGX51.H>\n#include \"Delay.h\"\n#include \"LCD1602.h\"\n#include \"MatrixKey.h\"\n\nunsigned char KeyNum;\nunsigned int Password,Count;\n\n\/\/s10\u4ee3\u88680 s11\u786e\u8ba4\u952e s12\u53d6\u6d88\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Password:\");\n while(1)\n {\n KeyNum=MatrixKey();\n if(KeyNum)\n {\n if(KeyNum<=10 && Count<4) \/\/\u5982\u679c\u952e\u7801S1~S10\u6309\u4e0b\uff0c\u8f93\u5165\u5bc6\u7801\n {\n Password*=10; \/\/\u5bc6\u7801\u5de6\u79fb1\u4f4d\n Password+=KeyNum%10;\/\/\u83b7\u53d61\u4f4d\u5bc6\u7801\n Count++;\/\/\u8ba1\u6b21\u52a01\n }\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n \n if(KeyNum==11 && Count==4)\/\/\u5982\u679cS11\u6309\u952e\u6309\u4e0b\uff0c\u5224\u65ad\u662f\u5426\u662f4\u4f4d\uff0c\u5982\u679c\u662f\uff0c\u5219\u9a8c\u8bc1\u5bc6\u7801\n {\n if(Password==2345)\n {\n LCD_ShowString(1,14,\"OK \");\n }\n else\n {\n LCD_ShowString(1,14,\"ERR\");\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n }\n \n if(KeyNum==12)\/\/\u5982\u679cS12\u53d6\u6d88\n {\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n } \n }\n}\n<\/code><\/pre>\n\n\n\n\u5b9a\u65f6\u5668<\/h2>\n\n\n\n
51\u5355\u7247\u673a\u7684\u5b9a\u65f6\u5668\u5c5e\u4e8e\u5355\u7247\u673a\u7684\u5185\u90e8\u8d44\u6e90\uff0c\u5176\u7535\u8def\u7684\u8fde\u63a5\u548c\u8fd0\u8f6c\u5747\u5728\u5355\u7247\u673a\u5185\u90e8\u5b8c\u6210<\/p>\n\n\n\n
\u5b9a\u65f6\u5668\u4f5c\u7528\uff1a<\/p>\n\n\n\n
\uff081\uff09\u7528\u4e8e\u8ba1\u65f6\u7cfb\u7edf\uff0c\u53ef\u5b9e\u73b0\u8f6f\u4ef6\u8ba1\u65f6\uff0c\u6216\u8005\u4f7f\u7a0b\u5e8f\u6bcf\u9694\u4e00\u56fa\u5b9a\u65f6\u95f4\u5b8c\u6210\u4e00\u9879\u64cd\u4f5c
\uff082\uff09\u66ff\u4ee3\u957f\u65f6\u95f4\u7684Delay\uff0c\u63d0\u9ad8CPU\u7684\u8fd0\u884c\u6548\u7387\u548c\u5904\u7406\u901f\u5ea6\u2026\u2026
\uff083\uff09\u591a\u4efb\u52a1\u5207\u6362\u5b9a\u65f6\u2026\u2026<\/p>\n\n\n\n
STC89C52\u5b9a\u65f6\u5668\u8d44\u6e90<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u4e2a\u6570\uff1a3\u4e2a\uff08T0\u3001T1\u3001T2\uff09\uff0cT0\u548cT1\u4e0e\u4f20\u7edf\u768451\u5355\u7247\u673a\u517c\u5bb9\uff0cT2\u662f\u6b64\u578b\u53f7\u5355\u7247\u673a\u589e\u52a0\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a\u5b9a\u65f6\u5668\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u5b9a\u65f6\u5668\u4e2a\u6570\u548c\u64cd\u4f5c\u65b9\u5f0f\uff0c\u4f46\u4e00\u822c\u6765\u8bf4\uff0cT0\u548cT1\u7684\u64cd\u4f5c\u65b9\u5f0f\u662f\u6240\u670951\u5355\u7247\u673a\u6240\u5171\u6709\u7684\u3002<\/p>\n\n\n\n
\u5b9a\u65f6\u671f\u6846\u56fe<\/h3>\n\n\n\n
\u5b9a\u65f6\u5668\u5728\u5355\u7247\u673a\u5185\u90e8\u5c31\u50cf\u4e00\u4e2a\u5c0f\u95f9\u949f\u4e00\u6837\uff0c\u6839\u636e\u65f6\u949f\u7684\u8f93\u51fa\u4fe1\u53f7\uff0c\u6bcf\u9694\u201c\u4e00\u79d2\u201d\uff0c\u8ba1\u6570\u5355\u5143\u7684\u6570\u503c\u5c31\u589e\u52a0\u4e00\uff0c\u5f53\u8ba1\u6570\u5355\u5143\u6570\u503c\u589e\u52a0\u5230\u201c\u8bbe\u5b9a\u7684\u95f9\u949f\u63d0\u9192\u65f6\u95f4\u201d\u65f6\uff0c\u8ba1\u6570\u5355\u5143\u5c31\u4f1a\u5411\u4e2d\u65ad\u7cfb\u7edf\u53d1\u51fa\u4e2d\u65ad\u7533\u8bf7\uff0c\u4ea7\u751f\u201c\u54cd\u94c3\u63d0\u9192\u201d\uff0c\u4f7f\u7a0b\u5e8f\u8df3\u8f6c\u5230\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d\u6267\u884c\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u5de5\u4f5c\u6a21\u5f0f<\/h3>\n\n\n\n
STC89C52\u7684T0\u548cT1\u5747\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a13\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668
\u6a21\u5f0f1\uff1a16\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a8\u4f4d\u81ea\u52a8\u91cd\u88c5\u6a21\u5f0f
\u6a21\u5f0f3\uff1a\u4e24\u4e2a8\u4f4d\u8ba1\u6570\u5668<\/p>\n\n\n\n
\u5de5\u4f5c\u6a21\u5f0f1\u6846\u56fe<\/p>\n\n\n\nSYSclk\uff1a\u7cfb\u7edf\u65f6\u949f\uff0c\u5373\u6676\u632f\u5468\u671f\uff0c\u672c\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u4e3a12MHz\u3002<\/figcaption><\/figure>\n\n\n\n\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u4e2d\u65ad\u7a0b\u5e8f\u6d41\u7a0b<\/h3>\n\n\n\n<\/figure>\n\n\n\nSTC89C52\u7cfb\u5217\u5355\u7247\u673a\u4e2d\u65ad\u6e90<\/h3>\n\n\n\n
\u4e2d\u65ad\u6e90\u4e2a\u6570\uff1a8\u4e2a\uff08\u5916\u90e8\u4e2d\u65ad0\u3001\u5b9a\u65f6\u56680\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad1\u3001\u5b9a\u65f6\u56681\u4e2d\u65ad\u3001\u4e32\u53e3\u4e2d\u65ad\u3001\u5b9a\u65f6\u56682\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad2\u3001\u5916\u90e8\u4e2d\u65ad3\uff09\u3002
\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\uff1a4\u4e2a\u3002
\u6ce8\u610f\uff1a\u4e2d\u65ad\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u4e2d\u65ad\u8d44\u6e90\uff0c\u4f8b\u5982\u4e2d\u65ad\u6e90\u4e2a\u6570\u4e0d\u540c\u3001\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\u4e0d\u540c\u7b49\u7b49<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u548c\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u6570\u5b57\u7535\u8def\u5143\u4ef6\u6807\u793a\uff1a<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u76f8\u5173\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u5bc4\u5b58\u5668\u662f\u8fde\u63a5\u8f6f\u786c\u4ef6\u7684\u5a92\u4ecb\u3002\u5728\u5355\u7247\u673a\u4e2d\u5bc4\u5b58\u5668\u5c31\u662f\u4e00\u6bb5\u7279\u6b8a\u7684RAM\u5b58\u50a8\u5668\uff0c\u4e00\u65b9\u9762\uff0c\u5bc4\u5b58\u5668\u53ef\u4ee5\u5b58\u50a8\u548c\u8bfb\u53d6\u6570\u636e\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u6bcf\u4e00\u4e2a\u5bc4\u5b58\u5668\u80cc\u540e\u90fd\u8fde\u63a5\u4e86\u4e00\u6839\u5bfc\u7ebf\uff0c\u63a7\u5236\u7740\u7535\u8def\u7684\u8fde\u63a5\u65b9\u5f0f\u3002\u5bc4\u5b58\u5668\u76f8\u5f53\u4e8e\u4e00\u4e2a\u590d\u6742\u673a\u5668\u7684\u201c\u64cd\u4f5c\u6309\u94ae\u201d\u3002<\/p>\n\n\n\n
TCON\uff1aTimer Control, \u5b9a\u65f6\u5668\u63a7\u5236\u3002
TF\uff1aTimer Flag\uff0c\u8ba1\u6570\u5668\u5230\u8fbe\u6700\u9ad8\u503c\u65f6\uff0c\u7531\u786c\u4ef6\u7f6e1\u3002
TR: Timer Run,TR=1,\u8ba1\u7b97\u5668\u5f00\u59cb\u8fd0\u884c\u3002
EA\uff1aEnable All<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nSTP-ISP\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u81ea\u52a8\u751f\u6210\u5b9a\u65f6\u5668\u914d\u7f6e\u4ee3\u7801<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5934\u6587\u4ef6<intrins.h>,_cror_\u5faa\u73af\u53f3\u79fb\uff0c_crol_\u5faa\u73af\u5de6\u79fb\u51fd\u6570<\/p>\n\n\n\n
\/\/\u5b9a\u65f6\u56680\u521d\u59cb\u5316\u53ca\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\n#include <REGX51.H>\n\n\/**\n * @brief \u5b9a\u65f6\u56680\u521d\u59cb\u5316\uff0c1\u6beb\u79d2@12Mhz\n * @param \u65e0\n * @retval \u65e0\n *\/\n\/\/\u53ef\u4ee5\u4f7f\u7528\u8f6f\u4ef6STP-ISP\u8f6f\u4ef6\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u529f\u80fd\u751f\u6210\u914d\u7f6e\u4ee3\u7801\nvoid Timer0_Init()\n{\n \tTMOD &= 0xF0;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x01;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTF0 = 0;\t\t\/\/\u6e05\u9664TF0\u6807\u5fd7\n\tTR0 = 1;\t\t\/\/\u5b9a\u65f6\u56680\u5f00\u59cb\u8ba1\n ET0=1;\n EA=1;\n PT0=0;\n}\n\n\/\/Timer0\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\uff0c\n\/\/void Timer0_Routine() interrupt 1\n\/\/{\n\/\/ static unsigned int T0Count;\n\/\/ TL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/ T0Count++;\n\/\/ if(T0Count>=1000)\n\/\/ {\n\/\/ T0Count=0;\n\/\/ P2_0=~P2_0;\n\/\/ }\n\/\/}<\/code><\/pre>\n\n\n\n\u4e32\u53e3\u901a\u4fe1<\/h2>\n\n\n\n
\u4e32\u53e3\u662f\u4e00\u79cd\u5e94\u7528\u5341\u5206\u5e7f\u6cdb\u7684\u901a\u8baf\u63a5\u53e3\uff0c\u4e32\u53e3\u6210\u672c\u4f4e\u3001\u5bb9\u6613\u4f7f\u7528\u3001\u901a\u4fe1\u7ebf\u8def\u7b80\u5355\uff0c\u53ef\u5b9e\u73b0\u4e24\u4e2a\u8bbe\u5907\u7684\u4e92\u76f8\u901a\u4fe1\u3002
\u5355\u7247\u673a\u7684\u4e32\u53e3\u53ef\u4ee5\u4f7f\u5355\u7247\u673a\u4e0e\u5355\u7247\u673a\u3001\u5355\u7247\u673a\u4e0e\u7535\u8111\u3001\u5355\u7247\u673a\u4e0e\u5404\u5f0f\u5404\u6837\u7684\u6a21\u5757\u4e92\u76f8\u901a\u4fe1\uff0c\u6781\u5927\u7684\u6269\u5c55\u4e86\u5355\u7247\u673a\u7684\u5e94\u7528\u8303\u56f4\uff0c\u589e\u5f3a\u4e86\u5355\u7247\u673a\u7cfb\u7edf\u7684\u786c\u4ef6\u5b9e\u529b\u3002
51\u5355\u7247\u673a\u5185\u90e8\u81ea\u5e26UART\uff08Universal Asynchronous Receiver Transmitter\uff0c\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff09\uff0c\u53ef\u5b9e\u73b0\u5355\u7247\u673a\u7684\u4e32\u53e3\u901a\u4fe1\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u53e3\u53ca\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u786c\u4ef6\u7535\u8def<\/h3>\n\n\n\n
\u7b80\u5355\u53cc\u5411\u4e32\u53e3\u901a\u4fe1\u6709\u4e24\u6839\u901a\u4fe1\u7ebf\uff08\u53d1\u9001\u7aefTXD\u548c\u63a5\u6536\u7aefRXD\uff09\u3002TXD: transmit exchange data\u3002TXD\u4e0eRXD\u8981\u4ea4\u53c9\u8fde\u63a5\u3002\u5f53\u53ea\u9700\u5355\u5411\u7684\u6570\u636e\u4f20\u8f93\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e00\u6839\u901a\u4fe1\u7ebf\u3002\u5f53\u7535\u5e73\u6807\u51c6\u4e0d\u4e00\u81f4\u65f6\uff0c\u9700\u8981\u52a0\u7535\u5e73\u8f6c\u6362\u82af\u7247\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u7535\u5e73\u6807\u51c6<\/h3>\n\n\n\n
\u7535\u5e73\u6807\u51c6\u662f\u6570\u636e1\u548c\u6570\u636e0\u7684\u8868\u8fbe\u65b9\u5f0f\uff0c\u662f\u4f20\u8f93\u7ebf\u7f06\u4e2d\u4eba\u4e3a\u89c4\u5b9a\u7684\u7535\u538b\u4e0e\u6570\u636e\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u4e32\u53e3\u5e38\u7528\u7684\u7535\u5e73\u6807\u51c6\u6709\u5982\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n
TTL\u7535\u5e73\uff1a+5V\u8868\u793a1\uff0c0V\u8868\u793a0\u3002 TTL\uff1atransistor transistor logic\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS232\u7535\u5e73\uff1a-3~-15V\u8868\u793a1\uff0c+3~+15V\u8868\u793a0\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS485\u7535\u5e73\uff1a\u4e24\u7ebf\u538b\u5dee+2~+6V\u8868\u793a1\uff0c-2~-6V\u8868\u793a0\uff08\u5dee\u5206\u4fe1\u53f7\uff1acan\u3001usb\u90fd\u662f\u5dee\u5206\u4fe1\u53f7\uff09\u53ef\u4f20\u8f93\u6700\u59271000\u7c73\u8ddd\u79bb\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u901a\u4fe1\u63a5\u53e3\u6bd4\u8f83<\/h3>\n\n\n\n\u6b64\u5916\u8fd8\u6709CAN\u3001USB\u7b49\u3002<\/figcaption><\/figure>\n\n\n\n\u5168\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u5728\u540c\u4e00\u65f6\u523b\u4e92\u76f8\u4f20\u8f93\u6570\u636e
\u534a\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u4e92\u76f8\u4f20\u8f93\u6570\u636e\uff0c\u4f46\u5fc5\u987b\u5206\u65f6\u590d\u7528\u4e00\u6839\u6570\u636e\u7ebf
\u5355\u5de5\uff1a\u901a\u4fe1\u53ea\u80fd\u6709\u4e00\u65b9\u53d1\u9001\u5230\u53e6\u4e00\u65b9\uff0c\u4e0d\u80fd\u53cd\u5411\u4f20\u8f93<\/p>\n\n\n\n
\u5f02\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u5404\u81ea\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387
\u540c\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u9760\u4e00\u6839\u65f6\u949f\u7ebf\u6765\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387<\/p>\n\n\n\n
\u603b\u7ebf\uff1a\u8fde\u63a5\u5404\u4e2a\u8bbe\u5907\u7684\u6570\u636e\u4f20\u8f93\u7ebf\u8def\uff08\u7c7b\u4f3c\u4e8e\u4e00\u6761\u9a6c\u8def\uff0c\u628a\u8def\u8fb9\u5404\u4f4f\u6237\u8fde\u63a5\u8d77\u6765\uff0c\u4f7f\u4f4f\u6237\u53ef\u4ee5\u76f8\u4e92\u4ea4\u6d41\uff09<\/p>\n\n\n\n
51\u5355\u7247\u673a\u7684UART<\/h3>\n\n\n\n
STC89C52\u67091\u4e2aUART<\/p>\n\n\n\n
STC89C52\u7684UART\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6a21\u5f0f0\uff1a\u540c\u6b65\u79fb\u4f4d\u5bc4\u5b58\u5668
\u6a21\u5f0f1\uff1a8\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a
\u6a21\u5f0f3\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8<\/p>\n\n\n\n
\u4e32\u53e3\u53c2\u6570\u53ca\u65f6\u5e8f\u56fe<\/h3>\n\n\n\n
\u6ce2\u7279\u7387\uff1a\u4e32\u53e3\u901a\u4fe1\u7684\u901f\u7387\uff08\u53d1\u9001\u548c\u63a5\u6536\u5404\u6570\u636e\u4f4d\u7684\u95f4\u9694\u65f6\u95f4\uff09\u3002\u6bd4\u7279\u7387\uff1a
\u68c0\u9a8c\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u9a8c\u8bc1
