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//實(shí)驗(yàn)現(xiàn)象：開(kāi)關(guān)按一次，停止流水，再按一次，繼續(xù)流水，連續(xù)按兩次，換一種方式流水
#include<reg51.h>
typedef unsigned char u8;
typedef unsigned int u16;
#define led P2
sbit k1=P3^1;
u8 code liushui[]={0x18,0x24,0x42,0x81,0x42,0x24,0x18};//第一種流水方式
u8 flag=0,k=0,j,rear;
u8 code liushui2[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01}; //第二種流水方式
u16 h=0;
void delay(u16 i)
{
while(i--);
}
void Timer0Init()
{
TMOD|=0X01;//選擇為定時(shí)器0模式，工作方式1，僅用TR0打開(kāi)啟動(dòng)。
TH0=0XFC; //給定時(shí)器賦初值，定時(shí)1ms
TL0=0X18;
ET0=1;//打開(kāi)定時(shí)器0中斷允許
EA=1;//打開(kāi)總中斷
TR0=1;//打開(kāi)定時(shí)器
}
void keypros()
{
Timer0Init();
if(k1==0)
{
if(TF0==1)
{
TF0=0;
TH0=0XFC;
TL0=0X18;
h++;
}
delay(1000); //消抖
if(k1==0)
{
flag=~flag;//讓led暫停
rear=~rear;//判斷是否之前已經(jīng)按下過(guò)開(kāi)關(guān)
}
while(!k1);
}
}
void Liushui()
{
rear=1;
j=0;
while(j<7&&flag==0)
{
led=liushui[j++];
delay(50000);
keypros();
k=j;
}
keypros();
if(flag==0&&rear!=1&&h>2000)//若兩次按下時(shí)間間隔大于兩秒，則流水先暫停，再繼續(xù)
{
while(k<7)
{
led=liushui[k++];
delay(50000);
}
}
else if(flag==0&&rear!=1&&h<=2000)//若兩次按下時(shí)間間隔小于兩秒，則為第二種流水
{
u8 q;
h=0;
for(q=0;q<8;q++)
{
led=liushui2[q];
delay(50000);
}
for(q=7;q>=0;q--)
{
led=liushui2[q];
delay(50000);
}
}
}
void main()
{
while(1)
{
Liushui();
}
}
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