{"id":38868,"date":"2023-09-30T16:30:23","date_gmt":"2023-09-30T08:30:23","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=38868"},"modified":"2023-09-30T16:30:23","modified_gmt":"2023-09-30T08:30:23","slug":"ujxdy","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/38868.html","title":{"rendered":"UART\u63a5\u7ebf\u5b9a\u4e49"},"content":{"rendered":"<p>&emsp;&emsp;UART\uff08Universal Asynchronous Receiver \/ Transmitter\uff09\uff0c\u5168\u79f0\u4e3a\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff0c\u662f\u4e00\u79cd\u5e38\u7528\u7684\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\uff0c\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u8fbe\u5230115200 bps\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5168\u53cc\u5de5\u7684\u6570\u636e\u4f20\u8f93\uff0c\u662f\u8bb8\u591a\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u4f7f\u7528\u6700\u591a\u7684\u63a5\u53e3\u4e4b\u4e00\u3002UART\u63a5\u53e3\u7684\u5b9a\u4e49\u4e3b\u8981\u5305\u62ec\u63a5\u7ebf\u5b9a\u4e49\u3001\u6570\u636e\u4f20\u8f93\u683c\u5f0f\u3001\u6821\u9a8c\u65b9\u5f0f\u7b49\u5185\u5bb9\u3002<\/p>\n<h2 style=\"text-align: center;\">UART\u63a5\u7ebf\u5b9a\u4e49<\/h2>\n<p>&emsp;&emsp;UART\u63a5\u53e3\u7684\u63a5\u7ebf\u5b9a\u4e49\u4e3b\u8981\u5305\u62ecTXD\u3001RXD\u3001GND\u548cVCC\u56db\u6839\u7ebf\uff0c\u5176\u4e2d\uff0cTXD\u4e3a\u53d1\u9001\u7ebf\uff0cRXD\u4e3a\u63a5\u6536\u7ebf\uff0cGND\u4e3a\u5730\u7ebf\uff0cVCC\u4e3a\u7535\u6e90\u7ebf\u3002TXD\u548cRXD\u7ebf\u4e4b\u95f4\u7684\u4fe1\u53f7\u4f20\u8f93\u662f\u53cc\u5411\u7684\uff0c\u5f53TXD\u53d1\u51fa\u4fe1\u53f7\u65f6\uff0cRXD\u63a5\u6536\u4fe1\u53f7\uff1b\u5f53RXD\u53d1\u51fa\u4fe1\u53f7\u65f6\uff0cTXD\u63a5\u6536\u4fe1\u53f7\u3002<\/p>\n<h3>&emsp;&emsp;TXD\u7ebf<\/h3>\n<p>&emsp;&emsp;TXD\uff08Transmit Data\uff09\u7ebf\u662fUART\u63a5\u53e3\u7684\u53d1\u9001\u7ebf\uff0c\u5b83\u7528\u4e8e\u53d1\u9001\u6570\u636e\uff0c\u53ef\u4ee5\u5728TXD\u7ebf\u4e0a\u63a5\u6536\u5230\u8bbe\u5907\u53d1\u51fa\u7684\u4fe1\u53f7\u3002<\/p>\n<h3>&emsp;&emsp;RXD\u7ebf<\/h3>\n<p>&emsp;&emsp;RXD\uff08Receive Data\uff09\u7ebf\u662fUART\u63a5\u53e3\u7684\u63a5\u6536\u7ebf\uff0c\u5b83\u7528\u4e8e\u63a5\u6536\u6765\u81ea\u5176\u4ed6\u8bbe\u5907\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u5728RXD\u7ebf\u4e0a\u53d1\u51fa\u4fe1\u53f7\u3002<\/p>\n<h3>&emsp;&emsp;GND\u7ebf<\/h3>\n<p>&emsp;&emsp;GND\uff08Ground\uff09\u7ebf\u662fUART\u63a5\u53e3\u7684\u5730\u7ebf\uff0c\u5b83\u7528\u4e8e\u63a5\u5730\uff0c\u4fdd\u8bc1UART\u63a5\u53e3\u7684\u4fe1\u53f7\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<h3>&emsp;&emsp;VCC\u7ebf<\/h3>\n<p>&emsp;&emsp;VCC\uff08Voltage Common Collector\uff09\u7ebf\u662fUART\u63a5\u53e3\u7684\u7535\u6e90\u7ebf\uff0c\u5b83\u7528\u4e8e\u63d0\u4f9bUART\u63a5\u53e3\u7684\u7535\u6e90\uff0c\u4fdd\u8bc1UART\u63a5\u53e3\u7684\u4fe1\u53f7\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<h2 style=\"text-align: center;\">\u6570\u636e\u4f20\u8f93\u683c\u5f0f<\/h2>\n<p>&emsp;&emsp;UART\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u683c\u5f0f\u4e3b\u8981\u5206\u4e3a\u4e24\u79cd\uff1a\u5f02\u6b65\u4f20\u8f93\u683c\u5f0f\u548c\u540c\u6b65\u4f20\u8f93\u683c\u5f0f\u3002<\/p>\n<h3>&emsp;&emsp;\u5f02\u6b65\u4f20\u8f93\u683c\u5f0f<\/h3>\n<p>&emsp;&emsp;\u5f02\u6b65\u4f20\u8f93\u683c\u5f0f\u662fUART\u63a5\u53e3\u6700\u5e38\u7528\u7684\u4f20\u8f93\u683c\u5f0f\uff0c\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u8fbe\u5230115200 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center;\">\u6821\u9a8c\u65b9\u5f0f<\/h2>\n<p>&emsp;&emsp;UART\u63a5\u53e3\u652f\u6301\u591a\u79cd\u6821\u9a8c\u65b9\u5f0f\uff0c\u5305\u62ec\u5947\u5076\u6821\u9a8c\u3001\u548c\u6821\u9a8c\u3001CRC\u6821\u9a8c\u7b49\u3002<\/p>\n<h3>&emsp;&emsp;\u5947\u5076\u6821\u9a8c<\/h3>\n<p>&emsp;&emsp;\u5947\u5076\u6821\u9a8c\u662fUART\u63a5\u53e3\u6700\u5e38\u7528\u7684\u6821\u9a8c\u65b9\u5f0f\uff0c\u5b83\u7684\u539f\u7406\u662f\uff1a\u53d1\u9001\u65b9\u5728\u53d1\u9001\u6570\u636e\u65f6\uff0c\u4f1a\u8ba1\u7b97\u53d1\u9001\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5e76\u5c06\u6821\u9a8c\u4f