GxEPD2_AVR

Simplified Version of GxEPD for AVR 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 Arduino data pins, you may use e.g. 4k7 series resistor

Paged Drawing, Picture Loop

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

- 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 1.0.6

• added GxEPD2_AVR_SD_BitmapExample
• 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 1.0.2

• 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