\u70b9\u4eaeled\u706f\u73e0\u975e\u5e38\u7b80\u5355\uff0c\u9633\u6781\u7ed9\u9ad8\u7535\u5e73\uff0c\u9634\u6781\u63a5\u5730\uff08\u4f4e\u7535\u5e73\uff09\u5f62\u6210\u56de\u8def\u5373\u53ef\u3002<\/p>\n
\u9633\u6781\u8fde\u63a5goip0\uff0c\u9634\u6781\u8fde\u63a5GND\uff08\u63a5\u5730\uff0c0\u7535\u538b\uff09\uff0c\u5f62\u6210\u56de\u8def\uff0c\u7136\u540e\u7ed9gpio0\u4e00\u4e2a\u9ad8\u7535\u538b\u5373\u53ef\u70b9\u4eae\u3002<\/p>\n
![\"file\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/p>\n
\u4e0b\u4e3aArduino\u4ee3\u7801\uff0c\u975e\u5e38\u7684\u7b80\u5355\uff0c\u5c06\u5bf9\u5e94\u5f15\u811a\u8bbe\u5b9a\u4e3a\u8f93\u51fa\uff0c\u7136\u540e\u7ed9\u4e00\u4e2a\u9ad8\u7535\u5e73\u5373\u53ef\u3002<\/p>\n
const int GPIO_LED_1 = 0;\nvoid setup() {\n pinMode(GPIO_LED_1, OUTPUT);\n digitalWrite(GPIO_LED_1, HIGH);\n}\n\nvoid loop() {\n}<\/code><\/pre>\n\n[!INFO]-<\/p>\n
\n- \u8fd9\u91cc\u5728\u4eff\u771f\u73af\u5883\u4e2d\u7701\u7565\u4e86\u7535\u963b\uff0c\u771f\u5b9e\u7684\u7535\u8def\u4e2d\uff0c\u5e94\u5f53\u5728\u7ed9\u4e88\u4e00\u4e2a\u5408\u9002\u7684\u7535\u963b\uff0cESP32\u7684\u7535\u538b\u662f3.3V\uff0c\u53ef\u80fd\u4f1a\u7531\u4e8e\u7535\u6d41\u8fc7\u5927\u800c\u70e7\u574fled\u706f\u73e0\u3002<\/li>\n
- \u8fd9\u91ccpinMode\u7528\u4e8e\u8bbe\u5b9a\u5f15\u811a\u7684\u5de5\u4f5c\u6a21\u5f0f\u3002\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u5c06\u5176\u8bbe\u5b9a\u4e3a\u4e86\u8f93\u51fa\u6a21\u5f0f\uff0c\u53ef\u4ee5\u4e3b\u52a8\u63a7\u5236\u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73\u3002\u9664\u6b64\u4e4b\u5916\u8fd8\u6709INPUT\u548cINPUT_PULLUP\u7b49\u6a21\u5f0f\u3002INPUT_PULLUP\u5219\u662f\u9ed8\u8ba4\u9ad8\u7535\u5e73\uff0c\u63a5\u5730\u65f6\u53d8\u4e3a\u4f4e\u7535\u5e73\uff0cINPUT\u5219\u4e0d\u786e\u5b9a\u9ad8\u4f4e\u7535\u5e73\uff0c\u9700\u8981\u5916\u90e8\u7684\u4e0a\u4e0b\u62c9\u7535\u963b\u786e\u5b9a\u3002\u4e0d\u540c\u5f15\u811a\u6a21\u5f0f\u95f4\u7684\u533a\u522b\u5b9e\u9645\u4e0a\u5c31\u5728\u4e8e\u7535\u5e73\u7684\u63a7\u5236\u65b9\u5f0f\u548c\u9ed8\u8ba4\u72b6\u6001\u3002<\/li>\n
- digitalWrite\u63a7\u5236\u4e86\u7535\u5e73\uff0c\u8fd9\u91cc\u7ed9\u5b9a\u4e86\u4e00\u4e2a\u9ad8\u7535\u5e73\uff0c\u4f7f\u5f15\u811a\u9664\u6709\u4e86\u4e00\u4e2a3.3v\u7684\u7535\u538b\uff0c\u4f7fled\u706f\u4e24\u4fa7\u4ea7\u751f\u7535\u52bf\u5dee\uff0c\u53ef\u4ee5\u70b9\u4eae\u3002<\/li>\n
- \u6240\u4ee5\u7efc\u4e0a\u6240\u8ff0\uff0c\u53ea\u7528
pinMode(GPIO_LED_1, OUTPUT);<\/code>\u540c\u6837\u53ef\u4ee5\u70b9\u4eaeled\u706f\u73e0<\/li>\n<\/ol>\n<\/blockquote>\nLED\u706f\u73e0\u4ea4\u66ff\u95ea\u70c1<\/h2>\n
\u60f3\u8ba9\u4e00\u4e2a\u6216\u591a\u4e2aled\u706f\u73e0\u4ea4\u66ff\u95ea\u70c1\uff0c\u53ea\u9700\u8981\u5faa\u73af\u7ed9\u4e88\u706f\u73e0\u6240\u5728\u7684\u5f15\u811a\u9ad8\u4f4e\u7535\u5e73\u5373\u53ef\u3002\u9ad8\u7535\u5e73\u70b9\u4eae\uff0c\u4f4e\u7535\u5e73\u4e0d\u4eae\u3002<\/p>\n
\u8fd9\u91cc\u6dfb\u52a0\u4e86\u4e00\u4e2a\u9633\u6781\u8fde\u63a5\u57284\u53f7\u5f15\u811a\uff0c\u9634\u6781\u540c\u6837\u63a5\u5730\u7684\u7eff\u8272\u706f\u73e0\u3002
\n
<\/div><\/p>\n
\u8fd9\u91cc\u7531\u4e8e\u7528\u5230\u4e86\u4e24\u9897\u706f\u73e0\uff0c\u6240\u4ee5\u9700\u8981\u8bbe\u5b9a\u4e24\u4e2a\u5f15\u811a\u7684\u72b6\u6001\u3002\u7136\u540e\u628a\u5faa\u73af\u6267\u884c\u7684\u903b\u8f91\u653e\u5728loop\u5185\uff0c\u5faa\u73af\u6267\u884c\uff0c\u5148\u540e\u7ed9\u4e24\u9897\u706f\u73e0\u7684\u9633\u6781\u8bbe\u5b9a\u9ad8\u4f4e\u7535\u5e73\u4ea4\u66ff\uff0c\u8bbe\u5b9a\u4e00\u5b9a\u7684\u5ef6\u65f6\uff0c\u5373\u53ef\u5b9e\u73b0\u4ea4\u66ff\u95ea\u70c1\u7684\u72b6\u6001\u3002<\/p>\n
const int GPIO_LED_1 = 0;\nconst int GPIO_LED_2 = 4;\nvoid setup() {\n pinMode(GPIO_LED_1, OUTPUT);\n pinMode(GPIO_LED_2, OUTPUT);}\n\nvoid loop() {\n \/\/ \u70b9\u4eae\u7ea2\u8272,\u7184\u706d\u7eff\u8272\n digitalWrite(GPIO_LED_1, HIGH);\n digitalWrite(GPIO_LED_2, LOW);\n\n \/\/ \u5ef6\u8fdf200\u6beb\u79d2\n delay(200);\n\n \/\/ \u70b9\u4eae\u7eff\u8272\uff0c\u7184\u706d\u7ea2\u8272\n digitalWrite(GPIO_LED_1, LOW);\n digitalWrite(GPIO_LED_2, HIGH);\n\n \/\/ \u5ef6\u8fdf200\u6beb\u79d2\n delay(200);\n}<\/code><\/pre>\n\u6548\u679c\u5982\u4e0b<\/p>\n
<\/div><\/p>\n
LED\u6d41\u6c34\u706f<\/h2>\n
\u65e2\u7136\u53ef\u4ee5\u4e24\u9897\u706f\u73e0\u4ea4\u66ff\u95ea\u70c1\uff0c\u5c31\u540c\u7406\u6309\u7167\u7c7b\u4f3c\u7684\u903b\u8f91\u5b9e\u73b0\u591a\u4e2aled\u7684\u6d41\u6c34\u706f\uff0c\u53ea\u9700\u8981\u591a\u8fde\u63a5\u51e0\u9897\u706f\u73e0\u5373\u53ef\u3002<\/p>\n
\u8fd9\u91cc\u6dfb\u52a0\u4e86\u5341\u9897\u706f\u73e0\uff0c\u5206\u522b\u8fde\u63a5\u4e860\uff0c4\uff0c16\uff0c17\uff0c5\uff0c18\uff0c19\uff0c21\uff0c22\uff0c23\u53f7\u5f15\u811a\uff0c\u6309\u7167\u4e0a\u9762\u76f8\u540c\u7684\u65b9\u6cd5\u5206\u522b\u4ea4\u66ff\u8bbe\u5b9a\u9ad8\u4f4e\u7535\u5e73\u5373\u53ef\u3002\u4ee3\u7801\u5982\u4e0b<\/p>\n
\/\/ \u5b9a\u4e49LED\u5f15\u811a\nconst int LED_COUNT = 10;\nconst int LED_PINS[LED_COUNT] = {0, 4, 16, 17, 5, 18, 19, 21, 22, 23};\nconst int DELAY_MS = 100; \/\/ \u6d41\u6c34\u706f\u95f4\u9694\n\nvoid setup() {\n \/\/ \u521d\u59cb\u5316\u6240\u6709LED\u4e3a\u8f93\u51fa\u6a21\u5f0f\n for(int i = 0; i < LED_COUNT; i++) {\n pinMode(LED_PINS[i], OUTPUT);\n }\n}\n\nvoid loop() {\n \/\/ \u4ece\u5de6\u5230\u53f3\u6d41\u52a8\n for(int i = 0; i < LED_COUNT; i++) {\n digitalWrite(LED_PINS[i], HIGH);\n delay(DELAY_MS);\n digitalWrite(LED_PINS[i], LOW);\n }\n\n \/\/ \u4ece\u53f3\u5230\u5de6\u6d41\u52a8\uff0c\u53cd\u5411\u904d\u5f15\u811a\n for(int i = LED_COUNT-1; i >= 0; i--) {\n digitalWrite(LED_PINS[i], HIGH);\n delay(DELAY_MS);\n digitalWrite(LED_PINS[i], LOW);\n }\n}<\/code><\/pre>\n\u6548\u679c\u5982\u4e0b<\/p>\n
<\/div><\/p>\n
\u66f4\u591aLED\u7684\u706f\u73e0\u7684\u6d41\u6c34\u706f<\/h2>\n
