int main(void) {
    UCSRB = (1 << RXEN) | (1 << TXEN); // enable receiver and transmitter
    //UCSRC = (1 << URSEL) | (1 << UCSZ1) | (1 << UCSZ0); // 8-bit size word, write to C register
    UCSRC = (1 << URSEL) | (1 << UCSZ1) | (1 << UCSZ0) | (1 << USBS); // 8-bit size word, write to C register
/*    UBRRL = 71; // baud rate = 9600, CPU frequency = 11.0592MHz
    UBRRH = (71 >> 8);*/
    UBRRL = 11; // baud rate = 57600, CPU frequency = 11.0592MHz
    UBRRH = (11 >> 8);

    ADCSRA = (1 << ADEN) | (1 << ADPS2) | (1 << ADPS1) | (1 << ADPS0);
    ADMUX = (1 << REFS0);

    ADCSRA |= (1 << ADSC); // first conversion
    while (ADCSRA & (1 << ADSC)); // first conversion

    while (1) {
        ADCSRA |= (1 << ADSC);
        while (ADCSRA & (1 << ADSC));

        unsigned int adc_value = ADCW;

        unsigned char lsb, msb;
        lsb = adc_value & 0xff;
        msb = (adc_value >> 8) & 0xff;

        unsigned char readout[2] = {msb, lsb};
        unsigned char crc = crc8_ETSIEN302307(readout, 2);
        unsigned char packet[3] = {msb, lsb, crc};
        unsigned char encoded[5] = {0};
        StuffData(packet, 3, encoded);

        for (unsigned char i = 0; i < 5; i++) {
            while ((UCSRA & (1 << UDRE)) == 0);
                UDR = encoded[i];
        }

//        _delay_ms(50);

/*        while ((UCSRA & (1 << UDRE)) == 0);
        UDR = msb;
        while ((UCSRA & (1 << UDRE)) == 0);
        UDR = lsb;*/
    }
}