DMA1 architecture

zbyszekl · ‎2012-11-28

Posted on November 28, 2012 at 15:09

Can DMA1 control SDIO and be responsible for transfer data from memory to SD card? I'm using DMA2 for different data transfers. Based on Table 23, page 173, document ID 15403 rev 4 it is not possible because SDIO is mapped to DMA2.

#dma1-sdio

Tesla DeLorean · ‎2012-11-28

Posted on November 28, 2012 at 15:50

Assuming STM32F2xx part.

DMA1 is for APB1 peripherals, the SDIO is on APB2.

Tables 22 and 23 diagram the DMA request connections.

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zbyszekl · ‎2012-11-28

Posted on November 28, 2012 at 22:18

Yes it is STM32F2xx.

Thank you clive1.