[mythtv-users] updating a keymap

Sun Nov 13 17:52:52 UTC 2016

On 11/13/2016 07:26 AM, Vincent McIntyre wrote:
> Hi folks
>
> ubuntu 16.04 LTS with ppa mythtv 0.28.
>
> I need a bit of help figuring out my remote.
> I've read https://www.mythtv.org/wiki/HID_Remotes,
> thanks to the people who wrote it - so helpful.
>
> I need to remap a few keys to scancodes less than 255.
> The wiki page above refers to /usr/src/<linux>/input.h
> but I can't find any header files that have that kind
> of data in it.
>
> Can anyone suggest how to find appropriate keycode names?
> I could cargo-cult the names given in the wiki page, but
> I'd prefer to understand what I am doing enough that
> I could then update the wiki page.
>
> Details:
>
> The remote is a little unusual. I have a
> 'DVICO FusionHDTV DVB-T Dual Digital 4'
> tuner card and the (IR) remote came with that.
> The sensor for the remote plugs into the card
> with a 3.5mm jack and I run the cable to the
> front of the computer to a spot where the remote
> can talk to it. Worked fine with LIRC on 14.04.
> Now I'm trying to leave LIRC behind.
>
> The good news is the remote mainly works.
> evtest sees the device (event15 in the list below)
> and ir-keytable will talk to it if I specify the device, ie
>   ir-keytable -t -d /dev/input/event15
> Both report the same keycodes when I press any key, including
> the ones that don't work in mythtv.
>
> The keytable I get from ir-keytable -r exactly matches
> the one in /lib/udev/rc_keymaps/dvico_mce.
>
> The odd thing is the device does not show up in /sys/class/rc/,
> only event10 and event16 do. So ir-keytable does not show the
> device by default. Can anyone explain why this occurs?
>
> Thanks for any help
> Vince
>
> # evtest
> No device specified, trying to scan all of /dev/input/event*
> Available devices:
> /dev/input/event0:	Sleep Button
> /dev/input/event1:	Power Button
> /dev/input/event2:	Microsoft Microsoft Wheel Mouse Optical®
> /dev/input/event3:	Dell Dell USB Entry Keyboard
> /dev/input/event4:	iMON Panel, Knob and Mouse(15c2:ffdc)
> /dev/input/event5:	HDA Intel Rear Mic
> /dev/input/event6:	HDA Intel Front Mic
> /dev/input/event7:	HDA Intel Line
> /dev/input/event8:	HDA Intel Line Out
> /dev/input/event9:	HDA Intel Front Headphone
> /dev/input/event10:	iMON Remote (15c2:ffdc)
> /dev/input/event11:	HDA NVidia HDMI/DP,pcm=3
> /dev/input/event12:	HDA NVidia HDMI/DP,pcm=7
> /dev/input/event13:	HDA NVidia HDMI/DP,pcm=8
> /dev/input/event14:	HDA NVidia HDMI/DP,pcm=9
> /dev/input/event15:	IR-receiver inside an USB DVB receiver
> /dev/input/event16:	Leadtek WinFast DTV Dongle Dual
> Select the device event number [0-16]: 15
> Input driver version is 1.0.1
> Input device ID: bus 0x3 vendor 0xfe9 product 0xdb78 version 0x827b
> Input device name: "IR-receiver inside an USB DVB receiver"
> Supported events:
>   Event type 0 (EV_SYN)
>   Event type 1 (EV_KEY)
>     Event code 2 (KEY_1)
>     Event code 3 (KEY_2)
>     Event code 4 (KEY_3)
>     Event code 5 (KEY_4)
>     Event code 6 (KEY_5)
>     Event code 7 (KEY_6)
>     Event code 8 (KEY_7)
>     Event code 9 (KEY_8)
>     Event code 10 (KEY_9)
>     Event code 11 (KEY_0)
>     Event code 15 (KEY_TAB)
>     Event code 28 (KEY_ENTER)
>     Event code 103 (KEY_UP)
>     Event code 105 (KEY_LEFT)
>     Event code 106 (KEY_RIGHT)
>     Event code 108 (KEY_DOWN)
>     Event code 113 (KEY_MUTE)
>     Event code 114 (KEY_VOLUMEDOWN)
>     Event code 115 (KEY_VOLUMEUP)
>     Event code 116 (KEY_POWER)
>     Event code 128 (KEY_STOP)
>     Event code 134 (KEY_OPEN)
>     Event code 139 (KEY_MENU)
>     Event code 141 (KEY_SETUP)
>     Event code 158 (KEY_BACK)
>     Event code 163 (KEY_NEXTSONG)
>     Event code 164 (KEY_PLAYPAUSE)
>     Event code 165 (KEY_PREVIOUSSONG)
>     Event code 167 (KEY_RECORD)
>     Event code 168 (KEY_REWIND)
>     Event code 208 (KEY_FASTFORWARD)
>     Event code 212 (KEY_CAMERA)
>     Event code 352 (KEY_OK)
>     Event code 356 (KEY_POWER2)
>     Event code 358 (KEY_INFO)
>     Event code 364 (KEY_FAVORITES)
>     Event code 365 (KEY_EPG)
>     Event code 371 (KEY_ANGLE)
>     Event code 372 (KEY_ZOOM)
>     Event code 377 (KEY_TV)
>     Event code 386 (KEY_TUNER)
>     Event code 389 (KEY_DVD)
>     Event code 391 (KEY_MP3)
>     Event code 402 (KEY_CHANNELUP)
>     Event code 403 (KEY_CHANNELDOWN)
> Properties:
> Testing ... (interrupt to exit)
>
> # ir-keytable
> Found /sys/class/rc/rc0/ (/dev/input/event10) with:
> 	Driver imon, table rc-imon-mce
> 	Supported protocols: rc-6 
> 	Enabled protocols: rc-6 
> 	Name: iMON Remote (15c2:ffdc)
> 	bus: 3, vendor/product: 15c2:ffdc, version: 0x0000
> 	Repeat delay = 500 ms, repeat period = 125 ms
> Found /sys/class/rc/rc1/ (/dev/input/event16) with:
> 	Driver dvb_usb_af9035, table rc-empty
> 	Supported protocols: nec 
> 	Enabled protocols: 
> 	Name: Leadtek WinFast DTV Dongle Dual
> 	bus: 3, vendor/product: 0413:6a05, version: 0x0200
> 	Repeat delay = 500 ms, repeat period = 125 ms
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Here are my somewhat cryptic notes from when I used a similar HID remote:

Remote Control (Pinnacle)
Set up as a keyboard. Do not install LIRC
Install ir-keytable
Find out what scan table is used
ir-keytable
Copy the scan table from here and modify it
/lib/udev/rc_keymaps/dib0700_rc5
Make changes then store the result in /etc/rc_keymaps
to change it run
sudo ir-keytable -p RC5 -w /etc/rc_keymaps/dib0700_rc5

You have to run that every time you reboot, so you can put it somewhere
convenient.