#define F_CPU 1000000UL
#include <stdint.h>
#include <avr/io.h>
#include <util/delay.h>

/*
// f=20MHz -> T=0,05 µs
uint8_t T0H = 6;  // == 0.3  µs ~ 0.4 µs (+- 150ns) == [0.25, 0.55] µs
uint8_t T1H = 14; // == 0.7  µs ~ 0.8 µs (+- 150ns) == [0.65, 0.95] µs
uint8_t T0L = 15; // == 0.75 µs ~ 0.85µs (+- 150ns) == [0.70, 1.00] µs
uint8_t T1L = 8;  // == 0.35 µs ~ 0.45µs (+- 150ns) == [0.30, 0.60] µs
uint8_t RES = 51; //  > 50   µs
*/

#define wait6 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
#define wait8 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
#define wait14 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
#define wait15 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")

inline void writeZero() {
	PORTB = 1;
	wait6;
	PORTB = 0;
	wait15;
}

inline void writeOne() {
	PORTB = 1;
	wait14;
	PORTB = 0;
	wait8;
}

int  main2() {
	DDRB = 1; // PORT C0 output
	
	do{
		writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();
		writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();writeZero();
		writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();writeOne();
		_delay_ms(1);
	}while(1);
}

int main( void )
{
    DDRC |= (1 << PC0);

    while(1) {
        PORTC ^= (1 << PC0);
        _delay_ms(1000);
    }
    return 0;
}