void ADCSetup(){
    // AVR Butteryfly Board Info:
    // The Neg. Temp. Coeff. resistor (NTC)      is on ADC channel 0
    // The Board Edge Voltage Input Reading (VR) is on ADC channel 1
    // The Light Dependant Resistor (LDR)        is on ADC channel 2


    //Disable Digital Input Buffer on pins being used for analog input to save power
    //    using the Digital Input Disable Register
    DIDR0 |= 0b00000001; //disable PF0 (ADC0) digital input buffer


    //Select Voltage Reference, Set Left-Ship Option, Set Input Channel
    int refSel_2b=1;    //select avcc, change to 3 for 1.1V reference
    int adlar_1b=0;     //no need to left shift
    int muxSel_5b = XYZ;  //select ADC0 with single-ended conversion
    ADMUX = (refSel_2b << REFS0) + (adlar_1b<<ADLAR) + (muxSel_5b << MUX0);

    //enable adc and with interrupt disabled
    ADCSRA = (1<<ADEN) + (0 << ADSC) + (0 << ADATE) + (0 << ADIF) + (0<< ADIE) + (0 <<ADPS0);

    //Set auto conversion source
    //ADCSRB &= 0b11111000; //autoconversion (ADATAE) not set so trigger source is not used
}

//Call this function to start an ADC conversion
void ADCStartConversion(){
    ADCSRA |= 1 << ADSC; //this is automatically cleared
}


void ADCClearConversionFlag(){
ADCSRA |= (1<<ADIF); //all interrupt flags are cleared by writing a one
}

int ADCIsConversionCompleteFlagSet(){
  return(ADCSRA & (1<<ADIF));
}

// modify this command to return ADC, value.  Hint: you can access it by using the macro symbol ADC.  Note, if accessing the high and low bytes individually, access ADCL first then ADCH
uint16_t ADCGet(){
   YOU ARE MISSING SOMETHING HERE
}

int ADCAquire(){
    ADCClearConversionFlag();
    ADCStartConversion();
    while(! ADCIsConversionCompleteFlagSet() );
    return ADCGet();
}