{"id":40886,"date":"2023-10-03T06:55:22","date_gmt":"2023-10-02T22:55:22","guid":{"rendered":"\/\/www.viralrail.com\/?p=40886"},"modified":"2023-10-03T06:55:22","modified_gmt":"2023-10-02T22:55:22","slug":"sydjssjcsck","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/40886.html","title":{"rendered":"\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3"},"content":{"rendered":"<p>&emsp;&emsp;DMA\uff08Direct Memory Access\uff09\u662f\u4e00\u79cd\u5feb\u901f\u5730\u4ece\u5b58\u50a8\u5668\u4e2d\u628a\u6570\u636e\u76f4\u63a5\u4f20\u8f93\u5230\u5916\u8bbe\u7684\u6280\u672f\u3002\u5b83\u53ef\u4ee5\u5927\u5927\u51cf\u5c11CPU\u7684\u5de5\u4f5c\u91cf\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u3002\u800cSPI\uff08Serial Peripheral Interface\uff09\u662f\u4e00\u79cd\u4e32\u884c\u63a5\u53e3\uff0c\u5b83\u53ef\u4ee5\u8ba9\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u8fdb\u884c\u5feb\u901f\u7684\u6570\u636e\u4f20\u8f93\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3\u3002<\/p>\n<h2 style=\"text-align: center;\">\u4ec0\u4e48\u662fDMA\uff1f<\/h2>\n<p>&emsp;&emsp;DMA\u662f\u4e00\u79cd\u7531\u786c\u4ef6\u5b8c\u6210\u7684\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u76f4\u63a5\u4ece\u5b58\u50a8\u5668\u4e2d\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\uff0c\u800c\u65e0\u9700CPU\u7684\u53c2\u4e0e\u3002\u5b83\u53ef\u4ee5\u5927\u5927\u51cf\u5c11CPU\u7684\u5de5\u4f5c\u91cf\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u3002<\/p>\n<h3>&emsp;&emsp;DMA\u7684\u4f18\u70b9<\/h3>\n<ul>\n<li>DMA\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u51cf\u5c11CPU\u7684\u5de5\u4f5c\u91cf\u3002<\/li>\n<li>DMA\u53ef\u4ee5\u5728\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u5b9e\u73b0\u5feb\u901f\u7684\u6570\u636e\u4f20\u8f93\u3002<\/li>\n<li>DMA\u53ef\u4ee5\u8282\u7701\u5185\u5b58\uff0c\u51cf\u5c11\u5185\u5b58\u7684\u62f7\u8d1d\u6b21\u6570\u3002<\/li>\n<li>DMA\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/li>\n<\/ul>\n<h2 style=\"text-align: center;\">\u4ec0\u4e48\u662fSPI\uff1f<\/h2>\n<p>&emsp;&emsp;SPI\u662f\u4e00\u79cd\u4e32\u884c\u63a5\u53e3\uff0c\u5b83\u53ef\u4ee5\u8ba9\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u8fdb\u884c\u5feb\u901f\u7684\u6570\u636e\u4f20\u8f93\u3002SPI\u63a5\u53e3\u7684\u4e3b\u8981\u7279\u70b9\u662f\u652f\u6301\u9ad8\u901f\u6570\u636e\u4f20\u8f93\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8f83\u9ad8\u7684\u5e26\u5bbd\uff0c\u5e76\u4e14\u53ef\u4ee5\u652f\u6301\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002<\/p>\n<h3>&emsp;&emsp;SPI\u7684\u4f18\u70b9<\/h3>\n<ul>\n<li>SPI\u53ef\u4ee5\u652f\u6301\u9ad8\u901f\u6570\u636e\u4f20\u8f93\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8f83\u9ad8\u7684\u5e26\u5bbd\u3002<\/li>\n<li>SPI\u63a5\u53e3\u53ef\u4ee5\u652f\u6301\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002<\/li>\n<li>SPI\u63a5\u53e3\u53ef\u4ee5\u8282\u7701\u786c\u4ef6\u8d44\u6e90\uff0c\u51cf\u5c11\u82af\u7247\u7684\u6210\u672c\u3002<\/li>\n<li>SPI\u63a5\u53e3\u53ef\u4ee5\u51cf\u5c11\u7cfb\u7edf\u7684\u590d\u6742\u5ea6\uff0c\u7b80\u5316\u7cfb\u7edf\u7684\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<h2 style=\"text-align: