Blair wrote:
> Question: The T4 hardware timer can run at about 980kHz. What's
> the fastest you can make use of it in a user space app? I'd like
> to be able to do a periodic task every 125 microseconds or maybe
> half that. Do I have to write a kernel driver to do this?
You should have a look at RTAI if you want real-time.
Another option would be to use pthread with SCHED_FIFO policy and use
the RTC to make your thread periodic. The only drawback with the RTC
is that that you are limited to frequencies that are power of 2, so in
your case it will be 122 micro seconds.
I use to do that to measure the response of a motor, as far as i
remember the measurement was done at 1024Hz.
Chris
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