This is a atmega128 source to make a clock using the timer interrupt. I want to

Question

This is a atmega128 source to make a clock using the timer interrupt. I want to add source if i press switch (PIND==0x0FE&&PIND==0x0FD) then below program would be running .
#include<io.h> int position=0,BJT[4]={0xFE,0xFD,0xFB,0xF7}; int number=0,segment[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; int msec=0, sec=0, min=0; void main() { DDRA=0xFF; PORTA=0XFF; DDRB=0xFF; PORTB=0xFF; TCCR0=0x04; TIMSK=0x01; SREG=0x80; while(1){} } interrupt[TIM0_OVF]void timer0_ovf_isr() { TCNT0=0x06; PORTA=BJT[position]; if(position==0)number=sec%10; if(position==1)number=sec/10; if(position==2)number=min%10; if(postion==3)number=min/10; PORTB=segment[number]; position++; if(position>3)position=0; msec++; if(msec==1000) { msec=0; sec++; } if(sec==60) { sec=0; min++; } if(min==60)min=0; }

This is a atmega128 source to make a clock using the timer interrupt. I want to add source if i press switch (PIND==0x0FE&&PIND==0x0FD) then below program would be running .
#include<io.h> int position=0,BJT[4]={0xFE,0xFD,0xFB,0xF7}; int number=0,segment[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; int msec=0, sec=0, min=0; void main() { DDRA=0xFF; PORTA=0XFF; DDRB=0xFF; PORTB=0xFF; TCCR0=0x04; TIMSK=0x01; SREG=0x80; while(1){} } interrupt[TIM0_OVF]void timer0_ovf_isr() { TCNT0=0x06; PORTA=BJT[position]; if(position==0)number=sec%10; if(position==1)number=sec/10; if(position==2)number=min%10; if(postion==3)number=min/10; PORTB=segment[number]; position++; if(position>3)position=0; msec++; if(msec==1000) { msec=0; sec++; } if(sec==60) { sec=0; min++; } if(min==60)min=0; }

This is a atmega128 source to make a clock using the timer interrupt. I want to add source if i press switch (PIND==0x0FE&&PIND==0x0FD) then below program would be running .
#include<io.h> int position=0,BJT[4]={0xFE,0xFD,0xFB,0xF7}; int number=0,segment[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; int msec=0, sec=0, min=0; void main() { DDRA=0xFF; PORTA=0XFF; DDRB=0xFF; PORTB=0xFF; TCCR0=0x04; TIMSK=0x01; SREG=0x80; while(1){} } interrupt[TIM0_OVF]void timer0_ovf_isr() { TCNT0=0x06; PORTA=BJT[position]; if(position==0)number=sec%10; if(position==1)number=sec/10; if(position==2)number=min%10; if(postion==3)number=min/10; PORTB=segment[number]; position++; if(position>3)position=0; msec++; if(msec==1000) { msec=0; sec++; } if(sec==60) { sec=0; min++; } if(min==60)min=0; }

Explanation / Answer

int position=0,BJT[4]={0xFE,0xFD,0xFB,0xF7};

int number=0,segment[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

int msec=0, sec=0, min=0;

void main()

{

DDRA=0xFF;

PORTA=0XFF;

DDRB=0xFF;

PORTB=0xFF;

TCCR0=0x04;

TIMSK=0x01;

SREG=0x80;

while(1){}

}

interrupt[TIM0_OVF]void timer0_ovf_isr()

{

TCNT0=0x06;

PORTA=BJT[position];

if(position==0)number=sec%10;

if(position==1)number=sec/10;

if(position==2)number=min%10;

if(postion==3)number=min/10;

PORTB=segment[number];

position++;

if(position>3)position=0;

msec++;

if(msec==1000)

{

msec=0;

sec++;

}

if(sec==60)

{

sec=0;

min++;

}

if(min==60)min=0;

}

}

}

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