Running from WSL

[tolsadus]

Hello Karl,

Would it be possible to make it run from the WSL, or does it need to be done only directly from W10 ?

[KarlHlmgrn]

That is a good question I haven't tested it on anything other than W10. It could cause compatibility issues when trying to connect to the HID but I'm not quite sure. It would be really nice if you could test it and then send me the error codes if there are any.

[tolsadus]

Well it seems that it just doesn't find any devices, so...

➜  crypto-oled git:(main) ✗ python3.7 crypto-graphing.py 
No devices found, exiting.

I've been trying (also) to install the https://github.com/libusb/hidapi but without any success in W10. (see below) Much easier to do on Debian 👍

%systemroot%\SysWoW64\regsvr32 C:\path\to\x64\hidapi.dll

Gives the following

The module hidapi.dll was loaded but the entry-point DllRegisterServer was not found.
Make sure that hidapi.dll is a valid DLL or OCX file and then try again.

Would love to know how did you managed to do so? Even adding the .dll (the x86) directly in C:\Windows\System32 the python script you wrote can't load due to error 0xc1

[KarlHlmgrn]

Which keyboard do you use?

[tolsadus]

https://www.amazon.fr/gp/product/B07XLNX4ZN - SteelSeries Apex 7

[tolsadus]

If you have Apex Pro TKL or Apex 7 please give me the VID and PID which can be found in device manager and I will add it in the next version.

Ok just read that on the readme.

[KarlHlmgrn]

Please post them here and I will happily add it to the code!

[tolsadus]

Not sure however which PID should be used.

https://imgur.com/a/Y4Unuhr

(Top left = first one in the list
Top right = second
Bottom left = third
Bottom right = fourth)

[KarlHlmgrn]

I think it's the top one. I will commit an update with that VID and PID making Apex 7 compatible!

[KarlHlmgrn]

Test the new code I committed and see if it works.

[tolsadus]

Still No devices found, exiting. but that's not a surprise since lsusb doesn't return anything from the WSL. (maybe due to the virtualization that microsoft is doing?)

Let me see if I can find a way to load/add that hidapi library 👍

[KarlHlmgrn]

I'm so sorry you're having this problem, I am not quite experienced with WSL but I will gladly help you if you need further help!

[KarlHlmgrn]

Do you have hidapi.dll in the same directory as where you are running the code from?

[tolsadus]

Yeah no worries. I was trying to play around with it since I usually like it better to run stuff contained directly from the WSL. (more like safety measure?)

-- easyhid (Windows also needs hidapi.dll which you can fetch from: https://github.com/libusb/hidapi/releases)

How did you installed the .dll and .lib files on your machine? The latest release doesn't seem to work.

Yes, still nothing. (with x64 and x86)

OSError: cannot load library 'hidapi.dll': error 0x7e. Additionally, ctypes.util.find_library() did not manage to locate a library called 'hidapi.dll'

Only difference is if I just plain copy/paste the .ddl in system32, but I just get an error saying that the lib can't load due to error 0xc1

[KarlHlmgrn]

You don't have to install the .dll to System32 it just has to be in the same directory as you're running the script from.

[tolsadus]

PS C:\Users\tolsadus\Desktop\crypto-oled-main> ls


    Directory: C:\Users\tolsadus\Desktop\crypto-oled-main


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----         3/28/2021  12:51 AM                x64
d-----        11/24/2020   1:45 PM                x86
-a----         3/28/2021  11:23 AM           7609 crypto-graphing.py
-a----         3/27/2021  10:31 AM        1951812 get-pip.py
-a----        11/24/2020   1:45 PM          95744 hidapi.dll
-a----        11/24/2020   1:45 PM           5790 hidapi.lib
-a----        11/24/2020   1:45 PM        2912256 hidapi.pdb
-a----          3/8/2021  12:19 PM           1067 LICENSE
-a----          3/8/2021  12:19 PM         217276 OpenSans-Regular.ttf
-a----          3/8/2021  12:19 PM           1433 README.md

---

PS C:\Users\tolsadus\Desktop\crypto-oled-main> python -V
Python 3.9.2

PS C:\Users\tolsadus\Desktop\crypto-oled-main> pip list
Package         Version
--------------- ---------
certifi         2020.12.5
cffi            1.14.5
chardet         4.0.0
cycler          0.10.0
easyhid         0.0.10
hidapi          0.10.1
idna            2.10
keyboard        0.13.5
kiwisolver      1.3.1
matplotlib      3.4.0
numpy           1.20.1
Pillow          8.1.2
pip             21.0.1
pycparser       2.20
pyparsing       2.4.7
python-dateutil 2.8.1
pytz            2021.1
requests        2.25.1
six             1.15.0
urllib3         1.26.4
wheel           0.36.2

---

PS C:\Users\tolsadus\Desktop\crypto-oled-main> python .\crypto-graphing.py
Traceback (most recent call last):
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\easyhid\easyhid.py", line 53, in <module>
    hidapi = ffi.dlopen('hidapi.dll')
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 150, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 832, in _make_ffi_library
    backendlib = _load_backend_lib(backend, libname, flags)
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 827, in _load_backend_lib
    raise OSError(msg)
OSError: cannot load library 'hidapi.dll': error 0x7e.  Additionally, ctypes.util.find_library() did not manage to locate a library called 'hidapi.dll'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\tolsadus\Desktop\crypto-oled-main\crypto-graphing.py", line 5, in <module>
    from easyhid import Enumeration
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\easyhid\__init__.py", line 8, in <module>
    from easyhid.easyhid import *
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\easyhid\easyhid.py", line 55, in <module>
    hidapi = ffi.dlopen(ctypes.util.find_library('hidapi.dll'))
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 150, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 832, in _make_ffi_library
    backendlib = _load_backend_lib(backend, libname, flags)
  File "C:\Users\tolsadus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\cffi\api.py", line 821, in _load_backend_lib
    raise OSError("dlopen(None) cannot work on Windows for Python 3 "
OSError: dlopen(None) cannot work on Windows for Python 3 (see http://bugs.python.org/issue23606)```

Sorry I went to bed it was quite late on my timezone. That doesn't seems to work either?