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標題: 51單片機簡易計算器程序無法顯示按鈕的數字 [打印本頁]

作者: wzh1791141993 時間: 2020-4-11 15:47
標題: 51單片機簡易計算器程序無法顯示按鈕的數字
51單片機做的簡易計算器，但是仿真的時候按按鈕數碼管沒反應，正常應該是按按鈕會顯示數字出來
#include "reg52.h"
#include "absacc.h"
unsigned char code table[]={0x77,0x7e,0xbe,0xde,0x7d,0xbd,0xdd,0x7b,0xbb,0xdb,0xee,0xed,0xeb,0xe7,0xd7,0xb7};
code unsigned char tab[]={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xFF};
unsigned char dspbuf[8]={10,10,10,10,10,10,10,0};
unsigned char dspcom=0;
bit key_re;
unsigned char key_press;
unsigned char key_value;
bit key_flag = 0;
unsigned char intr = 0;
unsigned char read_keyboard(void);
void key_proc(unsigned char key_code);
void ShowNumber(unsigned long num);
void display();
void cls_beep();
void cls_led();
void main(void)
{
unsigned char key_temp =0xff;
      TMOD=0x01;
      TL0=0x66;
      TH0=0xFC;
      TR0=1;
      ET0=1;
      EA=1;
cls_beep();
cls_led();
while(1)
{
      if(key_flag)
            {
                     key_flag=0;
                     key_temp=read_keyboard();
                     key_proc(key_temp);
            }
      }
}
      void isr_timer_0(void) interrupt 1
{
      TL0=0x66;
      TH0=0xFC;
      display();
if(++intr == 10) //1ms
      {
            intr=0;
            key_flag=1;
      }
}
      void cls_beep()
      {
            P0=0X00;
            P2=P2&0X1F|0XA0;
            P2=P2&0X1F;
      }
      void cls_led()
      {
            P0=0Xff;
            P2=P2&0X1F|0X80;
            P2=P2&0X1F;
      }
unsigned char read_keyboard(void)
      {
            unsigned char temp,scan,i;
            P3=0xf0;
            temp=P3;
            if (temp!=0xf0)
                     key_press++;
            else
                     key_press=0;
            if(key_press==2)
                     {
                              key_press=0;
                              key_re=1;
                              P3=0X0f;
                              scan=P3;
                              temp=temp|scan;
                     for(i=0;i<16;i++)
                              {
                                    if(temp==table[ i]);
                                    key_value=i;
                              }
                     }
                     if((key_re==1)&(temp==0xf0))
                     {
                              key_re = 0;
                              return key_value;
                     }
                              return 0xff;
      }

      void key_proc(unsigned char key_code)
      {
            static unsigned long result=0;
            static unsigned long addend=0;
            static unsigned char cp;
            if((key_code>=0)&&(key_code<=9))
            {
                     addend=addend*10+key_code;
                     ShowNumber(addend);
            }
            else if(key_code==10)
            {
            result=addend;
            cp=1;
            addend=0;
            ShowNumber(result);
            }
      else if(key_code==11)
            {
            result=addend;
            cp=2;
            addend=0;
            ShowNumber(result);
            }
      else if(key_code==12)
            {
            result=addend;
            cp=3;
            addend=0;
            ShowNumber(result);
            }
      else if(key_code==13)
            {
            result=addend;
            cp=4;
            addend=0;
            ShowNumber(result);
            }
      else if(key_code==14)
      {
            switch(cp)
      {
      case 1:result=result+addend;
            break;
      case 2:result=result-addend;
            break;
      case 3:result=result*addend;
            break;
      case 4:result=result/addend;
            break;
                     }
            addend=0;
            cp=0xff;
            ShowNumber(result);
            }
      else if(key_code==15)
            {
            result=0;
            addend=0;
            ShowNumber(addend);
            }
      }
      void ShowNumber(unsigned long num)
      {
(num>=100000)?(dspbuf[2]=num/100000):(dspbuf[2]=10);
(num>=10000)?(dspbuf[3]=(num%100000)/10000):(dspbuf[3]=10);
(num>=1000)?(dspbuf[4]=(num%10000)/1000):(dspbuf[4]=10);
(num>=100)?(dspbuf[5]=(num%1000)/100):(dspbuf[5]=10);
(num>=10)?(dspbuf[6]=(num%100)/10):(dspbuf[6]=10);
dspbuf[7]=num%10;
}
void display(void)
{
      P0=0xff;
      P2=P2&0x1f|0xe0;
      P2&=0x1f;

      P0=1<<dspcom;
      P2=P2&0x1f|0xc0;
      P2=P2&0x1F;

      P0=tab[dspbuf[dspcom]];
      P2=P2&0x1f|0xe0;
      P2=P2&0x1f;
      if(++dspcom==8)
            dspcom=0;
}

51hei圖片20200411154741.png (109.61 KB, 下載次數: 22)