\u505c\u6b62\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u5e27\u95f4\u9694<\/p>\n\n\n\n8\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n9\u4f4d\u6570\u636e\u683c\u5f0f<\/figcaption><\/figure>\n\n\n\n\u4e32\u53e3\u6a21\u5f0f\u56fe<\/h3>\n\n\n\nSBUF\uff1a\u4e32\u53e3\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u4e0a\u662f\u4e24\u4e2a\u72ec\u7acb\u7684\u5bc4\u5b58\u5668\uff0c\u4f46\u5360\u7528\u76f8\u540c\u7684\u5730\u5740\u3002\u5199\u64cd\u4f5c\u65f6\uff0c\u5199\u5165\u7684\u662f\u53d1\u9001\u5bc4\u5b58\u5668\uff0c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u8bfb\u51fa\u7684\u662f\u63a5\u6536\u5bc4\u5b58\u5668\u3002<\/figcaption><\/figure>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/\u5355\u7247\u673aUART.c\u4ee3\u780120221130\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x40;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n<\/code><\/pre>\n\n\n\n\/\/\u5355\u7247\u673a1\u79d2\u5411\u7535\u8111\u53d1\u9001\u4e00\u4e2a\u6570\u636e20221130\n#include <REGX52.H>\n#include \"Delay.h\"\n#include \"UART.h\"\n\nunsigned char Sec;\n\nvoid main()\n{\n UART_Init();\n \n\twhile(1)\n\t{\n\t\tUART_SendByte(Sec);\n Sec++;\n Delayxms(1000);\n\t}\n}\n<\/code><\/pre>\n\n\n\n\/\/\u4e32\u53e3\u63a5\u6536\u6570\u636e\u4ee3\u7801\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x50;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n EA=1; \/\/\u542f\u52a8\u4e2d\u65ad\u529f\u80fd\n ES=1; \/\/\u5168\u80fd\u4e32\u4e32\u53e3\u4e2d\u65ad\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n\n\/\n\n\/\/\u4e32\u53e3\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6a21\u677f\n\/\/void UART_Routine() interrupt 4\n\/\/{\n\/\/ if(RI==1)\/\/\u63a5\u6536\u4e2d\u65ad\n\/\/ {\n\n\/\/ RI=0;\n\/\/ }\n\/\/ \n\/\/}<\/code><\/pre>\n\n\n\n\u6ce2\u7279\u7387\u8ba1\u7b97\uff1a<\/h3>\n\n\n\n
TL1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c
TH1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c<\/p>\n\n\n\n
0xF3\u4e3a234\uff0c\u81f3256\u670913\u4e2a\u6570\u3002\u572812T\u6a21\u5f0f\u4e0b\uff0c\u65f6\u949f\u6bcf1um\u8ba1\u4e00\u6b21\u6570\uff0c13\u5fae\u79d2\u6ea2\u51fa\u4e00\u6b21\u30021\/13us = 0.07692 Mhz\u3002 76920\/16=4807.69Hz 7.69\/4800=0.16\u8bef\u5dee\u3002<\/p>\n\n\n\n
\u6570\u636e\u663e\u793a\u6a21\u5f0f<\/h3>\n\n\n\n
HEX\u6a21\u5f0f\/\u5341\u516d\u8fdb\u5236\u6a21\u5f0f\/\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7684\u5f62\u5f0f\u663e\u793a\u3002
\u6587\u672c\u6a21\u5f0f\/\u5b57\u7b26\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7f16\u7801\u540e\u7684\u5f62\u5f0f\u663e\u793a\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f<\/h2>\n\n\n\n
LED\u70b9\u9635\u5c4f\u7531\u82e5\u5e72\u4e2a\u72ec\u7acb\u7684LED\u7ec4\u6210\uff0cLED\u4ee5\u77e9\u9635\u7684\u5f62\u5f0f\u6392\u5217\uff0c\u4ee5\u706f\u73e0\u4eae\u706d\u6765\u663e\u793a\u6587\u5b57\u3001\u56fe\u7247\u3001\u89c6\u9891\u7b49\u3002LED\u70b9\u9635\u5c4f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u516c\u5171\u573a\u5408\uff0c\u5982\u6c7d\u8f66\u62a5\u7ad9\u5668\u3001\u5e7f\u544a\u5c4f\u4ee5\u53ca\u516c\u544a\u724c\u7b49\u3002<\/p>\n\n\n\n
LED\u70b9\u9635\u5c4f\u5206\u7c7b
\u6309\u989c\u8272\uff1a\u5355\u8272\u3001\u53cc\u8272\u3001\u5168\u5f69
\u6309\u50cf\u7d20\uff1a8*8\u300116*16\u7b49\uff08\u5927\u89c4\u6a21\u7684LED\u70b9\u9635\u901a\u5e38\u7531\u5f88\u591a\u4e2a\u5c0f\u70b9\u9635\u62fc\u63a5\u800c\u6210\uff09\u3002<\/p>\n\n\n\n
\u663e\u793a\u539f\u7406<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nLED\u70b9\u9635\u5c4f\u7684\u7ed3\u6784\u7c7b\u4f3c\u4e8e\u6570\u7801\u7ba1\uff0c\u53ea\u4e0d\u8fc7\u662f\u6570\u7801\u7ba1\u628a\u6bcf\u4e00\u5217\u7684\u50cf\u7d20\u4ee5\u201c8\u201d\u5b57\u578b\u6392\u5217\u800c\u5df2\u3002
LED\u70b9\u9635\u5c4f\u4e0e\u6570\u7801\u7ba1\u4e00\u6837\uff0c\u6709\u5171\u9634\u548c\u5171\u9633\u4e24\u79cd\u63a5\u6cd5\uff0c\u4e0d\u540c\u7684\u63a5\u6cd5\u5bf9\u5e94\u7684\u7535\u8def\u7ed3\u6784\u4e0d\u540c\u3002
LED\u70b9\u9635\u5c4f\u9700\u8981\u8fdb\u884c\u9010\u884c\u6216\u9010\u5217\u626b\u63cf\uff0c\u624d\u80fd\u4f7f\u6240\u6709LED\u540c\u65f6\u663e\u793a\u3002<\/p>\n\n\n\n
74HC595<\/h3>\n\n\n\n
74HC595\u662f\u4e32\u884c\u8f93\u5165\u5e76\u884c\u8f93\u51fa\u7684\u79fb\u4f4d\u5bc4\u5b58\u5668\uff0c\u53ef\u75283\u6839\u7ebf\u8f93\u5165\u4e32\u884c\u6570\u636e\uff0c8\u6839\u7ebf\u8f93\u51fa\u5e76\u884c\u6570\u636e\uff0c\u591a\u7247\u7ea7\u8054\u540e\uff0c\u53ef\u8f93\u51fa16\u4f4d\u300124\u4f4d\u300132\u4f4d\u7b49\uff0c\u5e38\u7528\u4e8eIO\u53e3\u6269\u5c55\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nOE\uff1aoutput enable,\u4f4e\u7535\u5e73\u6709\u6548\u3002
RCLK\uff1aregister clock, \u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u9501\u5b58\u3002
SRCLR: serial clear, \u4e32\u884c\u6e05\u96f6\uff0c\u4f4e\u7535\u5e73\u6709\u6548\u3002
SRCLK\uff1a\u4e32\u884c\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u79fb\u4f4d\u3002
SER\uff1a\u4e32\u884c\u6570\u636e
QH’: \u591a\u7247\u7ea7\u8054\u3002<\/p>\n\n\n\n
C51\u7684sfr\u3001sbit<\/h3>\n\n\n\n
\u2022sfr\uff08special function register\uff09\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asfr P0 = 0x80;<\/p>\n\n\n\n
\u58f0\u660eP0\u53e3\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u5730\u5740\u4e3a0x80<\/p>\n\n\n\n
\u2022sbit\uff08special bit\uff09\uff1a\u7279\u6b8a\u4f4d\u58f0\u660e<\/p>\n\n\n\n
\u4f8b\uff1asbit P0_1 = 0x81; \u6216 sbit P0_1 = P0^1;<\/p>\n\n\n\n
\u58f0\u660eP0\u5bc4\u5b58\u5668\u7684\u7b2c1\u4f4d<\/p>\n\n\n\n
\u2022\u53ef\u4f4d\u5bfb\u5740\/\u4e0d\u53ef\u4f4d\u5bfb\u5740\uff1a\u5728\u5355\u7247\u673a\u7cfb\u7edf\u4e2d\uff0c\u64cd\u4f5c\u4efb\u610f\u5bc4\u5b58\u5668\u6216\u8005\u67d0\u4e00\u4f4d\u7684\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u7ed9\u51fa\u5176\u7269\u7406\u5730\u5740\uff0c\u53c8\u56e0\u4e3a\u4e00\u4e2a\u5bc4\u5b58\u5668\u91cc\u67098\u4f4d\uff0c\u6240\u4ee5\u4f4d\u7684\u6570\u91cf\u662f\u5bc4\u5b58\u5668\u6570\u91cf\u76848\u500d\uff0c\u5355\u7247\u673a\u65e0\u6cd5\u5bf9\u6240\u6709\u4f4d\u8fdb\u884c\u7f16\u7801\uff0c\u6545\u6bcf8\u4e2a\u5bc4\u5b58\u5668\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u662f\u53ef\u4ee5\u4f4d\u5bfb\u5740\u7684\u3002\u5bf9\u4e0d\u53ef\u4f4d\u5bfb\u5740\u7684\u5bc4\u5b58\u5668\uff0c\u82e5\u8981\u53ea\u64cd\u4f5c\u5176\u4e2d\u4e00\u4f4d\u800c\u4e0d\u5f71\u54cd\u5176\u5b83\u4f4d\u65f6\uff0c\u53ef\u7528\u201c&=\u201d\u3001\u201c|=\u201d\u3001\u201c^=\u201d\u7684\u65b9\u6cd5\u8fdb\u884c\u4f4d\u64cd\u4f5c<\/p>\n\n\n\n
DS1302\u4ecb\u7ecd<\/h2>\n\n\n\n
DS1302\u662f\u7531\u7f8e\u56fdDALLAS\u516c\u53f8\u63a8\u51fa\u7684\u5177\u6709\u6d93\u7ec6\u7535\u6d41\u5145\u7535\u80fd\u529b\u7684\u4f4e\u529f\u8017\u5b9e\u65f6\u65f6\u949f\u82af\u7247\u3002\u5b83\u53ef\u4ee5\u5bf9\u5e74\u3001\u6708\u3001\u65e5\u3001\u5468\u3001\u65f6\u3001\u5206\u3001\u79d2\u8fdb\u884c\u8ba1\u65f6\uff0c\u4e14\u5177\u6709\u95f0\u5e74\u8865\u507f\u7b49\u591a\u79cd\u529f\u80fd\u3002
RTC(Real Time Clock)\uff1a\u5b9e\u65f6\u65f6\u949f\uff0c\u662f\u4e00\u79cd\u96c6\u6210\u7535\u8def\uff0c\u901a\u5e38\u79f0\u4e3a\u65f6\u949f\u82af\u7247\u3002
\u5355\u7247\u673a\u672c\u8eab\u65f6\u949f\u4e0d\u7cbe\u786e\u3001\u6d6a\u8d39CPU\u65f6\u95f4\u3001\u6389\u7535\u4e22\u5931\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nDS3231, \u6bd4DS1302\u7cbe\u5ea6\u9ad8\uff0c\u5185\u90e8\u81ea\u7cbe\u632f\u3002DS12C887.<\/p>\n\n\n\n
\u5f15\u811a\u5b9a\u4e49\u548c\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5bc4\u5b58\u5668\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u65f6\u5e8f\u5b9a\u4e49<\/h3>\n\n\n\n<\/figure>\n\n\n\nBCD\u7801<\/h3>\n\n\n\n
BCD\u7801\uff08Binary Coded Decimal\u200e\uff09\uff0c\u75284\u4f4d\u4e8c\u8fdb\u5236\u6570\u6765\u8868\u793a1\u4f4d\u5341\u8fdb\u5236\u6570<\/p>\n\n\n\n
\u4f8b\uff1a0001 0011\u8868\u793a13\uff0c1000 0101\u8868\u793a85\uff0c0001 1010\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
\u5728\u5341\u516d\u8fdb\u5236\u4e2d\u7684\u4f53\u73b0\uff1a0x13\u8868\u793a13\uff0c0x85\u8868\u793a85\uff0c0x1A\u4e0d\u5408\u6cd5<\/p>\n\n\n\n
BCD\u7801\u8f6c\u5341\u8fdb\u5236\uff1aDEC=BCD\/16*10+BCD%16; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\u5341\u8fdb\u5236\u8f6cBCD\u7801\uff1aBCD=DEC\/10*16+DEC%10; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n
\/\/20221202 DS1302\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\nsbit DS1302_SCLK=P3^6;\nsbit DS1302_IO=P3^4;\nsbit DS1302_CE=P3^5;\n\n#define DS1302_SECOND 0x80\n#define DS1302_MINUTE 0x82\n#define DS1302_HOUR 0x84\n#define DS1302_DATE 0x86\n#define DS1302_MONTH 0x88\n#define DS1302_DAY 0x8A\n#define DS1302_YEAR 0x8C\n#define DS1302_WP 0x8E\n\nunsigned char DS1302_Time[]={22,12,2,0,59,55,4}; \/\/\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u661f\u671f\n\nvoid DS1302_Init(void)\n{\n DS1302_CE=0;\n DS1302_SCLK=0;\n}\n\nvoid DS1302_WriteByte(unsigned char Command,Data)\n{\n unsigned char i;\n DS1302_CE=1;\n \n\n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Data&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n DS1302_CE=0;\n}\n\nunsigned char DS1302_ReadByte(unsigned char Command)\n{\n unsigned char i,Data=0x00;\n Command |= 0x01;\n DS1302_CE=1;\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=0;\n DS1302_SCLK=1;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n if(DS1302_IO){Data|=(0x01<<i);}\n }\n DS1302_CE=0;\n DS1302_IO=0;\n return Data; \n}\n\nvoid DS1302_SetTime(void)\n{\n DS1302_WriteByte(DS1302_WP,0x00);\/\/\u5173\u95ed\u5199\u4fdd\u62a4\n DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]\/10*16+DS1302_Time[0]%10);\n DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]\/10*16+DS1302_Time[1]%10);\n DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]\/10*16+DS1302_Time[2]%10);\n DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]\/10*16+DS1302_Time[3]%10);\n DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]\/10*16+DS1302_Time[4]%10);\n DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]\/10*16+DS1302_Time[5]%10);\n DS1302_WriteByte(DS1302_DAY,DS1302_Time[6]\/10*16+DS1302_Time[6]%10);\n DS1302_WriteByte(DS1302_WP,0x00); \/\/\u6253\u5f00\u5199\u4fdd\u62a4\n}\n\nvoid DS1302_ReadTime(void)\n{\n unsigned char Temp;\n Temp=DS1302_ReadByte(DS1302_YEAR);\n DS1302_Time[0]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MONTH);\n DS1302_Time[1]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DATE);\n DS1302_Time[2]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_HOUR);\n DS1302_Time[3]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MINUTE);\n DS1302_Time[4]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_SECOND);\n DS1302_Time[5]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DAY);\n DS1302_Time[6]=Temp\/16*10+Temp%16;\n}<\/code><\/pre>\n\n\n\n\/\/main.c LCD1602\u663e\u793a\u65f6\u949f\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"DS1302.h\"\n#include \"Delay.h\"\n\nvoid main()\n{\n LCD_Init();\n DS1302_Init();\n \n LCD_ShowString(1,1,\" - -\");\n LCD_ShowString(2,1,\" : :\");\n \n DS1302_SetTime();\n\n\twhile(1)\n\t{\n\t DS1302_ReadTime();\n LCD_ShowNum(1,1,DS1302_Time[0],2);\n LCD_ShowNum(1,4,DS1302_Time[1],2);\n LCD_ShowNum(1,7,DS1302_Time[2],2);\n LCD_ShowNum(2,1,DS1302_Time[3],2);\n LCD_ShowNum(2,4,DS1302_Time[4],2);\n LCD_ShowNum(2,7,DS1302_Time[5],2);\n\t}\n}\n<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u8702\u9e23\u5668<\/h2>\n\n\n\n
\u8702\u9e23\u5668\u662f\u4e00\u79cd\u5c06\u7535\u4fe1\u53f7\u8f6c\u6362\u4e3a\u58f0\u97f3\u4fe1\u53f7\u7684\u5668\u4ef6\uff0c\u5e38\u7528\u6765\u4ea7\u751f\u8bbe\u5907\u7684\u6309\u952e\u97f3\u3001\u62a5\u8b66\u97f3\u7b49\u63d0\u793a\u4fe1\u53f7\u3002
\u8702\u9e23\u5668\u6309\u9a71\u52a8\u65b9\u5f0f\u53ef\u5206\u4e3a\u6709\u6e90\u8702\u9e23\u5668\u548c\u65e0\u6e90\u8702\u9e23\u5668\u3002
\u6709\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u81ea\u5e26\u632f\u8361\u6e90\uff0c\u5c06\u6b63\u8d1f\u6781\u63a5\u4e0a\u76f4\u6d41\u7535\u538b\u5373\u53ef\u6301\u7eed\u53d1\u58f0\uff0c\u9891\u7387\u56fa\u5b9a\u3002
\u65e0\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u4e0d\u5e26\u632f\u8361\u6e90\uff0c\u9700\u8981\u63a7\u5236\u5668\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u624d\u53ef\u53d1\u58f0\uff0c\u8c03\u6574\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u7684\u9891\u7387\uff0c\u53ef\u53d1\u51fa\u4e0d\u540c\u9891\u7387\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u9a71\u52a8\u7535\u8def<\/h3>\n\n\n\n
\u4e09\u6781\u7ba1\u9a71\u52a8<\/p>\n\n\n\n<\/figure>\n\n\n\n\u96c6\u6210\u7535\u8def\u9a71\u52a8<\/p>\n\n\n\n<\/figure>\n\n\n\nULN2003\u82af\u7247<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u4ecb\u7ecd<\/h2>\n\n\n\n<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u7b80\u5316\u6a21\u578b<\/h3>\n\n\n\nPROM\u4e2d\u84dd\u8272\u4e8c\u7ea7\u7ba1\u5bb9\u6613\u88ab\u51fb\u7a7f\u3002\u4e00\u65e6\u51fb\u7a7f\uff0c\u5c31\u4e0d\u80fd\u66f4\u6539\u4e86\u3002\u6240\u4ee5\u79f0\u4e3a\u70e7\u5f55\u7a0b\u5e8f\u3002<\/figcaption><\/figure>\n\n\n\nAT24C02\u4ecb\u7ecd<\/h2>\n\n\n\n
AT24C02\u662f\u4e00\u79cd\u53ef\u4ee5\u5b9e\u73b0\u6389\u7535\u4e0d\u4e22\u5931\u7684\u5b58\u50a8\u5668\uff0c\u53ef\u7528\u4e8e\u4fdd\u5b58\u5355\u7247\u673a\u8fd0\u884c\u65f6\u60f3\u8981\u6c38\u4e45\u4fdd\u5b58\u7684\u6570\u636e\u4fe1\u606f\u3002
\u5b58\u50a8\u4ecb\u8d28\uff1aE2PROM\u3002
\u901a\u8baf\u63a5\u53e3\uff1aI2C\u603b\u7ebf\u3002
