At 7:36 PM -0700 1/4/06, Endaf Jones wrote:
The real hard part is getting the timing correct. The protocol is so
fast (57Khz) that it's hard to get the timing absolutely correct
without using a hardware IR sender. You can play with the repeat
values.
I just recently did some kernel and LIRC updates, and all my previous
problems with tuning using a homemade IR emitter via LIRC are now
gone. Here are some relevant parameters:
lirc-0.8.0pre3
kernel 2.6.14.5 with these options:
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_BKL=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
(I think the most important part is setting the RTC timer
frequency to 250 Hz and the CONFIG_PREEMPT_NONE option)
There is still some minor stuttering if you are playing video while
Myth tries to tune a new satellite channel in the background (such as
to start a scheduled recording). I was able to minimize this with a
min_repeat of 3. I'm also using the frequency 56000.
I'll also post to a separate thread the tuning script I'm using,
which I wrote with maximum flexibility in mind.
--
Dan Wilga [EMAIL PROTECTED]
Web Administrator http://www.mtholyoke.edu
Mount Holyoke College Tel: 413-538-3027
South Hadley, MA 01075 "Who left the cake out in the rain?"
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