int32_t ADS126xReadData(uint8_t NumBytes, uint8_t DataByteStartNum)
{
    assert((4 == NumBytes) || (5 == NumBytes) || (6 == NumBytes));  // Aborts program if FALSE
    assert((0 == DataByteStartNum) || (1 == DataByteStartNum));     // Aborts program if FALSE

    uint8_t ADC_Bytes[6];
    int32_t ADC_Data_Only;
    uint8_t Checksum = 0x9B;
    uint8_t Sum = 0;

    while (1)
    {
        ADS126xXferByte(RDATA1);
        for (int i = 0; i < NumBytes; ++i)
            ADC_Bytes[i] = ADS126xXferByte(0);
        if (ADC_Bytes[0] >= 0x40 && ADC_Bytes[0] <= 0x41)
        {
            for (int i = 1; i < NumBytes-1; ++i)
            {
                Sum += ADC_Bytes[i];
            }
            Sum += Checksum;
            if ((Sum & 0xFF )!= ADC_Bytes[NumBytes - 1])
            {
               Sum = 0; 
               continue;
            }
            else
            {
                ADC_Data_Only = ((int32_t)ADC_Bytes[DataByteStartNum + 0] << 24) |		//Data MSB
					((int32_t)ADC_Bytes[DataByteStartNum + 1] << 16) |
					((int32_t)ADC_Bytes[DataByteStartNum + 2] <<  8) |
					((int32_t)ADC_Bytes[DataByteStartNum + 3] <<  0);		//Data LSB
	//set_adc_CS(1);
                 break;
            }
        }
    }

    return ADC_Data_Only;
}