{"id":574,"date":"2022-11-18T15:41:11","date_gmt":"2022-11-18T07:41:11","guid":{"rendered":"http:\/\/wordpress.loc\/?p=574"},"modified":"2023-02-22T20:47:51","modified_gmt":"2023-02-22T12:47:51","slug":"esp32_ch1-9","status":"publish","type":"post","link":"https:\/\/www.nmking.io\/index.php\/2022\/11\/18\/574\/","title":{"rendered":"\u7b2c04\u7bc7 ESP32\u6578\u4f4d\u8b80\u53d6(\u611f\u6e2c)digitalRead"},"content":{"rendered":"\n<figure class=\"wp-block-pullquote\"><blockquote><p>\u672c\u7bc7\u6211\u5011\u8981\u5229\u7528ESP32\u7684\u6578\u4f4d\u8b80\u53d6(digitalRead)\u4f86\u88fd\u4f5c\u4f86\u5ba2\u901a\u77e5\u5668<br>\u300c\u7576\u6709\u4eba\u7d93\u904e\u6642\u6703\u4eae\u7d05\u71c8\uff0c\u6c92\u4eba\u7d93\u904e\u6642\u4eae\u7da0\u71c8\u300d<\/p><\/blockquote><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-ht-block-toc is-style-rounded htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">Table of Contents<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#htoc-\">\u524d\u8a00<\/a><\/li><li class=\"\"><a href=\"#htoc-esp32\">ESP32\u6578\u4f4d\u8b80\u53d6\u662f\u4ec0\u9ebc\uff1f<\/a><\/li><li class=\"\"><a href=\"#htoc-1\">\u611f\u6e2c\u6a21\u7d44\u8981\u7528\u54ea\u7a2e\u65b9\u5f0f\uff1f\u8981\u9078\u6578\u4f4d\u9084\u662f\u985e\u6bd4\uff1f<\/a><\/li><li class=\"\"><a href=\"#htoc-11\">\u4e00\u3001\u6750\u6599\u6e96\u5099<\/a><\/li><li class=\"\"><a href=\"#htoc-esp321\">\u4e8c\u3001ESP32\u7dda\u8def\u4f48\u7f6e<\/a><\/li><li class=\"\"><a href=\"#htoc-111\">\u4e09\u3001\u64b0\u5beb\u7a0b\u5f0f<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-1-sr-501\">1.\u7c21\u6613SR-501\u6e2c\u8a66<\/a><\/li><li class=\"\"><a href=\"#htoc-2-led\">2.\u4ee5LED\u986f\u793a<\/a><\/li><\/ul><\/li><\/ul><\/div><\/div>\n\n\n\n<p>\u6211\u7684ESP32\u5be6\u505a\u66f8\u7c4d\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/www.nmking.io\/index.php\/2022\/11\/10\/esp32_ch1-2\/\" target=\"_blank\">\u6211\u51fa\u66f8\u4e86 ESP32 \u7269\u806f\u7db2\u5c08\u984c<\/a><br>\u535a\u5ba2\u4f86\u7db2\u5740\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/www.books.com.tw\/products\/0010901195\" target=\"_blank\">https:\/\/www.books.com.tw\/products\/0010901195<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-\">\u524d\u8a00<\/h2>\n\n\n\n<p>\u672c\u7bc7\u6211\u5011\u8981\u5229\u7528ESP32\u7684\u6578\u4f4d\u8b80\u53d6(digitalRead)\u4f86\u88fd\u4f5c\u4f86\u5ba2\u901a\u77e5\u5668\uff0c\u300c\u7576\u6709\u4eba\u7d93\u904e\u6642\u6703\u4eae\u7d05\u71c8\uff0c\u6c92\u4eba\u7d93\u904e\u6642\u4eae\u7da0\u71c8\u300d\