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STM32F4 Possible ADC Configuration?

Question asked by Keaven on Aug 5, 2015
Latest reply on Aug 31, 2015 by Amel N
Hello all,

I am using the ADC1 regular conversion or ADC1/2 dual-mode regular conversion to acquire a video signal.  The dual-mode is used at higher frame rate.  In both case, I am using the DMA. This part is working without a glitch.

Now, I want to use the ADC3 to convert in regular mode a few other channels.  I start the conversion after the video signal conversion is completed.  The problem I have is that when I am using the dual-mode at higher frame rate, it seems the ADC3 is alway busy.

Could you tell me if this configuration is possible?
ADC1/2 regular dual-mode with DMA.
ADC3 regular single conversion.

Thank you