Testee

I'm using the AD2 python sample "Digital_I2C_Spy.py" to monitor I2C activity. I don't see documentation in the SDK for FDwfDigitalI2cSpyStart or FDwfDigitalI2cSpyStatus. Has it just not been added to the SDK yet? (https://digilent.com/reference/software/waveforms/waveforms-sdk/reference-manual) The spy status function includes "iNAK"; How should the iNak value be interpreted? (Does it allow us to differentiate between ACK/NAK? What do negative numbers mean?) Thanks, Test-EE