{"id":109,"date":"2019-06-10T23:49:41","date_gmt":"2019-06-10T15:49:41","guid":{"rendered":"http:\/\/zechs.taipei\/?p=109"},"modified":"2019-06-12T22:50:43","modified_gmt":"2019-06-12T14:50:43","slug":"basics-of-the-spi-communication-protocol%e8%bd%89","status":"publish","type":"post","link":"https:\/\/zechs.taipei\/?p=109","title":{"rendered":"SPI\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e(\u8f49)"},"content":{"rendered":"<p>\u539f\u6587\u9023\u7d50<br> <a href=\"http:\/\/www.circuitbasics.com\/basics-of-the-spi-communication-protocol\/?fbclid=IwAR2yXzVGr3ee5ATva9jnhe2BZptN0GMehZIqwdMxBQxPNw1XE7UC_4rtA8s\">http:\/\/www.circuitbasics.com\/basics-of-the-spi-communication-protocol\/?fbclid=IwAR2yXzVGr3ee5ATva9jnhe2BZptN0GMehZIqwdMxBQxPNw1XE7UC_4rtA8s<\/a> <\/p>\n\n\n\n<h1 class=\"wp-block-heading\">SPI\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e<\/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-of-the-spi-communication-protocol\/#comments\">43&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-SPI-Master-and-Slave.png\" alt=\"Basics of the SPI Communication Protocol\"\/><\/figure>\n\n\n\n<p> \u5c07\u5fae\u63a7\u5236\u5668\u9023\u63a5\u5230\u50b3\u611f\u5668\uff0c\u986f\u793a\u5668\u6216\u5176\u4ed6\u6a21\u584a\u6642\uff0c\u60a8\u662f\u5426\u8003\u616e\u904e\u5169\u500b\u8a2d\u5099\u5982\u4f55\u76f8\u4e92\u901a\u4fe1\uff1f\u4ed6\u5011\u5230\u5e95\u5728\u8aaa\u4ec0\u9ebc\uff1f\u4ed6\u5011\u5982\u4f55\u80fd\u5920\u76f8\u4e92\u7406\u89e3\uff1f <\/p>\n\n\n\n<p>\u96fb\u5b50\u8a2d\u5099\u4e4b\u9593\u7684\u901a\u4fe1\u5c31\u50cf\u4eba\u985e\u4e4b\u9593\u7684\u901a\u4fe1\u3002\u96d9\u65b9\u90fd\u9700\u8981\u8aaa\u540c\u4e00\u7a2e\u8a9e\u8a00\u3002\u5728\u96fb\u5b50\u5b78\u4e2d\uff0c\u9019\u4e9b\u8a9e\u8a00\u7a31\u70ba\u901a\u4fe1\u5354\u8b70\u3002\u5e78\u904b\u7684\u662f\uff0c\u5728\u69cb\u5efa\u5927\u591a\u6578DIY\u96fb\u5b50\u9805\u76ee\u6642\uff0c\u6211\u5011\u53ea\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u901a\u4fe1\u5354\u8b70\u3002\u5728\u672c\u7cfb\u5217\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u8a0e\u8ad6\u4e09\u7a2e\u6700\u5e38\u898b\u5354\u8b70\u7684\u57fa\u790e\u77e5\u8b58\uff1a\u4e32\u884c\u5916\u8a2d\u63a5\u53e3\uff08SPI\uff09\uff0c\u5167\u90e8\u96c6\u6210\u96fb\u8def\uff08I2C\uff09\u548c\u901a\u7528\u7570\u6b65\u63a5\u6536\u5668\/\u767c\u9001\u5668\uff08UART\uff09\u9a45\u52d5\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u6211\u5011\u5c07\u5f9e\u4e00\u4e9b\u95dc\u65bc\u96fb\u5b50\u901a\u4fe1\u7684\u57fa\u672c\u6982\u5ff5\u958b\u59cb\uff0c\u7136\u5f8c\u8a73\u7d30\u89e3\u91cbSPI\u7684\u5de5\u4f5c\u539f\u7406\u3002\u5728\u4e0b\u4e00\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