ir-ctl

install

# apt install v4l-utils

root@nuc2:~# ir-ctl --features
Receive features /dev/lirc0:
 - Device can receive raw IR
 - Set receive carrier
 - Can set recording timeout min:100000 microseconds max:1000000 microseconds
Send features /dev/lirc0:
 - Device can send raw IR
 - Set carrier
 - Set duty cycle

sniff

root@nuc2:~# ir-ctl -r -m -v

gpio-ir-tx

send IR signals using GPIO on cubieboard

device tree

https://github.com/dpavlin/linux-gpio-pinout/blob/master/device-tree/gpio-ir-tx.dts

/*
 * add gpio-ir-tx to enable ir send on sunxi
 * for RM Mini 3 IR board connected to pins
 */

/dts-v1/;
/plugin/;

/ {
	compatible = "allwinner,sun4i-a10", "allwinner,sun7i-a20", "allwinner,sun50i-a64", "allwinner,sun50i-h5";

	/* Documentation/devicetree/bindings/leds/irled/gpio-ir-tx.txt */
	fragment@0 {
		target-path = "/";

		__overlay__ {
			irled@0 {
				compatible = "gpio-ir-tx";
				gpios = <&pio 1 10 0>; /* PB10 GPIO_ACTIVE_HIGH */
			};

		};
	};
};

config

root@cubieboard:~# modinfo gpio-ir-tx
filename:       /lib/modules/4.19.44-sunxi/kernel/drivers/media/rc/gpio-ir-tx.ko
license:        GPL
author:         Sean Young <sean@mess.org>
description:    GPIO IR Bit Banging Transmitter
alias:          of:N*T*Cgpio-ir-txC*
alias:          of:N*T*Cgpio-ir-tx
depends:        
intree:         Y
name:           gpio_ir_tx
vermagic:       4.19.44-sunxi SMP mod_unload ARMv7 thumb2 p2v8 

root@cubieboard:/home/dpavlin/linux-gpio-pinout# armbian-add-overlay device-tree/gpio-ir-tx.dts
Compiling the overlay
Copying the compiled overlay file to /boot/overlay-user/
Reboot is required to apply the changes

root@cubieboard:/home/dpavlin/linux-gpio-pinout# ./overlay-load.sh /boot/overlay-user/gpio-ir-tx.dtbo
+ dtb=/boot/overlay-user/gpio-ir-tx.dtbo
+ test -f /boot/overlay-user/gpio-ir-tx.dtbo
+ + awkmount { print $3 }
 -t configfs
+ config=/sys/kernel/config
+ basename /boot/overlay-user/gpio-ir-tx.dtbo
+ name=gpio-ir-tx.dtbo
+ dir=/sys/kernel/config/device-tree/overlays/gpio-ir-tx.dtbo
+ test -d /sys/kernel/config/device-tree/overlays/gpio-ir-tx.dtbo
+ mkdir /sys/kernel/config/device-tree/overlays/gpio-ir-tx.dtbo
+ cat /boot/overlay-user/gpio-ir-tx.dtbo
+ cat /sys/kernel/config/device-tree/overlays/gpio-ir-tx.dtbo/status
applied
root@cubieboard:/home/dpavlin/linux-gpio-pinout# [Sun Jun  2 19:51:10 2019] rc rc1: GPIO IR Bit Banging Transmitter as /devices/platform/irled@0/rc/rc1
[Sun Jun  2 19:51:10 2019] rc rc1: lirc_dev: driver gpio-ir-tx registered at minor = 1, no receiver, raw IR transmitter
[Sun Jun  2 19:51:10 2019] rc rc1: GPIO IR Bit Banging Transmitter as /devices/platform/irled@0/rc/rc1
[Sun Jun  2 19:51:10 2019] rc rc1: lirc_dev: driver gpio-ir-tx registered at minor = 1, no receiver, raw IR transmitter

root@cubieboard:~# apt-get install v4l-utils # to get ir-ctl

root@cubieboard:~# ir-ctl --device /dev/lirc1 --features
Receive features /dev/lirc1:
 - Device cannot receive
Send features /dev/lirc1:
 - Device can send raw IR
 - Set carrier
 - Set duty cycle