{"id":450,"date":"2024-03-30T15:02:24","date_gmt":"2024-03-30T07:02:24","guid":{"rendered":"https:\/\/3dok.biz\/wordpress\/?p=450"},"modified":"2024-03-30T21:48:26","modified_gmt":"2024-03-30T13:48:26","slug":"esp32-%e5%ba%8f%e5%88%97%e5%91%a8%e9%82%8a%e4%bb%8b%e9%9d%a2-spi","status":"publish","type":"post","link":"https:\/\/3dok.biz\/wordpress\/?p=450","title":{"rendered":"ESP32 \u5e8f\u5217\u5468\u908a\u4ecb\u9762 SPI"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"450\" class=\"elementor elementor-450\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-91d15aa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"91d15aa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-766e668\" data-id=\"766e668\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5eccd4c elementor-widget elementor-widget-text-editor\" data-id=\"5eccd4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"czr-hot-crumble container page-breadcrumbs\" role=\"navigation\"><div class=\"row\"><nav>\u539f\u6587:\u00a0 <a href=\"https:\/\/www.circuspi.com\/index.php\/2023\/12\/07\/esp32-spi-introduction\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.circuspi.com\/index.php\/2023\/12\/07\/esp32-spi-introduction\/<\/a><br \/><br \/><\/nav><nav><\/nav><nav><\/nav><nav class=\"breadcrumbs col-12\"><span class=\"trail-begin\"><a class=\"trail-begin\" title=\"CIRCUS Pi\" href=\"https:\/\/www.circuspi.com\/\" rel=\"home\">\u9996\u9801<\/a><\/span>\u00a0<span class=\"sep\">\u00bb<\/span>\u00a0<a title=\"\u6280\u8853\u6587\u7ae0\" href=\"https:\/\/www.circuspi.com\/index.php\/category\/technical-articles\/\">\u6280\u8853\u6587\u7ae0<\/a>\u00a0<span class=\"sep\">\u00bb<\/span>\u00a0<a title=\"ESP32 \u7cfb\u5217\" href=\"https:\/\/www.circuspi.com\/index.php\/category\/technical-articles\/esp32-%e7%b3%bb%e5%88%97\/\">ESP32 \u7cfb\u5217<\/a>\u00a0<span class=\"sep\">\u00bb<\/span>\u00a0<span class=\"trail-end\">ESP32\u6559\u5b78\u7cfb\u5217(\u516b)\uff1a\u5e8f\u5217\u5468\u908a\u4ecb\u9762(SPI)<\/span><\/nav><\/div><\/div><div class=\"container\" role=\"main\"><div class=\"flex-row row column-content-wrapper\"><div id=\"content\" class=\"col-12 article-container\"><article id=\"post-20807\" class=\"post-20807 post type-post status-publish format-standard has-post-thumbnail category-esp32- category-technical-articles czr-hentry\"><header class=\"entry-header \"><div class=\"entry-header-inner\"><div class=\"tax__container post-info entry-meta\"><a class=\"tax__link\" title=\"\u53c3\u770b\u6240\u6709\u6587\u7ae0 ESP32 \u7cfb\u5217\" href=\"https:\/\/www.circuspi.com\/index.php\/category\/technical-articles\/esp32-%e7%b3%bb%e5%88%97\/\">ESP32 \u7cfb\u5217<\/a><a class=\"tax__link\" title=\"\u53c3\u770b\u6240\u6709\u6587\u7ae0 \u6280\u8853\u6587\u7ae0\" href=\"https:\/\/www.circuspi.com\/index.php\/category\/technical-articles\/\">\u6280\u8853\u6587\u7ae0<\/a><\/div><div class=\"tax__container post-info entry-meta\">\u00a0<\/div><h1 class=\"entry-title\">ESP32\u6559\u5b78\u7cfb\u5217(\u516b)\uff1a\u5e8f\u5217\u5468\u908a\u4ecb\u9762(SPI)<\/h1><div>\u00a0<\/div><div class=\"header-bottom\"><div class=\"post-info\"><span class=\"entry-meta\"><span class=\"author-meta\">by\u00a0<span class=\"author vcard\"><span class=\"author_name\"><a class=\"url fn n\" title=\"\u53c3\u770b\u6240\u6709\u6587\u7ae0 \u6839\" href=\"https:\/\/www.circuspi.com\/index.php\/author\/root\/\" rel=\"author\">\u6839<\/a><\/span><\/span><\/span><span class=\"v-separator\">|<\/span>\u5df2\u767c\u8868\u00a0<a title=\"\u4e0b\u5348 4:11\" href=\"https:\/\/www.circuspi.com\/index.php\/2023\/12\/07\/\" rel=\"bookmark\"><time class=\"entry-date published updated\" datetime=\"2023-12-07T16:11:56+08:00\">2023 \u5e74 12 \u6708 7 \u65e5<\/time><\/a><span class=\"v-separator\">&#8211;<\/span>Updated\u00a0<a title=\"\u4e0b\u5348 4:11\" href=\"https:\/\/www.circuspi.com\/index.php\/2023\/12\/07\/\" rel=\"bookmark\"><time class=\"entry-date updated\" datetime=\"2023-12-07T16:11:58+08:00\">2023 \u5e74 12 \u6708 7 \u65e5<\/time><\/a><\/span><\/div><\/div><\/div><\/header><div class=\"post-entry tc-content-inner\"><section class=\"post-content entry-content \"><div class=\"czr-wp-the-content\"><figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-20826\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/1000x526_1.jpg\" alt=\"\" width=\"1000\" height=\"526\" \/><\/figure><h2 class=\"wp-block-heading\">\u524d\u8a00<\/h2><p>\u9019\u6b21\u6211\u5011\u8981\u4ecb\u7d39\u7684\u4e3b\u984c\u662fSPI\u901a\u8a0a\u754c\u9762\u3002\u4e00\u822c\u5728\u4f7f\u7528SPI\u4ecb\u9762\u50b3\u8f38\u7684\u611f\u6e2c\u5668\u6216\u88dd\u7f6e\u6642\uff0c\u901a\u5e38\u9084\u6703\u518d\u53e6\u5916\u642d\u914d\u5176\u4ed6\u51fd\u5f0f\u5eab\uff0c\u8207ESP32\u539f\u751f\u7684SPI\u95dc\u9023\u4e0d\u5927\uff0c\u6709\u95dc\u5be6\u969b\u61c9\u7528\u7684\u5167\u5bb9\u6211\u5011\u6703\u7559\u5230\u4e0b\u4e00\u7bc7\u518d\u9032\u884c\u8aaa\u660e\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528ESP32\u7684SPI\uff0c\u4e26\u4e14\u8aaa\u660e\u5982\u4f55\u5728\u5169\u7247ESP32\u958b\u767c\u677f\u4e4b\u9593\u4f7f\u7528SPI\u901a\u8a0a\u3002<\/p><p>\u00a0<\/p><h2 class=\"wp-block-heading\">\u4ec0\u9ebc\u662fSPI\uff1f<\/h2><p>\u5e8f\u5217\u5468\u908a\u4ecb\u9762\uff08Serial Peripheral Interface\uff0c SPI\uff09\uff0c\u662f\u5fae\u63a7\u5236\u5668\u5e38\u7528\u7684\u4e00\u7a2e\u5168\u96d9\u5de5\u4e32\u5217\u540c\u6b65\u901a\u8a0a\u754c\u9762\uff0c\u9069\u7528\u65bc\u8207\u5468\u908a\u8a2d\u5099\u9032\u884c\u77ed\u8ddd\u96e2\u4e14\u9ad8\u901f\u7684\u50b3\u8f38\u3002\u5b83\u63a1\u7528\u4e86\u4e3b\u5f9e\u5f0f\u67b6\u69cb\uff0c\u7531\u4e00\u500b\u4e3b\u8a2d\u5099\u548c\u4e00\u81f3\u591a\u500b\u5468\u908a\u8a2d\u5099\u7d44\u6210\uff0c\u6700\u65e9\u7531\u6469\u6258\u7f85\u62c9\uff08Motorola\uff09\u516c\u53f8\u57281980\u5e74\u4ee3\u4e2d\u671f\u958b\u767c\u3002<\/p><p>\u5728Flash\uff08\u5feb\u9583\u8a18\u61b6\u9ad4\uff09\u3001EEPROM\u3001RTC\uff08\u5be6\u6642\u6642\u9418\uff09\u3001ADC\uff08\u985e\u6bd4\u6578\u4f4d\u8f49\u63db\u5668\uff09\u3001DAC\uff08\u6578\u4f4d\u985e\u6bd4\u8f49\u63db\u5668\uff09\u3001\u6db2\u6676\u986f\u793a\u5668\uff0c\u6216\u662f\u5169\u500b\u5fae\u63a7\u5236\u5668\u9593\u7684\u901a\u8a0a\u90fd\u53ef\u4ee5\u770b\u5230SPI\u7684\u61c9\u7528\u3002\u4f46\u7531\u65bcSPI\u4e0d\u662f\u4e00\u5957\u5177\u6709\u6a19\u6e96\u898f\u7bc4\u7684\u5354\u8b70\uff0c\u5b83\u53ea\u662f\u4e00\u7a2e\u696d\u754c\u6a19\u6e96\uff08de facto standard\uff09\uff0c\u6240\u4ee5\u4e0d\u662f\u6bcf\u500b\u4f7f\u7528SPI\u7684\u8a2d\u5099\u90fd\u7528\u76f8\u540c\u7684\u65b9\u5f0f\u5be6\u73fe\u3002<\/p><figure class=\"wp-block-pullquote\"><blockquote><p><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\" alt=\"\ud83d\udca1\" \/><span class=\"notion-enable-hover\" data-token-index=\"0\">Tips:<\/span>\u00a0\u904e\u53bb SPI \u5e38\u4ee5 Master \u8207 Slave \u7a31\u547c\u4e3b\u5f9e\u7aef\u7684\u8a2d\u5099\uff0c\u4f46\u662f\u958b\u6e90\u786c\u9ad4\u806f\u76df\uff08Open Source Hardware Association, OSHWA\uff09\u5728<a class=\"notion-link-token notion-focusable-token notion-enable-hover\" tabindex=\"0\" href=\"https:\/\/www.oshwa.org\/a-resolution-to-redefine-spi-signal-names\/\" rel=\"noopener noreferrer\" data-token-index=\"2\"><span class=\"link-annotation-unknown-block-id--206015494\">A Resolution to Redefine SPI Signal Names<\/span><\/a>\u9019\u7bc7\u6587\u7ae0\u4e2d\u5efa\u8b70\u61c9\u8a72\u4f7f\u7528\u65b0\u7684\u547d\u540d\u65b9\u5f0f\uff0c\u4ee5\u00a0<span class=\"notion-enable-hover\" data-token-index=\"4\">Controller \u4ee3\u66ff Master<\/span>\uff0c<span class=\"notion-enable-hover\" data-token-index=\"6\">Peripheral \u4ee3\u66ffSlave<\/span>\uff0cSCK\uff08Serial