[Help] Waveshare ESP32 E-Paper Driver + Pervasive E2266JS0C2 + GxEPD2

[ioio82]

Hi everyone,

I'm trying to get a Pervasive Displays E2266JS0C2 (2.66" e-paper, 152x296, 24-pin edp) working with the Waveshare ESP32 E-Paper Driver Board using the GxEPD2 library, but I’m running into issues.

My Setup:

• Display: Pervasive Displays E2266JS0C2 (2.66", 152x296) Datasheet: (Access to this page has been denied.)
  Repository(?) (GitHub - PervasiveDisplays/EPD_Driver_GU_small: Hardware driver for small-sized screens, with built-in images for test)
• Driver Board: Waveshare ESP32 E-Paper Driver Board (https://www.waveshare.com/wiki/E-Paper_ESP32_Driver_Board)
• Library: GxEPD2
• Wiring: Connected based on the Waveshare board’s SPI pinout
• Power Supply: 3.3V directly from the ESP32

Issues:

1. No response from the display – The screen remains blank.

Questions:

• Has anyone successfully used a Pervasive Displays panel with GxEPD2?
• Do I need to modify an existing GxEPD2 driver for similar displays?
• Could there be an issue with the pinout or power requirements?

I uncommented the #define GxEPD2_DRIVER_CLASS GxEPD2_266c // GDEY0266Z90 152x296, SSD1680, (FPC-7510) line in the GxEPD2_display_selection_new_style.h file for the Hello World example.

Any help or pointers would be greatly appreciated!

Thanks in advance!

[silentobserver]

A quick look at
EPD_Driver_GU_small/src/EPD_Driver.cpp at main · PervasiveDisplays/EPD_Driver_GU_small · GitHub
shows only few register accesses (commands). These are not of the SSD kind of commands, but rather the UltraChip kind. But the controller chip most likely is pervasive proprietary.

GxEPD2 currently has 252 forks. No chance to look for any fork that supports any pervasive display.

Remains the slight chance someone knows about such support and answers.