\u4e0a\u8ff0\u7684\u4ee3\u7801\u53ef\u4ee5\u5f88\u597d\u7684\u5b9e\u73b0\u4e00\u4e2a\u6d41\u6c34\u706f\uff0c\u4f46\u662f\u6bcf\u4e00\u4e2a\u706f\u73e0\u5360\u7528\u4e86\u4e00\u4e2agpio\u5f15\u811a\uff0c\u5982\u679c\u60f3\u8981\u6dfb\u52a0\u66f4\u591a\u7684\u706f\u73e0\uff0c\u706f\u73e0\u6570\u91cf\u5927\u4e8e\u5f15\u811a\uff0c\u5c31\u65e0\u6cd5\u5b9e\u73b0\u4e86\uff0c\u6240\u4ee5\u8fd9\u91cc\u5f15\u5165\u4e00\u4e2aIC\u6765\u5b9e\u73b0\u63a7\u5236\u66f4\u591a\u7684\u706f\u73e0\uff1a74HC595\u3002<\/p>\n
74HC595\u82af\u7247\u7b80\u4ecb<\/h3>\n
74HC595\u662f\u4e00\u4e2a\u975e\u5e38\u5b9e\u7528\u7684\u96c6\u6210\u7535\u8def\u82af\u7247\uff0c\u5b83\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ef\u4ee5\u7528\u5c11\u91cf\u7684\u8f93\u5165\u63a7\u5236\u591a\u4e2a\u8f93\u51fa\u3002\u60f3\u8c61\u4e00\u4e0b\uff0c\u5982\u679c\u4f60\u6709\u4e00\u4e2a8\u4f4d\u7684\u4e8c\u8fdb\u5236\u6570\u5b57(\u6bd4\u598210101010)\uff0c74HC595\u53ef\u4ee5\u628a\u8fd9\u4e2a\u6570\u5b57\u7684\u6bcf\u4e00\u4f4d\u90fd\u8f6c\u6362\u6210\u4e00\u4e2a\u72ec\u7acb\u7684\u8f93\u51fa\u7aef\u53e3\uff0c\u8f93\u51fa\u9ad8\u7535\u5e73(1)\u6216\u4f4e\u7535\u5e73(0)\u3002<\/p>\n
\u8fd9\u4e2a\u82af\u7247\u4e3b\u8981\u6709\u4e09\u4e2a\u91cd\u8981\u7684\u5de5\u4f5c\u7279\u6027\uff1a<\/p>\n
\n- \u4e32\u884c\u8f93\u5165\uff0c\u5e76\u884c\u8f93\u51fa<\/strong> – \u53ef\u4ee5\u4e00\u4f4d\u4e00\u4f4d\u5730\u8f93\u5165\u6570\u636e(\u50cf\u961f\u5217\u4e00\u6837)\uff0c\u4f46\u53ef\u4ee5\u540c\u65f6\u8f93\u51fa8\u4f4d<\/li>\n
- \u591a\u7247\u7ea7\u8054<\/strong> – \u53ef\u4ee5\u628a\u591a\u4e2a\u82af\u7247\u4e32\u8d77\u6765\uff0c\u6bd4\u5982\u75283\u4e2a\u82af\u7247\u5c31\u80fd\u63a7\u523624\u4e2aLED<\/li>\n
- \u5e26\u9501\u5b58\u529f\u80fd<\/strong> – \u53ef\u4ee5\u5148\u51c6\u5907\u597d\u6240\u6709\u6570\u636e\uff0c\u7136\u540e\u4e00\u6b21\u6027\u8f93\u51fa\uff0c\u907f\u514d\u4e2d\u95f4\u72b6\u6001\u7684\u663e\u793a<\/li>\n<\/ol>\n
\u5173\u952e\u5f15\u811a\u53ca\u5176\u529f\u80fd\uff08\u5c31\u50cf\u82af\u7247\u7684"\u63a5\u53e3"\uff09\uff1a<\/p>\n
\n- DS (\u4e32\u884c\u6570\u636e\u8f93\u5165)<\/strong> – \u7528\u6765\u8f93\u51650\u62161\u7684\u6570\u636e\uff0c\u5c31\u50cf\u5f80\u74f6\u5b50\u91cc\u4e00\u6ef4\u4e00\u6ef4\u52a0\u6c34<\/li>\n
- SHCP (\u79fb\u4f4d\u5bc4\u5b58\u5668\u65f6\u949f)<\/strong> – \u6bcf\u6b21\u53d8\u5316\u4f1a\u8ba9\u6570\u636e\u5f80\u91cc\u79fb\u52a8\u4e00\u4f4d\uff0c\u5c31\u50cf\u628a\u74f6\u5b50\u91cc\u7684\u6c34\u5f80\u524d\u63a8<\/li>\n
- STCP (\u5b58\u50a8\u5bc4\u5b58\u5668\u65f6\u949f)<\/strong> – \u51b3\u5b9a\u4ec0\u4e48\u65f6\u5019\u628a\u6570\u636e\u663e\u793a\u51fa\u6765\uff0c\u50cf\u662f\u6253\u5f00\u74f6\u76d6\u8ba9\u6c34\u6d41\u51fa\u6765<\/li>\n<\/ul>\n
\u6240\u4ee5\u5c06\u8fd9\u4e09\u4e2a\u5f15\u811a\u8fde\u63a5esp32\u7684\u4e09\u4e2agpio\u5f15\u811a\u5373\u53ef\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u9700\u8981\u5c06VCC\u5f15\u811a\u8fde\u63a5\u4f9b\u7535\uff0cGND\u5f15\u811a\u63a5\u5730\uff0c\u5982\u4e0b\u56fe<\/p>\n
<\/div><\/p>\n
\u6570\u636e\u4f20\u8f93\u539f\u7406<\/h3>\n
\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u53ef\u4ee5\u7c7b\u6bd4\u4e00\u4e2a8\u683c\u7684"\u5c0f\u706b\u8f66"\uff1a<\/p>\n
\n- DS\u5f15\u811a\u5c31\u50cf\u88c5\u8d27\u7684\u5165\u53e3\uff0c\u6bcf\u6b21\u53ea\u80fd\u653e\u5165\u4e00\u4e2a0\u62161<\/li>\n
- SHCP\u5c31\u50cf\u706b\u8f66\u7684\u524d\u8fdb\u4fe1\u53f7\uff0c\u6bcf\u6765\u4e00\u6b21\u4fe1\u53f7\uff0c\u706b\u8f66\u524d\u8fdb\u4e00\u683c<\/li>\n
- STCP\u5c31\u50cf\u53d1\u8f66\u4fe1\u53f7\uff0c\u5f538\u4e2a\u6570\u636e\u90fd\u88c5\u597d\u540e\uff0c\u4e00\u6b21\u6027\u53d1\u51fa\u53bb<\/li>\n<\/ol>\n
\u4ee5\u4e0b\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u5411\u82af\u7247\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u636e\uff1a<\/p>\n
void shiftOut(uint8_t data) {\n \/\/ \u4ece\u6700\u9ad8\u4f4d(MSB)\u5f00\u59cb\u53d1\u9001\uff0c\u5c31\u50cf\u4ece\u706b\u8f66\u5934\u5f00\u59cb\u88c5\u8d27\n for(int i = 7; i >= 0; i--) {\n digitalWrite(clockPin, LOW); \/\/ \u51c6\u5907\u63a5\u6536\u65b0\u6570\u636e\n\n \/\/ (data >> i) & 0x01 \u7684\u542b\u4e49\uff1a\n \/\/ data >> i\uff1a\u628a\u6570\u636e\u53f3\u79fbi\u4f4d\uff0c\u628a\u8981\u5904\u7406\u7684\u4f4d\u653e\u5230\u6700\u53f3\u8fb9\n \/\/ & 0x01\uff1a\u53ea\u4fdd\u7559\u6700\u540e\u4e00\u4f4d\uff0c\u5176\u4ed6\u4f4d\u90fd\u53d8\u62100\n uint8_t bitValue = (data >> i) & 0x01;\n\n digitalWrite(dataPin, bitValue); \/\/ \u653e\u5165\u6570\u636e\n digitalWrite(clockPin, HIGH); \/\/ \u4e0a\u5347\u6cbf\uff0c\u786e\u8ba4\u6570\u636e\n \/\/ \u8fd9\u91cc\u7684"\u4e0a\u5347\u6cbf"\u6307\u7684\u662f\u4fe1\u53f7\u4ece\u4f4e\u7535\u5e73(0)\u53d8\u5230\u9ad8\u7535\u5e73(1)\u7684\u8fc7\u7a0b\n }\n}<\/code><\/pre>\n\u5f53\u6211\u4eec\u9700\u8981\u63a7\u5236\u591a\u4e2a595\u82af\u7247\u65f6\uff0c\u5c31\u9700\u8981\u4e00\u6b21\u53d1\u9001\u591a\u4e2a\u5b57\u8282\uff1a<\/p>\n
void shiftMultiBytes(uint8_t* data, int numBytes) {\n digitalWrite(latchPin, LOW); \/\/ \u5173\u95ed\u8f93\u51fa\uff0c\u51c6\u5907\u63a5\u6536\u65b0\u6570\u636e\n\n \/\/ \u4ece\u6700\u540e\u4e00\u7247\u5f00\u59cb\u53d1\u9001\uff0c\u56e0\u4e3a\u6570\u636e\u8981\u4e00\u76f4\u5f80\u540e\u4f20\n for(int i = numBytes-1; i >= 0; i--) {\n shiftOut(data[i]); \/\/ \u53d1\u9001\u6bcf\u4e2a\u5b57\u8282\n }\n\n digitalWrite(latchPin, HIGH); \/\/ \u6253\u5f00\u8f93\u51fa\uff0c\u6570\u636e\u4f1a\u540c\u65f6\u663e\u793a\n}<\/code><\/pre>\n\u5b8c\u6574\u903b\u8f91\u4ee3\u7801<\/h3>\n\n\/\/ \u5b9a\u4e49595\u4e32\u8054\u4f7f\u7528\u7684\u5f15\u811a\nconst int dataPin = 2; \/\/ DS(\u6570\u636e\u8f93\u5165)\nconst int latchPin = 0; \/\/ STCP(\u5b58\u50a8\u5bc4\u5b58\u5668\u65f6\u949f)\nconst int clockPin = 4; \/\/ SHCP(\u79fb\u4f4d\u5bc4\u5b58\u5668\u65f6\u949f)\nconst int NUM_REGISTERS = 6; \/\/ 595\u82af\u7247\u6570\u91cf\nconst int NUM_LEDS = NUM_REGISTERS * 8; \/\/ \u603bLED\u6570(\u6bcf\u7247595\u63a7\u52368\u4e2aLED)\nconst int DELAY_MS = 100; \/\/ \u6d41\u6c34\u706f\u79fb\u52a8\u95f4\u9694\n\nvoid