Banana Pro LIRC GPIO transmitter

Based off https://gist.github.com/zerkalica/f1c3a0a889cd974c495d

I was using Bananian and after reading armbian/build#135 I switched to using the Armbian Legacy Jessie kernel (http://www.armbian.com/banana-pi-pro/) to get the kernel module lirc_gpio.

Direct lircd usage

I am using GPIO physical pin 3 (aka sys pin 2, see sys column http://wiki.lemaker.org/How_to_control_the_IO_on_the_SBC_boards#Appendix:_40_Pins_GPIO_Mapping_Table_for_Banana_Pro_and_LeMaker_Guitar for the numbers to use with sysfs). The lirc_gpio module must be configured with the output pin you wish to use. This can be configured with kernel module parameters e.g. modprobe lirc_gpio gpio_out_pin=2 or via sysfs e.g. echo 2 >/sys/class/lirc_gpio/tx_gpio_pin. See below:

# This resolves to /dev/lirc0 for me
export LIRC_DEVICE=/dev/$(ls /sys/devices/platform/lirc_gpio.0/lirc/)

Using kernel module parameter

modprobe lirc_gpio gpio_out_pin=2
lircd --device=$LIRC_DEVICE --driver=default remotes.conf
irsend SEND_ONCE LG_AKB72915207 KEY_POWER

Using sysfs

modprobe lirc_gpio
echo 2 >/sys/class/lirc_gpio/tx_gpio_pin
lircd --device=$LIRC_DEVICE --driver=default remotes.conf
irsend SEND_ONCE LG_AKB72915207 KEY_POWER

lircd dameons

Based off this gist by @zerkalica I updated /etc/init.d/lirc to run two daemons. One is for the devinput receiver device and the other is for the lirc_gpio transmitter device.

See lirc for the updated script and lirc.diff to see the changes I made. Also have a look at hardware.conf. I've also modified the receiver device to use /dev/input/cb2ir after reading http://linux-sunxi.org/LIRC#Using_LIRC_with_Cubieboard2_.28A20_SoC.29 and creating /etc/udev/rules.d/10-cb2ir.rules with:

SUBSYSTEM=="input", ACTION=="add", KERNEL=="event*", ATTRS{name}=="sunxi-ir", SYMLINK+="input/cb2ir"

Note that this broke for me when I tried to use the sunxi-lirc module to get irrecord working because the name no longer matched. In any case I haven't needed irrecord just yet because I found the remote configs I needed online.

The transmitter daemon sets up a lirc device at /dev/lircd-tx that you can use with irsend.

irsend -d /dev/lircd-tx SEND_ONCE LG_AKB72915207 KEY_POWER

The original lircd for the onboard IR receiver on devinput is available at the normal /dev/lircd.