Re: [pyusb-users] Finally found: the installed library

[Wander L. C. <wan...@gm...>]

Hi Hermann,

Thanks for digging on this. I didn't have free time to update docs yet, but
will do.

2016-10-11 6:27 GMT-03:00 Hermann Hamann <her...@we...>:

> Hi,
> The use of the pyusb0 service is a bit troublesome, because you have to
> specify the desired library by hand.
> I always had the dream of automatically use the installed library.
> Well, here is how.
> You must know the Vid and Pid of your device. With that you can look up
> the registry for the installed service.
> If it is winusb you need not care.
> If it is pyusb0 then you get the device descriptor and extract the device
> name.
> With it you go to the driverstore and scan the filerepository directory
> for a directory file name
> that starts with the device name.
> Then you walk under this tree until you find a dll name.
> This is the installed library.
> Was not so hard.
> I want to thank Xiaofan for his encouraging advice to dig deeper in this
> registry thingens.
> Now there is no more any need to pick a wrong library.
>
>
>
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-- 
Best Regards,
Wander Lairson Costa