RealNobser / EPD_Driver_GU_small

Hardware driver for small-sized screens, with built-in images for test

Introduction

• This library code implements the driving code of Aurora(V231) or Spectra EPDs with iTC driver made by Pervasive Displays Inc (PDi). This is compatible with either EPD Extension Kit Gen 2 (EXT2) and EPD Extension Kit Gen 3 (EXT3).
• It implements the global update mode (GU). However, the same code for fast and partial update are shared upon request. Contact PDi for further details.
• The library supports the following EPD sizes: 1.54", 2.13", 2.66", 2.71", 2.87", 3.70", 4.20", 4.37"
• This library was tested with Launchpad (Tiva-C) with TM4C123, MSP432P401R, Arduino M0 Pro, Raspberry Pi Pico, and ESP32DevKitC.

Installation

Download the ZIP file of this library and install as instructed in Arduino or Energia.

Hardware Setup

• If using Launchpad (Tiva-C) with TM4C123 or MSP432P401R, the SPI pins are by default:

// Using EXT3
    SCK = 7     // BROWN
    BUSY = 11   // RED
    D/C = 12    // ORANGE
    RST = 13    // YELLOW
    MOSI = 15   // BLUE
    ECSM = 19   // GRAY
    
 // Using EXT2
    SCK = 7    
    BUSY = 8  
    D/C = 9
    RST = 10
    MOSI = 15
    ECSM = 19
    PNLON = 11
    BS = 17

• If using Arduino M0 Pro,

  SCK = 13 
  BUSY = 4  
  D/C = 5
  RST = 6
  MOSI = 12
  ECSM = 8
  PNLON = 11	only for EXT2
  BS = 9	only for EXT2

• If using Raspberry Pi Pico,

  SCK = 18 
  BUSY = 13  
  D/C = 12
  RST = 11
  MOSI = 19
  ECSM = 17
  PNLON = 8	only for EXT2
  BS = 7	only for EXT2

• If using ESP32DevKitC,

  SCK = 18 
  BUSY = 27  
  D/C = 26
  RST = 25
  MOSI = 23
  ECSM = 32
  PNLON = 16	only for EXT2
  BS = 17	only for EXT2

For further wiring guidance, check out the User Manuals of EXT2 and EXT3.

EPD_Driver Demo

• The sample code implements a global update functionality for a 2.71" Spectra R2.0 EPD (CE2271JS094).

First, a BW(black and white) image is flashed.

After a second, a BWR (black, white, red) image follows.

• The demo currently includes sample images for all the supported EPD sizes mentioned above. To implement global update demo on these other sizes, update the following lines

//------------------------------------------------------------
// DEMO Image Set <Comment out when in User Mode>
// Screen Size: 154, 213, 266, 271, 287, 370, 420, 437
#define SCREEN 271
#include "globalupdate_src/demoImageData.h"
// User Mode Image Set
//#include "globalupdate_src/userImageData.h"

• Then select the appropriate EPD size, development board and extension kit:

  // EPD_Driver epdtest(eScreen_EPD_271, boardLaunchPad_EXT3);
  // EPD_Driver epdtest(eScreen_EPD_271, boardArduinoM0Pro_EXT2);
  EPD_Driver epdtest(eScreen_EPD_271, boardRaspberryPiPico_RP2040_EXT3);
  // EPD_Driver epdtest(eScreen_EPD_271, boardRaspberryPiPico_RP2040_EXT2);

Tech Support

• For more information, please visit Pervasive Displays, Inc. (龍亭新技股份有限公司)
• PDI Wiki
• PDi Product Line up
• EPD Extension Kit Gen 2 (EXT2)
• EPD Extension Kit Gen 3 (EXT3)
• 24/7 Support Service