A kódba nem írtam magyarázatokat, azt megtette más. 
#include <util/delay.h>
#define RED_ON
() PORTB |=
(1<<PB4
) #define RED_OFF
() PORTB &= ~
(1<<PB4
)
#define YEL_ON
() PORTB |=
(1<<PB3
) #define YEL_OFF
() PORTB &= ~
(1<<PB3
)
#define GRN_ON
() PORTB |=
(1<<PB5
) #define GRN_OFF
() PORTB &= ~
(1<<PB5
) #define G_RED_ON
() PORTB |=
(1<<PB1
) #define G_RED_OFF
() PORTB &= ~
(1<<PB1
) #define G_GRN_ON
() PORTB |=
(1<<PB2
) #define G_GRN_OFF
() PORTB &= ~
(1<<PB2
)
void m_delay_10ms(unsigned long val) {
while(val--) _delay_ms(10);
}
void m_delay_fl(unsigned long val2) {
while(val2--){
G_GRN_OFF();
m_delay_10ms(5);
G_GRN_ON();
m_delay_10ms(5);
}
}
int main(void) {
uint8_t state;
DDRB =
(1<<PINB1
)|
(1<<PINB2
)|
(1<<PINB3
)|
(1<<PINB4
)|
(1<<PINB5
);
DDRB &= ~(1 << PB0);
PORTB |= (1 << PB0);
state = 0;
while(1) {
switch(state) {
case 0: RED_OFF();
YEL_OFF();
GRN_ON();
G_RED_ON();
G_GRN_OFF();
while(PINB & (1 << PB0)){}
m_delay_10ms(200);
state++;
break;
case 1: YEL_ON();
GRN_OFF();
m_delay_10ms(25);
state++;
break;
case 2: YEL_OFF();
RED_ON();
case 3: G_GRN_ON();
G_RED_OFF();
m_delay_10ms(110);
m_delay_fl(4);
state++;
break;
case 4: YEL_ON();
G_RED_ON();
G_GRN_OFF();
m_delay_10ms(25);
state++;
break;
default: state = 0;
}
}
return 0;
}
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