更新一個單個按鍵控制多種流水燈狀態的教程,希望能幫助到大家~
所需元器件如下:
STC89C52RC芯片 *1
10K電阻 *2
100Ω電阻 *8
10uF 電解電容 *1
22pF 瓷片電容 *2
12MHz晶振 *1
按鍵 *2
LED燈 *8
代碼如下:
#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
#define LED P1
sbit KEY=P3^0;
unsigned char code led_1[8]=
{0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//定義第一種流水燈狀態
unsigned char code led_2[8]=
{0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};//定義第二種流水燈狀態
unsigned char code led_3[5]=
{0x7e,0xbd,0xdb,0xe7,0xff};//定義第三種流水燈狀態
unsigned char code led_4[5]=
{0xe7,0xc3,0x81,0x00,0xff};//定義第四種流水燈狀態
unsigned int j,z; //定義兩個無符號整型變量
void delay(uint x) //延時
{
uchar i;
while(x--)
{
for(i=0;i<100;i++);
}
}
void main()
{
j=1; //初始化爲開機第一種流水燈狀態
while(1)
{
if(KEY==0)
{
delay(10);
if(KEY==0)
{
j++;
delay(10);
if(j>4)
j=1;
}
}
switch(j)
{
case 1: //第一種流水燈狀態
for(z=0;z<8;z++)
{
LED=led_1[z];
delay(150);
if(KEY==0)
{
delay(10);
if(KEY==0)
{
j++;
delay(10);
if(j>4)
j=1;
}
}
}
break;
case 2: //第二種流水燈狀態
for(z=0;z<8;z++)
{
LED=led_2[z];
delay(150);
if(KEY==0)
{
delay(10);
if(KEY==0)
{
j++;
delay(10);
if(j>4)
j=1;
}
}
}
break;
case 3: //第三種流水燈狀態
for(z=0;z<5;z++)
{
LED=led_3[z];
delay(150);
if(KEY==0)
{
delay(10);
if(KEY==0)
{
j++;
delay(10);
if(j>4)
j=1;
}
}
}
break;
case 4: //第四種流水燈狀態
for(z=0;z<5;z++)
{
LED=led_4[z];
delay(150);
if(KEY==0)
{
delay(10);
if(KEY==0)
{
j++;
delay(10);
if(j>4)
j=1;
}
}
}
break;
}
}
}
仿真電路圖如下: