{"id":97513,"date":"2026-08-29T18:16:55","date_gmt":"2026-08-29T10:16:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/97513.html"},"modified":"2026-08-29T18:16:55","modified_gmt":"2026-08-29T10:16:55","slug":"%e5%8d%8f%e8%ae%ae%e8%a7%a3%e6%9e%90-spi%e7%af%87","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/97513.html","title":{"rendered":"\u534f\u8bae\u89e3\u6790\u2014SPI\u7bc7"},"content":{"rendered":"<h5>\u4ee5\u4e0b\u5185\u5bb9\u662f\u6211\u5bf9\u4e8e\u5b66\u4e60\u7b14\u8bb0\u7684\u6574\u7406\u548c\u8865\u5145&#xff0c;\u4ec5\u4ee3\u8868\u6211\u4e2a\u4eba\u8fd8\u6bd4\u8f83\u6d45\u8584\u7684\u8ba4\u77e5\u89c2\u70b9&#xff0c;\u5982\u6709\u9519\u8bef\u8fd8\u8bf7\u6307\u51fa&#xff0c;\u611f\u8c22\u5404\u4f4d\u3002<\/h5>\n<h2>\u57fa\u7840\u4ecb\u7ecd<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"326\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260829101653-6a92b1957fc6f.png\" width=\"375\" \/><\/p>\n<p><span style=\"color:null\">MOSI \u2013\u4e3b\u673a\u8f93\u51fa \/ \u4ece\u673a\u8f93\u5165\u6570\u636e\u7ebf&#xff0c;\u5171\u7528\u3002<\/span><\/p>\n<p><span style=\"color:null\">MISO \u2013\u4e3b\u673a\u8f93\u5165 \/ \u4ece\u673a\u8f93\u51fa\u6570\u636e\u7ebf&#xff0c;\u5171\u7528\u3002<\/span><\/p>\n<p><span style=\"color:null\">SCK \u2013\u65f6\u949f\u7ebf&#xff0c;\u4e3b\u8bbe\u5907\u8f93\u51fa\u65f6\u949f\u4fe1\u53f7\u81f3\u4ece\u8bbe\u5907&#xff0c;\u5e38\u6001\u4f4e\u7535\u5e73&#xff0c;\u5171\u7528\u3002<\/span><\/p>\n<p><span style=\"color:null\">CS \u2013\u4ece\u8bbe\u5907\u9009\u62e9\u7ebf\u3002\u4e5f\u53eb SS\u3001CSB\u3001CSN\u3001EN \u7b49&#xff0c;\u4f4e\u7535\u5e73\u6709\u6548&#xff0c;\u5355\u72ec<\/span><\/p>\n<p><span style=\"color:null\">\u53d1\u9001\u6570\u636e\u7684\u8fc7\u7a0b&#xff0c;\u4f4e\u4f4d\u5148\u884c\u8fd8\u662f\u9ad8\u4f4d\u5148\u884c\u90fd\u662f\u53ef\u4ee5\u81ea\u7531\u51b3\u5b9a\u7684&#xff0c;\u4e0d\u53d7\u9650\u5236\u3002<\/span><\/p>\n<p><span style=\"color:null\">\u6807\u51c6\u901f\u7387\u53ef\u8fbe10-50MHz&#xff0c;\u9ad8\u901fSPI\u53ef\u4ee5\u8fbe\u5230100M\u4ee5\u4e0a<\/span><\/p>\n<p><span style=\"background-color:white\">SPI \u7684\u5de5\u4f5c\u65f6\u5e8f\u6a21\u5f0f\u7531 CPOL&#xff08;\u65f6\u949f\u6781\u6027&#xff0c;\u51b3\u5b9a\u6570\u636e\u6709\u6548\u7684\u9ad8\u4f4e&#xff09;\u548c