add simple software for kitchen heater

soft/kitchen/kitchen_pilot_wire_control/kitchen_pilot_wire_control.ino

@@ -0,0 +1,57 @@
+/*
+  SimpleMQTTClient.ino
+  The purpose of this exemple is to illustrate a simple handling of MQTT and Wifi connection.
+  Once it connects successfully to a Wifi network and a MQTT broker, it subscribe to a topic and send a message to it.
+  It will also send a message delayed 5 seconds later.
+*/
+
+#include "EspMQTTClient.h"
+
+EspMQTTClient client(
+  "rico2",
+  "xxxxxx",
+  "192.168.1.3",  // MQTT Broker server ip
+  "MQTTUsername",   // Can be omitted if not needed
+  "MQTTPassword",   // Can be omitted if not needed
+  "pilote_cuisine",     // Client name that uniquely identify your device
+  1883              // The MQTT port, default to 1883. this line can be omitted
+);
+
+const int heating_pin = 14;
+
+void message_callback(const String &message)
+{
+  Serial.println(message);
+  if (message == "off") {
+      digitalWrite(heating_pin, LOW);
+  }
+  if (message == "on") {
+      digitalWrite(heating_pin, HIGH);
+  }
+}
+
+void setup()
+{
+  pinMode(heating_pin, OUTPUT);     // Initialize the LED_BUILTIN pin as an output
+  digitalWrite(heating_pin, LOW);   // Turn the LED on (Note that LOW is the voltage level
+
+  Serial.begin(115200);
+
+  // Optionnal functionnalities of EspMQTTClient : 
+  client.enableDebuggingMessages(); // Enable debugging messages sent to serial output
+  client.enableHTTPWebUpdater(); // Enable the web updater. User and password default to values of MQTTUsername and MQTTPassword. These can be overrited with enableHTTPWebUpdater("user", "password").
+  //client.enableLastWillMessage("TestClient/lastwill", "I am going offline");  // You can activate the retain flag by setting the third parameter to true
+}
+
+// This function is called once everything is connected (Wifi and MQTT)
+// WARNING : YOU MUST IMPLEMENT IT IF YOU USE EspMQTTClient
+void onConnectionEstablished()
+{
+  // Subscribe to "mytopic/test" and display received message to Serial
+  client.subscribe("chauffage/cuisine", &message_callback);
+}
+
+void loop()
+{
+  client.loop();
+}