[Solved] Problem with switching on the PSRAM on the ESP32 WEMOS LOLIN LIGHT board

Hi. I have added myself a PSRAM (8MB, APS6404L) to the WEMOS LOLIN 32 Light board. I just need to enable the support. I'm using Arduino IDE 2. There is an option in the menu to enable/disable PSRAM support, but it only appears on boards that have PSRAM as standard.
I don't know how to do it in Arduino for a board that doesn't have PSRM as standard. Theoretically in sdkconfig the entries are:


However, the SPI RAM is not initialised for my board. I think this is due to the way the board itself is defined in Arduino.
I did the SPI RAM addition according to this description: https://blog.pagefault-limited.co.uk/lolin32-lite-esp32-8mb-psram-upgrade-mod
According to the description here: https://arduinojson.org/v6/how-to/use-external-ram-on-esp32/ for Arduino you don't need to configure anything and the SPI RAM should supposedly be detected by itself. But it seems to me that it depends on the board definition.
I even set in sdkconfig:
CONFIG_SPIRAM_BOOT_INIT =y
CONFIG_SPIRAM_USE_MEMMAP =y

After reset I see only these entries:
PSRAM found: 0
PSRAM not found, inputBufferSize: 6399 bytes

Any ideas?

I haven't tried. And it's not like even if it "fixes" PSRAM for me it messes up other things?
Maybe rather to the compiler pass -DBOARD_HAS_PSRAM

Successful. I edited the file C:³³³[user]³³³³AppData³³³ocalArduino15.0.11.11.txt adding in the LOLIN32 LIGHT board part such an entry:

lolin32-lite.build.defines=-DBOARD_HAS_PSRAM

It compiled, uploaded to the board and:
20:28:04.276 -> [ 459][I][esp32-hal-psram.c:96] psramInit(): PSRAM enabled
20:28:04.318 -> [ 495][D][esp32-hal-cpu.c:244] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
20:28:04.351 -> [ 527][I][esp32-hal-i2c.c:75] i2cInit(): Initialising I2C Master: PSRAM INIT: 1
20:28:04.351 -> PSRAM found: 1

20:28:06.590 -> PSRAM found, inputBufferSize: 283615 bytes