--- In "Anouk Ahamitet" <> wrote:
>
>
> --- In "charliem_1216" <charliem_1216@>
> wrote:
>
> >... Better to fix your A/D code so it is insensitive to system load.
>
> We're working on it, but since ts-linux doesn't have very accurate
> timers (minimum usleep() appears to be almost 10 MILLISECONDS and the
> min nanosleep() is about 3.5 MILLISECONDS) we're stuck doing a busy wait
> on the built-in microsecond timer on the TS-7800 in order to get
> accurate (and fast) enough timing on our A/D operations (note: we're
> using a 3rd party A/D, not one of Technologic's because the TS A/Ds
> don't support the input voltage ranges we require and/or don't have
> enough resolution).
>
Why not look at A/D PC/104 boards like those at www.mesanet.com
they have the timers on board and FIFOs.
You may also be able to use the TS-7800 high res timer to measure the
exact time your sample was taken and interpolate to get the value of
the reading for the time you want. Don't wait on the timer, just read it.
David.
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