ec01g获取经纬度并通过32串口发送到阿里云库函数代码

以下是获取经纬度并通过32串口发送到阿里云的示例代码：

#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <WiFi.h>
#include <HTTPClient.h>

// Define software serial object for 32 port
SoftwareSerial Serial32(13, 15); // RX, TX

// Define GPS object
TinyGPSPlus gps;

// Define WiFi credentials
const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";

// Define Aliyun IoT Platform credentials
const char* server = "Your_Aliyun_Server_Address";
const char* deviceID = "Your_Device_ID";
const char* deviceSecret = "Your_Device_Secret";
const char* productKey = "Your_Product_Key";

void setup() {
  // Start serial communication
  Serial.begin(115200);
  Serial32.begin(9600);

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

  // Wait for GPS signal
  while (gps.satellites.value() == 0) {
    delay(1000);
    Serial.println("Waiting for GPS signal...");
  }
  Serial.println("GPS signal found!");
}

void loop() {
  // Update GPS data
  while (Serial32.available() > 0) {
    gps.encode(Serial32.read());
  }

  // Check if GPS data is valid
  if (gps.location.isValid()) {
    // Get latitude and longitude
    float latitude = gps.location.lat();
    float longitude = gps.location.lng();

    // Convert latitude and longitude to string
    String location = String(latitude, 6) + "," + String(longitude, 6);

    // Send data to Aliyun IoT Platform
    sendToAliyun(location);
  }
}

void sendToAliyun(String location) {
  // Define API endpoint
  String endpoint = "/topic/" + productKey + "/" + deviceID + "/user/update";

  // Define message payload
  String message = "{\"location\":\"" + location + "\"}";

  // Define signature method and version
  String method = "GET";
  String version = "1.0";

  // Define timestamp
  String timestamp = String(millis());

  // Define signature content
  String content = method + "\n" + endpoint + "\n" + timestamp + "\n" + version + "\n";

  // Generate signature
  String signature = generateSignature(content, deviceSecret);

  // Define request URL
  String url = "http://" + server + endpoint + "?content=" + message + "&time=" + timestamp + "&sign=" + signature + "&version=" + version;

  // Send HTTP request
  HTTPClient http;
  http.begin(url);
  int httpCode = http.GET();
  if (httpCode > 0) {
    Serial.println("Data sent to Aliyun IoT Platform!");
  } else {
    Serial.println("Failed to send data to Aliyun IoT Platform!");
  }
  http.end();
}

String generateSignature(String content, String secret) {
  // Define HMAC-SHA1 object
  byte key[20];
  for (int i = 0; i < secret.length(); i++) {
    key[i] = secret.charAt(i);
  }
  char hash[20];
  Sha1.initHmac(key, secret.length());
  Sha1.print(content);
  Sha1.finishHmac(key, secret.length(), hash);

  // Convert hash to string
  String signature = "";
  for (int i = 0; i < 20; i++) {
    signature += String(hash[i], HEX);
  }
  return signature;
}

这段代码使用 TinyGPS++ 库从 GPS 模块获取经纬度信息，并通过串口发送到阿里云 IoT 平台。在 `sendToAliyun` 函数中，使用 HTTP GET 请求向阿里云 IoT 平台发送数据，其中包含经纬度信息和签名信息。签名使用 HMAC-SHA1 算法计算，需要使用 `Sha1` 库。请根据自己的实际情况修改 WiFi 和阿里云 IoT 平台的配置信息。