参照：https://blog.zeruns.tech/archives/530.html 这位大佬提供了SHTC3检测数据。手头只有dht11，于是做了些许修改。对应硬件
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程序源码：
#include <ESP8266WiFi.h>/* 依赖 PubSubClient 2.4.0 */#include <PubSubClient.h>/* 依赖 ArduinoJson 5.13.4 */#include <ArduinoJson.h>#include <SparkFun_SHTC3.h>#include <DHT.h> //调用DHT库/* 连接您的WIFI SSID和密码 */#define WIFI_SSID "ＷＩＦＩ名称"#define WIFI_PASSWD "ＷＩＦＩ密码"/* 设备的三元组信息*/#define PRODUCT_KEY "阿里云设备ｋｅｙ"#define DEVICE_NAME "阿里云设备名，自己定义的"#define DEVICE_SECRET"阿里云提供"#define REGION_ID "cn-shanghai"/* 线上环境域名和端口号，不需要改 */#define MQTT_SERVER PRODUCT_KEY ".iot-as-mqtt." REGION_ID "."#define MQTT_PORT 1883#define MQTT_USRNAMEDEVICE_NAME "&" PRODUCT_KEY#define CLIENT_ID "dht11|securemode=3,timestamp=1234567890,signmethod=hmacsha1|"// 算法工具: http://iot-face.oss-cn-/tools.htm 进行加密生成password// password教程 /cloud-dev/iot-tech/mebm5g#define MQTT_PASSWD "阿里云系统生成，参考大佬"#define ALINK_BODY_FORMAT "{\"id\":\"dht11\",\"version\":\"1.0\",\"method\":\"thing.event.property.post\",\"params\":%s}"#define ALINK_TOPIC_PROP_POST"/sys/" PRODUCT_KEY "/" DEVICE_NAME "/thing/event/property/post"unsigned long lastMs = 0;float RH,T,RH_sum,T_sum;unsigned char count=0;WiFiClient espClient;PubSubClient client(espClient);//SHTC3 mySHTC3;DHT dht(D1,DHT11);//设置Data引脚所接IO口和传感器类型void callback(char *topic, byte *payload, unsigned int length){Serial.print("Message arrived [");Serial.print(topic);Serial.print("] ");payload[length] = '\0';Serial.println((char *)payload);}void wifiInit(){WiFi.mode(WIFI_STA);WiFi.begin(WIFI_SSID, WIFI_PASSWD); //连接WiFiwhile (WiFi.status() != WL_CONNECTED){delay(1000);Serial.println("WiFi not Connect");}Serial.println("Connected to AP");Serial.println("IP address: ");Serial.println(WiFi.localIP()); Serial.print("espClient [");client.setServer(MQTT_SERVER, MQTT_PORT); /* 连接WiFi之后，连接MQTT服务器 */client.setCallback(callback);}void mqttCheckConnect(){while (!client.connected()){Serial.println("Connecting to MQTT Server ...");if (client.connect(CLIENT_ID, MQTT_USRNAME, MQTT_PASSWD)){Serial.println("MQTT Connected!");}else{Serial.print("MQTT Connect err:");Serial.println(client.state());delay(5000);}}}void mqttIntervalPost(){char param[32];char jsonBuf[128];sprintf(param, "{\"CurrentTemperature\":%f}",T_sum/count);sprintf(jsonBuf, ALINK_BODY_FORMAT, param);Serial.println(jsonBuf);boolean d = client.publish(ALINK_TOPIC_PROP_POST, jsonBuf);if(d){Serial.println("publish Temperature success"); }else{Serial.println("publish Temperature fail"); }//https://blog.zeruns.tech sprintf(param, "{\"CurrentHumidity\":%f}",RH_sum/count);sprintf(jsonBuf, ALINK_BODY_FORMAT, param);Serial.println(jsonBuf);d = client.publish(ALINK_TOPIC_PROP_POST, jsonBuf);if(d){Serial.println("publish Humidity success"); }else{Serial.println("publish Humidity fail"); }}void errorDecoder(SHTC3_Status_TypeDef message) // The errorDecoder function prints "SHTC3_Status_TypeDef" resultsin a human-friendly way{switch(message){case SHTC3_Status_Nominal : Serial.print("Nominal"); break;case SHTC3_Status_Error : Serial.print("Error"); break;case SHTC3_Status_CRC_Fail : Serial.print("CRC Fail"); break;default : Serial.print("Unknown return code"); break;}}//https://blog.zeruns.techvoid setup() {/* initialize serial for debugging */Serial.begin(115200);dht.begin(); Serial.println("Demo Start");wifiInit();//Wire.begin(D5,D6); //初始化Wire（IIC）库unsigned char i=0;// errorDecoder(mySHTC3.begin());}// the loop function runs over and over again forevervoid loop(){delay(1000); //延时1000毫秒//SHTC3_Status_TypeDef result = mySHTC3.update();// if(dht.lastStatus == DHT11_Status_Nominal) //判断SHTC3状态是否正常// {float RH = dht.readHumidity(); //读取湿度数据float T = dht.readTemperature();//读取温度数据RH_sum+=RH;T_sum+=T;count+=1;// }else{// Serial.print("Update failed, error: ");// errorDecoder(dht.lastStatus); //输出错误原因// Serial.println();// }Serial.print("Humidity:"); //向串口打印 Humidity:Serial.print(RH); //向串口打印湿度数据Serial.print("%");Serial.print(" Temperature:");Serial.print(T); //向串口打印温度数据Serial.println("C"); Serial.println("https://blog.zeruns.tech");if (millis() - lastMs >= 30000){lastMs = millis();mqttCheckConnect(); /* 上报 */mqttIntervalPost();count=0;RH_sum=0;T_sum=0;}client.loop();}
需先安装PubSubClient、ArduinoJson、SparkFun SHTC3这三个库。这三个库不是 Arduino IDE 内置的库文件，需要先点击项目→加载库→管理库进入库管理器，搜索安装。
PubSubClient.h文件需要相应的修改，参考https://blog.zeruns.tech/archives/530.html
效果图
