{"id":43821,"date":"2023-10-01T01:59:15","date_gmt":"2023-09-30T17:59:15","guid":{"rendered":"\/\/www.dealsbon.com\/?p=43821"},"modified":"2023-10-01T01:59:15","modified_gmt":"2023-09-30T17:59:15","slug":"dyzddqb","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/43821.html","title":{"rendered":"DMA\u4e0e\u4e2d\u65ad\u7684\u533a\u522b"},"content":{"rendered":"<p>&emsp;&emsp;DMA\uff08Direct Memory Access\uff09\u548c\u4e2d\u65ad\uff08Interrupts\uff09\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u5904\u7406\u5668\u786c\u4ef6\u529f\u80fd\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\u3002\u672c\u6587\u5c06\u4ecb\u7ecdDMA\u4e0e\u4e2d\u65ad\u7684\u4e0d\u540c\u4e4b\u5904\uff0c\u4ee5\u53ca\u5b83\u4eec\u5728\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u7b80\u4ecb<\/h2>\n<p>&emsp;&emsp;DMA\u662f\u4e00\u79cd\u786c\u4ef6\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\u3002\u5b83\u5141\u8bb8\u5904\u7406\u5668\u8bbf\u95ee\u5185\u5b58\u800c\u4e0d\u9700\u8981\u5904\u7406\u5668\u7684\u53c2\u4e0e\uff0c\u8fd9\u6837\u5904\u7406\u5668\u53ef\u4ee5\u5904\u7406\u5176\u4ed6\u4efb\u52a1\uff0c\u800c\u4e0d\u4f1a\u88abDMA\u6240\u963b\u585e\u3002DMA\u4e5f\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u5927\u91cf\u6570\u636e\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u4e00\u6b21\u6027\u5730\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u6216\u5199\u5165\u5927\u91cf\u6570\u636e\uff0c\u800c\u4e0d\u9700\u8981\u5904\u7406\u5668\u4e00\u6b21\u5904\u7406\u4e00\u4e2a\u5b57\u8282\u3002<\/p>\n<h3>&emsp;&emsp;DMA\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>&emsp;&emsp;DMA\u7684\u5de5\u4f5c\u539f\u7406\u5f88\u7b80\u5355\uff0c\u5b83\u4f7f\u7528\u4e00\u4e2a\u53eb\u505aDMA\u63a7\u5236\u5668\u7684\u786c\u4ef6\uff0c\u5b83\u4f1a\u63a7\u5236\u5904\u7406\u5668\u548c\u5185\u5b58\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u5f53\u5904\u7406\u5668\u9700\u8981\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\u65f6\uff0c\u5b83\u4f1a\u53d1\u51fa\u4e00\u4e2a\u8bf7\u6c42\uff0cDMA\u63a7\u5236\u5668\u4f1a\u63a5\u6536\u5230\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u7136\u540e\u5f00\u59cb\u5904\u7406\u6570\u636e\u7684\u8bfb\u53d6\u6216\u5199\u5165\u64cd\u4f5c\uff0c\u800c\u5904\u7406\u5668\u5219\u53ef\u4ee5\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u4efb\u52a1\u3002<\/p>\n<h2 style=\"text-align: center;\">\u4e2d\u65ad\u7b80\u4ecb<\/h2>\n<p>&emsp;&emsp;\u4e2d\u65ad\u662f\u4e00\u79cd\u786c\u4ef6\u529f\u80fd\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\u3002\u4e2d\u65ad\u53ef\u4ee5\u8ba9\u5904\u7406\u5668\u6682\u505c\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1\uff0c\u7136\u540e\u8f6c\u800c\u5904\u7406\u53e6\u4e00\u4e2a\u4efb\u52a1\uff0c\u5f53\u5904\u7406\u5b8c\u53e6\u4e00\u4e2a\u4efb\u52a1\u540e\uff0c\u5904\u7406\u5668\u4f1a\u7ee7\u7eed\u5904\u7406\u539f\u5148\u6682\u505c\u7684\u4efb\u52a1\u3002\u4e2d\u65ad\u4e5f\u53ef\u4ee5\u7528\u6765\u5904\u7406\u7cfb\u7edf\u4e2d\u53d1\u751f\u7684\u7d27\u6025\u60c5\u51b5\uff0c\u6bd4\u5982\u786c\u4ef6\u6545\u969c\u6216\u8f6f\u4ef6\u9519\u8bef\u3002<\/p>\n<h3>&emsp;&emsp;\u4e2d\u65ad\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>&emsp;&emsp;\u4e2d\u65ad\u7684\u5de5\u4f5c\u539