u8a0e\u8ad6UART\u9a45\u52d5\u7684\u901a\u4fe1\uff0c\u5728\u7b2c\u4e09\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u6df1\u5165\u63a2\u8a0eI2C\u3002<\/p>\n\n\n\n<p>SPI\uff0cI2C\u548cUART\u6bd4USB\uff0c\u4ee5\u592a\u7db2\uff0c\u85cd\u7259\u548cWiFi\u7b49\u5354\u8b70\u6162\u5f97\u591a\uff0c\u4f46\u5b83\u5011\u66f4\u7c21\u55ae\uff0c\u4f7f\u7528\u7684\u786c\u4ef6\u548c\u7cfb\u7d71\u8cc7\u6e90\u4e5f\u66f4\u5c11\u3002 SPI\uff0cI2C\u548cUART\u975e\u5e38\u9069\u7528\u65bc\u5fae\u63a7\u5236\u5668\u4e4b\u9593\u4ee5\u53ca\u5fae\u63a7\u5236\u5668\u548c\u50b3\u611f\u5668\u4e4b\u9593\u7684\u901a\u4fe1\uff0c\u5728\u9019\u4e9b\u50b3\u611f\u5668\u4e2d\u4e0d\u9700\u8981\u50b3\u8f38\u5927\u91cf\u9ad8\u901f\u6578\u64da\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SERIAL VS. PARALLEL COMMUNICATION<br>\u4e32\u53e3VS.\u4e26\u884c\u901a\u4fe1<\/h2>\n\n\n\n<p>\u96fb\u5b50\u8a2d\u5099\u901a\u904e\u7269\u7406\u9023\u63a5\u5728\u8a2d\u5099\u4e4b\u9593\u7684\u5c0e\u7dda\u767c\u9001\u6578\u64da\u4f4d\u4f86\u76f8\u4e92\u901a\u4fe1\u3002\u6709\u9ede\u50cf\u4e00\u500b\u5b57\u6bcd\u4e2d\u7684\u5b57\u6bcd\uff0c\u9664\u4e8626\u500b\u5b57\u6bcd\uff08\u82f1\u6587\u5b57\u6bcd\u8868\u4e2d\uff09\uff0c\u4e00\u500b\u4f4d\u662f\u4e8c\u9032\u5236\u7684\uff0c\u53ea\u80fd\u662f1\u62160.\u901a\u904e\u96fb\u58d3\u7684\u5feb\u901f\u8b8a\u5316\uff0c\u4f4d\u5f9e\u4e00\u500b\u8a2d\u5099\u50b3\u8f38\u5230\u53e6\u4e00\u500b\u8a2d\u5099\u3002\u5728\u5de5\u4f5c\u96fb\u58d3\u70ba5V\u7684\u7cfb\u7d71\u4e2d\uff0c0\u4f4d\u4f5c\u70ba0 V\u7684\u77ed\u8108\u885d\u901a\u4fe1\uff0c1\u4f4d\u901a\u904e5 V\u7684\u77ed\u8108\u885d\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u6578\u64da\u4f4d\u53ef\u4ee5\u4e26\u884c\u6216\u4e32\u884c\u5f62\u5f0f\u50b3\u8f38\u3002\u5728\u4e26\u884c\u901a\u4fe1\u4e2d\uff0c\u6578\u64da\u4f4d\u662f\u540c\u6642\u767c\u9001\u7684\uff0c\u6bcf\u500b\u90fd\u901a\u904e\u55ae\u7368\u7684\u7dda\u8def\u3002\u4e0b\u5716\u986f\u793a\u4e86\u4e8c\u9032\u5236\uff0801000011\uff09\u4e2d\u5b57\u6bcd\u201cC\u201d\u7684\u4e26\u884c\u50b3\u8f38\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-SPI-Parallel-Transmission-of-One-Byte-3.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Parallel-Transmission-of-One-Byte-3-300x191.png\" alt=\"Introduction to SPI - Parallel Transmission of One Byte\" class=\"wp-image-420868\"\/><\/a><\/figure><\/div>\n\n\n\n<p>\u5728\u4e32\u884c\u901a\u4fe1\u4e2d\uff0c\u901a\u904e\u55ae\u7dda\u9010\u500b\u767c\u9001\u9019\u4e9b\u4f4d\u3002\u4e0b\u5716\u986f\u793a\u4e86\u4e8c\u9032\u5236\uff0801000011\uff09\u4e2d\u5b57\u6bcd\u201cC\u201d\u7684\u4e32\u884c\u50b3\u8f38\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-SPI-Serial-Transmission-of-the-Letter-C.