80C51单片机电子钟程序
遇到了一个重要的51单片机程序，但是看不大懂。有哪位高手能讲解一下吗？void datadispProc(void);
uchar disp_data[8]={0};
uchar TimeIntCnt;
uchar Timehms[3]={20,59,50};
uchar Timerhm[2]={21,5};
bit secflag = 0;
uchar func = 0;
void main()
{
uchar i,j,tmpdata;
P2 = 0xff; //关闭所有数码管
P1 = 0x00;
//数码管测试
for( i = 0; i < 1; i++)
{
tmpdata = 0xfe;
for( j = 0; j < 6; j++)
{
P2 = tmpdata;
P1 = 0xff;
delayms(100);
tmpdata = _crol_(tmpdata, 1);
}
}
for( i = 0; i < 1; i++)
{
tmpdata = 0xdf;
for( j = 0; j < 6; j++)
{
P2 = tmpdata;
P1 = 0xff;
delayms(100);
tmpdata = _cror_(tmpdata, 1);
}
}
//定时/计数器初始化
TMOD = 0X10;
TH1 = 0X3C;
TL1 = 0XB0;
EA = 1;
ET1 = 1;
TR1 = 1;
datadispProc();
TimeIntCnt = 0;
while(1)
{
//按键处理程序
if(key1 == 0)
{
delayms(10);
if(key1 == 0)
{
if(func++ >= 4) func = 0;
while(key1 == 0);
}
}
//按键处理程序
else if(key2 == 0)
{
delayms(10);
if(key2 == 0)
{
switch(func)
{
case 1: Timehms[0]++; break;
case 2: Timehms[1]++; break;
case 3: Timerhm[0]++; break;
case 4: Timerhm[1]++; break;
default: func = func;
}
while(key2 == 0);
}
}
//按键处理程序
else if(key3 == 0)
{
delayms(10);
if(key3 == 0)
{
switch(func)
{
case 1: Timehms[0]--; break;
case 2: Timehms[1]--; break;
case 3: Timerhm[0]--; break;
case 4: Timerhm[1]--; break;
case 5: func =0 ; break;
default: func = func;
}
while(key3 == 0);
}
}
//显示程序设计调用
display();
}
}
//显示数据处理程序
void datadispProc(void)
{
if(func == 1 || func ==2 || func ==0)
{
disp_data[0] = Timehms[0]/10;
disp_data[1] = Timehms[0]%10;
disp_data[3] = Timehms[1]/10;
disp_data[4] = Timehms[1]%10;
disp_data[6] = Timehms[2]/10;
disp_data[7] = Timehms[2]%10;
disp_data[2] = 10;
disp_data[5] = 10;
if(func != 0)
{
if(secflag)
{
switch(func)
{
case 1:
{
disp_data[0]=10;
disp_data[1]=10;
}break;
case 2:
{
disp_data[3]=10;
disp_data[4]=10;
}break;
}
}
}
}
else if(func == 3 || func ==4 )
{
disp_data[0] = 11;
disp_data[1] = 11;
disp_data[3] = Timerhm[0]/10;
disp_data[4] = Timerhm[0]%10;
disp_data[6] = Timerhm[1]/10;
disp_data[7] = Timerhm[1]%10;
disp_data[5] = 10;
if(func != 0)
{
if(secflag)
{
switch(func)
{
case 3:
{
disp_data[3]=10;
disp_data[4]=10;
}break;
case 4:
{
disp_data[6]=10;
disp_data[7]=10;
}break;
}
}
}
}
}
//显示程序
void display(void)
{
uchar i;
uchar dis_digit;
dis_digit = 0x01;
for( i = 0; i < 8; i++)
{
P2 = dis_code[disp_data[i]]; //段码送P2口
P1 = dis_digit; //位码送P1口
delayms(1);
P1 = 0x00;
dis_digit = _crol_(dis_digit, 1); //位选通左移，下次选通下一位
}
}
//延时程序
void delayms(unsigned int ms) //延时子程序(晶振12M)
{
uchar i;
while(ms--)
{
for(i = 0; i < 120; i++);
}
}
//定时器中断函数
void Time1Ser(void) interrupt 3
{
TH1 = 0X3C;
TL1 = 0XB0;
if( TimeIntCnt++ >= 15)
{
secflag = ~secflag;
TimeIntCnt = 0;
if(Timehms[2]++ >=59)
{
Timehms[2] = 0;
if(Timehms[1]++ >=59)
{
Timehms[1] = 0;
if(Timehms[0]++ >=23)
{
Timehms[0] = 0;
}
}
}
//定时控制按键
if(key4 == 0)
{
if((Timehms[0] == Timerhm[0]) && (Timehms[1] == Timerhm[1]))
{
led = 0;
}
else
{
led = 1;
}
}
else
{
led = 1;
}
//调用显示数据处理程序
datadispProc();
}
}
