main.i

编写的一个简单的定时器程序

// CodeVisionAVR C Compiler
// (C) 1998-2004 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega128


#pragma used+
sfrb PINF=0;
sfrb PINE=1;
sfrb DDRE=2;
sfrb PORTE=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRR0L=9;
sfrb UCSR0B=0xa;
sfrb UCSR0A=0xb;
sfrb UDR0=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb SFIOR=0x20;
sfrb WDTCR=0x21;
sfrb OCDR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrw ICR1=0x26;   // 16 bit access
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb ASSR=0x30;
sfrb OCR0=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TIFR=0x36;
sfrb TIMSK=0x37;
sfrb EIFR=0x38;
sfrb EIMSK=0x39;
sfrb EICRB=0x3a;
sfrb RAMPZ=0x3b;
sfrb XDIV=0x3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-


// Interrupt vectors definitions


// Needed by the power management functions (sleep.h)
#asm
	#ifndef __SLEEP_DEFINED__
	#define __SLEEP_DEFINED__
	.EQU __se_bit=0x20
	.EQU __sm_mask=0x1C
	.EQU __sm_powerdown=0x10
	.EQU __sm_powersave=0x18
	.EQU __sm_standby=0x14
	.EQU __sm_ext_standby=0x1C
	.EQU __sm_adc_noise_red=0x08
	.SET power_ctrl_reg=mcucr
	#endif
#endasm


void initTime0(void);
void initTime0(void);
//unsigned char num2=0; 
//unsigned char num1=0;

void main(void)
{ 
 //#asm("cli");
 __CLI();
  initTime0();
 #asm("sei");  
   while(1);
  /* { 
     while((TIFR&0X02)==0); 
     TIFR |=0X02;
     //TCNT0=56;     
     num++;
     if(num>=18)
      { 
       num=0;
      // PORTC.3 ^= 1; 
       PORTC.3=!led;
       OCR0 +=1;
       if(OCR0>210)
       OCR0=100;   
       }      
   }  */
}

interrupt [30] void timer3_isr(void)
{
 /*    num1++;  
     if(num1%2==1)
       OCR0=255;
     else  
       OCR0=127;
     if(num1>=28)
      { 
        num1=0;
        // PORTC.3 ^= 1; 
        PORTC.3=!led1;
      //  OCR0 +=1;
      //  if(OCR0>210)
     //   OCR0=100; 
      }  */
      if((*(unsigned char *) 0x87)<56)
      (*(unsigned char *) 0x87)++;
      else
      (*(unsigned char *) 0x87)=14;   
}              

/*interrupt [TIM0_OVF] void timer0_isr2(void)
{
     num2++;
     if(num2>=14)
      { 
        num2=0;
       // PORTC.5 ^= 1; 
        PORTC.5=!led2;
       // OCR0 +=1;
      //  if(OCR0>210)
      //  OCR0=100; 
      }     
}                      */