void init()
{
    //calib clock @ 8MHz
    uint8_t osccal_data = pgm_read_byte(CLK_CALIB_DATA);
    if (osccal_data != 0xff) OSCCAL = osccal_data;

    //adc
    a2dInit();

    fSnd = 0;
    fReset = 0;

    //port
    DDRB = 0xff;
    DDRD = 0xff;


    return;
}

void calib_adc(void)
{
    uint8_t i;
    uint16_t sval = 0;

    for (i=0; i<100; i++){
        sval += a2dConvert8bit(ADC_CH_ADC0);
    }

    adc_zero = sval / 100;
    //PRINT(" adczero = %x\n", adc_zero);
    wait = 303;

    return;
}