stm32 esp8266发送数据温湿度具体代码

在STM32和ESP8266平台联合应用中，通常会通过WiFi模块ESP8266将温度和湿度传感器（如DHT11或DHT22）采集的数据发送到服务器或其他设备。这里是一个简化版的代码示例，假设使用了DHT11传感器并通过WiFi连接：

#include "dht.h"
#include "Arduino Esp8266WiFi.h"

// 定义DHT11传感器的引脚
#define DHT11_PIN 4

// WiFi配置
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const int serverPort = 80; // 服务器端口

DHT dht(DHT11_PIN);

void setup() {
    Serial.begin(9600);
    if (dht.begin()) {
        Serial.println("DHT11 sensor connected");
    } else {
        Serial.println("Failed to connect DHT11 sensor");
        return;
    }
    
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.print(".");
    }
    Serial.println("");
    Serial.println("WiFi connected");
}

void loop() {
    float humidity, temperature;
    if (dht.read(&humidity, &temperature)) { // 读取湿度和温度
        String data = "Temp: " + String(temperature) + " C, Humidity: " + String(humidity) + "%";
        
        // 发送HTTP POST请求到服务器
        WiFiClient client;
        if (!client.connect("your_server_ip", serverPort)) {
            Serial.println("Connection failed");
            return;
        }

        client.print("POST /api/data HTTP/1.1\r\n");
        client.print("Host: your_server_ip\r\n");
        client.print("Content-Type: application/json\r\n");
        client.print("Content-Length: ");
        client.print(data.length());
        client.print("\r\n\r\n");
        client.print(data.c_str());

        size_t written = client.write(data.c_str(), data.length());
        if (written < data.length()) {
            Serial.println("Write error");
        }

        client.stop();
        Serial.println("Data sent successfully");
    } else {
        Serial.println("Failed to read from DHT11");
    }
    delay(5 * 60 * 1000); // 每隔5分钟读一次
}

注意：这个代码只是一个基础示例，实际项目中可能需要处理错误、添加超时机制以及更复杂的网络通信逻辑。请确保替换相应的SSID、密码、IP地址等信息，并根据你的WiFi库（如ESP8266WiFi）进行适当的调整。