RS485传感器组网采集数据通过WiFi上传到onenet实验代码

好的，下面是一个示例代码，可以帮助您实现RS485传感器组网并将数据通过WiFi上传到OneNet平台。请注意，这只是一个示例代码，您需要根据您的实际情况进行修改。

#include <SoftwareSerial.h>
#include <WiFiEsp.h>
#include <Wire.h>

SoftwareSerial RS485Serial(2, 3); //RS485总线连接到Arduino的2号和3号引脚
WiFiEspClient wifiClient;
String ssid = "your_SSID"; //WiFi网络的名称
String password = "your_password"; //WiFi网络的密码
String apiKey = "your_apiKey"; //OneNet平台的apiKey
String deviceId = "your_deviceId"; //OneNet平台的设备ID

void setup() {
  Serial.begin(115200);
  RS485Serial.begin(9600);
  WiFi.init(&Serial);
  connectWiFi();
}

void loop() {
  //读取传感器数据
  float temperature = readTemperature(); //读取温度传感器数据
  float humidity = readHumidity(); //读取湿度传感器数据

  //将数据上传到OneNet平台
  String data = "{\"temperature\":" + String(temperature) + ",\"humidity\":" + String(humidity) + "}";
  if (uploadData(data)) {
    Serial.println("Upload data successfully!");
  } else {
    Serial.println("Upload data failed!");
  }

  delay(10000); //每隔10秒上传一次数据
}

//连接WiFi网络
void connectWiFi() {
  WiFi.begin(ssid.c_str(), password.c_str());
  Serial.print("Connecting to ");
  Serial.print(ssid);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("WiFi connected");
}

//读取温度传感器数据
float readTemperature() {
  //发送读取温度传感器数据的命令到RS485总线
  RS485Serial.write(0x01); //传感器地址
  RS485Serial.write(0x03); //读取命令
  RS485Serial.write(0x00); //数据起始地址
  RS485Serial.write(0x01); //数据长度
  RS485Serial.write(0xC5); //CRC校验码
  delay(100); //等待传感器响应

  //读取传感器返回的数据
  byte data[8];
  int i = 0;
  while (RS485Serial.available()) {
    data[i] = RS485Serial.read();
    i++;
  }

  //计算温度值
  int rawValue = (data[3] << 8) | data[4];
  float temperature = rawValue / 16.0;

  return temperature;
}

//读取湿度传感器数据
float readHumidity() {
  //发送读取湿度传感器数据的命令到RS485总线
  RS485Serial.write(0x02); //传感器地址
  RS485Serial.write(0x03); //读取命令
  RS485Serial.write(0x00); //数据起始地址
  RS485Serial.write(0x01); //数据长度
  RS485Serial.write(0x9A); //CRC校验码
  delay(100); //等待传感器响应

  //读取传感器返回的数据
  byte data[8];
  int i = 0;
  while (RS485Serial.available()) {
    data[i] = RS485Serial.read();
    i++;
  }

  //计算湿度值
  int rawValue = (data[3] << 8) | data[4];
  float humidity = rawValue / 10.0;

  return humidity;
}

//将数据上传到OneNet平台
bool uploadData(String data) {
  if (wifiClient.connect("api.heclouds.com", 80)) {
    String postString = "POST /devices/" + deviceId + "/datapoints HTTP/1.1\r\n";
    postString += "Host: api.heclouds.com\r\n";
    postString += "Content-Type: application/json\r\n";
    postString += "api-key: " + apiKey + "\r\n";
    postString += "Content-Length: " + String(data.length()) + "\r\n\r\n";
    postString += data;

    wifiClient.print(postString);

    if (wifiClient.connected()) {
      while (wifiClient.available()) {
        String response = wifiClient.readStringUntil('\r');
        if (response.indexOf("success") > 0) {
          wifiClient.stop();
          return true;
        }
      }
    } else {
      Serial.println("Connection failed");
      wifiClient.stop();
      return false;
    }
  } else {
    Serial.println("Connection failed");
    wifiClient.stop();
    return false;
  }
}

这个示例代码假设您使用了两个传感器，分别是温度传感器和湿度传感器，它们的地址分别为1和2。您需要根据您实际使用的传感器进行修改。当然，您还需要将WiFi网络的名称、密码、OneNet平台的apiKey和设备ID修改为您自己的。