5KHz acquisition control

Peter Dufault dufault at hda.com
Tue Jun 8 09:10:04 UTC 2010

On Jun 7, 2010, at 6:00 , Daron Chabot wrote:

> I agree with Robert: if you can generate interrupts at the frequency you need, _without_ using system's "ticks", that's the better approach. Hopefully your ADC hardware can generate interrupts upon conversion, or upon a "high-water-mark", or something similar...

Plus there's the temporal spectral purity you'll get triggering the conversions in hardware.  I've got an 8KHz application, the hardware synchronizes the sampling across four boards and then DMA's it to memory and I run off the DMA interrupt.

Peter Dufault
HD Associates, Inc.      Software and System Engineering

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