\u5bb9\u91cf\uff1a256\u5b57\u8282<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5f15\u811a<\/strong><\/td>\u529f\u80fd<\/strong><\/td><\/tr>VCC\u3001GND<\/td> \u7535\u6e90\uff081.8V~5.5V \uff09<\/td><\/tr> WP<\/td> \u5199\u4fdd\u62a4\uff08\u9ad8\u7535\u5e73\u6709\u6548\uff09<\/td><\/tr> SCL\u3001SDA<\/td> I2C\u63a5\u53e3<\/td><\/tr> A0\u3001A1\u3001A2<\/td> I2C\u5730\u5740<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\nX DEC\uff1aX\u8bd1\u7801\u5668<\/figcaption><\/figure>\n\n\n\nI2C\u603b\u7ebf\u4ecb\u7ecd<\/h2>\n\n\n\n
I2C\u603b\u7ebf(Inter IC BUS\uff09\u662f\u7531Philips\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e24\u6839\u901a\u4fe1\u7ebf\ufe30SCL (Serial Clock) \u3001SDA(Serial Data)\u3002
\u540c\u6b65\u3001\u534a\u53cc\u5de5\uff0c\u5e26\u6570\u636e\u5e94\u7b54\u3002
\u901a\u7528\u7684I2C\u603b\u7ebf\uff0c\u53ef\u4ee5\u4f7f\u5404\u79cd\u8bbe\u5907\u7684\u901a\u4fe1\u6807\u51c6\u7edf\u4e00\uff0c\u5bf9\u4e8e\u5382\u5bb6\u6765\u8bf4\uff0c\u4f7f\u7528\u6210\u719f\u7684\u65b9\u6848\u53ef\u4ee5\u7f29\u77ed\u82af\u7247\u8bbe\u8ba1\u5468\u671f
\u63d0\u9ad8\u7a33\u5b9a\u6027\uff0c\u5bf9\u4e8e\u5e94\u7528\u8005\u6765\u8bf4\uff0c\u4f7f\u7528\u901a\u7528\u7684\u901a\u4fe1\u534f\u8bae\u53ef\u4ee5\u907f\u514d\u5b66\u4e60\u5404\u79cd\u5404\u6837\u7684\u81ea\u5b9a\u4e49\u534f\u8bae\uff0c\u964d\u4f4e\u4e86\u5b66\u4e60\u548c\u5e94\u7528\u7684\u96be\u5ea6\u3002\u4f7f\u7528\u6709\u4e13\u5229\u8d39\u3002<\/p>\n\n\n\n1.0.92\u5bf8OLED\u5c4f\u5e55; 2.DS3631\u65f6\u949f\u82af\u7247; 3.MTU6050\u9640\u87ba\u4eea\u82af\u7247\u3002<\/figcaption><\/figure>\n\n\n\nI2C\u7535\u8def\u89c4\u8303<\/h2>\n\n\n\n
\u6240\u6709I2C\u8bbe\u5907\u7684SCL\u8fde\u5728\u4e00\u8d77\uff0cSDA\u8fde\u5728\u4e00\u8d77\u3002
\u8bbe\u5907\u7684SCL\u548cSDA\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
SCL\u548cSDA\u5404\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7KQ\u5de6\u53f3\u3002
\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u7684\u5171\u540c\u4f5c\u7528\u5b9e\u73b0\u4e86\u201c\u7ebf\u4e0e”\u7684\u529f\u80fd\uff0c\u6b64\u8bbe\u8ba1\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u591a\u673a\u901a\u4fe1\u4e92\u76f8\u5e72\u6270\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nI2C\u65f6\u5e8f\u7ed3\u6784<\/h2>\n\n\n\n\u8d77\u59cb\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u9ad8\u7535\u5e73\u5207\u6362\u5230\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n
\u7ec8\u6b62\u6761\u4ef6<\/h3>\n\n\n\n
SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u4f4e\u7535\u5e73\u5207\u6362\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
SCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4e3b\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4ece\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u3002\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff1aSCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4ece\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4e3b\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n\u7d2b\u8272\u4ee3\u8868\u4ece\u673a\u63a7\u5236\u603b\u7ebf\u3002<\/figcaption><\/figure>\n\n\n\n\u53d1\u9001\u5e94\u7b54 (Send Ack)<\/h3>\n\n\n\n
\u5728\u63a5\u6536\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u53d1\u9001\u4e00\u4f4d\u6570\u636e\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\u3002<\/p>\n\n\n\n
\u63a5\u6536\u5e94\u7b54\uff08Receive Ack\uff09<\/h3>\n\n\n\n
\u5728\u53d1\u9001\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u63a5\u6536\u4e00\u4f4d\u6570\u636e\uff0c\u5224\u65ad\u4ece\u673a\u662f\u5426\u5e94\u7b54\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nI2C\u6570\u636e\u5e27<\/h2>\n\n\n\n\u53d1\u9001\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n\u524d7\u4f4d\u662f\u5730\u5740\uff0c\u5176\u4e2d\u524d4\u4f4d\u662f\u56fa\u5b9a\u7684\uff0c24C02\u56fa\u5b9a\u662f1010\uff0c\u662f\u82af\u7247\u516c\u53f8\u5ba1\u8bf7\u5230\u7684\u5730\u5740\u3002A3A2A1\u662f\u81ea\u5df1\u901a\u8fc7\u7535\u8def\u914d\u7f6e\u7684\u3002<\/figcaption><\/figure>\n\n\n\n\u63a5\u6536\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5148\u53d1\u9001\u518d\u63a5\u6536\u6570\u636e\u5e27\uff08\u590d\u5408\u683c\u5f0f\uff09<\/h3>\n\n\n\n<\/figure>\n\n\n\nAT24C02\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u5b57\u8282\u5199\uff1a\u5728WORD ADDRESS\u5904\u5199\u5165\u6570\u636eDATA<\/p>\n\n\n\n\u968f\u673a\u8bfb\uff1a\u8bfb\u51fa\u5728WORD ADDRESS\u5904\u7684\u6570\u636eDATA<\/figcaption><\/figure>\n\n\n\n<\/figure>\n\n\n\nAT24C02\u7684\u56fa\u5b9a\u5730\u5740\u4e3a1010\uff0c\u53ef\u914d\u7f6e\u5730\u5740\u672c\u5f00\u53d1\u677f\u4e0a\u4e3a000\uff0c\u6240\u4ee5SLAVE ADDRESS+W \u4e3a0xA0, SLAVE ADDRESS+R \u4e3a0xA1;<\/p>\n\n\n\n
\/\/I2C.c 20221204\n#include <REGX52.H>\n\nsbit I2C_SCL=P2^1;\nsbit I2C_SDA=P2^0;\n\n\n\/**\n * @brief I2C\u5f00\u59cb\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Start(void)\n{\n I2C_SDA=1;\n I2C_SCL=1;\n I2C_SDA=0;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u505c\u6b62\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Stop(void)\n{\n I2C_SDA=0;\n I2C_SCL=1;\n I2C_SDA=1;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte\u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid I2C_SendByte(unsigned char Byte)\n{\n unsigned char i;\n for(i=0;i<8;i++)\n {\n I2C_SDA=Byte&(0x80>>i);\n I2C_SCL=1;\n I2C_SCL=0;\n }\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u5230\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n *\/\nunsigned char I2C_ReceiveByte(void)\n{\n unsigned char i, Byte=0x00;\n \n I2C_SDA=1;\n for(i=0;i<8;i++)\n {\n I2C_SCL=1;\n if(I2C_SDA==1){Byte|=(0x80>>i);}\n I2C_SCL=0;\n }\n\n return Byte;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u5e94\u7b54\n * @param AckBit\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n * @retval \u65e0\n *\/\nvoid I2C_SendAck(unsigned char AckBit) \/\/bit \u662fC51\u7279\u6709\u7684\u6570\u636e\u7c7b\u578b\n{\n I2C_SDA=AckBit;\n I2C_SCL=1;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u5e94\u7b54\u4f4d\n * @param \u65e0\n * @retval AckBit\u63a5\u6536\u5230\u7684\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n *\/\nunsigned char I2C_ReceiveAck(void)\n{\n unsigned char AckBit;\n I2C_SDA=1;\n I2C_SCL=1;\n AckBit=I2C_SDA;\n I2C_SCL=0;\n return AckBit;\n}<\/code><\/pre>\n\n\n\n\/\/AT24C02.c 20221204\n#include <REGX52.H>\n#include \"I2C.h\"\n\n#define AT24C02_ADDRESS 0xA0\n\n\/**\n * @brief AT24C02\u5199\u5165\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u5199\u5165\u5b57\u8282\u7684\u5730\u5740\n * @param Data\u8981\u5199\u5165\u7684\u6570\u636e\n * @retval \u65e0\n *\/\nvoid AT24C02_WriteByte(unsigned char WordAddress,Data)\n{\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_SendByte(Data);\n I2C_ReceiveAck();\n I2C_Stop();\n}\n\n\/**\n * @brief AT24C02\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u8bfb\u51fa\u5b57\u8282\u7684\u5730\u5740\n * @retval \u8bfb\u51fa\u7684\u6570\u636e\n *\/\nunsigned char AT24C02_ReadByte(unsigned char WordAddress)\n{\n unsigned char Data;\n \n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS|0x01);\n I2C_ReceiveAck();\n Data=I2C_ReceiveByte();\n I2C_SendAck(1);\n I2C_Stop();\n \n return Data;\n}\n<\/code><\/pre>\n\n\n\n\/\/I2C AT24C02\u5b58\u5165\u5e76\u8bfb\u51fa\u4e00\u4e2a\u6570\u636e\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"Key.h\"\n#include \"AT24C02.h\"\n#include \"Delay.h\"\n\nunsigned char Data;\n\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Hello\");\n AT24C02_WriteByte(1,66); \/\/\u5730\u5740\u8303\u56f40~255\n Delayxms(5); \/\/\u5199\u5468\u671f\u4e3a5ms\uff0c\u5fc5\u987b\u7b49\u5f85\u4e00\u4e0b\n Data = AT24C02_ReadByte(1);\n \n LCD_ShowNum(2,1,Data,3);\n\twhile(1)\n\t{\n\t\t\n\t}\n}\n<\/code><\/pre>\n\n\n\nDS18B20\u6e29\u5ea6\u4f20\u611f\u5668<\/h2>\n\n\n\n
DS18B20\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u5b57\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5176\u63a7\u5236\u547d\u4ee4\u548c\u6570\u636e\u90fd\u662f\u4ee5\u6570\u5b57\u4fe1\u53f7\u7684\u65b9\u5f0f\u8f93\u5165\u8f93\u51fa\uff0c\u76f8\u6bd4\u8f83\u4e8e\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5177\u6709\u529f\u80fd\u5f3a\u5927\u3001\u786c\u4ef6\u7b80\u5355\u3001\u6613\u6269\u5c55\u3001\u6297\u5e72\u6270\u6027\u5f3a\u7b49\u7279\u70b9\u3002\uff08\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\u5982\u70ed\u654f\u7535\u963b\u3002\uff09
\u6d4b\u6e29\u8303\u56f4\uff1a-55\u00b0C \u5230 +125\u00b0C\u3002
\u901a\u4fe1\u63a5\u53e3\uff1a1-Wire\uff08\u5355\u603b\u7ebf\uff09\u3002
\u5176\u5b83\u7279\u5f81\uff1a\u53ef\u5f62\u6210\u603b\u7ebf\u7ed3\u6784\u3001\u5185\u7f6e\u6e29\u5ea6\u62a5\u8b66\u529f\u80fd\u3001\u53ef\u5bc4\u751f\u4f9b\u7535\uff08\u4e0d\u9700\u8981VCC\u4e5f\u53ef\u901a\u8fc7\u603b\u7ebf\u4f9b\u7535\uff09\u3002\u53ef\u4ee5\u5728\u4e00\u4e2a\u901a\u4fe1\u7ebf\u4e0a\u6302\u591a\u4e2a\u8bbe\u5907\u3002<\/p>\n\n\n\n1.TO92\u5c01\u88c5<\/figcaption><\/figure>\n\n\n\n\u5f15\u811a\u53ca\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\nVDD\uff1a\u7535\u6e90\uff083.0V\u20145.5V\uff09\u3002DQ\uff1a\u5355\u603b\u7ebf\u63a5\u53e3\u3002GND\uff1a\u5730\u3002<\/figcaption><\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n<\/figure>\n\n\n\n64-BIT ROM\uff1a\u4f5c\u4e3a\u5668\u4ef6\u5730\u5740\uff0c\u7528\u4e8e\u603b\u7ebf\u901a\u4fe1\u7684\u5bfb\u5740\u3002
SCRATCHPAD\uff08\u6682\u5b58\u5668\uff09\uff1a\u7528\u4e8e\u603b\u7ebf\u7684\u6570\u636e\u4ea4\u4e92\u3002
EEPROM\uff1a\u7528\u4e8e\u4fdd\u5b58\u6e29\u5ea6\u89e6\u53d1\u9608\u503c\u548c\u914d\u7f6e\u53c2\u6570\u3002<\/p>\n\n\n\n
\u5b58\u50a8\u5668\u7ed3\u6784<\/h3>\n\n\n\n<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u4ecb\u7ecd<\/h3>\n\n\n\n
\u5355\u603b\u7ebf\uff081-Wire BUS\uff09\u662f\u7531Dallas\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002
\u4e00\u6839\u901a\u4fe1\u7ebf\uff1aDQ\u3002
\u5f02\u6b65\u3001\u534a\u53cc\u5de5\u3002
\u5355\u603b\u7ebf\u53ea\u9700\u8981\u4e00\u6839\u901a\u4fe1\u7ebf\u5373\u53ef\u5b9e\u73b0\u6570\u636e\u7684\u53cc\u5411\u4f20\u8f93\uff0c\u5f53\u91c7\u7528\u5bc4\u751f\u4f9b\u7535\u65f6\uff0c\u8fd8\u53ef\u4ee5\u7701\u53bb\u8bbe\u5907\u7684VDD\u7ebf\u8def\uff0c\u6b64\u65f6\uff0c\u4f9b\u7535\u52a0\u901a\u4fe1\u53ea\u9700\u8981DQ\u548cGND\u4e24\u6839\u7ebf\u3002<\/p>\n\n\n\n
\u5355\u603b\u7ebf\u7535\u8def\u89c4\u8303<\/h3>\n\n\n\n
\u8bbe\u5907\u7684DQ\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
DQ\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7K\u03a9\u5de6\u53f3\u3002
\u82e5\u6b64\u603b\u7ebf\u7684\u4ece\u673a\u91c7\u53d6\u5bc4\u751f\u4f9b\u7535\uff0c\u5219\u4e3b\u673a\u8fd8\u5e94\u914d\u4e00\u4e2a\u5f3a\u4e0a\u62c9\u8f93\u51fa\u7535\u8def\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u65f6\u5e8f\u7ed3\u6784<\/h3>\n\n\n\n\u521d\u59cb\u5316<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e\u81f3\u5c11480us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u7b49\u5f8515~60us\u540e\uff0c\u5b58\u5728\u7684\u4ece\u673a\u4f1a\u62c9\u4f4e\u603b\u7ebf60~240us\u4ee5\u54cd\u5e94\u4e3b\u673a\uff0c\u4e4b\u540e\u4ece\u673a\u5c06\u91ca\u653e\u603b\u7ebf\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e60~120us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90010\uff1b\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90011\u3002\u4ece\u673a\u5c06\u5728\u603b\u7ebf\u62c9\u4f4e30us\u540e\uff08\u5178\u578b\u503c\uff09\u8bfb\u53d6\u7535\u5e73\uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4f4d<\/h3>\n\n\n\n
\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u5e76\u5728\u62c9\u4f4e\u540e15us\u5185\u8bfb\u53d6\u603b\u7ebf\u7535\u5e73\uff08\u5c3d\u91cf\u8d34\u8fd115us\u7684\u672b\u5c3e\uff09\uff0c\u8bfb\u53d6\u4e3a\u4f4e\u7535\u5e73\u5219\u4e3a\u63a5\u65360\uff0c\u8bfb\u53d6\u4e3a\u9ad8\u7535\u5e73\u5219\u4e3a\u63a5\u65361 \uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u53d1\u9001\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u8fde\u7eed\u8c03\u75288\u6b21\u63a5\u6536\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n
DS18B20\u64cd\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n
\u521d\u59cb\u5316\uff1a\u4ece\u673a\u590d\u4f4d\uff0c\u4e3b\u673a\u5224\u65ad\u4ece\u673a\u662f\u5426\u54cd\u5e94\u3002
ROM\u64cd\u4f5c\uff1aROM\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002
