51单片机外部中断定时器0 定时器1 三个无法正常工作 -

/*预处理命令*/
#include<reg52.h> //包含单片机寄存器的头文件
#include<intrins.h> //包含_nop_()函数定义的头文件
#define uchar unsigned char
#define uint unsigned int
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
sbit LED1 = P1^0; //定义LED灯，通过LED显示调光效果
sbit LED2 = P1^1; //用来对比PWM
sbit LED3 = P1^2;
sbit IRIN= P3^2; //红外接收器数据线
sbit rs=P0^7;
sbit rw=P0^6;
sbit lcden=P0^5;
unsigned char time; //定义周期该数字X基准定时时间如果是10 则占空比是10 x 0.01ms /1ms
void delay(unsigned char x) ;
void delay_ms(uint z);
char code dis []={"Countdown set:"};
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,
0xf8,0x80,0x90};
uchar IRCOM[7];
uchar count,aa,sec=59,min,hour,ss,sg,ms,mg,hs,hg;
//以下是1602程序
void write_com(uchar com)
{
rs=0;
lcden=0;
P2=com;
delay_ms(5);
lcden=1;
delay_ms(5);
lcden=0;
}
void write_date(uchar date)
{
rs=1;
lcden=0;
P2=date;
delay_ms(5);
lcden=1;
delay_ms(5);
lcden=0;
}
void lcd_init()
{
rw=0;
lcden=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
}
void write_fm(uchar add,uchar data1,uchar data2)
{
write_com(0x80+0x40+add);
write_date(0x30+data1);
write_date(0x30+data2);
}
//1602程序到此结束
void Countup() //设置关断时间
{
if(min == 60)
{
min = 0;
hour++;
if(hour == 24)
{
hour =0;
}
}
}
void init()
{
IRIN=1; //红外接收器数据初始化为高电平
EX0 = 1; //使能 INT0 外部中断
IT0 = 1; //触发方式为脉冲负边沿触发相当于IT0=1;
TMOD =0x11; //定时器设置 0.01ms in 12M crystal
TH0=0xff;
TL0=0xa4; //定时器0定时0.01mS
TH1 = (65535-50000)/256;
TL1 = (65535-50000)%256; //定时器1定时50mS
ET0 = 1;
ET1 = 1; //开启定时器中断
TR0 = 1;
TR1 = 0; //定时器1暂不开启
EA =1; //允许总中断中断,
}
/*******************************************************************/
void main()
{
char i;
time = 10; // 时间可以调整这个是10调整 8位PWM就是256步
init();
lcd_init();
write_com(0x80); //显示初始界面
i=0;
while (dis [i]!='\0')
{
write_date(dis [i]);
i++;
}
write_fm(4,hs,hg); //显示初始时间
write_date(':');
write_fm(7,ms,mg);
write_date(':');
write_fm(10,ss,sg);
while(!TR1); //等待红外启动
while(TR1)
{
write_fm(0,IRCOM[5],IRCOM[6]); //显示红外键值
Countup();
ss = sec/10;
sg = sec%10;
ms = min/10;
mg = min%10;
hs = hour/10;
hg = hour%10;
write_fm(4,hs,hg);
write_date(':');
write_fm(7,ms,mg);
write_date(':');
write_fm(10,ss,sg); //1602显示时间00:00:59
if(sec == 0 && min == 0 && hour == 0)
{
TR1 = 0; //停止计时
LED1 = 1; //PWM灯关闭
}
}
}
/**********************************************************/
void IR_IN() interrupt 0 using 0 //外部中断触发，接收到红外信号
{
unsigned char j,k,N=0;
unsigned char q=0;
EX0 = 0;
delay(15);
if (IRIN==1)
{
EX0 =1;
return;
}
//确认IR信号出现
while (!IRIN) //等IR变为高电平，跳过9ms的前导低电平信号。
delay(1);
for (j=0;j<4;j++) //收集四组数据
{
for (k=0;k<8;k++) //每组数据有8位
{
while (IRIN) //等 IR 变为低电平，跳过4.5ms的前导高电平信号。
{delay(1);}
while (!IRIN) //等 IR 变为高电平
delay(1);
while (IRIN) //计算IR高电平时长
{
delay(1);
N++;
if (N>=30) //超时数据接收完毕
{
EX0=1;
return;
} //0.14ms计数过长自动离开。
} //高电平计数完毕
IRCOM[j]=IRCOM[j] >> 1; //数据最高位补“0” 位操作
if(N>=8)
{
IRCOM[j] = IRCOM[j] | 0x80; //数据最高位补“1”
}
N=0;
}
}
if(IRCOM[2]!=~IRCOM[3])
{
EX0=1;
return;
}
IRCOM[5]=IRCOM[2] & 0x0F; //取键码的低四位
IRCOM[6]=IRCOM[2] >> 4; //右移4次，高四位变为低四位
if(IRCOM[5]>9)
{
IRCOM[5]=IRCOM[5]+0x37;
}
else
IRCOM[5]=IRCOM[5]+0x30;
if(IRCOM[6]>9)
{
IRCOM[6]=IRCOM[6]+0x37;
}
else
IRCOM[6]=IRCOM[6]+0x30;
q= (((IRCOM[6]&0x0f)<<4) + (IRCOM[5]&0x0f));
switch(q) //判断按键键码值
{
case 0x16:
time = 99;break; //串口发送0
case 0x03:
time = 10;break; //串口发送01
case 0x18:
min = min+2;break; //串口发送02 设置关断时间
case 0x55:
time = 30;break; //串口发送03
case 0x08:
ET1=1;TR1=1;break; //串口发送04 计时开始
case 0x13:
time = 50;break; //串口发送05
case 0x51:
LED1 = 1;break; //串口发送06 关断LED1；
case 0x42:
time = 70;break; //串口发送07
case 0x52:
LED1 = 0;break; //串口发送08 开启LED1
case 0x41:
time = 90;break; //串口发送09
default :
break;
}
EX0 = 1;
}
//定时器0中断函数
void tim0(void) interrupt 1 using 1
{
TH0=0xff;
TL0=0xa4; //设置中断时间0.01mS
count++;
if(count<=time)
{
LED1 = 0;
}
else
{
LED1 =1;
}
if(count>=100) //周期1ms
{
count =0;
}
}
void timer3() interrupt 3 using 3
{
TH1 = (65535-50000)/256;
TL1 = (65535-50000)%256;
aa++;
if(aa == 20)
{
aa = 0;
sec--;
if(sec == 0)
{
sec = 59;
min--;
if(min == 0)
{
min = 59;
hour--;
if(hour == 0)
{
hour =0;
}
}
}
}
}
/***************延时函数*****************************/
void delay(unsigned char x) //x*0.14MS
{
unsigned char i;
while(x--)
{
for (i = 0; i<13; i++) {}
}
}
void delay_ms(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}

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