单片机之利用按键来使数码管上两位示数增加

#include

#include './delay/delay.h'

sbit seg_select = P2^1;

sbit bit_select = P2^0;

sbit key1 = P1^0;

#define SEGPORT  P0

unsigned 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*/

#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*/
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);
		}
}