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標題: 兩個獨立按鍵單片機程序控制靜態數碼管數字增加或減少 [打印本頁]

作者: kscheang 時間: 2021-1-14 01:21
標題: 兩個獨立按鍵單片機程序控制靜態數碼管數字增加或減少
//靜態數碼管, 按下K1增加到F, 按下K2減少到0

#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit K1=P1^0;
sbit K2=P1^2;
unsigned int i=0;
signed int j=0;
u8 code smgduan[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
                  0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(u16 i)
{
while(i--);
}
void keypush1()
{
if (K1==0)
{
  delay(1000);
  if (K1==0)
  {
j++;
  }
while(!K1);
}
}
void keypush2()
{
if (K2==0)
{
  delay(1000);
  if (K2==0)
  {
j--;
  }
while(!K2);
}
}
void DigDisplay()
{
P0=~smgduan[j];
}
void main()
{
while(1)
{
  keypush1();
  if (j>15)
  {
j=15;
  }
  keypush2();
  if (j<0)
  {
j=0;
  }
   DigDisplay();
}
}

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