mqtt working state

platformio.ini

@@ -13,3 +13,4 @@ platform = espressif8266
 board = nodemcuv2
 framework = arduino
 monitor_speed = 115200
+lib_deps = knolleary/PubSubClient@^2.8

src/main.cpp

@@ -1,27 +1,120 @@
 #include <Arduino.h>
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
 
 #define LED 2
 
-// put function declarations here:
+#ifndef STASSID
+#define STASSID "CurrywurstPommesMajo"
+#define STAPSK "1976071219770620"
+#endif
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+
 int myFunction(int, int);
+void callback(char* topic, byte* payload, unsigned int length);
+void wifiSetup();
+void mqttSetup();
+
+void initiateAction(int);
+
+void wifiSetup() {
+
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(STASSID, STAPSK);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.print("Connected! IP address: ");
+  Serial.println(WiFi.localIP());
+};
+
+
+void mqttReconnect() {
+    while (!client.connected()) {
+        Serial.println("Connecting to MQTT...");
+
+        if (client.connect("ESP8266Client", "mosqhd", "ieN2K7YtGgkK" )) {
+
+          Serial.println("connected");
+
+        } else {
+          Serial.print("failed, rc=");
+          Serial.print(client.state());
+          Serial.println(" try again in 5 seconds");
+          // Wait 5 seconds before retrying
+          delay(5000);
+        }
+    }
+    client.publish("esp32/test", "Hello from ESP8266");
+    client.subscribe("esp32/output");
+}
+
+
+void initiateAction(int act) {
+
+  Serial.print("Action ");
+  Serial.println(act);
+
+}
+
+void callback(char* topic, byte* message, unsigned int length) {
+  Serial.print("Message arrived on topic: ");
+  Serial.print(topic);
+  Serial.print(". Message: ");
+  String messageTemp;
+  
+  for (int i = 0; i < length; i++) {
+    Serial.print((char)message[i]);
+    messageTemp += (char)message[i];
+  }
+  Serial.println();
+
+    // If a message is received on the topic esp32/output, you check if the message is either "on" or "off". 
+  // Changes the output state according to the message
+  if (String(topic) == "esp32/output") {
+    Serial.print("Changing output to ");
+    if(messageTemp == "on"){
+      Serial.println("on");
+      //digitalWrite(ledPin, HIGH);
+    }
+    else if(messageTemp == "off"){
+      Serial.println("off");
+      //digitalWrite(ledPin, LOW);
+    }
+  }
+}
+
 
 void setup() {
   Serial.begin(115200);
   pinMode(LED, OUTPUT);
+  wifiSetup();
+  client.setServer("muckibude.fritz.box", 1883);
+  client.setCallback(callback);
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
+
+  if (!client.connected()) {
+    mqttReconnect();
+  }
+  client.loop();
+
   myFunction(1,2);
 }
 
 // put function definitions here:
 int myFunction(int x, int y) {
   digitalWrite(LED, HIGH);
-  Serial.println("LED is on");
+  // Serial.println("LED is on");
   delay(1000);
   digitalWrite(LED, LOW);
-  Serial.println("LED is off");
+ // Serial.println("LED is off");
   delay(1000);
   return 1;
 }