以前學的AVR寫的一些程序，分享一下
#include
#include
#define uint unsigned int
#define uchar unsigned char
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x18 ;PORTB
#endasm
#include
uchar startflag=0,bitnum,irtime,irprosok,irreceok;
uchar irdata[33],dis[8],ircode[4];
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
if(startflag==1)
{
if(irtime>=32)
{
bitnum=0;
}
irdata[bitnum]=irtime;
irtime=0;
bitnum++;
if(bitnum==33)
{
bitnum=0;
irreceok=1;
}
}
if(startflag==0)
{
startflag=1;
irtime=0;
}
}
// Timer 0 output compare interrupt service routine
interrupt [TIM0_COMP] void timer0_comp_isr(void)
{
irtime++;
}
void irpros(void)
{
uchar k,value,i,j;
k=1;
for(j=0;j<4;j++)
{
for(i=0;i<8;i++)
{
value=value>>1;
if(irdata[k]>6)
{
value=value|0x80;
}
k++;
}
ircode[j]=value;
}
irprosok=1;
}
void irwork(void)
{
dis[0]=ircode[0]/16;
dis[1]=ircode[0];
dis[2]=ircode[1]/16;
dis[3]=ircode[1];
dis[4]=ircode[2]/16;
dis[5]=ircode[2];
dis[6]=ircode[3]/16;
dis[7]=ircode[3];
}
void display_lcd()
{
lcd_gotoxy(0,0);
lcd_putchar(dis[0]+48);
lcd_putchar(dis[1]+48);
lcd_putchar(dis[2]+48);
lcd_putchar(dis[3]+48);
lcd_putchar(dis[4]+48);
lcd_putchar(dis[5]+48);
lcd_putchar(dis[6]+48);
lcd_putchar(dis[7]+48);
}
// Declare your global variables here
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 62.500 kHz
// Mode: CTC top=OCR0
// OC0 output: Disconnected
TCCR0=0x0C;
TCNT0=0x00;
OCR0=0x0f;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Falling Edge
// INT1: Off
// INT2: Off
GICR|=0x40;
MCUCR=0x02;
MCUCSR=0x00;
GIFR=0x40;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x02;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// LCD module initialization
lcd_init(16);
// Global enable interrupts
#asm("sei")
while (1)
{if(irreceok)
{
irpros();
irreceok=0;
}
if(irprosok)
{
irwork();
irprosok=0;
}
display_lcd();
};
}
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