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本帖最后由 T型骨头 于 2015-4-3 22:24 编辑
本人刚单片机入门，想要数码管显示时分秒，并且可以通过按键调整时间。现在却只能做到时间自动跳动，希望能得到帮助，衷心感谢！
以下是现在的程序
#define uchar unsigned char
#define uint unsigned int
#include <iom16v.h>
#include <macros.h>
uchar disbuf[4]={0,0,0,0};
const uchar discode[10]={ 0xC0, 0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90 };
uchar cnt=0;
uchar flag=0;
uchar timer[3]={00,00,00};
void delay(void)
{uchar i;
for(i=0;i<255;i++);
}
void timer1_init(void)
{
TCCR1B = 0x00;
TCNT1H = 0xc7;
TCNT1L = 0xc0;
//OCR1AH = 0x1C;
//OCR1AL = 0x20;
//OCR1BH = 0x1C;
//OCR1BL = 0x20;
//ICR1H = 0x1C;
//ICR1L = 0x20;
TCCR1A = 0x00;
TCCR1B = 0x04;
MCUCR = 0x00;
GICR = 0x00;
TIMSK = 0x04;
//SEI();
}
void Display(void)
{
PORTB=discode[disbuf[0]];
PORTA=0xF7;
delay();
PORTA=0xff;
PORTB=discode[disbuf[1]];
PORTA=0xFB;
delay();
PORTA=0xff;
switch(flag)
{
case 0x00:
PORTB=((discode[disbuf[2]])&0x7f); break;
case 0xff:
PORTB= (discode[disbuf[2]]); break;
default: break;
}
PORTA=0xFD;
delay();
PORTA=0xff;
PORTB=discode[disbuf[3]];
PORTA=0xFE;
delay();
PORTA=0xff;
}
void Process(uchar *p,uchar *disbuf)
{
disbuf[3]=timer[1]/10;
disbuf[2]=timer[1]%10;
disbuf[1]=timer[0]/10;
disbuf[0]=timer[0]%10;
}
void PORT_INT(void)
{
DDRA=0xFF;
DDRB=0xFF;
PORTA=0xFF;
PORTB=0xFF;
}
void main (void)
{
PORT_INT();
timer1_init();
SEI();
while(1)
{
Process(timer,disbuf);
Display();
}
}
#pragma interrupt_handler timer1_ovf_isr:9
void timer1_ovf_isr(void)
{ TCNT1H = 0xc7;
TCNT1L = 0xc0;
flag=~flag;
switch(flag)
{case 0x00:
{timer[0]++;
if(timer[0]==60)
{timer[0]=0;
timer[1]++;
if(timer[1]==60)
{timer[1]=0;
timer[2]++;
if(timer[2]==24)
timer[2]=0;
}
}
}
break;
case 0xff: break;
default: break;
}
}
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