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STM32F303 ADC/DMA

Question asked by singer.matthew on Jun 26, 2014
Latest reply on Jun 27, 2014 by singer.matthew
I am using all 4 ADC's with 4 channels used on each. ADC 1 is on DMA1 and ADCs 2-4 have channels on DMA2.  All 4 ADC's run off timer15 at 1Khz.  The problem I am having is that I only get DMA interrupts for ADC 3,4 a few times and then not at all.  If I change the DMA priority so that it is higher on ADC4, then I only get ADC1 and ADC4.  DMA2 doesn't seem to be arbitrating among the channels.   It doesnt effect it if the IRQ priority on each of the DMA interrupts is the same or different.

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