center;\">\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3<\/h2>\n<p>&emsp;&emsp;\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3\u7684\u8fc7\u7a0b\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06SPI\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u7f13\u51b2\u533a\u914d\u7f6e\u4e3aDMA\u6a21\u5f0f\uff0c\u7136\u540e\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\u3002<\/p>\n<h3>&emsp;&emsp;\u6b65\u9aa4\u4e00\uff1a\u914d\u7f6eSPI\u7684\u6570\u636e\u4f20\u8f93\u7f13\u51b2\u533a<\/h3>\n<p>&emsp;&emsp;\u9996\u5148\uff0c\u9700\u8981\u914d\u7f6eSPI\u7684\u6570\u636e\u4f20\u8f93\u7f13\u51b2\u533a\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3aDMA\u6a21\u5f0f\u3002\u8fd9\u6837\uff0c\u5728\u4f20\u8f93\u6570\u636e\u65f6\uff0cSPI\u63a5\u53e3\u5c31\u53ef\u4ee5\u4f7f\u7528DMA\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002<\/p>\n<h3>&emsp;&emsp;\u6b65\u9aa4\u4e8c\uff1a\u914d\u7f6eDMA<\/h3>\n<p>&emsp;&emsp;\u63a5\u4e0b\u6765\uff0c\u9700\u8981\u914d\u7f6eDMA\uff0c\u5c06SPI\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u7f13\u51b2\u533a\u914d\u7f6e\u4e3aDMA\u6a21\u5f0f\uff0c\u5e76\u5c06DMA\u7684\u76ee\u6807\u5730\u5740\u8bbe\u7f6e\u4e3a\u4e32\u53e3\u7684\u5730\u5740\u3002\u8fd9\u6837\uff0cDMA\u5c31\u53ef\u4ee5\u5c06SPI\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\u3002<\/p>\n<h3>&emsp;&emsp;\u6b65\u9aa4\u4e09\uff1a\u542f\u52a8DMA\u4f20\u8f93<\/h3>\n<p>&emsp;&emsp;\u6700\u540e\uff0c\u9700\u8981\u542f\u52a8DMA\u4f20\u8f93\uff0c\u5c06SPI\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\u3002\u8fd9\u6837\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5c06SPI\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\u7684\u529f\u80fd\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3\u3002<\/strong>DMA\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u51cf\u5c11CPU\u7684\u5de5\u4f5c\u91cf\uff0c\u800cSPI\u63a5\u53e3\u53ef\u4ee5\u652f\u6301\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u4e32\u53e3\u7684\u8fc7\u7a0b\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06SPI\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u7f13\u51b2\u533a\u914d\u7f6e\u4e3aDMA\u6a21\u5f0f\uff0c\u7136\u540e\u4f7f\u7528DMA\u5c06SPI\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u5c06SPI\u6570\u636e\u4f20\u8f93\u5230\u4e32\u53e3\u7684\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DMA\uff08DirectMemoryAccess\uff09\u662f\u4e00\u79cd\u5feb\u901f\u5730\u4ece\u5b58\u50a8\u5668\u4e2d\u628a\u6570\u636e\u76f4\u63a5\u4f20\u8f93\u5230\u5916\u8bbe\u7684\u6280\u672f\u3002\u5b83\u53ef\u4ee5\u5927\u5927\u51cf\u5c11CPU\u7684\u5de5\u4f5c\u91cf\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u3002\u800cSPI\uff08Seria<\/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-40886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-cktx"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/40886"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=40886"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/40886\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=40886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=40886"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=40886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}