独立键盘实验报告

/**************************************************

实验名称：独立按键实验一

实验目的：数码管前三位显示一个跑表，从000到999之间

       以1%秒速度运行，当按下一个独立键盘时跑表

  停止，松开手后跑表继续。用定时器设计表。

实验备注：按下按键时跑表是停止了，但只显示最后一位

  数字，因为执行按键程序的while了，display

 就没有继续动态显示前两位数码管的数字，能

 否改善这个问题咧?

**************************************************/

#include<reg52.h>

#define uchar unsigned char

#define uint unsigned int

sbit key_01 = P3^4;

sbit DUAN = P2^6;

sbit WEI = P2^7;

uchar flag;

uint num;

uchar bai, shi, ge;

uchar code duan_table[]=

{0x3f,0x06,0x5b,0x4f,

 0x66,0x6d,0x7d,0x07,

 0x7f,0x6f,0x77,0x7c,

 0x39,0x5e,0x79,0x71};

uchar code wei_table[]=

{0xfe,0xfd,0xfb,

 0xf7,0xef,0xdf};

void delay_1ms(uchar);

void display(uchar,uchar,uchar);

void main()

{

num = 0;

flag = 0;

TMOD = 0x01;

TH0 = (65536-9216)/256;

TL0 = (65536-9216)%256;

EA = 1;

ET0 = 1;

TR0 = 1;

while(1)

{

while(key_01 == 0)//等待按键释放

{

delay_1ms(5);

if(key_01 == 0)

{

ET0 = 0;

}

}

ET0 = 1;

if(flag == 10)

{

flag = 0;

num++;

if(num >= 1000)

num = 0;

bai = num/100;

shi = num%100/10;

ge = num%10;

}

display(bai,shi,ge);

}

}

void delay_1ms(uchar x)

{

uchar i, j;

for(i = 0; i < x; i++)

for(j = 0; j < 110; j++);

}

void display(uchar bai, uchar shi, uchar ge)

{

DUAN = 1;

P0 = duan_table[bai];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[0];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[shi];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[1];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[ge];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[2];

WEI = 0;

delay_1ms(1);

}

/*void display(uchar i,uchar j,uchar k)

{

DUAN = 1;

P0 = duan_table[i];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[0];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[j];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[1];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[k];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[2];

WEI = 0;

delay_1ms(1);

}*/

void Timer0() interrupt 1

{

TH0 = (65536-9216)/256;

TL0 = (65536-9216)%256;

flag++;

}

/**************************************************

实验名称：独立按键实验二

实验目的：数码管前三位显示一个跑表，从000到999之间

          以1%秒速度运行，按下第一个键时计时停止，

  按下第二个键时计时开始，按下第三个键时数

  值清零从头开始。

实验备注：

**************************************************/

#include<reg52.h>

#define uchar unsigned char

#define uint unsigned int

sbit DUAN = P2^6;

sbit WEI = P2^7;

sbit key_01 = P3^4;

sbit key_02 = P3^5;

sbit key_03 = P3^6;

uchar code duan_table[]=

{0x3f,0x06,0x5b,0x4f,

 0x66,0x6d,0x7d,0x07,

 0x7f,0x6f,0x77,0x7c,

 0x39,0x5e,0x79,0x71};

uchar code wei_table[]=

{0xfe,0xfd,0xfb,

 0xf7,0xef,0xdf};

uchar flag;

void delay_1ms(uchar);

void display(uchar, uchar, uchar);

void main()

{

uchar bai, shi, ge;

uint num;

bai = 0;

shi = 0;

ge = 0;

num = 0;

flag = 0;

TMOD = 0x01;

TH0 = (65536-9216)/256;

TL0 = (65536-9216)%256;

EA = 1;

ET0 = 1;

TR0 = 1;

while(1)

{

if(key_01 == 0)

{

delay_1ms(5);

if(key_01 == 0)

{

ET0 = 0;

while(!key_01);//等待按键释放

}

}

if(key_02 == 0)

{

delay_1ms(5);

if(key_02 == 0)

{

ET0 = 1;

while(!key_02);//等待按键释放

}

}

if(key_03 == 0)

{

delay_1ms(5);

if(key_03 == 0)

{

num = 0;

while(!key_03);//等待按键释放

}

}

if(flag == 1)

{

flag = 0;

num++;

bai = num/100;

shi = num%100/10;

ge = num%10;

if(num >= 1000)

num = 0;

}

display(bai,shi,ge);

}

}

void delay_1ms(uchar x)

{

uchar i,j;

for(i = 0; i < x; i++)

for(j = 0; j < 110; j++);

}

void display(uchar bai,uchar shi, uchar ge)

{

DUAN = 1;

P0 = duan_table[bai];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[0];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[shi];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[1];

WEI = 0;

delay_1ms(1);

DUAN = 1;

P0 = duan_table[ge];

DUAN = 0;

P0 = 0xff;

WEI = 1;

P0 = wei_table[2];

WEI = 0;

delay_1ms(1);

}

void Timer0() interrupt 1

{

TH0 = (65536-9216)/256;

TL0 = (65536-9216)%256;

flag++;

}