AVR时分秒，数码后面的

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524464881| 实习生

楼主 | 2015-12-20 21:18 | 只看该作者 |只看大图回帖奖励

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AVR, 数码, ui, IDL, ST

数码管不该亮度的段位，都有暗光，请问是什么原因？

#include <iom16v.h>
#include <macros.h>
#define uchar unsigned char
#define uint  unsigned int
#pragma interrupt_handler miao:9
char num=0,fen=0,shi=0;
#pragma data:code
const  SMG[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,
            0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40};
const key[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
void ld(uchar i,uchar j)
{
  PORTB=0Xff;
  PORTA|=BIT(1);
  PORTB=SMG;
  PORTA&=~BIT(1);

  PORTB=0XFF;
  PORTA|=BIT(4);
  PORTB&=~BIT(j);
  PORTA&=~BIT(4);
  delay(3);
}
void lde(uchar i,uchar j)
{
  PORTB=0Xff;
  PORTA|=BIT(1);
  PORTB=key;
  PORTA&=~BIT(1);

  PORTB=0XFF;
  PORTA|=BIT(4);
  PORTB&=~BIT(j);
  PORTA&=~BIT(4);
  delay(1);
}

void delay(uint ms)
{
  uint i,j;
  for(i=0;i<ms;i++)
for(j=0;j<1000;j++);
}
void miao()
{
if(num==59)
{
   num=-1;
   if(fen==59)
   {
      fen=-1;
   if(shi==23)
   {
      shi=-1;
   }
   shi++;
   }
   fen++;
}
   num++;
  TCNT1H=0X48;
  TCNT1L=0XE4;
}

void timer_init()
{
  TCCR1B=0X04;
  TCNT1H=0X48;
  TCNT1L=0XE4;
  TIMSK|=BIT(2);
  SREG|=BIT(7);
}

void main()
{
  DDRB=0XFF;
  DDRA|=0X12;

  timer_init();

  while(1)
  {
ld(shi/24,0);
ld(shi%24,1);
lde(6,2);
ld(fen/10,3);
ld(fen%10,4);
lde(6,5);
ld(num/10,6);
ld(num%10,7);
  }
}