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Serial-Transmission-of-the-Letter-C-300x92.png\" alt=\"Introduction to SPI - Serial Transmission of one byte\" class=\"wp-image-420865\"\/><\/a><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">INTRODUCTION TO SPI COMMUNICATION<br>SPI\u901a\u4fe1\u7c21\u4ecb<\/h2>\n\n\n\n<p>SPI\u662f\u8a31\u591a\u4e0d\u540c\u8a2d\u5099\u4f7f\u7528\u7684\u901a\u7528\u901a\u4fe1\u5354\u8b70\u3002\u4f8b\u5982\uff0cSD\u5361\u6a21\u584a\uff0cRFID\u8b80\u5361\u5668\u6a21\u584a\u548c2.4 GHz\u7121\u7dda\u767c\u9001\u5668\/\u63a5\u6536\u5668\u90fd\u4f7f\u7528SPI\u8207\u5fae\u63a7\u5236\u5668\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>SPI\u7684\u4e00\u500b\u7368\u7279\u512a\u52e2\u662f\u53ef\u4ee5\u4e0d\u9593\u65b7\u5730\u50b3\u8f38\u6578\u64da\u3002\u53ef\u4ee5\u9023\u7e8c\u6d41\u767c\u9001\u6216\u63a5\u6536\u4efb\u610f\u6578\u91cf\u7684\u6bd4\u7279\u3002\u4f7f\u7528I2C\u548cUART\uff0c\u6578\u64da\u4ee5\u6578\u64da\u5305\u5f62\u5f0f\u767c\u9001\uff0c\u9650\u5236\u70ba\u7279\u5b9a\u7684\u4f4d\u6578\u3002\u555f\u52d5\u548c\u505c\u6b62\u689d\u4ef6\u5b9a\u7fa9\u6bcf\u500b\u6578\u64da\u5305\u7684\u958b\u59cb\u548c\u7d50\u675f\uff0c\u56e0\u6b64\u6578\u64da\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u88ab\u4e2d\u65b7\u3002<\/p>\n\n\n\n<p>\u901a\u904eSPI\u901a\u4fe1\u7684\u8a2d\u5099\u8655\u65bc\u4e3b\u5f9e\u95dc\u4fc2\u3002\u4e3b\u8a2d\u5099\u662f\u63a7\u5236\u8a2d\u5099\uff08\u901a\u5e38\u662f\u5fae\u63a7\u5236\u5668\uff09\uff0c\u800c\u5f9e\u8a2d\u5099\uff08\u901a\u5e38\u662f\u50b3\u611f\u5668\uff0c\u986f\u793a\u5668\u6216\u5b58\u5132\u5668\u82af\u7247\uff09\u63a5\u6536\u4f86\u81ea\u4e3b\u8a2d\u5099\u7684\u6307\u4ee4\u3002\u6700\u7c21\u55ae\u7684SPI\u914d\u7f6e\u662f\u55ae\u4e3b\u6a5f\uff0c\u55ae\u5f9e\u6a5f\u7cfb\u7d71\uff0c\u4f46\u662f\u4e00\u500b\u4e3b\u6a5f\u53ef\u4ee5\u63a7\u5236\u591a\u500b\u5f9e\u6a5f\uff08\u4e0b\u9762\u5c07\u8a73\u7d30\u4ecb\u7d39\uff09\u3002<\/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-SPI-Master-and-Slave.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Master-and-Slave-300x140.png\" alt=\"Introduction to SPI - Master and Slave\" class=\"wp-image-420859\"\/><\/a><\/figure><\/div>\n\n\n\n<p><strong>MOSI (Master Output\/Slave Input)<\/strong>\u00a0\u2013 \u4e3b\u6a5f\u5c07\u6578\u64da\u767c\u9001\u5230\u5f9e\u6a5f\u7684\u7dda\u8def\u3002<\/p>\n\n\n\n<p><strong>MISO (Master Input\/Slave Output)<\/strong>\u00a0\u2013 \u5f9e\u7ad9\u5c07\u6578\u64da\u767c\u9001\u5230\u4e3b\u7ad9\u7684\u884c\u3002<\/p>\n\n\n\n<p><strong>SCLK (Clock)<\/strong>\u00a0\u2013 \u6642\u9418\u4fe1\u865f\u7dda\u3002<\/p>\n\n\n\n<p><strong>SS\/CS (Slave Select\/Chip Select)<\/strong>\u00a0\u2013 \u4e3b\u7dda\u8def\u9078\u64c7\u54ea\u500b\u5f9e\u6a5f\u767c\u9001\u6578\u64da\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-the-SPI-Communication-Protocol-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-the-SPI-Communication-Protocol-Specifications-Table-300x95.png\" alt=\"Basics of the SPI Communication Protocol - Specifications Table\" class=\"wp-image-422519\" width=\"619\" height=\"196\"\/><\/a><\/figure><\/div>\n\n\n\n<p><br>*\u5be6\u969b\u4e0a\uff0c\u5f9e\u8a2d\u5099\u7684\u6578\u91cf\u53d7\u5230\u7cfb\u7d71\u8ca0\u8f09\u96fb\u5bb9\u7684\u9650\u5236\uff0c\u9019\u964d\u4f4e\u4e86\u4e3b\u8a2d\u5099\u5728\u96fb\u58d3\u96fb\u5e73\u4e4b\u9593\u7cbe\u78ba\u5207\u63db\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">HOW SPI\u00a0WORKS<br>SPI\u5982\u4f55\u5de5\u4f5c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">THE CLOCK<br>\u6642\u8108<\/h3>\n\n\n\n<p>\u6642\u9418\u4fe1\u865f\u5c07\u4f86\u81ea\u4e3b\u8a2d\u5099\u7684\u6578\u64da\u4f4d\u8f38\u51fa\u8207\u5f9e\u8a2d\u5099\u7684\u4f4d\u63a1\u6a23\u540c\u6b65\u3002\u5728\u6bcf\u500b\u6642\u9418\u9031\u671f\u50b3\u8f38\u4e00\u4f4d\u6578\u64da\uff0c\u56e0\u6b64\u6578\u64da\u50b3\u8f38\u7684\u901f\u5ea6\u7531\u6642\u9418\u4fe1\u865f\u7684\u983b\u7387\u6c7a\u5b9a\u3002\u7531\u65bc\u4e3b\u8a2d\u5099\u914d\u7f6e\u4e26\u751f\u6210\u6642\u9418\u4fe1\u865f\uff0c\u56e0\u6b64SPI\u59cb\u7d42\u59cb\u7d42\u555f\u52d5SPI\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u8a2d\u5099\u5171\u4eab\u6642\u9418\u4fe1\u865f\u7684\u4efb\u4f55\u901a\u4fe1\u5354\u8b70\u7a31\u70ba\u540c\u6b65\u3002 SPI\u662f\u4e00\u7a2e\u540c\u6b65\u901a\u4fe1\u5354\u8b70\u3002\u9084\u6709\u4e00\u4e9b\u4e0d\u4f7f\u7528\u6642\u9418\u4fe1\u865f\u7684\u7570\u6b65\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5728UART\u901a\u4fe1\u4e2d\uff0c\u96d9\u65b9\u90fd\u8a2d\u7f6e\u70ba\u9810\u5148\u914d\u7f6e\u7684\u6ce2\u7279\u7387\uff0c\u8a72\u6ce2\u7279\u7387\u6c7a\u5b9a\u6578\u64da\u50b3\u8f38\u7684\u901f\u5ea6\u548c\u6642\u9593\u3002<\/p>\n\n\n\n<p>SPI\u4e2d\u7684\u6642\u9418\u4fe1\u865f\u53ef\u4ee5\u4f7f\u7528\u6642\u9418\u6975\u6027\u548c\u6642\u9418\u76f8\u4f4d\u7684\u5c6c\u6027\u9032\u884c\u4fee\u6539\u3002\u9019\u5169\u500b\u5c6c\u6027\u5354\u540c\u5de5\u4f5c\u4ee5\u5b9a\u7fa9\u4f55\u6642\u8f38\u51fa\u4f4d\u4ee5\u53ca\u4f55\u6642\u5c0d\u5b83\u5011\u9032\u884c\u63a1\u6a23\u3002\u6642\u9418\u6975\u6027\u53ef\u7531\u4e3b\u6a5f\u8a2d\u7f6e\uff0c\u4ee5\u5141\u8a31\u5728\u6642\u9418\u9031\u671f\u7684\u4e0a\u5347\u6cbf\u6216\u4e0b\u964d\u6cbf\u8f38\u51fa\u548c\u63a1\u6a23\u4f4d\u3002\u53ef\u4ee5\u8a2d\u7f6e\u6642\u9418\u76f8\u4f4d\uff0c\u4ee5\u4fbf\u5728\u6642\u9418\u9031\u671f\u7684\u7b2c\u4e00\u500b\u908a\u6cbf\u6216\u7b2c\u4e8c\u500b\u908a\u6cbf\u4e0a\u9032\u884c\u8f38\u51fa\u548c\u63a1\u6a23\uff0c\u7121\u8ad6\u662f\u4e0a\u5347\u9084\u662f\u4e0b\u964d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SLAVE