timer.c

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//-----------------------------------------------------------------------------
// timer.c
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include <reg52.h>
#include "main/main.h"
#include "cpu/cpu.h"
#include "misc/general.h"
//-----------------------------------------------------------------------------
// Timer0 Interrupt Routine
//-----------------------------------------------------------------------------
void Timer0_ISR (void) interrupt 1
{
    static char fiftyms = 0;
    static char ones    = 0;
    static char threes  = 0;
    static char sixs    = 0;

	TR0 = 0;
	Task0 = 1;						  // 50ms
	cpu_LED = OFF;
    if ( ++fiftyms == 20 )
	{
		fiftyms = 0;
        Task1 = 1;     			 	  // 1s
		cpu_LED = ON;
		if ( ++ones == 3 )
		{
			ones = 0;
           	Task2 = 1;				  // 3s
			if ( ++threes == 2 )
			{
				threes = 0;
	           	Task3 = 1;			  // 6s
				if ( ++sixs == 100 )
				{
					sixs = 0;
		           	Task4 = 1;		  // 10min
				}
			}
	    }
    }
    TH0 = MSBYTE( TIMER0_CLICK );     // set Timer0 overflow in 10ms
    TL0 = LSBYTE( TIMER0_CLICK );
	TR0 = 1;
}