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F103: ADC injected scan mode question

Question asked by mroz.rafal.001 on Sep 24, 2014
Latest reply on May 7, 2015 by salam.mark

I'm implementing a high power buck converter using STM32F103C8. I need to measure voltage on 4 channels during each PWM period. I figured, that i will use ADC injected mode for this. Since PWM is being generated from TIM1, I'm triggering on TIM1-CH4 in an instant when I don't expect switching-related disturbances. 

What bothers me though, is that I'd like the ADC to convert all the selected channels as fast as it can and then wait for another trigger. Is there a way to do this? I have enabled scan mode, which I figured would do exactly that, but it seems that it only converts one channel and waits for another trigger event to happen before it converts another channel in sequence.