AttributeError: module 'dwfconstants' has no attribute 'DwfWindowRectangular'

[tdeball]

Hi,

I am working through some of the Waveform SDK examples on an Analog Discovery 2. I can get all of the samples in the SDK/samples/py directory to work. Then i progressed to the "WaveForms-SDK-Getting-Started-PY-master" samples. None of these are working due to the error below. Any help would be appreciated!

 

XXX-MacBook-Pro-2:~ XXX$ /usr/bin/python3 /Users/XXX/Downloads/WaveForms-SDK-Getting-Started-PY-master/test_device_info.py
Traceback (most recent call last):
  File "/Users/XXX/Downloads/WaveForms-SDK-Getting-Started-PY-master/test_device_info.py", line 1, in <module>
    from WF_SDK import device, error       # import instruments
  File "/Users/XXX/Downloads/WaveForms-SDK-Getting-Started-PY-master/WF_SDK/__init__.py", line 15, in <module>
    from WF_SDK import tools
  File "/Users/XXX/Downloads/WaveForms-SDK-Getting-Started-PY-master/WF_SDK/tools.py", line 29, in <module>
    class window:
  File "/Users/XXX/Downloads/WaveForms-SDK-Getting-Started-PY-master/WF_SDK/tools.py", line 31, in window
    rectangular = constants.DwfWindowRectangular
AttributeError: module 'dwfconstants' has no attribute 'DwfWindowRectangular'

[attila]

Hi @tdeball

The demo on git probably requires newer WaveForms version, uses newly added features, see:

 

[tdeball]

That did it! The newer version of dwfconstants.py defines 'DwfWindowRectangular'.

Thank you!

[R Hari Chandana]

Hi Attila,

I am tring to work on something related to the Waveforms SDK. I got the issue as mentioned by @tdeball. Updated the Waveforms to the latest version, still facing the same issue. I will be glab receiving help in this regards.

D:\localWS\XXX\Testing\xxx\Testjig_UI> & d:/localWS/XXX/Testing/xxx/Testjig_UI/venv/Scripts/python.exe d:/localWS/XXX/Testing/xxx/Testjig_UI/ADwithPy.py
Traceback (most recent call last):
  File "d:\localWS\XXX\Testing\xxx\Testjig_UI\ADwithPy.py", line 22, in <module>
    from WF_SDK import device, scope, wavegen   # import instruments
  File "d:\localWS\XXX\Testing\xxx\Testjig_UI\WF_SDK\__init__.py", line 15, in <module>
    from WF_SDK import tools
  File "d:\localWS\XXX\Testing\xxx\Testjig_UI\WF_SDK\tools.py", line 29, in <module>
    class window:
  File "d:\localWS\XXX\Testing\xxx\Testjig_UI\WF_SDK\tools.py", line 31, in window
    rectangular = constants.DwfWindowRectangular
AttributeError: module 'dwfconstants' has no attribute 'DwfWindowRectangular'

Thanks in advance.

[attila]

Hi @R Hari Chandana

The DwfWindowRectangular should be in newer WF SDK/ samples/ py/ dwfconstants.py
Have verified this ? Are you using this in the project ? 

[R Hari Chandana]

Hi @attila,

I verified this. The atached file is the dwfconstants.py from the location "C:\Program Files (x86)\Digilent\WaveFormsSDK\samples\py\". couldn't find the declarations for window types.

Also, How to find the frequency of the analog data on scope - channel 1 using python? There is only definitions to read voltage level of the data. Please help me on this query too.

 

Thanks in advance

dwfconstants.py

[attila]

Hi @R Hari Chandana

It should be there if you install the newer sw version: dwfconstants.py

 

See the AnalogIn_FFT.py AnalogIn_Spectrum.py examples

 

[R Hari Chandana]

Hi @attila,

I verified the code for frequency measurement. That is amazing, thankful for the help.

About the first question, i updated Waveforms to the latest version, i couldn't find sources of window. 
 

Edited November 11, 2022 by R Hari Chandana
Missed to answer for both the questions

[attila]

Hi @R Hari Chandana

It should be there.

[R Hari Chandana]

Hi @attila,

No i couldn't find this declarations in that file. I added this part of declaration to the file as no other option is available and it worked

Thank you.