{"id":819,"date":"2024-08-03T17:04:57","date_gmt":"2024-08-03T09:04:57","guid":{"rendered":"https:\/\/aoofoo.com\/?p=819"},"modified":"2024-08-07T11:15:02","modified_gmt":"2024-08-07T03:15:02","slug":"2-24-usart%e4%b8%b2%e5%8f%a3%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/aoofoo.com\/index.php\/2024\/08\/03\/2-24-usart%e4%b8%b2%e5%8f%a3%e5%8d%8f%e8%ae%ae\/","title":{"rendered":"2.24 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\/><\/p>\n<p>USART\u4e32\u53e3\uff1a\u5b83\u7684\u5f15\u811a\u662fTX\u548cRX\uff0c\u6709\u7684\u5730\u65b9\u4e5f\u53ebTXD\u548cRXD\uff0c\u8fd9\u4e24\u79cd\u540d\u79f0\u662f\u4e00\u4e2a\u610f\u601d\uff0cTX\uff08Transmit Exchange\uff09\u662f\u6570\u636e\u53d1\u9001\u811a\uff0cRX\uff08Receive Exchange\uff09\u662f\u6570\u636e\u63a5\u6536\u811a\u3002<\/p>\n<p>I2C\u901a\u4fe1\uff1a\u5b83\u7684\u5f15\u811a\u662fSCL\u548cSDA\uff0cSCL\uff08Serial Clock\uff09\u662f\u65f6\u949f\uff0cSDA\uff08Serial Data\uff09\u662f\u6570\u636e\u3002<\/p>\n<p>SPI\u901a\u4fe1\uff1a\u5b83\u7684\u5f15\u811a\u662fSCLK\u3001MOSI\u3001MISO\u3001CS\uff0cSCLK\uff08Serial Clock\uff09\u662f\u65f6\u949f\uff0cMOSI\uff08Master Output Slave Input\uff09\u662f\u4e3b\u673a\u8f93\u51fa\u6570\u636e\u811a\uff0cMISO\uff08Master Input Slave Output\uff09\u662f\u4e3b\u673a\u8f93\u5165\u6570\u636e\u811a\uff0cCS\uff08Chip Select\uff09\u662f\u7247\u9009\uff0c\u7528\u4e8e\u6307\u5b9a\u901a\u4fe1\u7684\u5bf9\u8c61\u3002<\/p>\n<p>Can\u901a\u4fe1\uff1a\u5b83\u7684\u5f15\u811a\u662fCAN_H\u548cCAN_L\uff0c\u8fd9\u4e24\u4e2a\u662f\u5dee\u5206\u6570\u636e\u811a\uff0c\u662f\u7528\u4e24\u4e2a\u5f15\u811a\u8868\u793a\u4e00\u4e2a\u5dee\u5206\u6570\u636e\u3002<\/p>\n<p>USB\u901a\u4fe1\uff1a\u5b83\u7684\u5f15\u811a\u662fDP\uff08Data Positive\uff09\u548cDM\uff08Data Minus\uff09\u6216\u8005\u53ebD+\u548cD-\uff0c\u4e5f\u662f\u4e00\u5bf9\u5dee\u5206\u6570\u636e\u811a\u3002<\/p>\n<div class=\"sc-collapse\"><div class=\"sc-collapse__header\"><svg class=\"sc-collapse__arrow\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\u5dee\u5206\u6570\u636e\u6982\u5ff5\u8865\u5145<\/div><div class=\"sc-collapse__body\"><div class=\"sc-collapse__content\"><\/p>\n<p>\u5dee\u5206\u6570\u636e\u4f20\u8f93\u4f7f\u7528\u4e24\u6761\u4fe1\u53f7\u7ebf\u6765\u4f20\u8f93\u540c\u4e00\u4e2a\u4fe1\u53f7\uff0c\u4f46\u4e24\u6761\u7ebf\u4e0a\u7684\u4fe1\u53f7\u662f\u76f8\u53cd\u7684\uff08\u5373\uff0c\u4e00\u6761\u7ebf\u4e0a\u4f20\u8f93\u9ad8\u7535\u5e73\u65f6\uff0c\u53e6\u4e00\u6761\u7ebf\u4e0a\u4f20\u8f93\u4f4e\u7535\u5e73\uff0c\u53cd\u4e4b\u4ea6\u7136\uff09\u3002\u8fd9\u4e24\u6761\u4fe1\u53f7\u7ebf\u901a\u5e38\u88ab\u79f0\u4e3a D+ \u548c D- \u6216 CAN_H \u548c CAN_L\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5728 CAN \u603b\u7ebf\u4e2d\uff0c\u4fe1\u53f7\u7ebf\u4e3a CAN_H \u548c CAN_L\uff0c\u800c\u5728 USB \u4e2d\uff0c\u4fe1\u53f7\u7ebf\u4e3a D+ \u548c D-\u3002<\/p>\n<p>\u5dee\u5206\u6570\u636e\u4f20\u8f93\u662f\u4e00\u79cd\u901a\u8fc7\u4e24\u6761\u4fe1\u53f7\u7ebf\u4f20\u8f93\u76f8\u53cd\u4fe1\u53f7\u7684\u6280\u672f\uff0c\u5177\u6709\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u3001\u4fe1\u53f7\u5b8c\u6574\u6027\u597d\u548c\u7535\u78c1\u8f90\u5c04\u4f4e\u7b49\u4f18\u70b9\u3002\u5728 STM32 \u5fae\u63a7\u5236\u5668\u4e2d\uff0cCAN \u901a\u4fe1\u548c USB \u901a\u4fe1\u90fd\u4f7f\u7528\u5dee\u5206\u6570\u636e\u4f20\u8f93\uff0c\u4ee5\u786e\u4fdd\u7a33\u5b9a\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u3002\u4e86\u89e3\u5dee\u5206\u4f20\u8f93\u7684\u5de5\u4f5c\u539f\u7406\u6709\u52a9\u4e8e\u66f4\u597d\u5730\u8bbe\u8ba1\u548c\u8c03\u8bd5\u76f8\u5173\u7684\u901a\u4fe1\u7cfb\u7edf\u3002<\/p>\n<p>\u6297\u5e72\u6270\u80fd\u529b\u5f3a\uff1a<br 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