#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uint pp;
char num=2,aa=0,bb=0;
sbit DT=P1^2; //EN1
sbit ZF=P1^1; //IN1
sbit pwm=P1^0; //EN2
sbit s1=P3^4;
sbit s2=P3^5;
sbit s3=P3^6;
sbit s4=P3^7;
sbit dula=P2^6;
sbit wela=P2^7;
unsigned char code table[]=
{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,
0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
void delay_ms(uchar z)
{
uchar i,j;
for(i=z;i>0;i--)
{
for(j=110;j>0;j--);
}
}
void keyscan()
{
if(s1==1) //加速
{
delay_ms(5);
if(s1==1)
{
num++;
if(num==10)
num=9;
while(s1);
}
}
if(s2==1) //減速
{
delay_ms(5);
if(s2==1)
{
num--;
if(num==-1)
num=0;
while(s2);
}
}
if(s3==3) //暫停和轉
{
delay_ms(5);
if(s3==3)
{
if(aa==0)
{
DT=1;
num=2;
aa=1;
while(s3);
}
else
{
DT=0; //EN=0
num=2;
aa=0;
while(s3);
}
}
}
if(s4==1)
{
delay_ms(5);
if(s4==1)
{
if(bb==0)
{
ZF=~ZF; //IN1=0 1 0 1 0 1
pwm=~pwm; //IN2=1 0 1
bb=1;
num=9-num;
while(s4);
}
else
{
ZF=~ZF;
pwm=~pwm;
bb=0;
num=9-num;
while(s4);
}
}
}
}
void display(a)
{
dula=0;
P0=table[a];
dula=1;
dula=0;
wela=0;
P0=0xfe;
wela=1;
wela=0;
}
void init()
{
TMOD=0x01;
TR0=1;
TH0=(65536-92)/256;
TL0=(65536-92)%256;
ET0=1;
EA=1;
DT=0;
ZF=0;
pwm=0;
}
void main()
{
init();
while(1)
{
keyscan();
if((num!=0)&&(num!=9))
{
if(pp<=num)
pwm=1;
else
pwm=0;
if(pp>=9)
pp=0;
}
else if(num==0)
pwm=0;
else
pwm=1;
display(num);
}
}
void time0() interrupt 1
{
TH0=(65536-92)/256;
TL0=(65536-92)%256;
pp++;
}
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