Using IR-remote for controlling XBMC

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###Wiring The Wiring is listed as following Picture, You got your IR receiver’s pins to corresponding pins on raspberry PI. Positive to Pin1(3.3v), negative to Pin6(GND), the signal pins to Pin12(GPIO 18).

###Check the Kernel information Log on to the raspberry PI, then input dmesg to view the startup information, we can see the lirc has been added to kernel.

	$ dmesg
	[    4.976752] systemd-udevd[822]: starting version 208
	[    7.121052] lirc_dev: IR Remote Control driver registered, major 248 
	[    7.187858] lirc_rpi: module is from the staging directory, the quality is unknown, you have been warned.
	[    7.234864] lirc_rpi lirc_rpi.0: lirc_dev: driver lirc_rpi registered at minor = 0
	[    7.234894] lirc_rpi: driver registered!
	[    8.191460] lirc_rpi: auto-detected active low receiver on GPIO pin 18
	[    8.981462] input: lircd as /devices/virtual/input/input3

Now Let’s check the GPIO status:

	OpenELEC:~ # cat /sys/kernel/debug/gpio 
	GPIOs 0-53, bcm2708_gpio:
	 gpio-16  (led0                ) out hi
	 gpio-17  (lirc_rpi ir/out     ) in  lo
	 gpio-18  (lirc_rpi ir/in      ) in  hi

If it didn’t appear, using:

	modprobe lirc_rpi gpio_in_pin=18 gpio_out_pin=1

###Getting your own remote controller’s codes Now let’s kill all of the lircd related process, then use mode2 to detect the infra-red remote input.

	OpenELEC:~ # ps -ef | grep lirc
	1016 root       0:00 eventlircd --evmap=/etc/eventlircd.d --socket=/var/run/lirc/lircd --release=_UP
	1035 root       0:00 /usr/sbin/lircd --driver=default --device=/dev/lirc0 --uinput --output=/var/run/lirc/lircd-lirc0 --pidfile=/var/run/lirc/lircd-lirc0.pid /etc/lirc/lircd.conf.rpi
	1070 root      16:02 /usr/lib/xbmc/xbmc.bin --standalone -fs --lircdev /var/run/lirc/lircd
	1146 root       0:00 grep lirc
	OpenELEC:~ # killall lirc
What is mode2?  
	Trusty@SomethingMissing:~$ apt-cache search mode2
	lirc-x - infra-red remote control support - X utilities

Then Let’s listen the infra_remote’s input.The input is quite strange:

	space 4501241
	pulse 8917
	space 4415
	pulse 577

###Catching the code using irrecord The next step is turns these message into some code.

	OpenELEC:~/.config # pwd
	/storage/.config
	OpenELEC:~/.config # ls
	aacs                 samba.conf.sample    vpn-config
	hosts.conf           sysctl.conf.sample
	remote.conf          udev.rules.d.sample

Use irrecord for recording some signals and transform them into code:

	NAME
	       irrecord - application for recording IR-codes for usage with LIRC
	
	OpenELEC:~/.config # irrecord -d /dev/lirc0 lircd.conf

The method is, first long-press some keys, the result on screen will be several dots, then the program will change to another line, this time when you press some key, it only has one dot. Keep pressing keys until the irrecord tells you successful. Then you should input make some keys meaningful to the following images, when you feel satisfied, press enter to endup the program.

Now your lircd.conf file is generated, let see what’s in it.

	$ cat lircd.conf
	begin remote
	
	  name  lircd.conf
	  flags RAW_CODES|CONST_LENGTH
	  eps            30
	  aeps          100
	
	  gap          106707
	
	      begin raw_codes
	
	          name KEY_UP
	             8953    4401     581     527     595     503
	              613     506     588     539     581     510

If you want to use the pre-defined files, simply go to the lirc.sourceforge.net/remotes you can find almost all of the remote control information. ###Using the infra-remote for controlling Now call irw, but irw stunned with doing nothing. This command will show you all of the input signal

	OpenELEC:~ # irw
	6a 0 KEY_RIGHT devinput
	6a 0 KEY_RIGHT_UP devinput
	69 0 KEY_LEFT devinput
	69 0 KEY_LEFT_UP devinput
	6c 0 KEY_DOWN devinput
	6c 0 KEY_DOWN_UP devinput

Now in your XBMC window, you will see you can navigate and select something using your remote control.