GxEPD2_32

Simplified Version of GxEPD for 32 Bit Arduino

for SPI e-paper displays from Dalian Good Display

and SPI e-paper boards from Waveshare

important note :

- these displays are for 3.3V supply and 3.3V data lines.

- never connect data lines directly to 5V data pins.

- this version will not compile for or run on AVR Arduino.

Paged Drawing, Picture Loop

- This library uses paged drawing to limit RAM use and cope with missing single pixel update support

- buffer size can be adapted in the header files if needed; original value should be ok for normal use

- Paged drawing is implemented as picture loop, like in U8G2 (Oliver Kraus)

- see https://github.com/olikraus/u8glib/wiki/tpictureloop

Supporting Arduino Forum Topics:

• Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
• Good Dispay ePaper for Arduino : https://forum.arduino.cc/index.php?topic=436411.0

Version 1.0.11

• GxEPD2_32_Spiffs_Example, GxEPD2_32_Spiffs_Loader for ESP32

Version 1.0.10

• bitmap handling fixes

Version 1.0.9

• GxEPD2_32_SD_Example & GxEPD2_32_WiFi_Example for ESP32

Version 1.0.8

• interim update with fixes & enhancements to 1.0.7 & 1.0.6
• renamed GxEPD2_32_SD_BitmapExample to GxEPD2_32_SD_Example
• GxEPD2_32_WiFi_Example and GxEPD2_32_Spiffs_Loader have download issue with big downloads

Version 1.0.7

• added GxEPD2_32_Spiffs_Example
• added GxEPD2_32_Spiffs_Loader
• added GxEPD2_32_WiFi_Example

Version 1.0.6

• added GxEPD2_32_SD_BitmapExample

Version 1.0.5

• update and fix for additions of version 1.04

Version 1.0.4

• Support for Bitmaps (Sprites) to Controller Buffer and to Screen
• the bitmaps can reside in RAM or ROM, parameter pgm, default RAM
• origin x and width should be multiple of 8, are rounded down
• cropping to screen dimensions is handled
• allows tiled drawing for bitmaps from SD, SPIFFS or WiFi download
• use e.g. writeImage(...) for each tile, followed by refresh() for all

Version 1.0.3

• support for GDEW075Z09 7.5" 3-color moved to GxEPD2_32_3C
• not tested by me, but one user reported succesful use
• NOT RECOMMENDED, as it has extremely long refresh time reported

Version 1.0.2

• additional font support, e.g. from https://github.com/olikraus/U8g2_for_Adafruit_GFX

Version 1.0.1

• Example Bitmaps & 4.2" b/w fast partial update