DCMI to QSPI storage

[alexP]

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

[Tesla DeLorean]

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.

[alexP]

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