{"id":1968,"date":"2022-12-11T11:52:24","date_gmt":"2022-12-11T03:52:24","guid":{"rendered":"https:\/\/www.lcettsg.cn\/code\/?p=1968"},"modified":"2022-12-11T11:52:26","modified_gmt":"2022-12-11T03:52:26","slug":"%e6%b5%85%e8%b0%88apb1%e3%80%81apb2","status":"publish","type":"post","link":"https:\/\/www.lcettsg.cn\/code\/?p=1968","title":{"rendered":"\u6d45\u8c08APB1\u3001APB2"},"content":{"rendered":"\n<p>\u5728STM32\u521d\u59cb\u5316IO\u7684\u65f6\u5019\uff0c\u9996\u5148\u8981\u521d\u59cb\u5316IO\u7684\u65f6\u949f,\u8fd9\u91cc\u9762\u6709\u4e24\u79cd\u65f6\u949f\uff1aAPB1ENR\u3001APB2ENR\u3002\u4e24\u4e2a\u4ece\u5b57\u9762\u4e0a\u770b\u90fd\u662f Advanced Periphery Bus Enable\uff0c\u4e0d\u540c\u4e4b\u5904\u4e00\u4e2a\u662f1 \uff0c\u4e00\u4e2a\u662f2\u3002\u533a\u522b\u5728\u54ea\u91cc\uff1fIO\u521d\u59cb\u5316\u7684\u5e94\u8be5\u6839\u636e\u9700\u8981\u5f00\u542f\u54ea\u4e2a\u65f6\u949f\uff1f<\/p>\n\n\n\n<p>APB1\u5916\u8bbe\u65f6\u949f\u4f7f\u80fd\u5bc4\u5b58\u5668(RCC_APB1ENR) \u4f4e\u901fAPB\u4f7f\u80fd\uff0c\u6700\u5927\u5141\u8bb8\u9891\u738736MHz\u3002<\/p>\n\n\n\n<p>APB2\u5916\u8bbe\u65f6\u949f\u4f7f\u80fd\u5bc4\u5b58\u5668(RCC_APB2ENR) \u9ad8\u901fAPB\u4f7f\u80fd\uff0c\u6700\u5927\u5141\u8bb8\u9891\u738772MHz\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684\u5916\u8bbe\u662f\u76f8\u5bf9Cortex M3\u7684\u5185\u6838\u6765\u8bb2\u7684\u3002\u8fd9\u4e24\u4e2a\u5bc4\u5b58\u5668\u90fd\u662f32\u7684\uff0c\u5360\u7528\u56db\u4e2a\u5b57\u8282\u3002<\/p>\n\n\n\n<p> APB1\u5916\u8bbe\u65f6\u949f\u4f7f\u80fd\u5bc4\u5b58\u5668\u7684\u53ef\u7528\u4f4d\u4e3a20\u4f4d\uff0c\u8fd9\u4e9b\u90fd\u662fR\/W\uff0c\u5bf9\u5e94\u7684\u201c\u5916\u8bbe\u201d\u65f6\u949f\u6709\uff1a(1)DAC\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd \uff0c(2)\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(3)\u5907\u4efd\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(4\u30015)Can 2\u548cCan1 \u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(6\u30017)IIC2\u548cIIC1\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(8\u30019\u300110\u300111)USART 5\u3001USART4\u3001USART3\u3001USART2\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(12\u300113)SPI3\u548cSPI2\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(14) \u7a97\u53e3\u770b\u95e8\u72d7\u65f6\u949f\u4f7f\u80fd,(15-20) -7\u65f6\u949f\u4f7f\u80fd\uff0c\u53ef\u4ee5\u770b\u5f97\u51fa\uff0c\u4e00\u4e2a\u4f4d\u5bf9\u5e94\u4e00\u4e2a\u201c\u5916\u8bbe\u201d\uff0c0\u5173\u95ed\uff0c1\u6253\u5f00\u3002     <\/p>\n\n\n\n<p>APB2\u5916\u8bbe\u65f6\u949f\u4f7f\u80fd\u5bc4\u5b58\u5668\uff0c\u5728\u8dd1\u9a6c\u706f\u7a0b\u5e8f\u7684IO_Configration\u51fd\u6570\u521d\u59cb\u5316\u7684\u7b2c\u4e00\u4e2a\u5bc4\u5b58\u5668\u5c31\u662f\u5b83\u3002\u8bf4\u660e\u4e00\u4e0b\uff0c\u8fd9\u4e24\u4e2a\u5bc4\u5b58\u5668\u90fd\u4f4d\u4e8e\u7ed3\u6784\u4f53RCC_TypeDef\u4e2d, \u540d\u5b57\u53ebAPB1ENR\u548cAPB2ENR\u3002\u64cd\u4f5c\u7684\u65f6\u5019\u5c31\u662f RCC->APB1ENR=xxxxxxxx\uff0c\u8fd9\u91cc\u662f\u4e3e\u4e2a\u4f8b\u5b50\u3002\u540c\u6837\u8fd9\u4e2a\u5bc4\u5b58\u5668\u548c\u4e0a\u9762\u76841\u4e0d\u4e00\u6837\uff0c\u5b83\u53ea\u670911\u4e2abit\u6709\u6548\uff0c\u5176\u4f59\u7684bit\u4fdd\u7559(\u4fdd\u7559\u4f4d\u8bfb\u4e3a0)\uff0c\u5f00\u653e\u51fa\u6765\u7684bit\u90fd\u662fR\/W(\u53ef\u8bfb\u53ef\u5199\u7684)\u3002\u8fd9\u4e9b\u5916\u8bbe\u90fd\u662f\uff1a(1)USART1\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(2)SPI1\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd (3)\u5b9a\u65f6\u56681\u65f6\u949f\u4f7f\u80fd\uff0c(4\u30015)ADC2 \u548cADC1\u63a5\u53e3\u65f6\u949f\u4f7f\u80fd\uff0c(6-10)\u7aef\u53e3A-E\u65f6\u949f\u4f7f\u80fd\uff0c(11)\u8f85\u52a9\u529f\u80fdIO\u65f6\u949f\u4f7f\u80fd\u3002\u53ef\u4ee5\u770b\u5f97\u51fa\uff0c\u4e5f\u662f\u4e00\u4e2a\u4f4d\u5bf9\u5e94\u4e00\u4e2a\u5916\u8bbe\uff0c1\u6253\u5f00\uff0c0\u5173\u6389\u3002<\/p>\n\n\n\n<p>example\uff1a\u4f7f\u80fd\u7aef\u53e3A\u3001C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>   RCC-&gt;APB2ENR|=1&lt;&lt;2; \/\/\u4f7f\u80fdPORTA\u65f6\u949f\n\n   RCC-&gt;APB2ENR|=1&lt;&lt;4; \/\/\u4f7f\u80fdPORTC\u65f6\u949f<\/code><\/pre>\n\n\n\n<p>\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<br>\u7248\u6743\u58f0\u660e\uff1a\u672c\u6587\u4e3aCSDN\u535a\u4e3b\u300cLeo_wh\u300d\u7684\u539f\u521b\u6587\u7ae0\uff0c\u9075\u5faaCC 4.0 BY-SA\u7248\u6743\u534f\u8bae\uff0c\u8f6c\u8f7d\u8bf7\u9644\u4e0a\u539f\u6587\u51fa\u5904\u94fe\u63a5\u53ca\u672c\u58f0\u660e\u3002<br>\u539f\u6587\u94fe\u63a5\uff1ahttps:\/\/blog.csdn.net\/qq_38716211\/article\/details\/86564127<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728STM32\u521d\u59cb\u5316IO\u7684\u65f6\u5019\uff0c\u9996\u5148\u8981\u521d\u59cb\u5316IO\u7684\u65f6\u949f,\u8fd9\u91cc\u9762\u6709\u4e24\u79cd\u65f6\u949f\uff1aAPB1ENR\u3001APB2ENR\u3002\u4e24\u4e2a\u4ece [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-1968","post","type-post","status-publish","format-standard","hentry","category-14"],"_links":{"self":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/1968"}],"collection":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1968"}],"version-history":[{"count":1,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/1968\/revisions"}],"predecessor-version":[{"id":1969,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/1968\/revisions\/1969"}],"wp:attachment":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}