LED Fading

#include <p18f452.h>

#include <pwm.h>

#include <delays.h>

#include <timers.h>

#pragma config OSC = HS                 

#pragma config PWRT = ON 

#pragma config WDT = OFF

#pragma config LVP = OFF  

#pragma code

int a;

void Delay10mS(int x)

  {

  int i;

    for (i=0; i<x; i++) Delay10KTCYx(12);

  }

void main( void )

  {

  TRISB=0x00;                  //PWM am Pin

  OpenTimer2(T2_PS_1_16 & TIMER_INT_OFF);   //Timer2 prescaler 1:16,  interrupts OFF

  OpenPWM1(200);                 //PWMperiod = (200+1)*4*(1/48e6)*16) = 21,3ms --> 4,7kHZ

  while(1)                   //dimmen

    {

    for(a=0;a<640; a=a+16)           //Dutycycle 0%  100%

      {

      SetDCPWM1(a);

      Delay10mS(4);

      }

    for(a=0;a<640; a=a+16)           //Dutycycle 100%  0%

      {

      SetDCPWM1(640-a);

      Delay10mS(4);

      }

    }

}