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alexP
alexP
Associate
November 29, 2018
Question

DCMI to QSPI storage

  • November 29, 2018
  • 2 replies
  • 633 views

Hi there,

I am trying to use DCMI on STM32F469. Due to the limitation of the internal RAM, external RAM is needed. One option is to incorporate a QSPI-PSRAM. After reading "AN5020 - Digital camera interface for MCUs", my question still remains: Can DCMI data directly be routed to QSPI memory via DMA2?

Thanks

Alex

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    2 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    November 29, 2018

    I'm sure if the QSPI supports RAM access to the processor, that DMA would also work also. I'd expect performance to be pretty tragic. I'd wire up a QSPI-PSRAM to a NUCLEO and quantify performance.

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    alexP
    alexPAuthor
    Associate
    November 29, 2018

    Speed is one of my concern. Maybe that's why in "AN5020" QSPI path is not mentioned.

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