arduino ide写一个esp8266mqtt服务器通信的代码
时间: 2023-12-08 07:03:22 浏览: 43
抱歉,我是一名语言模型,无法进行编程操作。但是,我可以提供一份基本的ESP8266与MQTT服务器通信的代码,您可以根据实际需求进行修改:
```
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* mqtt_server = "your_MQTT_server_IP_address";
const char* mqtt_topic = "your_MQTT_topic";
WiFiClient espClient;
PubSubClient client(espClient);
void setup() {
Serial.begin(115200);
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);
while (!client.connected()) {
Serial.println("Connecting to MQTT server...");
if (client.connect("ESP8266Client")) {
Serial.println("Connected to MQTT server");
client.subscribe(mqtt_topic);
} else {
Serial.print("Failed, rc=");
Serial.print(client.state());
Serial.println("Retrying in 5 seconds...");
delay(5000);
}
}
}
void loop() {
if (!client.connected()) {
reconnect();
}
client.loop();
}
void reconnect() {
while (!client.connected()) {
Serial.println("Reconnecting to MQTT server...");
if (client.connect("ESP8266Client")) {
Serial.println("Connected to MQTT server");
client.subscribe(mqtt_topic);
} else {
Serial.print("Failed, rc=");
Serial.print(client.state());
Serial.println("Retrying in 5 seconds...");
delay(5000);
}
}
}
void callback(char* topic, byte* message, unsigned int length) {
Serial.print("Message arrived on topic: ");
Serial.print(topic);
Serial.print(". Message: ");
for (int i = 0; i < length; i++) {
Serial.print((char)message[i]);
}
Serial.println();
}
```
这个代码使用ESP8266连接到您的WiFi网络,并连接到MQTT服务器。它还订阅了指定的MQTT主题,并在接收到消息时打印出来。您可以根据需要修改主题和处理消息的方式。
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