Edison AnalogInOutSerial Arduino example not working

I am trying to run the AnalogInOutSerial example from the Arduino IDE on the Edison Arduino Expansion board but all the time I get an ADC reading of 130 even when connecting the ADC0 input to ground or to 3.3V.

I am trying to figure it now if there is a hardware problem on my expension board or a bug in the Arduino library.

Is there any special jumper setting on the Arduino Expension board that I might be missing?

Can somebody confirm me that the AnalogInOutSerial is running ok on the Edison Arduino board?

Thanks