Clock\uff09\u7684\u7a31\u547c\u7dad\u6301\u4e0d\u8b8a\u3002<\/p><\/blockquote><\/figure><p>\u65b0\u820a\u63a5\u8173\u540d\u7a31\u5c0d\u7167\uff1a<\/p><figure class=\"wp-block-table\"><table><thead><tr><th>\u63a5\u8173\u540d\u7a31\uff08\u820a\uff09<\/th><th>\u63a5\u8173\u540d\u7a31\uff08\u65b0\uff09<\/th><\/tr><\/thead><tbody><tr><td>MISO (Master In Slave Out)<\/td><td>CIPO (Controller In Peripheral Out)<\/td><\/tr><tr><td>MOSI (Master Out Slave In)<\/td><td>COPI (Controller Out Peripheral In)<\/td><\/tr><tr><td>SS (Slave Select Pin)<\/td><td>CS (Chip Select Pin)<\/td><\/tr><\/tbody><\/table><\/figure><p>SPI\u901a\u8a0a\u63a1\u7528\u4e3b\u5f9e\u5f0f\u67b6\u69cb\uff0c\u7531\u4e3b\u8a2d\u5099\u767c\u8d77\u50b3\u8f38\u8a0a\u865f\uff0c\u7d71\u4e00\u63a7\u5236\u6240\u6709\u88dd\u7f6e\u50b3\u8f38\uff0c\u4e26\u63a7\u5236\u8a2d\u5099\u8207\u8a2d\u5099\u4e4b\u9593\u767c\u9001\u548c\u8b80\u53d6\u8cc7\u6599\u7684\u6642\u6a5f\u3002\u6240\u6709\u8a2d\u5099\u90fd\u5171\u4eab\u540c\u4e00\u500b\u7531\u4e3b\u8a2d\u5099\u63d0\u4f9b\u7684\u6642\u8108(clock)\u8a0a\u865f\u3002<\/p><figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" class=\"wp-image-20809\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/1280px-SPI_three_slaves.svg.png\" alt=\"\" width=\"546\" height=\"433\" \/><p>\u00a0<\/p><figcaption class=\"wp-element-caption\">SPI \u532f\u6d41\u6392\u3002\uff08\u5716\u7247\u53d6\u81ea<a href=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/e\/ed\/SPI_single_slave.svg\/525px-SPI_single_slave.svg.png\">\u7dad\u57fa\u767e\u79d1<\/a>\uff09<\/figcaption><\/figure><p>\u4e00\u822cSPI\u6703\u67094\u689d\u8cc7\u6599\u7dda\uff0c\u5206\u5225\u662f\uff1a<\/p><ul><li>CIPO\/MISO: \u5468\u908a\u88dd\u7f6e\u8f38\u51fa\u8cc7\u6599\u5230\u63a7\u5236\u5668\u3002<\/li><li>COPI\/MOSI: \u63a7\u5236\u5668\u8f38\u51fa\u8cc7\u6599\u5230\u5468\u908a\u88dd\u7f6e\u3002<\/li><li>SCK\/SCLK\uff08Serial Clock\uff09: \u4e32\u5217\u6642\u8108\uff0c\u7531\u4e3b\u8a2d\u5099\u767c\u51fa\u3002\u6642\u8108\u901f\u5ea6\u4e5f\u6c7a\u5b9a\u4e86\u50b3\u8f38\u901f\u5ea6\u3002<\/li><li>CS\/SS: \u6676\u7247\u9078\u64c7\u63a5\u8173\uff0c\u4f4e\u96fb\u4f4d\u9a45\u52d5\u3002\u7576\u540c\u4e00\u689dSPI Bus\u4e0a\u6709\u591a\u500b\u8a2d\u5099\u6642\uff0c\u4e3b\u8a2d\u5099\u6703\u7528CS\u63a5\u8173\u9078\u64c7\u8981\u9032\u884c\u901a\u8a0a\u7684\u5468\u908a\u8a2d\u5099\u3002<\/li><\/ul><h3 class=\"wp-block-heading\">SPI\u6a21\u5f0f<\/h3><p>\u7576\u8a2d\u5099\u50b3\u9001\u8cc7\u6599\u6642\uff0c\u5728\u4ec0\u9ebc\u6642\u9593\u9ede\u8b80\u53d6\u8a0a\u865f\uff0c\u6703\u76f4\u63a5\u7684\u5f71\u97ff\u8a2d\u5099\u4e4b\u9593\u7684\u901a\u8a0a\u5167\u5bb9\u3002\u901a\u5e38\u5728SPI\u4e2d\uff0c\u6703\u4ee5\u6a21\u5f0f\uff08Mode\uff09\u4f86\u5b9a\u7fa9\u3002\u6a21\u5f0f\u7531\u5169\u500b\u689d\u4ef6\u69cb\u6210\uff1a\u6642\u8108\u76f8\u4f4d\uff08clock phase\uff09\u8207\u6642\u8108\u6975\u6027\uff08clock polarity\uff09\u3002<\/p><ul><li>\u6642\u8108\u76f8\u4f4d\uff08CPHA\uff09\uff1a\u9078\u64c7\u8a0a\u865f\u8981\u5728SCLK\u7684\u4e0a\u5347\u7de3\u6216\u662f\u4e0b\u964d\u7de3\u9032\u884c\u63a1\u6a23\u3002 CPHA=0: \u4e0a\u5347\u7de3\uff1bCPHA = 1: \u4e0b\u964d\u7de3\u3002<\/li><li>\u6642\u8108\u6975\u6027\uff08CPOL\uff09\uff1a\u7576SPI\u5728\u9592\u7f6e\u72c0\u614b\u6642\uff0cSCLK\u7684\u96fb\u4f4d\u72c0\u614b\u3002 \uff08\u8a3b\uff1a\u9592\u7f6e\u72c0\u614b\u6307\u7684\u662fCS\u63a5\u8173\u5728\u50b3\u8f38\u958b\u59cb\u8207\u50b3\u8f38\u7d50\u675f\u6642\u7684\u72c0\u614b\uff09 CPOL = 0: \u9592\u7f6e\u6642\u4fdd\u6301\u4f4e\u96fb\u4f4d\uff1bCPOL = 1: \u9592\u7f6e\u6642\u4fdd\u6301\u9ad8\u96fb\u4f4d\u3002<\/li><\/ul><p>\u6839\u64da\u76f8\u4f4d\u548c\u6975\u6027\u7684\u8b8a\u5316\uff0cSPI\u5c31\u6703\u7522\u751f4\u7a2e\u4e0d\u540c\u7684\u50b3\u8f38\u6a21\u5f0f\uff1a<\/p><p>\u00a0<\/p><figure class=\"wp-block-table\"><table><thead><tr><th>\u6a21\u5f0f<\/th><th>CLOCK POLARITY (CPOL)\u00a0<\/th><th>CLOCK PHASE (CPHA)<\/th><\/tr><\/thead><tbody><tr><td>MODE0<\/td><td>0<\/td><td>0<\/td><\/tr><tr><td>MODE1<\/td><td>0<\/td><td>1<\/td><\/tr><tr><td>MODE2<\/td><td>1<\/td><td>0<\/td><\/tr><tr><td>MODE3<\/td><td>1<\/td><td>1<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">ESP32\u7684SPI\u4ecb\u9762<\/h2><p>ESP32\u7e3d\u5171\u67094\u500bSPI\u4ecb\u9762\uff0c\u5206\u5225\u662fSPI0~SPI3\u3002SPI0 \u8207 SPI1 \u5df2\u7d93\u88ab\u7528\u4f86\u9023\u63a5\u5230\u6676\u7247\u4e0a\u7684Flash Memory\uff0c\u6211\u5011\u4e00\u822c\u53ef\u4ee5\u81ea\u7531\u4f7f\u7528\u7684\u662fSPI2\u8207SPI3\u9019\u5169\u500bSPI\u63a7\u5236\u5668\uff0c\u5176\u4e2dSPI2\u53c8\u88ab\u7a31\u4f5c HSPI\uff08High-speed Serial Peripheral Interface\uff09\uff0cSPI3\u88ab\u7a31\u4f5cVSPI\uff08Very High-speed Serial Peripheral Interface\uff09\u3002\u9019\u5169\u500b SPI Bus \u5404\u81ea\u5177\u6709\u7368\u7acb\u7684\u8a0a\u865f\uff0c\u4ee3\u8868\u6211\u5011\u53ef\u4ee5\u96a8\u610f\u5c07\u4efb\u610f\u4e00\u9805\u4f5c\u70ba\u4e3b\u8a2d\u5099\u6216\u5468\u908a\u8a2d\u5099\uff0c\u800c\u4e0d\u5f71\u97ff\u5230\u53e6\u5916\u4e00\u9805\u3002\u5728\u628a\u5b83\u5011\u7576\u4f5c\u4e3b\u8a2d\u5099\u7684\u60c5\u6cc1\u4e0b\uff0c\u55ae\u4e00\u500bSPI Bus\u6700\u591a\u53ef\u4ee5\u9a45\u52d53\u500b\u5468\u908a\u8a2d\u5099\u3002<\/p><p>HSPI \u548c VSPI Bus\u7684\u9810\u8a2d\u63a5\u8173\u5982\u4e0b\uff1a<\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" class=\"wp-image-20824\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/ESP32-PINOUT.jpg\" alt=\"\" width=\"2221\" height=\"1579\" \/><\/figure><figure class=\"wp-block-pullquote\"><blockquote><p><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\" alt=\"\ud83d\udca1\" \/><span class=\"notion-enable-hover\" data-token-index=\"0\">Tips:<\/span>\u00a0\u5728\u67d0\u4e9bSPI\u5468\u908a\u8a2d\u5099\u7684\u8173\u4f4d\u6a19\u793a\u4e2d\uff0cCOPI \/ MOSI \u53ef\u80fd\u88ab\u6a19\u8a18\u70ba SDO \uff08Serial Data Out\uff09, CIPO \/ MISO \u53ef\u80fd\u88ab\u6a19\u8a18\u70ba SDI \uff08Serial Data In\uff09\u3002<\/p><\/blockquote><\/figure><h2 class=\"wp-block-heading\">\u4f7f\u7528ESP32\u4e0a\u9762\u7684SPI<\/h2><h3 class=\"wp-block-heading\">VSPI\uff08\u9810\u8a2d\uff09<\/h3><p>\u5728\u6c92\u6709\u7279\u5225\u8a2d\u5b9a\u7684\u60c5\u6cc1\u4e0b\uff0cESP32\u7684SPI\u9810\u8a2d\u4f7f\u7528VSPI\uff08SPI3\uff09\uff0c\u56e0\u6b64\u53ea\u8981\u7167\u8457\u9810\u8a2d\u63a5\u8173\u9023\u63a5\u5373\u53ef\u3002<\/p><p>\u6211\u5011\u53ef\u4ee5\u57f7\u884c\u4e0b\u9762\u7684\u7bc4\u4f8b\u67e5\u770b\u958b\u767c\u677f\u7684\u9810\u8a2d\u63a5\u8173\uff1a<\/p><pre class=\"wp-block-code\"><code>\/* \u986f\u793aESP32 SPI\u9810\u8a2d\u63a5\u8173 *\/\n\nvoid setup() {\n  Serial.begin(115200);\n}\n\nvoid loop() {\n  Serial.print(\"COPI \/ MOSI: \");\n  Serial.println(MOSI);\n  Serial.print(\"CIPO \/ MISO: \");\n  Serial.println(MISO);\n  Serial.print(\"SCK: \");\n  Serial.println(SCK);\n  Serial.print(\"CS \/ SS: \");\n  Serial.println(SS);\n  delay(1000);\n  Serial.println();\n}<\/code><\/pre><p><span class=\"notion-enable-hover\" data-token-index=\"0\">\u57f7\u884c\u7d50\u679c<\/span><\/p><figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20814\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/%E5%9C%96%E7%89%87-2.png\" alt=\"\" width=\"428\" height=\"192\" \/><\/figure><p>\u00a0<\/p><h3 class=\"wp-block-heading\">HSPI<\/h3><p>\u5982\u679c\u8981\u4f7f\u7528HSPI\uff0c\u5c31\u8981\u5148\u5f15\u5165&lt;SPI.h&gt;\u9019\u500b\u6a19\u982d\u6a94\uff0c\u7136\u5f8c\u7528SPIClass\u51fd\u5f0f\u5be6\u4f8b\u5316\u7269\u4ef6\uff0c\u4e26\u6307\u5b9a\u4f7f\u7528HSPI\u3002<\/p><p>\u4f8b\u5982\uff1a<\/p><pre class=\"wp-block-code\"><code># include &lt;SPI.h&gt;\n\nSPIClass MySPI2(HSPI);  \/\/ \u6307\u5b9aMySPI2\u4f7f\u7528HSPI\n\nvoid setup() {\n\n  MySPI2.begin();       \/\/ \u521d\u59cb\u5316MySPI2\uff0c\u4f7f\u7528HSPI\u9810\u8a2d\u63a5\u8173 (SCLK = 14, CIPO= 12, COPI =13, CS = 15)\n  \n\t\/\/ \u4ee5\u4e0b\u7701\u7565...