first commit

.gitignore

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+secrets.h

MagiQTT-Button.ino

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+#include <PubSubClient.h>
+#include <ESP8266WiFi.h>
+#include "secrets.h"
+const int feedButtonPin = 0;
+const int publishTimeout = 2000;
+const int feedButtonHoldTime = 50;
+const String payload = "penni";
+char* topic = "control/button";
+String clientName;
+
+WiFiClient wifiClient;
+PubSubClient client(server, port, callback, wifiClient);
+
+void callback(char* topic, byte* payload, unsigned int length) {
+  // handle message arrived
+}
+
+String macToStr(const uint8_t* mac)
+{
+  String result;
+  for (int i = 0; i < 6; ++i) {
+    result += String(mac[i], 16);
+    if (i < 5)
+      result += ':';
+  }
+  return result;
+}
+
+void setup() {
+  pinMode(feedButtonPin, INPUT_PULLUP);
+  Serial.begin(115200);
+  delay(10);
+  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");  
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  // Generate client name based on MAC address and last 8 bits of microsecond counter
+  clientName += "esp8266-";
+  uint8_t mac[6];
+  WiFi.macAddress(mac);
+  clientName += macToStr(mac);
+  clientName += "-";
+  clientName += String(micros() & 0xff, 16);
+
+  Serial.print("Connecting to ");
+  Serial.print(server);
+  Serial.print(" as ");
+  Serial.println(clientName);
+  
+  if (client.connect((char*) clientName.c_str())) {
+    Serial.println("Connected to MQTT broker");
+    Serial.print("Topic is: ");
+    Serial.println(topic);
+    
+    if (client.publish(topic, "control/button \"penni\" online")) {
+      Serial.println("Publish ok");
+    }
+    else {
+      Serial.println("Publish failed");
+    }
+  } else {
+    Serial.println("MQTT connect failed");
+    Serial.println("Will reset and try again...");
+    abort();
+  }
+}
+
+void loop() {
+  checkButton();
+}
+
+void checkButton() {
+  if (digitalRead(feedButtonPin) == LOW) {
+    long feedButtonPressedTime = millis();
+    while (digitalRead(feedButtonPin) == LOW) {
+      if (feedButtonPressedTime + feedButtonHoldTime < millis()) {
+        if (client.connected()){
+         sendMQTTMessage();
+        } else {
+          Serial.println("Disconnected... reconnecting");
+          if (client.connect((char*) clientName.c_str())) {
+            Serial.println("Connected to MQTT broker");
+            sendMQTTMessage();
+          };
+        };
+        while (digitalRead(feedButtonPin) == LOW) {
+          delay(100);
+        }; //Prevents multiple publishings
+      }
+    }
+  }
+}
+
+void sendMQTTMessage() {
+  Serial.print("Sending payload: ");
+  Serial.println(payload);
+  if (client.publish(topic, (char*) payload.c_str())) {
+    Serial.println("Publish ok");
+  } else {
+    Serial.println("Publish failed");
+  }
+}