SELECT<\/h3>\n\n\n\n<p>\u4e3b\u8a2d\u5099\u53ef\u4ee5\u901a\u904e\u5c07\u5f9e\u8a2d\u5099\u7684CS \/ SS\u7dda\u8a2d\u7f6e\u70ba\u4f4e\u96fb\u58d3\u96fb\u5e73\u4f86\u9078\u64c7\u8981\u901a\u8a71\u7684\u5f9e\u8a2d\u5099\u3002\u5728\u7a7a\u9592\uff0c\u975e\u50b3\u8f38\u72c0\u614b\u4e2d\uff0c\u5f9e\u9078\u64c7\u7dda\u4fdd\u6301\u5728\u9ad8\u96fb\u58d3\u96fb\u5e73\u3002\u4e3b\u6a5f\u4e0a\u53ef\u80fd\u6709\u591a\u500bCS \/ SS\u5f15\u8173\uff0c\u5141\u8a31\u591a\u500b\u5f9e\u6a5f\u4e26\u806f\u9023\u63a5\u3002\u5982\u679c\u53ea\u6709\u4e00\u500bCS \/ SS\u5f15\u8173\uff0c\u5247\u53ef\u4ee5\u901a\u904e\u83ca\u82b1\u93c8\u5c07\u591a\u500b\u5f9e\u5668\u4ef6\u9023\u63a5\u5230\u4e3b\u5668\u4ef6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MULTIPLE SLAVES<\/h3>\n\n\n\n<p>SPI\u53ef\u4ee5\u8a2d\u7f6e\u70ba\u4f7f\u7528\u55ae\u500b\u4e3b\u8a2d\u5099\u548c\u55ae\u500b\u5f9e\u8a2d\u5099\u9032\u884c\u64cd\u4f5c\uff0c\u4e26\u4e14\u53ef\u4ee5\u901a\u904e\u7531\u55ae\u500b\u4e3b\u8a2d\u5099\u63a7\u5236\u7684\u591a\u500b\u5f9e\u8a2d\u5099\u9032\u884c\u8a2d\u7f6e\u3002\u6709\u5169\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5c07\u591a\u500b\u5f9e\u7ad9\u9023\u63a5\u5230\u4e3b\u7ad9\u3002\u5982\u679c\u4e3b\u6a5f\u6709\u591a\u500b\u5f9e\u6a5f\u9078\u64c7\u5f15\u8173\uff0c\u5247\u5f9e\u6a5f\u53ef\u4ee5\u4e26\u806f\u9023\u63a5\uff0c\u5982\u4e0b\u6240\u793a\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-SPI-Multiple-Slave-Configuration-Separate-Slave-Select.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Multiple-Slave-Configuration-Separate-Slave-Select-293x300.png\" alt=\"Introduction to SPI - Multiple Slave Configuration Separate Slave Select\" class=\"wp-image-420862\"\/><\/a><\/figure><\/div>\n\n\n\n<p>\u5982\u679c\u53ea\u6709\u4e00\u500b\u5f9e\u9078\u64c7\u5f15\u8173\u53ef\u7528\uff0c\u5247\u5f9e\u5668\u4ef6\u53ef\u4ee5 daisy-chained \uff0c\u5982\u4e0b\u6240\u793a\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-SPI-Multiple-Slave-Configuration-Daisy-Chained.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Multiple-Slave-Configuration-Daisy-Chained-295x300.png\" alt=\"Introduction to SPI - Multiple Slave Configuration Daisy Chained\" class=\"wp-image-420863\"\/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">MOSI AND