\n}\n\nvoid loop() {\n  \n}<\/code><\/pre><h3 class=\"wp-block-heading\">\u81ea\u8a02\u7fa9SPI\u63a5\u8173<\/h3><p>SPIClass\u7684begin\u51fd\u5f0f\u4e5f\u53ef\u4ee5\u7528\u4f86\u6307\u5b9a\u5176\u4ed6GPIO\u63a5\u8173\uff1a<\/p><p>MySPI2.begin(HSPI_SCLK, HSPI_CIPO, HSPI_COPI, HSPI_CS); \/\/SCLK, CIPO, COPI, CS Pin<\/p><p>\u4f8b\u5982\u50cf\u662f\uff1a<\/p><pre class=\"wp-block-code\"><code># include &lt;SPI.h&gt;\n\n\/\/ \u63a5\u8173\u5b9a\u7fa9\n# define MySPI2_SCLK 14\n# define MySPI2_CIPO 12\n# define MySPI2_COPI 13\n# define MySPI2_CS 15\n\n# define SPI2CLK 1000000  \/\/ 1M Hz\n\nSPIClass MySPI2(HSPI);\n\nvoid setup() {\n  MySPI2.begin(MySPI2_SCLK, MySPI2_CIPO, MySPI2_COPI, MySPI2_CS);  \/\/ \u5728begin()\u81ea\u5b9a\u7fa9SPI2\u7684\u63a5\u8173\n}\n\nvoid loop() {\n  \n}<\/code><\/pre><figure class=\"wp-block-pullquote\"><blockquote><p><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\" alt=\"\ud83d\udca1\" \/>Tips: \u7576SPI\u88dd\u7f6e\u9700\u8981\u9ad8\u901f\u901a\u8a0a\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u9810\u8a2d\u63a5\u8173\u3002<\/p><\/blockquote><\/figure><p>\u00a0<\/p><h2 class=\"wp-block-heading\">SPI\u50b3\u8f38\u6d41\u7a0b<\/h2><p>\u9996\u5148\uff0c\u8a2d\u5b9a\u597dSPI\u7684\u6642\u8108\u983b\u7387\u4ee5\u53ca\u50b3\u8f38\u6a21\u5f0f\uff0c\u7136\u5f8c\u4f7f\u7528beginTransaction\u521d\u59cb\u5316SPI\u4ecb\u9762\u3002<\/p><p>SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MODE0)); \/\/ \u6642\u81081MHz, MSBFIRST, MODE0<\/p><p>\u63a5\u8457\u7528CS\u63a5\u8173\u9078\u64c7\u8981\u50b3\u9001\u7684\u5468\u908a\u8a2d\u5099\uff0c\u5c07\u96fb\u58d3\u6e96\u4f4d\u62c9\u4f4e\uff0c\u555f\u7528\u8a2d\u5099\u3002<\/p><p>digitalWrite(CS_pin, LOW);<\/p><p>\u7136\u5f8c\u547c\u53ebtransfer()\u65b9\u6cd5\u50b3\u8f38\u8cc7\u6599\u3002<\/p><p>SPI.transfer(data);<\/p><p>\u50b3\u8f38\u5b8c\u6210\u5f8c\uff0c\u518d\u5c07CS\u63a5\u8173\u7684\u96fb\u58d3\u6e96\u4f4d\u62c9\u56de\u9ad8\u96fb\u4f4d\u3002<\/p><p>digitalWrite(CS_pin, HIGH);<\/p><p>\u6700\u5f8c\uff0c\u547c\u53ebendTransaction()\uff0c\u91cb\u653e\u76ee\u524d\u4f7f\u7528\u7684SPI Bus\u3002<\/p><p>SPI.endTransaction();<\/p><p>\u00a0<\/p><h2 class=\"wp-block-heading\">SPI\u8a0a\u865f\u7684\u5be6\u969b\u8f38\u51fa<\/h2><p>\u4e0b\u5716\u662f\u6307\u5b9aESP32\u7576\u4f5cSPI Controller\u8f38\u51fa<code>\u00a0<strong><em>0b11001100<\/em><\/strong><\/code>\u00a0\u7684\u8a0a\u865f\uff0c\u7528\u908f\u8f2f\u5206\u6790\u5100\u6355\u6349\u5230\u7684\u6ce2\u5f62\uff1a<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20817\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/%E5%9C%96%E7%89%87-3.png\" alt=\"\" width=\"2000\" height=\"441\" \/><\/figure><p>\u9019\u6bb5\u901a\u8a0a\u7684\u50b3\u8f38\u6a21\u5f0f\u662fMODE 0\uff0c\u6240\u4ee5\u5f9e\u5716\u7247\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u6bcf\u500b\u6642\u8108\u7684\u4e0a\u5347\u7de3\u8b80\u53d6\uff0cMOSI\u63a5\u8173\u5c31\u6703\u63a5\u6536\u5230\u00a0<strong><em>0b11001100<\/em><\/strong>\u00a0\u7684\u8cc7\u6599\u3002\u4f46\u662f\u5728\u8a66\u4e86\u5e7e\u6b21\u5f8c\u90fd\u6c92\u80fd\u6293\u5230CS\u63a5\u8173\u7684\u8b8a\u5316\u72c0\u614b\uff0c\u4e14CS\u51fa\u73fe\u7684\u5e7e\u500b\u5c16\u6ce2\uff0c\u4e5f\u8b93\u7b46\u8005\u76f8\u7576\u4e0d\u89e3\u3002\u5982\u679c\u6709\u7db2\u53cb\u77e5\u9053\u539f\u56e0\uff0c\u9084\u8acb\u4e0d\u541d\u544a\u77e5\u3002<\/p><p>\u00a0<\/p><p>\u6e2c\u8a66\u7a0b\u5f0f\u78bc<\/p><div id=\"gist126688976\" class=\"gist\"><div class=\"gist-file\" translate=\"no\"><div class=\"gist-data\"><div class=\"js-gist-file-update-container js-task-list-container\"><div id=\"file-esp32_spi_example-ino\" class=\"file my-2\"><div class=\"Box-body p-0 blob-wrapper data type-c \"><div class=\"js-check-bidi js-blob-code-container blob-code-content\"><table class=\"highlight tab-size js-file-line-container js-code-nav-container js-tagsearch-file\" data-hpc=\"\" data-tab-size=\"8\" data-paste-markdown-skip=\"\" data-tagsearch-lang=\"C++\" data-tagsearch-path=\"esp32_spi_example.ino\"><tbody><tr><td id=\"file-esp32_spi_example-ino-L1\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"1\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC1\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/* ESP32 HSPI\u8f38\u51fa\u6e2c\u8a66 *\/<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L2\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"2\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC2\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L3\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"3\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC3\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">include<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">&lt;<\/span>SPI.h<span class=\"pl-pds\">&gt;<\/span><\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L4\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"4\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC4\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L5\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"5\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC5\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u63a5\u8173\u5b9a\u7fa9<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L6\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"6\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC6\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">MySPI2_SCLK<\/span> <span class=\"pl-c1\">14<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L7\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"7\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC7\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">MySPI2_CIPO<\/span> <span class=\"pl-c1\">12<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L8\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"8\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC8\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">MySPI2_COPI<\/span> <span class=\"pl-c1\">13<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L9\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"9\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC9\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">MySPI2_CS<\/span> <span class=\"pl-c1\">15<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L10\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"10\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC10\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L11\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"11\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC11\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">SPI2CLK<\/span> <span class=\"pl-c1\">1000000<\/span> <span class=\"pl-c\">\/\/ 1M Hz<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L12\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"12\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC12\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L13\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"13\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC13\" class=\"blob-code blob-code-inner js-file-line\">SPIClass <span class=\"pl-en\">MySPI2<\/span>(HSPI);<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L14\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"14\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC14\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L15\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"15\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC15\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">setup<\/span>() {<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L16\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"16\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC16\" class=\"blob-code blob-code-inner js-file-line\">MySPI2.