51單片機簡易計算器程序無法顯示按鈕的數字

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wzh1791141993

發布時間: 2020-4-11 15:47

正文摘要:

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,0xd ...

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ID:958368 發表于 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;
}

ID:591189 發表于 2020-4-11 16:44