use AD7173 lib

 with #define Dx 1 -> delay(Dx);
also use enable_adc_channel(CH0_REG, true, AIN0, AIN1);
not use AD7173.enable_channel(0, true, AIN0, AIN1); from AD7173 lib
not work from AIN8 .. AIN15
AD7173.set_data_mode(CONTINUOUS_CONVERSION_MODE);   and AD7173.set_data_mode(CONTINUOUS_READ_MODE);   ok