Added ESP8266 LED dimmer example

Added ESP8266 LED dimmer example

Esp8266EasyIoT/examples/esp8266_dimmer/esp8266_dimmer.ino

@@ -0,0 +1,95 @@
+ /*
+ V1.0 - first version
+ 
+ Created by Igor Jarc <[email protected]>
+ See http://iot-playground.com for details
+ 
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ */
+#include <Esp8266EasyIoT.h>
+#include <SoftwareSerial.h> 
+
+Esp8266EasyIoT esp; 
+
+SoftwareSerial serialEsp(10, 11);
+
+
+
+#define PWM_OUT  13  // 
+#define FADE_DELAY 10 
+
+
+static int currLevel = 0; 
+static int newLevel = 0;
+Esp8266EasyIoTMsg dimmerMsg(0, V_DIMMER);
+Esp8266EasyIoTMsg lightMsg(0, V_DIGITAL_VALUE);
+
+
+void setup()
+{
+  serialEsp.begin(9600);
+
+  //Serial1.begin(9600); // ESP
+  Serial.begin(115200);  
+
+  Serial.println("EasyIoTEsp LED dimmer example init");
+
+  esp.begin(incomingMessage, 3, &serialEsp, &Serial);
+  //esp.begin(incomingMessage, 12, &Serial1, &Serial);
+  //esp.begin(incomingMessage, 3, &serialEsp);
+
+  esp.present(0, S_DIMMER );
+  // request last dimmer value
+  esp.request( 0, V_DIMMER );
+}
+
+void loop()
+{
+  if (esp.process())
+  {
+    if (newLevel != currLevel)
+    {
+      int dir = ( newLevel - currLevel ) < 0 ? -1 : 1;
+      currLevel += dir;
+      analogWrite( PWM_OUT, (int)(currLevel / 100. * 255) );
+
+      if (newLevel == currLevel)
+      {
+        esp.send(lightMsg.set(newLevel > 0 ? 1 : 0));
+        esp.send( dimmerMsg.set(newLevel) );
+      }
+      delay( FADE_DELAY );
+    }
+  }
+}
+
+void incomingMessage(const Esp8266EasyIoTMsg &message) {
+  Serial.println("New message");
+  if (message.type==V_DIGITAL_VALUE || message.type == V_DIMMER) {
+    newLevel = message.getInt();
+
+    newLevel *= ( message.type == V_DIGITAL_VALUE ? 100 : 1 );
+
+    newLevel = min(100, newLevel);
+    newLevel = max(0, newLevel);
+
+
+    Serial.print("Old level:");
+    Serial.print(currLevel);
+    Serial.print(", New level: ");
+    Serial.println(newLevel);
+  } 
+}
+
+void fadeToLevel(int newLevel)
+{
+  int dir = ( newLevel - currLevel ) < 0 ? -1 : 1;
+
+  while ( currLevel != newLevel ) {
+    currLevel += dir;
+    analogWrite( PWM_OUT, (int)(currLevel / 100. * 255) );
+    delay( FADE_DELAY );
+  }
+}