<span class=\"pl-c1\">begin<\/span>(MySPI2_SCLK, MySPI2_CIPO, MySPI2_COPI, MySPI2_CS); <span class=\"pl-c\">\/\/ \u8a2d\u5b9aSPI2\u7684\u63a5\u8173<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L17\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"17\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC17\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L18\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"18\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC18\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">pinMode<\/span>(MySPI2_CS, OUTPUT);<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L19\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"19\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC19\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L20\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"20\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC20\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L21\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"21\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC21\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">loop<\/span>() {<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L22\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"22\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC22\" class=\"blob-code blob-code-inner js-file-line\">MySPI2.<span class=\"pl-c1\">beginTransaction<\/span>(<span class=\"pl-c1\">SPISettings<\/span>(SPI2CLK, MSBFIRST, SPI_MODE0)); <span class=\"pl-c\">\/\/ \u521d\u59cb\u5316SPI bus\u3002\u8207Arduino SPI\u7528\u6cd5\u76f8\u540c<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L23\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"23\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC23\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(MySPI2_CS, LOW); <span class=\"pl-c\">\/\/ \u5c07\u6676\u7247\u9078\u64c7\u8173(CS)\u62c9\u4f4e\uff0c\u6e96\u5099\u50b3\u8f38\u8cc7\u6599<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L24\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"24\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC24\" class=\"blob-code blob-code-inner js-file-line\">MySPI2.<span class=\"pl-c1\">transfer<\/span>(<span class=\"pl-c1\">byte<\/span>(<span class=\"pl-c1\">0b11001100<\/span>)); <span class=\"pl-c\">\/\/ \u50b3\u8f38 b&#8217;11001100&#8242;<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L25\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"25\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC25\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(MySPI2_CS, HIGH); <span class=\"pl-c\">\/\/\u5c07CS\u8173\u62c9\u9ad8\uff0c\u8868\u793a\u50b3\u8f38\u7d50\u675f<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L26\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"26\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC26\" class=\"blob-code blob-code-inner js-file-line\">MySPI2.<span class=\"pl-c1\">endTransaction<\/span>(); <span class=\"pl-c\">\/\/ \u91cb\u653eSPI Bus<\/span><\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L27\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"27\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC27\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">delay<\/span>(<span class=\"pl-c1\">100<\/span>);<\/td><\/tr><tr><td id=\"file-esp32_spi_example-ino-L28\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"28\">\u00a0<\/td><td id=\"file-esp32_spi_example-ino-LC28\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/div><\/div><\/div><div class=\"gist-meta\"><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/ff41917f54e01bd94ea78833fa332517\/raw\/e2464cf756034af45634e83f9a88ff686c23e22b\/esp32_spi_example.ino\">view raw<\/a><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/ff41917f54e01bd94ea78833fa332517#file-esp32_spi_example-ino\">esp32_spi_example.ino\u00a0<\/a>hosted with\u00a0<img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2764.svg\" alt=\"\u2764\" \/>\u00a0by\u00a0<a class=\"Link--inTextBlock\" href=\"https:\/\/github.com\/\">GitHub<\/a><\/div><\/div><\/div><p>\uff08\u8a3b: \u9019\u90e8\u5206\u53c3\u8003\u7684\u662farduino-esp32 core SPI example\u7684\u6e2c\u8a66\u7a0b\u5f0f\uff08<a href=\"https:\/\/github.com\/espressif\/arduino-esp32\/blob\/master\/libraries\/SPI\/examples\/SPI_Multiple_Buses\/SPI_Multiple_Buses.ino\">Link<\/a>\uff09\uff09<\/p><p>\u5f9e\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0c\u5728SPI\u8cc7\u6599\u50b3\u8f38\u968e\u6bb5\uff0cESP32\u4f7f\u7528\u7684\u7a0b\u5f0f\u8a9e\u6cd5\u8207\u539f\u751f\u7684Arduino\u76f8\u540c\u3002\u5728\u50b3\u8f38\u8cc7\u6599\u524d\uff0c\u6703\u5148\u5c07CS\u63a5\u8173\u63a5\u5230\u4f4e\u96fb\u4f4d\u518d\u9001\u51fa\u8cc7\u6599\u3002\u50b3\u8f38\u5b8c\u6210\u5f8c\u518d\u5c07CS\u63a5\u8173\u63a5\u56de\u9ad8\u96fb\u4f4d\uff0c\u8868\u793a\u50b3\u8f38\u7d50\u675f\u3002<\/p><p>\u00a0<\/p><h2 class=\"wp-block-heading\">\u9023\u63a5\u591a\u500bSPI\u8a2d\u5099<\/h2><p>\u5047\u5982ESP32\u540c\u6642\u8207\u5468\u908a\u8a2d\u50991\u4ee5\u53ca\u8a2d\u50992\u9023\u63a5\uff0c\u8981\u5411\u5468\u908a\u8a2d\u50992\u50b3\u9001\u8cc7\u6599\u6642\uff0c\u4e5f\u662f\u7528\u540c\u6a23\u7684\u65b9\u5f0f\u8a2d\u5b9a\u3002\u53ea\u662f\u8981\u5148\u5c07\u5468\u908a\u8a2d\u50991\u7684CS\u63a5\u8173\u8a2d\u70ba\u9ad8\u96fb\u4f4d\uff0c\u518d\u53bb\u8a2d\u5b9a\u8a2d\u50992\u7684CS\u63a5\u8173\u3002\u63a5\u7dda\u90e8\u5206\u9700\u8981\u6ce8\u610fController\u7528\u4e86\u5169\u6839\u4e0d\u540c\u7684CS\u63a5\u8173\u3002<\/p><pre class=\"wp-block-code\"><code>void loop() {\n\n  MySPI2.beginTransaction(SPISettings(SPI2CLK, MSBFIRST, SPI_MODE0)); \/\/ \u521d\u59cb\u5316SPI bus\u3002\u8207Arduino SPI\u7528\u6cd5\u76f8\u540c\n  \n  digitalWrite(MySPI2_CS1, HIGH); \/\/ \u5c07\u8a2d\u50991\u7684\u6676\u7247\u9078\u64c7\u8173(CS)\u62c9\u9ad8\uff0c\u7981\u7528\u8a2d\u50991\n  digitalWrite(MySPI2_CS2, LOW); \/\/ \u5c07\u8a2d\u50992\u7684\u6676\u7247\u9078\u64c7\u8173(CS)\u62c9\u4f4e\uff0c\u6e96\u5099\u50b3\u8f38\u8cc7\u6599\n\n  MySPI2.transfer(byte(0b11001100)); \/\/ \u50b3\u8f38\u4e8c\u9032\u4f4d\u8cc7\u6599\n  \n  \/\/ \u4ee5\u4e0b\u7701\u7565....\n}<\/code><\/pre><p>\u8a3b\uff1a\u82e5\u5c07ESP32\u7576\u4f5c\u4e3b\u8a2d\u5099\u8b80\u53d6\u5177\u6709SPI\u4ecb\u9762\u7684\u611f\u6e2c\u5668\u8cc7\u6599\uff0c\u901a\u5e38\u9084\u6703\u53e6\u5916\u518d\u642d\u914d\u611f\u6e2c\u5668\u7684\u51fd\u5f0f\u5eab\u4f7f\u7528\uff0c\u4f46\u662f\u6b64\u90e8\u5206\u7684\u7a0b\u5f0f\u78bc\u8207\u539f\u751fSPI\u7684\u95dc\u806f\u6027\u8f03\u4f4e\uff0c\u672c\u7bc7\u5148\u4e0d\u8a0e\u8ad6\u3002<\/p><p>\u00a0<\/p><h2 class=\"wp-block-heading\">\u9032\u968e\u7bc4\u4f8b: \u4f7f\u7528SPI\u5728ESP32\u4e4b\u9593\u50b3\u8a0a<\/h2><p>\u63a5\u4e0b\u4f86\u7684\u7bc4\u4f8b\u6703\u8aaa\u660e\u5982\u4f55\u5728\u5169\u7247\u4e0d\u540c\u7684ESP32\u958b\u767c\u677f\u4e0a\u9762\u4f7f\u7528SPI\u901a\u8a0a\u3002\u6211\u5011\u628a\u53f3\u908a\u7684\u958b\u767c\u677f\u7576\u4f5c\u4e3b\u8a2d\u5099\uff0c\u5de6\u908a\u7684\u958b\u767c\u677f\u7576\u4f5c\u5468\u908a\u8a2d\u5099\uff0c\u5169\u908a\u4f7f\u7528HSPI\u7684\u9810\u8a2d\u63a5\u8173\u901a\u8a0a\uff0c\u7531\u4e3b\u8a2d\u5099\u767c\u9001\u4e8c\u9032\u4f4d\u8a0a\u606f\u5230\u5468\u908a\u8a2d\u5099\u3002\u7576\u9031\u908a\u8a2d\u5099\u63a5\u6536\u52300x01\u8a0a\u865f\u6642\uff0c\u5c31\u6703\u9ede\u4eae\u958b\u767c\u677f\u4e0a\u7684LED\u3002<\/p><figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20819\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/IMG_2339.jpeg\" alt=\"\" width=\"799\" height=\"600\" \/><\/figure><p>\u00a0<\/p><h3>\u6750\u6599\u6e05\u55ae<\/h3><ul><li>ESP32\u958b\u767c\u677f