uff0c\u672c\u7bc7\u6703\u7d50\u5408\u4e0a\u4e00\u7bc7\u6578\u4f4d\u5beb\u5165digitalWrite\u53ca\u7d05\u8272\u3001\u7da0\u8272LED\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-esp32\">ESP32\u6578\u4f4d\u8b80\u53d6\u662f\u4ec0\u9ebc\uff1f<\/h2>\n\n\n\n<p>\u6578\u4f4d\u8b80\u53d6\u4e5f\u53ef\u7a31\u70ba\u6578\u4f4d\u8f38\u5165\u3001\u6578\u4f4d\u611f\u6e2c\u7b49\uff0c\u90fd\u662f\u4ee3\u8868\u9019\u7a2e\u65b9\u5f0f\u53ea\u80fd\u8b80\u53d6\u72c0\u614b\u662fLOW\u6216\u662fHIGH\u5169\u7a2e\u72c0\u6cc1\uff0c\u4f8b\u5982\u7b49\u7b49\u8981\u505a\u7684\u4eba\u9ad4\u7d05\u5916\u7dda(SR-501\u6a21\u7d44)\u611f\u6e2c\uff0c\u8a72\u88dd\u7f6e\u53ea\u6703\u63d0\u4f9b&#8221;\u6709\u4eba&#8221;\u6216\u8005&#8221;\u7121\u4eba&#8221;\uff0c\u800c\u6c92\u6709\u5176\u4ed6\u7a2e\u72c0\u614b\uff0c\u76f8\u5c0d\u6578\u4f4d\u8b80\u53d6\u53e6\u5916\u4e00\u7a2e\u5247\u662f\u985e\u6bd4\u8b80\u53d6\uff0c\u4f8b\u5982\u96e8\u6ef4\u611f\u6e2c\u4f86\u8aaa\uff0c\u5b83\u6703\u63d0\u4f9b\u96e8\u6ef4\u5927\u5c0f\u7684\u53ef\u80fd\u6578\u503c\uff0c\u4ee5ESP32\u4f86\u8aaa\u5c31\u662f\u4ecb\u65bc0-4095\u4e4b\u9593\uff0c\u800c0\u4ee3\u8868\u96e8\u6ef4\u975e\u5e38\u591a\u30014095\u5247\u4ee3\u8868\u76ee\u524d\u662f\u4e7e\u7684\uff0c\u4f46\u53ef\u80fd\u4e5f\u6703\u8b80\u5230\u6578\u503c=1200\u4e4b\u985e\uff0c\u4ee3\u8868\u96e8\u6ef4\u4e0d\u5927\u4e5f\u4e0d\u5c0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-1\">\u611f\u6e2c\u6a21\u7d44\u8981\u7528\u54ea\u7a2e\u65b9\u5f0f\uff1f\u8981\u9078\u6578\u4f4d\u9084\u662f\u985e\u6bd4\uff1f<\/h2>\n\n\n\n<p>\u5fc5\u9808\u770b\u8a72\u611f\u6e2c\u6a21\u7d44\u63d0\u4f9b\u7684\u8b80\u53d6\u65b9\u5f0f\uff0c\u9019\u5fc5\u9808\u67e5\u770b\u898f\u683c\u6587\u4ef6\u6216\u8005\u8a62\u554f\u8ce3\u5bb6\uff0c\u7576\u7136\u4e5f\u53ef\u4ee5\u9760\u7d93\u9a57\uff0c\u4f8b\u5982\u4e0a\u8ff0\u7684\u96e8\u6ef4\u3001\u74e6\u65af\u6c23\u9ad4(mq\u7cfb\u5217)\u3001\u571f\u58e4\u2026\u7b49\u7b49\u90fd\u662f\u985e\u6bd4\uff0c\u800c\u4eba\u9ad4\u3001\u89f8\u63a7\u5247\u662f\u6578\u4f4d\uff0c\u6709\u4e9b\u6a21\u7d44\u5247\u6703\u5169\u7a2e\u90fd\u63d0\u4f9b\uff0c\u4f8b\u5982\u74e6\u65af\u6c23\u9ad4\u611f\u6e2c\u6709\u63d0\u4f9bDO(Digital Out)\u53caAO(Analog Out)\u8173\u4f4d\uff0c\u82e5\u662f\u9078\u64c7\u4f7f\u7528D0\uff0c\u5247\u7a0b\u5f0f\u4f7f\u7528\u6578\u4f4d\u8b80\u53d6(digitalRead)\uff0c\u82e5\u662f\u63a5\u5728A0\u5247\u662f\u9078\u64c7\u985e\u6bd4\u8b80\u53d6(Analog)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582441243-3816261721.png?w=1290&#038;ssl=1\" alt=\"\"\/><figcaption