单片机按键控制流水灯的4个状态源程序

ID:519743 · 发表于 2020-12-26 22:11

第一次再这个论坛分享，如有错误，还请批评指正。配合单片机开发板使用的程序，当按下按键1时，LED每隔1S闪烁一次；当按下按键2时，流水灯从左往右流水，当按下按键3时，流水灯从左往右流水流水，当按下按键4时，LEDD灯全灭；

单片机源程序如下:

#include<reg51.h>
#include"stdio.h"
sbit K1 = P3^0;
sbit K2 = P3^1;
sbit K3 = P3^2;
sbit K4 = P3^3;
unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99};
unsigned char code table1[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
unsigned char code table2[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
void delay1() //@12.000MHz
{
unsigned char i, j;
i = 12;
j = 169;
do
{
while (--j);
} while (--i);
}
void delay(unsigned int n)
{
unsigned char i;
for(i=0;i<n;i++)
{
delay1();
}
}
void Cls_Peripheral(void) //关闭外设；
{
P0 = 0XFF;
P2 = P2 & 0X1F | 0X80;
P2 &= 0X1F;
P0 = 0;
P2 = P2 & 0X1F | 0XA0;
P2 &= 0X1F;
}
void Set_74HC138(unsigned char outnum) //打开某一位的开关；
{
P2 &= ~(0x7<<5);
P2 |= ((outnum&0x07)<<5);
}
void led_init(unsigned char n) //选择某个数字；
{
Set_74HC138(6); //打开位选段
P0 = 0X01;
P2 = 0X1F;
Set_74HC138(7); //打开段选端；
P0 = table[n];
P2 = 0X1F;
}
void main(void)
{ char KEY1=0, KEY2=0,KEY3=0,KEY4=0,j=0;
static char z=0,l=0;
Cls_Peripheral(); //关外设?
while(1)
{
if(K1 == 0)
{
KEY1 = 1;
KEY2 = 0;
KEY3 = 0;
KEY4 = 0;
}
if(K1 == 1 && KEY1 == 1)
{
led_init(1);
P2 =0X1F;
Set_74HC138(4);
{
P0 = 0xFF;
delay(100);
P0 = 0X00;
delay(100);
}
}
if(K2 == 0)
{
KEY2 = 1;
KEY1 = 0;
KEY3 = 0;
KEY4 = 0;
}
if(K2 == 1 && KEY2 == 1)
{
led_init(2);
P2 =0X1F;
Set_74HC138(4);
{
P0 = table1[z];
z++;
delay(110);
if(z==8) z=0;
}
}
if(K3 == 0)
{
KEY3 = 1;
KEY1 = 0;
KEY2 = 0;
KEY4 = 0;
}
if(K3 == 1 && KEY3 == 1)
{
led_init(3);
P2 =0X1F;
Set_74HC138(4);
{
P0 = table2[l];l++;
delay(110);
if(l==7) l =0;
}
}
if(K4 == 0)
{
KEY4 = 1;
KEY1 = 0;
KEY3 = 0;
KEY2 = 0;
}
if(K4 == 1 && KEY4 == 1)
{
P0 = 0XFF;
P2 = P2 & 0X1F | 0X80;
P2 &= 0X1F;
P0 = 0X01;
P2 = P2 & 0X1F | 0XC0;
P2 &= 0X1F;
P0 = 0X99;
P2 = P2 & 0X1F | 0XE0;
P2 &= 0X1F;
}
}
}

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单片机按键控制流水灯的4个状态 源程序

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单片机按键控制流水灯的4个状态源程序