f\u7406\u4e5f\u5f88\u7b80\u5355\uff0c\u5b83\u4f7f\u7528\u4e00\u4e2a\u53eb\u505a\u4e2d\u65ad\u63a7\u5236\u5668\u7684\u786c\u4ef6\uff0c\u5b83\u4f1a\u63a7\u5236\u5904\u7406\u5668\u548c\u5916\u90e8\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u5f53\u5916\u90e8\u8bbe\u5907\u9700\u8981\u5904\u7406\u5668\u5904\u7406\u67d0\u4e9b\u4efb\u52a1\u65f6\uff0c\u5b83\u4f1a\u53d1\u51fa\u4e00\u4e2a\u4e2d\u65ad\u8bf7\u6c42\uff0c\u4e2d\u65ad\u63a7\u5236\u5668\u4f1a\u63a5\u6536\u5230\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u7136\u540e\u5f00\u59cb\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u800c\u5904\u7406\u5668\u5219\u4f1a\u6682\u505c\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1\uff0c\u7136\u540e\u5904\u7406\u5916\u90e8\u8bbe\u5907\u7684\u8bf7\u6c42\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u4e0e\u4e2d\u65ad\u7684\u533a\u522b<\/h2>\n<p>&emsp;&emsp;DMA\u548c\u4e2d\u65ad\u90fd\u662f\u5904\u7406\u5668\u786c\u4ef6\u529f\u80fd\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\u3002\u4f46\u5b83\u4eec\u4e4b\u95f4\u4e5f\u5b58\u5728\u4e00\u4e9b\u660e\u663e\u7684\u533a\u522b\uff1a<\/p>\n<ul>\n<li>DMA\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u5927\u91cf\u6570\u636e\uff0c\u800c\u4e2d\u65ad\u5219\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u5904\u7406\u7d27\u6025\u60c5\u51b5\u3002<\/li>\n<li>DMA\u4f7f\u7528DMA\u63a7\u5236\u5668\u6765\u63a7\u5236\u5904\u7406\u5668\u548c\u5185\u5b58\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\uff0c\u800c\u4e2d\u65ad\u4f7f\u7528\u4e2d\u65ad\u63a7\u5236\u5668\u6765\u63a7\u5236\u5904\u7406\u5668\u548c\u5916\u90e8\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002<\/li>\n<li>DMA\u4e0d\u4f1a\u963b\u585e\u5904\u7406\u5668\uff0c\u800c\u4e2d\u65ad\u4f1a\u6682\u505c\u5904\u7406\u5668\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<p>&emsp;&emsp;<strong>\u603b\u4e4b\uff0cDMA\u548c\u4e2d\u65ad\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u5904\u7406\u5668\u786c\u4ef6\u529f\u80fd\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u660e\u663e\u7684\u533a\u522b\uff0c\u6bd4\u5982\u5904\u7406\u6570\u636e\u7684\u65b9\u5f0f\u3001\u662f\u5426\u4f1a\u963b\u585e\u5904\u7406\u5668\u7b49\u3002<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DMA\uff08DirectMemoryAccess\uff09\u548c\u4e2d\u65ad\uff08Interrupts\uff09\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u5904\u7406\u5668\u786c\u4ef6\u529f\u80fd\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5e2e\u52a9\u5904\u7406\u5668\u66f4\u6709\u6548\u5730\u5904\u7406\u6570\u636e\u3002\u672c\u6587\u5c06\u4ecb\u7ecdDMA\u4e0e\u4e2d\u65ad\u7684<\/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":[305],"class_list":["post-43821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/43821"}],"collection":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/comments?post=43821"}],"version-history":[{"count":0,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/43821\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media?parent=43821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/categories?post=43821"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/tags?post=43821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}