class=\"wp-element-caption\">\u611f\u6e2c\u6a21\u7d44\u7684\u6578\u4f4d\u985e\u6bd4\u8f38\u51fa\u8173\u4f4d<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-11\">\u4e00\u3001\u6750\u6599\u6e96\u5099<\/h2>\n\n\n\n<p>\u8981\u88fd\u4f5c\u4f86\u5ba2\u901a\u77e5\u5668\u9664\u4e86\u4e3b\u677fESP32\u53ca\u4e0a\u6b21\u7528\u7684LED\u4e4b\u5916\uff0c\u6211\u5011\u9084\u9700\u8981\u4eba\u9ad4\u7d05\u5916\u7dda(PIR)\u611f\u61c9\u5668\uff0c\u76ee\u524d\u5e02\u9762\u4e0a\u4e3b\u8981\u6709\u5169\u7a2e\u5982\u4e0b\u5716\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582361964-3831442656.png?resize=840%2C425&#038;ssl=1\" alt=\"\" width=\"840\" height=\"425\"\/><figcaption class=\"wp-element-caption\">\u4eba\u9ad4\u7d05\u5916\u7dda(PIR)\u611f\u61c9\u5668\u7a2e\u985e<\/figcaption><\/figure>\n\n\n\n<p>\u9019\u88e1\u5efa\u8b70\u8cfc\u8cb7\u5927\u9846SR-501\uff0c\u56e0\u70ba\u5b83\u6709\u65cb\u9215\u53ef\u4ee5\u8abf\u6574\u8a2d\u5b9a\u503c\u3002SR-501\u7684\u611f\u61c9\u53c3\u6578\u5982\u5716<\/p>\n\n\n\n<p>\u611f\u61c9\u89d2\u5ea6\u5927\u6982110\u5ea6<br>\u611f\u61c9\u8ddd\u96e2\u5927\u69823-7\u516c\u5c3a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582362635-945132524.png?resize=840%2C665&#038;ssl=1\" alt=\"\" width=\"840\" height=\"665\"\/><figcaption class=\"wp-element-caption\">SR-501\u7684\u611f\u61c9\u53c3\u6578<\/figcaption><\/figure>\n\n\n\n<p>\u53e6\u5916\u4e00\u500b\u8981\u6ce8\u610f\u7684\u90e8\u4efd\u5c31\u662fSR-501\u7684\u5169\u500b\u65cb\u9215\u7528\u9014\u53ca\u8173\u4f4d\uff0c<\/p>\n\n\n\n<p>\u654f\u611f\u5ea6\u65cb\u9215\uff1a\u611f\u61c9\u5230\u591a\u5f37\u7684\u7d05\u5916\u7dda\u624d\u8981\u89f8\u767c<br>\u6642\u9593\u5ef6\u9072\u65cb\u9215\uff1a\u89f8\u767c\u5f8c\uff0c\u8981\u591a\u5c11\u8981\u6301\u7e8c\u591a\u4e45\u6642\u9593\uff0c\u8abf\u6574\u7bc4\u570d\u662f3\u79d2-300\u79d2\u5de6\u53f3\uff0c\u5efa\u8b70\u9006\u6642\u91dd\u8f49\u5230\u5e95\uff0c\u6e1b\u5c11\u6301\u7e8c\u6642\u9593\u52303\u79d2\u5de6\u53f3<br>VCC\uff1a\u4f9b\u96fb\u7aef\uff0c\u4f7f\u75285V\u62163.3V\u7686\u53ef<br>OUT\uff1a\u8a0a\u865f\u8f38\u51fa\uff0c\u8f38\u51fa\u5230\u6307\u5b9aGPIO\uff0cLOW\u6216HIGH<br>GND\uff1a\u63a5\u5730\u7aef\uff0c\u63a5\u5230GND<br>\u89f8\u767c\u6a21\u5f0f\uff1a\u63a1\u9023\u7e8c\u89f8\u767c\u6216\u9593\u6bb5\u89f8\u767c\uff0c\u9019\u88e1\u5efa\u8b70\u4fdd\u6301\u5728LOW\u7684\u4f4d\u7f6e\uff08\u5982\u5716\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582362845-3873251827.png?resize=840%2C779&#038;ssl=1\" alt=\"\" width=\"840\" height=\"779\"\/><figcaption