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[英]Not able to Receive subscribed Message with PubSubClient.h in Arduino WeMos D1 R32
[英]Not able to Receive subscribed Message with PubSubClient.h in Arduino Uno R3
#include "SPI.h"
#include “WiFiEsp.h”
#include <WiFiEspClient.h>
#include “SoftwareSerial.h”
#include <PubSubClient.h>
#include <WiFiEspUdp.h>
float temp=0;
int tempPin = 0;
int isClientConnected = 0;
char data[80];
char ssid[] = “SSID”; // your network SSID (name)
char pass[] = “PASSWORD”; // your network password
int status = WL_IDLE_STATUS; // the Wifi radio’s status
char deviceName = “ArduinoClient1”;
IPAddress server(xxx,xxx,xxx,xxx); //MQTT server IP
IPAddress ip(192,168,43,200);
void callback(char* topic, byte* payload, unsigned int length) {
Serial.print(“Message arrived [“);
Serial.print(topic);
Serial.print(“] “);
for (int i=0;i<length;i++) {
Serial.print((char)payload[i]);
}
Serial.println("-");
}
// Emulate Serial1 on pins 6/7 if not present
WiFiEspClient espClient;
PubSubClient client(espClient);
SoftwareSerial Serial1(6,7); // RX, TX
void setup(){
Serial.begin(9600);
Serial1.begin(9600);
WiFi.init(&Serial1);
WiFi.config(ip);
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
while (true);
}
while ( status != WL_CONNECTED) {
Serial.print("Attemptingonnect to WPA SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
Serial.print("WiFius : ");
Serial.println(status);
}
//connect to MQTT server
client.setServer(server, 1883);
client.setCallback(callback);
isClientConnected = client.connect(deviceName);
Serial.println("+++++++");
Serial.print("isClientConnected;
Serial.println(isClientConnected);
Serial.print("client.state");
Serial.println(client.state());
if (isClientConnected) {
Serial.println("Connected…..");
client.publish("status","Welcome to ISG");
client.subscribe("isg/demoPublish/rpi/ardTempWarn");
//Not able to recieve for this subscribed topic on Arduino Uno Only if I
//print it returns 1
}
}
void loop() {
temp = (5.0 * analogRead(tempPin) * 100.0) / 1024;
Serial.print(" temp : " );
Serial.println(temp);
Serial.print("client.connected);
Serial.println(client.connected());
if (!client.connected()) {
reconnect();
}
client.publish("isg/demoPublish/ard1/tempLM35",String(temp).c_str());
// able to receive data at other
// clients like RPI,Web using Mosquitto broker
client.loop();
delay(5000);
}
void reconnect() {
Serial.println("Device is trying to connect to server ");
while (!client.connected()) {
if (client.connect(deviceName)) {
} else {
delay(5000);
}
}
}
我使用Arduino Uno R3和ESP8266-01作為wifi連接器。 我必須讀取溫度數據並發送到Mosquitto,MongoDB和Raspberry Pi並接收有關特定條件的數據,因為我已經在Arduino中訂閱了一個主題。 我能夠從Arduino接收所有其他客戶的數據,但我無法接收Arduino中訂閱主題的數據。 但像MongoDB這樣的所有其他設備都能夠從Raspberry Pi接收數據。 我使用了Arduino Uno R3,ESP8266-01設備和liberary用於連接和發送/接收數據WiFiEsp.h,WiFiEspClient.h,WiFiEspUdp.h,SoftwareSerial.h,PubSubClient.h client.subscribe(“topic”); 返回1還實現了回調函數但無法調用。
所以任何人都可以幫助我為什么我沒有在Arduino中訂閱主題消息?
你正在使用的庫有回調錯誤,因此你最好使用其他庫我的偏好是https://github.com/vshymanskyy/TinyGSM這個庫包括幾乎所有的SIM800變體(A,C,L, H,808),SIM900(A,D,908,968),ESP8266(安裝在arduino上),以太網屏蔽等的變體。它對我有用,因為同樣的問題在我看了差不多1-2周,但后者能夠全部收到訂閱消息,與通信模式無關(GSM,以太網,WiFi)
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