LIRC and mapping of event handler etc.

wauwau · September 17, 2017 at 6:46 PM

Hi there,

I use a HP remote and a IR receiver from a different brand.

I got installed latest LibreELEC just today on a x86 J1900 Intel CPU. LibreELEC works so far quite fine.

"lsusb" gives me for the USB-IR receiver:

Code

Bus 001 Device 004: ID 0471:20cc Philips (or NXP)

"cat /proc/bus/input/devices"

Code

I: Bus=0003 Vendor=0471 Product=20cc Version=0100
N: Name="PHILIPS MCE USB IR Receiver- Spinel plus"
P: Phys=usb-0000:00:14.0-3.2/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.2/1-3.2:1.0/0003:0471:20CC.0004/input/input8
U: Uniq=
H: Handlers=sysrq kbd leds event7
B: PROP=0
B: EV=120013
B: KEY=fc2b0 10240000000000 0 400158000 8001f84000c004 e0beffdf01cfffff fffffffffffffffe
B: MSC=10
B: LED=1f

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For my understanding this tells me that the IR signals will be redirected to /dev/input/event7 where lirc should catch it, right?

The command "irw" does not give any output when I press any random button on my remote.

I assume, the mapping between lirc and event7 is not given. I tried to open hardware.conf in the /etc/lirc/, but there is none.

Where can I establish a link between event7 and the lirc? I think this would be the next step to setup a working IR remote for LibreELEC, right?

Thanks for advice.

**HiassofT** · September 17, 2017 at 7:05 PM

Update to LE 8.1.1, there were reports that on LE 8.0.x eventlircd sometimes didn't grab the IR input device.

Details about the remote handling in LE 8.1 and newer are in the wiki:

infrared_remotes [LibreELEC]

so long,

Hias

wauwau · September 17, 2017 at 7:10 PM

Thanks for answering, but as I wrote, I installed latest version today.

It is Version 8.1.1:

LibreELEC-Generic.x86_64-8.1.1.img.gz

**HiassofT** · September 17, 2017 at 8:46 PM

This is odd. Eventlircd should pick up the device, just checked and the udev rule matching the usb id is present in 98-eventlircd.rules.

Could you post the output of "lsof | grep /dev/input" and "cat /proc/bus/devices/input"?

If event7 is opened by eventlircd then most probably the spinelplus IR receiver doesn't support your remote - it's not configurable like the other IR receivers via ir-keytable.

so long,

Hias

wauwau · September 17, 2017 at 9:23 PM

list open files:

Code

LibreELEC:~ # lsof | grep /dev/input
294     /usr/sbin/eventlircd    /dev/input/event2
294     /usr/sbin/eventlircd    /dev/input/event7
299     /usr/lib/systemd/systemd-logind /dev/input/event3
299     /usr/lib/systemd/systemd-logind /dev/input/event2
299     /usr/lib/systemd/systemd-logind /dev/input/event1
299     /usr/lib/systemd/systemd-logind /dev/input/event0
637     /usr/bin/Xorg   /dev/input/event2
637     /usr/bin/Xorg   /dev/input/event3
637     /usr/bin/Xorg   /dev/input/event0
637     /usr/bin/Xorg   /dev/input/event1
637     /usr/bin/Xorg   /dev/input/event7
637     /usr/bin/Xorg   /dev/input/event4
637     /usr/bin/Xorg   /dev/input/event5
637     /usr/bin/Xorg   /dev/input/event6

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I guess you had a left-right confusion in your command, there is not /proc/bus/devices, but /proc/bus/input/devices, here we go:

Code

LibreELEC:~ # cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0
U: Uniq=
H: Handlers=kbd event0
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0003 Version=0000
N: Name="Sleep Button"
P: Phys=PNP0C0E/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=4000 0 0

