General • Re: PSRAM with RP2350B

Thank you for your detailed answer.
So is more that I was afraid of: adding a PSRAM module is not that simple and involves developping nothing less than a driver to achieve decent performances.
I hope this will be added in the SDK or in examples.

It's already planned: https://github.com/raspberrypi/pico-sdk/issues/2372

But I also think you're exaggerating, you don't need to write a driver, just set a couple of registers to tell the RP2350 what speed your PSRAM can run at. You don't need any of the fancy chip detection code, or calculating the optimal divisor settings for your PSRAM chip if you just hardcode that.

Or just copy the code from vadelma-pi above or the code that micropython uses: https://github.com/micropython/micropyt ... p2_psram.c

Statistics: Posted by laurent — Tue Jul 29, 2025 9:25 pm