I have a Teensy 4.1 application where a known number of SPI reads take place sequentially. I want to ferry the data from the SPI reads to a RAM buffer implemented with the auxiliary PSRAM chips. It seems like others have DMA-based implementations for SPI reads that I could use, but I'm looking for the simplest project I can use as a starting point. Any help?

The application is transferring data from a camera. I posted previously about this, but got no replies, so I'm retrying with a thread that is more general to SPI+DMA and not specific to Arducam units.

Original thread
https://forum.pjrc.com/threads/66948...-to-RAM-buffer