STM32f103rct6开发板如何把烟雾值传到阿里云，用mqtt协议，esp8266的一系列代码

要把烟雾值传到阿里云，需要先连接好STM32f103rct6开发板和esp8266，然后再进行MQTT相关代码的编写。以下是一些参考代码：

1. esp8266连接WiFi的代码：

#include <ESP8266WiFi.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

void setup() {
  Serial.begin(115200);
  delay(100);

  WiFi.begin(ssid, password);

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

void loop() {
  // do something
}

2. esp8266连接阿里云MQTT的代码：

#include <ESP8266WiFi.h>
#include <PubSubClient.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* mqtt_server = "your_MQTT_SERVER";
const char* mqtt_username = "your_MQTT_USERNAME";
const char* mqtt_password = "your_MQTT_PASSWORD";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  delay(100);

  WiFi.begin(ssid, password);

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

  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);

  while (!client.connected()) {
    Serial.println("Connecting to MQTT server...");
    if (client.connect("ESP8266Client", mqtt_username, mqtt_password)) {
      Serial.println("Connected to MQTT server");
      client.subscribe("your_topic");
    } else {
      Serial.print("Failed to connect to MQTT server, rc=");
      Serial.print(client.state());
      Serial.println(" retrying in 5 seconds");
      delay(5000);
    }
  }
}

void loop() {
  // do something
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}

void callback(char* topic, byte* payload, unsigned int length) {
  // handle MQTT message
}

void reconnect() {
  while (!client.connected()) {
    Serial.println("Connecting to MQTT server...");
    if (client.connect("ESP8266Client", mqtt_username, mqtt_password)) {
      Serial.println("Connected to MQTT server");
      client.subscribe("your_topic");
    } else {
      Serial.print("Failed to connect to MQTT server, rc=");
      Serial.print(client.state());
      Serial.println(" retrying in 5 seconds");
      delay(5000);
    }
  }
}

3. STM32f103rct6开发板与烟雾传感器的代码：

#include <Wire.h>

#define SMOKE_SENSOR_ADDR 0x5A

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

void loop() {
  // read smoke sensor value
  Wire.beginTransmission(SMOKE_SENSOR_ADDR);
  Wire.write(0x00);
  Wire.endTransmission();
  Wire.requestFrom(SMOKE_SENSOR_ADDR, 1);
  if (Wire.available()) {
    int smoke = Wire.read();
    Serial.println(smoke);
  }
  delay(1000);
}

4. STM32f103rct6开发板与esp8266通信的代码：

#include <SoftwareSerial.h>

SoftwareSerial esp8266(2, 3); // RX, TX

void setup() {
  Serial.begin(9600);
  esp8266.begin(9600);
}

void loop() {
  // read smoke sensor value
  // ...

  // send smoke sensor value to esp8266
  String message = String(smoke);
  esp8266.println(message);

  // wait for response from esp8266
  while (esp8266.available()) {
    String response = esp8266.readStringUntil('\n');
    Serial.println(response);
  }
}

以上代码仅供参考，需要根据实际情况进行修改和完善。