MISO<\/h3>\n\n\n\n<p>\u4e3b\u6a5f\u901a\u904eMOSI\u7dda\u4e32\u884c\u767c\u9001\u6578\u64da\u5230\u5f9e\u6a5f\u3002\u5f9e\u5668\u4ef6\u63a5\u6536MOSI\u5f15\u8173\u4e0a\u7684\u4e3b\u5668\u4ef6\u767c\u9001\u7684\u6578\u64da\u3002\u5f9e\u4e3b\u8a2d\u5099\u767c\u9001\u5230\u5f9e\u8a2d\u5099\u7684\u6578\u64da\u901a\u5e38\u9996\u5148\u4ee5\u6700\u9ad8\u6709\u6548\u4f4d\u767c\u9001\u3002<\/p>\n\n\n\n<p>\u5f9e\u6a5f\u9084\u53ef\u4ee5\u901a\u904e\u4e32\u884c\u7684MISO\u7dda\u8def\u5c07\u6578\u64da\u767c\u9001\u56de\u4e3b\u6a5f\u3002\u5f9e\u5f9e\u8a2d\u5099\u767c\u9001\u56de\u4e3b\u8a2d\u5099\u7684\u6578\u64da\u901a\u5e38\u9996\u5148\u4ee5\u6700\u4f4e\u6709\u6548\u4f4d\u767c\u9001\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">STEPS OF SPI DATA TRANSMISSION<\/h2>\n\n\n\n<p>1.  \u4e3b\u6a5f\u8f38\u51fa\u6642\u9418\u4fe1\u865f\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-SPI-Data-Transmission-Diagram-Clock-Signal.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Data-Transmission-Diagram-Clock-Signal-300x77.png\" alt=\"Introduction to SPI - Data Transmission Diagram Clock Signal\" class=\"wp-image-420909\" width=\"545\" height=\"140\"\/><\/a><\/figure><\/div>\n\n\n\n<p>2.  \u4e3b\u5668\u4ef6\u5c07SS \/ CS\u5f15\u8173\u5207\u63db\u5230\u4f4e\u96fb\u58d3\u72c0\u614b\uff0c\u5f9e\u800c\u6fc0\u6d3b\u5f9e\u5668\u4ef6\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-SPI-Data-Transmission-Diagram-Slave-Select-Activation.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Data-Transmission-Diagram-Slave-Select-Activation-300x77.png\" alt=\"Introduction to SPI - Data Transmission Diagram Slave Select Activation\" class=\"wp-image-420910\" width=\"538\" height=\"138\"\/><\/a><\/figure><\/div>\n\n\n\n<p>3. \u4e3b\u8a2d\u5099\u6cbfMOSI\u7dda\u4e00\u6b21\u4e00\u4f4d\u5730\u5411\u5f9e\u8a2d\u5099\u767c\u9001\u6578\u64da\u3002\u5f9e\u6a5f\u5728\u63a5\u6536\u5230\u7684\u4f4d\u6642\u8b80\u53d6\u9019\u4e9b\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-SPI-Data-Transmission-Diagram-Master-to-Slave-Data-Transfer.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Data-Transmission-Diagram-Master-to-Slave-Data-Transfer-300x77.png\" alt=\"Introduction to SPI - Data Transmission Diagram Master to Slave Data Transfer\" class=\"wp-image-420911\" width=\"534\" height=\"137\"\/><\/a><\/figure><\/div>\n\n\n\n<p>4.  \u5982\u679c\u9700\u8981\u97ff\u61c9\uff0c\u5247\u5f9e\u5668\u4ef6\u6cbf\u8457MISO\u7dda\u4e00\u6b21\u4e00\u4f4d\u5730\u5411\u4e3b\u5668\u4ef6\u8fd4\u56de\u6578\u64da\u3002\u4e3b\u6a5f\u5728\u63a5\u6536\u5230\u7684\u4f4d\u6642\u8b80\u53d6\u9019\u4e9b\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-SPI-Data-Transmission-Diagram-Slave-to-Master-Data-Transfer.