ESP8266 DHT11 传感器数据上传至OneNet并控制舵机

#include <DHT.h> #include <ESP8266WiFi.h> #include <WiFiClientSecure.h> #include <Servo.h>

#define DHTPIN 4 // 设置传感器引脚 #define DHTTYPE DHT11 // 选择传感器类型

DHT dht(DHTPIN, DHTTYPE);

const char* ssid = 'HONOR Play4T'; // 替换为您的Wi-Fi网络名称 const char* password = '12345678'; // 替换为您的Wi-Fi密码

const char* host = 'api.heclouds.com'; // 替换为您云平台的主机地址

// OneNet平台的API参数 const char* apiKey = 'IiJSs17atNND2C77wumz03w63hw='; // 替换为您的API Key const char* deviceId = '1099655073'; // 替换为您的设备ID

WiFiClientSecure client; Servo servo;

void setup() { Serial.begin(9600); dht.begin(); connectToWiFi(); servo.attach(5); // 将舵机连接到GPIO 5 }

void loop() { float humidity = dht.readHumidity(); float temperature = dht.readTemperature();

if (!isnan(humidity) && !isnan(temperature)) { uploadDataToCloud(humidity, temperature); }

delay(2000); // 延迟2秒

float lightValue = getLightValueFromCloud();

if (!isnan(lightValue)) { controlServo(lightValue); } }

void connectToWiFi() { Serial.print('Connecting to Wi-Fi...'); WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print('.'); }

Serial.println(' Connected to Wi-Fi'); }

void uploadDataToCloud(float humidity, float temperature) { String payload = '{'humidity':{'value':' + String(humidity) + '},'temperature':{'value':' + String(temperature) + '}}';

Serial.print('Connecting to cloud platform...');

if (client.connect(host, 443)) { client.println('POST /devices/' + String(deviceId) + '/datapoints HTTP/1.1'); client.println('Host: ' + String(host)); client.println('Content-Type: application/json'); client.println('Content-Length: ' + String(payload.length())); client.println(); client.println(payload); client.println();

Serial.println('Data uploaded to cloud platform');

} else { Serial.println('Failed to connect to cloud platform'); }

delay(500); }

float getLightValueFromCloud() { float lightValue;

Serial.print('Connecting to cloud platform...');

if (client.connect(host, 443)) { client.print('GET /devices/' + String(deviceId) + '/light_value/latest HTTP/1.1 ' + 'Host: ' + String(host) + ' ' + 'Api-Key: ' + String(apiKey) + ' ' + 'Connection: close

');

while (client.connected()) {
  String line = client.readStringUntil('

'); if (line.startsWith(''value':')) { lightValue = line.substring(9).toFloat(); break; } }

Serial.print('Light value from cloud platform: ');
Serial.println(lightValue);

} else { Serial.println('Failed to connect to cloud platform'); }

return lightValue; }

void controlServo(float lightValue) { int angle = map(lightValue, 0, 100, 0, 180); // 将light值映射到0-180度舵机角度 servo.write(angle); // 控制舵机角度