单片机时钟实现闹钟功能

void main (void)

{

unsigned int i = 0;

LCD_Init();

LCD_Clear();

Init_INT0();

while(1)

{

LCD_Write_String(6,1,"clock");

if(flag2 == 1)

{

DelayMs(1);

SPK =! SPK;

Display();

flag2 = 0;

}

if(flag1 == 1)

{

for(i = 0; i<500; i++)

{

DelayMs(1);

SPK =! SPK;

}

flag1 = 0;

}

if(clockflag == 1&&hour == clock[0]&&minute == clock[1]&&second == 0)

{

for(i = 0; i<3000; i++)

{

DelayMs(1);

SPK =! SPK;

}

clockflag = 0;

}

time();

}

}

void time()

{

unsigned char num1;

static unsigned char temp = 0;

KeyPort = 0xf0;

if(KeyPressFlag == 1)

{

KeyPressFlag = 0;

num1 = KeyPro();

switch(num1)

{

case 0:hour++;if(hour == 24)hour = 0;

break;

case 1:hour--;if(hour == 255)hour = 23;

break;

case 2:minute++;if(minute == 60)minute = 0;

break;

case 3:minute--;if(minute == 255)minute = 59;

break;

case 4:

{

Init_Timer0();

IRcvStr(0xae,4,store,3);

hour = store[0];

minute = store[1];

second = store[2];

break;

}

case 5:

{

if(temp%2 == 0)

ET0 = 1;

else

ET0 = 0;

temp++;

break;

}

case 6:
hour = 0;minute = 0;second = 0; break;

case 7:

{

alarm();

}

default:break;

}

}

}

void alarm()

{

unsigned char num2;

unsigned char hour1 = 0;

unsigned char minute1 = 0;

LCD_Init();

LCD_Clear();

LCD_Write_String(0,0,"next alarm: ");

while(1)

{

LCD_Write_Char(11,0,clock[0]/10+'0');

LCD_Write_Char(12,0,clock[0]%10+'0');

LCD_Write_Char(13,0,':');

LCD_Write_Char(14,0,clock[1]/10+'0');

LCD_Write_Char(15,0,clock[1]%10+'0');

LCD_Write_String(0,1,"set alarm: ");

LCD_Write_Char(11,1,hour1/10+'0');

LCD_Write_Char(12,1,hour1%10+'0');

LCD_Write_Char(13,1,':');

LCD_Write_Char(14,1,minute1/10+'0');

LCD_Write_Char(15,1,minute1%10+'0');

KeyPort = 0xf0;

if(KeyPressFlag == 1)

{

KeyPressFlag = 0;

num2 = KeyPro();

switch(num2)

{

case 0:hour1++;if(hour1 == 24)hour1 = 0;

break;

case 1:hour1--;if(hour1 == 255)hour1 = 23;

break;

case 2:minute1++;if(minute1 == 60)minute1 = 0;

break;

case 3:minute1--;if(minute1 == 255)minute1 = 59;

break;

case 4:clock[0] = hour1;clock[1] = minute1;clockflag = 1;break;

case 5:LCD_Clear();return;

default:break;

}

}

}

}

void Display()

{

unsigned char h0,h1, m0,m1 ,s0,s1;

h0 = hour/10+48;

h1 = hour%10+48;

m0 = minute/10+48;

m1 = minute%10+48;

s0 = second/10+48;

s1 = second%10+48;

LCD_Write_Char(4,0,h0);

LCD_Write_Char(5,0,h1);

LCD_Write_Char(6,0,':');

LCD_Write_Char(7,0,m0);

LCD_Write_Char(8,0,m1);

LCD_Write_Char(9,0,':');

LCD_Write_Char(10,0,s0);

LCD_Write_Char(11,0,s1);

store[0] = hour;

store[1] = minute;

store[2] = second;

ISendStr(0xae,4,store,3);

}