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標(biāo)題: 關(guān)于矩陣鍵盤掃描多個(gè)數(shù)字的問(wèn)題。。。。 [打印本頁(yè)]

作者: 別緊張，我不是 時(shí)間: 2013-9-7 22:35
標(biāo)題: 關(guān)于矩陣鍵盤掃描多個(gè)數(shù)字的問(wèn)題。。。。
我想做個(gè)簡(jiǎn)易的計(jì)算器，999以內(nèi)加減乘除，數(shù)碼管顯示，但是鍵盤的檢測(cè)有問(wèn)題，請(qǐng)問(wèn)如何讓矩陣鍵盤掃描多個(gè)數(shù)字呢，一下是程序。
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
sbit key1=P3^4;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
                                    0x66,0x6d,0x7d,0x07,
                                    0x7f,0x6f,0x77,0x7c,
                                    0x39,0x5e,0x79,0x71,0};
uchar num,temp,shuzi1bai,shuzi1shi,shuzi1ge,shuzi2bai,shuzi2shi,shuzi2ge,jihao1,wan,qian,bai,shi,ge,fuhao,shuzi1,shuzi2;
long jieguo;
void delay (uint);
void display2(uchar,uchar);
//void display3(uchar,uchar,uchar);
//void display1(uchar,uchar,uchar,uchar,uchar);
uchar keyscan();
//uchar keyscan2();
void display(uchar );
//uint fuhao();
void main()
{
      uchar i=1;
      num=16;
      dula=1;
      P0=0;
      dula=0;
      wela=1;
      P0=0xdf;
      wela=0;
      while(1)
            {
                     keyscan();
                     if(num<=9&&num>=0&&i==1)
                     {
                              shuzi1bai=num;
                              display(shuzi1bai);
                              i++;
                     }
                     keyscan();
                     if(num<=9&&num>=0&&i==2)
                     {
                              shuzi1shi=num;
                        display(shuzi1shi);
                              i++;
                     }
                     keyscan();
                     if(num<=9&&num>=0&&i==3)
                     {
                              shuzi1ge=num;
                              display3(shuzi1bai/100,shuzi1shi/10,shuzi1ge);
                              shuzi1=shuzi1bai*100+shuzi1shi*10+shuzi1ge;
                              i++;
                     }
*******************中間這一段暫時(shí)不看**********************************
                     keyscan();
                     if(num>=10&&num<=13&&i==2)
                     {
                              shuzi1shi=num;
                              display(shuzi1shi);
                              i++;
                     }
                     keyscan();
                     if(num<=9&&num>=0&&i==3)
                     {
                              shuzi1ge=num;
                              display(shuzi1ge);
                              i++;
                     }
                     keyscan();
                     if(num==14&&i==4)
                     {
                              jihao1=1;
                              if(shuzi1>=0&&shuzi2>=0&&fuhao>=0)
                              {
                                    if(fuhao==10&&jihao1==1)
                                    {
                                             jieguo=shuzi1+shuzi2;
                                    }
                                    if(fuhao==11&&jihao1==1)
                                    {
                                             jieguo=shuzi1-shuzi2;
                                    }
                                    if(fuhao==12&&jihao1==1)
                                    {
                                             jieguo=shuzi1*shuzi2;
                                    }
                                    if(fuhao==13&&jihao1==1)
                                    {
                                             jieguo=shuzi1/shuzi2;
                                    }
                                    if(jieguo<=9)
                                             display(jieguo);
                                    else
                                    {
                                             shi=jieguo/10;
                                             ge=jieguo%10;
                                             display2(shi,ge);
                                    }
                              }
                     } */
                     while(shuzi1>=0&&shuzi2>=0&&fuhao>=0)
                     EA=1;

                     //delay(20);
                     keyscan();
                     if(num<=9&&num>=0&&i==2)
                     {
                              shuzi2=num;
                              display(shuzi2);
                              i++;
                     }
                     delay(20);
                     keyscan();
                     if(num>=12&&num<=15&&i==3)
                     {
                              i=1;

