esp32 数据上传到 onenet 案例

可以使用以下代码将 ESP32 的数据上传到 OneNet：

#include <WiFi.h>
#include <HTTPClient.h>

const char* ssid = "YourSSID";
const char* password = "YourPassword";
const char* apiKey = "YourAPIKey";
const char* deviceId = "YourDeviceId";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Set up the HTTP client
  HTTPClient http;
  http.begin("http://api.heclouds.com/devices/" + String(deviceId) + "/datapoints");
  http.addHeader("api-key", apiKey);
  http.addHeader("Content-Type", "application/json");

  // Set up the data to be sent
  String data = "{\"datastreams\":[{\"id\":\"temperature\",\"datapoints\":[{\"value\":25.0}]}]}";

  // Send the data
  int httpResponseCode = http.POST(data);

  // Check for errors
  if (httpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
  } else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }

  // Disconnect from the server
  http.end();
}

void loop() {
  // Do nothing
}

这个代码将 ESP32 的温度数据上传到 OneNet 上的一个名为 "temperature" 的数据流中。你需要将代码中的 "YourSSID"、"YourPassword"、"YourAPIKey" 和 "YourDeviceId" 替换为你自己的值。