timer_pwm.c

8051 PWM

#include "pwm.h"

sbit LED = P1^6;

void Timer_ISR(void) interrupt 1
{
	if(LED == 0)
	{
		TH0 = (65536-1843)/256;    //9216 2ms
		TL0 = (65536-1843)%256;
	}
	else
	{
		TH0 = (65536-7373)/256;
		TL0 = (65536-7373)%256; 
	}     

    
	LED = ~LED;

}


void main (void) {

   Init_Device();

   while(1){                                  // spin forever      
   }
}