Dual ADC mode

davebryan19 · ‎2008-01-22

Posted on January 22, 2008 at 14:34

Dual ADC mode

davebryan19 · ‎2011-05-17

Posted on May 17, 2011 at 12:22

Hi,

I'm planning to use a STM32F103 in dual ADC mode. I want to perform simultaneous sampling on 2 analogue signals i.e. a separate ADC assigned to each signal. I have an external trigger which will initiate a 128 sample burst capture at a pre-programmed sample rate (up to 200kHz) & save the results to memory.

As far as I can tell the DMA controller can only work with a single ADC channel. So it seems I'll have to do this under software control or am I missing something?

Thanks

Dave

davebryan19 · ‎2011-05-17

Posted on May 17, 2011 at 12:22

In case anyone else was wondering, after reading the datasheet more carefully it says that that ADC1 & ADC2 results are saved as 32bits to the ADC1_DR which can be copied by a single DMA transfer