作者: wzh1791141993 時間: 2020-4-11 15:58
z求大神解答，是哪里出問題了

作者: wzh1791141993 時間: 2020-4-11 16:06
求大佬指出問題

作者: 火神浪客行 時間: 2020-4-11 16:38
你忘了在按鍵掃描程序里升高按鍵標志KEY_FLAGE

作者: 火神浪客行 時間: 2020-4-11 16:44
每一毫秒拉高按鍵標志看似可行，但是你完成一次按鍵操作要多久？
你按鍵還沒按完已經是下一個標志了，按鍵怎么讀的出來？
把按鍵掃描放進中斷，再把升高按鍵標志放進掃描里就可以了

作者: qwertyuisdfghj 時間: 2021-10-27 09:34
#include "reg52.h"
#include "absacc.h"
unsigned char table[]={0x77,0x7e,0xbe,0xde,
                     0x7d,0xbd,0xdd,0x7b,
                     0xbb,0xdb,0xee,0xed,
                     0xeb,0xe7,0xd7,0xb7};

code char code tab[]={0xc0,0xf9,0xa4,0xb0,
                  0x99,0x92,0x82,0xf8,
                  0x80,0x90,0xff,0xbf};
unsigned char dspbuf[]={10,10,10,10,10,10,10,10};
unsigned char dspcom = 0;

bit key_re;
unsigned char key_press;
unsigned char key_value;

bit key_flag=0;
unsigned char intr=0;

unsigned char read_keyboard(void);
void key_proc(unsigned char key_code);
void ShowNumber(unsigned long num);

void display();
void cls_beep();
void cls_led();

void main(void)
{
unsigned char key_temp=0xff;
TMOD=0x01;
TL0=0x66;
TH0=0xFC;
TF0=0;
TR0=1;
ET0=1;
EA=1;
cls_beep();
cls_led();
while(1)
{
if(key_flag)
{
key_flag=0;
key_temp=read_keyboard();
key_proc(key_temp);
}
}
}

void isr_timer_0(void) interrupt 1
{
TL0=0x66;
TH0=0xFC;
display();
if(++intr == 10)
{
intr = 0;
key_flag=1;
}
}
void cls_beep()
{
P0=0X00;
P2=P2&0X1F|0XA0;
P2=P2&0X1F;
}
void cls_led()
{
P0=0Xff;
P2=P2&0X1F|0X80;
P2=P2&0X1F;
}

unsigned char read_keyboard(void)
{
unsigned char temp,scan,i;
P3=0xf0;
temp=P3&0xf0;
if(temp!=0xf0)
key_press++;
else
key_press=0;
if(key_press == 2)
{
key_press=0;
key_re=1;
P3=0X0F;
scan=P3&0X0F;
temp=temp|scan;
for(i=0;i<16;i++)
{
if(temp==table[i])
key_value=i;
}
}
//P3=0x0f
if((key_re == 1) && (temp == 0xF0))
{
key_re=0;
return key_value;
}
return 0xff;
}
void key_proc(unsigned char key_code)
{
static unsigned long result=0;
static unsigned long addend=0;
static unsigned char cp;
if((key_code>=0)&&(key_code<=9))//ÅD¶Ïêy×Ö¼ü
{
addend=addend*10+key_code;
ShowNumber(addend);
}
else
if(key_code==10)//¼ó·¨
{
result=result+addend;
cp=1;
addend=0;
ShowNumber(result);
}
else
if(key_code==11)//¼õ·¨
{
if(result==0)
result=addend;
else
result=result-addend;
addend=0;
cp=2;
ShowNumber(result);
}
else
if(key_code==12)//3Ë
{
if(result==0)
result=addend;
else
{
if(cp==0xff)
;
else
result=result*addend;
}
cp=3;
addend=0;
ShowNumber(result);
}
else
if(key_code==13)//3y·¨
{
if(result==0)
result=addend;
else
{
if(cp==0xff)
;
else
result=result/addend;
}
cp=4;
addend=0;
ShowNumber(result);
}
else if(key_code==14)//=
{
switch(cp)
{
case 1:result=result+addend;
break;
case 2:result=result-addend;
break;
case 3:result=result*addend;
break;
case 4:result=result/addend;
break;
}

addend=0;cp=0xff;
ShowNumber(result);
}
else if(key_code==15)//Çåáã
{
addend=0;
result=0;
ShowNumber(addend);
}
}
void ShowNumber(unsigned long num)
{
(num>=100000)?(dspbuf[2]=num/100000):(dspbuf[2]=10);
(num>=10000)?(dspbuf[3]=num%100000/10000):(dspbuf[3]=10);
(num>=1000)?(dspbuf[4]=num%10000/1000):(dspbuf[4]=10);
(num>=100)?(dspbuf[5]=num%1000/100):(dspbuf[5]=10);
(num>=10)?(dspbuf[6]=num%100/10):(dspbuf[6]=10);
dspbuf[7]=num%10;
}

void display(void)
{
P0 = 0xff;
P2 = ((P2&0x1f)|0xE0);
P2 &= 0x1f;

P0 = 1<<dspcom;
P2 = ((P2&0x1f)|0xC0);
P2 &= 0x1f;

P0 = tab[dspbuf[dspcom]];
P2 = ((P2&0x1f)|0xE0);
P2 &= 0x1f;

if(++dspcom == 8)
dspcom = 0;
}

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