CPHA&#xff08;\u65f6\u949f\u76f8\u4f4d&#xff0c;\u8fb9\u7f18\u68c0\u6d4b&#xff09;\u7ec4\u5408\u51b3\u5b9a\u3002\u8fd9\u4e24\u8005\u90fd\u662f\u9488\u5bf9\u4e8eSCK\u800c\u8bbe\u5b9a&#xff0c;\u6781\u6027\u51b3\u5b9a\u4e86\u603b\u7ebf\u5728\u7a7a\u95f2\u60c5\u51b5\u4e0b\u7684\u7535\u5e73&#xff0c;\u76f8\u4f4d\u5219\u662f\u51b3\u5b9a\u4e86\u5728\u7b2c\u4e00\u8fd8\u662f\u7b2c\u4e8c\u4e2a\u8df3\u53d8\u6cbf\u91c7\u6837&#xff0c;\u4e5f\u5c31\u662f\u6211\u4eec\u719f\u6089\u7684\u4e0a\u4e0b\u6cbf\u3002\u5982\u56fe\u6240\u793a&#xff0c;\u65f6\u949f\u7684\u76f8\u4f4d\u7684\u4e0d\u540c\u53ef\u4ee5\u5206\u51fa\u56db\u79cd\u60c5\u51b5\u3002\u57fa\u672c\u60c5\u51b5\u4e0b\u6211\u4eec\u90fd\u662f\u7528\u7684\u7b2c\u4e00\u79cd&#xff0c;\u4f46\u662f\u6709\u4e00\u4e9b\u8bbe\u5907\u4f1a\u51fa\u73b0\u5f3a\u5236\u8981\u6c42\u67d0\u4e00\u6a21\u5f0f\u6216\u8005\u9ed8\u8ba4\u4e0d\u662f0\u6a21\u5f0f\u7684\u60c5\u51b5&#xff0c;\u6211\u4eec\u5c31\u9700\u8981\u6ce8\u610f\u4e3b\u4ece\u6a21\u5f0f\u7684\u4e00\u81f4&#xff0c;\u4e0d\u7136\u6240\u6709\u7684\u6570\u636e\u90fd\u4f1a\u6df7\u4e71\u3002<\/span><\/p>\n<table>\n<tr>\u6a21\u5f0fCPOLCPHA\u7a7a\u95f2\u7535\u5e73\u6570\u636e\u91c7\u6837\u8fb9\u6cbf\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u6a21\u5f0f0 (MODE 0)<\/td>\n<td>0<\/td>\n<td>0<\/td>\n<td>\u4f4e\u7535\u5e73<\/td>\n<td>\u4e0a\u5347\u6cbf<\/td>\n<td>\u6700\u5e38\u7528\u3002\u7a7a\u95f2\u4f4e&#xff0c;\u4e0a\u5347\u6cbf\u91c7\u6837\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u5f0f1 (MODE 1)<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<td>\u4f4e\u7535\u5e73<\/td>\n<td>\u4e0b\u964d\u6cbf<\/td>\n<td>\u7a7a\u95f2\u4f4e&#xff0c;\u4e0b\u964d\u6cbf\u91c7\u6837\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u5f0f2 (MODE 2)<\/td>\n<td>1<\/td>\n<td>0<\/td>\n<td>\u9ad8\u7535\u5e73<\/td>\n<td>\u4e0b\u964d\u6cbf<\/td>\n<td>\u7a7a\u95f2\u9ad8&#xff0c;\u4e0b\u964d\u6cbf\u91c7\u6837\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u5f0f3 (MODE 3)<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>\u9ad8\u7535\u5e73<\/td>\n<td>\u4e0a\u5347\u6cbf<\/td>\n<td>\u7a7a\u95f2\u9ad8&#xff0c;\u4e0a\u5347\u6cbf\u91c7\u6837\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 