8266用点灯平台控制灯的代码
时间: 2023-05-30 18:03:57 浏览: 56
以下是8266用点灯平台控制灯的代码:
```C++
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
// WiFi网络设置
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
// MQTT服务器设置
const char* mqtt_server = "mqtt.dianlight.com";
const int mqtt_port = 1883;
const char* mqtt_username = "your_USERNAME";
const char* mqtt_password = "your_PASSWORD";
// GPIO引脚设置
const int ledPin = 2;
WiFiClient espClient;
PubSubClient client(espClient);
void setup() {
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
Serial.begin(115200);
delay(10);
// 连接WiFi网络
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// 连接MQTT服务器
client.setServer(mqtt_server, mqtt_port);
while (!client.connected()) {
Serial.print("Connecting to MQTT server...");
if (client.connect("ESP8266Client", mqtt_username, mqtt_password)) {
Serial.println("connected");
} else {
Serial.print("failed with state ");
Serial.println(client.state());
delay(2000);
}
}
// 订阅主题
client.subscribe("your_TOPIC");
}
void loop() {
// 保持MQTT连接
if (!client.connected()) {
reconnect();
}
client.loop();
}
// MQTT重新连接函数
void reconnect() {
while (!client.connected()) {
Serial.print("Connecting to MQTT server...");
if (client.connect("ESP8266Client", mqtt_username, mqtt_password)) {
Serial.println("connected");
client.subscribe("your_TOPIC");
} else {
Serial.print("failed with state ");
Serial.println(client.state());
delay(2000);
}
}
}
// MQTT消息处理函数
void callback(char* topic, byte* payload, unsigned int length) {
String message = "";
for (int i = 0; i < length; i++) {
message += (char)payload[i];
}
if (message == "on") {
digitalWrite(ledPin, HIGH);
} else if (message == "off") {
digitalWrite(ledPin, LOW);
}
}
```
请注意,您需要在代码中替换以下值:
- `your_SSID`:您的WiFi网络名称
- `your_PASSWORD`:您的WiFi网络密码
- `mqtt_server`:点灯平台的MQTT服务器地址
- `mqtt_username`:您的点灯平台账户用户名
- `mqtt_password`:您的点灯平台账户密码
- `your_TOPIC`:您在点灯平台创建的主题名称
此代码将通过MQTT订阅您在点灯平台创建的主题,并在收到`on`或`off`消息时控制GPIO引脚上的LED灯。您可以在点灯平台上发送这些消息以控制灯的状态。