[BRLTTY] udev rules

[Samuel Thibault]

Dave Mielke, le mer. 18 mai 2022 18:36:14 -0400, a ecrit:
> [quoted lines by Samuel Thibault on 2022/05/18 at 17:59 +0200]
> 
> >ENV{PRODUCT}=="403/6001/*", ATTR{manufacturer}=="Hedo Reha Technik GmbH", ENV{BRLTTY_BRAILLE_DRIVER}="hd", GOTO="brltty_usb_run"
> >ENV{PRODUCT}=="403/6001/*", ATTR{manufacturer}=="Tivomatic Oy", ENV{BRLTTY_BRAILLE_DRIVER}="at", GOTO="brltty_usb_run"
> >
> >but these are not actually generic thanks to the manufacturer filtering
> >(AIUI these manufacturers' purpose is/was only to produce Braille
> >devices)
> 
> Yes. There's also another, more hidden, one:
> 
>    ENV{PRODUCT}=="1a86/7523/*", ATTRS{idVendor}=="1a40", ATTRS{idProduct}=="0101", ENV{BRLTTY_BRAILLE_DRIVER}="bm", GOTO="brltty_usb_run"
> 
> This one is specifying the identity of an internal hub, so it filters on the combination of the internal hub and the braille device beyond that hub.

I was wondering about it indeed. When I looked at the 1a40:0101 vendor
it looked quite generic to me: Terminus Technology Hub. Are we really
sure that only these Braille devices have such hub behind the
usb-to-serial 1a86:7523?

Samuel