Tuesday, 8 March 2016

KOdi keymap for USB remote "X10 lola"

Had remarkably a lot of trouble getting my old X10 RF  remote set up to work with Kodi.  Linux keymapping isn't quite as trivial as it once was.  Here are the steps I followed:
 
1. find the device vendor with lsusb.    Mine was 0BC7.

2. Find all the device's modalias files with
    find /sys -name *modalias | xargs grep -i 0BC7

3. Use the one that is a single string.  Mine was the file at
    /sys/devices/pci0000:00/0000:00:02.0/usb2/2-1/2-1:1.0/modalias

My modalias string looks like this.  We want everything before the 'e', because we want it to apply to all versions.
    input:b0003v0BC7p0002e0100-e0,1,2,k110,111,113,114,r0,1,amlsfw

4. Using heavy reference to this Arch wiki page,
    https://wiki.archlinux.org/index.php/Map_scancodes_to_keycodes
    /usr/include/linux/input.h

I create a hwdb file in /etc/udev/hwdb.d/10-x10.hwdb.  It contains:

Here's the HWDB file

evdev:input:b0003v0BC7p0002*
 KEYBOARD_KEY_00=esc    #    setup
 KEYBOARD_KEY_2c=favorites    #    learn
 KEYBOARD_KEY_02=power    #    power
 KEYBOARD_KEY_03=tv    #    tv
 KEYBOARD_KEY_04=audio    #    audio
 KEYBOARD_KEY_31=tv2    #    cable
 KEYBOARD_KEY_05=pc    #    pc
 KEYBOARD_KEY_06=vcr    #    x10
 KEYBOARD_KEY_0b=up    #    ch+
 KEYBOARD_KEY_08=volumedown    #    vol-
 KEYBOARD_KEY_0a=mute    #    m
 KEYBOARD_KEY_09=volumeup    #    vol+
 KEYBOARD_KEY_0c=down    #    ch-
 KEYBOARD_KEY_0d=1    #    1
 KEYBOARD_KEY_0e=2    #    2
 KEYBOARD_KEY_0f=3    #    3
 KEYBOARD_KEY_10=4    #    4
 KEYBOARD_KEY_11=5    #    5
 KEYBOARD_KEY_12=6    #    6
 KEYBOARD_KEY_13=7    #    7
 KEYBOARD_KEY_14=8    #    8
 KEYBOARD_KEY_15=9    #    9
 KEYBOARD_KEY_17=0    #    0
 KEYBOARD_KEY_16=numeric_star    #    add/del
 KEYBOARD_KEY_18=numeric_pound    #    a/b
 KEYBOARD_KEY_19=fn_f1    #    red – album
 KEYBOARD_KEY_1b=fn_f2    #    yellow – artist
 KEYBOARD_KEY_21=fn_f3    #    green – genre
 KEYBOARD_KEY_23=fn_f4    #    blue – track
 KEYBOARD_KEY_1c=pageup    #    pg up
 KEYBOARD_KEY_20=pagedown    #    pgdown
 KEYBOARD_KEY_1a=up    #    thumb up
 KEYBOARD_KEY_1d=left    #    thumb left
 KEYBOARD_KEY_1f=right    #    thumb right
 KEYBOARD_KEY_22=down    #    thumb down
 KEYBOARD_KEY_1e=enter    #    thumb press
 KEYBOARD_KEY_01=fn_f5    #    purple – playlist
 KEYBOARD_KEY_2d=fn_f6    #    orange – playing
 KEYBOARD_KEY_2e=home    #    t top
 KEYBOARD_KEY_2f=end    #    e end
 KEYBOARD_KEY_07=find    #    find
 KEYBOARD_KEY_30=select    #    select
 KEYBOARD_KEY_2b=previoussong    #    scan -
 KEYBOARD_KEY_24=rewind    #    rewind
 KEYBOARD_KEY_25=playpause    #    play
 KEYBOARD_KEY_26=fastforward    #    fast fwd
 KEYBOARD_KEY_2a=nextsong    #    scan +
 KEYBOARD_KEY_27=record    #    rec
 KEYBOARD_KEY_28=stop    #    stop
 KEYBOARD_KEY_29=pause    #    pause

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