\u529f\u80fd\u64cd\u4f5c\uff1a\u529f\u80fd\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nDS18B20\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u6e29\u5ea6\u53d8\u6362\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6e29\u5ea6\u8bfb\u53d6\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u8bfb\u6682\u5b58\u5668\u2192\u8fde\u7eed\u7684\u8bfb\u64cd\u4f5c<\/p>\n\n\n\n<\/figure>\n\n\n\n\u6e29\u5ea6\u5b58\u50a8\u683c\u5f0f<\/h3>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/20221206\u5355\u603b\u7ebf\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\n\/\/\u5f15\u811a\u5b9a\u4e49\nsbit OneWire_DQ=P3^7;\n\n\/**\n * @brief \u5355\u603b\u7ebf\u521d\u59cb\u5316\n * @param \u65e0\n * @retval \u4ece\u673a\u54cd\u5e94\u4f4d\uff0c0\u4e3a\u54cd\u5e94\uff0c1\u4e3a\u672a\u54cd\u5e94\n *\/\nunsigned char OneWire_Init(void)\n{\n\tunsigned char i;\n\tunsigned char AckBit;\n\tOneWire_DQ=1;\n\tOneWire_DQ=0;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\tOneWire_DQ=1;\n\ti = 32;while (--i);\t\t\t\/\/Delay 70us\n\tAckBit=OneWire_DQ;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\treturn AckBit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4f4d\n * @param Bit \u8981\u53d1\u9001\u7684\u4f4d\n * @retval \u65e0\n *\/\nvoid OneWire_SendBit(unsigned char Bit)\n{\n\tunsigned char i;\n\tOneWire_DQ=0;\n\ti = 4;while (--i);\t\t\t\/\/Delay 10us\n\tOneWire_DQ=Bit;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\tOneWire_DQ=1;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4f4d\n * @param \u65e0\n * @retval \u8bfb\u53d6\u7684\u4f4d\n *\/\nunsigned char OneWire_ReceiveBit(void)\n{\n\tunsigned char i;\n\tunsigned char Bit;\n\tOneWire_DQ=0;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tOneWire_DQ=1;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tBit=OneWire_DQ;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\treturn Bit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte \u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid OneWire_SendByte(unsigned char Byte)\n{\n\tunsigned char i;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tOneWire_SendBit(Byte&(0x01<<i));\n\t}\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u7684\u4e00\u4e2a\u5b57\u8282\n *\/\nunsigned char OneWire_ReceiveByte(void)\n{\n\tunsigned char i;\n\tunsigned char Byte=0x00;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tif(OneWire_ReceiveBit()){Byte|=(0x01<<i);}\n\t}\n\treturn Byte;\n}\n<\/code><\/pre>\n\n\n\n\/\/20221206 DS18B20\u6e29\u5ea6\u4f20\u611f\u5668\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n#include \"OneWire.h\"\n\n\/\/DS18B20\u6307\u4ee4\n#define DS18B20_SKIP_ROM\t\t\t0xCC\n#define DS18B20_CONVERT_T\t\t\t0x44\n#define DS18B20_READ_SCRATCHPAD \t0xBE\n\n\/**\n * @brief DS18B20\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid DS18B20_ConvertT(void)\n{\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_CONVERT_T);\n}\n\n\/**\n * @brief DS18B20\u8bfb\u53d6\u6e29\u5ea6\n * @param \u65e0\n * @retval \u6e29\u5ea6\u6570\u503c\n *\/\nfloat DS18B20_ReadT(void)\n{\n\tunsigned char TLSB,TMSB;\n\tint Temp;\n\tfloat T;\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_READ_SCRATCHPAD);\n\tTLSB=OneWire_ReceiveByte();\n\tTMSB=OneWire_ReceiveByte();\n\tTemp=(TMSB<<8)|TLSB;\n\tT=Temp\/16.0;\n\treturn T;\n}\n<\/code><\/pre>\n\n\n\nLCD1602<\/h2>\n\n\n\n
LCD1602\uff08Liquid Crystal Display\uff09\u6db2\u6676\u663e\u793a\u5c4f\u662f\u4e00\u79cd\u5b57\u7b26\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u53ef\u4ee5\u663e\u793aASCII\u7801\u7684\u6807\u51c6\u5b57\u7b26\u548c\u5176\u5b83\u7684\u4e00\u4e9b\u5185\u7f6e\u7279\u6b8a\u5b57\u7b26\uff0c\u8fd8\u53ef\u4ee5\u67098\u4e2a\u81ea\u5b9a\u4e49\u5b57\u7b26\u3002
\u5355\u7247\u673a\uff0c\u82f1\u6587Micro Controller Unit\uff0c\u7b80\u79f0MCU<\/p>\n\n\n\n
\u5185\u90e8\u96c6\u6210\u4e86CPU\u3001RAM\u3001ROM\u3001\u5b9a\u65f6\u5668\u3001\u4e2d\u65ad\u7cfb\u7edf\u3001\u901a\u8baf\u63a5\u53e3\u7b49\u4e00\u7cfb\u5217\u7535\u8111\u7684\u5e38\u7528\u786c\u4ef6\u529f\u80fd\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u4efb\u52a1\u662f\u4fe1\u606f\u91c7\u96c6\uff08\u4f9d\u9760\u4f20\u611f\u5668\uff09\u3001\u5904\u7406\uff08\u4f9d\u9760CPU\uff09\u548c\u786c\u4ef6\u8bbe\u5907\uff08\u4f8b\u5982\u7535\u673a\u3001LED\u7b49\uff09\u7684\u63a7\u5236\u3002<\/p>\n\n\n\n
\u5355\u7247\u673a\u8ddf\u8ba1\u7b97\u673a\u76f8\u6bd4\uff0c\u5355\u7247\u673a\u7b97\u662f\u4e00\u4e2a\u8896\u73cd\u7248\u8ba1\u7b97\u673a\uff0c\u4e00\u4e2a\u82af\u7247\u5c31\u80fd\u6784\u6210\u5b8c\u6574\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u3002\u4f46\u5728\u6027\u80fd\u4e0a\uff0c\u4e0e\u8ba1\u7b97\u673a\u76f8\u5dee\u751a\u8fdc\uff0c\u4f46\u5355\u7247\u673a\u6210\u672c\u4f4e\u3001\u4f53\u79ef\u5c0f\u3001\u7ed3\u6784\u7b80\u5355\uff0c\u5728\u751f\u6d3b\u548c\u5de5\u4e1a\u63a7\u5236\u9886\u57df\u5927\u6709\u6240\u7528\u3002<\/p>\n\n\n\n
\u540c\u65f6\uff0c\u5b66\u4e60\u4f7f\u7528\u5355\u7247\u673a\u662f\u4e86\u89e3\u8ba1\u7b97\u673a\u539f\u7406\u4e0e\u7ed3\u6784\u7684\u6700\u4f73\u9009\u62e9<\/p>\n\n\n\n
\u5355\u7247\u673a\u7684\u5e94\u7528\u9886\u57df\uff1a<\/h2>\n\n\n\n
\u5355\u7247\u673a\u7684\u4f7f\u7528\u9886\u57df\u5df2\u5341\u5206\u5e7f\u6cdb\uff0c\u5982\u667a\u80fd\u4eea\u8868\u3001\u5b9e\u65f6\u5de5\u63a7\u3001\u901a\u8baf\u8bbe\u5907\u3001\u5bfc\u822a\u7cfb\u7edf\u3001\u5bb6\u7528\u7535\u5668\u7b49\u3002\u5404\u79cd\u4ea7\u54c1\u4e00\u65e6\u7528\u4e0a\u4e86\u5355\u7247\u673a\uff0c\u5c31\u80fd\u8d77\u5230\u4f7f\u4ea7\u54c1\u5347\u7ea7\u6362\u4ee3\u7684\u529f\u6548\uff0c\u5e38\u5728\u4ea7\u54c1\u540d\u79f0\u524d\u51a0\u4ee5\u5f62\u5bb9\u8bcd\u2014\u2014\u201c\u667a\u80fd\u578b\u201d\uff0c\u5982\u667a\u80fd\u578b\u6d17\u8863\u673a\u7b49\u3002<\/p>\n\n\n\n 51\u5355\u7247\u673a\u662f\u5bf9\u517c\u5bb9\u82f1\u7279\u5c14<\/a>8051\u6307\u4ee4\u7cfb\u7edf<\/a>\u7684\u5355\u7247\u673a<\/a>\u7684\u7edf\u79f0\u3002<\/p>\n\n\n\n \u4e3b\u8981\u54c1\u724c\u53ca\u5176\u4ea7\u54c1<\/p>\n\n\n\n \u6240\u5c5e\u7cfb\u5217\uff1a51\u5355\u7247\u673a\u7cfb\u5217 \u770b\u95e8\u72d7\uff1a\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u7684\u3002<\/p>\n\n\n\n \u5355\u7247\u673a\u4e0a\u65b9\u6709\u4e2a\u7f3a\u53e3\uff0c\u538b\u6746\u671d\u4e0a\u3002<\/p>\n\n\n\n \u00b7<\/p>\n<\/div>\n\n\n\n Keil5\u9009\u62e9CPU\u65f6\uff0c\u9009Atmel,STC\u548cAT\u57fa\u672c\u64cd\u4f5c\u662f\u4e00\u6837\u7684\u3002\u9009\u62e9AT89C51\u6216AT89C52\u90fd\u884c\u3002\u5185\u6838\u90fd\u662f\u4e00\u6837\u7684\u3002\u4e0d\u9700\u8981\u590d\u5236\u542f\u52a8\u6587\u4ef6\uff0c\u56e0\u4e3aKeil\u5df2\u7ecf\u96c6\u6210\u4e86\u3002<\/p>\n\n\n\n \u7528\u6765\u7167\u660e\u3001\u5e7f\u544a\u706f\u3001\u6307\u5f15\u706f\u3001\u5c4f\u5e55\u3002<\/p>\n\n\n\n \u6392\u963b\uff0c\u7b80\u79f0RP\uff0c\uff08Resistance Pack\uff09102\u4ee3\u88681000\u6b27\uff1a10*10\u76842\u6b21\u65b9; 473\u4e3a47*1000=47K\u6b27\u3002\u6709\u65f6\u67094\u4f4d\u6570\u8868\u793a\u59821001\uff0c\u524d\u4e09\u4f4d\u4e3a\u6709\u6548\u6570\u5b57\uff0c\u7b2c4\u4f4d\u4e3a\u500d\u7387\u5373100*10=1000\u6b27\u3002\u7535\u4f4d\u5668\u6807103\u5373\u4ee3\u886810*1000=10K\u6b27\u3002\u9650\u6d41\u7535\u963b\u3002<\/p>\n\n\n\n \u70b9\u4eaeLED\uff0c\u8f6c\u53d8\u4e3a\u63a7\u5236\u76f8\u5e94\u5f15\u811a\u9ad8\u4f4e\u7535\u5e73\u3002 <\/p>\n\n\n\n Keil\u9ed8\u8ba4\u4e0d\u751f\u6210.hex\u6587\u4ef6\uff0c\u9700\u8981\u914d\u7f6e\u3002<\/p>\n\n\n\n \u2022\u8f7b\u89e6\u6309\u952e\uff1a\u76f8\u5f53\u4e8e\u662f\u4e00\u79cd\u7535\u5b50\u5f00\u5173\uff0c\u6309\u4e0b\u65f6\u5f00\u5173\u63a5\u901a\uff0c\u677e\u5f00\u65f6\u5f00\u5173\u65ad\u5f00\uff0c\u5b9e\u73b0\u539f\u7406\u662f\u901a\u8fc7\u8f7b\u89e6\u6309\u952e\u5185\u90e8\u7684\u91d1\u5c5e\u5f39\u7247\u53d7\u529b\u5f39\u52a8\u6765\u5b9e\u73b0\u63a5\u901a\u548c\u65ad\u5f00\u3002<\/p>\n\n\n\n sfr\u5168\u79f0\u4e3a\uff1aspecial function register\uff08\u7ffb\u8bd1\u4e3a\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\uff09\u3002 \u5934\u6587\u4ef6REGX.H \u6709\u4f4d\u58f0\u660e\uff0cREG.H\u6ca1\u6709\u4f4d\u58f0\u660e\u3002<\/p>\n\n\n\n \u5bf9\u4e8e\u673a\u68b0\u5f00\u5173\uff0c\u5f53\u673a\u68b0\u89e6\u70b9\u65ad\u5f00\u3001\u95ed\u5408\u65f6\uff0c\u7531\u4e8e\u673a\u68b0\u89e6\u70b9\u7684\u5f39\u6027\u4f5c\u7528\uff0c\u4e00\u4e2a\u5f00\u5173\u5728\u95ed\u5408\u65f6\u4e0d\u4f1a\u9a6c\u4e0a\u7a33\u5b9a\u5730\u63a5\u901a\uff0c\u5728\u65ad\u5f00\u65f6\u4e5f\u4e0d\u4f1a\u4e00\u4e0b\u5b50\u65ad\u5f00\uff0c\u6240\u4ee5\u5728\u5f00\u5173\u95ed\u5408\u53ca\u65ad\u5f00\u7684\u77ac\u95f4\u4f1a\u4f34\u968f\u4e00\u8fde\u4e32\u7684\u6296\u52a8\u3002<\/p>\n\n\n\n \u6d88\u6296\uff1a\u786c\u4ef6\u6d88\u6296; \u8f6f\u4ef6\u6d88\u6296\u3002<\/p>\n\n\n\n \u68c0\u6d4b\u677e\u624b\uff1a<\/p>\n\n\n\n \u7279\u6b8a\u7684\u5b58\u50a8\u5668\uff0c\u4ee58\u4e2a\u4e3a\u4e00\u7ec4\uff0c\u6bcf\u4e2a\u4f4d\u540e\u9762\u90fd\u8fde\u7740\u4e00\u6839\u7ebf\u901a\u8fc7\u9a71\u52a8\u5668\u63a7\u5236\u76f8\u5e94\u7535\u8def\u3002\u9a71\u52a8\u5668\u4e3a\u4e86\u589e\u5927\u9a71\u52a8\u80fd\u529b\u3002CPU\u76f4\u63a5\u8bfb\u5199\u5bc4\u5b58\u5668\uff0c\u5bc4\u5b58\u5668\u901a\u8fc7\u9a71\u52a8\u5668\u9a71\u52a8IO\u53e3\u3002<\/p>\n\n\n\n \u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73\u7684\u95ee\u9898\u8f6c\u5316\u4e3a\u8bfb\u5199\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n \u2022LED\u6570\u7801\u7ba1\uff1a\u6570\u7801\u7ba1\u662f\u4e00\u79cd\u7b80\u5355\u3001\u5ec9\u4ef7\u7684\u663e\u793a\u5668\uff0c\u662f\u7531\u591a\u4e2a\u53d1\u5149\u4e8c\u6781\u7ba1\u5c01\u88c5\u5728\u4e00\u8d77\u7ec4\u6210\u201c8\u201d\u5b57\u578b\u7684\u5668\u4ef6<\/p>\n\n\n\n \u5171\u9634\u3001\u5171\u9633\u63a5\u6cd5\u3002 \u5176\u4e2dLS\u6216HC\u4ee3\u8868\u7535\u538b\u3002<\/p>\n\n\n\n 74HC245\uff1a\u53cc\u5411\u6570\u636e\u7f13\u51b2\u5668\uff08\u53c8\u79f0\u4e3a\u9501\u5b58\u5668\uff09<\/p>\n\n\n\n OE: output enable\u3002 \u82af\u7247\u4f7f\u80fd \u7535\u5bb9\uff1a\u6807\u7740104\uff0c\u5bb9\u91cf\u4e3a10 0000pF\uff0c nF uF mF F<\/p>\n\n\n\n \u6570\u7801\u7ba1\u6d88\u5f71\uff1a\u4f4d\u9009\u3001\u6bb5\u9009\uff0c\u4e0b\u4e00\u4e2a\u4f4d\u9009\uff0c\u4e0b\u4e00\u4e0b\u6bb5\u9009<\/p>\n\n\n\n \u2022\u5355\u7247\u673a\u76f4\u63a5\u626b\u63cf\uff1a\u786c\u4ef6\u8bbe\u5907\u7b80\u5355\uff0c\u4f46\u4f1a\u8017\u8d39\u5927\u91cf\u7684\u5355\u7247\u673aCPU\u65f6\u95f4<\/p>\n\n\n\n \u2022\u4e13\u7528\u9a71\u52a8\u82af\u7247\uff1a\u5185\u90e8\u81ea\u5e26\u663e\u5b58\u3001\u626b\u63cf\u7535\u8def\uff0c\u5355\u7247\u673a\u53ea\u9700\u544a\u8bc9\u5b83\u663e\u793a\u4ec0\u4e48\u5373\u53ef<\/p>\n\n\n\n \u4f7f\u7528LCD1602\u6db2\u6676\u5c4f\u4f5c\u4e3a\u8c03\u8bd5\u7a97\u53e3\uff0c\u63d0\u4f9b\u7c7b\u4f3cprintf\u51fd\u6570\u7684\u529f\u80fd\uff0c\u53ef\u5b9e\u65f6\u89c2\u5bdf\u5355\u7247\u673a\u5185\u90e8\u6570\u636e\u7684\u53d8\u6362\u60c5\u51b5\uff0c\u4fbf\u4e8e\u8c03\u8bd5\u548c\u6f14\u793a\u3002<\/p>\n\n\n\n \u672c\u89c6\u9891\u63d0\u4f9b\u7684LCD1602\u4ee3\u7801\u5c5e\u4e8e\u6a21\u5757\u5316\u7684\u4ee3\u7801\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u8981\u77e5\u9053\u6240\u63d0\u4f9b\u51fd\u6570\u7684\u4f5c\u7528\u548c\u4f7f\u7528\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u4f7f\u7528LCD1602<\/p>\n\n\n\n \u2022\u5728\u952e\u76d8\u4e2d\u6309\u952e\u6570\u91cf\u8f83\u591a\u65f6\uff0c\u4e3a\u4e86\u51cf\u5c11I\/O\u53e3\u7684\u5360\u7528\uff0c\u901a\u5e38\u5c06\u6309\u952e\u6392\u5217\u6210\u77e9\u9635\u5f62\u5f0f<\/p>\n\n\n\n \u2022\u91c7\u7528\u9010\u884c\u6216\u9010\u5217\u7684\u201c\u626b\u63cf\u201d\uff0c\u5c31\u53ef\u4ee5\u8bfb\u51fa\u4efb\u4f55\u4f4d\u7f6e\u6309\u952e\u7684\u72b6\u6001<\/p>\n\n\n\n \u6570\u7801\u7ba1\u626b\u63cf\uff08\u8f93\u51fa\u626b\u63cf\uff09 \u539f\u7406\uff1a\u663e\u793a\u7b2c1\u4f4d\u2192\u663e\u793a\u7b2c2\u4f4d\u2192\u663e\u793a\u7b2c3\u4f4d\u2192\u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6570\u7801\u7ba1\u540c\u65f6\u663e\u793a\u7684\u6548\u679c<\/p>\n\n\n\n \u77e9\u9635\u952e\u76d8\u626b\u63cf\uff08\u8f93\u5165\u626b\u63cf\uff09\u539f\u7406\uff1a\u8bfb\u53d6\u7b2c1\u884c(\u5217)\u2192\u8bfb\u53d6\u7b2c2\u884c(\u5217) \u2192\u8bfb\u53d6\u7b2c3\u884c(\u5217) \u2192 \u2026\u2026\uff0c\u7136\u540e\u5feb\u901f\u5faa\u73af\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6700\u7ec8\u5b9e\u73b0\u6240\u6709\u6309\u952e\u540c\u65f6\u68c0\u6d4b\u7684\u6548\u679c<\/p>\n\n\n\n \u4ee5\u4e0a\u4e24\u79cd\u626b\u63cf\u65b9\u5f0f\u7684\u5171\u6027\uff1a\u8282\u7701I\/O\u53e3\u3002<\/p>\n\n\n\n \u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\uff1a<\/p>\n\n\n\n P1\u3001P2\u3001P3\u90fd\u662f\u5f31\u4e0a\u62c9\uff0cP0\u5f00\u6f0f\u8f93\u51fa\u3002<\/p>\n\n\n\n \u6700\u597d\u521b\u5efa\u4e00\u4e2a\u6ce8\u91ca\u6a21\u677f\u3002<\/p>\n\n\n\n \u6ce8\u91ca\u7f16\u8bd1\u5668\uff0c\u6839\u636e\u7279\u5b9a\u683c\u5f0f\uff0c\u4ece\u4ee3\u7801\u4e2d\u63d0\u53d6\u6ce8\u91ca\u5f62\u6210\u7279\u5b9a\u8bf4\u660e\u6587\u6863\u3002<\/p>\n\n\n\n 