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.circuitbasics.com\/wp-content\/uploads\/2016\/01\/Introduction-to-SPI-Data-Transmission-Diagram-Slave-to-Master-Data-Transfer-300x77.png\" alt=\"Introduction to SPI - Data Transmission Diagram Slave to Master Data Transfer\" class=\"wp-image-420912\" width=\"522\" height=\"134\"\/><\/a><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"> SPI\u7684\u512a\u9ede\u548c\u7f3a\u9ede <\/h2>\n\n\n\n<p> \u4f7f\u7528SPI\u6709\u4e00\u4e9b\u512a\u9ede\u548c\u7f3a\u9ede\uff0c\u5982\u679c\u5728\u4e0d\u540c\u7684\u901a\u4fe1\u5354\u8b70\u4e4b\u9593\u9032\u884c\u9078\u64c7\uff0c\u60a8\u61c9\u8a72\u6839\u64da\u9805\u76ee\u7684\u8981\u6c42\u77e5\u9053\u4f55\u6642\u4f7f\u7528SPI\uff1a <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ADVANTAGES \u597d\u8655 <\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6c92\u6709\u555f\u52d5\u548c\u505c\u6b62\u4f4d\uff0c\u56e0\u6b64\u6578\u64da\u53ef\u4ee5\u9023\u7e8c\u6d41\u5f0f\u50b3\u8f38\u800c\u4e0d\u6703\u4e2d\u65b7<\/li><li> \u6c92\u6709\u5fa9\u96dc\u7684\u5f9e\u6a5f\u5c0b\u5740\u7cfb\u7d71\uff0c\u5982I2C<\/li><li> \u6bd4I2C\u66f4\u9ad8\u7684\u6578\u64da\u50b3\u8f38\u901f\u7387\uff08\u5e7e\u4e4e\u5feb\u5169\u500d\uff09<\/li><li> \u55ae\u7368\u7684MISO\u548cMOSI\u7dda\uff0c\u56e0\u6b64\u53ef\u4ee5\u540c\u6642\u767c\u9001\u548c\u63a5\u6536\u6578\u64da<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">DISADVANTAGES \u52a3\u52e2 <\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4f7f\u7528\u56db\u6839\u7dda\uff08I2C\u548cUART\u4f7f\u7528\u5169\u6839\uff09<\/li><li>\u7121\u6cd5\u78ba\u8a8d\u6578\u64da\u5df2\u6210\u529f\u63a5\u6536\uff08I2C\u5df2\u57f7\u884c\u6b64\u64cd\u4f5c\uff09<\/li><li>\u6c92\u6709\u5f62\u5f0f\u7684\u932f\u8aa4\u6aa2\u67e5\uff0c\u5982UART\u4e2d\u7684\u5947\u5076\u6821\u9a57\u4f4d<\/li><li>\u50c5\u5141\u8a31\u55ae\u500b\u4e3b\u4eba<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u9023\u7d50 http:\/\/www.circuitbasics.com\/basics-of-the-spi-com &#8230; <a title=\"SPI\u901a\u4fe1\u5354\u8b70\u7684\u57fa\u790e(\u8f49)\" class=\"read-more\" href=\"https:\/\/zechs.taipei\/?p=109\" aria-label=\"\u95b1\u8b80\u3008SPI\u901a\u4fe1\u5354\u8b70\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-109","post","type-post","status-publish","format-standard","hentry","category-tech"],"_links":{"self":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/109","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=109"}],"version-history":[{"count":4,"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":131,"href":"https:\/\/zechs.taipei\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions\/131"}],"wp:attachment":[{"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zechs.taipei\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}