ESP32-S3 LCD with quad PSRAM

bruchmueller
Posts: 18
Joined: Tue Apr 19, 2022 2:36 pm

ESP32-S3 LCD with quad PSRAM

Postby bruchmueller » Fri Sep 09, 2022 8:13 am

Dear,

there is support for the LCD controller and LVGL on the IDF, with an example https://github.com/espressif/esp-idf/bl ... ple_main.c

But this page says, that a octal PSRAM is required (or just suggested). For now, we have the ESP32-S3-WROOM-1-N8R2, what have just 2MB PSRAM and quad lines. Our boards will arrive in 2 weeks, so I cant try it right now.

Question is, can quad PSRAM modules used as well for the ESP IDF LCD driver? I understand, that the memory bandwidth is lower, so the refresh rate will be lower, too. But will it work with reduced refresh rate, with the ESP32-S3-WROOM-1-N8R2?

Thank you

ESP_Sprite
Posts: 9709
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-S3 LCD with quad PSRAM

Postby ESP_Sprite » Sat Sep 10, 2022 12:18 am

It's merely suggested, as long as you can stay within the (lower) bandwidth limits quad PSRAM will work fine.

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