timer.h

万能遥控器解码

void init_devices0(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
TCCR0 = 0x00; //stop timer
 TCNT0 = 0xCE; //set count value
 OCR0  = 0x32;
 TCCR0 = 0x02; //start timer
 MCUCR = 0x00;
 EMCUCR = 0x00;
 GICR = 0x00;
 TIMSK = 0x02;
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

#pragma interrupt_handler timer0_ovf_isr:iv_TIM0_OVF
void timer0_ovf_isr(void)
{
 TCNT0 = 0xCE; //reload counter value
  if(PIND&0X20==1)
     {
	   TCCR0 = 0x00;
	   init_devices1();
	 }  
}
//call this routine to initialize all peripherals
void init_devices1(void)
{
 unsigned int i; 
  unsigned char n,j,m;
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
TCCR1B = 0x00; //stop
 TCNT1H = 0xF5; //setup
 TCNT1L = 0x11;
 TCCR1A = 0x00;
 TCCR1B = 0x01; //start Timer
 MCUCR = 0x00;
 EMCUCR = 0x00;
 GICR = 0x00;
 TIMSK = 0x80;
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

#pragma interrupt_handler timer1_ovf_isr:iv_TIM1_OVF
void timer1_ovf_isr(void)
{
 TCCR1B = 0x00;
 TCNT1H = 0xF5; //reload counter high value
 TCNT1L = 0x11; //reload counter low value
  m<<=1;
   if(PIND&0X20==0) 
        {
	      m&=0;	            
        }
             else
	             {  
	              m&=1;	        
	             }  
	
}