51\u5355\u7247\u673a\u7684\u5b9a\u65f6\u5668\u5c5e\u4e8e\u5355\u7247\u673a\u7684\u5185\u90e8\u8d44\u6e90\uff0c\u5176\u7535\u8def\u7684\u8fde\u63a5\u548c\u8fd0\u8f6c\u5747\u5728\u5355\u7247\u673a\u5185\u90e8\u5b8c\u6210<\/p>\n\n\n\n \u5b9a\u65f6\u5668\u4f5c\u7528\uff1a<\/p>\n\n\n\n \uff081\uff09\u7528\u4e8e\u8ba1\u65f6\u7cfb\u7edf\uff0c\u53ef\u5b9e\u73b0\u8f6f\u4ef6\u8ba1\u65f6\uff0c\u6216\u8005\u4f7f\u7a0b\u5e8f\u6bcf\u9694\u4e00\u56fa\u5b9a\u65f6\u95f4\u5b8c\u6210\u4e00\u9879\u64cd\u4f5c \u5b9a\u65f6\u5668\u4e2a\u6570\uff1a3\u4e2a\uff08T0\u3001T1\u3001T2\uff09\uff0cT0\u548cT1\u4e0e\u4f20\u7edf\u768451\u5355\u7247\u673a\u517c\u5bb9\uff0cT2\u662f\u6b64\u578b\u53f7\u5355\u7247\u673a\u589e\u52a0\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n \u6ce8\u610f\uff1a\u5b9a\u65f6\u5668\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u5b9a\u65f6\u5668\u4e2a\u6570\u548c\u64cd\u4f5c\u65b9\u5f0f\uff0c\u4f46\u4e00\u822c\u6765\u8bf4\uff0cT0\u548cT1\u7684\u64cd\u4f5c\u65b9\u5f0f\u662f\u6240\u670951\u5355\u7247\u673a\u6240\u5171\u6709\u7684\u3002<\/p>\n\n\n\n \u5b9a\u65f6\u5668\u5728\u5355\u7247\u673a\u5185\u90e8\u5c31\u50cf\u4e00\u4e2a\u5c0f\u95f9\u949f\u4e00\u6837\uff0c\u6839\u636e\u65f6\u949f\u7684\u8f93\u51fa\u4fe1\u53f7\uff0c\u6bcf\u9694\u201c\u4e00\u79d2\u201d\uff0c\u8ba1\u6570\u5355\u5143\u7684\u6570\u503c\u5c31\u589e\u52a0\u4e00\uff0c\u5f53\u8ba1\u6570\u5355\u5143\u6570\u503c\u589e\u52a0\u5230\u201c\u8bbe\u5b9a\u7684\u95f9\u949f\u63d0\u9192\u65f6\u95f4\u201d\u65f6\uff0c\u8ba1\u6570\u5355\u5143\u5c31\u4f1a\u5411\u4e2d\u65ad\u7cfb\u7edf\u53d1\u51fa\u4e2d\u65ad\u7533\u8bf7\uff0c\u4ea7\u751f\u201c\u54cd\u94c3\u63d0\u9192\u201d\uff0c\u4f7f\u7a0b\u5e8f\u8df3\u8f6c\u5230\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d\u6267\u884c\u3002<\/p>\n\n\n\n STC89C52\u7684T0\u548cT1\u5747\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a \u5de5\u4f5c\u6a21\u5f0f1\u6846\u56fe<\/p>\n\n\n\n \u4e2d\u65ad\u6e90\u4e2a\u6570\uff1a8\u4e2a\uff08\u5916\u90e8\u4e2d\u65ad0\u3001\u5b9a\u65f6\u56680\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad1\u3001\u5b9a\u65f6\u56681\u4e2d\u65ad\u3001\u4e32\u53e3\u4e2d\u65ad\u3001\u5b9a\u65f6\u56682\u4e2d\u65ad\u3001\u5916\u90e8\u4e2d\u65ad2\u3001\u5916\u90e8\u4e2d\u65ad3\uff09\u3002 \u6570\u5b57\u7535\u8def\u5143\u4ef6\u6807\u793a\uff1a<\/p>\n\n\n\n \u5bc4\u5b58\u5668\u662f\u8fde\u63a5\u8f6f\u786c\u4ef6\u7684\u5a92\u4ecb\u3002\u5728\u5355\u7247\u673a\u4e2d\u5bc4\u5b58\u5668\u5c31\u662f\u4e00\u6bb5\u7279\u6b8a\u7684RAM\u5b58\u50a8\u5668\uff0c\u4e00\u65b9\u9762\uff0c\u5bc4\u5b58\u5668\u53ef\u4ee5\u5b58\u50a8\u548c\u8bfb\u53d6\u6570\u636e\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u6bcf\u4e00\u4e2a\u5bc4\u5b58\u5668\u80cc\u540e\u90fd\u8fde\u63a5\u4e86\u4e00\u6839\u5bfc\u7ebf\uff0c\u63a7\u5236\u7740\u7535\u8def\u7684\u8fde\u63a5\u65b9\u5f0f\u3002\u5bc4\u5b58\u5668\u76f8\u5f53\u4e8e\u4e00\u4e2a\u590d\u6742\u673a\u5668\u7684\u201c\u64cd\u4f5c\u6309\u94ae\u201d\u3002<\/p>\n\n\n\n TCON\uff1aTimer Control, \u5b9a\u65f6\u5668\u63a7\u5236\u3002 \u5934\u6587\u4ef6<intrins.h>,_cror_\u5faa\u73af\u53f3\u79fb\uff0c_crol_\u5faa\u73af\u5de6\u79fb\u51fd\u6570<\/p>\n\n\n\n \u4e32\u53e3\u662f\u4e00\u79cd\u5e94\u7528\u5341\u5206\u5e7f\u6cdb\u7684\u901a\u8baf\u63a5\u53e3\uff0c\u4e32\u53e3\u6210\u672c\u4f4e\u3001\u5bb9\u6613\u4f7f\u7528\u3001\u901a\u4fe1\u7ebf\u8def\u7b80\u5355\uff0c\u53ef\u5b9e\u73b0\u4e24\u4e2a\u8bbe\u5907\u7684\u4e92\u76f8\u901a\u4fe1\u3002 \u7b80\u5355\u53cc\u5411\u4e32\u53e3\u901a\u4fe1\u6709\u4e24\u6839\u901a\u4fe1\u7ebf\uff08\u53d1\u9001\u7aefTXD\u548c\u63a5\u6536\u7aefRXD\uff09\u3002TXD: transmit exchange data\u3002TXD\u4e0eRXD\u8981\u4ea4\u53c9\u8fde\u63a5\u3002\u5f53\u53ea\u9700\u5355\u5411\u7684\u6570\u636e\u4f20\u8f93\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e00\u6839\u901a\u4fe1\u7ebf\u3002\u5f53\u7535\u5e73\u6807\u51c6\u4e0d\u4e00\u81f4\u65f6\uff0c\u9700\u8981\u52a0\u7535\u5e73\u8f6c\u6362\u82af\u7247\u3002<\/p>\n\n\n\n \u7535\u5e73\u6807\u51c6\u662f\u6570\u636e1\u548c\u6570\u636e0\u7684\u8868\u8fbe\u65b9\u5f0f\uff0c\u662f\u4f20\u8f93\u7ebf\u7f06\u4e2d\u4eba\u4e3a\u89c4\u5b9a\u7684\u7535\u538b\u4e0e\u6570\u636e\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u4e32\u53e3\u5e38\u7528\u7684\u7535\u5e73\u6807\u51c6\u6709\u5982\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n TTL\u7535\u5e73\uff1a+5V\u8868\u793a1\uff0c0V\u8868\u793a0\u3002 TTL\uff1atransistor transistor logic\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002 \u5168\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u5728\u540c\u4e00\u65f6\u523b\u4e92\u76f8\u4f20\u8f93\u6570\u636e \u5f02\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u5404\u81ea\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387 \u603b\u7ebf\uff1a\u8fde\u63a5\u5404\u4e2a\u8bbe\u5907\u7684\u6570\u636e\u4f20\u8f93\u7ebf\u8def\uff08\u7c7b\u4f3c\u4e8e\u4e00\u6761\u9a6c\u8def\uff0c\u628a\u8def\u8fb9\u5404\u4f4f\u6237\u8fde\u63a5\u8d77\u6765\uff0c\u4f7f\u4f4f\u6237\u53ef\u4ee5\u76f8\u4e92\u4ea4\u6d41\uff09<\/p>\n\n\n\n STC89C52\u67091\u4e2aUART<\/p>\n\n\n\n STC89C52\u7684UART\u6709\u56db\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a \u6ce2\u7279\u7387\uff1a\u4e32\u53e3\u901a\u4fe1\u7684\u901f\u7387\uff08\u53d1\u9001\u548c\u63a5\u6536\u5404\u6570\u636e\u4f4d\u7684\u95f4\u9694\u65f6\u95f4\uff09\u3002\u6bd4\u7279\u7387\uff1a TL1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c 0xF3\u4e3a234\uff0c\u81f3256\u670913\u4e2a\u6570\u3002\u572812T\u6a21\u5f0f\u4e0b\uff0c\u65f6\u949f\u6bcf1um\u8ba1\u4e00\u6b21\u6570\uff0c13\u5fae\u79d2\u6ea2\u51fa\u4e00\u6b21\u30021\/13us = 0.07692 Mhz\u3002 76920\/16=4807.69Hz 7.69\/4800=0.16\u8bef\u5dee\u3002<\/p>\n\n\n\n HEX\u6a21\u5f0f\/\u5341\u516d\u8fdb\u5236\u6a21\u5f0f\/\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7684\u5f62\u5f0f\u663e\u793a\u3002 LED\u70b9\u9635\u5c4f\u7531\u82e5\u5e72\u4e2a\u72ec\u7acb\u7684LED\u7ec4\u6210\uff0cLED\u4ee5\u77e9\u9635\u7684\u5f62\u5f0f\u6392\u5217\uff0c\u4ee5\u706f\u73e0\u4eae\u706d\u6765\u663e\u793a\u6587\u5b57\u3001\u56fe\u7247\u3001\u89c6\u9891\u7b49\u3002LED\u70b9\u9635\u5c4f\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u516c\u5171\u573a\u5408\uff0c\u5982\u6c7d\u8f66\u62a5\u7ad9\u5668\u3001\u5e7f\u544a\u5c4f\u4ee5\u53ca\u516c\u544a\u724c\u7b49\u3002<\/p>\n\n\n\n LED\u70b9\u9635\u5c4f\u5206\u7c7b LED\u70b9\u9635\u5c4f\u7684\u7ed3\u6784\u7c7b\u4f3c\u4e8e\u6570\u7801\u7ba1\uff0c\u53ea\u4e0d\u8fc7\u662f\u6570\u7801\u7ba1\u628a\u6bcf\u4e00\u5217\u7684\u50cf\u7d20\u4ee5\u201c8\u201d\u5b57\u578b\u6392\u5217\u800c\u5df2\u3002 74HC595\u662f\u4e32\u884c\u8f93\u5165\u5e76\u884c\u8f93\u51fa\u7684\u79fb\u4f4d\u5bc4\u5b58\u5668\uff0c\u53ef\u75283\u6839\u7ebf\u8f93\u5165\u4e32\u884c\u6570\u636e\uff0c8\u6839\u7ebf\u8f93\u51fa\u5e76\u884c\u6570\u636e\uff0c\u591a\u7247\u7ea7\u8054\u540e\uff0c\u53ef\u8f93\u51fa16\u4f4d\u300124\u4f4d\u300132\u4f4d\u7b49\uff0c\u5e38\u7528\u4e8eIO\u53e3\u6269\u5c55\u3002<\/p>\n\n\n\n OE\uff1aoutput enable,\u4f4e\u7535\u5e73\u6709\u6548\u3002 \u2022sfr\uff08special function register\uff09\uff1a\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u58f0\u660e<\/p>\n\n\n\n \u4f8b\uff1asfr P0 = 0x80;<\/p>\n\n\n\n \u58f0\u660eP0\u53e3\u5bc4\u5b58\u5668\uff0c\u7269\u7406\u5730\u5740\u4e3a0x80<\/p>\n\n\n\n \u2022sbit\uff08special bit\uff09\uff1a\u7279\u6b8a\u4f4d\u58f0\u660e<\/p>\n\n\n\n \u4f8b\uff1asbit P0_1 = 0x81; \u6216 sbit P0_1 = P0^1;<\/p>\n\n\n\n \u58f0\u660eP0\u5bc4\u5b58\u5668\u7684\u7b2c1\u4f4d<\/p>\n\n\n\n \u2022\u53ef\u4f4d\u5bfb\u5740\/\u4e0d\u53ef\u4f4d\u5bfb\u5740\uff1a\u5728\u5355\u7247\u673a\u7cfb\u7edf\u4e2d\uff0c\u64cd\u4f5c\u4efb\u610f\u5bc4\u5b58\u5668\u6216\u8005\u67d0\u4e00\u4f4d\u7684\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u7ed9\u51fa\u5176\u7269\u7406\u5730\u5740\uff0c\u53c8\u56e0\u4e3a\u4e00\u4e2a\u5bc4\u5b58\u5668\u91cc\u67098\u4f4d\uff0c\u6240\u4ee5\u4f4d\u7684\u6570\u91cf\u662f\u5bc4\u5b58\u5668\u6570\u91cf\u76848\u500d\uff0c\u5355\u7247\u673a\u65e0\u6cd5\u5bf9\u6240\u6709\u4f4d\u8fdb\u884c\u7f16\u7801\uff0c\u6545\u6bcf8\u4e2a\u5bc4\u5b58\u5668\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u662f\u53ef\u4ee5\u4f4d\u5bfb\u5740\u7684\u3002\u5bf9\u4e0d\u53ef\u4f4d\u5bfb\u5740\u7684\u5bc4\u5b58\u5668\uff0c\u82e5\u8981\u53ea\u64cd\u4f5c\u5176\u4e2d\u4e00\u4f4d\u800c\u4e0d\u5f71\u54cd\u5176\u5b83\u4f4d\u65f6\uff0c\u53ef\u7528\u201c&=\u201d\u3001\u201c|=\u201d\u3001\u201c^=\u201d\u7684\u65b9\u6cd5\u8fdb\u884c\u4f4d\u64cd\u4f5c<\/p>\n\n\n\n DS1302\u662f\u7531\u7f8e\u56fdDALLAS\u516c\u53f8\u63a8\u51fa\u7684\u5177\u6709\u6d93\u7ec6\u7535\u6d41\u5145\u7535\u80fd\u529b\u7684\u4f4e\u529f\u8017\u5b9e\u65f6\u65f6\u949f\u82af\u7247\u3002\u5b83\u53ef\u4ee5\u5bf9\u5e74\u3001\u6708\u3001\u65e5\u3001\u5468\u3001\u65f6\u3001\u5206\u3001\u79d2\u8fdb\u884c\u8ba1\u65f6\uff0c\u4e14\u5177\u6709\u95f0\u5e74\u8865\u507f\u7b49\u591a\u79cd\u529f\u80fd\u3002 DS3231, \u6bd4DS1302\u7cbe\u5ea6\u9ad8\uff0c\u5185\u90e8\u81ea\u7cbe\u632f\u3002DS12C887.<\/p>\n\n\n\n BCD\u7801\uff08Binary Coded Decimal\u200e\uff09\uff0c\u75284\u4f4d\u4e8c\u8fdb\u5236\u6570\u6765\u8868\u793a1\u4f4d\u5341\u8fdb\u5236\u6570<\/p>\n\n\n\n \u4f8b\uff1a0001 0011\u8868\u793a13\uff0c1000 0101\u8868\u793a85\uff0c0001 1010\u4e0d\u5408\u6cd5<\/p>\n\n\n\n \u5728\u5341\u516d\u8fdb\u5236\u4e2d\u7684\u4f53\u73b0\uff1a0x13\u8868\u793a13\uff0c0x85\u8868\u793a85\uff0c0x1A\u4e0d\u5408\u6cd5<\/p>\n\n\n\n BCD\u7801\u8f6c\u5341\u8fdb\u5236\uff1aDEC=BCD\/16*10+BCD%16; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n \u5341\u8fdb\u5236\u8f6cBCD\u7801\uff1aBCD=DEC\/10*16+DEC%10; \uff082\u4f4dBCD\uff09<\/p>\n\n\n\n <\/p>\n\n\n\n \u8702\u9e23\u5668\u662f\u4e00\u79cd\u5c06\u7535\u4fe1\u53f7\u8f6c\u6362\u4e3a\u58f0\u97f3\u4fe1\u53f7\u7684\u5668\u4ef6\uff0c\u5e38\u7528\u6765\u4ea7\u751f\u8bbe\u5907\u7684\u6309\u952e\u97f3\u3001\u62a5\u8b66\u97f3\u7b49\u63d0\u793a\u4fe1\u53f7\u3002 \u4e09\u6781\u7ba1\u9a71\u52a8<\/p>\n\n\n\n \u96c6\u6210\u7535\u8def\u9a71\u52a8<\/p>\n\n\n\n AT24C02\u662f\u4e00\u79cd\u53ef\u4ee5\u5b9e\u73b0\u6389\u7535\u4e0d\u4e22\u5931\u7684\u5b58\u50a8\u5668\uff0c\u53ef\u7528\u4e8e\u4fdd\u5b58\u5355\u7247\u673a\u8fd0\u884c\u65f6\u60f3\u8981\u6c38\u4e45\u4fdd\u5b58\u7684\u6570\u636e\u4fe1\u606f\u3002 I2C\u603b\u7ebf(Inter IC BUS\uff09\u662f\u7531Philips\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002 \u6240\u6709I2C\u8bbe\u5907\u7684SCL\u8fde\u5728\u4e00\u8d77\uff0cSDA\u8fde\u5728\u4e00\u8d77\u3002 SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u9ad8\u7535\u5e73\u5207\u6362\u5230\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n SCL\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA\u4ece\u4f4e\u7535\u5e73\u5207\u6362\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n SCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4e3b\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4ece\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u3002\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA\u3002<\/p>\n\n\n\n \u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff1aSCL\u4f4e\u7535\u5e73\u671f\u95f4\uff0c\u4ece\u673a\u5c06\u6570\u636e\u4f4d\u4f9d\u6b21\u653e\u5230SDA\u7ebf\u4e0a(\u9ad8\u4f4d\u5728\u524d)\uff0c\u7136\u540e\u62c9\u9ad8SCL\uff0c\u4e3b\u673a\u5c06\u5728SCL\u9ad8\u7535\u5e73\u671f\u95f4\u8bfb\u53d6\u6570\u636e\u4f4d\uff0c\u6240\u4ee5SCL\u9ad8\u7535\u5e73\u671f\u95f4SDA\u4e0d\u5141\u8bb8\u6709\u6570\u636e\u53d8\u5316\uff0c\u4f9d\u6b21\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b8\u6b21\uff0c\u5373\u53ef\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n \u5728\u63a5\u6536\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u53d1\u9001\u4e00\u4f4d\u6570\u636e\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\u3002<\/p>\n\n\n\n \u5728\u53d1\u9001\u5b8c\u4e00\u4e2a\u5b57\u8282\u4e4b\u540e\uff0c\u4e3b\u673a\u5728\u4e0b\u4e00\u4e2a\u65f6\u949f\u63a5\u6536\u4e00\u4f4d\u6570\u636e\uff0c\u5224\u65ad\u4ece\u673a\u662f\u5426\u5e94\u7b54\uff0c\u6570\u636e0\u8868\u793a\u5e94\u7b54\uff0c\u6570\u636e1\u8868\u793a\u975e\u5e94\u7b54\uff08\u4e3b\u673a\u5728\u63a5\u6536\u4e4b\u524d\uff0c\u9700\u8981\u91ca\u653eSDA)\u3002<\/p>\n\n\n\n \u5b57\u8282\u5199\uff1a\u5728WORD ADDRESS\u5904\u5199\u5165\u6570\u636eDATA<\/p>\n\n\n\n AT24C02\u7684\u56fa\u5b9a\u5730\u5740\u4e3a1010\uff0c\u53ef\u914d\u7f6e\u5730\u5740\u672c\u5f00\u53d1\u677f\u4e0a\u4e3a000\uff0c\u6240\u4ee5SLAVE ADDRESS+W \u4e3a0xA0, SLAVE ADDRESS+R \u4e3a0xA1;<\/p>\n\n\n\n