"/ / nixie tube data port P0, nixie tube control port P2
#include
#include
#includePACe.h》
#include
#include
#definecodePROGMEM
#defineucharunsignedchar
#defineuintunsignedint
codeconstucharLED_ 7［16］={0x28，0x7E，0xA2，0x62，0x74，0x61，0x21，0x7A，0x20，0x60，0xff};// commonof+
codeconstucharposition［8］={0x7f，0xbf，0xdf，0xef，0xf7，0xfb，0xfd，0xfe};
ucharTIme［4］;// Time count
volaTIleuchardisp_ buff［8］;// Display buffer
volaTIleucharTIme_ count=0;
volatileucharpoint_ on=0;
volatileucharposit=0;
volatileuchartime_ 10ms_ ok=0;
voidtime_ to_ dispbuff（void）;
voidtime1_ init（void）;
voidtime0_ init（void）;
voiddisplay（void）;
intmain（void）
{
PORTA=0xff;
DDRA=0xff;
PORTC=0xff;
DDRC=0xff;
time［0］=00;// 1/10sec
time［1］=30;// sec
time［2］=59;// minute
time［3］=23;// hour
time_ to_ dispbuff（）;
time1_ init（）;
sei（）;
while（1）
{
if（time_ 10ms_ ok）
{
time_ 10ms_ ok=0;
if（++time［0］》=100）
{
time［0］=0;
point_ on=~point_ on;
if（++time［1］》=60）
{
time［1］=0;
if（++time［2］》=60）
{
time［2］=0;
if（++time［3］》=24）
{
time［3］=0;
}
}
}
}
time_ to_ dispbuff（）;
}
}
}
voidtime0_ init（void）
{
TCCR0=0x05;
TCNT0=0xea;
TIFR|=0x02;
TIMSK|=0x02;
}
voidtime1_ init（void）
{
TCCR1A=0x00;
TCCR1B=0x01;
TCNT1=0xa99a;
//TCNT1H=0xa9;
//TCNT1L=0x9a;
TIFR|=0x80;
TIMSK|=0x80;
}
SIGNAL（SIG_ OVERFLOW1）
{
TCNT1=0xa99a;
display（）;
if（++time_ count》=5）
{
time_ 10ms_ ok=1;
time_ count=0;
}
}
voiddisplay（void）
{
PORTC=0xff;
PORTA=pgm_ read_ byte（&led_ 7［disp_ buff［posit］］）;
if（point_ on&&（（posit==2）||（posit==4）||（posit==6）））PORTA&=0x7f;
PORTC=pgm_ read_ byte（&position［posit］）;
if（++posit》=8）posit=0;
}
voidtime_ to_ dispbuff（void）
{
uchari，j=0;
for（i=0; i《=3; i++）
{
disp_ buff［j++］=time［i］%10;
disp_ buff［j++］=time［i］/10;
}
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