On Tue, 2006-10-24 at 12:49 +0200, Sebastian Smolorz wrote: > > Hi all, > > > > I'm currently working on porting I-pipe to the ARM S3C24xx. The patch is > > attached, it must be applied after the shipped > > adeos-ipipe-2.6.15-arm-1.5-01.patch. Unfortunately, there is still a severe > > bug somewhere. I built Xenomai as modules. When I try to modprobe > > xeno_native, the system hangs. No reaction at all, inlcuding serial console > > and network access. I guess that interrupts are not handled any more. From > > what I see if I spread some debug printk() into my code, the timer starts > > working under the control of the Xenomai domain and one or two calls to the > > Linux timer interrupt handler are made. But after that nothing happens any > > more. > > > > As I try to find the bug for some days now but wasn't successful maybe the > > experts have any hints where to continue searching. Or perhaps there is > > someone who can test it and confirm or disprove my observation? It would be > > great to support one more ARM model. > > Small update with new infos: After Xenomai has (re)started the system timer > the Linux timer interrupt handler ist called only once, but > xnintr_clock_handler() is called several thousand times. So it seems that the > timer interrupt handler of Linux is not properly called or Xenomai is > starving Linux. > > Sebastian > > _______________________________________________ > Xenomai-core mailing list > [email protected] > https://mail.gna.org/listinfo/xenomai-core
Hi. I had the same Problem on my Netsilicon board.
I changed my timer-clock from CPU_CLK/64 to CPU_CLK so Xenomai is able
to use it with a higher granularity (set_dec/get_dec). So my machine has
1769472 ticks per jiffy instead of 27648. (works only with 32bit timers)
Further I had to set CLOCK_TICK_RATE (/include/asm/arch-xxxx/timex.h) to
real cpu frequency (im my case around 176000000).
Now I'm able to run latency with periods > 200us
- Manfred
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