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STM32F2 STM32F4 DMA Streams and Channels

Question asked by scott.gordon.001 on Feb 14, 2012
Latest reply on Feb 24, 2012 by Clive One
Hi Guys,

I'm hoping someone can clarify the relationship and use of Streams and Channels on the STM32F2 DMA Controller.

I'm unclear whether a Stream can concurrently handle multiple channels, or whether it hadles only one at a time.

What I'm at present trying to do is allocate to each USART Tx its own channel on DMA2/Stream2, thinking that they would all be useable at the same time. But I note that DMA_Cmd() has only a Stream argument, not a Channel argument, so I think I may have misunderstood.

Thanks.
           Gordon

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