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Getting lirc to work with Raspberry Pi 3 (Raspbian Stretch)
Notes to make IR shield (made by LinkSprite) work in Raspberry Pi 3 (bought from Amazon [1]).
The vendor has some documentation [2] but that is not complete and sufficient for Raspbian Stretch.
Following are the changes that I made to make it work.
$ sudo apt-get update
$ sudo apt-get install lirc
# Add the following lines to /etc/modules file
lirc_dev
lirc_rpi gpio_in_pin=18 gpio_out_pin=17
# Add the following lines to /etc/lirc/hardware.conf file
LIRCD_ARGS="--uinput --listen"
LOAD_MODULES=true
DRIVER="default"
DEVICE="/dev/lirc0"
MODULES="lirc_rpi"
# Update the following line in /boot/config.txt
dtoverlay=lirc-rpi,gpio_in_pin=18,gpio_out_pin=17
# Update the following lines in /etc/lirc/lirc_options.conf
driver = default
device = /dev/lirc0
$ sudo /etc/init.d/lircd stop
$ sudo /etc/init.d/lircd start
# Check status to make lirc is running
$ sudo /etc/init.d/lircd status
# Reboot before testing
$ reboot
# To test if lirc driver is working
$ sudo /etc/init.d/lircd stop
$ mode2 -d /dev/lirc0
<press a key in remote and you should see multple lines like below>
pulse 560
space 1706
pulse 535
# to record a custom remote/register a remote device
$ sudo /etc/init.d/lircd stop
$ sudo irrecord -d /dev/lirc0 ~/lircd.conf
# follow the instruction prompted by the above command carefully
# at the end ~/lircd.conf file will be generated
# backup the original lircd.conf
$ sudo mv /etc/lirc/lircd.conf /etc/lirc/lircd_original.conf
$ sudo cp ~/lircd.conf /etc/lirc/lircd.conf
$ sudo /etc/init.d/lircd start
# you can test if the recorded remote works by
$ irsend SEND_ONCE <device-name> KEY_POWER
$ irsend SEND_ONCE <device-name> KEY_VOLUMEUP
[1] https://www.amazon.com/Infrared-Shield-for-Raspberry-Pi/dp/B00K2IICKK/ref=pd_sbs_328_1?_encoding=UTF8&psc=1&refRID=1QPY33VFCGETBJ17K8QE
[2] http://learn.linksprite.com/raspberry-pi/shield/infrared-transceiver-on-raspberry-pi-lirc-software-installation-and-configuration/
@todlo
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todlo commented Jan 28, 2020

for anyone on buster who was, like me, struggling and failing with this, see: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=235256

tl;dr, lirc_dev isn't included in kernel 4.19, so it's recommended to use gpio-ir... but then irrecord (among others) doesn't work, so there's a patch that this absolute lifesaver has provided (linked in the above), which you can roll into your own patched, compiled & installed version of lirc.

@ephdtrg
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ephdtrg commented Feb 6, 2020

Can confirm, patching lirc with both guides provided by @mst94 and @todlo fixed all issues, codes are recognized correctly now, thank you guys.
Tested on RPi 4 with kernel 4.19.75 rasbpian buster and lirc 0.10.1-5.2 (patched).

@blanhamMines
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blanhamMines commented Aug 14, 2020

I am getting an error when trying to execute the command:

irsend SEND_ONCE vanLights KEY_POWER.

I get this output:

transmission failed
Error running command: Input/output error

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