x2micro USB \u50b3\u8f38\u7dda x1\u9eb5\u5305\u677f x1\u675c\u90a6\u7dda\uff08\u516c-\u516c\uff09 x6<\/li><\/ul><h3>\u9023\u63a5\u793a\u610f\u5716<\/h3><p>\u00a0<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20820\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/%E5%9C%96%E7%89%87-4.png\" alt=\"\" width=\"2000\" height=\"862\" \/><\/figure><p>\u00a0<\/p><p>\u8173\u4f4d\u5c0d\u7167\u8868<\/p><figure class=\"wp-block-table\"><table><thead><tr><th><strong>SPI BUS<\/strong><\/th><th><strong>\u4e3b\u8a2d\u5099<\/strong><\/th><th><strong>\u5468\u908a\u8a2d\u5099<\/strong><\/th><\/tr><\/thead><tbody><tr><td>COPI<\/td><td>GPIO 13<\/td><td>GPIO 13<\/td><\/tr><tr><td>CIPO<\/td><td>GPIO 12<\/td><td>GPIO 12<\/td><\/tr><tr><td>SCK<\/td><td>GPIO 14<\/td><td>GPIO 14<\/td><\/tr><tr><td>CS<\/td><td>GPIO 15<\/td><td>GPIO 15<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\">\u4e3b\u63a7\u7aef<\/h3><p>\u4e0b\u9762\u7684\u7a0b\u5f0f\u529f\u80fd\u662f\u8b93\u4e3b\u63a7\u7aef\u4f7f\u7528HSPI\u63a7\u5236\u5668\u56fa\u5b9a\u9593\u9694\u5927\u7d041\u79d2\u9418\u7684\u6642\u9593\uff0c\u50b3\u9001\u8a0a\u865f\u7d66\u5468\u908a\u8a2d\u5099\u3002<\/p><p><strong>\u7a0b\u5f0f\u78bc<\/strong><\/p><div id=\"gist126689399\" class=\"gist\"><div class=\"gist-file\" translate=\"no\"><div class=\"gist-data\"><div class=\"js-gist-file-update-container js-task-list-container\"><div id=\"file-circuspi_esp32_spi_master-ino\" class=\"file my-2\"><div class=\"Box-body p-0 blob-wrapper data type-c \"><div class=\"js-check-bidi js-blob-code-container blob-code-content\"><table class=\"highlight tab-size js-file-line-container js-code-nav-container js-tagsearch-file\" data-hpc=\"\" data-tab-size=\"8\" data-paste-markdown-skip=\"\" data-tagsearch-lang=\"C++\" data-tagsearch-path=\"circuspi_esp32_spi_master.ino\"><tbody><tr><td id=\"file-circuspi_esp32_spi_master-ino-L1\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"1\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC1\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/* ESP32 SPI\u901a\u8a0a (Controller) *\/<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L2\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"2\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC2\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L3\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"3\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC3\" class=\"blob-code blob-code-inner js-file-line\">#<span class=\"pl-k\">include<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">&lt;<\/span>SPI.h<span class=\"pl-pds\">&gt;<\/span><\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L4\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"4\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC4\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L5\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"5\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC5\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u63a5\u8173\u5b9a\u7fa9<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L6\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"6\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC6\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">HSPI_SCLK<\/span> <span class=\"pl-c1\">14<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L7\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"7\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC7\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">HSPI_CIPO<\/span> <span class=\"pl-c1\">12<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L8\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"8\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC8\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">HSPI_COPI<\/span> <span class=\"pl-c1\">13<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L9\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"9\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC9\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">HSPI_CS<\/span> <span class=\"pl-c1\">15<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L10\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"10\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC10\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L11\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"11\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC11\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">static<\/span> <span class=\"pl-k\">const<\/span> <span class=\"pl-k\">int<\/span> SPI_CLK = <span class=\"pl-c1\">1000000<\/span>; <span class=\"pl-c\">\/\/ 1 MHz<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L12\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"12\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC12\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L13\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"13\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC13\" class=\"blob-code blob-code-inner js-file-line\">SPIClass * hspi = <span class=\"pl-c1\">NULL<\/span>;<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L14\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"14\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC14\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L15\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"15\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC15\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">setup<\/span>() {<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L16\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"16\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC16\" class=\"blob-code blob-code-inner js-file-line\">hspi = <span class=\"pl-k\">new<\/span> <span class=\"pl-c1\">SPIClass<\/span>(HSPI);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L17\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"17\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC17\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">begin<\/span>(HSPI_SCLK, HSPI_CIPO, HSPI_COPI, HSPI_CS);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L18\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"18\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC18\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">pinMode<\/span>(HSPI_CS, OUTPUT);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L19\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"19\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC19\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L20\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"20\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC20\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L21\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"21\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC21\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">loop<\/span>() {<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L22\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"22\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC22\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">hspi_send_cmd<\/span>();<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L23\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"23\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC23\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">delay<\/span>(<span