Interfacing OLED with ESP32 WROOM32

[pacman22]

I want to connect two OLED display modules to ESP32. I want these OLEDs to display the same image at the same time. Will daisy chaining these two displays work? These displays will be communicating over 4-wire SPI.​

Display: https://www.waveshare.com/1.5inch-rgb-oled-module.htm
ESP32WROOM32: https://www.espressif.com/sites/def...2-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

 

[KlausST]

Hi,

Instead of daisy chaining them, I´d rather parallel connect them.

I just recognized the OLEDs don´t even have a data output ... then how is your idea to daisy chaining them at all?

For independent access they offer the CS signal .. on the same SPI bus.

Klaus

 

[FvM]

Sounds feasible.

 

[pacman22]

Hi,

Instead of daisy chaining them, I´d rather parallel connect them.

I just recognized the OLEDs don´t even have a data output ... then how is your idea to daisy chaining them at all?

For independent access they offer the CS signal .. on the same SPI bus.

Klaus

Share all SPI signals among both the displays including chip select. Is this what you mean?

 

[KlausST]

Is this what you mean?

Exactly.

Since there is no signal back from display to microcontroller, I see no reason for problems.

Klaus

 

[pacman22]

Exactly.

Since there is no signal back from display to microcontroller, I see no reason for problems.

Klaus

Thanks!

 

[danadakk]

Will both displays be observable in the same visual field ?

Asking because the controllers in the OLED display have asych processes,
and you could see artifacts possibly in both displays that would be observable from
same point of view.


Regards, Dana.