setup() {\n \/\/ \u8bbe\u7f6e595\u63a7\u5236\u5f15\u811a\u4e3a\u8f93\u51fa\u6a21\u5f0f\n pinMode(dataPin, OUTPUT); \/\/ \u6570\u636e\u7ebf\n pinMode(clockPin, OUTPUT); \/\/ \u65f6\u949f\u7ebf\n pinMode(latchPin, OUTPUT); \/\/ \u9501\u5b58\u7ebf\n}\n\n\/\/ \u5411595\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\nvoid shiftOut(uint8_t data) {\n \/\/ \u4ece\u6700\u9ad8\u4f4d(MSB)\u5f00\u59cb\u53d1\u9001\n for(int i = 7; i >= 0; i--) {\n digitalWrite(clockPin, LOW); \/\/ \u65f6\u949f\u4f4e\u7535\u5e73\n\n \/\/ \u83b7\u53d6\u5f53\u524d\u4f4d\u7684\u503c\u5e76\u6253\u5370\n uint8_t bitValue = (data >> i) & 0x01;\n Serial.print(bitValue);\n\n digitalWrite(dataPin, bitValue); \/\/ \u8bbe\u7f6e\u6570\u636e\u4f4d\n digitalWrite(clockPin, HIGH); \/\/ \u65f6\u949f\u4e0a\u5347\u6cbf\uff0c\u6570\u636e\u88ab\u79fb\u5165\n }\n Serial.println(); \/\/ \u6362\u884c\n}\n\n\/\/ \u5411\u591a\u7247\u7ea7\u8054\u7684595\u53d1\u9001\u6570\u636e\nvoid shiftMultiBytes(uint8_t* data, int numBytes) {\n digitalWrite(latchPin, LOW); \/\/ \u51c6\u5907\u6570\u636e\u4f20\u8f93\n\n \/\/ \u4ece\u6700\u540e\u4e00\u7247595\u5f00\u59cb\u53d1\u9001\n for(int i = numBytes-1; i >= 0; i--) {\n shiftOut(data[i]);\n }\n\n digitalWrite(latchPin, HIGH); \/\/ \u6570\u636e\u9501\u5b58\u8f93\u51fa\n}\n\nvoid loop() {\n uint8_t ledData[NUM_REGISTERS] = {0}; \/\/ \u5b58\u50a8\u6bcf\u4e2a595\u7684LED\u72b6\u6001\n\n \/\/ \u6b63\u5411\u6d41\u52a8(\u4ece\u7b2c\u4e00\u4e2aLED\u5230\u6700\u540e\u4e00\u4e2a)\n for(int i = 0; i < NUM_LEDS; i++) {\n memset(ledData, 0, NUM_REGISTERS); \/\/ \u6e05\u7a7a\u6240\u6709LED\u72b6\u6001\n ledData[i \/ 8] = (1 << (i % 8)); \/\/ \u8bbe\u7f6e\u5f53\u524dLED\u4f4d\uff0c\u901a\u8fc7\u4f4d\u79fb\n shiftMultiBytes(ledData, NUM_REGISTERS);\n delay(DELAY_MS);\n }\n\n \/\/ \u53cd\u5411\u6d41\u52a8(\u4ece\u6700\u540e\u4e00\u4e2aLED\u5230\u7b2c\u4e00\u4e2a)\n for(int i = NUM_LEDS-1; i >= 0; i--) {\n memset(ledData, 0, NUM_REGISTERS);\n ledData[i \/ 8] = (1 << (i % 8));\n shiftMultiBytes(ledData, NUM_REGISTERS);\n delay(DELAY_MS);\n }\n}<\/code><\/pre>\n\u5de5\u4f5c\u903b\u8f91\u8be6\u89e3<\/h3>\n
\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u66f4\u5177\u4f53\u7684\u4f8b\u5b50\u6765\u7406\u89e3595\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1a<\/p>\n
\/\/ \u5047\u8bbe\u6211\u4eec\u8981\u70b9\u4eae3\u4e2a595\u82af\u7247\u63a7\u5236\u7684\u7b2c17\u4e2aLED\n\/\/ 17 = 8 + 8 + 1\uff0c\u6240\u4ee5\u8fd9\u4e2aLED\u5728\u7b2c\u4e09\u7247595\u4e0a\n\n\/\/ 1. \u786e\u5b9aLED\u4f4d\u7f6e\nint ledIndex = 17;\nint chipIndex = ledIndex \/ 8; \/\/ = 2\uff0c\u8868\u793a\u7b2c\u4e09\u7247\u82af\u7247\nint pinIndex = ledIndex % 8; \/\/ = 1\uff0c\u8868\u793a\u8be5\u82af\u7247\u7684\u7b2c2\u4e2a\u8f93\u51fa\n\n\/\/ 2. \u8bbe\u7f6e\u6570\u636e\nuint8_t ledData[3] = {0, 0, 0}; \/\/ 3\u7247595\uff0c\u521d\u59cb\u5168\u7f6e0\nledData[chipIndex] = (1 << pinIndex); \/\/ \u53ea\u5c06\u76ee\u6807\u4f4d\u7f6e1\n\n\/\/ 3. \u53d1\u9001\u6570\u636e\nshiftMultiBytes(ledData, 3);<\/code><\/pre>\n\u5b9e\u9645\u4e0aArduino\u662f\u6709shiftOut<\/code>\u51fd\u6570\u5c01\u88c5\u7684\uff0c\u4f46\u662f\u8fd9\u91cc\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u7528\u57fa\u7840\u903b\u8f91\u81ea\u884c\u5b9e\u73b0\u4e86\u3002<\/p>\n\u5bf9\u4e8e\u5927\u91cf\u7684\u706f\u73e0\uff0c\u4e3b\u8981\u65b9\u6848\u5c31\u662f\u4f7f\u752874HC595\u6765\u6269\u5c55gpio\u3002\u5176\u53ef\u4ee5\u5bf9\u4e00\u4e2a\u8f93\u5165\u5e76\u884c\u8f93\u51fa\uff0c\u4e5f\u5c31\u662f\u8bf4\u5bf9\u4e00\u4e2a8\u4f4d\u7684\u8f93\u5165\u5206\u522b\u8f93\u51fa\u5230\u51768\u4e2a\u5f15\u811a\u4e0a\uff0c\u5e76\u4e14ic\u4e4b\u95f4\u53ef\u4ee5\u4e32\u8054\u4f7f\u7528\uff0c\u95f4\u63a5\u5b9e\u73b0\u4e86\u901a\u8fc7\u4e09\u4e2a\u5f15\u811a\u6765\u6269\u5c55\u51fa\u65e0\u9650\u4e2a\u5f15\u811a\u3002<\/p>\n
\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\u6765\u7406\u89e3\u72b6\u6001\u63a7\u5236\uff1a<\/p>\n
\/\/ \u793a\u4f8b\uff1a\u70b9\u4eae\u7b2c\u4e00\u4e2aLED\nuint8_t ledData[NUM_REGISTERS] = {0}; \/\/ \u5168\u90e8\u521d\u59cb\u5316\u4e3a0\nledData[0] = 0b00000001; \/\/ \u7b2c\u4e00\u4e2a595\u7684\u7b2c\u4e00\u4e2a\u8f93\u51fa\u7f6e1\nshiftMultiBytes(ledData, NUM_REGISTERS);\n\n\/\/ \u793a\u4f8b\uff1a\u70b9\u4eae\u7b2c\u4e5d\u4e2aLED\uff08\u7b2c\u4e8c\u4e2a595\u7684\u7b2c\u4e00\u4e2a\u8f93\u51fa\uff09\nledData[1] = 0b00000001; \/\/ \u7b2c\u4e8c\u4e2a595\u7684\u7b2c\u4e00\u4e2a\u8f93\u51fa\u7f6e1\nshiftMultiBytes(ledData, NUM_REGISTERS);<\/code><\/pre>\n\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4e3a\u4e86\u65b9\u4fbf595\u82af\u7247\u7684\u6269\u5c55\uff0c\u5f15\u5165\u4e86\u4e00\u4e2a\u603b595\u82af\u7247\u6570\u91cf\u7684\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u5b58\u653e\u4e00\u4e2a8\u4f4d\u7684\u6570\u503c\u7528\u4e8e\u63a7\u5236\u6bcf\u4e2a595\u82af\u7247\u6269\u5c55\u51fa\u76848\u4e2a\uff08Q0-Q7\uff09\u5f15\u811a\uff0c\u6240\u4ee5\u603b\u706f\u73e0\u6570\u91cf\u5c31\u662f595\u82af\u7247\u6570*8\u3002<\/p>\n
\u6570\u636e\u7684\u8ba1\u7b97\u548c\u53d1\u9001\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n
\/\/ \u8ba1\u7b97\u5f53\u524dLED\u5c5e\u4e8e\u54ea\u4e2a595\u82af\u7247\nint chipIndex = ledIndex \/ 8;\n\/\/ \u8ba1\u7b97\u5f53\u524dLED\u5728\u82af\u7247\u4e0a\u7684\u4f4d\u7f6e\nint pinIndex = ledIndex % 8;\n\/\/ \u8bbe\u7f6e\u5bf9\u5e94\u4f4d\nledData[chipIndex] = (1 << pinIndex);<\/code><\/pre>\n\u4e0a\u6587\u4e2d\u63d0\u5230\uff0c595\u82af\u7247\u53ef\u4ee5\u63a5\u6536\u4e00\u4e2a8\u4f4d\u7684\u8f93\u5165\uff0c\u5206\u522b\u8f93\u51fa\u52308\u4e2a\u5f15\u811a\uff0c\u6240\u4ee5\u63a7\u5236led\u706f\u73e0\u7684\u4e00\u6b21\u4eae\u8d77\uff0c\u53ea\u9700\u8981\u6309\u987a\u5e8f\u5411595\u82af\u7247\u53d1\u9001\u706f\u73e0\u72b6\u6001\u6570\u7ec4000…\uff0c100…\uff0c010…\uff0c001…\uff0c0001…,\u4ee5\u6b64\u7c7b\u63a8\uff0c595\u82af\u7247\u5c31\u662f\u5206\u522b\u57fa\u4e8e\u5bf9\u5e94\u5f15\u811a\u4e3a\u9ad8\u7535\u5e73\uff0c\u5373\u53ef\u63a7\u5236led\u706f\u73e0\u7684\u4f9d\u6b21\u4eae\u706d\u3002<\/p>\n
