单片机之利用按键来使数码管上两位示数增加

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#include <reg52.h>#include "./delay/delay.h"sbit seg_select = P2^1;sbit bit_select = P2^0;sbit key1 = P1^0;#define SEGPORT  P0unsigned char segdata[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};unsigned char bitdata[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsigned char TempData[2];void display(void){/*消除重影*/  static unsigned char i = 0;  SEGPORT = 0x0;              seg_select = 1;  seg_select = 0;    SEGPORT = 0xff;  bit_select = 1;  bit_select = 0;  SEGPORT = TempData[i];  seg_select = 1;  seg_select = 0;    SEGPORT = bitdata[i];  bit_select = 1;  bit_select = 0;      i++;    if(2 == i)    {i = 0;}}void timer0_init(void){EA = 1;                                //打开总中断  TMOD |= 0x01;                         //选择中断方式  TH0 = (65536 - 2000) / 256;  TL0 = (65536 - 2000) % 256;  ET0 = 1;  TR0 = 1;}void timer0_isr(void) interrupt 1{TH0 = (65536 - 2000) / 256;  TL0 = (65536 - 2000) % 256;  display();  }void main(){ unsigned char disdata = 0; timer0_init(); while(1) {  /*消抖*/    if(0 == key1)          //有按键按下  {     delay_ms(10);    if(0 == key1)       //确实有按键按下  {  while(!key1);    //有按键抬起

  delay_ms(10);  while(!key1);    //确实有按键抬起  }  disdata++;  if(100 == disdata)  {  disdata = 0;  } }TempData[0] = segdata[disdata / 10];TempData[1] = segdata[disdata % 10];    } }

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

/*delay.h*/

<pre name="code" class="html">#ifndef _DELAY_H_#define _DELAY_H_extern void delay_us(unsigned char t);extern void delay_ms(unsigned char t);extern void delay_s(unsigned char t);#endif

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

/*delay.c*/

<pre name="code" class="html">void delay_us(unsigned char t){while(--t);}void delay_ms(unsigned char t){while(t--){delay_us(245);delay_us(245);}}void delay_s(unsigned char t){    while(t--){        delay_ms(200);delay_ms(200);  delay_ms(200);delay_ms(200);  delay_ms(200);}}

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