DS18B20\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u5b57\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5176\u63a7\u5236\u547d\u4ee4\u548c\u6570\u636e\u90fd\u662f\u4ee5\u6570\u5b57\u4fe1\u53f7\u7684\u65b9\u5f0f\u8f93\u5165\u8f93\u51fa\uff0c\u76f8\u6bd4\u8f83\u4e8e\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5177\u6709\u529f\u80fd\u5f3a\u5927\u3001\u786c\u4ef6\u7b80\u5355\u3001\u6613\u6269\u5c55\u3001\u6297\u5e72\u6270\u6027\u5f3a\u7b49\u7279\u70b9\u3002\uff08\u6a21\u62df\u6e29\u5ea6\u4f20\u611f\u5668\u5982\u70ed\u654f\u7535\u963b\u3002\uff09 64-BIT ROM\uff1a\u4f5c\u4e3a\u5668\u4ef6\u5730\u5740\uff0c\u7528\u4e8e\u603b\u7ebf\u901a\u4fe1\u7684\u5bfb\u5740\u3002 \u5355\u603b\u7ebf\uff081-Wire BUS\uff09\u662f\u7531Dallas\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u7528\u6570\u636e\u603b\u7ebf\u3002 \u8bbe\u5907\u7684DQ\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002 \u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e\u81f3\u5c11480us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u7b49\u5f8515~60us\u540e\uff0c\u5b58\u5728\u7684\u4ece\u673a\u4f1a\u62c9\u4f4e\u603b\u7ebf60~240us\u4ee5\u54cd\u5e94\u4e3b\u673a\uff0c\u4e4b\u540e\u4ece\u673a\u5c06\u91ca\u653e\u603b\u7ebf\u3002<\/p>\n\n\n\n \u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e60~120us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90010\uff1b\u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u8868\u793a\u53d1\u90011\u3002\u4ece\u673a\u5c06\u5728\u603b\u7ebf\u62c9\u4f4e30us\u540e\uff08\u5178\u578b\u503c\uff09\u8bfb\u53d6\u7535\u5e73\uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n \u4e3b\u673a\u5c06\u603b\u7ebf\u62c9\u4f4e1~15us\uff0c\u7136\u540e\u91ca\u653e\u603b\u7ebf\uff0c\u5e76\u5728\u62c9\u4f4e\u540e15us\u5185\u8bfb\u53d6\u603b\u7ebf\u7535\u5e73\uff08\u5c3d\u91cf\u8d34\u8fd115us\u7684\u672b\u5c3e\uff09\uff0c\u8bfb\u53d6\u4e3a\u4f4e\u7535\u5e73\u5219\u4e3a\u63a5\u65360\uff0c\u8bfb\u53d6\u4e3a\u9ad8\u7535\u5e73\u5219\u4e3a\u63a5\u65361 \uff0c\u6574\u4e2a\u65f6\u95f4\u7247\u5e94\u5927\u4e8e60us\u3002<\/p>\n\n\n\n \u8fde\u7eed\u8c03\u75288\u6b21\u53d1\u9001\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n \u8fde\u7eed\u8c03\u75288\u6b21\u63a5\u6536\u4e00\u4f4d\u7684\u65f6\u5e8f\uff0c\u4f9d\u6b21\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\u76848\u4f4d\uff08\u4f4e\u4f4d\u5728\u524d\uff09\u3002<\/p>\n\n\n\n \u521d\u59cb\u5316\uff1a\u4ece\u673a\u590d\u4f4d\uff0c\u4e3b\u673a\u5224\u65ad\u4ece\u673a\u662f\u5426\u54cd\u5e94\u3002 \u6e29\u5ea6\u53d8\u6362\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362<\/p>\n\n\n\n \u6e29\u5ea6\u8bfb\u53d6\uff1a\u521d\u59cb\u5316\u2192\u8df3\u8fc7ROM \u2192\u8bfb\u6682\u5b58\u5668\u2192\u8fde\u7eed\u7684\u8bfb\u64cd\u4f5c<\/p>\n\n\n\n LCD1602\uff08Liquid Crystal Display\uff09\u6db2\u6676\u663e\u793a\u5c4f\u662f\u4e00\u79cd\u5b57\u7b26\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u53ef\u4ee5\u663e\u793aASCII\u7801\u7684\u6807\u51c6\u5b57\u7b26\u548c\u5176\u5b83\u7684\u4e00\u4e9b\u5185\u7f6e\u7279\u6b8a\u5b57\u7b26\uff0c\u8fd8\u53ef\u4ee5\u67098\u4e2a\u81ea\u5b9a\u4e49\u5b57\u7b26\u3002<\/figure>\n\n\n\n51\u5355\u7247\u673a<\/h2>\n\n\n\n
\n
STC89C52\u5355\u7247\u673a<\/h2>\n\n\n\n
\u516c\u53f8\uff1aSTC\u516c\u53f8\uff0c \u4e2d\u56fd\u516c\u53f8\u3002
\u4f4d\u6570\uff1a8\u4f4d
RAM\uff1a512\u5b57\u8282
ROM\uff1a8K\uff08Flash\uff09
\u5de5\u4f5c\u9891\u7387\uff1a12MHZ<\/p>\n\n\n\n\u547d\u540d\u89c4\u5219<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u62c6\u89e3<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u5355\u7247\u673a\u5185\u90e8\u7ed3\u6784\u56fe<\/h2>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5355\u7247\u673a\u7ba1\u811a\u56fe<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u6700\u5c0f\u7cfb\u7edf<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u65b0\u5efa\u5de5\u7a0b\uff1a<\/h2>\n\n\n\n
LED\u53d1\u5149\u4e8c\u6781\u7ba1 light emitting diode<\/h2>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/\u70b9\u4eae\u4e00\u4e2aLED\u706f\uff0c\u5171\u5730\u63a5\u6cd5\n#include <REGX51.H>\n\nvoid main()\n{\n P2=0x01;\n while(1)\n {\n \n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\/\/LED\u95ea\u70c1\u4ee3\u7801\n#include <REGX51.H>\n#include <INTRINS.H> \/\/\u5305\u542b_nop_()\u51fd\u6570\u539f\u578b\n\nvoid Delayxms(unsigned int xms)\t\t\/\/@12.000MHz\n{\n unsigned char i, j;\n while(xms--)\n {\n i = 2;\n j = 239;\n do\n {\n while (--j);\n } while (--i);\n }\n}\n\nvoid main(void)\n{\n P2=0xFF;\n while(1)\n {\n P2=0xFF;\n Delayxms(500);\n P2=0x00;\n Delayxms(500);\n }\n}<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\u72ec\u7acb\u6309\u952e<\/h2>\n\n\n\n
<\/figure>\n\n\n\n
sbit\uff1a\u4f4d\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n\/\/\u6309\u4e0b\u6309\u952eLED\u4eae\uff0c\u677e\u624bLED\u706d\n#include <REGX52.H>\n\nvoid main()\n{\n P2=0x00;\n while(1)\n {\n if(P0_0==0)\n {\n P2_0=1;\n }\n else\n {\n P2_0=0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\u6309\u952e\u7684\u6296\u52a8<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\/\/\u6309\u952e\u63a7\u5236LED\u706f\u4eae\u706d\u72b6\u6001\u5207\u6362\nvoid main()\n{\n P2=0x00;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(20);\/\/\u6d88\u6296\n while(P0_0==0); \/\/\u677e\u624b\u68c0\u6d4b\n Delayxms(20);\n P2_0=~P2_0;\n }\n }\n}\n <\/code><\/pre>\n\n\n\n\/\/\u7b2c\u4e00\u4e2a\u6309\u952e\u63a7\u5236\u5411\u5de6\u6d41\u6c34\u706f\uff0c\u7b2c\u4e8c\u4e2a\u6309\u952e\u63a7\u5236\u5411\u53f3\u6d41\u6c34\u706f\nvoid main()\n{\n unsigned char LEDNum=0;\n P2=0x01;\n\n while(1)\n {\n if(P0_0==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n LEDNum++;\n if(LEDNum>=8)\n LEDNum=0;\n P2=0x01<<LEDNum;\n }\n if(P0_1==0)\n {\n Delayxms(200);\n while(P0_0==0);\n Delayxms(200);\n if(LEDNum==0)\n LEDNum=8;\n LEDNum--;\n if(LEDNum<0)\n LEDNum=8;\n P2=0x01<<LEDNum;\n }\n }\n}<\/code><\/pre>\n\n\n\n\/\/\u72ec\u7acb\u6309\u952e\u83b7\u53d6\u952e\u503c\n#include <REGX51.H>\n#include \"Delay.h\"\n\n\/**\n * @brief \u83b7\u53d6\u72ec\u7acb\u6309\u952e\u952e\u7801\n * @param \u65e0 \n * @retval \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\uff0c\u8303\u56f40-8\uff0c\u65e0\u6309\u952e\u6309\u4e0b\uff0c\u8fd4\u56de0;\n *\/\nunsigned char Key()\n{\n unsigned char KeyNumber=0;\n \n if(P0_0==0){Delayxms(50);while(P0_0==0);Delayxms(50);KeyNumber=1;}\n if(P0_1==0){Delayxms(50);while(P0_1==0);Delayxms(50);KeyNumber=2;}\n if(P0_2==0){Delayxms(50);while(P0_2==0);Delayxms(50);KeyNumber=3;}\n if(P0_3==0){Delayxms(50);while(P0_3==0);Delayxms(50);KeyNumber=4;}\n if(P0_4==0){Delayxms(50);while(P0_4==0);Delayxms(50);KeyNumber=5;}\n if(P0_5==0){Delayxms(50);while(P0_5==0);Delayxms(50);KeyNumber=6;}\n if(P0_6==0){Delayxms(50);while(P0_6==0);Delayxms(50);KeyNumber=7;}\n if(P0_7==0){Delayxms(50);while(P0_7==0);Delayxms(50);KeyNumber=8;}\n \n return KeyNumber;\n}\n<\/code><\/pre>\n\n\n\n\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
\u6570\u7801\u7ba1<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u6570\u7801\u7ba1\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n
<\/figure>\n\n\n\n
\u4f4d\u9009\u3001\u6bb5\u9009\u3001\u6bb5\u7801\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n74LS138\u300174HC138\uff1a\u4e09\u516b\u8bd1\u7801\u5668<\/h3>\n\n\n\n
<\/figure>\n\n\n\n
DIR: direction \u65b9\u5411<\/p>\n\n\n\n\/\/\u70b9\u4eae\u52a8\u6001\u6570\u7801\u7ba1\u67d0\u4e00\u4f4d\n#include <REGX51.H>\n\/\/P2\u901a\u8fc7138\u8bd1\u7801\u5668\u4f4d\u9009\n\/\/P0\u901a\u8fc774HC573D\u6bb5\u9009\nvoid main(void)\n{\n P2=0x02; \/\/\u9009\u7b2c\u4e09\u4f4d\n \/\/\u663e\u793a\u6570\u5b576\uff0c\u9700\u8981a\u5bf9\u5e94P0_7 c\u5bf9\u5e94P0_5 d_4 e_3 f_2 g_1\u4eae\uff0c b_6 dp_0\u706d 0111 1101 7D\n P0=0x7D;\n while(1)\n { \n }\n}<\/code><\/pre>\n\n\n\n\/\/\u6307\u5b9a\u52a8\u6001\u6570\u7801\u7ba1\u7b2c\u51e0\u4f4d\u663e\u793a\u4ec0\u4e48\u6570\u5b57\uff0c\n\/\/Location \u4ece1\u52308\uff0c8\u4e2a\u6570\u7801\u7ba1\u4ece\u5de6\u5f80\u53f31\u30012\u2026\u20268\u6392\u5e8f\nvoid Nixie(unsigned char Location,unsigned char Number)\n{\n switch(Location)\n {\n case 8: P2_2=1; P2_1=1; P2_0=1;break;\n case 7: P2_2=1; P2_1=1; P2_0=0;break;\n case 6: P2_2=1; P2_1=0; P2_0=1;break;\n case 5: P2_2=1; P2_1=0; P2_0=0;break;\n case 4: P2_2=0; P2_1=1; P2_0=1;break;\n case 3: P2_2=0; P2_1=1; P2_0=0;break;\n case 2: P2_2=0; P2_1=0; P2_0=1;break;\n case 1: P2_2=0; P2_1=0; P2_0=0;break;\n default:\n break;\n };\n P0=NixieTable[Number];\n}\n<\/code><\/pre>\n\n\n\n\u6570\u7801\u7ba1\u9a71\u52a8\u65b9\u5f0f<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\nLCD1602\u8c03\u8bd5\u5de5\u5177<\/h2>\n\n\n\n
\u51fd\u6570<\/strong><\/td> \u4f5c\u7528<\/strong><\/td><\/tr> LCD_Init();<\/td> \u521d\u59cb\u5316<\/td><\/tr> LCD_ShowChar(1,1,’A’);<\/td> \u663e\u793a\u4e00\u4e2a\u5b57\u7b26<\/td><\/tr> LCD_ShowString(1,3,”Hello”);<\/td> \u663e\u793a\u5b57\u7b26\u4e32<\/td><\/tr> LCD_ShowNum(1,9,123,3);<\/td> \u663e\u793a\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowSignedNum(1,13,-66,2);<\/td> \u663e\u793a\u6709\u7b26\u53f7\u5341\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowHexNum(2,1,0xA8,2);<\/td> \u663e\u793a\u5341\u516d\u8fdb\u5236\u6570\u5b57<\/td><\/tr> LCD_ShowBinNum(2,4,0xAA,8);<\/td> \u663e\u793a\u4e8c\u8fdb\u5236\u6570\u5b57<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u77e9\u9635\u952e\u76d8<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u626b\u63cf<\/h3>\n\n\n\n
IO\u53e3\u5f31\u4e0a\u62c9\u6a21\u5f0f<\/h3>\n\n\n\n
<\/figure>\n\n\n\nKeil5\u6a21\u677f\u529f\u80fd<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u7a0b\u5e8f\u6ce8\u91ca\u8303\u4f8b<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\/\/20221129\u77e9\u9635\u952e\u76d8\u83b7\u53d6\u952e\u7801\n#include <REGX51.H>\n#include \"Delay.h\"\n\/**\n * @brief \u77e9\u9635\u952e\u76d8\uff0c\u8bfb\u53d6\u6309\u952e\u952e\u7801\n * @param \u65e0\n * @retval KeyNumber \u6309\u4e0b\u6309\u952e\u7684\u952e\u7801\u503c\n * \u5982\u679c\u6309\u952e\u6309\u4e0b\u4e0d\u653e\uff0c\u7a0b\u5e8f\u4f1a\u505c\u7559\u5728\u6b64\u51fd\u6570\uff0c\u677e\u624b\u7684\u4e00\u77ac\u95f4\uff0c\u8fd4\u56de\u952e\u7801\uff0c\u6ca1\u6709\u6309\u952e\uff0c\u8fd4\u56de0;\n *\/\nunsigned char MatrixKey()\n{\n unsigned char KeyNumber=0;\n \n \/\/\u6309\u5217\u626b\u63cf\n P1=0xFF;\n P1_3=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=1;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=5;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=9;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=13;}\n \n P1=0xFF;\n P1_2=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=2;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=6;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=10;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=14;}\n \n P1=0xFF;\n P1_1=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=3;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=7;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=11;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=15;}\n \n P1=0xFF;\n P1_0=0;\n if(P1_7==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=4;}\n if(P1_6==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=8;}\n if(P1_5==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=12;}\n if(P1_4==0){Delayxms(20);while(P1_7==0);Delayxms(20);KeyNumber=16;}\n \n Delayxms(100);\n \n return KeyNumber;\n}<\/code><\/pre>\n\n\n\n\/\/20221129\u77e9\u9635\u952e\u76d8\u5bc6\u7801\u9501\n#include <REGX51.H>\n#include \"Delay.h\"\n#include \"LCD1602.h\"\n#include \"MatrixKey.h\"\n\nunsigned char KeyNum;\nunsigned int Password,Count;\n\n\/\/s10\u4ee3\u88680 s11\u786e\u8ba4\u952e s12\u53d6\u6d88\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Password:\");\n while(1)\n {\n KeyNum=MatrixKey();\n if(KeyNum)\n {\n if(KeyNum<=10 && Count<4) \/\/\u5982\u679c\u952e\u7801S1~S10\u6309\u4e0b\uff0c\u8f93\u5165\u5bc6\u7801\n {\n Password*=10; \/\/\u5bc6\u7801\u5de6\u79fb1\u4f4d\n Password+=KeyNum%10;\/\/\u83b7\u53d61\u4f4d\u5bc6\u7801\n Count++;\/\/\u8ba1\u6b21\u52a01\n }\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n \n if(KeyNum==11 && Count==4)\/\/\u5982\u679cS11\u6309\u952e\u6309\u4e0b\uff0c\u5224\u65ad\u662f\u5426\u662f4\u4f4d\uff0c\u5982\u679c\u662f\uff0c\u5219\u9a8c\u8bc1\u5bc6\u7801\n {\n if(Password==2345)\n {\n LCD_ShowString(1,14,\"OK \");\n }\n else\n {\n LCD_ShowString(1,14,\"ERR\");\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n }\n }\n \n if(KeyNum==12)\/\/\u5982\u679cS12\u53d6\u6d88\n {\n Password=0;\n Count=0;\n LCD_ShowNum(2,1,Password,4);\/\/\u66f4\u65b0\u663e\u793a\n } \n }\n}\n<\/code><\/pre>\n\n\n\n\u5b9a\u65f6\u5668<\/h2>\n\n\n\n
\uff082\uff09\u66ff\u4ee3\u957f\u65f6\u95f4\u7684Delay\uff0c\u63d0\u9ad8CPU\u7684\u8fd0\u884c\u6548\u7387\u548c\u5904\u7406\u901f\u5ea6\u2026\u2026