class=\"pl-c1\">100<\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L24\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"24\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC24\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L25\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"25\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC25\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L26\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"26\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC26\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">hspi_send_cmd<\/span>(){<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L27\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"27\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC27\" class=\"blob-code blob-code-inner js-file-line\">byte data_on = <span class=\"pl-c1\">0b00000001<\/span>; <span class=\"pl-c\">\/\/ 0x01<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L28\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"28\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC28\" class=\"blob-code blob-code-inner js-file-line\">byte data_off = <span class=\"pl-c1\">0b00000000<\/span>; <span class=\"pl-c\">\/\/ 0x00<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L29\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"29\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC29\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L30\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"30\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC30\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u767c\u90010x01<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L31\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"31\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC31\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">beginTransaction<\/span>(<span class=\"pl-c1\">SPISettings<\/span>(SPI_CLK, MSBFIRST, SPI_MODE0)); <span class=\"pl-c\">\/\/ \u6e96\u5099\u50b3\u8f38<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L32\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"32\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC32\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(HSPI_CS, LOW);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L33\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"33\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC33\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">transfer<\/span>(data_on);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L34\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"34\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC34\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(HSPI_CS, HIGH);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L35\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"35\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC35\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">endTransaction<\/span>(); <span class=\"pl-c\">\/\/ \u50b3\u8f38\u7d50\u675f<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L36\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"36\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC36\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">delay<\/span>(<span class=\"pl-c1\">1000<\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L37\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"37\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC37\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L38\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"38\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC38\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u767c\u90010x00<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L39\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"39\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC39\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">beginTransaction<\/span>(<span class=\"pl-c1\">SPISettings<\/span>(SPI_CLK, MSBFIRST, SPI_MODE0));<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L40\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"40\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC40\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(HSPI_CS, LOW);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L41\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"41\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC41\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">transfer<\/span>(data_off);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L42\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"42\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC42\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(HSPI_CS, HIGH);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L43\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"43\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC43\" class=\"blob-code blob-code-inner js-file-line\">hspi -&gt; <span class=\"pl-c1\">endTransaction<\/span>();<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L44\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"44\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC44\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">delay<\/span>(<span class=\"pl-c1\">1000<\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_master-ino-L45\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"45\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_master-ino-LC45\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/div><\/div><\/div><div class=\"gist-meta\"><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/2ce96aa6a6a1a4cb28670fb27160eaae\/raw\/567051e2cc53133136d23dc2ad77629fee80064c\/circuspi_esp32_spi_master.ino\">view raw<\/a><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/2ce96aa6a6a1a4cb28670fb27160eaae#file-circuspi_esp32_spi_master-ino\">circuspi_esp32_spi_master.ino\u00a0<\/a>hosted with\u00a0<img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2764.svg\" alt=\"\u2764\" \/>\u00a0by\u00a0<a class=\"Link--inTextBlock\" href=\"https:\/\/github.com\/\">GitHub<\/a><\/div><\/div><\/div><h3 class=\"wp-block-heading\">\u5468\u908a\u8a2d\u5099\u7aef<\/h3><p>\u7531\u65bc&lt;SPI.h&gt;\u51fd\u5f0f\u5eab\u6c92\u6709\u652f\u63f4\u5c07ESP32\u7576\u4f5c\u5468\u908a\u8a2d\u5099\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u6211\u5011\u9700\u8981\u5148\u5230\u51fd\u5f0f\u5eab\u7ba1\u7406\u54e1\u4e2d\u4e0b\u8f09ESP32SPISlave\u9019\u500b\u51fd\u5f0f\u5eab\u3002<\/p><figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20821\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/%E5%9C%96%E7%89%87-5.png\" alt=\"\" width=\"387\" height=\"401\" \/><\/figure><p>\u5c07\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\u8907\u88fd\u5230IDE\u5f8c\u4e0a\u50b3\uff0c\u6253\u958b\u5e8f\u5217\u57e0\u76e3\u63a7\u8996\u7a97\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u76ee\u524d\u63a5\u6536\u5230\u7684\u8cc7\u6599\u3002<\/p><p><strong>\u7a0b\u5f0f\u78bc<\/strong><\/p><p>\uff08\u8a3b\uff1a\u7531\u65bc\u6b64\u51fd\u5f0f\u5eab\u4f7f\u7528Slave\u4ee3\u7a31\u5468\u908a\u8a2d\u5099\uff0c\u56e0\u6b64\u7a0b\u5f0f\u78bc\u4e2d\u5c31\u6cbf\u7528Slave\u7684\u7a31\u547c\uff09<\/p><div id=\"gist126689384\" class=\"gist\"><div class=\"gist-file\" translate=\"no\"><div class=\"gist-data\"><div class=\"js-gist-file-update-container js-task-list-container\"><div id=\"file-circuspi_esp32_spi_slave-ino\" class=\"file my-2\"><div class=\"Box-body p-0 blob-wrapper data type-c \"><div class=\"js-check-bidi js-blob-code-container blob-code-content\"><table class=\"highlight tab-size js-file-line-container js-code-nav-container js-tagsearch-file\" data-hpc=\"\" data-tab-size=\"8\" data-paste-markdown-skip=\"\" data-tagsearch-lang=\"C++\" data-tagsearch-path=\"circuspi_esp32_spi_slave.ino\"><tbody><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L1\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"1\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC1\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/* ESP32 