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Re: [Paparazzi-devel] adc injected vs regular channels

From: Stephen Dwyer
Subject: Re: [Paparazzi-devel] adc injected vs regular channels
Date: Fri, 2 Aug 2013 10:27:21 -0600

Hi Chris,

Yes, and I think the major reasons for injected was 1) it prioritizes injected channels for very accurate timing of samples and 2) there is one data buffer per injected channel, which means you can sample all four and then move data out at the end, instead of either triggering an IRQ on each channel completion or using a DMA (the DMAs seem to have problems running too many peripherals at once...)

The only major disadvantage I see is that you can only sample 4 at once.

-Stephen Dwyer

On Fri, Aug 2, 2013 at 5:55 AM, Chris <address@hidden> wrote:
Ok this is a very good reason :-)

On 08/02/2013 01:17 PM, wrote:
I asked once the same question. As I understand, it was a <quick and dirty>
solution to have a working ADC without bother about DMA. It is probably even
somewhere in to do list.

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