Gpio-ir-tx dtoverlay

Leonti · October 26, 2019, 5:49am

Hi!
I have an application which controls my AC unit using lirc
It was working fine until I upgraded to balenaOS 2.43.0+rev1
After some investigation, it looks like never kernels 4.19.X don’t have lirc-rpi modules
They got replaced by gpio-ir for receiving IR and gpio-ir-tx for sending IR.

I tried setting RESIN_HOST_CONFIG_dtoverlay=gpio-ir-tx,gpio_pin=26, but no dev/lirc0 device appeared.

It looks like gpio-ir-tx is not even in the list of overlays:

github.com

balena-os/balena-raspberrypi/blob/02c73efc8ce98e45094ae62adb3347a969cd81ef/layers/meta-balena-raspberrypi/conf/layer.conf

BBPATH .= ":${LAYERDIR}"

BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
            ${LAYERDIR}/recipes-*/*/*.bbappend"

BBFILE_COLLECTIONS += "balena-raspberrypi"
BBFILE_PATTERN_balena-raspberrypi := "^${LAYERDIR}/"
BBFILE_PRIORITY_balena-raspberrypi = "1337"

LAYERSERIES_COMPAT_balena-raspberrypi = "warrior"

# Add all the overlays available in kernel source code
#
# The files below come from kernel-source/arch/arm/boot/dts/overlays/, but without
# the ones already defined in meta-raspberrypi/conf/machine/include/rpi-base.inc.
# They have been renamed to match rpi-base.inc.
KERNEL_DEVICETREE_append = " \
    overlays/adau1977-adc.dtbo \
    overlays/adau7002-simple.dtbo \
    overlays/ads1015.dtbo \

This file has been truncated. show original

Am I missing something?
Any tips on how I can send IR commands with my Rpi now?

Cheers,
Leonti

afitzek · October 28, 2019, 10:54am

Hi,

Thank you for the detailed investigation. I’m sorry that this causes problems. I’m not sure why it was removed, I guess it was not removed on purpose. You could however use https://github.com/balena-io-projects/kernel-module-build to build any driver you need out of tree for your kernel. So this should always work to get the drivers that you need.
Let us know if this solves your problem.

Cheers,
Andreas

nirmal_kumar · April 13, 2020, 5:42am

@ Leonti, Did you solved this issue using the new Kernel?

srlowe · April 13, 2020, 11:50am

lirc-rpi was removed in favour of gpio-ir. So you should use this new overlay from now on.