class=\"wp-element-caption\">SR-501\u8173\u4f4d\u8207\u65cb\u9215\u4f4d\u7f6e\u8aaa\u660e<\/figcaption><\/figure>\n\n\n\n<p>\u7531\u65bc\u4e00\u822c\u4e0a\u8ab2\u90fd\u5728\u6559\u5ba4\u5167\uff0c\u6559\u5ba4\u5167\u5230\u8655\u90fd\u662f\u4eba\u9ad4\u6240\u6563\u767c\u7684\u7d05\u5916\u7dda\uff0c\u56e0\u6b64\u7d93\u5e38\u6703\u6709\u795e\u5947\u7684\u89f8\u767c\u73fe\u8c61\uff0c\u7b46\u8005\u5efa\u8b70\u5c07\u5169\u500b\u65cb\u9215\u5168\u90e8\u9006\u6642\u91dd\u8f49\u5230\u5e95\uff0c\u4ee5\u964d\u4f4e\u654f\u611f\u5ea6\u53ca\u6301\u7e8c\u6642\u9593\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582394575-3853263496.png?w=1290&#038;ssl=1\" alt=\"\"\/><figcaption class=\"wp-element-caption\">SR-501\u65cb\u9215\u9748\u654f\u5ea6\u8abf\u6574<\/figcaption><\/figure>\n\n\n\n<p>\u5e02\u9762\u4e0aSR-501\u5ee0\u5bb6\u773e\u591a\uff0c\u4f46\u6709\u4e9b\u5ee0\u5bb6\u4e26\u672a\u6a19\u660eVCC\u3001OUT\u3001GND\u7b49\u8173\u4f4d\uff0c\u4e0d\u904e\u5176\u5be6\u662f\u56e0\u70ba\u4ed6\u5011\u6a19\u662f\u5728\u6b63\u9762\uff0c\u4e5f\u5c31\u662f\u767d\u8272\u6a62\u5713\u5f62\u5167\u90e8\uff0c\u5efa\u8b70\u62c6\u958b\u6aa2\u67e5\u78ba\u8a8d\u8173\u4f4d\uff0c\u82e5\u63d2\u932f\u6b63\u8ca0\u7d1a\u6703\u5c0e\u81f4\u96f6\u4ef6\u6545\u969c\u3002\u800c\u767d\u8272\u6a62\u5713\u5f62\u7684\u529f\u80fd\u662f\u7528\u4f86\u767c\u6563\u7d05\u5916\u7dda\uff0c\u8b93\u5b83\u611f\u61c9\u7bc4\u570d\u66f4\u5ee3\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582363553-1133462042_n.png?resize=838%2C387&#038;ssl=1\" alt=\"\" width=\"838\" height=\"387\"\/><figcaption class=\"wp-element-caption\">SR-501\u4eba\u9ad4\u611f\u6e2c\u5668\u5be6\u9ad4\u5716<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-esp321\">\u4e8c\u3001ESP32\u7dda\u8def\u4f48\u7f6e<\/h2>\n\n\n\n<p>\u9996\u5148\u6211\u5011\u9084\u662f\u8981\u5148\u53c3\u8003ESP32\u4f48\u7dda\u5716<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582394120-1611057319_n.png?resize=839%2C422&#038;ssl=1\" alt=\"\" width=\"839\" height=\"422\"\/><\/figure>\n\n\n\n<p>\u627f\u7e8c\u4e0a\u4e00\u7bc7\u5167\u5bb9(<a href=\"https:\/\/www.nmking.io\/index.php\/2022\/11\/17\/esp32_ch1-8\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7b2c\u4e09\u7bc7 ESP32\u6578\u4f4d\u8f38\u51fadigitalWrite<\/a>)\u5df2\u7d93\u63a5\u597d\u4e09\u8272LED\u5728\u9eb5\u5305\u677f\u53f3\u5074\u5e8f\u865f\u70ba4,5,7\u7684\u4f4d\u7f6e\uff0c\u800c\u9019\u5c0d\u61c9\u7684\u662fGPIO15\u30012\u30014\uff0c\u518d\u5c075V\u53caGND\u5f15\u5165\u9eb5\u5305\u677f\u53f3\u5074\u6b63\u8ca0\u96fb\u7b26\u865f\u7684\u76f4\u6392\uff0c\u9019\u7bc7\u6211\u5011\u9808\u518d\u63