style=\"margin-left:0px;margin-right:0px\">\u534f\u8bae\u89e3\u6790<\/h3>\n<p>\u5bf9\u4e8e\u6709\u5355\u72ec\u7684CS\u7247\u9009\u4fe1\u53f7\u5f15\u811a\u7684SPI\u534f\u8bae\u800c\u8a00&#xff0c;\u8d77\u59cb\u4e0e\u7ec8\u6b62\u4fe1\u53f7\u5c31\u663e\u5f97\u6734\u5b9e\u65e0\u534e&#xff0c;\u4e3b\u673a\u53ea\u9700\u8981\u62c9\u4f4e\u5bf9\u5e94\u7684\u4ece\u673aCS\u5f15\u811a\u5c31\u4ee3\u8868\u9009\u4e2d&#xff0c;\u677e\u5f00\u6062\u590d\u9ad8\u7535\u5e73\u5c31\u662f\u7ed3\u675f\u901a\u4fe1\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"452\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260829101654-6a92b1960e12c.png\" width=\"1579\" \/><\/p>\n<p style=\"margin-left:0px;margin-right:0px\">\u56fe\u4e2d\u662f\u4e24\u4e2aSPI\u7684\u79fb\u4f4d\u5bc4\u5b58\u5668&#xff0c;\u4e24\u8005\u6570\u636e\u4f20\u8f93\u7684\u8fc7\u7a0b\u5c31\u50cf\u662f\u4e00\u4e2a\u56de\u73af&#xff0c;\u5bc4\u5b58\u5668\u4e2d\u6570\u636e\u5de6\u79fb\u4e00\u4f4d&#xff0c;\u6700\u9ad8\u4f4d\u88ab\u79fb\u52a8\u5230MOSI\u4e0a&#xff0c;\u5bc4\u5b58\u5668\u7a7a\u51fa\u6700\u4f4e\u4f4d&#xff0c;\u540c\u65f6\u4ece\u673a\u5bc4\u5b58\u5668\u4e2d\u6570\u636e\u4e5f\u662f\u5de6\u79fb\u4e00\u4f4d&#xff0c;\u6700\u9ad8\u4f4d\u653e\u7f6e\u4e8eMISO\u53d1\u9001&#xff0c;\u4e5f\u7a7a\u51fa\u6765\u6700\u4f4e\u4f4d&#xff0c;\u4e00\u8f6e\u4ea4\u6362&#xff0c;\u4e24\u8005\u7684\u6570\u636e\u90fd\u5de6\u79fb\u4e86\u4e00\u4f4d&#xff0c;\u540c\u65f6\u6700\u4f4e\u4f4d\u88ab\u5bf9\u65b9\u6700\u9ad8\u4f4d\u7ed9\u8865\u4e0a&#xff0c;\u91cd\u590d\u4ee5\u4e0a\u4ea4\u63628\u6b21&#xff0c;\u4e24\u8005\u7684\u5bc4\u5b58\u5668\u5c31\u5b8c\u6574\u4ea4\u6362\u4e86\u5bf9\u65b9\u7684\u6570\u636e\u8fc7\u6765&#xff0c;\u5bc4\u5b58\u5668\u7684\u6570\u636e\u518d\u88ab\u8bfb\u53d6\u4fdd\u5b58&#xff0c;\u5199\u5165\u65b0\u7684\u6570\u636e\u5c31\u53ef\u4ee5\u5f00\u59cb\u4e0b\u4e00\u8f6e\u7684\u6570\u636e\u4ea4\u6362\u3002<\/p>\n<p style=\"margin-left:0px;margin-right:0px\">\u5177\u4f53\u7684\u53d1\u9001\u5185\u5bb9\u4e0e\u5176\u4ed6\u7684\u534f\u8bae\u5927\u540c\u5c0f\u5f02&#xff0c;\u90fd\u662f\u5148\u53d1\u9001\u64cd\u4f5c\u6307\u4ee4&#xff0c;\u5bf9\u4e8e\u4e0d\u540c\u7684\u5916\u8bbe&#xff0c;\u5176\u5382\u5bb6\u63d0\u4f9b\u7684\u6307\u4ee4\u96c6\u4e0d\u5c3d\u76f8\u540c&#xff0c;\u5728\u6b64\u4e0d\u505a\u8d58\u8ff0&#xff0c;\u53ea\u9700\u8981\u77e5\u9053\u5e94\u8be5\u600e\u4e48\u53d1\u9001\u5373\u53ef&#xff0c;\u53d1\u9001\u5185\u5bb9\u9700\u8981\u770b\u5177\u4f53\u7684\u5916\u8bbe\u64cd\u4f5c\u624b\u518c\u3002<\/p>\n<p style=\"margin-left:0px;margin-right:0px\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"620\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260829101654-6a92b1966724b.png\" width=\"697\" \/><\/p>\n<p