Re: Weirdness when trying to send commands to a Samsung TV

[Sahbi <sa...@ze...>]

> Ouch!! Have you had a look at it (for example graphically in 
> IrScrutinizer)? It is not even remotely close to what it is supposed 
> to be. So we conclude that your /dev/lirc (lirc_rpi) is not even close 
> to working correctly. Case closed!
I did look at it, but I'm not all that familiar with raw IR stuff yet so 
I had no idea what to look for exactly.
> It gets the timing all messed up. (Recall that generating a 38kHz 
> carrier in software requires an interrupt every 1/(2 * 38000) = 
> 0.000013 s = 13 microseconds.)
I see. Oddly enough though, the stereo remote also uses a frequency of 
38KHz and that works fine. But its signals are half the length of the TV 
so that might be why I guess.
> How to do it better is another topic. Let me just remark that I know 
> of an unofficial driver using the hardware PWM of the RPi: 
> https://github.com/Al-/lirc_rpi_hardpwm . See also 
> http://lirc.10951.n7.nabble.com/hardware-pulse-wave-modulation-modified-kernel-module-tc11134.html
Sounds interesting, I changed my IR sender's pin to one that supports 
PWM according to a few docs. I'll try compiling the module and mess with 
that.
> To my knowledge, the lirc_rpi is deprecated by the Linux/RPi 
> communities, but I am not sure it is for the "right" reason... ;-\
Yeah it is, but the replacement gpio-ir doesn't even work half as well 
as lirc_rpi. :D

Thanks so far. =]