{"id":127,"date":"2019-06-11T00:01:10","date_gmt":"2019-06-10T16:01:10","guid":{"rendered":"http:\/\/zechs.taipei\/?p=127"},"modified":"2019-06-12T23:03:37","modified_gmt":"2019-06-12T15:03:37","slug":"basics-of-uart-communication","status":"publish","type":"post","link":"https:\/\/zechs.taipei\/?p=127","title":{"rendered":"UART\u901a\u4fe1\u7684\u57fa\u790e(\u8f49)"},"content":{"rendered":"<p>\u539f\u6587\u7db2\u5740<br> <a href=\"http:\/\/www.circuitbasics.com\/basics-uart-communication\/\">http:\/\/www.circuitbasics.com\/basics-uart-communication\/<\/a> <\/p>\n\n\n\n<h1 class=\"wp-block-heading\">BASICS OF UART COMMUNICATION<\/h1>\n\n\n\n<p>Posted by&nbsp;<a href=\"http:\/\/www.circuitbasics.com\/author\/circuitbasicsgmail-com\/\">Circuit Basics<\/a>&nbsp;|&nbsp;<a href=\"http:\/\/www.circuitbasics.com\/diy-electronics\/\">DIY Electronics<\/a>&nbsp;|&nbsp;<a href=\"http:\/\/www.circuitbasics.com\/basics-uart-communication\/#comments\">59&nbsp;<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram.png\" alt=\"Basics of UART Communication\"\/><\/figure>\n\n\n\n<p>\u9084\u8a18\u5f97\u4ec0\u9ebc\u6642\u5019\u6253\u5370\u6a5f\uff0c\u9f20\u6a19\u548c\u8abf\u88fd\u89e3\u8abf\u5668\u90fd\u6709\u90a3\u4e9b\u5de8\u5927\u7b28\u91cd\u9023\u63a5\u5668\u7684\u7c97\u96fb\u7e9c\uff1f\u90a3\u4e9b\u5b57\u9762\u4e0a\u5fc5\u9808\u64f0\u9032\u4f60\u7684\u96fb\u8166\uff1f\u9019\u4e9b\u8a2d\u5099\u53ef\u80fd\u6b63\u5728\u4f7f\u7528UART\u8207\u60a8\u7684\u8a08\u7b97\u6a5f\u9032\u884c\u901a\u4fe1\u3002\u96d6\u7136USB\u5e7e\u4e4e\u5b8c\u5168\u53d6\u4ee3\u4e86\u820a\u7684\u96fb\u7e9c\u548c\u9023\u63a5\u5668\uff0c\u4f46UART\u7d55\u5c0d\u4e0d\u662f\u904e\u53bb\u7684\u4e8b\u60c5\u3002\u60a8\u6703\u767c\u73fe\u8a31\u591aDIY\u96fb\u5b50\u9805\u76ee\u4e2d\u4f7f\u7528UART\u5c07GPS\u6a21\u584a\uff0c\u85cd\u7259\u6a21\u584a\u548cRFID\u8b80\u5361\u5668\u6a21\u584a\u9023\u63a5\u5230\u60a8\u7684Raspberry Pi\uff0cArduino\u6216\u5176\u4ed6\u5fae\u63a7\u5236\u5668\u3002<\/p>\n\n\n\n<p><ins><\/ins><\/p>\n\n\n\n<p>UART\u4ee3\u8868\u901a\u7528\u7570\u6b65\u63a5\u6536\u5668\/\u767c\u9001\u5668\u3002\u5b83\u4e0d\u662f\u50cfSPI\u548cI2C\u9019\u6a23\u7684\u901a\u4fe1\u5354\u8b70\uff0c\u800c\u662f\u5fae\u63a7\u5236\u5668\u4e2d\u7684\u7269\u7406\u96fb\u8def\u6216\u7368\u7acb\u7684IC\u3002 UART\u7684\u4e3b\u8981\u7528\u9014\u662f\u767c\u9001\u548c\u63a5\u6536\u4e32\u884c\u6578\u64da\u3002 <\/p>\n\n\n\n<p>UART\u6700\u597d\u7684\u4e00\u9ede\u662f\u5b83\u53ea\u4f7f\u7528\u5169\u6839\u7dda\u5728\u8a2d\u5099\u4e4b\u9593\u50b3\u8f38\u6578\u64da\u3002 