style=\"margin-left:0px;margin-right:0px\">\u6700\u5e38\u89c1\u7684\u6a21\u5f0f0&#xff0c;\u7531\u4e8e\u7a7a\u95f2\u65f6\u662f\u4f4e\u7535\u5e73&#xff0c;\u53c8\u5728\u4e0a\u5347\u6cbf\u91c7\u6837&#xff0c;\u5c31\u9700\u8981\u6211\u4eec\u5728CS&#xff08;\u56fe\u4e2d\u662fNSS&#xff09;\u62c9\u4f4e&#xff0c;\u5230\u7b2c\u4e00\u4e2a\u65f6\u949f\u5468\u671f\u6765\u4e4b\u524d&#xff0c;\u63d0\u524d\u628a\u6211\u4eec\u7684\u6570\u636e\u5199\u5165\u6570\u636e\u5bc4\u5b58\u5668\u3002\u5bf9\u4e8e\u6a21\u5f0f2\u4e5f\u662f\u5982\u6b64&#xff0c;\u4e24\u8005\u90fd\u662f\u5728SCL\u7b2c\u4e00\u4e2a\u8df3\u53d8\u7684\u8fb9\u7f18\u5c31\u9700\u8981\u51c6\u5907\u597d\u6570\u636e\u5bc4\u5b58\u5668\u7684\u5185\u5bb9&#xff0c;\u51c6\u5907\u65f6\u95f4\u4e0a\u76f8\u5bf9\u4e8e\u5176\u4f59\u4e24\u8005&#xff08;\u5176\u4f59\u4e24\u8005\u90fd\u662f\u7b2c\u4e8c\u4e2a\u8df3\u53d8\u6cbf&#xff0c;\u65f6\u95f4\u4e0a\u66f4\u4e3a\u5145\u8db3&#xff09;\u800c\u8a00\u8981\u66f4\u77ed&#xff0c;\u5982\u679c\u662f\u786c\u4ef6SPI\u5219\u6ca1\u6709\u592a\u5927\u95ee\u9898&#xff0c;\u4f46\u662f\u5bf9\u4e8e\u8f6f\u4ef6SPI\u800c\u8a00\u5c31\u9700\u8981\u6ce8\u610f\u5ef6\u65f6\u4e86\u3002<\/p>\n<p style=\"margin-left:0px;margin-right:0px\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"205\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260829101654-6a92b196872dc.png\" width=\"943\" \/>\u5728\u9ad8\u7535\u5e73\u671f\u95f4&#xff0c;MOSI\u8bfb\u53d6\u5bc4\u5b58\u5668\u4e2d\u7684\u5185\u5bb9\u5e76\u53d1\u9001&#xff0c;MISO\u5219\u662f\u8bfb\u53d6\u548c\u63a5\u6536&#xff0c;\u5728\u4e00\u4e2a\u5b57\u8282\u7684\u53d1\u9001\u8fc7\u7a0b\u4e2d&#xff0c;\u6570\u636e\u5bc4\u5b58\u5668\u505a\u7684\u4e00\u76f4\u90fd\u662f\u5de6\u79fb\u64cd\u4f5c&#xff08;\u5982\u679c\u4f60\u662f\u4f4e\u4f4d\u5148\u884c\u5219\u662f\u53f3\u79fb&#xff09;&#xff0c;\u4e0d\u9700\u8981\u51c6\u5907\u65b0\u7684\u6570\u636e&#xff0c;\u53ea\u6709\u5728\u53d1\u9001\u5b8c\u4ee5\u540e&#xff0c;\u5bc4\u5b58\u5668\u7684\u6570\u636e\u88ab\u8bfb\u53d6&#xff0c;\u624d\u4f1a\u88ab\u5185\u90e8\u603b\u7ebf\u5e76\u884c\u5730\u4f20\u5165\u65b0\u7684\u6570\u636e\u3002<\/p>\n<p style=\"margin-left:0px;margin-right:0px\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"262\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260829101654-6a92b196a62c5.png\" width=\"849\" \/><\/p>\n<p