// Timer2_PWM
//
// Output a PWM signal on pins RA2 / RA1 / RA0
//    RA2 = 5/256
//    RA1 = 20/256
//    RA0 = 200/256

// Global Variables

const unsigned char MSG0[21] = "Timer2  PWM         "; 
   
unsigned char RED, GREEN, BLUE, TIME;

// Subroutine Declarations
#include <pic18.h>

// Subroutines
#include        "lcd_portd.c"

// High-priority service
void interrupt IntServe(void)
{
   if (TMR2IF) {
      TIME = TIME + 1;
      if (TIME == 0) PORTA = 7;
      if (TIME == RED) RA2 = 0;
      if (TIME == GREEN) RA1 = 0;
      if (TIME == BLUE)  RA0 = 0;
      TMR2IF = 0;
      }
   }

// Main Routine

void main(void)
{
   unsigned char i;
   unsigned int j;

   TRISA = 0;
   TRISB = 0x0F;
   TRISC = 0;
   TRISD = 0;
   TRISE = 0;
   ADCON1 = 0x0F;

   LCD_Init();                  // initialize the LCD

   LCD_Move(0,0);  for (i=0; i<20; i++) LCD_Write(MSG0[i]);

//   Wait_ms(2000);
//   LCD_Inst(1);  // clear LCD


// set up Timer2 for 1000 clocks
   T2CON = 0x05;
   PR2 = 249;
   TMR2ON = 1;
   TMR2IE = 1;
   TMR2IP = 1;
   PEIE = 1;


// turn on all interrupts
   GIE = 1;

   while(1) {
      RED = 5;
      GREEN = 20;
      BLUE = 200;
      LCD_Move(1,0);  LCD_Out(RED, 3, 0);
      LCD_Move(1,5);  LCD_Out(GREEN, 3, 0);
      LCD_Move(1,10);  LCD_Out(BLUE, 3, 0);
      }     
   }