UART\u80cc\u5f8c\u7684\u539f\u7406\u5f88\u5bb9\u6613\u7406\u89e3\uff0c\u4f46\u662f\u5982\u679c\u4f60\u9084\u6c92\u6709\u95b1\u8b80\u672c\u7cfb\u5217\u7684\u7b2c\u4e00\u90e8\u5206\uff0cSPI\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e\u77e5\u8b58\uff0c\u9019\u53ef\u80fd\u662f\u4e00\u500b\u5f88\u597d\u7684\u8d77\u9ede\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">INTRODUCTION TO UART COMMUNICATION<br>UART\u901a\u4fe1\u7c21\u4ecb <\/h2>\n\n\n\n<p>\u5728UART\u901a\u4fe1\u4e2d\uff0c\u5169\u500bUART\u76f4\u63a5\u76f8\u4e92\u901a\u4fe1\u3002\u767c\u9001UART\u5c07\u4f86\u81eaCPU\u7b49\u63a7\u5236\u8a2d\u5099\u7684\u4e26\u884c\u6578\u64da\u8f49\u63db\u70ba\u4e32\u884c\u5f62\u5f0f\uff0c\u4e26\u5c07\u5176\u4e32\u884c\u767c\u9001\u5230\u63a5\u6536UART\uff0c\u63a5\u6536UART\u7136\u5f8c\u5c07\u4e32\u884c\u6578\u64da\u8f49\u63db\u56de\u63a5\u6536\u8a2d\u5099\u7684\u4e26\u884c\u6578\u64da\u3002\u5728\u5169\u500bUART\u4e4b\u9593\u50b3\u8f38\u6578\u64da\u53ea\u9700\u8981\u5169\u6839\u7dda\u3002\u6578\u64da\u5f9e\u767c\u9001UART\u7684Tx\u5f15\u8173\u6d41\u5411\u63a5\u6536UART\u7684Rx\u5f15\u8173\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Basic-Connection-Diagram.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Basic-Connection-Diagram-300x147.png\" alt=\"Introduction to UART - Basic Connection Diagram\" class=\"wp-image-420924\"\/><\/a><\/figure><\/div>\n\n\n\n<p><ins><\/ins><\/p>\n\n\n\n<p>UART\u4ee5\u7570\u6b65\u65b9\u5f0f\u767c\u9001\u6578\u64da\uff0c\u9019\u610f\u5473\u8457\u6c92\u6709\u6642\u9418\u4fe1\u865f\u5c07\u767c\u9001UART\u7684\u4f4d\u8f38\u51fa\u8207\u63a5\u6536UART\u7684\u4f4d\u63a1\u6a23\u540c\u6b65\u3002\u767c\u9001UART\u4e0d\u662f\u6642\u9418\u4fe1\u865f\uff0c\u800c\u662f\u5c07\u958b\u59cb\u548c\u505c\u6b62\u4f4d\u6dfb\u52a0\u5230\u6b63\u5728\u50b3\u8f38\u7684\u6578\u64da\u5305\u4e2d\u3002\u9019\u4e9b\u4f4d\u5b9a\u7fa9\u6578\u64da\u5305\u7684\u958b\u59cb\u548c\u7d50\u675f\uff0c\u56e0\u6b64\u63a5\u6536UART\u77e5\u9053\u4f55\u6642\u958b\u59cb\u8b80\u53d6\u4f4d\u3002<\/p>\n\n\n\n<p>\u7576\u63a5\u6536UART\u6aa2\u6e2c\u5230\u8d77\u59cb\u4f4d\u6642\uff0c\u5b83\u958b\u59cb\u4ee5\u7a31\u70ba\u6ce2\u7279\u7387\u7684\u7279\u5b9a\u983b\u7387\u8b80\u53d6\u8f38\u5165\u4f4d\u3002\u6ce2\u7279\u7387\u662f\u6578\u64da\u50b3\u8f38\u901f\u5ea6\u7684\u5ea6\u91cf\uff0c\u4ee5\u6bcf\u79d2\u4f4d\u6578\uff08bps\uff09\u8868\u793a\u3002\u5169\u500bUART\u5fc5\u9808\u4ee5\u5927\u7d04\u76f8\u540c\u7684\u6ce2\u7279\u7387\u904b\u884c\u3002\u767c\u9001\u548c\u63a5\u6536UART\u4e4b\u9593\u7684\u6ce2\u7279\u7387\u53ea\u80fd\u5728\u4f4d\u7684\u6642\u9593\u592a\u9060\u4e4b\u524d\u76f8\u5dee10\uff05\u5de6\u53f3\u3002<\/p>\n\n\n\n<p> \u5169\u500bUART\u9084\u5fc5\u9808\u914d\u7f6e\u70ba\u767c\u9001\u548c\u63a5\u6536\u76f8\u540c\u7684\u6578\u64da\u5305\u7d50\u69cb\u3002 <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/02\/Basics-of-UART-Communication-Specifications-Table.