利用单片进行0~20的计数程序 -

标题: 利用单片进行0~20的计数程序 [打印本页]

作者: 153846 时间: 2021-11-16 22:21
标题: 利用单片进行0~20的计数程序

可以实现0~20计数功能显示

#include<reg51.h>
#define LED_SEGMENT P0
sbit led1 = P2^0;
sbit led0 = P2^1;
#define ON 1
#define OFF 0
unsigned char code display_code[10]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90};
unsigned char code display_position[4]={0X01,0X02,0X04,0X08};
unsigned char display_buff[4];
unsigned int counter;

void delay_ms(unsigned int ms)
{
unsigned char k;
while(ms--)
         {
         for(k=0;k<123;k++);
         }
}

void display_process()
{
display_buff[0]=counter/10;
display_buff[1]=counter%10;
}

void LED_display()
{
LED_SEGMENT=display_code[display_buff[0]];
led1 = 1;
delay_ms(2);
led1 = 0;
LED_SEGMENT=display_code[display_buff[1]];
led0 = 1;
delay_ms(2);
led0 = 0;
}
void int0_counter()interrupt 0 using 1
{
      counter++;
      if(counter==21)
      counter=0;
}

void main()
{
      P3=0XFF;
      counter=0;
      EX0=1;
      IT0=1;
      EA=1;
      while(1)
      {
         display_process();
         LED_display();
      }
}

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