libcec-daemon
Many months ago I purchased this cool little device from Pulse Eight, called a USB CEC Adapter. Basically it allows your computer to speak to a HDMI device over a protocol called CEC. This is useful for using your PC to control your TV, and for using your TV remote to control your PC. This device now allows me to use my normal TV remote to control XBMC, and to turn my PC on standby if I turn my TV off.
It’s all pretty neat, but each application needed to add libcec support, which means many applications do not support this little adapter. So I decided to write a simple uinput daemon that bridged Linux input events, and this CEC device. My project, libcec-daemon, has been available for many months now, and I’ve been using it successfully on my television. I just had forgotten to write a quick blog post about it 
So please check it out, and support the great guys at Pulse Eight.
- Posted in: Blog
Hello, I try to use libcec-daemon on a Raspberry Pi, but when i launch it with “./libcec-daemon RPI”, I get this :
root@XBian:~# ./libcec-daemon/libcec-daemon RPI
INFO – Opened /dev/uinput
INFO – Created uinput device
RPI
Failed to open adapter
Do I have make something wrong ?
what does
./libcec-daemon --listshow?Hi, it does that :
root@XBian:~/libcec-daemon# ./libcec-daemon –list
INFO – Opened /dev/uinput
INFO – Created uinput device
[0] port:RPI path:Raspberry Pi
Failed to open
Thank you for your help
I’ve tried with -v option, it does that (4 times) :
DEBUG – Main::onCecLogMessage(1167 [D]unregistering all CEC clients
)
DEBUG – Main::onCecLogMessage(1174 [D]Broadcast (F): osd name set to ‘Broadcast’
)
DEBUG – Main::onCecLogMessage(1178 [D]InitHostCEC – vchiq_initialise succeeded
)
DEBUG – Main::onCecLogMessage(1181 [D]InitHostCEC – vchi_initialise succeeded
)
DEBUG – Main::onCecLogMessage(1183 [D]InitHostCEC – vchi_connect succeeded
)
DEBUG – Main::onCecLogMessage(4512 [E]failed to release the previous LA
)
DEBUG – Main::onCecLogMessage(4516 [E]could not open a connection (try 1)
I think the line “failed to release the previous GA” is relevant, isn’t it ?
Hey Zoolander, until last night I was actually unaware that libcec supported the Raspberry Pi. Those error message seem to be coming out of the libcec code (outside of my control). I will try and track down what’s happening, and speak to the libcec guys if needed.
Thank you
hello, i’m traying this deamon and i think that is very powerfoul, i usi this for control VDR via HDMI-CEC.
there is a way to customize the keymap?
thank you
Hey, sorry there isn’t a way to customise the keymap (other than recompiling it yourself). What specifically did you want to be able to change? I might be able to add some kind of keymap support.
I’ve tried to recompile after editing of main.cpp but some keys don work, for example colored button or the button electronic_program_guide i’d like to use this button as key_menu but don’t work…
Can you say me how remap the button?
another question, there is a way to don’t turn on the TV when libcec-daemon start? i believe that this option was configured in USB-CEC adapter (bios) and not in software
thank you
Hey,
Is there a way to use your software to send commands to the TV? Let’s say I’m watching TV and I get a Skype call or something, I have devilspie to catch the event and command the libcec-daemon to send as message to the TV and it changes to the correct input. I think this would be a nice feature to have and useful to others as well.
Thanks for the great software and hope to hear from you soon.