style=\"margin-left:0px;margin-right:0px\">\u6570\u636e\u63a5\u6536\u4e4b\u540e&#xff0c;\u4e3b\u8981\u8003\u8651\u7684\u662f\u63a5\u6536\u7f13\u51b2\u5668\u6570\u636e\u4fdd\u5b58\u95ee\u9898&#xff0c;\u786c\u4ef6\u8bbe\u8ba1\u4e0a\u79fb\u4f4d\u5bc4\u5b58\u5668\u5168\u90e8\u79fb\u4f4d\u5b8c\u6210\u540e&#xff0c;\u5c31\u4f1a\u88ab\u63a5\u6536\u7f13\u51b2\u5668\u81ea\u52a8\u642c\u8fd0&#xff0c;\u5c31\u4f1a\u5bfc\u81f4\u5982\u679c\u4f60\u5728\u6ca1\u6765\u5f97\u53ca\u62ff\u8d70\u7f13\u51b2\u5668\u4e2d\u7684\u6570\u636e&#xff0c;\u65b0\u7684\u6570\u636e\u5c31\u4f1a\u81ea\u52a8\u8f6c\u8fd0&#xff0c;\u65e7\u6570\u636e\u5c31\u4f1a\u88ab\u8986\u76d6&#xff0c;\u65e0\u6cd5\u627e\u56de\u3002\u7531\u4e8eSPI\u7684\u901f\u7387\u9ad8&#xff0c;\u591a\u6570\u60c5\u51b5\u4e0b\u6211\u4eec\u90fd\u4f1a\u914d\u5408DMA\u6765\u8fdb\u884c\u6570\u636e\u7684\u8f6c\u8fd0&#xff0c;\u4e0d\u9700\u8981CPU\u7684\u9891\u7e41\u6570\u636e\u8bfb\u53d6\u3002<\/p>\n<h2>DMA<\/h2>\n<p>\u5728\u6b64\u53ea\u505a\u7b80\u5355\u7684\u4e86\u89e3&#xff0c;DMA\u6d89\u53ca\u7684\u8303\u56f4\u4f1a\u6bd4\u8f83\u5e7f\u3002<\/p>\n<p>Direct Memory Access&#xff0c;\u89c1\u540d\u77e5\u4e49&#xff0c;\u76f4\u63a5\u5185\u5b58\u8bbf\u95ee\u3002MCU\u5de5\u4f5c\u8fc7\u7a0b\u4e2d&#xff0c;\u9664\u4e86\u81ea\u8eab\u7684\u5927\u91cf\u6570\u636e\u9700\u8981\u5904\u7406&#xff0c;\u8fd8\u4f1a\u6709\u5f88\u591a\u7684\u5916\u8bbe\u6302\u8f7d&#xff0c;\u4ed6\u4eec\u4e5f\u4f1a\u4ea7\u751f\u6570\u636e\u9700\u8981\u8fdb\u884c\u5904\u7406&#xff0c;\u6bcf\u6b21\u6211\u4eec\u53bb\u64cd\u4f5c\u5916\u8bbe\u642c\u8fd0\u6570\u636e\u7684\u65f6\u5019&#xff0c;\u90fd\u662f\u6211\u4eecCPU\u5728\u64cd\u4f5c&#xff0c;\u5982\u679c\u6302\u8f7d\u7684\u5916\u8bbe\u8fc7\u591a&#xff0c;\u6216\u8005\u6570\u636e\u91cf\u5927&#xff0c;CPU\u5728\u5904\u7406\u3001\u8f6c\u8fd0\u5916\u8bbe\u6570\u636e\u4e0a\u5c31\u4f1a\u6d88\u8017\u91cf\u7684\u65f6\u95f4&#xff0c;\u53cd\u800c\u6211\u4eec\u7cfb\u7edf\u539f\u672c\u7684\u5de5\u4f5c\u6ca1\u4eba\u53bb\u505a\u4e86&#xff0c;\u8fd9\u80af\u5b9a\u662f\u4e0d\u884c\u7684\u3002<\/p>\n<p>DMA\u7531\u6b64\u800c\u751f&#xff0c;\u5f88\u591a\u6570\u636e\u5176\u5b9eCPU\u662f\u4e0d\u9700\u8981\u76f4\u63a5\u53bb\u8fdb\u884c\u64cd\u4f5c\u7684&#xff0c;\u6211\u4eec\u53ea\u662f\u8bfb\u53d6\u5373\u53ef&#xff0c;\u90a3\u4e48DMA\u5c31\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u628a\u603b\u7ebf\u4e0a\