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README.md
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@@ -14,6 +14,13 @@ ESP8266 project:
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 - my_wifi.h : Add your WiFi credentials
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 - my_mqtt.h : Add you broker details (ip, username, password)
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+Copy the templates and adapt them to your needs
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+
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+```bash
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+cp my_wifi.h.sample my_wifi.h
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+cp my_mqtt.h.sample my_mqtt.h
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+```
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+
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 # Dependencies
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 - **PubSubClient** by Nick O'Leary (v2.7.0+)
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 - **DHT sensor library** by Adafruit (v1.3.8)
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my_mqtt.h.sample
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+#ifndef _MQTT_H
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+#define _MQTT_H
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+
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+#include <PubSubClient.h> // Allows us to connect to, and publish to the MQTT broker
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+
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+
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+// MQTT
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+const int MAX_MQTT_CNX_RETRIES = 3;
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+static char mqtt_server[32] = "";
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+const char* mqtt_server_int = "192.168.0.1";
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+const char* mqtt_server_ext = "a.domain.tld";
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+const char* mqtt_topic = "topicDHT";
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+const int   mqtt_port = 1883;
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+// The client id identifies the ESP8266 device. Think of it a bit like a hostname (Or just a name, like Greg).
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+char clientID[22] = "";
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+const char* clientIDFmt="esp-%s";
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+
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+const char* mqtt_user="esp8266";
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+const char* mqtt_password="SomeRandomPassword";
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+
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+// Initialise the WiFi and MQTT Client objects
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+WiFiClient wifiClient;
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+PubSubClient client(mqtt_server, 1883, wifiClient); // 1883 is the listener port for the Broker
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+
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+void mqtt_connect() {
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+  if( 0 == strcmp(aplist[currentAPIndex].ssid,"wifi1") ) {
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+    //House Wifi
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+    client.setServer(mqtt_server_int, mqtt_port);
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+    //if (client.connect(clientID)) {
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+    if (client.connect(clientID,mqtt_user,mqtt_password)) {
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+      Serial.println("Connected to MQTT Broker : "+String(mqtt_server_int));
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+    } else {
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+      Serial.println("Connection to MQTT Broker "+String(mqtt_server_int)+"failed...");
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+      delay(2000);
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+    }
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+  } else {
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+    // External Wifi
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+    client.setServer(mqtt_server_ext, mqtt_port);
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+    if (client.connect(clientID,mqtt_user,mqtt_password)) {
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+      Serial.println("Connected to MQTT Broker : "+String(mqtt_server_ext));
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+    } else {
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+      Serial.println("Connection to MQTT Broker "+String(mqtt_server_ext)+"failed...");
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+      delay(2000);
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+    }
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+  }
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+}
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+
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+void mqtt_reconnect() {
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+  byte count = 0;
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+  while (!client.connected() && count < MAX_MQTT_CNX_RETRIES ) {
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+    Serial.print("Attempting MQTT reconnection...");
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+    mqtt_connect();
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+    count++;
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+  }
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+}
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+#endif //_MQTT_H
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my_wifi.h.sample
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+#ifndef _MY_WIFI_H
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+#define _MY_WIFI_H
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+
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+#include <ESP8266WiFi.h>
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+
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+//-----------------------------------------------------------------------------------
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+//Wifi Constants
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+//-----------------------------------------------------------------------------------
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+String WiFiIP;
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+typedef struct _ssid_list_t {
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+  const char* ssid;
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+  const char* password;
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+} ssid_list_t;
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+
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+//#define _TEST
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+#ifndef _TEST
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+static int currentAPIndex = -1;
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+const int MAX_CNX_RETRIES = 20;
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+ssid_list_t aplist[]={
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+  {"wifi1", "pass1"},
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+  {"wifi2", "pass2"},
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+  {"wifi3", "pass3"},
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+  {NULL,NULL}
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+};
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+#else
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+const int MAX_CNX_RETRIES = 1;
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+ssid_list_t aplist[]={
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+  {"Phony", "phonyaccount"},
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+  {NULL,NULL}
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+};
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+#endif //_TEST
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+
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+byte WiFiConnect() {
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+  WiFiIP = "No IP";
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+  //WiFi.disconnect(true);
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+  //delay(2000);
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+  //WiFi.mode(WIFI_STA);
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+  //WiFi.setAutoConnect(true);
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+
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+  byte i = 0;
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+  while(aplist[i].ssid!= NULL) {
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+    WiFi.persistent(false);
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+    WiFi.mode(WIFI_STA);
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+    WiFi.disconnect(true);
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+    delay(1000);
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+    WiFi.softAPdisconnect(true);
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+    delay(1000);
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+    Serial.print("WIFI status = ");
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+    Serial.println(WiFi.getMode());
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+
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+    WiFi.begin(aplist[i].ssid, aplist[i].password);
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+    byte count = 0;
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+    Serial.print("WiFiConnect: Connecting to ");
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+    Serial.print(aplist[i].ssid);
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+    draw(aplist[i].ssid, -1, -1, -1);
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+    while(WiFi.status() != WL_CONNECTED && count < MAX_CNX_RETRIES)
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+    {
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+      count ++;
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+      #ifdef BLINK_FLASH
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+        digitalWrite(LED_BUILTIN, 3);
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+        delay(500);
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+        digitalWrite(LED_BUILTIN, 0);
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+        delay(500);
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+      #else
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+        delay(500);
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+      #endif //BLINK_FLASH
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+      Serial.print(".");
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+      draw(aplist[i].ssid, NOLOGO, -1, 100*count/MAX_CNX_RETRIES);
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+    }
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+    if( WiFi.status() == WL_CONNECTED ) {
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+      Serial.println("");
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+      IPAddress ip = WiFi.localIP();
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+      WiFiIP =  String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
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+      Serial.println("WiFiConnect: "+WiFiIP);
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+      currentAPIndex = i;
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+      break;
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+    }
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+    if(WiFi.status() != WL_CONNECTED)
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+    {
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+      Serial.println("WiFiConnect: Failed");
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+    }
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+    i++;
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+  }
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+  digitalWrite(LED_BUILTIN, HIGH);
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+  return (WiFi.status() == WL_CONNECTED) ? 1 : 0;
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+}
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+
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+#endif //_MY_WIFI_H
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