单片机设置矩阵按键计算相应1到16的平方 -

标题: 单片机设置矩阵按键计算相应1到16的平方 [打印本页]

作者: 1440846197 时间: 2020-5-22 16:37
标题: 单片机设置矩阵按键计算相应1到16的平方
#include <reg52.h>

#define uint unsigned int
#define uchar unsigned char

sbit du = P2^6;       //段选
sbit we       = P2^7;       //位选

uint k;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,
0x6d,0x7d,0x07,0x7f,0x6f};

void delay(uint z)
{  uint x,y;
      for(x = z; x > 0; x--)
            for(y = 114; y > 0; y--);
}

void display(uint k)
{
      uchar bai,shi,ge;
      bai = k / 100;
      shi = k % 100 / 10;
      ge = k % 10;

            P0 = 0xff;
            we = 1;
            P0 = 0xfe;
            we = 0;

            du = 1;
            P0 = table[bai];
            du = 0;
            delay(5);

            P0 = 0xff;
            we = 1;
            P0 = 0xfd;
            we = 0;

            du = 1;
            P0 = table[shi];
            du = 0;
            delay(5);

            P0 = 0xff;
            we = 1;
            P0 = 0xfb;
            we = 0;

            du = 1;
            P0 = table[ge];
            du = 0;
            delay(5);
}

void keyscan()
{       P3 = 0xf0;
      if(P3 != 0xf0)
      {       delay(10);//软件消抖
            if(P3 != 0xf0)
      {
                     switch(P3)
            {       case 0xe0: k = 1; break;
                     case 0xd0: k = 2; break;
                     case 0xb0: k = 3; break;
                     case 0x70: k = 4; break;       }

      }
            P3 = 0x0f;
               switch(P3)
            {       case 0x0e: k = k; break;
                     case 0x0d: k = k + 4; break;
                     case 0x0b: k = k + 8; break;
                     case 0x07: k = k + 12; break;  }
                     while(P3 != 0x0f);//松手检测
                     }
}

void main ()
{       while(1)
      {       keyscan();
            display(k*k);

      }

}

作者: 1440846197 时间: 2020-5-22 16:37
这是源代码

作者: admin 时间: 2020-5-24 01:30
本帖需要重新编辑补全电路原理图,源码,详细说明与图片即可获得100+黑币(帖子下方有编辑按钮)

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