{"id":4986,"date":"2023-06-27T22:37:13","date_gmt":"2023-06-27T14:37:13","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=4986"},"modified":"2023-06-27T22:37:17","modified_gmt":"2023-06-27T14:37:17","slug":"uhdqb-2","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/4986.html","title":{"rendered":"uart\u548c485\u7684\u533a\u522b"},"content":{"rendered":"\n

\u3000\u3000UART\u548c485\u662f\u4e24\u79cd\u5e38\u89c1\u7684\u4e32\u53e3\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u4eec\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u673a\u5668\u4eba\u63a7\u5236\u3001\u7535\u5b50\u8bbe\u5907\u7b49\u9886\u57df\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002<\/strong>\u672c\u6587\u5c06\u4ecb\u7ecdUART\u548c485\u7684\u533a\u522b\u4ee5\u53ca\u5b83\u4eec\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001UART<\/h2>\n\n\n\n

\u3000\u3000UART(Universal Asynchronous Receiver\/Transmitter)\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u4e32\u53e3\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u662f\u4e00\u79cd\u5f02\u6b65\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u4e3b\u8981\u7528\u4e8e\u77ed\u8ddd\u79bb\u7684\u6570\u636e\u4f20\u8f93\u3002UART\u901a\u5e38\u7528\u4e8e\u8fde\u63a5\u5fae\u63a7\u5236\u5668\u3001\u4f20\u611f\u5668\u548c\u5176\u4ed6\u5916\u8bbe\u3002<\/p>\n\n\n\n

\u3000\u3000UART\u901a\u4fe1\u7684\u4f20\u8f93\u901f\u7387\u5f88\u9ad8\uff0c\u53ef\u4ee5\u8fbe\u5230\u6570\u767e\u4e07\u4f4d\u6bcf\u79d2\uff0c\u800c\u4e14\u5b83\u7684\u6570\u636e\u4f20\u8f93\u662f\u53cc\u5411\u7684\uff0c\u5373\u53ef\u4ee5\u540c\u65f6\u8fdb\u884c\u53d1\u9001\u548c\u63a5\u6536\u3002UART\u901a\u4fe1\u534f\u8bae\u4f7f\u7528\u4e24\u6839\u7ebf\u8fdb\u884c\u901a\u4fe1\uff0c\u5206\u522b\u662fTX(\u53d1\u9001)\u548cRX(\u63a5\u6536)\u3002<\/p>\n\n\n\n

\u3000\u3000UART\u901a\u4fe1\u534f\u8bae\u7684\u4f18\u70b9\u662f\u4f20\u8f93\u901f\u7387\u9ad8\uff0c\u6210\u672c\u4f4e\uff0c\u6613\u4e8e\u5b9e\u73b0\uff0c\u9002\u7528\u4e8e\u77ed\u8ddd\u79bb\u901a\u4fe1\u3002\u4f46\u662f\uff0cUART\u901a\u4fe1\u534f\u8bae\u7684\u7f3a\u70b9\u662f\u4f20\u8f93\u8ddd\u79bb\u6709\u9650\uff0c\u901a\u5e38\u4e0d\u8d85\u8fc715\u7c73\uff0c\u4e14\u4e0d\u652f\u6301\u591a\u70b9\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001RS-485<\/h2>\n\n\n\n

\u3000\u3000RS-485\u662f\u4e00\u79cd\u4e32\u53e3\u901a\u4fe1\u534f\u8bae\uff0c\u4e5f\u79f0\u4e3aEIA-485.\u5b83\u662f\u4e00\u79cd\u534a\u53cc\u5de5\u3001\u5dee\u5206\u4f20\u8f93\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u4e3b\u8981\u7528\u4e8e\u957f\u8ddd\u79bb\u901a\u4fe1\u548c\u591a\u70b9\u901a\u4fe1\u3002485\u901a\u4fe1\u534f\u8bae\u4f7f\u7528\u4e24\u6839\u7ebf\u8fdb\u884c\u901a\u4fe1\uff0c\u5206\u522b\u662fA\u7ebf\u548cB\u7ebf\u3002<\/p>\n\n\n\n

\u3000\u3000485\u901a\u4fe1\u534f\u8bae\u7684\u4f20\u8f93\u8ddd\u79bb\u53ef\u4ee5\u8fbe\u52301200\u7c73\uff0c\u800c\u4e14\u652f\u6301\u591a\u70b9\u901a\u4fe1\uff0c\u5373\u591a\u4e2a\u8bbe\u5907\u53ef\u4ee5\u901a\u8fc7\u540c\u4e00\u6761\u603b\u7ebf\u8fdb\u884c\u901a\u4fe1\u3002485\u901a\u4fe1\u534f\u8bae\u8fd8\u53ef\u4ee5\u540c\u65f6\u8fdb\u884c\u591a\u8def\u901a\u4fe1\uff0c\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u523010Mbps\u3002<\/p>\n\n\n\n

