單片機數碼管動態顯示不穩定

ID:1058641 · 發表于 2024-1-29 15:23

#include "dis.h"
#include "reg52.h"
#include "intrins.h"

#define out(b,d) { P0 = (d);P2 = (P2&0x1f) | (b<<5);P2 = (P2&0x1f); }

extern unsigned int f1;
extern unsigned char temp_code[];
extern unsigned char timer1[];
unsigned char smgdata[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf,0x8c};

void delay()             //@11.0592MHz
{
      unsigned char i, j;

      i = 12;
      j = 169;
      do
      {
            while (--j);
      } while (--i);
}

void selecthc573(unsigned char a)
{
      switch(a)
      {
            case 4: P2=(P2&0x1f)|0x80;break;
            case 5: P2=(P2&0x1f)|0xa0;break;
            case 6: P2=(P2&0x1f)|0xc0;break;
            case 7: P2=(P2&0x1f)|0xe0;break;
      }

}
void dsiplaysmg(unsigned char value,unsigned char pos)
{
      P0=0xff;
      selecthc573(6);
      P0=0x01<<pos;
      selecthc573(7);
      P0=value;
}

void smg_dis()
{
      dsiplaysmg(smgdata[17],0);
      delay();
      dsiplaysmg(smgdata[temp_code[4]],5);
      delay();
      dsiplaysmg(smgdata[temp_code[5]],6);
      delay();
      dsiplaysmg(smgdata[temp_code[6]],7);
      delay();