4d\u53d1\u9001\u5230\u63a5\u6536\u65b9\uff1b\u63a5\u6536\u65b9\u63a5\u6536\u5230\u6570\u636e\u548c\u6821\u9a8c\u4f4d\u540e\uff0c\u4f1a\u8ba1\u7b97\u63a5\u6536\u5230\u7684\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u76f8\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u6ca1\u6709\u88ab\u7834\u574f\uff0c\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\uff1b\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u4e0d\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u5df2\u7ecf\u88ab\u7834\u574f\uff0c\u4e0d\u80fd\u6b63\u5e38\u4f7f\u7528\u3002<\/p>\n<h3>&emsp;&emsp;\u548c\u6821\u9a8c<\/h3>\n<p>&emsp;&emsp;\u548c\u6821\u9a8c\u662fUART\u63a5\u53e3\u6b21\u5e38\u7528\u7684\u6821\u9a8c\u65b9\u5f0f\uff0c\u5b83\u7684\u539f\u7406\u662f\uff1a\u53d1\u9001\u65b9\u5728\u53d1\u9001\u6570\u636e\u65f6\uff0c\u4f1a\u8ba1\u7b97\u53d1\u9001\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5e76\u5c06\u6821\u9a8c\u4f4d\u53d1\u9001\u5230\u63a5\u6536\u65b9\uff1b\u63a5\u6536\u65b9\u63a5\u6536\u5230\u6570\u636e\u548c\u6821\u9a8c\u4f4d\u540e\uff0c\u4f1a\u8ba1\u7b97\u63a5\u6536\u5230\u7684\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u76f8\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u6ca1\u6709\u88ab\u7834\u574f\uff0c\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\uff1b\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u4e0d\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u5df2\u7ecf\u88ab\u7834\u574f\uff0c\u4e0d\u80fd\u6b63\u5e38\u4f7f\u7528\u3002<\/p>\n<h3>&emsp;&emsp;CRC\u6821\u9a8c<\/h3>\n<p>&emsp;&emsp;CRC\u6821\u9a8c\u662fUART\u63a5\u53e3\u8f83\u5c11\u4f7f\u7528\u7684\u6821\u9a8c\u65b9\u5f0f\uff0c\u5b83\u7684\u539f\u7406\u662f\uff1a\u53d1\u9001\u65b9\u5728\u53d1\u9001\u6570\u636e\u65f6\uff0c\u4f1a\u8ba1\u7b97\u53d1\u9001\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5e76\u5c06\u6821\u9a8c\u4f4d\u53d1\u9001\u5230\u63a5\u6536\u65b9\uff1b\u63a5\u6536\u65b9\u63a5\u6536\u5230\u6570\u636e\u548c\u6821\u9a8c\u4f4d\u540e\uff0c\u4f1a\u8ba1\u7b97\u63a5\u6536\u5230\u7684\u6570\u636e\u7684\u6821\u9a8c\u4f4d\uff0c\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u76f8\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u6ca1\u6709\u88ab\u7834\u574f\uff0c\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\uff1b\u5982\u679c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u548c\u63a5\u6536\u5230\u7684\u6821\u9a8c\u4f4d\u4e0d\u540c\uff0c\u5219\u8868\u793a\u6570\u636e\u5df2\u7ecf\u88ab\u7834\u574f\uff0c\u4e0d\u80fd\u6b63\u5e38\u4f7f\u7528\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>UART\u63a5\u53e3\u662f\u4e00\u79cd\u5e38\u7528\u7684\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\uff0c\u5b83\u7684\u63a5\u7ebf\u5b9a\u4e49\u4e3b\u8981\u5305\u62ecTXD\u3001RXD\u3001GND\u548cVCC\u56db\u6839\u7ebf\uff0c\u5176\u4e2d\uff0cTXD\u548cRXD\u4e3a\u53cc\u5411\u4fe1\u53f7\u7ebf\uff0cGND\u548cVCC\u4e3a\u7535\u6e90\u7ebf\u3002<\/strong>UART\u63a5\u53e3\u7684\u6570\u636e\u4f20\u8f93\u683c\u5f0f\u4e3b\u8981\u5206\u4e3a\u5f02\u6b65\u4f20\u8f93\u683c\u5f0f\u548c\u540c\u6b65\u4f20\u8f93\u683c\u5f0f\uff0c\u5176\u6821\u9a8c\u65b9\u5f0f\u4e3b\u8981\u6709\u5947\u5076\u6821\u9a8c\u3001\u548c\u6821\u9a8c\u548cCRC\u6821\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UART\uff08UniversalAsynchronousReceiver\/Transmitter\uff09\uff0c\u5168\u79f0\u4e3a\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668\uff0c\u662f\u4e00\u79cd\u5e38\u7528\u7684\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\uff0c\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u8fbe\u5230<\/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-38868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-uart"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/38868"}],"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=38868"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/38868\/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=38868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=38868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=38868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}