\uff083\uff09\u591a\u4efb\u52a1\u5207\u6362\u5b9a\u65f6\u2026\u2026<\/p>\n\n\n\nSTC89C52\u5b9a\u65f6\u5668\u8d44\u6e90<\/h3>\n\n\n\n
\u5b9a\u65f6\u671f\u6846\u56fe<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u5de5\u4f5c\u6a21\u5f0f<\/h3>\n\n\n\n
\u6a21\u5f0f0\uff1a13\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668
\u6a21\u5f0f1\uff1a16\u4f4d\u5b9a\u65f6\u5668\/\u8ba1\u6570\u5668\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a8\u4f4d\u81ea\u52a8\u91cd\u88c5\u6a21\u5f0f
\u6a21\u5f0f3\uff1a\u4e24\u4e2a8\u4f4d\u8ba1\u6570\u5668<\/p>\n\n\n\n\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u4e2d\u65ad\u7a0b\u5e8f\u6d41\u7a0b<\/h3>\n\n\n\n
<\/figure>\n\n\n\nSTC89C52\u7cfb\u5217\u5355\u7247\u673a\u4e2d\u65ad\u6e90<\/h3>\n\n\n\n
\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\uff1a4\u4e2a\u3002
\u6ce8\u610f\uff1a\u4e2d\u65ad\u7684\u8d44\u6e90\u548c\u5355\u7247\u673a\u7684\u578b\u53f7\u662f\u5173\u8054\u5728\u4e00\u8d77\u7684\uff0c\u4e0d\u540c\u7684\u578b\u53f7\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u4e2d\u65ad\u8d44\u6e90\uff0c\u4f8b\u5982\u4e2d\u65ad\u6e90\u4e2a\u6570\u4e0d\u540c\u3001\u4e2d\u65ad\u4f18\u5148\u7ea7\u4e2a\u6570\u4e0d\u540c\u7b49\u7b49<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u548c\u4e2d\u65ad\u7cfb\u7edf<\/h2>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5b9a\u65f6\u5668\u76f8\u5173\u5bc4\u5b58\u5668<\/h2>\n\n\n\n
TF\uff1aTimer Flag\uff0c\u8ba1\u6570\u5668\u5230\u8fbe\u6700\u9ad8\u503c\u65f6\uff0c\u7531\u786c\u4ef6\u7f6e1\u3002
TR: Timer Run,TR=1,\u8ba1\u7b97\u5668\u5f00\u59cb\u8fd0\u884c\u3002
EA\uff1aEnable All<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nSTP-ISP\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u81ea\u52a8\u751f\u6210\u5b9a\u65f6\u5668\u914d\u7f6e\u4ee3\u7801<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\/\/\u5b9a\u65f6\u56680\u521d\u59cb\u5316\u53ca\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\n#include <REGX51.H>\n\n\/**\n * @brief \u5b9a\u65f6\u56680\u521d\u59cb\u5316\uff0c1\u6beb\u79d2@12Mhz\n * @param \u65e0\n * @retval \u65e0\n *\/\n\/\/\u53ef\u4ee5\u4f7f\u7528\u8f6f\u4ef6STP-ISP\u8f6f\u4ef6\u5b9a\u65f6\u5668\u8ba1\u7b97\u5668\u529f\u80fd\u751f\u6210\u914d\u7f6e\u4ee3\u7801\nvoid Timer0_Init()\n{\n \tTMOD &= 0xF0;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x01;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTF0 = 0;\t\t\/\/\u6e05\u9664TF0\u6807\u5fd7\n\tTR0 = 1;\t\t\/\/\u5b9a\u65f6\u56680\u5f00\u59cb\u8ba1\n ET0=1;\n EA=1;\n PT0=0;\n}\n\n\/\/Timer0\u4e2d\u65ad\u51fd\u6570\u6a21\u677f\uff0c\n\/\/void Timer0_Routine() interrupt 1\n\/\/{\n\/\/ static unsigned int T0Count;\n\/\/ TL0 = 0x18;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/\tTH0 = 0xFC;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\/\/ T0Count++;\n\/\/ if(T0Count>=1000)\n\/\/ {\n\/\/ T0Count=0;\n\/\/ P2_0=~P2_0;\n\/\/ }\n\/\/}<\/code><\/pre>\n\n\n\n\u4e32\u53e3\u901a\u4fe1<\/h2>\n\n\n\n
\u5355\u7247\u673a\u7684\u4e32\u53e3\u53ef\u4ee5\u4f7f\u5355\u7247\u673a\u4e0e\u5355\u7247\u673a\u3001\u5355\u7247\u673a\u4e0e\u7535\u8111\u3001\u5355\u7247\u673a\u4e0e\u5404\u5f0f\u5404\u6837\u7684\u6a21\u5757\u4e92\u76f8\u901a\u4fe1\uff0c\u6781\u5927\u7684\u6269\u5c55\u4e86\u5355\u7247\u673a\u7684\u5e94\u7528\u8303\u56f4\uff0c\u589e\u5f3a\u4e86\u5355\u7247\u673a\u7cfb\u7edf\u7684\u786c\u4ef6\u5b9e\u529b\u3002
51\u5355\u7247\u673a\u5185\u90e8\u81ea\u5e26UART\uff08Universal Asynchronous Receiver Transmitter\uff0c\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff09\uff0c\u53ef\u5b9e\u73b0\u5355\u7247\u673a\u7684\u4e32\u53e3\u901a\u4fe1\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u63a5\u53e3\u53ca\u5f15\u811a\u5b9a\u4e49<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u786c\u4ef6\u7535\u8def<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u7535\u5e73\u6807\u51c6<\/h3>\n\n\n\n
RS232\u7535\u5e73\uff1a-3~-15V\u8868\u793a1\uff0c+3~+15V\u8868\u793a0\u300210\u7c73\u5de6\u53f3\u8ddd\u79bb\u3002
RS485\u7535\u5e73\uff1a\u4e24\u7ebf\u538b\u5dee+2~+6V\u8868\u793a1\uff0c-2~-6V\u8868\u793a0\uff08\u5dee\u5206\u4fe1\u53f7\uff1acan\u3001usb\u90fd\u662f\u5dee\u5206\u4fe1\u53f7\uff09\u53ef\u4f20\u8f93\u6700\u59271000\u7c73\u8ddd\u79bb\u3002<\/p>\n\n\n\n\u5e38\u89c1\u901a\u4fe1\u63a5\u53e3\u6bd4\u8f83<\/h3>\n\n\n\n
\u534a\u53cc\u5de5\uff1a\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u4e92\u76f8\u4f20\u8f93\u6570\u636e\uff0c\u4f46\u5fc5\u987b\u5206\u65f6\u590d\u7528\u4e00\u6839\u6570\u636e\u7ebf
\u5355\u5de5\uff1a\u901a\u4fe1\u53ea\u80fd\u6709\u4e00\u65b9\u53d1\u9001\u5230\u53e6\u4e00\u65b9\uff0c\u4e0d\u80fd\u53cd\u5411\u4f20\u8f93<\/p>\n\n\n\n
\u540c\u6b65\uff1a\u901a\u4fe1\u53cc\u65b9\u9760\u4e00\u6839\u65f6\u949f\u7ebf\u6765\u7ea6\u5b9a\u901a\u4fe1\u901f\u7387<\/p>\n\n\n\n51\u5355\u7247\u673a\u7684UART<\/h3>\n\n\n\n
\u6a21\u5f0f0\uff1a\u540c\u6b65\u79fb\u4f4d\u5bc4\u5b58\u5668
\u6a21\u5f0f1\uff1a8\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff08\u5e38\u7528\uff09
\u6a21\u5f0f2\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a
\u6a21\u5f0f3\uff1a9\u4f4dUART\uff0c\u6ce2\u7279\u7387\u53ef\u53d8<\/p>\n\n\n\n\u4e32\u53e3\u53c2\u6570\u53ca\u65f6\u5e8f\u56fe<\/h3>\n\n\n\n
\u68c0\u9a8c\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u9a8c\u8bc1
\u505c\u6b62\u4f4d\uff1a\u7528\u4e8e\u6570\u636e\u5e27\u95f4\u9694<\/p>\n\n\n\n\u4e32\u53e3\u6a21\u5f0f\u56fe<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/\u5355\u7247\u673aUART.c\u4ee3\u780120221130\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x40;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n<\/code><\/pre>\n\n\n\n\/\/\u5355\u7247\u673a1\u79d2\u5411\u7535\u8111\u53d1\u9001\u4e00\u4e2a\u6570\u636e20221130\n#include <REGX52.H>\n#include \"Delay.h\"\n#include \"UART.h\"\n\nunsigned char Sec;\n\nvoid main()\n{\n UART_Init();\n \n\twhile(1)\n\t{\n\t\tUART_SendByte(Sec);\n Sec++;\n Delayxms(1000);\n\t}\n}\n<\/code><\/pre>\n\n\n\n\/\/\u4e32\u53e3\u63a5\u6536\u6570\u636e\u4ee3\u7801\n#include <REGX52.H>\n\n\/**\n * @brief \u4e32\u53e3\u521d\u59cb\u53164800bps@12.000MHz\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid UART_Init()\/\/\n{\n SCON=0x50;\n PCON |= 0x80;\t\t\/\/\u4f7f\u80fd\u6ce2\u7279\u7387\u500d\u901f\u4f4dSMOD\n TMOD &= 0x0F;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTMOD |= 0x20;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\u6a21\u5f0f\n\tTL1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u59cb\u503c\n\tTH1 = 0xF3;\t\t\/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c\n\tET1 = 0;\t\t\/\/\u7981\u6b62\u5b9a\u65f6\u5668%d\u4e2d\u65ad\n\tTR1 = 1;\t\t\/\/\u5b9a\u65f6\u56681\u5f00\u59cb\u8ba1\u65f6\n EA=1; \/\/\u542f\u52a8\u4e2d\u65ad\u529f\u80fd\n ES=1; \/\/\u5168\u80fd\u4e32\u4e32\u53e3\u4e2d\u65ad\n}\n\n\/**\n * @brief \u4e32\u53e3\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @param Byte \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n * @retval \u65e0\n *\/\nvoid UART_SendByte(unsigned char Byte)\n{\n SBUF=Byte;\n while(TI==0);\/\/\u7b49\u5f85\u53d1\u9001\u5b8c\u6210\n TI=0;\n}\n\n\/\n\n\/\/\u4e32\u53e3\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6a21\u677f\n\/\/void UART_Routine() interrupt 4\n\/\/{\n\/\/ if(RI==1)\/\/\u63a5\u6536\u4e2d\u65ad\n\/\/ {\n\n\/\/ RI=0;\n\/\/ }\n\/\/ \n\/\/}<\/code><\/pre>\n\n\n\n\u6ce2\u7279\u7387\u8ba1\u7b97\uff1a<\/h3>\n\n\n\n
TH1 = 0xF3; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u91cd\u8f7d\u503c<\/p>\n\n\n\n\u6570\u636e\u663e\u793a\u6a21\u5f0f<\/h3>\n\n\n\n
\u6587\u672c\u6a21\u5f0f\/\u5b57\u7b26\u6a21\u5f0f\uff1a\u4ee5\u539f\u59cb\u6570\u636e\u7f16\u7801\u540e\u7684\u5f62\u5f0f\u663e\u793a\u3002<\/p>\n\n\n\nLED\u70b9\u9635\u5c4f<\/h2>\n\n\n\n
\u6309\u989c\u8272\uff1a\u5355\u8272\u3001\u53cc\u8272\u3001\u5168\u5f69
\u6309\u50cf\u7d20\uff1a8*8\u300116*16\u7b49\uff08\u5927\u89c4\u6a21\u7684LED\u70b9\u9635\u901a\u5e38\u7531\u5f88\u591a\u4e2a\u5c0f\u70b9\u9635\u62fc\u63a5\u800c\u6210\uff09\u3002<\/p>\n\n\n\n\u663e\u793a\u539f\u7406<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n
LED\u70b9\u9635\u5c4f\u4e0e\u6570\u7801\u7ba1\u4e00\u6837\uff0c\u6709\u5171\u9634\u548c\u5171\u9633\u4e24\u79cd\u63a5\u6cd5\uff0c\u4e0d\u540c\u7684\u63a5\u6cd5\u5bf9\u5e94\u7684\u7535\u8def\u7ed3\u6784\u4e0d\u540c\u3002
LED\u70b9\u9635\u5c4f\u9700\u8981\u8fdb\u884c\u9010\u884c\u6216\u9010\u5217\u626b\u63cf\uff0c\u624d\u80fd\u4f7f\u6240\u6709LED\u540c\u65f6\u663e\u793a\u3002<\/p>\n\n\n\n74HC595<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n
RCLK\uff1aregister clock, \u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u9501\u5b58\u3002
SRCLR: serial clear, \u4e32\u884c\u6e05\u96f6\uff0c\u4f4e\u7535\u5e73\u6709\u6548\u3002
SRCLK\uff1a\u4e32\u884c\u65f6\u949f\uff0c\u4e0a\u5347\u6cbf\u79fb\u4f4d\u3002
SER\uff1a\u4e32\u884c\u6570\u636e
QH’: \u591a\u7247\u7ea7\u8054\u3002<\/p>\n\n\n\nC51\u7684sfr\u3001sbit<\/h3>\n\n\n\n
DS1302\u4ecb\u7ecd<\/h2>\n\n\n\n
RTC(Real Time Clock)\uff1a\u5b9e\u65f6\u65f6\u949f\uff0c\u662f\u4e00\u79cd\u96c6\u6210\u7535\u8def\uff0c\u901a\u5e38\u79f0\u4e3a\u65f6\u949f\u82af\u7247\u3002
\u5355\u7247\u673a\u672c\u8eab\u65f6\u949f\u4e0d\u7cbe\u786e\u3001\u6d6a\u8d39CPU\u65f6\u95f4\u3001\u6389\u7535\u4e22\u5931\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5f15\u811a\u5b9a\u4e49\u548c\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5bc4\u5b58\u5668\u5b9a\u4e49<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u65f6\u5e8f\u5b9a\u4e49<\/h3>\n\n\n\n
<\/figure>\n\n\n\nBCD\u7801<\/h3>\n\n\n\n
\/\/20221202 DS1302\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\nsbit DS1302_SCLK=P3^6;\nsbit DS1302_IO=P3^4;\nsbit DS1302_CE=P3^5;\n\n#define DS1302_SECOND 0x80\n#define DS1302_MINUTE 0x82\n#define DS1302_HOUR 0x84\n#define DS1302_DATE 0x86\n#define DS1302_MONTH 0x88\n#define DS1302_DAY 0x8A\n#define DS1302_YEAR 0x8C\n#define DS1302_WP 0x8E\n\nunsigned char DS1302_Time[]={22,12,2,0,59,55,4}; \/\/\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u661f\u671f\n\nvoid DS1302_Init(void)\n{\n DS1302_CE=0;\n DS1302_SCLK=0;\n}\n\nvoid DS1302_WriteByte(unsigned char Command,Data)\n{\n unsigned char i;\n DS1302_CE=1;\n \n\n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Data&(0x01<<i);\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n }\n \n DS1302_CE=0;\n}\n\nunsigned char DS1302_ReadByte(unsigned char Command)\n{\n unsigned char i,Data=0x00;\n Command |= 0x01;\n DS1302_CE=1;\n \n for(i=0;i<8;i++)\n {\n DS1302_IO=Command&(0x01<<i);\n DS1302_SCLK=0;\n DS1302_SCLK=1;\n }\n \n for(i=0;i<8;i++)\n {\n DS1302_SCLK=1;\n DS1302_SCLK=0;\n if(DS1302_IO){Data|=(0x01<<i);}\n }\n DS1302_CE=0;\n DS1302_IO=0;\n return Data; \n}\n\nvoid DS1302_SetTime(void)\n{\n DS1302_WriteByte(DS1302_WP,0x00);\/\/\u5173\u95ed\u5199\u4fdd\u62a4\n DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]\/10*16+DS1302_Time[0]%10);\n DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]\/10*16+DS1302_Time[1]%10);\n DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]\/10*16+DS1302_Time[2]%10);\n DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]\/10*16+DS1302_Time[3]%10);\n DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]\/10*16+DS1302_Time[4]%10);\n DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]\/10*16+DS1302_Time[5]%10);\n DS1302_WriteByte(DS1302_DAY,DS1302_Time[6]\/10*16+DS1302_Time[6]%10);\n DS1302_WriteByte(DS1302_WP,0x00); \/\/\u6253\u5f00\u5199\u4fdd\u62a4\n}\n\nvoid DS1302_ReadTime(void)\n{\n unsigned char Temp;\n Temp=DS1302_ReadByte(DS1302_YEAR);\n DS1302_Time[0]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MONTH);\n DS1302_Time[1]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DATE);\n DS1302_Time[2]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_HOUR);\n DS1302_Time[3]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_MINUTE);\n DS1302_Time[4]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_SECOND);\n DS1302_Time[5]=Temp\/16*10+Temp%16;\n Temp=DS1302_ReadByte(DS1302_DAY);\n DS1302_Time[6]=Temp\/16*10+Temp%16;\n}<\/code><\/pre>\n\n\n\n\/\/main.c LCD1602\u663e\u793a\u65f6\u949f\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"DS1302.h\"\n#include \"Delay.h\"\n\nvoid main()\n{\n LCD_Init();\n DS1302_Init();\n \n LCD_ShowString(1,1,\" - -\");\n LCD_ShowString(2,1,\" : :\");\n \n DS1302_SetTime();\n\n\twhile(1)\n\t{\n\t DS1302_ReadTime();\n LCD_ShowNum(1,1,DS1302_Time[0],2);\n LCD_ShowNum(1,4,DS1302_Time[1],2);\n LCD_ShowNum(1,7,DS1302_Time[2],2);\n LCD_ShowNum(2,1,DS1302_Time[3],2);\n LCD_ShowNum(2,4,DS1302_Time[4],2);\n LCD_ShowNum(2,7,DS1302_Time[5],2);\n\t}\n}\n<\/code><\/pre>\n\n\n\n\u8702\u9e23\u5668<\/h2>\n\n\n\n
