Lock-in detection on stm32f373cct6

[julien12657]

I want to implement a lock-in detection on stm32f373cct6 that means that I need to trig the DMA of the DAC and the DMA of the SDADC with the same timer.

I am using CubeMx to confugure the stm32f373cct6.

I want to trig the DMA of the injected SDADC1 with TIMER 3 (see pic1 and pic2) but it doesn't work.

(I succefully trig the DMA of DAC1 with TIMER 3)

What did I miss ?