SPI\u901a\u8a0a (Slave) *\/<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L2\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"2\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC2\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L3\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"3\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC3\" class=\"blob-code blob-code-inner js-file-line\">#<span class=\"pl-k\">include<\/span> <span class=\"pl-s\"><span class=\"pl-pds\">&lt;<\/span>ESP32SPISlave.h<span class=\"pl-pds\">&gt;<\/span><\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L4\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"4\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC4\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L5\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"5\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC5\" class=\"blob-code blob-code-inner js-file-line\"># <span class=\"pl-k\">define<\/span> <span class=\"pl-en\">LED<\/span> <span class=\"pl-c1\">2<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L6\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"6\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC6\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L7\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"7\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC7\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">static<\/span> <span class=\"pl-k\">constexpr<\/span> <span class=\"pl-c1\">uint32_t<\/span> BUFFER_SIZE {<span class=\"pl-c1\">32<\/span>};<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L8\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"8\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC8\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">uint8_t<\/span> spi_slave_tx_buf[BUFFER_SIZE];<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L9\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"9\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC9\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">uint8_t<\/span> spi_slave_rx_buf[BUFFER_SIZE];<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L10\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"10\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC10\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L11\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"11\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC11\" class=\"blob-code blob-code-inner js-file-line\">ESP32SPISlave slave;<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L12\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"12\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC12\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L13\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"13\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC13\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">setup<\/span>() {<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L14\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"14\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC14\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">begin<\/span>(<span class=\"pl-c1\">115200<\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L15\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"15\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC15\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">delay<\/span>(<span class=\"pl-c1\">2000<\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L16\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"16\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC16\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">pinMode<\/span>(LED, OUTPUT);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L17\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"17\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC17\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L18\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"18\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC18\" class=\"blob-code blob-code-inner js-file-line\">slave.<span class=\"pl-c1\">setDataMode<\/span>(SPI_MODE0);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L19\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"19\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC19\" class=\"blob-code blob-code-inner js-file-line\">slave.<span class=\"pl-c1\">begin<\/span>(); <span class=\"pl-c\">\/\/ \u4f7f\u7528HSPI\u9810\u8a2d\u63a5\u8173<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L20\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"20\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC20\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L21\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"21\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC21\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u6e05\u7a7abuffer<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L22\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"22\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC22\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">memset<\/span>(spi_slave_tx_buf, <span class=\"pl-c1\">0<\/span>, BUFFER_SIZE);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L23\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"23\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC23\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">memset<\/span>(spi_slave_rx_buf, <span class=\"pl-c1\">0<\/span>, BUFFER_SIZE);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L24\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"24\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC24\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L25\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"25\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC25\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L26\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"26\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC26\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">void<\/span> <span class=\"pl-en\">loop<\/span>() {<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L27\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"27\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC27\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">char<\/span> data; <span class=\"pl-c\">\/\/ \u7d00\u9304\u6536\u5230\u7684\u8cc7\u6599<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L28\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"28\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC28\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L29\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"29\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC29\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u7b49\u5f85\u76f4\u5230\u50b3\u8f38\u5b8c\u6210<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L30\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"30\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC30\" class=\"blob-code blob-code-inner js-file-line\">slave.<span class=\"pl-c1\">wait<\/span>(spi_slave_rx_buf, spi_slave_tx_buf, BUFFER_SIZE);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L31\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"31\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC31\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L32\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"32\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC32\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">while<\/span> (slave.