[Output DC voltage of digital on DigitalDiscovery]

Hi,

With Waveforms, I can output the DC voltage of the digital signals, i.e. 3.3V on DigitalDiscovery.

But with a python script, I use :

# set voltage to 3.3 V (DD)
dwf.FDwfAnalogIOChannelNodeSet(hdwf, 0, 0, c_double(3.3))
# enable positive supply
dwf.FDwfAnalogIOEnableSet(hdwf, 1) # enable VIO

 

But, I cannot the get the 3.3V voltage reference. What is missing ?

Thanks, BRgds,

Laurent