{"id":1709,"date":"2019-06-12T09:47:30","date_gmt":"2019-06-12T01:47:30","guid":{"rendered":"https:\/\/www.xiaobo.li\/?p=1709"},"modified":"2019-06-12T09:47:30","modified_gmt":"2019-06-12T01:47:30","slug":"%e4%b8%b2%e5%8f%a3%e3%80%81com%e5%8f%a3%e3%80%81ttl%e3%80%81rs232%e3%80%81rs485","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/1709","title":{"rendered":"\u4e32\u53e3\u3001COM\u53e3\u3001TTL\u3001RS232\u3001RS485"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">1\u3001\u4e32\u53e3\u3001COM\u53e3\u662f\u6307\u7684\u7269\u7406\u63a5\u53e3\u5f62\u5f0f(\u786c\u4ef6)\u3002\u800cTTL\u3001RS-232\u3001RS-485\u662f\u6307\u7684\u7535\u5e73\u6807\u51c6(\u7535\u4fe1\u53f7)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u63a5\u8bbe\u5907\u7684\u65f6\u5019\uff0c\u4e00\u822c\u53ea\u63a5GND RX TX\u3002\u4e0d\u4f1a\u63a5Vcc\u6216\u8005+3.3v\u7684\u7535\u6e90\u7ebf\uff0c\u907f\u514d\u4e0e\u76ee\u6807\u8bbe\u5907\u4e0a\u7684\u4f9b\u7535\u51b2\u7a81\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001PL2303\u3001CP2102\u82af\u7247\u90fd\u662f\u5e38\u7528\u7684USB\u8f6cTTL\u4e32\u53e3\u7684\u82af\u7247\uff0c\u7528USB\u6765\u6269\u5c55\u4e32\u53e3(TTL\u7535\u5e73)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001MAX232\u82af\u7247\u662fTTL\u7535\u5e73\u4e0eRS232\u7535\u5e73\u7684\u4e13\u7528\u53cc\u5411\u8f6c\u6362\u82af\u7247\uff0c\u53ef\u4ee5TTL\u8f6cRS-232\uff0c\u4e5f\u53ef\u4ee5RS-232\u8f6cTTL\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5\u3001TTL\u6807\u51c6\u662f\u4f4e\u7535\u5e73\u4e3a0\uff0c\u9ad8\u7535\u5e73\u4e3a1\uff08+5V\u7535\u5e73\uff09\u3002RS-232\u6807\u51c6\u662f\u6b63\u7535\u5e73\u4e3a0\uff0c\u8d1f\u7535\u5e73\u4e3a1\uff08\u00b115V\u7535\u5e73\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6\u3001RS-485\u7684\u7535\u6c14\u7279\u6027\uff1a\u903b\u8f91\u201c1\u201d\u4ee5\u4e24\u7ebf\u95f4\u7684\u7535\u538b\u5dee\u4e3a+\uff082\u20146\uff09V\u8868\u793a\uff1b\u903b\u8f91\u201c0\u201d\u4ee5\u4e24\u7ebf\u95f4\u7684\u7535\u538b\u5dee\u4e3a-\uff082\u20146\uff09V\u8868\u793a\u3002\u63a5\u53e3\u4fe1\u53f7\u7535\u5e73\u6bd4RS-232-C\u964d\u4f4e\u4e86\uff0c\u5c31\u4e0d\u6613\u635f\u574f\u63a5\u53e3\u7535\u8def\u7684\u82af\u7247\uff0c\u4e14\u8be5\u7535\u5e73\u4e0eTTL\u7535\u5e73\u517c\u5bb9\uff0c\u53ef\u65b9\u4fbf\u4e0eTTL\u7535\u8def\u8fde\u63a5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&nbsp;&nbsp;&nbsp;&nbsp;\u4e32\u53e3\u3001COM\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;COM\u53e3\u5373\u4e32\u884c\u901a\u8baf\u7aef\u53e3\uff0c\u7b80\u79f0\u4e32\u53e3\u3002\u4e00\u822c\u6211\u4eec\u89c1\u5230\u7684\u662f\u4e24\u79cd\u7269\u7406\u6807\u51c6\u3002D\u578b9\u9488\u63d2\u5934\uff0c\u548c \n4\u9488\u675c\u90a6\u5934\u4e24\u79cd\u3002\u4e0b\u56fe\u662f\u4e2aUSB\u8f6cTTL\u4e32\u53e3\u7684\u5c0f\u677f\uff0c\u53ef\u4ee5\u7528USB\u6269\u5c55\u51fa\u4e00\u4e2a\u4e32\u53e3\u3002\u5bf9\u4e8e\u4f7f\u7528\u7b14\u8bb0\u672c\u6216\u8005\u6ca1\u6709COM\u7684\u53f0\u673a\u5f00\u53d1\u7684\u5d4c\u5165\u5f0f\u5de5\u7a0b\u5e08\u6765\u8bf4\u5c31\u662f\u5fc5\u5907\u5de5\u5177\u3002\u9664\u4e86\u53ef\u4ee5\u4f7f\u7528\u4e32\u53e3\u7ed9MCU\u4e0b\u8f7d\u7a0b\u5e8f\u5916\uff0c\u8fd8\u662f\u8f85\u52a9\u8c03\u8bd5\u7a0b\u5e8f\u7684\u795e\u5668\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"423\" src=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/1.jpg\" alt=\"\" class=\"wp-image-1710\" srcset=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/1.jpg 600w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/1-300x212.