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img fetchpriority=\"high\" decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/02\/Basics-of-UART-Communication-Specifications-Table-300x95.png\" alt=\"Basics of UART Communication - Specifications Table\" class=\"wp-image-422516\" width=\"613\" height=\"194\"\/><\/a><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">HOW UART WORKS<\/h2>\n\n\n\n<p>\u8981\u50b3\u8f38\u6578\u64da\u7684UART\u5f9e\u6578\u64da\u7e3d\u7dda\u63a5\u6536\u6578\u64da\u3002\u6578\u64da\u7e3d\u7dda\u7528\u65bc\u901a\u904eCPU\uff0c\u5b58\u5132\u5668\u6216\u5fae\u63a7\u5236\u5668\u7b49\u5176\u4ed6\u8a2d\u5099\u5c07\u6578\u64da\u767c\u9001\u5230UART\u3002\u6578\u64da\u4ee5\u4e26\u884c\u5f62\u5f0f\u5f9e\u6578\u64da\u7e3d\u7dda\u50b3\u8f38\u5230\u767c\u9001UART\u3002\u5728\u767c\u9001UART\u5f9e\u6578\u64da\u7e3d\u7dda\u7372\u5f97\u4f75\u884c\u6578\u64da\u4e4b\u5f8c\uff0c\u5b83\u6dfb\u52a0\u8d77\u59cb\u4f4d\uff0c\u5947\u5076\u6821\u9a57\u4f4d\u548c\u505c\u6b62\u4f4d\uff0c\u5f9e\u800c\u5275\u5efa\u6578\u64da\u5305\u3002\u63a5\u4e0b\u4f86\uff0c\u6578\u64da\u5305\u5728Tx\u5f15\u8173\u4e0a\u9010\u4f4d\u4e32\u884c\u8f38\u51fa\u3002\u63a5\u6536UART\u5728\u5176Rx\u5f15\u8173\u4e0a\u9010\u4f4d\u8b80\u53d6\u6578\u64da\u5305\u3002\u7136\u5f8c\uff0c\u63a5\u6536UART\u5c07\u6578\u64da\u8f49\u63db\u56de\u4e26\u884c\u5f62\u5f0f\uff0c\u4e26\u522a\u9664\u8d77\u59cb\u4f4d\uff0c\u5947\u5076\u6821\u9a57\u4f4d\u548c\u505c\u6b62\u4f4d\u3002\u6700\u5f8c\uff0c\u63a5\u6536UART\u5c07\u6578\u64da\u5305\u4e26\u884c\u50b3\u8f38\u5230\u63a5\u6536\u7aef\u7684\u6578\u64da\u7e3d\u7dda\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-300x129.png\" alt=\"Introduction to UART - Data Transmission Diagram\" class=\"wp-image-420877\" width=\"649\" height=\"279\"\/><\/a><\/figure><\/div>\n\n\n\n<p> UART\u50b3\u8f38\u7684\u6578\u64da\u88ab\u7d44\u7e54\u6210\u6578\u64da\u5305\u3002\u6bcf\u500b\u6578\u64da\u5305\u5305\u542b1\u500b\u8d77\u59cb\u4f4d\uff0c5\u52309\u500b\u6578\u64da\u4f4d\uff08\u53d6\u6c7a\u65bcUART\uff09\uff0c\u53ef\u9078\u7684\u5947\u5076\u6821\u9a57\u4f4d\u4ee5\u53ca1\u62162\u500b\u505c\u6b62\u4f4d\uff1a <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Packet-Frame-and-Bits-2.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Packet-Frame-and-Bits-2-300x134.png\" alt=\"Introduction to UART - Packet, Frame, and Bits\" class=\"wp-image-420914\" width=\"506\" height=\"226\"\/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">START