Help with ESP32 PSRAM

[Mike0675]

I try to write my Projects for both Teensy and ESP32.

In Teensy I use EXTMEM to put a Class in PSRAM like:

EXTMEM shared_Cache *sCache;

This works like a charm.

But how can I do this with ESP32?

All I can find is something like:

shared_Cache *sCache = (shared_Cache*)heap_caps_malloc(4000000, MALLOC_CAP_SPIRAM);

This compiles, but put the ESP32 in a bootloop.

Thanks for your help.

 

[Pio]

use ps_malloc, it checks if the PSRAM is initialized. Also check if the returned pointer is not NULL before using it.

 

[jmarsh]

EXTMEM shared_Cache *sCache;

This works like a charm.

Are you sure? That looks like it's just declaring a pointer, not a class object.

 

[Mike0675]

Are you sure? That looks like it's just declaring a pointer, not a class object.

You are right: this was a change I made in between, which I didnt change back.

In Original its:

EXTMEM shared_Cache sCache;

That works.