analog discovery 3 Waveforms SDK throwing errors with static supply tests

[gabagool]

Hi,

I'm trying to write a test application for the Analog Discovery 3 which utilises the DIO channels. From my understanding, the static.py file contains the library functions for this, and also the test_static-supplies.py file exists for testing purposes. When I run the test_static-supplies.py test file, it returns the following once reaching here:

# set the state of every DIO channel
static.set_state(device_data, index, not(mask & pow(2, index)))

and the error:

Exception has occurred: TypeError
unsupported operand type(s) for &=: 'c_ushort' and 'int'
  File "C:\Program Files (x86)\Digilent\WaveFormsSDK\inc\WF_SDK\samples\test_static-supplies.py", line 36, in <module>
    static.set_state(device_data, index, not(mask & pow(2, index)))
TypeError: unsupported operand type(s) for &=: 'c_ushort' and 'int'

 

From the library side, it seems to be complaining due to this in the set_state function:
 

    # set bit in mask
    if value == True:
        mask |= __rotate_left__(1, channel, data.count)
    else:
        bits = pow(2, data.count) - 2
        mask &= __rotate_left__(bits, channel, data.count)

I've tried casting mask to a uint16_t, an int, and an short but still receive the same result (or variations of it complaining about unsupported operand types).

 

Am I doing something wrong here?

Edited January 12 by gabagool
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[gabagool]

Loosely related, but is it possible the SDK has not been updated for Analog Discovery 3 devices? I've started to try use the library functions directly, and trying to get the device name with:

dwf.FDwfEnum(c_int(0), byref(numDevices))
for iDevice in range(0, numDevices.value):
    dwf.FDwfEnumDeviceName(c_int(iDevice), devicename)
    print("Device: " + str(iDevice+1)+" : \t" + str(devicename.value))

returns:

Device: 1 :     b'Analog Discovery 3'

 

Whereas with the SDK:

device_data = device.open()
print("Device name: " + device_data.name + "\n")

returns and empty:

Device name: 

 

Following into the open function of device.py I see that the Discovery 3 is not listed in the constants module which seems to come from "import dwfconstants as constants":

    device_names = [("Analog Discovery", constants.devidDiscovery), ("Analog Discovery 2", constants.devidDiscovery2),
                    ("Analog Discovery Studio", constants.devidDiscovery2), ("Digital Discovery", constants.devidDDiscovery),
                    ("Analog Discovery Pro 3X50", constants.devidADP3X50), ("Analog Discovery Pro 5250", constants.devidADP5250)]

 

[attila]

Hi @gabagool

The mentioned wrapper is not maintained at the moment.
Use the WF SDK/ samples/ py/..

[gabagool]

Thanks @attila. Are there plans to update the library for the Analog Discovery 3 any time soon?

[artvvb]

There are no plans at the moment to update GitHub sources and the getting started guide on reference, but it's on our radar. In the meantime, as Attila mentioned, please refer to the Python samples that come in the WaveForms installer - they're comprehensive and actively maintained.