a5\u4e0aSR-501\uff0c\u6211\u5011\u5229\u7528\u516c\u6bcd\u675c\u90a6\u7dda\u5c07SR-501\u7684OUT\u7dda\u5c0d\u63a5\u5728\u53f38\uff0c\u4e5f\u5c31\u662fGPIO16\uff0cVCC\u5247\u63a55V\uff0cGND\u63a5GND\uff0c\u5b8c\u6574\u4f48\u7dda\u5716\u5982\u4e0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582394962-822995749.png?resize=840%2C665&#038;ssl=1\" alt=\"\" width=\"840\" height=\"665\"\/><figcaption class=\"wp-element-caption\">ESP32\u8207SR-501\u5b8c\u6574\u4f48\u7dda\u5716<\/figcaption><\/figure>\n\n\n\n<p>\u770b\u5230\u9019\u88e1\uff0c\u6709\u4e9b\u5b78\u904eESP8266\u6216Arduino UNO\u7684\u540c\u5b78\u6703\u6709\u7591\u554f\u7684\u662f\uff0cESP32\u8981\u600e\u9ebc\u5340\u5206\u6578\u4f4d\u3001\u985e\u6bd4\u8173\u4f4d\uff0c\u56e0\u70ba\u50b3\u7d71UNO\u53ca8266\u90fd\u6709\u5206\u6578\u4f4d\u8173\u4f4d\u6216\u985e\u6bd4\uff0c\u6578\u4f4d\u611f\u6e2c\u5668\u5fc5\u9808\u63d2\u5728\u6578\u4f4d\u8173\u4e0a\uff0c\u985e\u6bd4\u611f\u6e2c\u5fc5\u9808\u63d2\u5728\u985e\u6bd4\u8173\u4f4d\uff08\u5982\u4e0b\u5716\uff09\u3002\u7136\u800cESP32\u6700\u5927\u7684\u7279\u8272\u5c31\u662f\u4ed6\u7684\u8173\u4f4d\u4e0d\u5206\u6578\u4f4d\u985e\u6bd4\uff0c\u53ea\u8981\u5728\u7a0b\u5f0f\u4e2d\u5beb\u660e\u6578\u4f4d\u8b80\u53d6\u6216\u985e\u6bd4\u8b80\u53d6\u5373\u53ef\uff0c\u4e0d\u904e\u611f\u6e2c\u5fc5\u9808\u4f7f\u7528ADC\u8173\u4f4d\uff08\u7c89\u7d05\u6a19\u793a\uff09\uff0c\u76f8\u95dc\u8aaa\u660e\u8acb\u53c3\u95b1\uff1a<a href=\"https:\/\/www.nmking.io\/index.php\/2022\/09\/13\/esp32_ch1\/\" target=\"_blank\" rel=\"noreferrer noopener\">ESP32 Arduino\u958b\u767c\u74b0\u5883\u67b6\u8a2d\uff08\u53d6\u4ee3Arduino UNO\u53caESP8266\u9996\u9078\uff09<\/a>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582872275-2649592754.png?resize=840%2C699&#038;ssl=1\" alt=\"\" width=\"840\" height=\"699\"\/><figcaption class=\"wp-element-caption\">Arduino UNO\u6578\u4f4d\u3001\u985e\u6bd4\u8173\u4f4d\u4f4d\u7f6e<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-111\">\u4e09\u3001\u64b0\u5beb\u7a0b\u5f0f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-1-sr-501\">1.\u7c21\u6613SR-501\u6e2c\u8a66<\/h3>\n\n\n\n<p>\u9996\u5148\u6211\u5011\u5148\u6e2c\u8a66SR-501\u662f\u5426\u6b63\u5e38\uff0c\u6bcf\u4e00\u79d2\u6aa2\u6e2c\u4e00\u6b21\u662f\u5426\u6709\u4eba\u7d93\u904e\uff0c\u7576\u611f\u61c9\u5230\u7d05\u5916\u7dda\u6642\uff0c\u5728\u5e8f\u5217\u8996\u7a97\u986f\u793a\u300cComing\u300d\uff0c\u6c92\u6709\u611f\u6e2c\u5230\u6642\uff0c\u5247\u986f\u793a\u300cNone\u300d\u3002<\/p>\n\n\n\n<p>\u6578\u4f4d\u611f\u6e2c\u7528\u7684\u662fdigitalRead(\u8173\u4f4d)\uff0c\u800c\u8f38\u51fa\u7684\u503c\u4e5f\u53ea\u6709HIGH\u6216LOW\u5169\u7a2e\u72c0\u6cc1\uff0c\u56e0\u6b64\u53ef\u4ee5\u5229\u7528digitalRead(16) == HIGH\u4f86\u5224\u65b7\u662f\u5426\u6709\u4eba\u7d93\u904e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void