{"id":46271,"date":"2023-09-29T21:10:51","date_gmt":"2023-09-29T13:10:51","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=46271"},"modified":"2023-09-29T21:10:51","modified_gmt":"2023-09-29T13:10:51","slug":"sckdjs-2","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/46271.html","title":{"rendered":"SYM32F767\u4e32\u53e3DMA\u63a5\u6536"},"content":{"rendered":"

  SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u662f\u4e00\u79cd\u975e\u5e38\u7075\u6d3b\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5b9e\u73b0\u590d\u6742\u7684\u6570\u636e\u4f20\u8f93\uff0c\u5e76\u4e14\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11CPU\u7684\u8d1f\u8f7d\u3002\u672c\u6587\u5c06\u4ecb\u7ecdSYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u539f\u7406\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u6765\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n

SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u539f\u7406<\/h2>\n

  SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u539f\u7406\u662f\u5229\u7528DMA\uff08Direct Memory Access\uff09\u6280\u672f\uff0c\u5c06\u4e32\u53e3\u63a5\u6536\u7684\u6570\u636e\u76f4\u63a5\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\u3002DMA\u6280\u672f\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u8f7d\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n

  DMA\u6280\u672f\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n

  DMA\u6280\u672f\u7684\u5de5\u4f5c\u539f\u7406\u662f\uff0c\u5f53CPU\u6536\u5230\u4e00\u4e2aDMA\u8bf7\u6c42\u65f6\uff0c\u5b83\u4f1a\u628a\u8bf7\u6c42\u7684\u6570\u636e\u76f4\u63a5\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\u3002\u8fd9\u6837\uff0cCPU\u5c31\u53ef\u4ee5\u8282\u7701\u5927\u91cf\u7684\u65f6\u95f4\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n

  SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u4f18\u52bf<\/h3>\n

  SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u4f18\u52bf\u5728\u4e8e\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11CPU\u7684\u8d1f\u8f7d\uff0c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u53e6\u5916\uff0c\u5b83\u8fd8\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5b9e\u73b0\u590d\u6742\u7684\u6570\u636e\u4f20\u8f93\uff0c\u4ece\u800c\u66f4\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528SYM32F767\u4e32\u53e3DMA\u63a5\u6536<\/h2>\n

  SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u6765\u5b9e\u73b0\uff1a<\/p>\n

  \u6b65\u9aa4\u4e00\uff1a\u914d\u7f6eDMA\u63a7\u5236\u5668<\/h3>\n

  \u9996\u5148\uff0c\u7528\u6237\u9700\u8981\u914d\u7f6eDMA\u63a7\u5236\u5668\uff0c\u4ee5\u4fbf\u5b83\u53ef\u4ee5\u63a5\u6536\u4e32\u53e3\u6570\u636e\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eDMA\u63a7\u5236\u5668\u7684\u6e90\u5730\u5740\u3001\u76ee\u6807\u5730\u5740\u548c\u4f20\u8f93\u5b57\u8282\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n

  \u6b65\u9aa4\u4e8c\uff1a\u542f\u52a8DMA\u4f20\u8f93<\/h3>\n

  \u63a5\u4e0b\u6765\uff0c\u7528\u6237\u9700\u8981\u542f\u52a8DMA\u4f20\u8f93\uff0c\u4ee5\u4fbf\u6570\u636e\u53ef\u4ee5\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eDMA\u63a7\u5236\u5668\u7684\u4f20\u8f93\u6a21\u5f0f\u6765\u5b9e\u73b0\u3002<\/p>\n

  \u6b65\u9aa4\u4e09\uff1a\u68c0\u67e5DMA\u4f20\u8f93\u72b6\u6001<\/h3>\n

  \u6700\u540e\uff0c\u7528\u6237\u9700\u8981\u68c0\u67e5DMA\u4f20\u8f93\u7684\u72b6\u6001\uff0c\u4ee5\u4fbf\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u6210\u529f\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eDMA\u63a7\u5236\u5668\u7684\u4f20\u8f93\u72b6\u6001\u4f4d\u6765\u5b9e\u73b0\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u672c\u6587\u4ecb\u7ecd\u4e86SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u7684\u539f\u7406\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u6765\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/strong>SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11CPU\u7684\u8d1f\u8f7d\uff0c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u53e6\u5916\uff0c\u5b83\u8fd8\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5b9e\u73b0\u590d\u6742\u7684\u6570\u636e\u4f20\u8f93\uff0c\u4ece\u800c\u66f4\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

SYM32F767\u4e32\u53e3DMA\u63a5\u6536\u662f\u4e00\u79cd\u975e\u5e38\u7075\u6d3b\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5b9e\u73b0\u590d\u6742\u7684\u6570\u636e\u4f20\u8f93\uff0c\u5e76\u4e14\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11CPU\u7684\u8d1f\u8f7d\u3002\u672c\u6587\u5c06\u4ecb\u7ecdSYM32F<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[69],"class_list":["post-46271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-cktx"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/46271"}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=46271"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/46271\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=46271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=46271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=46271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}