USB Headset Buttons

Author: Philipp Kolmann

The purpose if this program is to enable the Volume up and Down Buttons on my Logitech USB 30 Headset. USB Headsets are very useful for VoIP applications like SIP Networks or Skype. On my headset I have volume buttons which need extra care to be taken of. This Application does it.

Requirements

Linux 2.6 Enabled CONFIG_INPUT_EVDEV in Kernel
ALSA libasound2 header files

Just compile it using the Makefile. You should have the libasound2 header files installed (under Debian: apt-get install libasound2-dev)

To run it, you can tell it on the command-line which devices to use:

-e: Input Event Device:

usually /dev/input/event?

To find the event node which corresponds to your headset go to /sys/class/input/

In the input? directories are name files which have the name of the device. The number is the same as the number for your /dev/input/event? node.

-s: ALSA Hardware

usually hw:0 for first Soundcard, hw:1 for second...

-n: Alsa Subdevice to use. Should be something like

'Speaker Playback Volume'.

-a: Set alsa-steps for the change in the mixer

-p: Specify PID File, where child PID should be written to

-d: set Debug (more -d, more Debug)

For Release 0.9 I added some checking for the proper devices. If it doesn't work, send me the output of the files:

/proc/asound/cards
/sys/class/input/*/name and I will check for a more general decision process.

usb-headset-button is now much easier to configure. No more need to tweak in the source.