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標題: 大佬們，有關單片機計算器的問題，按鍵之后好像會陷入死循環 [打印本頁]

作者: 君顏兮夢 時間: 2020-12-26 14:48
標題: 大佬們，有關單片機計算器的問題，按鍵之后好像會陷入死循環
只學了矩陣鍵盤，沒有學LCD所以請大佬們幫忙看看怎么解決這個東西另外由于仿真圖的矩陣鍵盤好像用不了就不放了，板子是ct107d的，熬夜好幾個晚上了，救救孩子吧

單片機源程序如下:
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sfr P4 = 0xC0;
//行線
sbit R1 = P3^0;
sbit R2 = P3^1;
sbit R3 = P3^2;
sbit R4 = P3^3;
//列線
sbit C1 = P4^4;
sbit C2 = P4^2;
sbit C3 = P3^5;
sbit C4 = P3^4;

uint Num,temp;
uchar fuhao,keyvalue,bai,shi,ge,flag,sign,a,b;
uchar i = 0;
uchar x1, x2, x3, x4, x5, x6, x7, x8;

uchar code tab[]={
0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0xff,
0x89,0x8e,0xc7,0xc0 };//段碼表

//延時函數
void delay(uint z)
{
      uint x, y;
      for (x = z; x > 0; x--)
            for (y = 112; y > 0; y--);
}

//掃描鍵盤函數
uchar Key_Scan()
{
      R1 = 0;                //第一行線清零0，其余行列置1
      R2 = R3 = R4 = 1;
      C1 = C2 = C3 = C4 = 1;

      if(C1 == 0)
      {
            while(!C1);
            Num = 0;
      }
      else if(C2 == 0)
      {
            while(!C2);
            Num = 1;
      }
      else if(C3 == 0)
      {
            while(!C3);
            Num = 2;
      }
      else if(C4 == 0)
      {
            while(!C4);
            fuhao = '+';
      }

      R2 = 0;                //第二行線清零0，其余行列置1
      R1 = R3 = R4 = 1;
      C1 = C2 = C3 = C4 = 1;

      if(C1 == 0)
      {
            while(!C1);
            Num = 3;
      }
      else if(C2 == 0)
      {
            while(!C2);
            Num = 4;
      }
      else if(C3 == 0)
      {
            while(!C3);
            Num = 5;
      }
      else if(C4 == 0)
      {
            while(!C4);
            fuhao = '-';
      }

      R3 = 0;                //第三行線清零0，其余行列置1
      R1 = R2 = R4 = 1;
      C1 = C2 = C3 = C4 = 1;

      if(C1 == 0)
      {
            while(!C1);
            Num = 6;
      }
      else if(C2 == 0)
      {
            while(!C2);
            Num = 7;
      }
      else if(C3 == 0)
      {
            while(!C3);
            Num = 8;
      }
      else if(C4 == 0)
      {
            while(!C4);
            fuhao = '*';
      }

      R4 = 0;                //第四行線清零0，其余行列置1
      R1 = R2 = R3 = 1;
      C1 = C2 = C3 = C4 = 1;

      if(C1 == 0)
      {
            while(!C1);
            Num = 9;
      }
      else if(C2 == 0)
      {
            while(!C2);
            fuhao = 'r';
      }
      else if(C3 == 0)
      {
            while(!C3);
            fuhao = '=';
      }
      else if(C4 == 0)
      {
            while(!C4);
            fuhao = '/';
      }
      return Num;
}

