WeAct Studio RP2350B Core: How to check PSRAM 8MB?

[Local42]

Hi!

Please help me detect, check and use soldered PSRAM 8MB. Release v 1.28.0
Thanks!

[peterhinch]

The following will report the total free RAM in bytes. This is not a RAM test - it proves the RAM exists and is addressable but does not prove that it is free from faults.

import gc
gc.collect()
gc.mem_free()

See docs.

[Local42]

MicroPython v1.28.0 on 2026-04-06; WeAct Studio RP2350B Core with RP2350
Type "help()" for more information.

import gc
gc.collect()
gc.mem_free()
492992

I see it's compiled without PSRAM support. :(

[GitHubsSilverBullet]

I see it's compiled without PSRAM support. :(

Be thankful.
How much RAM speed are you willing to sacrifice?
Dropping down to 20%,10%, 5%? Even less?

[Local42]

It's not about Python. It's just a way of checking.

[peterhinch]

Micropython supports the Sparkfun Pro Micro RP2350 which has PSRAM. If you look at mpconfigboard.h for that board you will see how to enable it.

Re performance MP allocates internal RAM first, only using SPIRAM when it runs out of space. It can be possible to optimise the performance of an application using this information.