connecting FLASH and PSRAM to ESP32-S2-MINI module

ms71de
Posts: 1
Joined: Fri Jan 29, 2021 8:23 pm

connecting FLASH and PSRAM to ESP32-S2-MINI module

Postby ms71de » Fri Jan 29, 2021 8:27 pm

Hi,
just a short question.
Is there any possibility to connect an external PSRAM to you ESP32-S2-MINI module.
If necessary, together with a SPI flash.

Maik

WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: connecting FLASH and PSRAM to ESP32-S2-MINI module

Postby WiFive » Sat Jan 30, 2021 4:03 pm

Not sure but there doesn't seem to be any efuse to change spi pins at boot so if it would be possible you would have to boot from internal flash then change spi pins in software using gpio matrix. There may be issues or limitations when trying to run flash and psram through matrix.

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