setup() {\n  \/\/setup\u8a2d\u5b9a\uff0c\u53ea\u57f7\u884c\u4e00\u6b21\n  Serial.begin(115200);\n  pinMode(16, INPUT); \/\/\u5ba3\u544aGPIO 16\u4f5c\u70ba\u8f38\u5165\uff08\u4eba\u9ad4\u7d05\u5916\u7ddaSR-501\uff09\n}\nvoid loop() {\n  \/\/loop\u8ff4\u5708\uff0c\u91cd\u8907\u57f7\u884c\u4e0d\u505c\u6b62\n  if (digitalRead(16) == HIGH) {\n    Serial.println(\"Coming\");\/\/\u5075\u6e2c\u5230\u6709\u4eba\u7d93\u904e\n  }\n  else {\n    Serial.println(\"None\");\/\/\u5075\u6e2c\u7121\u4eba\u7d93\u904e\n  }\n  delay(1000);\/\/\u4f11\u606f1\u79d2\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582396496-2132136390_n.png?resize=842%2C658&#038;ssl=1\" alt=\"\" width=\"842\" height=\"658\"\/><figcaption class=\"wp-element-caption\">\u5e8f\u5217\u8996\u7a97\u611f\u61c9\u986f\u793a\u6548\u679c<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-2-led\">2.\u4ee5LED\u986f\u793a<\/h3>\n\n\n\n<p>\u63a5\u4e0b\u4f86\u6211\u5011\u4f86\u6574\u5408SR-505\u53ca\u7d05\u7da0LED\uff0c\u7576\u6709\u4eba\u7d93\u904e\u6642\uff0c\u986f\u793a\u7d05\u71c8\uff0c\u7121\u4eba\u7d93\u904e\u6642\uff0c\u986f\u793a\u7da0\u71c8\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void setup() {\n  \/\/setup\u8a2d\u5b9a\uff0c\u53ea\u57f7\u884c\u4e00\u6b21\n  Serial.begin(115200);\n  pinMode(16, INPUT); \/\/\u5ba3\u544aGPIO 16\u4f5c\u70ba\u8f38\u5165\uff08\u4eba\u9ad4\u7d05\u5916\u7ddaSR-501\uff09\n  pinMode(4, OUTPUT); \/\/\u5ba3\u544aGPIO 4\u4f5c\u70ba\u8f38\u51fa\uff08\u7d05LED\uff09\n  pinMode(15, OUTPUT); \/\/\u5ba3\u544aGPIO 15\u4f5c\u70ba\u8f38\u51fa\uff08\u7da0LED\uff09\n}\nvoid loop() {\n  \/\/loop\u8ff4\u5708\uff0c\u91cd\u8907\u57f7\u884c\u4e0d\u505c\u6b62\n  if (digitalRead(16) == HIGH) {\n    Serial.println(\"Coming\");\/\/\u5075\u6e2c\u5230\u6709\u4eba\u7d93\u904e\n    digitalWrite(4, HIGH); \/\/\u4eae\u7d05\u71c8\n    digitalWrite(15, LOW); \/\/\u95dc\u7da0\u71c8\n  }\n  else {\n    Serial.println(\"None\");\/\/\u5075\u6e2c\u7121\u4eba\u7d93\u904e\n    digitalWrite(4, LOW); \/\/\u95dc\u7d05\u71c8\n    digitalWrite(15, HIGH); \/\/\u4eae\u7da0\u71c8\n  }\n  delay(1000);\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582399195-675895405.gif?resize=840%2C474&#038;ssl=1\" alt=\"\" width=\"840\" height=\"474\"\/><figcaption