Arduino communicate with Vixen Lighting Control Software

vixen_lights_6_channels.ino

/*
  16 Channels Lighting Controller
  By smching (ediy.com.my)
  Allow Arduino Mega to communicate with Vixen via generic serial plugin
*/
#define CHANNELS_COUNT 16
////////// PWM pin
#define Ch1 2  // PWM Pin 2
#define Ch2 3  // PWM Pin 3
#define Ch3 4  // PWM Pin 4
#define Ch4 5  // PWM Pin 5
#define Ch5 6  // PWM Pin 6
#define Ch6 7  // PWM Pin 7
#define Ch7 8  // PWM Pin 8
#define Ch8 9  // PWM Pin 9
#define Ch9 10  // PWM Pin 10
#define Ch10 11  // PWM Pin 11
#define Ch11 12  // PWM Pin 12
#define Ch12 13  // PWM Pin 13
/////////// digital pin
#define Ch13 18  // DIGITAL Pin 18
#define Ch14 19  // DIGITAL Pin 19
#define Ch15 20  // DIGITAL Pin 20
#define Ch16 21  // DIGITAL Pin 21
int Ch[CHANNELS_COUNT] = {Ch1, Ch2, Ch3, Ch4, Ch5, Ch6, Ch7, Ch8, Ch9, Ch10, Ch11, Ch12, Ch13, Ch14, Ch15, Ch16};
int incomingByte[CHANNELS_COUNT];   // array to store the values from serial port
void setup()
{
  Serial.begin(9600);        // set up Serial at 9600 bps
  for (byte i=0; i<CHANNELS_COUNT; i++) pinMode(Ch[i], OUTPUT);  // declare channel pin as an output
}
void loop() {  
   if (Serial.available() >= CHANNELS_COUNT) {
      for (int i=0; i<CHANNELS_COUNT; i++) { 
        incomingByte[i] = Serial.read(); // read each byte
        if (i<12) { //arduino mega consists of 12 PWM
           analogWrite(Ch[i], incomingByte[i]);   // Write current values to LED pins
        } else {  
           digitalWrite (Ch[i], incomingByte[i]); // Write the Digital Output to the LED pin.
        }      
      }
   }
}