// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.


#define PWM1 3	// define pwm on pin 3

boolean go = 1;  	// if 0, will not execute cycling routine
			//   will only set static value in setup()
			// if 1, will not set static value in setup()
			//   will execute cycling routine in loop()

void setup()
{
  pinMode(PWM1, OUTPUT);	// set pwm pin as output

  while(go == 0)
  {
    analogWrite(PWM1, 0xff);	// change this to set different static values
  
  }
}

void loop()
{
  while(go == 1)
  {
    for(int x=0; x<=255; x++)
    {
      analogWrite(PWM1, x);
      delay(25);
    }
    delay(100);
    for(int x=255; x>=0; x--)
    {
      analogWrite(PWM1, x);
      delay(25);
    }
    delay(100);
  }
}