Re: Recent threads on lirc_serial serial_ir

On 08/22/17 06:13, Tom Dexter wrote:
> Hi. New to the list here. I'm running on Gentoo and was trying to move
> from the 4.9.34 kernel to 4.12.5. This of course means the move from
> lirc_serial to serial_ir. I seem to be running into the same issue
> described here:
> 
> https://sourceforge.net/p/lirc/mailman/message/35926194/
> 
> That is, the /dev/lirc0 device seems to be working fine and mode2
> seems to indicate that my driver configuration (default driver) is
> correct, however I get nothing with irw.
> 
> I reverted the change that was supposed to be the issue, that is, this one:
> 
> https://patchwork.kernel.org/patch/9585613/
> 
> ...and that doesn't seem to fix it. I also tried patching with a
> change I've seen many places where the resolution was intended to
> return milliseconds, where that LIRC_GET_REC_RESOLUTION returns:
> 
> val = dev->rx_resolution / 1000;

The recording resolution is typically 50 micro seconds, (although I am 
not sure how many drivers report that, or something sensible at all) so 
you may try (for testing) to hardcode that number.

> That didn't help either. Everything appears fine but I get nothing
> from irw or in any applications (mythtv specifically). Any idea what
> might be going on?

I suggest that you use IrScrutinizer (in a recent version) to verify the 
sanity of the /dev/lirc0 data. For this, open /dev/lirc as receiving 
device and shoot a *well known* IR signal, and verify that it is sensible.

Greetz,

Bengt

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