\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u540c\u6837\u4e3a\u4e86\u65b9\u4fbf\u6269\u5c55\uff0c595\u82af\u7247\u6570\u91cf\u5e76\u6ca1\u6709\u76f4\u63a5\u5199\u6b7b\u5728\u4ee3\u7801\u903b\u8f91\u4e2d\uff0c\u800c\u662f\u901a\u8fc7\u9884\u5148\u7684\u5e38\u91cf\u8bbe\u5b9a\uff0c\u901a\u8fc7\u5f53\u524d\u706f\u73e0\u7684\u7d22\u5f15\/8\u6765\u8ba1\u7b97\u51fa\u5f53\u524d\u7684\u706f\u73e0\u5c5e\u4e8e\u54ea\u4e2a595\u82af\u7247\uff0c\u5373\u5e94\u8be5\u4fee\u6539\u72b6\u6001\u6570\u7ec4\u4e2d\u7684\u54ea\u4e00\u4e2a\u6570\u503c\uff0c\u901a\u8fc7\u7d22\u5f15%8\u6765\u786e\u5b9a\u504f\u79fb\u4f4d\u6570\uff0c\u5373\u54ea\u4e2a\u706f\u73e0\u3002\u6700\u540e\u5c06\u6570\u636e\u4e00\u6b21\u53d1\u7ed9\u4e94\u4e2a595\u82af\u7247\uff0c\u5b9e\u73b0\u5bf9\u6240\u6709\u706f\u73e0\u7684\u63a7\u5236\u3002<\/p>\n
\u867d\u7136\u7406\u8bba\u4e0a\u8bb2\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u6269\u5c55\u51fa\u65e0\u9650\u4e2a\u706f\u73e0\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\u8fd8\u9700\u8981\u8003\u8651\u7535\u6e90\u548c\u529f\u8017\u7b49\u56e0\u7d20\u3002<\/p>\n
\u6700\u7ec8\u6548\u679c\u5982\u4e0b<\/p>\n
<\/div><\/p>\n
\u52a8\u6001\u8c03\u901fLED\u6d41\u6c34\u706f<\/h2>\n
\u5728\u6b64\u6280\u672f\u4e0a\u4f7f\u7528\u4e24\u4e2a\u6309\u94ae\u8fdb\u884c\u52a8\u6001\u8c03\u901f\uff0c\u6574\u4f53\u903b\u8f91\u5c31\u662f\u6dfb\u52a0\u4e24\u4e2a\u6309\u94ae\uff0c\u4e00\u4e2a\u52a0\u901f\uff0c\u4e00\u4e2a\u51cf\u901f\uff0c\u7528\u4e8e\u52a8\u6001\u7684\u8c03\u8282\u5f53\u524d\u7684\u70b9\u4eae\u5ef6\u65f6\uff0c\u901a\u8fc7\u4e00\u4e2a\u6bb5\u7801\u5c4f\u663e\u793a\u5f53\u524d\u7684\u5ef6\u65f6\u3002<\/p>\n
\u8fd9\u91cc\u6bb5\u7801\u5c4f\u4f7f\u7528TM1637\uff0c\u6dfb\u52a0\u5176\u5bf9\u5e94\u7684\u5e93\uff0c\u8fd9\u91cc\u4f7f\u7528TM1637Display\u70b9\u4eae\u4ed6\u3002VCC\u548cGND\u5206\u522b\u8fde\u63a53V3\u548cGND\uff0cCLK\u548cDIO\u8fde\u63a5\u5728\u4e24\u4e2aGPIO\u5f15\u811a\u4e0a\u5373\u53ef\u4f7f\u7528<\/p>\n
\u6309\u94ae\u9009\u62e9\u5e38\u89c4\u7684\u6309\u94ae\u5373\u53ef\uff0c\u4e00\u7aef\u63a5\u5730\uff0c\u4e00\u7aef\u63a5gpip\u5f15\u811a\uff0c\u4f46\u662f\u8fd9\u91cc\u7684\u5f15\u811a\u53ef\u4ee5\u9009\u62e9INPUT_PULLUP<\/code>\uff0c\u9ed8\u8ba4\u4e3a\u9ad8\u7535\u5e73\uff0c\u63a5\u5730\u5bfc\u901a\u540e\u53d8\u4e3a\u4f4e\u7535\u5e73\uff0c\u6240\u4ee5\u5bf9\u5e94\u5f15\u811a\u53d8\u4e3a\u4e86\u4f4e\u7535\u5e73\u5219\u8bf4\u660e\u5bf9\u5e94\u6309\u94ae\u6309\u4e0b\u3002<\/p>\n\u9664\u6b64\u4e4b\u5916\u4e5f\u53ef\u4ee5\u9009\u62e9INPUT\u6a21\u5f0f\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u81ea\u884c\u6dfb\u52a0\u989d\u5916\u7684\u4e0a\u62c9\u6216\u8005\u4e0b\u62c9\u7535\u8def\u3002\u4ee5\u4e0a\u62c9\u4e3a\u4f8b\uff0c \u6309\u94ae\u5728\u4e00\u6bb5\u8fde\u63a5gpio\uff0c\u4e00\u6bb5\u63a5\u5730\u7684\u57fa\u7840\u4e0a\uff0c\u5c063V3\u8fde\u63a5\u5230gpio\uff0c\u540c\u65f6\u8fde\u63a5\u4e00\u4e2a\u9ad8\u989d\u7535\u963b\u3002\u793a\u610f\u56fe\u5982\u4e0b\u3002
\n\u672a\u6309\u4e0b\u65f6:
\n\u7535\u6d41: 3.3V \u2192 10k\u03a9\u7535\u963b \u2192 GPIO
\nGPIO\u8bfb\u53d6: HIGH(3.3V)
\n\u6309\u4e0b\u65f6
\n\u7535\u6d41: GPIO \u2192 \u6309\u94ae \u2192 GND\uff08\u7531\u4e8e\u53e6\u4e00\u7aef\u7535\u963b\u8f83\u9ad8\uff0c\u7535\u6d41\u4f1a\u53bb\u7535\u963b\u4f4e\u7684\uff09
\nGPIO\u8bfb\u53d6: LOW(0V)<\/p>\n
3.3V ----[10k\u03a9]----+\n |\n +---- GPIO (INPUT)\n |\n [\u6309\u94ae]|\n |\n GND<\/code><\/pre>\n\u8fd9\u91cc\u5c31\u4ee5INPUT_PULLUP\u6a21\u5f0f\u4e3a\u4f8b\uff0c\u63a5\u7ebf\u5982\u4e0b<\/p>\n
<\/div><\/p>\n
\u4e3a\u4e86\u5b9e\u73b0\u5b9e\u65f6\u66f4\u65b0\u901f\u5ea6\uff0c\u8fd9\u91cc\u6709\u4e24\u70b9\u9700\u8981\u6ce8\u610f<\/p>\n
1. \u4e0d\u80fd\u518d\u4f7f\u7528\u963b\u585e\u5f0f\u7684delay\u6765\u63a7\u5236\u65f6\u95f4<\/strong><\/p>\n\u56e0\u4e3adelay\u4f1a\u963b\u585e\u6574\u4e2a\u4ee3\u7801\u903b\u8f91\uff0c\u6240\u4ee5\u4e5f\u4f1a\u5f71\u54cd\u6309\u94ae\u5bf9\u4e8e\u5ef6\u65f6\u7684\u66f4\u65b0\uff0c\u5728\u8bbe\u5b9a\u4e3a\u5ef6\u65f6\u5f88\u957f\u4e4b\u540e\u4f1a\u5bfc\u81f4\u5ef6\u65f6\u66f4\u65b0\u5468\u671f\u8f83\u957f\uff08\u56e0\u4e3a\u5728\u963b\u585e\u5462\uff09\uff0c\u4f53\u73b0\u5728\u786c\u4ef6\u4e0a\u5c31\u662f\u901f\u5ea6\u53d8\u66f4\u4e0d\u7075\u654f\uff0c\u8fd9\u91cc\u8981\u66f4\u6362\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n
\u8fd9\u91cc\u6539\u4e3a\u624b\u52a8\u8ba1\u7b97\u6267\u884c\u65f6\u95f4\uff0c\u5373\u5728\u5faa\u73af\u4f53\u4e2d\u5ef6\u65f6\u5904\u7406\u7684\u903b\u8f91\u6bcf\u6b21\u9996\u5148\u6267\u884c\uff0c\u540e\u9762\u901a\u8fc7\u6bd4\u8f83\u4ee3\u7801\u6267\u884c\u7684\u65f6\u95f4\u548c\u76ee\u524d\u7684\u6700\u65b0\u5ef6\u65f6\u8bbe\u5b9a\u51b3\u5b9a\u9700\u4e0d\u9700\u8981\u66f4\u65b0\u6d41\u6c34\u706f\u72b6\u6001\uff0c\u5373<\/p>\n
void loop() {\n static unsigned long previousMillis = 0; \/\/ \u4e0a\u6b21\u66f4\u65b0\u65f6\u95f4\n static int currentLed = 0; \/\/ \u5f53\u524dLED\u4f4d\u7f6e\n static bool direction = true; \/\/ true\u4e3a\u6b63\u5411\uff0cfalse\u4e3a\u53cd\u5411\n uint8_t ledData[NUM_REGISTERS] = {0}; \/\/ LED\u72b6\u6001\u6570\u7ec4\n\n \/\/ \u5904\u7406\u6309\u94ae\u8f93\u5165\u4ee5\u53ca\u5ef6\u65f6\u53d8\u66f4\n handleButtons();\n\n \/\/ \u68c0\u67e5\u662f\u5426\u5230\u8fbe\u66f4\u65b0\u65f6\u95f4\n unsigned long currentMillis = millis(); \/\/ \u5f53\u524d\u65f6\u95f4\n if (currentMillis - previousMillis >= DELAY_MS) {\n previousMillis = currentMillis;\n \/\/ \u66f4\u65b0led\u72b6\u6001\u76f8\u5173....\n }\n}<\/code><\/pre>\n2. \u9700\u8981\u8003\u8651\u6d88\u6296<\/strong><\/p>\n\u6309\u94ae\u7684\u6d88\u6296\uff0c\u5373\u6d88\u9664\u7531\u4e8e\u6309\u94ae\u88ab\u6309\u4e0b\u65f6\u4ea7\u751f\u7684\u673a\u68b0\u6296\u52a8\u5bf9\u6309\u94ae\u7684\u7ed3\u679c\u5224\u5b9a\u9020\u6210\u7684\u5f71\u54cd\u3002\u7531\u4e8e\u6309\u94ae\u88ab\u6309\u4e0b\u53ef\u80fd\u4f1a\u4ea7\u751f\u673a\u68b0\u6027\u6296\u52a8\uff0c\u5982\u679c\u4e0d\u505a\u5904\u7406\uff0c\u6309\u94ae\u53ef\u80fd\u4f1a\u88ab\u8bc6\u522b\u4e3a\u591a\u6b21\u6309\u4e0b\u3002\u5373<\/p>\n
