I want to do do ADC conversions on all 3 ADCs simultaneous: they should be done in the same time. How should I achieve that?
1. With DMA? I can do multichannel conversions, but they are not simultaneous. When I start `HAL_ADC_Start_DMA(&hadc1, adcData, 5);` 3 times, it looks like it does conversions for each ADC synchronous. MultiMode is only for 2 DMA channels and I need to do 3 measurements simultaneous.
2. With IRQ: start conversions with interrupts and catch them all, and then when I get all 3 start them again?
3. Mix them?