void led_on()
{
	//turn on led
}

void twi_start()
{
    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTA);

    while (!(TWCR & (1 << TWINT)));
}

void twi_stop()
{
    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);

    while (!(TWCR & (1 << TWSTO)));
}

void twi_write(uint8_t byte)
{
    TWDR = byte;

    TWCR = (1 << TWINT) | (1 << TWEN);

    while (!(TWCR & (1 << TWINT)));
}

void twi_write_byte(uint8_t byte)
{
    twi_start();
    twi_write(0x4E);

	//if (TWSR & 0x18) {
	//	led_on();
	//} // it works as expected

    twi_write(byte);

	led_on(); // this is never reached

    twi_stop();
}