                     }
            }

}
********************************************************************
void display(uchar aa)
{
                     dula=1;
                     P0=table[aa];
                     dula=0;
}
uchar keyscan()
{
                     P3=0xfe;
                     temp=P3;
                     temp=temp&0xf0;
                     while(temp!=0xf0)
                              {
                                    delay(5);
                                    temp=P3;
                                    temp=temp&0xf0;
                                    while(temp!=0xf0)
                                    {
                                             temp=P3;
                                    switch(temp)
                                             {
                                                      case 0xee:num=0;
                                                            break;
                                                      case 0xde:num=1;
                                                            break;
                                                      case 0xbe:num=2;
                                                            break;
                                                      case 0x7e:num=3;
                                                            break;
                                             }
                                    while(temp!=0xf0)
                                             {
                                                      temp=P3;
                                                      temp=temp&0xf0;
                                             }
                                    }
                              }

                     P3=0xfd;
                     temp=P3;
                     temp=temp&0xf0;
                     while(temp!=0xf0)
                              {
                                    delay(5);
                                    temp=P3;
                                    temp=temp&0xf0;
                                    while(temp!=0xf0)
                                    {
                                             temp=P3;
                                    switch(temp)
                                             {
                                                      case 0xed:num=4;
                                                            break;
                                                      case 0xdd:num=5;
                                                            break;
                                                      case 0xbd:num=6;
                                                            break;
                                                      case 0x7d:num=7;
                                                            break;
                                             }
                                    while(temp!=0xf0)
                                             {
                                                      temp=P3;
                                                      temp=temp&0xf0;
                                             }
                                    }
                              }

                     P3=0xfb;
                     temp=P3;
                     temp=temp&0xf0;
                     while(temp!=0xf0)
                              {
                                    delay(5);
                                    temp=P3;
                                    temp=temp&0xf0;
                                    while(temp!=0xf0)
                                    {
                                             temp=P3;
                                    switch(temp)
                                             {
                                                      case 0xeb:num=8;
                                                            break;
                                                      case 0xdb:num=9;
                                                            break;
                                                      case 0xbb:num=10;
                                                            break;
                                                      case 0x7b:num=11;
                                                            break;
                                             }
                                    while(temp!=0xf0)
                                             {
                                                      temp=P3;
                                                      temp=temp&0xf0;
                                             }
                                    }
                              }

                     P3=0xf7;
                     temp=P3;
                     temp=temp&0xf0;
                     while(temp!=0xf0)
                              {
                                    delay(5);
                                    temp=P3;
                                    temp=temp&0xf0;
                                    while(temp!=0xf0)
                                    {
                                             temp=P3;
                                    switch(temp)
                                             {
                                                      case 0xe7:num=12;
                                                            break;
                                                      case 0xd7:num=13;
                                                            break;
                                                      case 0xb7:num=14;
                                                            break;
                                                      case 0x77:num=15;
                                                            break;
                                             }
                                    while(temp!=0xf0)
                                             {
                                                      temp=P3;
                                                      temp=temp&0xf0;
                                             }
                                    }
                              }
                     return num;

}

void delay(uint z)
{
      uint x,y;
      for(x=z;x>0;x--)
            for(y=110;y>0;y--);
}
void display1(uchar wan,uchar qian,uchar bai,uchar shi,uchar ge)
{

            dula=1;
            P0=table[wan];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xfd;
            wela=0;
            delay(1);

      dula=1;
            P0=table[qian];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xfb;
            wela=0;
            delay(1);

      dula=1;
            P0=table[bai];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xf7;
            wela=0;
            delay(1);

            dula=1;
            P0=table[shi];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xef;
            wela=0;
            delay(1);

            dula=1;
            P0=table[ge];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xdf;
            wela=0;
            delay(1);
}
void display2(uchar shi,uchar ge)
{
         dula=1;
            P0=table[shi];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xef;
            wela=0;
            delay(1);

            dula=1;
            P0=table[ge];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xdf;
            wela=0;
            delay(1);
}
void display3(uchar bai,uchar shi,uchar ge)
{
         dula=1;
            P0=table[bai];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xf7;
            wela=0;
            delay(1);

            dula=1;
            P0=table[shi];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xef;
            wela=0;
            delay(1);

            dula=1;
            P0=table[ge];
            dula=0;
            P0=0xff;
            wela=1;
            P0=0xdf;
            wela=0;
            delay(1);
}

按下第二個(gè)鍵時(shí)還是顯示的第一個(gè)數(shù)，求解。。。。

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