ADC multichannel DMA with Freertos on STM32H735G-DK

[CYBR]

I have tried many things but cannot seem to get ADC multichannel DMA with Freertos on STM32H735G-DK working.

I have setup the ADC to use DMA following many tutorials. I have set up a task to start the ADC with DMA, but the conversion complete callback never gets called.

So I reduced it to using just one channel with DMA, and still no good. I am using ADC3 channel 10. 

Any ideas?

Attached is my main.c