{"id":40749,"date":"2023-10-05T22:45:19","date_gmt":"2023-10-05T14:45:19","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=40749"},"modified":"2023-10-05T22:45:19","modified_gmt":"2023-10-05T14:45:19","slug":"sdpjckjsd","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/40749.html","title":{"rendered":"STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA"},"content":{"rendered":"

  STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\uff08Direct Memory Access\uff09\u662f\u4e00\u79cd\u6570\u636e\u4f20\u8f93\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5728\u5355\u7247\u673a\u4e32\u53e3\u4e4b\u95f4\u8fdb\u884c\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u3002\u5b83\u80fd\u591f\u5b9e\u73b0\u5feb\u901f\u3001\u7a33\u5b9a\u7684\u6570\u636e\u4f20\u8f93\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u3002\u672c\u6587\u5c06\u4ecb\u7ecdSTC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u7684\u539f\u7406\u3001\u7279\u70b9\u4ee5\u53ca\u5e94\u7528\u3002<\/p>\n

STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u539f\u7406<\/h2>\n

  STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u662f\u4e00\u79cd\u786c\u4ef6\u5b9e\u73b0\u7684\u6570\u636e\u4f20\u8f93\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5728\u5355\u7247\u673a\u4e32\u53e3\u4e4b\u95f4\u8fdb\u884c\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u3002\u5b83\u7684\u539f\u7406\u662f\u5c06\u6570\u636e\u4ece\u4e00\u4e2a\u5730\u5740\u4f20\u8f93\u5230\u53e6\u4e00\u4e2a\u5730\u5740\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u4f20\u8f93\u901f\u5ea6\u3002<\/p>\n

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

  DMA\u7684\u5de5\u4f5c\u539f\u7406\u662f\uff0c\u5f53\u5355\u7247\u673a\u4e32\u53e3\u53d1\u51fa\u6570\u636e\u65f6\uff0cDMA\u4f1a\u628a\u6570\u636e\u4ece\u53d1\u9001\u7aef\u7684\u5730\u5740\u4f20\u8f93\u5230\u63a5\u6536\u7aef\u7684\u5730\u5740\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u4f20\u8f93\u901f\u5ea6\u3002<\/p>\n

  DMA\u7684\u4f18\u70b9<\/h3>\n

  DMA\u7684\u4f18\u70b9\u662f\uff0c\u5b83\u6bd4\u4f20\u7edf\u7684\u6570\u636e\u4f20\u8f93\u6280\u672f\u66f4\u5feb\u3001\u66f4\u7a33\u5b9a\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u3002\u540c\u65f6\uff0c\u5b83\u8fd8\u80fd\u591f\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n

STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u7279\u70b9<\/h2>\n

  STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u7684\u7279\u70b9\u662f\uff0c\u5b83\u7684\u4f20\u8f93\u901f\u5ea6\u6bd4\u4f20\u7edf\u7684\u6570\u636e\u4f20\u8f93\u6280\u672f\u66f4\u5feb\u3001\u66f4\u7a33\u5b9a\uff0c\u800c\u4e14\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n

  DMA\u7684\u7075\u6d3b\u6027<\/h3>\n

  DMA\u7684\u7075\u6d3b\u6027\u5f88\u5f3a\uff0c\u5b83\u53ef\u4ee5\u5b9e\u73b0\u4ece\u4e00\u4e2a\u5730\u5740\u5230\u53e6\u4e00\u4e2a\u5730\u5740\u7684\u6570\u636e\u4f20\u8f93\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\u3002<\/p>\n

  DMA\u7684\u53ef\u9760\u6027<\/h3>\n

  DMA\u7684\u53ef\u9760\u6027\u5f88\u9ad8\uff0c\u5b83\u53ef\u4ee5\u5b9e\u73b0\u5feb\u901f\u3001\u7a33\u5b9a\u7684\u6570\u636e\u4f20\u8f93\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u3002<\/p>\n

STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u5e94\u7528<\/h2>\n

  STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5e94\u7528\u573a\u666f\uff0c\u5982\u5b9e\u65f6\u89c6\u9891\u4f20\u8f93\u3001\u5b9e\u65f6\u97f3\u9891\u4f20\u8f93\u3001\u6570\u636e\u91c7\u96c6\u3001\u6570\u636e\u5904\u7406\u7b49\u3002<\/p>\n

  \u5b9e\u65f6\u89c6\u9891\u4f20\u8f93<\/h3>\n

  \u4f7f\u7528STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u53ef\u4ee5\u5b9e\u73b0\u5b9e\u65f6\u89c6\u9891\u4f20\u8f93\uff0c\u53ef\u4ee5\u63d0\u9ad8\u89c6\u9891\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

  \u5b9e\u65f6\u97f3\u9891\u4f20\u8f93<\/h3>\n

  \u4f7f\u7528STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u53ef\u4ee5\u5b9e\u73b0\u5b9e\u65f6\u97f3\u9891\u4f20\u8f93\uff0c\u53ef\u4ee5\u63d0\u9ad8\u97f3\u9891\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

  \u6570\u636e\u91c7\u96c6<\/h3>\n

  \u4f7f\u7528STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u53ef\u4ee5\u5b9e\u73b0\u6570\u636e\u91c7\u96c6\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u91c7\u96c6\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

  \u6570\u636e\u5904\u7406<\/h3>\n

  \u4f7f\u7528STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u53ef\u4ee5\u5b9e\u73b0\u6570\u636e\u5904\u7406\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5904\u7406\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u672c\u6587\u4ecb\u7ecd\u4e86STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\u7684\u539f\u7406\u3001\u7279\u70b9\u4ee5\u53ca\u5e94\u7528\u3002<\/strong>\u5b83\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\uff0c\u800c\u4e14\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5e94\u7528\u573a\u666f\uff0c\u5982\u5b9e\u65f6\u89c6\u9891\u4f20\u8f93\u3001\u5b9e\u65f6\u97f3\u9891\u4f20\u8f93\u3001\u6570\u636e\u91c7\u96c6\u3001\u6570\u636e\u5904\u7406\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

STC8A8K\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6536DMA\uff08DirectMemoryAccess\uff09\u662f\u4e00\u79cd\u6570\u636e\u4f20\u8f93\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u5728\u5355\u7247\u673a\u4e32\u53e3\u4e4b\u95f4\u8fdb\u884c\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u3002\u5b83\u80fd\u591f\u5b9e\u73b0\u5feb\u901f\u3001\u7a33\u5b9a\u7684\u6570\u636e\u4f20\u8f93\uff0c<\/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-40749","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\/40749","targetHints":{"allow":["GET"]}}],"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=40749"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/40749\/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=40749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=40749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=40749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}