esp8266传输图片到onenet

要将图片传输到OneNet，您可以使用ESP8266连接到OneNet的HTTP API接口，然后通过POST请求将图片上传到OneNet。以下是一个简单的示例代码，您可以根据自己的需求进行修改：

#include <ESP8266HTTPClient.h>
#include <WiFiClientSecureBearSSL.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* apiKey = "your_API_KEY";
const char* deviceId = "your_DEVICE_ID";

void setup() {
  Serial.begin(9600);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("WiFi connected");

  BearSSL::WiFiClientSecure client;
  client.setInsecure();

  HTTPClient http;

  http.begin(client, "http://api.heclouds.com/devices/" + String(deviceId) + "/datapoints?type=3");

  String data = "{\"datastreams\":[{\"id\":\"image\",\"datapoints\":[{\"value\":\"\"}]}]}";

  http.addHeader("api-key", apiKey);
  http.addHeader("Content-Type", "application/json");

  int httpResponseCode = http.POST(data);

  if (httpResponseCode > 0) {
    Serial.printf("[HTTP] POST request succeeded, response code: %d\n", httpResponseCode);

    String imageUrl = http.getString();
    Serial.printf("[HTTP] Response: %s\n", imageUrl.c_str());

    // Upload the image to OneNet
    http.begin(client, imageUrl);
    http.addHeader("api-key", apiKey);
    httpResponseCode = http.POST((uint8_t*)your_image_data, your_image_size);
    if (httpResponseCode > 0) {
      Serial.printf("[HTTP] Image upload succeeded, response code: %d\n", httpResponseCode);
    } else {
      Serial.printf("[HTTP] Image upload failed, error: %s\n", http.errorToString(httpResponseCode).c_str());
    }
  } else {
    Serial.printf("[HTTP] POST request failed, error: %s\n", http.errorToString(httpResponseCode).c_str());
  }

  http.end();
}

void loop() {
}

在上面的代码中，您需要替换以下变量：

- ssid: 您的WiFi网络名称
- password: 您的WiFi网络密码
- apiKey: 您在OneNet上创建的API KEY
- deviceId: 您在OneNet上创建的设备ID
- your_image_data: 要上传的图片数据
- your_image_size: 要上传的图片大小

请注意，上面的代码仅供参考，您需要根据自己的需求进行修改。同时，在上传图片时，您需要将其转换为Base64编码，以便在JSON数据中传输。