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#include
#include
#define uchar unsigned char
#define uint unsigned int
unsigned char num;
unsigned char miao;
unsigned char fen;
unsigned char const SEGtableD[]={0x3F,0x06,0x5B,0x4F,0x66, 0x6D,0x7D,0x07,0x7f,0x6f,0};
unsigned char const SEGtableW[]={0XFE,0xFD,0xFB,0xF7,0xEF, 0xDF,0xBF,0x7F};
unsigned char hour;
unsigned char minute;
unsigned char second;
unsigned char count;
unsigned char k=0;
void port_init(void)
{
PORTE = 0xFF;
DDRE = 0xFF;
PORTD = 0xFF;
DDRD = 0xFF;
}
unsigned char key_press() {
unsigned char j;
//DDRG|=0x0F;
//PORTG|=0x0F;
DDRG&=0XF0;
j=PING;
j=j&0X0F;
if(j==0X0F)
{
return 0;
}
else
{
return 1;
}
}
unsigned char key_scanf() {
unsigned char key;
//delay(0);
if(key_press())
{
key=PING;
key&=0X0F;
switch(key)
{
case 0X0E:
key=1;
break;
case 0X0D:
key=2;
break;
case 0x0B:
key=3;
break;
default: key=10;
//while(key_press());
}
else
{
key=10;
}
return key;
}
void timer0_init(void) {
TCCR0 = 0x00;
ASSR = 0x00;
TCNT0=0x06;
OCR0=0x7C;
TCCR0 = 0x3b;
}
void init_devices(void) {
CLI();
port_init();
timer0_init();
XDIV=0x00;
XMCRA=0x00;
MCUCR=0x00;
EICRA=0x00;
EICRB=0x00;
EIMSK=0X00;
TIMSK=0x02;
ETIMSK=0x00;
SEI();
}
unsigned char timer0_tick;
#pragma interrupt_handler TIMER0_comp_ISR:16
void TIMER0_comp_ISR(void)
{
TCNT0=0x06;
OCR0=0x7C;
timer0_tick++;
if(timer0_tick==10) {
timer0_tick=0;
num++;
if(num==1000)
{
num=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
}
}
}
}
}
void display(void)
{unsigned char l;
for(l=0;l<500;l++)
{
PORTD=SEGtableD[num%10];
PORTE=0x7F;
delay(4);
PORTE=0xFF;
PORTD=SEGtableD[num/10];
PORTE=0xBF;
delay(4);
PORTE=0xFF;
PORTD=0x40;
delay(4);
PORTE=0xFF;
PORTD=SEGtableD[miao%10]; PORTE=0xEF;
delay(4);
PORTE=0xFF;
PORTD=SEGtableD[miao/10]; PORTE=0xF7;
delay(4);
PORTE=0xFF;
PORTD=0x40;
PORTE=0xFB;
delay(4);
PORTE=0xFF;
PORTD=SEGtableD[fen%10]; PORTE=0xFD;
delay(4);