\u8702\u9e23\u5668\u6309\u9a71\u52a8\u65b9\u5f0f\u53ef\u5206\u4e3a\u6709\u6e90\u8702\u9e23\u5668\u548c\u65e0\u6e90\u8702\u9e23\u5668\u3002
\u6709\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u81ea\u5e26\u632f\u8361\u6e90\uff0c\u5c06\u6b63\u8d1f\u6781\u63a5\u4e0a\u76f4\u6d41\u7535\u538b\u5373\u53ef\u6301\u7eed\u53d1\u58f0\uff0c\u9891\u7387\u56fa\u5b9a\u3002
\u65e0\u6e90\u8702\u9e23\u5668\uff1a\u5185\u90e8\u4e0d\u5e26\u632f\u8361\u6e90\uff0c\u9700\u8981\u63a7\u5236\u5668\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u624d\u53ef\u53d1\u58f0\uff0c\u8c03\u6574\u63d0\u4f9b\u632f\u8361\u8109\u51b2\u7684\u9891\u7387\uff0c\u53ef\u53d1\u51fa\u4e0d\u540c\u9891\u7387\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n\u9a71\u52a8\u7535\u8def<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\nULN2003\u82af\u7247<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u4ecb\u7ecd<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\u5b58\u50a8\u5668\u7b80\u5316\u6a21\u578b<\/h3>\n\n\n\n
AT24C02\u4ecb\u7ecd<\/h2>\n\n\n\n
\u5b58\u50a8\u4ecb\u8d28\uff1aE2PROM\u3002
\u901a\u8baf\u63a5\u53e3\uff1aI2C\u603b\u7ebf\u3002
\u5bb9\u91cf\uff1a256\u5b57\u8282<\/p>\n\n\n\n<\/figure>\n\n\n\n\u5f15\u811a<\/strong><\/td> \u529f\u80fd<\/strong><\/td><\/tr> VCC\u3001GND<\/td> \u7535\u6e90\uff081.8V~5.5V \uff09<\/td><\/tr> WP<\/td> \u5199\u4fdd\u62a4\uff08\u9ad8\u7535\u5e73\u6709\u6548\uff09<\/td><\/tr> SCL\u3001SDA<\/td> I2C\u63a5\u53e3<\/td><\/tr> A0\u3001A1\u3001A2<\/td> I2C\u5730\u5740<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n <\/figure>\n\n\n\n\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n
I2C\u603b\u7ebf\u4ecb\u7ecd<\/h2>\n\n\n\n
\u4e24\u6839\u901a\u4fe1\u7ebf\ufe30SCL (Serial Clock) \u3001SDA(Serial Data)\u3002
\u540c\u6b65\u3001\u534a\u53cc\u5de5\uff0c\u5e26\u6570\u636e\u5e94\u7b54\u3002
\u901a\u7528\u7684I2C\u603b\u7ebf\uff0c\u53ef\u4ee5\u4f7f\u5404\u79cd\u8bbe\u5907\u7684\u901a\u4fe1\u6807\u51c6\u7edf\u4e00\uff0c\u5bf9\u4e8e\u5382\u5bb6\u6765\u8bf4\uff0c\u4f7f\u7528\u6210\u719f\u7684\u65b9\u6848\u53ef\u4ee5\u7f29\u77ed\u82af\u7247\u8bbe\u8ba1\u5468\u671f
\u63d0\u9ad8\u7a33\u5b9a\u6027\uff0c\u5bf9\u4e8e\u5e94\u7528\u8005\u6765\u8bf4\uff0c\u4f7f\u7528\u901a\u7528\u7684\u901a\u4fe1\u534f\u8bae\u53ef\u4ee5\u907f\u514d\u5b66\u4e60\u5404\u79cd\u5404\u6837\u7684\u81ea\u5b9a\u4e49\u534f\u8bae\uff0c\u964d\u4f4e\u4e86\u5b66\u4e60\u548c\u5e94\u7528\u7684\u96be\u5ea6\u3002\u4f7f\u7528\u6709\u4e13\u5229\u8d39\u3002<\/p>\n\n\n\nI2C\u7535\u8def\u89c4\u8303<\/h2>\n\n\n\n
\u8bbe\u5907\u7684SCL\u548cSDA\u5747\u8981\u914d\u7f6e\u6210\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002
SCL\u548cSDA\u5404\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7KQ\u5de6\u53f3\u3002
\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u7684\u5171\u540c\u4f5c\u7528\u5b9e\u73b0\u4e86\u201c\u7ebf\u4e0e”\u7684\u529f\u80fd\uff0c\u6b64\u8bbe\u8ba1\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u591a\u673a\u901a\u4fe1\u4e92\u76f8\u5e72\u6270\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nI2C\u65f6\u5e8f\u7ed3\u6784<\/h2>\n\n\n\n
\u8d77\u59cb\u6761\u4ef6<\/h3>\n\n\n\n
\u7ec8\u6b62\u6761\u4ef6<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u53d1\u9001\u5e94\u7b54 (Send Ack)<\/h3>\n\n\n\n
\u63a5\u6536\u5e94\u7b54\uff08Receive Ack\uff09<\/h3>\n\n\n\n
<\/figure>\n\n\n\nI2C\u6570\u636e\u5e27<\/h2>\n\n\n\n
\u53d1\u9001\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n
\u63a5\u6536\u4e00\u5e27\u6570\u636e<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5148\u53d1\u9001\u518d\u63a5\u6536\u6570\u636e\u5e27\uff08\u590d\u5408\u683c\u5f0f\uff09<\/h3>\n\n\n\n
<\/figure>\n\n\n\nAT24C02\u6570\u636e\u5e27<\/h2>\n\n\n\n
<\/figure>\n\n\n\n\/\/I2C.c 20221204\n#include <REGX52.H>\n\nsbit I2C_SCL=P2^1;\nsbit I2C_SDA=P2^0;\n\n\n\/**\n * @brief I2C\u5f00\u59cb\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Start(void)\n{\n I2C_SDA=1;\n I2C_SCL=1;\n I2C_SDA=0;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u505c\u6b62\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid I2C_Stop(void)\n{\n I2C_SDA=0;\n I2C_SCL=1;\n I2C_SDA=1;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte\u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid I2C_SendByte(unsigned char Byte)\n{\n unsigned char i;\n for(i=0;i<8;i++)\n {\n I2C_SDA=Byte&(0x80>>i);\n I2C_SCL=1;\n I2C_SCL=0;\n }\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u5230\u7684\u4e00\u4e2a\u5b57\u8282\u6570\u636e\n *\/\nunsigned char I2C_ReceiveByte(void)\n{\n unsigned char i, Byte=0x00;\n \n I2C_SDA=1;\n for(i=0;i<8;i++)\n {\n I2C_SCL=1;\n if(I2C_SDA==1){Byte|=(0x80>>i);}\n I2C_SCL=0;\n }\n\n return Byte;\n}\n\n\/**\n * @brief I2C\u53d1\u9001\u5e94\u7b54\n * @param AckBit\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n * @retval \u65e0\n *\/\nvoid I2C_SendAck(unsigned char AckBit) \/\/bit \u662fC51\u7279\u6709\u7684\u6570\u636e\u7c7b\u578b\n{\n I2C_SDA=AckBit;\n I2C_SCL=1;\n I2C_SCL=0;\n}\n\n\/**\n * @brief I2C\u63a5\u6536\u5e94\u7b54\u4f4d\n * @param \u65e0\n * @retval AckBit\u63a5\u6536\u5230\u7684\u5e94\u7b54\u4f4d\uff0c0\u4e3a\u5e94\u7b54\uff0c1\u4e3a\u975e\u5e94\u7b54\n *\/\nunsigned char I2C_ReceiveAck(void)\n{\n unsigned char AckBit;\n I2C_SDA=1;\n I2C_SCL=1;\n AckBit=I2C_SDA;\n I2C_SCL=0;\n return AckBit;\n}<\/code><\/pre>\n\n\n\n\/\/AT24C02.c 20221204\n#include <REGX52.H>\n#include \"I2C.h\"\n\n#define AT24C02_ADDRESS 0xA0\n\n\/**\n * @brief AT24C02\u5199\u5165\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u5199\u5165\u5b57\u8282\u7684\u5730\u5740\n * @param Data\u8981\u5199\u5165\u7684\u6570\u636e\n * @retval \u65e0\n *\/\nvoid AT24C02_WriteByte(unsigned char WordAddress,Data)\n{\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_SendByte(Data);\n I2C_ReceiveAck();\n I2C_Stop();\n}\n\n\/**\n * @brief AT24C02\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n * @param WordAddress\u8981\u8bfb\u51fa\u5b57\u8282\u7684\u5730\u5740\n * @retval \u8bfb\u51fa\u7684\u6570\u636e\n *\/\nunsigned char AT24C02_ReadByte(unsigned char WordAddress)\n{\n unsigned char Data;\n \n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS);\n I2C_ReceiveAck();\n I2C_SendByte(WordAddress);\n I2C_ReceiveAck();\n I2C_Start();\n I2C_SendByte(AT24C02_ADDRESS|0x01);\n I2C_ReceiveAck();\n Data=I2C_ReceiveByte();\n I2C_SendAck(1);\n I2C_Stop();\n \n return Data;\n}\n<\/code><\/pre>\n\n\n\n\/\/I2C AT24C02\u5b58\u5165\u5e76\u8bfb\u51fa\u4e00\u4e2a\u6570\u636e\n#include <REGX52.H>\n#include \"LCD1602.h\"\n#include \"Key.h\"\n#include \"AT24C02.h\"\n#include \"Delay.h\"\n\nunsigned char Data;\n\nvoid main()\n{\n LCD_Init();\n LCD_ShowString(1,1,\"Hello\");\n AT24C02_WriteByte(1,66); \/\/\u5730\u5740\u8303\u56f40~255\n Delayxms(5); \/\/\u5199\u5468\u671f\u4e3a5ms\uff0c\u5fc5\u987b\u7b49\u5f85\u4e00\u4e0b\n Data = AT24C02_ReadByte(1);\n \n LCD_ShowNum(2,1,Data,3);\n\twhile(1)\n\t{\n\t\t\n\t}\n}\n<\/code><\/pre>\n\n\n\nDS18B20\u6e29\u5ea6\u4f20\u611f\u5668<\/h2>\n\n\n\n
\u6d4b\u6e29\u8303\u56f4\uff1a-55\u00b0C \u5230 +125\u00b0C\u3002
\u901a\u4fe1\u63a5\u53e3\uff1a1-Wire\uff08\u5355\u603b\u7ebf\uff09\u3002
\u5176\u5b83\u7279\u5f81\uff1a\u53ef\u5f62\u6210\u603b\u7ebf\u7ed3\u6784\u3001\u5185\u7f6e\u6e29\u5ea6\u62a5\u8b66\u529f\u80fd\u3001\u53ef\u5bc4\u751f\u4f9b\u7535\uff08\u4e0d\u9700\u8981VCC\u4e5f\u53ef\u901a\u8fc7\u603b\u7ebf\u4f9b\u7535\uff09\u3002\u53ef\u4ee5\u5728\u4e00\u4e2a\u901a\u4fe1\u7ebf\u4e0a\u6302\u591a\u4e2a\u8bbe\u5907\u3002<\/p>\n\n\n\n\u5f15\u811a\u53ca\u5e94\u7528\u7535\u8def<\/h3>\n\n\n\n
\u5185\u90e8\u7ed3\u6784\u6846\u56fe<\/h3>\n\n\n\n
<\/figure>\n\n\n\n
SCRATCHPAD\uff08\u6682\u5b58\u5668\uff09\uff1a\u7528\u4e8e\u603b\u7ebf\u7684\u6570\u636e\u4ea4\u4e92\u3002
EEPROM\uff1a\u7528\u4e8e\u4fdd\u5b58\u6e29\u5ea6\u89e6\u53d1\u9608\u503c\u548c\u914d\u7f6e\u53c2\u6570\u3002<\/p>\n\n\n\n\u5b58\u50a8\u5668\u7ed3\u6784<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u4ecb\u7ecd<\/h3>\n\n\n\n
\u4e00\u6839\u901a\u4fe1\u7ebf\uff1aDQ\u3002
\u5f02\u6b65\u3001\u534a\u53cc\u5de5\u3002
\u5355\u603b\u7ebf\u53ea\u9700\u8981\u4e00\u6839\u901a\u4fe1\u7ebf\u5373\u53ef\u5b9e\u73b0\u6570\u636e\u7684\u53cc\u5411\u4f20\u8f93\uff0c\u5f53\u91c7\u7528\u5bc4\u751f\u4f9b\u7535\u65f6\uff0c\u8fd8\u53ef\u4ee5\u7701\u53bb\u8bbe\u5907\u7684VDD\u7ebf\u8def\uff0c\u6b64\u65f6\uff0c\u4f9b\u7535\u52a0\u901a\u4fe1\u53ea\u9700\u8981DQ\u548cGND\u4e24\u6839\u7ebf\u3002<\/p>\n\n\n\n\u5355\u603b\u7ebf\u7535\u8def\u89c4\u8303<\/h3>\n\n\n\n
DQ\u6dfb\u52a0\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b\uff0c\u963b\u503c\u4e00\u822c\u4e3a4.7K\u03a9\u5de6\u53f3\u3002
\u82e5\u6b64\u603b\u7ebf\u7684\u4ece\u673a\u91c7\u53d6\u5bc4\u751f\u4f9b\u7535\uff0c\u5219\u4e3b\u673a\u8fd8\u5e94\u914d\u4e00\u4e2a\u5f3a\u4e0a\u62c9\u8f93\u51fa\u7535\u8def\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u5355\u603b\u7ebf\u65f6\u5e8f\u7ed3\u6784<\/h3>\n\n\n\n
\u521d\u59cb\u5316<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4f4d<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u63a5\u6536\u4e00\u4f4d<\/h3>\n\n\n\n
<\/figure>\n\n\n\n\u53d1\u9001\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
\u63a5\u6536\u4e00\u4e2a\u5b57\u8282<\/h3>\n\n\n\n
DS18B20\u64cd\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n
ROM\u64cd\u4f5c\uff1aROM\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002
\u529f\u80fd\u64cd\u4f5c\uff1a\u529f\u80fd\u6307\u4ee4+\u672c\u6307\u4ee4\u9700\u8981\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<\/figure>\n\n\n\nDS18B20\u6570\u636e\u5e27<\/h2>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\u6e29\u5ea6\u5b58\u50a8\u683c\u5f0f<\/h3>\n\n\n\n
<\/figure>\n\n\n\n<\/figure>\n\n\n\n\/\/20221206\u5355\u603b\u7ebf\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n\n\/\/\u5f15\u811a\u5b9a\u4e49\nsbit OneWire_DQ=P3^7;\n\n\/**\n * @brief \u5355\u603b\u7ebf\u521d\u59cb\u5316\n * @param \u65e0\n * @retval \u4ece\u673a\u54cd\u5e94\u4f4d\uff0c0\u4e3a\u54cd\u5e94\uff0c1\u4e3a\u672a\u54cd\u5e94\n *\/\nunsigned char OneWire_Init(void)\n{\n\tunsigned char i;\n\tunsigned char AckBit;\n\tOneWire_DQ=1;\n\tOneWire_DQ=0;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\tOneWire_DQ=1;\n\ti = 32;while (--i);\t\t\t\/\/Delay 70us\n\tAckBit=OneWire_DQ;\n\ti = 247;while (--i);\t\t\/\/Delay 500us\n\treturn AckBit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4f4d\n * @param Bit \u8981\u53d1\u9001\u7684\u4f4d\n * @retval \u65e0\n *\/\nvoid OneWire_SendBit(unsigned char Bit)\n{\n\tunsigned char i;\n\tOneWire_DQ=0;\n\ti = 4;while (--i);\t\t\t\/\/Delay 10us\n\tOneWire_DQ=Bit;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\tOneWire_DQ=1;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4f4d\n * @param \u65e0\n * @retval \u8bfb\u53d6\u7684\u4f4d\n *\/\nunsigned char OneWire_ReceiveBit(void)\n{\n\tunsigned char i;\n\tunsigned char Bit;\n\tOneWire_DQ=0;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tOneWire_DQ=1;\n\ti = 2;while (--i);\t\t\t\/\/Delay 5us\n\tBit=OneWire_DQ;\n\ti = 24;while (--i);\t\t\t\/\/Delay 50us\n\treturn Bit;\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\n * @param Byte \u8981\u53d1\u9001\u7684\u5b57\u8282\n * @retval \u65e0\n *\/\nvoid OneWire_SendByte(unsigned char Byte)\n{\n\tunsigned char i;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tOneWire_SendBit(Byte&(0x01<<i));\n\t}\n}\n\n\/**\n * @brief \u5355\u603b\u7ebf\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\n * @param \u65e0\n * @retval \u63a5\u6536\u7684\u4e00\u4e2a\u5b57\u8282\n *\/\nunsigned char OneWire_ReceiveByte(void)\n{\n\tunsigned char i;\n\tunsigned char Byte=0x00;\n\tfor(i=0;i<8;i++)\n\t{\n\t\tif(OneWire_ReceiveBit()){Byte|=(0x01<<i);}\n\t}\n\treturn Byte;\n}\n<\/code><\/pre>\n\n\n\n\/\/20221206 DS18B20\u6e29\u5ea6\u4f20\u611f\u5668\u76f8\u5173\u51fd\u6570\n#include <REGX52.H>\n#include \"OneWire.h\"\n\n\/\/DS18B20\u6307\u4ee4\n#define DS18B20_SKIP_ROM\t\t\t0xCC\n#define DS18B20_CONVERT_T\t\t\t0x44\n#define DS18B20_READ_SCRATCHPAD \t0xBE\n\n\/**\n * @brief DS18B20\u5f00\u59cb\u6e29\u5ea6\u53d8\u6362\n * @param \u65e0\n * @retval \u65e0\n *\/\nvoid DS18B20_ConvertT(void)\n{\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_CONVERT_T);\n}\n\n\/**\n * @brief DS18B20\u8bfb\u53d6\u6e29\u5ea6\n * @param \u65e0\n * @retval \u6e29\u5ea6\u6570\u503c\n *\/\nfloat DS18B20_ReadT(void)\n{\n\tunsigned char TLSB,TMSB;\n\tint Temp;\n\tfloat T;\n\tOneWire_Init();\n\tOneWire_SendByte(DS18B20_SKIP_ROM);\n\tOneWire_SendByte(DS18B20_READ_SCRATCHPAD);\n\tTLSB=OneWire_ReceiveByte();\n\tTMSB=OneWire_ReceiveByte();\n\tTemp=(TMSB<<8)|TLSB;\n\tT=Temp\/16.0;\n\treturn T;\n}\n<\/code><\/pre>\n\n\n\nLCD1602<\/h2>\n\n\n\n