BIT<\/h3>\n\n\n\n<p>\u7576UART\u6578\u64da\u50b3\u8f38\u7dda\u4e0d\u50b3\u8f38\u6578\u64da\u6642\uff0c\u5b83\u901a\u5e38\u4fdd\u6301\u5728\u9ad8\u96fb\u58d3\u96fb\u5e73\u3002\u70ba\u4e86\u958b\u59cb\u6578\u64da\u50b3\u8f38\uff0c\u767c\u9001UART\u5c07\u50b3\u8f38\u7dda\u5f9e\u9ad8\u96fb\u5e73\u62c9\u81f3\u4f4e\u96fb\u5e73\u4e00\u500b\u6642\u9418\u9031\u671f\u3002\u7576\u63a5\u6536UART\u6aa2\u6e2c\u5230\u9ad8\u96fb\u58d3\u5230\u4f4e\u96fb\u58d3\u8f49\u63db\u6642\uff0c\u5b83\u958b\u59cb\u4ee5\u6ce2\u7279\u7387\u7684\u983b\u7387\u8b80\u53d6\u6578\u64da\u5e40\u4e2d\u7684\u4f4d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DATA FRAME<\/h3>\n\n\n\n<p>\u6578\u64da\u6846\u5305\u542b\u8981\u50b3\u8f38\u7684\u5be6\u969b\u6578\u64da\u3002\u5982\u679c\u4f7f\u7528\u5947\u5076\u6821\u9a57\u4f4d\uff0c\u5247\u5b83\u53ef\u4ee5\u662f5\u4f4d\u52308\u4f4d\u9577\u3002\u5982\u679c\u4e0d\u4f7f\u7528\u5947\u5076\u6821\u9a57\u4f4d\uff0c\u5247\u6578\u64da\u5e40\u53ef\u4ee5\u662f9\u4f4d\u9577\u3002\u5728\u5927\u591a\u6578\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u9996\u5148\u4ee5\u6700\u4f4e\u6709\u6548\u4f4d\u767c\u9001\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PARITY<\/h3>\n\n\n\n<p>\u5947\u5076\u6821\u9a57\u63cf\u8ff0\u6578\u5b57\u7684\u5747\u52fb\u6027\u6216\u5947\u6578\u3002\u5947\u5076\u6821\u9a57\u4f4d\u662f\u63a5\u6536UART\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u5224\u65b7\u662f\u5426\u6709\u4efb\u4f55\u6578\u64da\u767c\u751f\u8b8a\u5316\u7684\u4e00\u7a2e\u65b9\u6cd5\u3002\u53ef\u4ee5\u901a\u904e\u96fb\u78c1\u8f3b\u5c04\uff0c\u4e0d\u5339\u914d\u7684\u6ce2\u7279\u7387\u6216\u9577\u8ddd\u96e2\u6578\u64da\u50b3\u8f38\u4f86\u6539\u8b8a\u6bd4\u7279\u3002\u63a5\u6536UART\u8b80\u53d6\u6578\u64da\u5e40\u5f8c\uff0c\u5b83\u6703\u8a08\u7b97\u503c\u70ba1\u7684\u4f4d\u6578\uff0c\u4e26\u6aa2\u67e5\u7e3d\u6578\u662f\u5076\u6578\u9084\u662f\u5947\u6578\u3002\u5982\u679c\u5947\u5076\u6821\u9a57\u4f4d\u70ba0\uff08\u5076\u6821\u9a57\uff09\uff0c\u5247\u6578\u64da\u5e40\u4e2d\u76841\u4f4d\u61c9\u7e3d\u8a08\u70ba\u5076\u6578\u3002\u5982\u679c\u5947\u5076\u6821\u9a57\u4f4d\u662f1\uff08\u5947\u6821\u9a57\uff09\uff0c\u5247\u6578\u64da\u5e40\u4e2d\u76841\u4f4d\u61c9\u7e3d\u8a08\u70ba\u5947\u6578\u3002\u7576\u5947\u5076\u6821\u9a57\u4f4d\u8207\u6578\u64da\u5339\u914d\u6642\uff0cUART\u77e5\u9053\u50b3\u8f38\u6c92\u6709\u932f\u8aa4\u3002\u4f46\u5982\u679c\u5947\u5076\u6821\u9a57\u4f4d\u70ba0\uff0c\u5247\u7e3d\u6578\u70ba\u5947\u6578;\u6216\u8005\u5947\u5076\u6821\u9a57\u4f4d\u662f1\uff0c\u4e26\u4e14\u7e3d\u548c\u662f\u5076\u6578\uff0cUART\u77e5\u9053\u6578\u64da\u5e40\u4e2d\u7684\u4f4d\u5df2\u7d93\u6539\u8b8a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">STOP BITS<\/h3>\n\n\n\n<p>\u70ba\u4e86\u767c\u4fe1\u865f\u901a\u77e5\u6578\u64da\u5305\u7684\u7d50\u675f\uff0c\u767c\u9001UART\u5c07\u6578\u64da\u50b3\u8f38\u7dda\u5f9e\u4f4e\u96fb\u58d3\u9a45\u52d5\u81f3\u9ad8\u96fb\u58d3\u81f3\u5c11\u5169\u4f4d\u6301\u7e8c\u6642\u9593\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">STEPS OF UART TRANSMISSION<\/h2>\n\n\n\n<p>1.  \u767c\u9001UART\u5f9e\u6578\u64da\u7e3d\u7dda\u4e26\u884c\u63a5\u6536\u6578\u64da\uff1a <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Gets-Byte-from-Data-Bus.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Gets-Byte-from-Data-Bus-300x291.png\" alt=\"Introduction to UART - Data Transmission Diagram UART Gets Byte from Data Bus\" class=\"wp-image-420915\"\/><\/a><\/figure><\/div>\n\n\n\n<p>2. \u767c\u9001UART\u5c07\u8d77\u59cb\u4f4d\uff0c\u5947\u5076\u6821\u9a57\u4f4d\u548c\u505c\u6b62\u4f4d\u6dfb\u52a0\u5230\u6578\u64da\u5e40\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Adds-Start-Parity-ad-Stop-Bits-2.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Adds-Start-Parity-ad-Stop-Bits-2-300x179.png\" alt=\"Introduction to UART - Data Transmission Diagram UART Adds Start, Parity, ad Stop Bits\" class=\"wp-image-420917\"\/><\/a><\/figure><\/div>\n\n\n\n<p>3. \u6574\u500b\u6578\u64da\u5305\u5f9e\u767c\u9001UART\u4e32\u884c\u767c\u9001\u5230\u63a5\u6536UART\u3002\u63a5\u6536UART\u4ee5\u9810\u5148\u914d\u7f6e\u7684\u6ce2\u7279\u7387\u5c0d\u6578\u64da\u7dda\u9032\u884c\u63a1\u6a23\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-Transmitting-UART-Sends-Data-Packet-Serially-to-Receiving-UART.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-Transmitting-UART-Sends-Data-Packet-Serially-to-Receiving-UART-300x139.png\" alt=\"Introduction to UART - Data Transmission Diagram Transmitting UART Sends Data Packet Serially to Receiving UART\" class=\"wp-image-420919\"\/><\/a><\/figure><\/div>\n\n\n\n<p>4. \u00a0\u63a5\u6536UART\u4e1f\u68c4\u6578\u64da\u5e40\u4e2d\u7684\u8d77\u59cb\u4f4d\uff0c\u5947\u5076\u6821\u9a57\u4f4d\u548c\u505c\u6b62\u4f4d\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Removes-Start-Parity-and-Stop-Bits-2.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-UART-Data-Transmission-Diagram-UART-Removes-Start-Parity-and-Stop-Bits-2-300x179.png\" alt=\"Introduction to UART - Data Transmission Diagram UART Removes Start, Parity, and Stop Bits\" class=\"wp-image-420918\"\/><\/a><\/figure><\/div>\n\n\n\n<p>5.  \u63a5\u6536UART\u5c07\u4e32\u884c\u6578\u64da\u8f49\u63db\u56de\u4e26\u884c\u4e26\u5c07\u5176\u50b3\u8f38\u5230\u63a5\u6536\u7aef\u7684\u6578\u64da\u7e3d\u7dda\uff1a <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/02\/Introduction-to-UART-Data-Transmission-Diagram-Receiving-UART-Sends-Byte-to-Data-Bus-2.