//計算鍵值函數
void  calculate()
{
      if (keyvalue == '+' || keyvalue == '-' || keyvalue == '*' || keyvalue == '/' || keyvalue == 'r' || keyvalue == '=')
      {
            if (flag == 0)//如果輸入的是第一個數據
            {
                     a = temp;//將temp的值賦給變量a
                     flag = 1;
            }
            else
            {
                     b = temp;//將temp的值賦給變量b
            }
            temp = 0;

            if (keyvalue != '=')
            {
                     sign = keyvalue;
            }
            else
            {
                     flag = 0;
                     switch (sign)
                     {
                     case '+':a = a + b;
                              break;
                     case '-':a = a - b;
                              break;
                     case '*':a = a * b;
                              break;
                     case '/':a = a / b;
                              break;
                     case 'r':a = 0;
                     default:break;
                     }
                     temp = a;//將a的值賦給變量temp
            }
            sign = 0;//將所有數據清零
            a = b = 0;
            temp = 0;
      }


      else if (
            keyvalue == 0 || keyvalue == 1 || keyvalue == 2 ||
            keyvalue == 3 || keyvalue == 4 || keyvalue == 5 ||
            keyvalue == 6 || keyvalue == 7 || keyvalue == 8 ||
            keyvalue == 9)
      {
            if (flag == 0)
            {
                     temp = keyvalue;
                     flag = 1;
            }
            else
            {
                     temp = temp * 10 + keyvalue;
            }
      }
}

//顯示函數
void display(uchar aa, uchar bb, uchar cc, uchar dd, uchar ee, uchar ff, uchar gg, uchar hh)
{
      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x01;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[aa];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x02;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[bb];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x04;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[cc];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x08;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[dd];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x10;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[ee];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x20;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[ff];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x40;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[gg];
      delay(5);

      P2 = 0x0; P0 = 0x0;
      P2 = ((P2 & 0x1f) | 0xc0);       P0 = 0x80;
      P2 = 0x0; P0 = 0xff;
      P2 = ((P2 & 0x1f) | 0xe0);       P0 = tab[hh];
      delay(5);
}

//計算每一位的值
void computer(uchar x)
{
      x8 = x / 10000000;
      x7 = (x - x8 * 10000000) / 1000000;
      x6 = (x - x7 * 1000000) / 100000;
      x5 = (x - x6 * 100000) / 10000;
      x4 = (x - x5 * 10000) / 1000;
      x3 = (x - x4 * 1000) / 100;
      x2 = (x - x3 * 100) / 10;
      x1 = x - x2 * 10;
      display(x8, x7, x6 , x5 , x4 , x3 , x2 , x1);
}

void main()
{
      P2 = ((P2&0x1f)|0xa0);
      P0 = 0X00;
      P2 = ((P2&0x1f)|0x80);
      P0 = 0xff;
      while(1)
      {

                     keyvalue = Key_Scan();
                     calculate();
                     computer(temp);
                     delay(10);
      }
}

作者: 君顏兮夢 時間: 2020-12-26 14:49
問題好像主要在計算函數那，網上大家用的方法看不懂

作者: 麥麥123 時間: 2020-12-26 15:43
好像確實是計算函數那里，還是上網找找一些常用的寫法吧

作者: 麥麥123 時間: 2020-12-26 15:44

君顏兮夢發表于 2020-12-26 14:49
問題好像主要在計算函數那，網上大家用的方法看不懂

感覺就是計算函數那里，還是找找網上常用的寫法吧

作者: 君顏兮夢 時間: 2020-12-26 21:13

麥麥123 發表于 2020-12-26 15:44
感覺就是計算函數那里，還是找找網上常用的寫法吧

現在改了一下，吧Num改成 Scan里的局部變量然后寫了個判斷語句，如果沒有按鍵按下就返回一個-1；剩下還在調試

作者: 微凝 時間: 2020-12-27 10:58
Num改成 Scan里的局部變量然后寫了個判斷語句，如果沒有按鍵按下就返回一個-1；剩下還在調試

作者: xianfajushi 時間: 2020-12-27 11:06
可參https://blog.csdn.net/xianfajush ... ult&utm_term=51 可參https://blog.csdn.net/xianfajush ... ult&utm_term=51

作者: 君顏兮夢 時間: 2020-12-27 17:30

xianfajushi 發表于 2020-12-27 11:06
可參https://blog.csdn.net/xianfajushi/article/details/80884859?ops_request_misc=%25257B%252522reques ...

謝謝，已參考csdn中藍橋杯的算法，加了一個二維數據解決了，調試可用

歡迎光臨 (http://m.raoushi.com/bbs/)