ESP32 Forum

Posted: **Wed Nov 20, 2019 9:16 pm**

Is it valid to write (without reading back) to PSRAM while within an interrupt?

My code works, I'm just not sure if it's well-defined/legal or not.

Posted: **Thu Nov 21, 2019 6:46 am**

Should work as long as cache is enabled so not an IRAM interrupt

write to external SPRAM from interrupt?