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#include<reg52.h>
#define unchar unsigned int
sbit D1=P2^0; //將D1位定義為P2.0引腳
sbit D2=P2^1; //將D2位定義為P2.1引腳
sbit D3=P2^2;
sbit D4=P2^3;
sbit D5=P2^4;
sbit A1=P2^2;
sbit B1=P2^3;
sbit C1=P2^4;
sbit key1=P1^7;
sbit key2=P1^6;
sbit key3=P1^5;
sbit key4=P1^4;
sbit key5=P3^2;
sbit key6=P3^3;
sbit pwm=P3^7;
sbit xh=P2^7;
void StartTime1(void);
unchar bai,shi,h1,ge,qian,bai1,qian1,ge1,shi1;
unchar k,h,b,e,e1,g,w;
unchar code table[]={0x3f,0X06,0x5b,0x4f,0x66,0X6d,0x7d,0x07,0x7f,0x6f};
void display(unchar,unchar,unchar,unchar);
void display1(int a);
void delay(unchar);
void tiaopin(void);
void StartTime0(void);
void main(void)
{EA=1;//開總中斷
IT0=1;
TR0=0;
TR1=0;
A1=0;
B1=0;
C1=0;
pwm=0;
h=1000;
StartTime0();
EX0=1;
IT1=1;
EX1=1;
while(1)
{display(qian,bai,shi,ge);
display1(e1);
}
}
void display(unchar qian,unchar bai,unchar shi,unchar ge)//頻率顯示
{
A1=0,B1=0,C1=0;
P0=table[ge];
delay(5);
P0=0xff;
A1=1,B1=0,C1=0;
P0=table[shi];
delay(5);
P0=0xff;
A1=0,B1=1,C1=0;
P0=table[bai];
delay(5);
P0=0xff;
A1=1,B1=1,C1=0;
P0=table[qian];
delay(5);
P0=0xff;
}
void display1(int e1)
{ w=e1;
bai1=w/100;
shi1=w%100/10;
ge1=w%10;
A1=0,B1=0,C1=1;
P0=table[ge1];
delay(5);
P0=0xff;
A1=1,B1=0,C1=1;
P0=table[shi1];
delay(5);
P0=0xff;
A1=0,B1=1,C1=1;
P0=table[bai1];
delay(5);
P0=0xff;
A1=1,B1=1,C1=1;
P0=table[qian1];
delay(5);
P0=0xff;
}
void StartTime0(void)
{TMOD=0x12; //使用定時器T0,工作方式1
ET0=1;
ET1=1;
PT1=1;
}
void int1(void) interrupt 2
{e++;
h=1000;
TR0=1;
TR1=1;
delay(100);
while(!key6);
}
void int0(void) interrupt 0
{
TR0=0;
TR1=0;
tiaopin();//調(diào)頻
b=100*bai+10*shi+ge;
if(b>18)
{h=23364/b;
TL0=236;
TH0=236; //初值
TR0=1;
}
else
{TH1=(65536-1000)/256; //1毫秒初值,h=1000;
TL1=(65536-1000)%256;
h=500/b;
TR1=1;
}
}
void Time1(void) interrupt 3
{ TH1=(65536-1000)/256; //1毫秒初值,h=1000;
TL1=(65536-1000)%256;
k++;
if(k==h)
{pwm=!pwm;
e1=e;
e=0;
k=0;}
}
void Time0(void) interrupt 1
{k++;
if(k==h)
{pwm=!pwm;
k=0;}
}
void tiaopin()//調(diào)節(jié)方波頻率
{TR0=0;
TR1=0;
while(1)
{display(qian,bai,shi,ge);
if(key1==0)
{delay(5);
if(key1==0)
{bai++;
while(!key1);}
if(bai==10)
bai=0;}
if(key2==0)
{delay(1);
if(key2==0)
{shi++;
while(!key2);}
if(shi==10)
shi=0;}
if(key3==0)
{delay(1);
if(key3==0)
{ge++;
while(!key3);}
if(ge==10)
ge=0;}
if(key4==0)
delay(1);
if(key4==0)
{delay(100);
if(key4==0)
break;}
}
}
void delay(unchar t)//延時函數(shù)
{unchar i,j;
for(i=t;i>0;i--)
for(j=5;j>0;j--);
}
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