Protues仿真实例（MEGA16）-T0_Timer.rar

#include<iom16v.h> #define uchar unsigned char uchar Table[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; uchar Data[4]={0,0,0,0}; uchar Time[2]={0,0}; uchar CNT=0; void DelayMs(uchar i) { uchar j; for(;i>0;i--) { for(j=0;j<250;j++); } } void Display(uchar *p) { uchar i,sel=0x01; for(i=0;i<4;i++) { PORTC=sel; PORTA=Table[p[i]]; DelayMs(2); sel=sel<<1; } } void Process(uchar *p1,uchar *p2) { p2[0]=p1[0]/10; p2[1]=p1[0]%10; p2[2]=p1[1]/10; p2[3]=p1[1]%10; } void Init_IO(void) { DDRA=0xff; PORTA=0xff; DDRC=0xff; PORTC=0xff; } void main(void) { Init_IO(); DelayMs(10); TCCR0=0x04; TCNT0=0x06; TIMSK=0x01; SREG=SREG|0x80; while(1) { Process(Time,Data); Display(Data); } } #pragma interrupt_handler Timer0:10 void Timer0(void) { CNT++; if(CNT==125) { CNT=0; Time[1]++; if(Time[1]==60) { Time[1]=0; Time[0]++; } if(Time[0]==60) Time[0]=0; } }