\u7535\u538b\n ^\n3.3V| \/\\\/\\\/\\____\n |___\/\n +---------------> \u65f6\u95f4\n \u6309\u4e0b\u77ac\u95f4\u51fa\u73b0\u591a\u6b21\u8df3\u53d8<\/code><\/pre>\n\u8fd9\u65f6\u7684\u89e3\u51b3\u65b9\u6848\u4e00\u822c\u5206\u4e3a\u8f6f\u4ef6\u89e3\u51b3\u548c\u786c\u4ef6\u89e3\u51b3\u3002<\/p>\n
\u8f6f\u4ef6\u89e3\u51b3\u903b\u8f91\u8f83\u4e3a\u7b80\u5355\u7c97\u66b4\uff0c\u5373\u8bbe\u5b9a\u4e00\u4e2a\u5ef6\u65f6\uff0c\u7b49\u5f85\u6296\u52a8\u7ed3\u675f\u518d\u786e\u8ba4\u6309\u94ae\u72b6\u6001\u5373\u53ef\u3002\u5373<\/p>\n
void handleButtons() {\n static unsigned long lastDebounceTime = 0;\n const unsigned long debounceDelay = DEBOUNCEDELAY; \/\/ \u6d88\u6296\u5ef6\u65f6\n\n if ((millis() - lastDebounceTime) > debounceDelay) {\n if (digitalRead(speedUpPin) == LOW) { \/\/ \u8bfb\u53d6\u52a0\u901f\u9488\u811a\u72b6\u6001\n \/\/ \u52a0\u901f\u6309\u94ae\u6309\u4e0b...\n }\n if (digitalRead(speedDownPin) == LOW) { \/\/ \u8bfb\u53d6\u51cf\u901f\u6309\u94ae\u72b6\u6001\n \/\/ \u51cf\u901f\u6309\u94ae\u6309\u4e0b...\n }\n }\n}<\/code><\/pre>\n\u786c\u4ef6\u6d88\u6296\u6709\u591a\u79cd\u89e3\u51b3\u65b9\u6848\uff0c\u5e38\u89c1\u7684\u65b9\u6cd5\u6709\u901a\u8fc7RC\u6ee4\u6ce2\u6216\u901a\u8fc7\u65bd\u5bc6\u7279\u89e6\u53d1\u5668<\/p>\n
RC\u6ee4\u6ce2\u5373\u901a\u8fc7\u5728\u7535\u8def\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u7535\u5bb9\uff0c\u901a\u8fc7\u5bf9\u7535\u5bb9\u7684\u5145\u7535\u6765\u6d88\u9664\u77ed\u65f6\u95f4\u5185\u7684\u4fe1\u53f7\u6296\u52a8\uff0c\u540c\u65f6\u8fd9\u6837\u7684\u601d\u60f3\u8fd8\u88ab\u7528\u4e8e\u7535\u8def\u5ef6\u65f6\u3002\u793a\u610f\u56fe\u5982\u4e0b<\/p>\n
VCC(3.3V) ----[10k\u03a9]----+\n |\n +----[0.1\u00b5F]----GND\n |\n +---- GPIO\n |\n [\u6309\u94ae]|\n |\n GND<\/code><\/pre>\n\u6216\u8005\u662f\u53ccRC\u6ee4\u6ce2\uff0c\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u53ef\u4ee5\u8d77\u5230\u66f4\u597d\u7684\u6548\u679c<\/p>\n
VCC ----[R1]----+----[R2]----+----OUTPUT\n | |\n [C1] [C2]\n | |\n GND GND<\/code><\/pre>\n\u800c\u65bd\u5c3c\u7279\u89e6\u53d1\u5668\u5219\u53ef\u4ee5\u53ea\u6709\u5f53\u7535\u538b\u8d85\u8fc7\u9608\u503c\u7684\u65f6\u5019\uff0c\u624d\u6539\u53d8\u72b6\u6001\uff0c\u6296\u52a8\u5f15\u8d77\u7684\u8f83\u5c0f\u7535\u538b\u53d8\u5316\u5e76\u4e0d\u4f1a\u8ba9\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\u6539\u53d8\u72b6\u6001\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u6d88\u6296\u3002\u793a\u4f8b\u5982\u4e0b<\/p>\n
VCC(3.3V) ----[10k\u03a9]----+\n |\n [\u6309\u94ae]|\n +---- [74HC14] ---- GPIO\n | Pin1 Pin2\n [0.1\u00b5F]\n |\n GND<\/code><\/pre>\n\u8fd9\u91cc\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u4f7f\u7528\u8f6f\u4ef6\u6d88\u6296\uff0c\u6700\u7ec8\u5b8c\u6574\u7684\u903b\u8f91\u4ee3\u7801\u5982\u4e0b<\/p>\n
#include <TM1637Display.h>\n\n\/\/ \u5b9a\u4e49595\u4e32\u8054\u4f7f\u7528\u7684\u5f15\u811a\nconst int dataPin = 2; \/\/ DS(\u6570\u636e\u8f93\u5165)\nconst int latchPin = 0; \/\/ STCP(\u5b58\u50a8\u5bc4\u5b58\u5668\u65f6\u949f)\nconst int clockPin = 4; \/\/ SHCP(\u79fb\u4f4d\u5bc4\u5b58\u5668\u65f6\u949f)\n\n\/\/ \u5b9a\u4e49\u6570\u7801\u7ba1\u663e\u793a\u5668\u5f15\u811a\nconst int displayCLK = 18; \/\/ \u6570\u7801\u7ba1\u65f6\u949f\u5f15\u811a\nconst int displayDIO = 5; \/\/ \u6570\u7801\u7ba1\u6570\u636e\u5f15\u811a\n\n\/\/ \u5b9a\u4e49\u6309\u94ae\u5f15\u811a\nconst int speedUpPin = 16; \/\/ \u52a0\u901f\u6309\u94ae\nconst int speedDownPin = 17; \/\/ \u51cf\u901f\u6309\u94ae\n\nconst int NUM_REGISTERS = 6; \/\/ 595\u82af\u7247\u6570\u91cf\nconst int NUM_LEDS = NUM_REGISTERS * 8; \/\/ \u603bLED\u6570\nint DELAY_MS = 50; \/\/ \u6d41\u6c34\u706f\u79fb\u52a8\u95f4\u9694(\u73b0\u5728\u53ef\u8c03)\nconst int MIN_DELAY = 0; \/\/ \u6700\u5c0f\u5ef6\u8fdf\nconst int MAX_DELAY = 9999; \/\/ \u6700\u5927\u5ef6\u8fdf\n\nconst int STEP_ON = 10; \/\/ \u8c03\u8282\u6b65\u957f\nconst int DEBOUNCEDELAY = 50; \/\/ \u6d88\u6296\u5ef6\u65f6\uff0c\u653e\u7f6e\u6309\u94ae\u5728\u6309\u538b\u540e\u4ea7\u751f\u7684\u673a\u68b0\u6296\u52a8\u800c\u88ab\u9519\u8bef\u8bc6\u522b\u591a\u6b21\u6309\u538b\n\n\/\/ \u521b\u5efa\u6570\u7801\u7ba1\u663e\u793a\u5bf9\u8c61\nTM1637Display display(displayCLK, displayDIO);\n\nvoid setup() {\n\n \/\/ \u8bbe\u7f6e595\u63a7\u5236\u5f15\u811a\n pinMode(dataPin, OUTPUT);\n pinMode(clockPin, OUTPUT);\n pinMode(latchPin, OUTPUT);\n\n \/\/ \u8bbe\u7f6e\u6309\u94ae\u8f93\u5165\n pinMode(speedUpPin, INPUT_PULLUP);\n pinMode(speedDownPin, INPUT_PULLUP);\n\n \/\/ \u521d\u59cb\u5316\u6570\u7801\u7ba1\n display.setBrightness(0x0f);\n display.showNumberDec(DELAY_MS);\n}\n\n\/\/ \u5904\u7406\u6309\u94ae\u8f93\u5165\nvoid handleButtons() {\n static unsigned long lastDebounceTime = 0;\n const unsigned long debounceDelay = DEBOUNCEDELAY; \/\/ \u6d88\u6296\u5ef6\u65f6\n\n if ((millis() - lastDebounceTime) > debounceDelay) {\n if (digitalRead(speedUpPin) == LOW) { \/\/ \u52a0\u901f\n DELAY_MS = max(MIN_DELAY, DELAY_MS - STEP_ON);\n display.showNumberDec(DELAY_MS);\n lastDebounceTime = millis();\n }\n if (digitalRead(speedDownPin) == LOW) { \/\/ \u51cf\u901f\n DELAY_MS = min(MAX_DELAY, DELAY_MS + STEP_ON);\n display.showNumberDec(DELAY_MS);\n lastDebounceTime = millis();\n }\n }\n}\n\n\/\/ \u5411595\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u6570\u636e\nvoid shiftOut(uint8_t data) {\n Serial.print("\u53d1\u9001\u6570\u636e: ");\n \/\/ \u4ece\u6700\u9ad8\u4f4d(MSB)\u5f00\u59cb\u53d1\u9001\n for(int i = 7; i >= 0; i--) {\n digitalWrite(clockPin, LOW); \/\/ \u65f6\u949f\u4f4e\u7535\u5e73\n\n \/\/ \u83b7\u53d6\u5f53\u524d\u4f4d\u7684\u503c\u5e76\u6253\u5370\n uint8_t bitValue = (data >> i) & 0x01;\n Serial.print(bitValue);\n\n digitalWrite(dataPin, bitValue); \/\/ \u8bbe\u7f6e\u6570\u636e\u4f4d\n digitalWrite(clockPin, HIGH); \/\/ \u65f6\u949f\u4e0a\u5347\u6cbf\uff0c\u6570\u636e\u88ab\u79fb\u5165\n }\n Serial.println(); \/\/ \u6362\u884c\n}\n\n\/\/ \u5411\u591a\u7247\u7ea7\u8054\u7684595\u53d1\u9001\u6570\u636e\nvoid shiftMultiBytes(uint8_t* data, int numBytes) {\n digitalWrite(latchPin, LOW); \/\/ \u51c6\u5907\u6570\u636e\u4f20\u8f93\n\n \/\/ \u4ece\u6700\u540e\u4e00\u7247595\u5f00\u59cb\u53d1\u9001\n for(int i = numBytes-1; i >= 0; i--) {\n Serial.printf("595\u82af\u7247[%d]: ", i);\n shiftOut(data[i]);\n }\n\n digitalWrite(latchPin, HIGH); \/\/ \u6570\u636e\u9501\u5b58\u8f93\u51fa\n}\n\nvoid loop() {\n static unsigned long previousMillis = 0; \/\/ \u4e0a\u6b21\u66f4\u65b0\u65f6\u95f4\n static int currentLed = 0; \/\/ \u5f53\u524dLED\u4f4d\u7f6e\n static bool direction = true; \/\/ true\u4e3a\u6b63\u5411\uff0cfalse\u4e3a\u53cd\u5411\n uint8_t ledData[NUM_REGISTERS] = {0}; \/\/ LED\u72b6\u6001\u6570\u7ec4\n\n \/\/ \u5904\u7406\u6309\u94ae\u8f93\u5165\n handleButtons();\n\n \/\/ \u68c0\u67e5\u662f\u5426\u5230\u8fbe\u66f4\u65b0\u65f6\u95f4\n unsigned long currentMillis = millis();\n if (currentMillis - previousMillis >= DELAY_MS) {\n previousMillis = currentMillis;\n\n \/\/ \u6e05\u7a7a\u6240\u6709LED\n memset(ledData, 0, NUM_REGISTERS);\n\n \/\/ \u8bbe\u7f6e\u5f53\u524dLED\n ledData[currentLed \/ 8] = (1 << (currentLed % 8));\n shiftMultiBytes(ledData, NUM_REGISTERS);\n\n \/\/ \u66f4\u65b0LED\u4f4d\u7f6e\n if (direction) {\n currentLed++;\n if (currentLed >= NUM_LEDS) {\n currentLed = NUM_LEDS - 1;\n direction = false;\n }\n } else {\n currentLed--;\n if (currentLed < 0) {\n currentLed = 0;\n direction = true;\n }\n }\n }\n}<\/code><\/pre>\n\u6700\u7ec8\u6548\u679c\u5982\u4e0b<\/p>\n
<\/div><\/p>\n
\u8054\u7f51\u5929\u6c14\u9884\u62a5<\/h2>\n
\u53d1\u5c55\u5230\u8fd9\u91cc\uff0c\u5176\u5b9e\u5df2\u7ecf\u548cled\u706f\u73e0\u6ca1\u5173\u7cfb\u4e86\uff0c\u4f46\u662f\u8f9b\u8f9b\u82e6\u82e6\u642d\u7684\uff0c\u603b\u4e0d\u80fd\u5220\u6389\uff0c\u7559\u7740\u968f\u4fbf\u663e\u793a\u4e86\u4e2a\u6e29\u5ea6\u7684\u767e\u5206\u6bd4\u3002\u6574\u4f53\u6765\u8bf4\u4f9d\u65e7\u975e\u5e38\u7b80\u5355\u3002<\/p>\n
\u83b7\u53d6\u4f20\u611f\u5668\u7684\u503c<\/h3>\n
\u8fd9\u91cc\u4f7f\u7528\u4eff\u771f\u5e73\u53f0\u4e2d\u7684\u865a\u62df\u4f20\u611f\u5668DHT22\u83b7\u53d6\u6e29\u5ea6\u548c\u6e7f\u5ea6\uff0c\u4f7f\u7528\u7684\u662fIIC\u534f\u8bae\u3002<\/p>\n
\u8fd9\u91cc\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u4f7f\u7528DHTesp\u5e93\u83b7\u53d6\u6e29\u5ea6\u548c\u6e7f\u5ea6<\/p>\n
DHTesp dhtSensor;\ndhtSensor.setup(DHT_PIN, DHTesp::DHT22);\n\nTempAndHumidity data = dhtSensor.getTempAndHumidity();<\/code><\/pre>\n\u58a8\u6c34\u5c4f\u663e\u793a\u6280\u672f\u8be6\u89e3<\/h3>\n
\u8fd9\u91cc\u4f7f\u7528\u7684\u662f\u57fa\u4e8eSPI\u901a\u4fe1\u76842.9\u5bf8\u58a8\u6c34\u5c4f\uff0c\u5206\u8fa8\u7387296\u00d7128\u3002\u4f7f\u7528\u4e86\u4ee5\u4e0b\u5173\u952e\u5e93\uff1a<\/p>\n
\n- GxEPD\uff1a\u58a8\u6c34\u5c4f\u9a71\u52a8\u57fa\u7840\u5e93<\/li>\n
- U8g2_for_Adafruit_GFX\uff1a\u7528\u4e8e\u663e\u793a\u4e2d\u6587\u5b57\u4f53<\/li>\n
- Adafruit_GFX\uff1a\u56fe\u5f62\u5e93\u57fa\u7840\u7c7b<\/li>\n<\/ol>\n
\u663e\u793a\u7cfb\u7edf\u521d\u59cb\u5316\u8fc7\u7a0b\uff1a<\/p>\n
\/\/ 1. SPI\u914d\u7f6e\nSPI.begin(CLK_PIN, -1, DIN_PIN); \/\/ SCLK, MISO(\u672a\u7528), MOSI\n\n\/\/ 2. \u663e\u793a\u9a71\u52a8\u521d\u59cb\u5316\nGxIO_Class io(SPI, CS_PIN, DC_PIN, RST_PIN); \nGxEPD_Class display(io, RST_PIN, BUSY_PIN);\ndisplay.init(115200); \/\/ \u6ce2\u7279\u7387\u5f71\u54cd\u5237\u65b0\u901f\u5ea6\n\n\/\/ 3. \u4e2d\u6587\u5b57\u4f53\u7cfb\u7edf\u521d\u59cb\u5316\nU8G2_FOR_ADAFRUIT_GFX u8g2Fonts;\nu8g2Fonts.begin(display);\nu8g2Fonts.setFont(u8g2_font_wqy16_t_gb2312a); \/\/ \u6587\u6cc9\u9a7f16\u50cf\u7d20\u4e2d\u6587\u5b57\u4f53<\/code><\/pre>\n\u663e\u793a\u5750\u6807\u7cfb\u7edf\u8bf4\u660e\uff1a<\/p>\n
(0,0) \u2192\u2192\u2192\u2192\u2192 X\u8f74 (296)\n \u2193\n \u2193 ------------------\n \u2193 | \u5c4f\u5e55 |\n \u2193 ------------------\n Y\u8f74\n(128)<\/code><\/pre>\n\u663e\u793a\u51fd\u6570\u8be6\u89e3\uff1a<\/p>\n
\/\/ \u5c4f\u5e55\u65b9\u5411\u8bbe\u7f6e (0-3)\ndisplay.setRotation(1); \/\/ 1=\u6a2a\u5411\uff0c\u663e\u793a\u65b9\u5411\u987a\u65f6\u9488\u65cb\u8f6c90\u00b0\n\n\/\/ \u6e05\u5c4f\u64cd\u4f5c\ndisplay.fillScreen(GxEPD_WHITE); \/\/ \u6574\u5c4f\u586b\u5145\u767d\u8272\ndisplay.fillRect(x, y, w, h, color); \/\/ \u5c40\u90e8\u586b\u5145\n\n\/\/ \u6587\u672c\u663e\u793a\nu8g2Fonts.setCursor(x, y); \/\/ \u8bbe\u7f6e\u8d77\u59cb\u5750\u6807\nu8g2Fonts.setForegroundColor(GxEPD_BLACK); \/\/ \u6587\u5b57\u989c\u8272\nu8g2Fonts.setBackgroundColor(GxEPD_WHITE); \/\/ \u80cc\u666f\u8272\nu8g2Fonts.printf("\u663e\u793a\u5185\u5bb9"); \/\/ \u652f\u6301\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\n\n\/\/ \u56fe\u5f62\u663e\u793a\ndisplay.drawBitmap(x, y, bitmap_data, w, h, color); \/\/ \u4f4d\u56fe\u663e\u793a<\/code><\/pre>\n\u7f51\u7edc\u901a\u4fe1\u8be6\u89e3<\/h3>\n
\u8fd9\u91cc\u4f7f\u7528\u63a5\u53e3https:\/\/goweather.herokuapp.com\/weather\/Shanghai \u83b7\u53d6\u7b80\u6613\u7684\u5929\u6c14\u9884\u62a5\u6570\u636e\u3002<\/p>\n
ESP32 WiFi\u8fde\u63a5\u8fc7\u7a0b\uff1a<\/p>\n
WiFi.begin(ssid, password);\n\/\/ \u7b49\u5f85\u8fde\u63a5\u5b8c\u6210\nwhile (WiFi.status() != WL_CONNECTED) {\n delay(500);\n Serial.print(".");\n}<\/code><\/pre>\nHTTP\u8bf7\u6c42\u5b9e\u73b0\uff1a<\/p>\n
