Helpf for 2019.3 and a dll

Alberto Buffolino
 

Hi all,
I'm trying to port an old Braille display driver to 2019.3. I packaged it in .nvda-addon, and under 2019.2 it works. Then, updating to 2019.3, even if there is apparently no error in code, it suddenly works bad.
If I understood correctly, it seems that the DLL, loaded with windll.LoadLibrary, now returns always 0, even if serial port and baud are correct.
Do you have any idea?
You can find repo here:
https://github.com/ABuffEr/mb408sl-driver
Thanks a lot.
Alberto

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