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Injected conversion when a regular conversion happens on the same channel. Will samples be correct?

Question asked by knapht.fnatt on Dec 19, 2014
The data sheet says that an injected ADC conversion may happen on an external interrupt and will take priority over regular conversions. The interrupted regular conversion will resume once the injected conversion is complete.

This I understand and it is ok, but let's say ADC1 is regular converting on channel 2 and an injected conversion happens at ADC2 on channel 2 at the same time. Does this still apply as I think I have read somewhere that the same channel can not be sampled by two ADCs at the same time as the channels are multiplexed into the ADCs.

I am using STM32F429.

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