hardware hack lirc on Armbian Buster

[Alexey Woronov]

Hello!

Recently, Armbian Debian 10 was installed on my ODROID-C2
I can't configure lircd, but it worked on Odrobian Debian 9!

 

Quote

 

# uname -a
Linux odroid 4.19.57-meson64 #5.90 SMP PREEMPT Sat Jul 6 15:54:33 CEST 2019 aarch64
GNU/Linux
# modprobe meson_ir
# modprobe lirc_dev
modprobe: FATAL: Module lirc_dev not found in directory /lib/modules/4.19.57-meson64
# grep LIRC /boot/config-*
# CONFIG_LIRC is not set
how to setup lircd?
# cat /etc/lirc/hardware.conf
LIRCD_ARGS="--uinput"
LOAD_MODULES=true
DRIVER="default"
DEVICE="/dev/lirc0"
MODULES="meson-ir"
LIRCD_CONF=""
LIRCMD_CONF=""

 

 

Please, explain how they configure LIRC to 4.19 now without /dev/lirc*?

WBR, WRA-RIPE
 

Edited August 4, 2019 by Alexey Woronov
Correction of topic

[Igor]

1 hour ago, Alexey Woronov said:

but it worked on Odrobian Debian 9!

Which most likely uses stock 3.14.y/3.16.y kernel ... which we don't support anymore, but you can try to install it from armbian-config -> system -> alternative kernels ... or manually.

 

Perhaps lirc support exists in this kernel as well, but I haven't tested it.

[Alexey Woronov]

Perhaps it is enough to build a kernel with the CONFIG_LIRC=m option
and everything will be fine? What might not work there?

WBR, WRA-RIPE
 

[Igor]

I am having Lepotato (which is very similar to Odroid C2) on my desk running this kernel and IR is properly recognised:

[    9.754917] input: meson-ir as /devices/platform/soc/c8100000.bus/c8100580.ir/rc/rc0/input4

Other data: http://ix.io/1QC9

[Alexey Woronov]

Can you tell, how to configure lircd to use /devices/*/input* instead of /dev/lirc* ?
Thank you in advance

root@odroidc2:~# dmesg | grep meson-ir
[    6.405957] rc rc0: meson-ir as /devices/platform/soc/c8100000.bus/c8100580.ir/rc/rc0
[    6.407347] input: meson-ir as /devices/platform/soc/c8100000.bus/c8100580.ir/rc/rc0/input5
[    6.408476] meson-ir c8100580.ir: receiver initialized

 

I use Samsung remote control and I can’t configure it via input, only via lirc device

 bits           32

 flags SPACE_ENC|CONST_LENGTH
 eps            30
 aeps          100

 header       4489  4453
 one           554  1668
 zero          554   565
 ptrail        560
 gap          107568
 toggle_bit_mask 0x0

      begin codes
          KEY_RED                  0xE0E036C9
          KEY_GREEN                0xE0E028D7
          KEY_YELLOW               0xE0E0A857

... etc ...

WBR, WRA-RIPE
 

[Igor]

1 hour ago, Alexey Woronov said:

Can you tell, how to configure lircd to use /devices/*/input* instead of /dev/lirc* ?
Thank you in advance

I don't know. Use search above.

[Alexey Woronov]

Thank you. LIRC is not needed at all, Linux event subsystem is enough.
i needed to run commands in the Linux shell of ODROID-C2
by pressing the colored buttons on the Samsung TV RC, and
I used lircd and irexec earlier for this purpose, look above.

At first I realized that Samsung remotes use the NEC protocol:
ir-keytable --protocol=nec
Then I scanned some codes I need: ir-keytable -t -v
And place it to file: /lib/udev/rc_keymaps/samsung.toml

[[protocols]]
name = "samsung"
protocol = "nec"
variant = "nec"
[protocols.scancodes]
0x7076c = "KEY_RED"
0x70714 = "KEY_GREEN"
0x70715 = "KEY_YELLOW"
0x70716 = "KEY_BLUE"

The string of code initializing may be placed to rc.local, is it right?
/usr/bin/ir-keytable --clear --protocol=nec  --write=/lib/udev/rc_keymaps/samsung.toml 2>/dev/null
Instead of irexec, I used the utility for handling Linux events:
apt-get install triggerhappy
And place configuration like this:

# Samsung TV Remote Control
KEY_RED     1   /usr/local/bin/script.sh red
KEY_GREEN   1   /usr/local/bin/script.sh green
KEY_YELLOW  1   /usr/local/bin/script.sh yellow
KEY_BLUE    1   /usr/local/bin/script.sh blue

Thats all, I hope that someone will be useful
apt purge lirc

WBR, WRA-RIPE