Regarding streams of DMA controller in STM32F429 series.

[gaurav kumar]

Posted on June 02, 2017 at 11:37

Hello everyone,

I have recently switched from 8 bit to 32 bit mcu. I'm Working on STM32F429xx series. As per datasheet of STM32F429ZI mcu (cortex m4), each of DMA controller have 8 streams. is it possible for DMA controller to transfer data over all 8 streams simultaneously?  

thanks in advance.

#dma #stm32f4 #stm32f429

[waclawek.jan]

Posted on June 02, 2017 at 11:43

Yes (in that all streams may be active at the same time).

The actual data transfer happens when requests arrive; and if requests are simultaneous, the transfers are sequenced according to a priorities scheme.

Please have a look also at AN4031.

JW

[gaurav kumar]

Posted on June 02, 2017 at 11:47

thanks for your quick reply.