\u3000\u3000485\u901a\u4fe1\u534f\u8bae\u7684\u4f18\u70b9\u662f\u4f20\u8f93\u8ddd\u79bb\u8fdc\uff0c\u652f\u6301\u591a\u70b9\u901a\u4fe1\uff0c\u4f20\u8f93\u901f\u7387\u9ad8\u3002\u4f46\u662f\uff0c485\u901a\u4fe1\u534f\u8bae\u7684\u7f3a\u70b9\u662f\u6210\u672c\u8f83\u9ad8\uff0c\u5b9e\u73b0\u8d77\u6765\u8f83\u4e3a\u590d\u6742\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001UART\u548c485\u7684\u533a\u522b<\/h2>\n\n\n\n

\u3000\u30001.\u901a\u4fe1\u65b9\u5f0f\u4e0d\u540c<\/h3>\n\n\n\n

\u3000\u3000UART\u662f\u5f02\u6b65\u901a\u4fe1\uff0c\u800c485\u662f\u534a\u53cc\u5de5\u5dee\u5206\u4f20\u8f93\u3002<\/p>\n\n\n\n

\u3000\u30002.\u4f20\u8f93\u8ddd\u79bb\u4e0d\u540c<\/h3>\n\n\n\n

\u3000\u3000UART\u901a\u4fe1\u8ddd\u79bb\u8f83\u77ed\uff0c\u901a\u5e38\u4e0d\u8d85\u8fc715\u7c73\uff0c\u800c485\u901a\u4fe1\u8ddd\u79bb\u53ef\u4ee5\u8fbe\u52301200\u7c73\u3002<\/p>\n\n\n\n

\u3000\u30003.\u652f\u6301\u591a\u70b9\u901a\u4fe1\u7684\u80fd\u529b\u4e0d\u540c<\/h3>\n\n\n\n

\u3000\u3000UART\u4e0d\u652f\u6301\u591a\u70b9\u901a\u4fe1\uff0c\u800c485\u652f\u6301\u591a\u70b9\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u30004.\u4f20\u8f93\u901f\u7387\u4e0d\u540c<\/h3>\n\n\n\n

\u3000\u3000UART\u7684\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u5230\u6570\u767e\u4e07\u4f4d\u6bcf\u79d2\uff0c\u800c485\u7684\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u523010Mbps\u3002<\/p>\n\n\n\n

\u3000\u30005.\u6210\u672c\u4e0d\u540c<\/h3>\n\n\n\n

\u3000\u3000UART\u7684\u6210\u672c\u8f83\u4f4e\uff0c\u5b9e\u73b0\u7b80\u5355\uff0c\u800c485\u7684\u6210\u672c\u8f83\u9ad8\uff0c\u5b9e\u73b0\u590d\u6742\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001\u7ed3\u8bba<\/h2>\n\n\n\n

\u3000\u3000UART\u548c485\u662f\u4e24\u79cd\u5e38\u89c1\u7684\u4e32\u53e3\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u4eec\u5728\u4e0d\u540c\u7684\u573a\u5408\u4e0b\u5e94\u7528\u8f83\u4e3a\u5e7f\u6cdb\u3002UART\u901a\u4fe1\u534f\u8bae\u9002\u7528\u4e8e\u77ed\u8ddd\u79bb\u901a\u4fe1\uff0c\u6210\u672c\u4f4e\uff0c\u6613\u4e8e\u5b9e\u73b0\uff0c\u800c485\u901a\u4fe1\u534f\u8bae\u9002\u7528\u4e8e\u957f\u8ddd\u79bb\u901a\u4fe1\u548c\u591a\u70b9\u901a\u4fe1\uff0c\u4f20\u8f93\u901f\u7387\u9ad8\uff0c\u4f46\u6210\u672c\u8f83\u9ad8\uff0c\u5b9e\u73b0\u590d\u6742\u3002<\/strong>\u56e0\u6b64\uff0c\u5728\u9009\u62e9UART\u548c485\u901a\u4fe1\u534f\u8bae\u65f6\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u9700\u6c42\u8fdb\u884c\u9009\u62e9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

UART\u548c485\u662f\u4e24\u79cd\u5e38\u89c1\u7684\u4e32\u53e3\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u4eec\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u673a\u5668\u4eba\u63a7\u5236\u3001\u7535\u5b50\u8bbe\u5907\u7b49\u9886\u57df\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u672c\u6587\u5c06\u4ecb\u7ecdUART\u548c485\u7684\u533a\u522b\u4ee5\u53ca\u5b83\u4eec\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n","protected":false},"author":1,"featured_media":3671,"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":[61,145],"class_list":["post-4986","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-r","tag-uart"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/4986","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=4986"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/4986\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=4986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=4986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=4986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}