Re: [Paparazzi-devel] ADC setup question

[Stephen Dwyer]

Hello Sergey,

I think one of the main reasons the injected channels are used is
because there is a data register for 4 channels in the injected mode,
so you can trigger the sampling with a timer, then wait till all four
channels are sampled and use a single interrupt (JEOC) at the end to
then copy all four samples into memory. With continuous I think you
need to copy over after every interrupt, unless you use a DMA (which
might have its own problems, there was some discussion on libopencm3
irc).

Hope that makes sense. Could be completely wrong, since I did not
write/design the code :).

Thanks,
-Stephen Dwyer

On Sun, Dec 2, 2012 at 6:37 AM, Sergey Krukowski <address@hidden> wrote:
> Hi!
> I'm wondering why there is on STM architecture the ADC is configured to work
> with injected channels and timer triggering, rather than using regular
> channels in continuous mode?
> Is there a big reason of doing so?
> Regards,
> Sergey
>
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