u7684\u6570\u636e\u81ea\u52a8\u642c\u8fd0\u5230\u6211\u4eec\u6307\u5b9a\u7684\u5730\u65b9&#xff0c;\u5168\u7a0b\u786c\u4ef6\u81ea\u52a8\u5b8c\u6210&#xff0c;\u4e0d\u9700\u8981CPU\u64cd\u4f5c&#xff0c;\u6781\u5927\u7f13\u89e3\u4e86CPU\u7684\u8d1f\u62c5\u3002\u8fd9\u6837\u54ea\u6015\u662f\u5927\u91cf\u6570\u636e\u7684\u60c5\u51b5&#xff0c;\u6bd4\u5982SPI\u7684\u5bc4\u5b58\u5668\u6570\u636e&#xff0c;\u4e0d\u53ca\u65f6\u53d6\u8d70\u5c31\u4f1a\u4e22\u5931&#xff0c;DMA\u5c31\u53ef\u4ee5\u5e2e\u6211\u4eec\u5b58\u5230\u6307\u5b9a\u7684\u5730\u5740&#xff0c;CPU\u8981\u7528\u7684\u65f6\u5019\u5c31\u518d\u53bb\u64cd\u4f5c&#xff0c;\u4e0d\u9700\u8981\u9891\u7e41\u54cd\u5e94\u8fd9\u4e9b\u5916\u8bbe\u7684\u8bf7\u6c42\u4e86\u3002<\/p>\n<h3 style=\"margin-left:0px;margin-right:0px\">\u6742\u9879<\/h3>\n<p>\u6807\u51c6SPI\u4e0d\u53ea\u662f\u53ef\u4ee5\u5168\u53cc\u5de5\u8fd0\u884c&#xff0c;\u8fd8\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\u60c5\u51b5&#xff1b;<\/p>\n<p>\u4e24\u6839\u6570\u636e\u7ebfMOSI&#xff0c;MISO&#xff1a;\u534a\u53cc\u5de5\u6a21\u5f0f\u3002<\/p>\n<p>\u4e00\u6839\u6570\u636e\u7ebf&#xff1a;\u5355\u5de5\u6a21\u5f0f\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u6ca1\u6cd5\u8ba9\u4e24\u6839\u7ebf\u540c\u65f6\u6536\u6216\u8005\u53d1&#xff0c;\u8fd9\u79cd\u60c5\u51b5\u662fDSPI\u7684\u573a\u666f&#xff1b;\u9700\u8981\u6ce8\u610f\u4e0d\u662f\u6240\u6709\u7684SPI\u90fd\u53ef\u4ee5\u53d8\u6210DSPI&#xff0c;DSPI\u9700\u8981\u4e3b\u673a\u548c\u4ece\u673a\u90fd\u652f\u6301\u624d\u53ef\u4ee5\u5207\u6362\u3002DSPI\u5c31\u662f\u7279\u5316\u5199\u6216\u8005\u8bfb\u7684\u80fd\u529b&#xff0c;\u6bd4\u5982\u5bf9\u4e8e\u5b58\u50a8\u82af\u7247\u800c\u8a00&#xff0c;\u6211\u53ea\u8981\u4ed6\u7684\u8bfb&#xff0c;\u90a3\u5c31\u53ef\u4ee5\u4f7f\u7528DSPI&#xff0c;\u901f\u7387\u662f\u7684SPI\u4e24\u500d&#xff0c;\u4ee3\u4ef7\u5c31\u662f\u5931\u53bb\u4e86\u5199\u7684\u80fd\u529b\u3002<\/p>\n<p>\u66f4\u9ad8\u7684\u5e26\u5bbd\u53ea\u80fd\u662f\u8003\u8651\u52a0\u7ebf&#xff0c;DSPI&#xff08;<span style=\"color:#2c3e50\"><span style=\"background-color:white\">Dual SPI