bool getWeatherData() {\n HTTPClient http;\n http.begin(weatherUrl); \/\/ \u8bbe\u7f6e\u76ee\u6807URL\n\n int httpCode = http.GET(); \/\/ \u53d1\u9001GET\u8bf7\u6c42\n if (httpCode == HTTP_CODE_OK) {\n String payload = http.getString(); \/\/ \u83b7\u53d6\u54cd\u5e94\u5185\u5bb9\n\n \/\/ ArduinoJson\u89e3\u6790\n StaticJsonDocument<1024> doc; \/\/ \u5206\u914dJSON\u89e3\u6790\u7f13\u51b2\u533a\n DeserializationError error = deserializeJson(doc, payload);\n\n if (!error) {\n \/\/ \u89e3\u6790\u6570\u636e...\n return true;\n }\n }\n http.end(); \/\/ \u91ca\u653e\u8d44\u6e90\n return false;\n}<\/code><\/pre>\n\u6700\u7ec8\u6548\u679c<\/h3>\n
\u8fd9\u91cc\u662f\u5b8c\u6574\u7684\u4ee3\u7801\u5b9e\u73b0<\/p>\n
#include "DHTesp.h"\n\n#include <GxEPD.h>\n#include <GxGDEM029T94\/GxGDEM029T94.h> \n#include <GxIO\/GxIO_SPI\/GxIO_SPI.h>\n#include <GxIO\/GxIO.h> \n#include <SPI.h>\n#include <Fonts\/FreeMonoBold9pt7b.h>\n#include <Fonts\/FreeMonoBold12pt7b.h>\n#include <U8g2_for_Adafruit_GFX.h>\n#include <WiFi.h>\n#include <HTTPClient.h>\n#include <ArduinoJson.h>\n\n\/\/ \u786c\u4ef6\u5f15\u811a\u5b9a\u4e49\n\/\/ 74HC595\u7ea7\u8054\u63a7\u5236\u5f15\u811a\nconst int dataPin = 2; \/\/ \u4e32\u884c\u6570\u636e\u8f93\u5165\nconst int latchPin = 0; \/\/ \u5b58\u50a8\u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u7528\u4e8e\u6570\u636e\u9501\u5b58\nconst int clockPin = 4; \/\/ \u79fb\u4f4d\u5bc4\u5b58\u5668\u65f6\u949f\uff0c\u63a7\u5236\u6570\u636e\u79fb\u4f4d\n\n\/\/ E-Paper\u663e\u793a\u5c4fSPI\u63a5\u53e3\u5f15\u811a\nconst int DIN_PIN = 23; \/\/ MOSI\u5f15\u811a\nconst int CLK_PIN = 22; \/\/ SCK\u5f15\u811a\nconst int CS_PIN = 5; \/\/ \u7247\u9009\u4fe1\u53f7\nconst int DC_PIN = 19; \/\/ \u6570\u636e\/\u547d\u4ee4\u63a7\u5236\nconst int RST_PIN = 18; \/\/ \u590d\u4f4d\u4fe1\u53f7\nconst int BUSY_PIN = 21; \/\/ \u5fd9\u72b6\u6001\u6307\u793a\n\n\/\/ DHT22\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u5f15\u811a\nconst int DHT_PIN = 25; \/\/ \u5355\u603b\u7ebf\u6570\u636e\u5f15\u811a\n\n\/\/ LED\u63a7\u5236\u76f8\u5173\u5e38\u91cf\nconst int NUM_REGISTERS = 6; \/\/ 74HC595\u82af\u7247\u6570\u91cf\nconst int NUM_LEDS = NUM_REGISTERS * 8; \/\/ LED\u603b\u6570\uff08\u6bcf\u4e2a595\u63a7\u52368\u4e2aLED\uff09\n\n\/\/ \u5b9a\u65f6\u5668\u95f4\u9694\u8bbe\u7f6e\nconst unsigned long DISPLAY_REFRESH_INTERVAL = 5000; \/\/ \u663e\u793a\u5237\u65b0\u95f4\u9694(ms)\nconst unsigned long WEATHER_UPDATE_INTERVAL = 1800000; \/\/ \u5929\u6c14\u66f4\u65b0\u95f4\u9694(30\u5206\u949f)\n\n\/\/ WiFi\u914d\u7f6e\nconst char* ssid = "Wokwi-GUEST";\nconst char* password = "";\nconst char* weatherUrl = "https:\/\/goweather.herokuapp.com\/weather\/Shanghai";\n\n\/\/ \u5929\u6c14\u6570\u636e\u7ed3\u6784\u5b9a\u4e49\nstruct WeatherData {\n String temperature; \/\/ \u5f53\u524d\u6e29\u5ea6\n String wind; \/\/ \u98ce\u901f\n String description; \/\/ \u5929\u6c14\u63cf\u8ff0\n String forecast[3][2]; \/\/ \u672a\u67653\u5929\u9884\u62a5[\u5929\u6570][\u6e29\u5ea6,\u98ce\u901f]\n};\n\nWeatherData currentWeather;\n\n\/\/ \u5929\u6c14\u56fe\u6807\u5b9a\u4e49 (32x32\u4f4d\u56fe)\nconst unsigned char icon_sunny[] PROGMEM = {\n 0x00, 0x01, 0x80, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00,\n 0x06, 0x03, 0xc0, 0x60, 0x0f, 0x07, 0xe0, 0xf0, 0x0f, 0x9f, 0xf9, 0xf0, 0x07, 0xfc, 0x3f, 0xe0,\n 0x03, 0xe0, 0x07, 0xc0, 0x01, 0xc7, 0xe3, 0x80, 0x01, 0x8f, 0xf1, 0x80, 0x03, 0x1f, 0xfc, 0xc0,\n 0x03, 0x3f, 0xfc, 0xc0, 0x07, 0x7f, 0xfe, 0xe0, 0x7e, 0x7f, 0xfe, 0x7e, 0xfe, 0x7f, 0xfe, 0x7f,\n 0xfe, 0x7f, 0xfe, 0x7f, 0x7e, 0x7f, 0xfe, 0x7e, 0x07, 0x7f, 0xfe, 0xe0, 0x03, 0x3f, 0xfc, 0xc0,\n 0x03, 0x1f, 0xfc, 0xc0, 0x01, 0x8f, 0xf1, 0x80, 0x01, 0xc7, 0xe3, 0x80, 0x03, 0xe0, 0x07, 0xc0,\n 0x07, 0xf8, 0x1f, 0xe0, 0x0f, 0x9f, 0xf9, 0xf0, 0x0f, 0x07, 0xe0, 0xf0, 0x06, 0x03, 0xc0, 0x60,\n 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x01, 0x80, 0x00\n};\n\nconst unsigned char icon_cloudy[] PROGMEM = {\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xfc, 0x00, 0x00, 0x07, 0xfe, 0x00,\n 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x7e, 0x3f, 0x00, 0x01, 0xff, 0x9f, 0x80,\n 0x03, 0xff, 0x8f, 0xf8, 0x03, 0xff, 0xcf, 0xfe, 0x07, 0xff, 0xe7, 0xfe, 0x0f, 0xff, 0xe0, 0x7f,\n 0x3f, 0xff, 0xe0, 0x1f, 0x7f, 0xff, 0xff, 0x9f, 0x7f, 0xff, 0xff, 0xce, 0xff, 0xff, 0xff, 0xce,\n 0xff, 0xff, 0xff, 0xe0, 0xff, 0xff, 0xff, 0xe0, 0xff, 0xff, 0xff, 0xe0, 0xff, 0xff, 0xff, 0xe0,\n 0x7f, 0xff, 0xff, 0xc0, 0x3f, 0xff, 0xff, 0x80, 0x0f, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00\n};\n\nDHTesp dhtSensor;\n\nGxIO_Class io(SPI, \/*CS=D8*\/ CS_PIN, \/*DC=D3*\/ DC_PIN, \/*RST=D4*\/ RST_PIN); \/\/ arbitrary selection of D3(=0), D4(=2), selected for default of GxEPD_Class\nGxEPD_Class display(io, \/*RST=D4*\/ RST_PIN, \/*BUSY=D2*\/ BUSY_PIN); \/\/ default selection of D4(=2), D2(=4)\n\nU8G2_FOR_ADAFRUIT_GFX u8g2Fonts;\n\n\/\/ \u786c\u4ef6\u521d\u59cb\u5316\u548c\u914d\u7f6e\nvoid setup() {\n Serial.begin(115200);\n \/\/ \u8bbe\u7f6e595\u63a7\u5236\u5f15\u811a\n pinMode(dataPin, OUTPUT);\n pinMode(clockPin, OUTPUT);\n pinMode(latchPin, OUTPUT);\n\n \/\/ \u8bbe\u7f6eDHT22\n dhtSensor.setup(DHT_PIN, DHTesp::DHT22);\n\n SPI.begin(CLK_PIN, -1, DIN_PIN);\n\n display.init(115200); \/\/ enable diagnostic output on Serial\n\n u8g2Fonts.begin(display); \/\/ \u5c06u8g2\u8fc7\u7a0b\u8fde\u63a5\u5230Adafruit GFX\n \/\/u8g2Fonts.setFontMode(1); \/\/ \u4f7f\u7528u8g2\u900f\u660e\u6a21\u5f0f\uff08\u8fd9\u662f\u9ed8\u8ba4\u8bbe\u7f6e\uff09\n u8g2Fonts.setFontDirection(0); \n u8g2Fonts.setForegroundColor(GxEPD_BLACK); \/\/ \u8bbe\u7f6e\u524d\u666f\u8272\n u8g2Fonts.setBackgroundColor(GxEPD_WHITE); \/\/ \u8bbe\u7f6e\u80cc\u666f\u8272\n \/\/u8g2Fonts.setFont(chinese_gb2312);\n\n display.setTextColor(GxEPD_BLACK);\n u8g2Fonts.setFont(u8g2_font_wqy16_t_gb2312a); \/\/ select u8g2 font from here: https:\/\/github.com\/olikraus\/u8g2\/wiki\/fntlistall\n\n \/\/ \u521d\u59cb\u5316WiFi\n WiFi.begin(ssid, password);\n while (WiFi.status() != WL_CONNECTED) {\n delay(500);\n Serial.print(".");\n }\n Serial.println("\\nWiFi connected");\n\n \/\/ \u83b7\u53d6\u521d\u59cb\u5929\u6c14\u6570\u636e\n getWeatherData();\n}\n\n\/\/ 74HC595\u6570\u636e\u53d1\u9001\u51fd\u6570\nvoid shiftOut(uint8_t data) {\n \/\/ \u6309\u4f4d\u53d1\u90018\u4f4d\u6570\u636e\uff08MSB\u4f18\u5148\uff09\n for(int i = 7; i >= 0; i--) {\n digitalWrite(clockPin, LOW);\n digitalWrite(dataPin, (data >> i) & 0x01);\n digitalWrite(clockPin, HIGH); \/\/ \u4e0a\u5347\u6cbf\u9501\u5b58\u6570\u636e\n }\n}\n\n\/\/ \u5411\u591a\u4e2a595\u53d1\u9001\u6570\u636e\nvoid shiftMultiBytes(uint8_t* data, int numBytes) {\n digitalWrite(latchPin, LOW); \/\/ \u51c6\u5907\u6570\u636e\u4f20\u8f93\n\n \/\/ \u4ece\u6700\u540e\u4e00\u7247595\u5f00\u59cb\u53d1\u9001\uff08\u7ea7\u8054\u6570\u636e\u6d41\u5411\uff09\n for(int i = numBytes-1; i >= 0; i--) {\n shiftOut(data[i]);\n }\n\n digitalWrite(latchPin, HIGH); \/\/ \u8f93\u51fa\u9501\u5b58\n}\n\n\/\/ LED\u663e\u793a\u63a7\u5236\u51fd\u6570\nvoid lightupLed(float num) {\n \/\/ num: 0-1\u4e4b\u95f4\u7684\u6bd4\u4f8b\u503c\uff0c\u63a7\u5236\u70b9\u4eae\u7684LED\u6570\u91cf\n if (num > 1) num = 1;\n if (num < 0) num = 0;\n\n int ledNum = (int)(NUM_LEDS * num);\n uint8_t ledData[NUM_REGISTERS] = {0};\n\n \/\/ \u8ba1\u7b97\u5b8c\u5168\u70b9\u4eae\u7684595\u6570\u91cf\n int fullICs = ledNum \/ 8;\n int remainingLEDs = ledNum % 8;\n\n \/\/ \u8bbe\u7f6e\u5b8c\u5168\u70b9\u4eae\u7684\u82af\u7247\n for(int i = 0; i < fullICs; i++) {\n ledData[i] = 0xFF;\n }\n\n \/\/ \u5904\u7406\u90e8\u5206\u70b9\u4eae\u7684\u6700\u540e\u4e00\u4e2a\u82af\u7247\n if (remainingLEDs > 0 && fullICs < NUM_REGISTERS) {\n ledData[fullICs] = (1 << remainingLEDs) - 1;\n }\n\n shiftMultiBytes(ledData, NUM_REGISTERS);\n}\n\n\/\/ \u6e29\u5ea6\u6620\u5c04\u51fd\u6570\uff1a\u5c06\u6e29\u5ea6(-40\u523080\u00b0C)\u6620\u5c04\u52300-1\u8303\u56f4\nfloat mapTemperature(float temp) {\n const float MIN_TEMP = -40.0;\n const float MAX_TEMP = 80.0;\n float percentage = (temp - MIN_TEMP) \/ (MAX_TEMP - MIN_TEMP);\n return constrain(percentage, 0, 1);\n}\n\n\/\/ HTTP\u83b7\u53d6\u5929\u6c14\u6570\u636e\nbool getWeatherData() {\n if (WiFi.status() == WL_CONNECTED) {\n HTTPClient http;\n http.begin(weatherUrl);\n\n int httpCode = http.GET();\n if (httpCode == HTTP_CODE_OK) {\n String payload = http.getString();\n\n \/\/ \u4f7f\u7528ArduinoJson\u89e3\u6790\u6570\u636e\n StaticJsonDocument<1024> doc;\n DeserializationError error = deserializeJson(doc, payload);\n\n if (!error) {\n currentWeather.temperature = doc["temperature"].as<String>();\n currentWeather.wind = doc["wind"].as<String>();\n currentWeather.description = doc["description"].as<String>();\n\n \/\/ \u83b7\u53d6\u9884\u62a5\u6570\u636e\n for(int i = 0; i < 3; i++) {\n currentWeather.forecast[i][0] = doc["forecast"][i]["temperature"].as<String>();\n currentWeather.forecast[i][1] = doc["forecast"][i]["wind"].as<String>();\n }\n\n return true;\n }\n }\n http.end();\n }\n return false;\n}\n\n\/\/ \u7ed8\u5236\u5929\u6c14\u56fe\u6807\nvoid drawWeatherIcon(const String& description, int x, int y) {\n const unsigned char* icon = icon_sunny; \/\/ \u9ed8\u8ba4\u6674\u5929\u56fe\u6807\n\n \/\/ \u6839\u636e\u63cf\u8ff0\u9009\u62e9\u56fe\u6807\n if (description.indexOf("Clear") >= 0) {\n icon = icon_sunny;\n } else if (description.indexOf("Cloud") >= 0) {\n icon = icon_cloudy;\n }\n\n display.drawBitmap(x, y, icon, 32, 32, GxEPD_BLACK);\n}\n\n\/\/ \u4e3b\u5faa\u73af\nvoid loop() {\n unsigned long currentMillis = millis();\n static unsigned long lastWeatherUpdate = 0;\n static unsigned long lastDisplayRefresh = 0;\n\n \/\/ 1. \u83b7\u53d6\u5e76\u663e\u793a\u6e29\u6e7f\u5ea6\u6570\u636e\n TempAndHumidity data = dhtSensor.getTempAndHumidity();\n float tempPercentage = mapTemperature(data.temperature);\n lightupLed(tempPercentage); \/\/ LED\u663e\u793a\u6e29\u5ea6\u6bd4\u4f8b\n\n \/\/ 2. \u5b9a\u671f\u66f4\u65b0\u5929\u6c14\u6570\u636e\n if (currentMillis - lastWeatherUpdate >= WEATHER_UPDATE_INTERVAL) {\n if (getWeatherData()) {\n lastWeatherUpdate = currentMillis;\n }\n }\n\n \/\/ 3. \u5b9a\u671f\u66f4\u65b0\u663e\u793a\u5c4f\n if (currentMillis - lastDisplayRefresh >= DISPLAY_REFRESH_INTERVAL) {\n lastDisplayRefresh = currentMillis;\n\n \/\/ \u663e\u793a\u5e03\u5c40\u66f4\u65b0\n display.setRotation(1);\n display.fillScreen(GxEPD_WHITE);\n\n \/\/ 3.1 \u663e\u793a\u5ba4\u5185\u73af\u5883\u6570\u636e\n u8g2Fonts.setCursor(0, 20);\n u8g2Fonts.printf("\u5ba4\u5185: %.1f\u00b0C %.1f%%", \n data.temperature,\n data.humidity);\n\n \/\/ 3.2 \u663e\u793a\u5ba4\u5916\u5929\u6c14\u6570\u636e\n u8g2Fonts.setCursor(0, 45);\n u8g2Fonts.printf("\u5ba4\u5916: %s %s", \n currentWeather.temperature.c_str(),\n currentWeather.wind.c_str());\n\n \/\/ 3.3 \u663e\u793a\u5929\u6c14\u56fe\u6807\n drawWeatherIcon(currentWeather.description, 200, 15);\n\n \/\/ 3.4 \u663e\u793a\u5929\u6c14\u9884\u62a5\n u8g2Fonts.setCursor(0, 75);\n for(int i = 0; i < 3; i++) {\n u8g2Fonts.printf("%d\u5929\u540e: %s %s\\n", \n i+1,\n currentWeather.forecast[i][0].c_str(),\n currentWeather.forecast[i][1].c_str());\n }\n\n display.update(); \/\/ \u66f4\u65b0\u663e\u793a\u5185\u5bb9\n }\n\n delay(50); \/\/ \u9002\u5f53\u5ef6\u65f6\uff0c\u907f\u514dCPU\u5360\u7528\u8fc7\u9ad8\n}<\/code><\/pre>\n\u6700\u7ec8\u6548\u679c\u5982\u4e0b\uff0c\u901a\u8fc7wifi\u8054\u7f51\u83b7\u53d6\u7b80\u6613\u5929\u6c14\u9884\u62a5\u6570\u636e\uff0c\u5e76\u7ed3\u5408\u6e29\u5ea6\u6e7f\u5ea6\u4f20\u611f\u5668\u7684\u6570\u503c\uff0c\u663e\u793a\u57282.9\u82f1\u5bf8\u58a8\u6c34\u5c4f\u4e0a\uff0c\u5e76\u663e\u793a\u4e00\u4e2a\u56fe\u6807\u4f53\u73b0\u73b0\u5728\u7684\u5929\u6c14\u72b6\u6001\u3002\u6e29\u5ea6\u7684\u6bd4\u4f8b\u4f53\u73b0\u5728led\u706f\u73e0\u4e0a\u3002<\/p>\n
<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"
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