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"382\" src=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/2.jpg\" alt=\"\" class=\"wp-image-1711\" srcset=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/2.jpg 500w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/2-300x229.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&nbsp;&nbsp;&nbsp;&nbsp;RS232<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8fb9\u4ecb\u7ecd\u7684\u90fd\u662fUSB\u8f6cTTL\u4e32\u53e3\uff0c\u5982\u679c\u76ee\u6807\u8bbe\u5907\u4e0a\u662fRS-232\u4e32\u53e3(D\u578b9\u9488\u63a5\u53e3)\u53ef\u548b\u6574\u5440\uff1f\u518d\u63a5\u4e00\u7247MAX232\u8f6c\u6362\u4e00\u4e0b\u5c31\u884c\uff0c\u5982\u4e0b\u56fe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3.jpg\" alt=\"\" class=\"wp-image-1712\" srcset=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3.jpg 800w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3-150x150.jpg 150w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3-300x300.jpg 300w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3-768x768.jpg 768w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/3-624x624.jpg 624w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&nbsp;&nbsp;&nbsp;&nbsp;RS485<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;\u5728\u8981\u6c42\u901a\u4fe1\u8ddd\u79bb\u4e3a\u51e0\u5341\u7c73\u5230\u4e0a\u5343\u7c73\u65f6\uff0c\u5e7f\u6cdb\u91c7\u7528RS-485\u4e32\u884c\u603b\u7ebf\u6807\u51c6\u3002RS-485\u91c7\u7528\u5e73\u8861\u53d1\u9001\u548c\u5dee\u5206\u63a5\u6536\uff0c\u56e0\u6b64\u5177\u6709\u6291\u5236\u5171\u6a21\u5e72\u6270\u7684\u80fd\u529b\u3002RS-485\u63a5\u53e3\u7684\u6700\u5927\u4f20\u8f93\u8ddd\u79bb\u6807\u51c6\u503c\u4e3a4000\u82f1\u5c3a\uff08\u7ea61219\u7c73\uff09\uff0c\u5b9e\u9645\u4e0a\u53ef\u8fbe3000\u7c73\uff0c\u53e6\u5916RS-232-C\u63a5\u53e3\u5728\u603b\u7ebf\u4e0a\u53ea\u5141\u8bb8\u8fde\u63a51\u4e2a\u6536\u53d1\u5668\uff0c\u5373\u5355\u7ad9\u80fd\u529b\u3002\u800cRS-485\u63a5\u53e3\u5728\u603b\u7ebf\u4e0a\u662f\u5141\u8bb8\u8fde\u63a5\u591a\u8fbe128\u4e2a\u6536\u53d1\u5668\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"469\" height=\"337\" src=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/4.jpg\" alt=\"\" class=\"wp-image-1713\" srcset=\"https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/4.jpg 469w, https:\/\/www.xiaobo.li\/notes\/wp-content\/uploads\/2019\/06\/4-300x216.jpg 300w\" sizes=\"auto, (max-width: 469px) 100vw, 469px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u4e32\u53e3\u3001COM\u53e3\u662f\u6307\u7684\u7269\u7406\u63a5\u53e3\u5f62\u5f0f(\u786c\u4ef6)\u3002\u800cTTL\u3001RS-232\u3001RS-48 &hellip; <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/1709\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[342],"tags":[],"class_list":["post-1709","post","type-post","status-publish","format-standard","hentry","category-hardware"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=1709"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1709\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=1709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=1709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=1709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}