Can Octal SPI on the ESP32-S2/S3 be used to drive a parallel port interface?

[XanCraft21]

Hello, random idea, is it possible to use Octal SPI to drive a parallel port device like a lcd display? I had an idea to try it and i wanted to ask if other people have tried it yet. Looking at the official documentation about the SPI bus on the ESP32-S2 and the ESP32-S3, both support Octal SPI which I believe is 8 data lines. My theory is i can use this to drive a parallel only tft lcd display with great speed and efficiency without any special external hardware. Any answers or recommendations are good. Thank you.

[me-no-dev]

S2 and S3 actually have a dedicated peripheral to drive such displays and supports 16 bits/lanes as well. Check out https://github.com/espressif/arduino-esp32/tree/master/tools/sdk/esp32s3/include/esp_lcd

[XanCraft21]

Thank you. I looked at the code and i do not know which display driver chip it is designed to drive. My project requires a specific type of display. The reason why i asked about octal SPI is because i wanted to design a universal display library for a specific bus interface. I plan to check out the pre-made drivers too, as well as experiment with octal SPI.

Do you have any example code for Arduino using the dedicated SPI drivers with the ESP-IDF?

[Jason2866]

@XanCraft21 Project Tasmota has implemented a universal Display driver. Needs just an display descriptor file and a lot of display controllers and displays can be used. Some Infos here Code is based on Arduino
Example display descriptor to init a parallel RGB display The lib is here

[XanCraft21]

Ok, i will check that out soon. Thank you again.