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input3
U: Uniq=
H: Handlers=kbd event3
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0003 Vendor=045e Product=0745 Version=0111
N: Name="Microsoft Microsoft® 2.4GHz Transceiver v8.0"
P: Phys=usb-0000:00:14.0-4/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.0/0003:045E:0745.0001/i                                                                                                       nput/input4
U: Uniq=
H: Handlers=sysrq kbd leds event4
B: PROP=0
B: EV=120013
B: KEY=1000000000007 ff800000000007ff febeffdff3cfffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=045e Product=0745 Version=0111
N: Name="Microsoft Microsoft® 2.4GHz Transceiver v8.0"
P: Phys=usb-0000:00:14.0-4/input1
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.1/0003:045E:0745.0002/i                                                                                                       nput/input5
U: Uniq=
H: Handlers=kbd mouse0 event5
B: PROP=0
B: EV=1f
B: KEY=3f0003007f 0 0 483ffff17aff32d bf54444600000000 1f0001 130f938b17c000 677                                                                                                       bfad9415fed 9ed68000004400 10000002
B: REL=3c3
B: ABS=100000000
B: MSC=10

I: Bus=0003 Vendor=045e Product=0745 Version=0111
N: Name="Microsoft Microsoft® 2.4GHz Transceiver v8.0"
P: Phys=usb-0000:00:14.0-4/input2
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.2/0003:045E:0745.0003/i                                                                                                       nput/input6
U: Uniq=
H: Handlers=sysrq kbd event6
B: PROP=0
B: EV=10001f
B: KEY=3f0003007f 0 0 4c3ffff17aff32d bf54445600000000 1 130f938b17c007 ffff7bfa                                                                                                       d951dfff febeffdfffefffff fffffffffffffffe
B: REL=40
B: ABS=10100000000
B: MSC=10

I: Bus=0003 Vendor=0471 Product=20cc Version=0100
N: Name="PHILIPS MCE USB IR Receiver- Spinel plus"
P: Phys=usb-0000:00:14.0-3.2/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.2/1-3.2:1.0/0003:0471:20C                                                                                                       C.0004/input/input7
U: Uniq=
H: Handlers=sysrq kbd leds event7
B: PROP=0
B: EV=120013
B: KEY=fc2b0 10240000000000 0 400158000 8001f84000c004 e0beffdf01cfffff ffffffff                                                                                                       fffffffe
B: MSC=10
B: LED=1f

I: Bus=0001 Vendor=10ec Product=0283 Version=0001
N: Name="HDA Digital PCBeep"
P: Phys=card0/codec#0/beep0
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input9
U: Uniq=
H: Handlers=kbd event8
B: PROP=0
B: EV=40001
B: SND=6

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input10
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input11
U: Uniq=
H: Handlers=event10
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input12
U: Uniq=
H: Handlers=event11
B: PROP=0
B: EV=21
B: SW=4

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input13
U: Uniq=
H: Handlers=event12
B: PROP=0
B: EV=21
B: SW=140

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Well, How big is the chance that the remote is not working? I think the IR protocolls are pretty much standardized aren't they? I have the same remote working perfectly on a different IR-sensor in a Intel-NUC (built-in IR sensor).

Hias, thanks for support!

wauwau · September 17, 2017 at 9:30 PM

The IR receiver seems to be that devices here:

Philips OVU710023/01

The Remote controll is this one

Trying to locate specific model number for Touchsmart Remote... - HP Support Forum - 4615970

**HiassofT** · September 17, 2017 at 9:46 PM

Thanks for the info and sorry about the /proc mistake - was typing that quickly off the top of my head

lsof output looks fine, but the spinelplus receiver / driver seems to be hardwired to just the remote it came with (which is quite common for USB HID IR receivers).

So that combination won't work. You either need a generic IR receiver (a lot of motherboards come with that, you only need to plug in the IR receiver module) or use the remote that came with your IR receiver.

so long,

Hias

wauwau · September 25, 2017 at 6:35 PM

Yes, you were right, with a different remote it really works. Was not aware that there are IR receivers hard-wired to certain remote controlls.