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/02\/Introduction-to-UART-Data-Transmission-Diagram-Receiving-UART-Sends-Byte-to-Data-Bus-2-286x300.png\" alt=\"Introduction to UART - Data Transmission Diagram Receiving UART Sends Byte to Data Bus\" class=\"wp-image-420982\"\/><\/a><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">ADVANTAGES AND DISADVANTAGES OF UARTS<\/h2>\n\n\n\n<p>\u6c92\u6709\u901a\u4fe1\u5354\u8b70\u662f\u5b8c\u7f8e\u7684\uff0c\u4f46UART\u975e\u5e38\u64c5\u9577\u4ed6\u5011\u7684\u5de5\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u9ede\u548c\u7f3a\u9ede\uff0c\u53ef\u5e6b\u52a9\u60a8\u78ba\u5b9a\u5b83\u5011\u662f\u5426\u7b26\u5408\u60a8\u9805\u76ee\u7684\u9700\u6c42\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ADVANTAGES<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u53ea\u4f7f\u7528\u5169\u6839\u96fb\u7dda<\/li><li>\u4e0d\u9700\u8981\u6642\u9418\u4fe1\u865f<\/li><li>\u6709\u4e00\u500b\u5947\u5076\u6821\u9a57\u4f4d\u5141\u8a31\u932f\u8aa4\u6aa2\u67e5<\/li><li>\u53ea\u8981\u70ba\u5176\u8a2d\u7f6e\u4e86\u96d9\u65b9\uff0c\u5c31\u53ef\u4ee5\u6539\u8b8a\u6578\u64da\u5305\u7684\u7d50\u69cb<\/li><li>\u8a18\u9304\u826f\u597d\u4e14\u5ee3\u6cdb\u4f7f\u7528\u7684\u65b9\u6cd5<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">DISADVANTAGES<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6578\u64da\u5e40\u7684\u5927\u5c0f\u9650\u5236\u70ba\u6700\u591a9\u4f4d<\/li><li> \u4e0d\u652f\u6301\u591a\u500b\u5f9e\u5c6c\u6216\u591a\u500b\u4e3b\u7cfb\u7d71<\/li><li> \u6bcf\u500bUART\u7684\u6ce2\u7279\u7387\u5fc5\u9808\u572810\uff05\u4e4b\u5167<\/li><\/ul>\n\n\n\n<p>\u7e7c\u7e8c\u672c\u7cfb\u5217\u7684\u7b2c\u4e09\u90e8\u5206\uff0cI2C\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e\u77e5\u8b58\uff0c\u4e86\u89e3\u96fb\u5b50\u8a2d\u5099\u901a\u4fe1\u7684\u53e6\u4e00\u7a2e\u65b9\u5f0f\u3002\u6216\u8005\u5982\u679c\u60a8\u9084\u6c92\u6709\uff0c\u8acb\u67e5\u770b\u7b2c\u4e00\u90e8\u5206\uff0cSPI\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e\u77e5\u8b58\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u7db2\u5740 http:\/\/www.circuitbasics.com\/basics-uart-communica &#8230; <a title=\"UART\u901a\u4fe1\u7684\u57fa\u790e(\u8f49)\" class=\"read-more\" href=\"https:\/\/zechs.taipei\/?p=127\" aria-label=\"\u95b1\u8b80\u3008UART\u901a\u4fe1\u7684\u57fa\u790e(\u8f49)\u3009\u5168\u6587\">\u95b1\u8b80\u5168\u6587<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-127","post","type-post","status-publish","format-standard","hentry","category-tech"],"_links":{"self":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=127"}],"version-history":[{"count":3,"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/127\/revisions"}],"predecessor-version":[{"id":133,"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/127\/revisions\/133"}],"wp:attachment":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}