{"id":41540,"date":"2023-10-04T23:05:50","date_gmt":"2023-10-04T15:05:50","guid":{"rendered":"\/\/www.viralrail.com\/?p=41540"},"modified":"2023-10-04T23:05:50","modified_gmt":"2023-10-04T15:05:50","slug":"hyzgxdusjcsfs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/41540.html","title":{"rendered":"HAL_UART_Transmit_DMA\uff1a\u4e00\u79cd\u9ad8\u6548\u7684UART\u6570\u636e\u4f20\u8f93\u65b9\u5f0f"},"content":{"rendered":"

  HAL_UART_Transmit_DMA\u662f\u4e00\u79cd\u9ad8\u6548\u7684UART\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u8282\u7701\u5927\u91cf\u7684\u65f6\u95f4\u548c\u8d44\u6e90\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002\u5b83\u4f7f\u7528\u4e86\u786c\u4ef6DMA\uff08Direct Memory Access\uff09\u6765\u5b9e\u73b0UART\u6570\u636e\u4f20\u8f93\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u4e0d\u9700\u8981CPU\u53c2\u4e0e\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0UART\u6570\u636e\u4f20\u8f93\uff0c\u4ece\u800c\u5927\u5927\u8282\u7701\u4e86\u5f00\u53d1\u8005\u7684\u65f6\u95f4\u548c\u8d44\u6e90\u3002<\/p>\n

HAL_UART_Transmit_DMA\u7684\u4f18\u52bf<\/h2>\n

  HAL_UART_Transmit_DMA\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u8282\u7701\u5f00\u53d1\u8005\u7684\u65f6\u95f4\u548c\u8d44\u6e90\uff0c\u4ece\u800c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002\u5b83\u7684\u4f18\u52bf\u6709\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n

  1.\u53ef\u4ee5\u8282\u7701CPU\u8d44\u6e90<\/h3>\n

  HAL_UART_Transmit_DMA\u4f7f\u7528\u786c\u4ef6DMA\u6765\u5b9e\u73b0UART\u6570\u636e\u4f20\u8f93\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u4e0d\u9700\u8981CPU\u53c2\u4e0e\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0UART\u6570\u636e\u4f20\u8f93\uff0c\u4ece\u800c\u8282\u7701CPU\u8d44\u6e90\u3002<\/p>\n

  2.\u53ef\u4ee5\u8282\u7701\u7a0b\u5e8f\u4ee3\u7801\u91cf<\/h3>\n

  HAL_UART_Transmit_DMA\u7684\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u662f\u5b8c\u5168\u7531\u786c\u4ef6\u6765\u5b8c\u6210\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8282\u7701\u5927\u91cf\u7684\u7a0b\u5e8f\u4ee3\u7801\uff0c\u4f7f\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u66f4\u591a\u7684\u7cbe\u529b\u653e\u5728\u5176\u4ed6\u66f4\u91cd\u8981\u7684\u7a0b\u5e8f\u5f00\u53d1\u4efb\u52a1\u4e0a\u3002<\/p>\n

  3.\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u6267\u884c\u6548\u7387<\/h3>\n

  HAL_UART_Transmit_DMA\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\uff0c\u56e0\u4e3a\u5b83\u4f7f\u7528\u786c\u4ef6DMA\u6765\u5b9e\u73b0UART\u6570\u636e\u4f20\u8f93\uff0c\u53ef\u4ee5\u6bd4\u8f6f\u4ef6\u5b9e\u73b0\u7684UART\u6570\u636e\u4f20\u8f93\u66f4\u5feb\u5730\u5b8c\u6210\u4efb\u52a1\u3002<\/p>\n

HAL_UART_Transmit_DMA\u7684\u7f3a\u70b9<\/h2>\n

  HAL_UART_Transmit_DMA\u4e5f\u6709\u4e00\u4e9b\u7f3a\u70b9\u3002\u5176\u4e2d\u6700\u4e3b\u8981\u7684\u7f3a\u70b9\u662f\uff0c\u5b83\u53ea\u80fd\u7528\u4e8e\u7279\u5b9a\u7684\u786c\u4ef6\u73af\u5883\uff0c\u5e76\u4e14\u9700\u8981\u82b1\u8d39\u8f83\u591a\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u914d\u7f6e\u786c\u4ef6\uff0c\u4ee5\u4fbf\u80fd\u591f\u6b63\u786e\u5730\u4f7f\u7528\u5b83\u3002<\/p>\n

  1.\u53ea\u80fd\u7528\u4e8e\u7279\u5b9a\u7684\u786c\u4ef6\u73af\u5883<\/h3>\n

  HAL_UART_Transmit_DMA\u53ea\u80fd\u7528\u4e8e\u7279\u5b9a\u7684\u786c\u4ef6\u73af\u5883\uff0c\u5982\u679c\u5f00\u53d1\u8005\u60f3\u8981\u5728\u4e0d\u540c\u7684\u786c\u4ef6\u73af\u5883\u4e0b\u4f7f\u7528\u5b83\uff0c\u5219\u5fc5\u987b\u91cd\u65b0\u914d\u7f6e\u786c\u4ef6\uff0c\u4ee5\u4fbf\u80fd\u591f\u6b63\u786e\u5730\u4f7f\u7528\u5b83\u3002<\/p>\n

  2.\u9700\u8981\u82b1\u8d39\u8f83\u591a\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u914d\u7f6e\u786c\u4ef6<\/h3>\n

  HAL_UART_Transmit_DMA\u9700\u8981\u82b1\u8d39\u8f83\u591a\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u914d\u7f6e\u786c\u4ef6\uff0c\u4ee5\u4fbf\u80fd\u591f\u6b63\u786e\u5730\u4f7f\u7528\u5b83\u3002\u5982\u679c\u5f00\u53d1\u8005\u6ca1\u6709\u8db3\u591f\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u914d\u7f6e\u786c\u4ef6\uff0c\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u65e0\u6cd5\u6b63\u786e\u5730\u8fd0\u884c\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  HAL_UART_Transmit_DMA\u662f\u4e00\u79cd\u9ad8\u6548\u7684UART\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u8282\u7701\u5f00\u53d1\u8005\u7684\u65f6\u95f4\u548c\u8d44\u6e90\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002<\/strong>\u4f46\u662f\uff0c\u5b83\u4e5f\u6709\u4e00\u4e9b\u7f3a\u70b9\uff0c\u4f8b\u5982\u53ea\u80fd\u7528\u4e8e\u7279\u5b9a\u7684\u786c\u4ef6\u73af\u5883\uff0c\u800c\u4e14\u9700\u8981\u82b1\u8d39\u8f83\u591a\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u914d\u7f6e\u786c\u4ef6\uff0c\u4ee5\u4fbf\u80fd\u591f\u6b63\u786e\u5730\u4f7f\u7528\u5b83\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528HAL_UART_Transmit_DMA\u4e4b\u524d\uff0c\u5f00\u53d1\u8005\u5e94\u8be5\u5145\u5206\u8003\u8651\u5b83\u7684\u4f18\u52bf\u548c\u7f3a\u70b9\uff0c\u4ee5\u4fbf\u80fd\u591f\u505a\u51fa\u6b63\u786e\u7684\u9009\u62e9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

HAL_UART_Transmit_DMA\u662f\u4e00\u79cd\u9ad8\u6548\u7684UART\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u8282\u7701\u5927\u91cf\u7684\u65f6\u95f4\u548c\u8d44\u6e90\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002\u5b83\u4f7f\u7528\u4e86\u786c\u4ef6DMA\uff08DirectM<\/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":[145],"class_list":["post-41540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-uart"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/41540","targetHints":{"allow":["GET"]}}],"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=41540"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/41540\/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=41540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=41540"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=41540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}