Unfortunately the device has no serial number :(
Kind regards,
Budi
On Mon, Sep 8, 2014 at 9:59 PM, Wander Lairson Costa <
[email protected]> wrote:
> 2014-09-07 22:40 GMT-03:00 Setia Budi <[email protected]>:
> > Dear all,
> > I have further question regarding the use of multiple identical usb
> reader.
> >
> > For example I have two physical USB port on my computer, let's call them
> > usb1 and usb2.
> > Then I attach two identical usb device to them. Let's call them device1
> and
> > device2.
> >
> > Then I write this Python script
> > devices = tuple(usb.core.find(find_all=True, idVendor=0x1,
> idProduct=0x2))
> >
> > My question is, how to make sure that devices[0] is always refer to the
> usb
> > device which is connected to usb1 and device[1] is always refer to the
> usb
> > device attach to usb2.
> > I found that there is no consistency every time I call this function:
> > usb.core.find(find_all=True, idVendor=0x1, idProduct=0x2)
> >
> > Anyone could assist me? Thank you :)
> >
>
> If your device has a serial number, you can order the list using that
> as the key, so devices will always have the same order.
>
>
> ------------------------------------------------------------------------------
> Want excitement?
> Manually upgrade your production database.
> When you want reliability, choose Perforce
> Perforce version control. Predictably reliable.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk
> _______________________________________________
> pyusb-users mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
------------------------------------------------------------------------------
Want excitement?
Manually upgrade your production database.
When you want reliability, choose Perforce
Perforce version control. Predictably reliable.
http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk
_______________________________________________
pyusb-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/pyusb-users
