You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
//安装mqtt客户端 PubSubClient 库
|
|
|
|
#include <ESP8266WiFi.h>
|
|
#include <PubSubClient.h>
|
|
|
|
// WiFi settings
|
|
const char *ssid = "rehome"; // Replace with your WiFi name
|
|
const char *password = "Ruihong123"; // Replace with your WiFi password
|
|
|
|
// MQTT Broker settings
|
|
const char *mqtt_broker = "mqtt.fileview123.com"; // EMQX broker endpoint
|
|
const char *mqtt_topic = "/device/esp8266/+"; // MQTT topic
|
|
const char *mqtt_username = "admin"; // MQTT username for authentication
|
|
const char *mqtt_password = "publish452131wW452131wW$"; // MQTT password for authentication
|
|
const int mqtt_port = 1883; // MQTT port (TCP)
|
|
const char *mqtt_topic_publish = "/device/esp8266/status"; // MQTT topic publish
|
|
|
|
WiFiClient espClient;
|
|
PubSubClient mqtt_client(espClient);
|
|
|
|
void connectToWiFi();
|
|
|
|
void connectToMQTTBroker();
|
|
|
|
void mqttCallback(char *topic, byte *payload, unsigned int length);
|
|
|
|
void setup() {
|
|
Serial.begin(115200);
|
|
connectToWiFi();
|
|
mqtt_client.setServer(mqtt_broker, mqtt_port);
|
|
mqtt_client.setCallback(mqttCallback);
|
|
connectToMQTTBroker();
|
|
}
|
|
|
|
void connectToWiFi() {
|
|
delay(10);
|
|
Serial.println();
|
|
Serial.print("正在连接: ");
|
|
Serial.println(ssid);
|
|
WiFi.begin(ssid, password);
|
|
Serial.print("Connecting to WiFi");
|
|
while (WiFi.status() != WL_CONNECTED) {
|
|
delay(500);
|
|
Serial.print(".");
|
|
}
|
|
Serial.println("\nConnected to the WiFi network");
|
|
Serial.println("");
|
|
Serial.println("WiFi 连接成功");
|
|
Serial.println("IP 地址: ");
|
|
Serial.println(WiFi.localIP());
|
|
}
|
|
|
|
void connectToMQTTBroker() {
|
|
while (!mqtt_client.connected()) {
|
|
Serial.print("尝试 MQTT 连接...");
|
|
//String client_id = "esp8266-client-" + String(WiFi.macAddress());
|
|
String client_id = "esp8266-client-";
|
|
client_id += String(random(0xffff), HEX);
|
|
Serial.printf("Connecting to MQTT Broker as %s.....\n", client_id.c_str());
|
|
if (mqtt_client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
|
|
Serial.println("Connected to MQTT broker");
|
|
Serial.println("连接成功");
|
|
mqtt_client.subscribe(mqtt_topic);
|
|
// Publish message upon successful connection
|
|
//mqtt_client.publish(mqtt_topic, "Hi EMQX I'm ESP8266 ^^");
|
|
} else {
|
|
Serial.print("Failed to connect to MQTT broker, rc=");
|
|
Serial.print(mqtt_client.state());
|
|
Serial.println(" try again in 5 seconds");
|
|
delay(5000);
|
|
}
|
|
}
|
|
}
|
|
|
|
void mqttCallback(char *topic, byte *payload, unsigned int length) {
|
|
Serial.print("Message received on topic: ");
|
|
Serial.println(topic);
|
|
Serial.print("Message:");
|
|
for (unsigned int i = 0; i < length; i++) {
|
|
Serial.print((char) payload[i]);
|
|
}
|
|
Serial.println();
|
|
Serial.println("-----------------------");
|
|
}
|
|
|
|
void loop() {
|
|
if(WiFi.status() != WL_CONNECTED){
|
|
connectToWiFi();
|
|
}
|
|
if (!mqtt_client.connected()) {
|
|
connectToMQTTBroker();
|
|
}
|
|
mqtt_client.loop();
|
|
|
|
// 发布消息示例
|
|
static unsigned long lastMsg = 0;
|
|
if (millis() - lastMsg > 5000) {
|
|
lastMsg = millis();
|
|
|
|
String message = "Hello from esp8266 - esp_connect_mqtt.ino_" + String(millis());
|
|
mqtt_client.publish(mqtt_topic_publish, message.c_str());
|
|
|
|
Serial.println("消息已发布: " + message);
|
|
}
|
|
}
|