class=\"wp-element-caption\">\u4eba\u9ad4\u611f\u6e2c\u5b8c\u6210\u6548\u679c<\/figcaption><\/figure>\n\n\n\n<p>\u9664\u4e86\u4eba\u9ad4\u611f\u6e2c\u5668\u4e4b\u5916\uff0c\u5176\u4ed6\u5f88\u591a\u611f\u6e2c\u4e5f\u90fd\u662f\u6578\u4f4d\u8b80\u53d6\uff0c\u4f8b\u5982\u89f8\u6478\u611f\u6e2c\uff0c\u63a5\u6cd5\u8207\u7a0b\u5f0f\u90fd\u76f8\u540c\uff0c\u8acb\u8b80\u8005\u81ea\u884c\u6e2c\u8a66\u3002<br>\u5c0d\u4e86\u76ee\u524d\u5927\u90e8\u5206\u611f\u6e2c\u90fd\u662f3.3V\u30015V\u901a\u7528\uff0c\u4f46\u662f\u6709\u4e9b\u5247\u662f\u50c5\u80fd\u75283.3V\uff0c\u50cf\u4e0b\u9762\u9019\u500b\u89f8\u6478\u611f\u6e2c\uff0c\u4e00\u5b9a\u8981\u75283.3V\uff0c\u4e0d\u7136\u6703\u5192\u7159\u5594\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1582460435-3391344929.png?resize=398%2C320&#038;ssl=1\" alt=\"\" width=\"398\" height=\"320\"\/><figcaption class=\"wp-element-caption\">\u89f8\u6478\u611f\u6e2c\u5668<\/figcaption><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"htoc-1111\" style=\"font-size:clamp(16.293px, 1.018rem + ((1vw - 3.2px) * 0.68), 25px);\">\u5ef6\u4f38\u95b1\u8b80<\/h4>\n\n\n\n<p class=\"has-background has-medium-font-size\" style=\"background-color:#f2f2f2\">????   <a href=\"https:\/\/www.nmking.io\/index.php\/2022\/11\/18\/esp32_ch1-10\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7b2c\u4e94\u7bc7 ESP32 \u4f86\u5ba2\u5831\u77e5\u6a5f\uff1a\u9304\u653e\u97f3\u6a21\u7d44(ISD1820)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7bc7\u6211\u5011\u8981\u5229\u7528ESP32\u7684\u6578\u4f4d\u8b80\u53d6(digitalRead)\u4f86\u88fd\u4f5c\u4f86\u5ba2\u901a\u77e5\u5668\u300c\u7576\u6709\u4eba\u7d93\u904e\u6642\u6703\u4eae\u7d05\u71c8\uff0c\u6c92\u4eba\u7d93\u904e\u6642 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1,29],"tags":[],"class_list":["post-574","post","type-post","status-publish","format-standard","hentry","category-esp32","category-esp32-started"],"blocksy_meta":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/574","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/comments?post=574"}],"version-history":[{"count":3,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/574\/revisions"}],"predecessor-version":[{"id":922,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/574\/revisions\/922"}],"wp:attachment":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/media?parent=574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/categories?post=574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/tags?post=574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}