krupski:
If you want to do "stuff" while concurrently doing A/D readings, simply use an interrupt to call the A/D every "X" number of time intervals you need.
I will use multiple stm32f0's in parallel which are controlled via external interrupts to start each sampling interval. I was hoping that I could reduce potential bottle-necking by allowing the MCU to just sample and buffer while leaving the relaying of the data to the DMA.