<span class=\"pl-c1\">available<\/span>()) {<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L33\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"33\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC33\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c\">\/\/ \u986f\u793a\u6536\u5230\u7684\u8cc7\u6599<\/span><\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L34\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"34\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC34\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">print<\/span>(<span class=\"pl-s\"><span class=\"pl-pds\">&#8220;<\/span>Command Received: <span class=\"pl-pds\">&#8220;<\/span><\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L35\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"35\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC35\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">println<\/span>(spi_slave_rx_buf[<span class=\"pl-c1\">0<\/span>]);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L36\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"36\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC36\" class=\"blob-code blob-code-inner js-file-line\">data = spi_slave_rx_buf[<span class=\"pl-c1\">0<\/span>];<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L37\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"37\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC37\" class=\"blob-code blob-code-inner js-file-line\">slave.<span class=\"pl-c1\">pop<\/span>();<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L38\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"38\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC38\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L39\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"39\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC39\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">if<\/span>(data == <span class=\"pl-c1\">1<\/span> )<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L40\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"40\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC40\" class=\"blob-code blob-code-inner js-file-line\">{<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L41\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"41\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC41\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">println<\/span>(<span class=\"pl-s\"><span class=\"pl-pds\">&#8220;<\/span>\u9ede\u4eaeLED<span class=\"pl-pds\">&#8220;<\/span><\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L42\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"42\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC42\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(LED, HIGH);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L43\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"43\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC43\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L44\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"44\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC44\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-k\">else<\/span> <span class=\"pl-k\">if<\/span>(data == <span class=\"pl-c1\">0<\/span> )<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L45\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"45\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC45\" class=\"blob-code blob-code-inner js-file-line\">{<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L46\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"46\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC46\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">println<\/span>(<span class=\"pl-s\"><span class=\"pl-pds\">&#8220;<\/span>\u7184\u6ec5LED<span class=\"pl-pds\">&#8220;<\/span><\/span>);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L47\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"47\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC47\" class=\"blob-code blob-code-inner js-file-line\"><span class=\"pl-c1\">digitalWrite<\/span>(LED, LOW);<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L48\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"48\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC48\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L49\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"49\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC49\" class=\"blob-code blob-code-inner js-file-line\">Serial.<span class=\"pl-c1\">println<\/span>();<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L50\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"50\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC50\" class=\"blob-code blob-code-inner js-file-line\">\u00a0<\/td><\/tr><tr><td id=\"file-circuspi_esp32_spi_slave-ino-L51\" class=\"blob-num js-line-number js-code-nav-line-number js-blob-rnum\" data-line-number=\"51\">\u00a0<\/td><td id=\"file-circuspi_esp32_spi_slave-ino-LC51\" class=\"blob-code blob-code-inner js-file-line\">}<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/div><\/div><\/div><div class=\"gist-meta\"><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/a338fd7f8c5df08faf85ab3bae8c011e\/raw\/8610d4c35c43353b6b086f7d25fa2acda508ade8\/circuspi_esp32_spi_slave.ino\">view raw<\/a><a class=\"Link--inTextBlock\" href=\"https:\/\/gist.github.com\/FelixLinSY\/a338fd7f8c5df08faf85ab3bae8c011e#file-circuspi_esp32_spi_slave-ino\">circuspi_esp32_spi_slave.ino\u00a0<\/a>hosted with\u00a0<img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2764.svg\" alt=\"\u2764\" \/>\u00a0by\u00a0<a class=\"Link--inTextBlock\" href=\"https:\/\/github.com\/\">GitHub<\/a><\/div><\/div><\/div><p>\u57f7\u884c\u7d50\u679c<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20822\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/12\/esp32_spi.gif\" alt=\"\" width=\"600\" height=\"280\" \/><\/figure><p>\u00a0<\/p><h2>\u5c0f\u7d50<\/h2><p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528ESP32\u4e0a\u9762\u7684VSPI\u548cHSPI\u9019\u5169\u500b\u7368\u7acb\u7684SPI\u63a7\u5236\u5668\u9032\u884cSPI\u901a\u8a0a\uff0c\u55ae\u4e00\u500bSPI\u63a7\u5236\u5668\u53ef\u4ee5\u9a45\u52d53\u500b\u5468\u908a\u88dd\u7f6e\uff0c\u6240\u4ee5\u6700\u591a\u53ef\u4ee5\u63a7\u5236\u52306\u500b\u5468\u908a\u88dd\u7f6e\u3002\u5728\u9023\u63a5\u5230\u591a\u500b\u5468\u908a\u8a2d\u5099\u6642\uff0c\u9700\u8981\u6ce8\u610f\u6bcf\u500b\u8a2d\u5099\u90fd\u8981\u7531\u4e0d\u540c\u7684CS\u63a5\u8173\u63a7\u5236\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u9664\u4e86\u4ecb\u7d39\u9810\u8a2d\u7684SPI\u63a5\u8173\uff0c\u4e5f\u8aaa\u660e\u4e86\u5982\u4f55\u7528\u8edf\u9ad4\u91cd\u65b0\u5b9a\u7fa9\u63a5\u8173\uff0c\u4ee5\u53ca\u4f7f\u7528SPI\u50b3\u8a0a\u6642\u5be6\u969b\u7684\u8f38\u51fa\u8a0a\u865f\u3002\u6700\u5f8c\u900f\u904e\u7bc4\u4f8b\u8aaa\u660e\u5982\u4f55\u5728\u5169\u7247ESP32\u9593\u7528SPI\u901a\u8a0a\u3002\u4e0b\u4e00\u7bc7\uff0c\u6211\u5011\u5c07\u6703\u8aaa\u660e\u5982\u4f55\u5728ESP32\u4e0a\u9762\u9a45\u52d5SPI\u4ecb\u9762\u7684\u96fb\u5b50\u7d19\u3002<\/p><\/div><\/section><\/div><\/article><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587:\u00a0 https:\/\/www.circuspi.com\/inde&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":489,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>ESP32 \u5e8f\u5217\u5468\u908a\u4ecb\u9762 SPI - Richard Studio \u7406\u67e5\u5de5\u4f5c\u5ba4<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/3dok.biz\/wordpress\/?p=450\" \/>\r\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"ESP32 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