Hi all,
I use a Philips USB foot pedal[0] as an additional input device.
With usbhidaction(1), I can "program" its four "buttons".
After recent changes to uhid(4) device nodes' permissions, my USB
foot pedal "stopped working".
I understand that it is a *very recent* change but I rely on this
input device for my day-to-day computer usage and have a couple of
questions. I understand that the below permissions are final(?).
crw------- 1 root wheel 62, 0 Dec 16 11:17 /dev/uhid0
crw------- 1 root wheel 62, 1 Dec 16 11:17 /dev/uhid1
crw------- 1 root wheel 62, 2 Dec 16 11:17 /dev/uhid2
crw------- 1 root wheel 62, 3 Dec 16 11:17 /dev/uhid3
crw------- 1 root wheel 62, 4 Dec 16 11:17 /dev/uhid4
crw------- 1 root wheel 62, 5 Dec 16 11:17 /dev/uhid5
crw------- 1 root wheel 62, 6 Dec 16 11:17 /dev/uhid6
crw------- 1 root wheel 62, 7 Dec 16 11:17 /dev/uhid7
I use(d) the below script (executed from .xsession) in order to
configure and use the foot pedal:
#!/bin/sh
test -r $HOME/.footpedal.conf && {
pgrep usbhidaction > /dev/null ||
usbhidaction -f $(dmesg | awk '/Footcontrol USB/ {
getline
getline
print $1
}' | tail -n 1) -c $HOME/.footpedal.conf -i
}
$ cat $HOME/.footpedal.conf
Generic_Desktop:Joystick.Generic_Desktop:Pointer.Button:Button_1
1
action1
Generic_Desktop:Joystick.Generic_Desktop:Pointer.Button:Button_2
1
action2
Generic_Desktop:Joystick.Generic_Desktop:Pointer.Button:Button_3
1
action3
Generic_Desktop:Joystick.Generic_Desktop:Pointer.Button:Button_4
1
action4
1. Shall I *simply* introduce chmod(1)/chown(8) step in the above script?
2. Is the situation still more of a "watch this space"?
3. Is there any other way to get the uhid(4) device node (-f option) for
a particular USB device, other than the above dmesg(8)|awk(1) hack?
4. Or perhaps I'm doing it all wrong?
Relevant bits:
$ dmesg
[...]
uhidev1 at uhub0 port 10 configuration 1 interface 0 "Philips Speech
Processing Footcontrol USB" rev 1.00/3.02 addr 3
uhidev1: iclass 3/1
uhid0 at uhidev1: input=3, output=0, feature=0
[...]
$ usbdevs -v
Controller /dev/usb0:
addr 01: 8086:0000 Intel, xHCI root hub
super speed, self powered, config 1, rev 1.00
driver: uhub0
addr 02: 047d:1002 Kensington, USB/PS2 Wheel Mouse
low speed, power 100 mA, config 1, rev 4.00
driver: uhidev0
addr 03: 0911:091a Philips Speech Processing, Footcontrol USB
full speed, power 100 mA, config 1, rev 3.02
driver: uhidev1
addr 04: 1209:2301 Keyboardio, Model 01
full speed, power 500 mA, config 1, rev 1.00, iSerial Ckbio01
driver: umodem0
driver: uhidev2
driver: uhidev3
[0]
https://www.dictation.philips.com/gb/products/transcription-accessories/foot-control-acc2300/
Thanks in advance,
Raf