Flash&#xff09;\u5c31\u662f\u8ba9\u4e24\u6839\u7ebf\u53d8\u4e3a\u8f93\u51fa&#xff0c;\u4ece\u800c\u53d8\u6210\u534a\u53cc\u5de5\u4f46\u662f\u6570\u636e\u91cf\u500d\u589e&#xff1b;\u800cQSPI\u5219\u662f\u591a\u4e86\u4e24\u4e2a\u6570\u636e\u7ebf&#xff0c;\u901f\u5ea6\u518d\u6b21\u500d\u589e\u3002<\/span><\/span><\/p>\n<h3>\u5c0f\u7ed3<\/h3>\n<p>\u5bf9\u6bd4\u4e8eIIC&#xff0c;SPI\u7684\u4f18\u70b9\u663e\u800c\u6613\u89c1&#xff0c;\u5341\u591a\u500d\u7684\u901f\u5ea6\u5dee\u8ddd&#xff0c;\u4f46\u662f\u4ee3\u4ef7\u4e5f\u662f\u5f88\u660e\u663e\u7684&#xff0c;\u5c31\u662f\u81f3\u5c11\u4e24\u500d\u7684\u5f15\u811a\u6d88\u8017\u3002\u540c\u65f6SPI\u5bf9\u4e8eIIC\u7684\u534f\u8bae\u6765\u8bf4\u6709\u4e86\u66f4\u591a\u7684\u6a21\u5f0f\u9009\u62e9&#xff0c;\u65f6\u949f\u76f8\u4f4d\u7684\u4e0d\u540c\u7ec4\u5408&#xff0c;\u4efb\u610f\u7684\u9ad8\u4f4e\u4f4d\u5148\u884c&#xff0c;\u5168\u53cc\u5de5\u8bbe\u8ba1\u4e0d\u9700\u8981\u6536\u53d1\u90fd\u6324\u5360\u4e00\u6839\u4fe1\u53f7\u7ebf&#xff0c;\u4e5f\u4e0d\u9700\u8981IIC\u90a3\u4e48\u590d\u6742\u7684\u534f\u8bae\u6d41\u7a0b\u3002\u5728\u5b9e\u9645\u7684\u4f7f\u7528\u4e2d&#xff0c;\u5927\u591a\u6570SPI\u7684\u4f7f\u7528\u60c5\u51b5\u90fd\u662f\u5c4f\u5e55\u6216\u8005\u5b58\u50a8\u4e00\u7c7b\u5927\u6570\u636e\u91cf\u9700\u6c42\u7684&#xff0c;IIC\u4e3b\u8981\u5c31\u662f\u4e00\u4e9b\u4f20\u611f\u5668\u4e4b\u7c7b\u7684\u5c0f\u6570\u636e\u9700\u6c42\u60c5\u51b5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u5185\u5bb9\u662f\u6211\u5bf9\u4e8e\u5b66\u4e60\u7b14\u8bb0\u7684\u6574\u7406\u548c\u8865\u5145&#xff0c;\u4ec5\u4ee3\u8868\u6211\u4e2a\u4eba\u8fd8\u6bd4\u8f83\u6d45\u8584\u7684\u8ba4\u77e5\u89c2\u70b9&#xff0c;\u5982\u6709\u9519\u8bef\u8fd8\u8bf7\u6307\u51fa&#xff0c;\u611f\u8c22\u5404\u4f4d\u3002<br \/>\n\u57fa\u7840\u4ecb\u7ecd MOSI \u2013\u4e3b\u673a\u8f93\u51fa \/ \u4ece\u673a\u8f93\u5165\u6570\u636e\u7ebf&#xff0c;\u5171\u7528\u3002<br \/>\nMISO \u2013\u4e3b\u673a\u8f93\u5165 \/ \u4ece\u673a\u8f93\u51fa\u6570\u636e\u7ebf&#xff0c;\u5171\u7528\u3002<br \/>\nSCK \u2013\u65f6\u949f\u7ebf&#xff0c;\u4e3b\u8bbe\u5907\u8f93\u51fa\u65f6\u949f\u4fe1\u53f7\u81f3\u4ece\u8bbe\u5907&#xff0c;\u5e38\u6001\u4f4e\u7535\u5e73&#xff0c;\u5171\u7528\u3002<br \/>\nCS \u2013\u4ece\u8bbe\u5907\u9009\u62e9\u7ebf\u3002\u4e5f\u53eb SS\u3001CSB\u3001CSN\u3001EN \u7b49&#xff0c;\u4f4e\u7535\u5e73\u6709<\/p>\n","protected":false},"author":2,"featured_media":97508,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[941,270,269],"topic":[],"class_list":["post-97513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-fpga","tag-270","tag-269"],"yoast_head":"<!-- This site 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