// Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
//
// Display Library based on Demo Example from Good Display: https://www.good-display.com/companyfile/32/
//
// Author: Jean-Marc Zingg
//
// Version: see library.properties
//
// Library: https://github.com/ZinggJM/GxEPD2

// Supporting Arduino Forum Topics (closed, read only):
// Good Display ePaper for Arduino: https://forum.arduino.cc/t/good-display-epaper-for-arduino/419657
// Waveshare e-paper displays with SPI: https://forum.arduino.cc/t/waveshare-e-paper-displays-with-spi/467865
//
// Add new topics in https://forum.arduino.cc/c/using-arduino/displays/23 for new questions and issues

// see GxEPD2_wiring_examples.h for wiring suggestions and examples

// base class GxEPD2_GFX can be used to pass references or pointers to the display instance as parameter, uses ~1.2k more code
// enable or disable GxEPD2_GFX base class
#define ENABLE_GxEPD2_GFX 0

// uncomment next line to use class GFX of library GFX_Root instead of Adafruit_GFX
//#include <GFX.h>
// Note: if you use this with ENABLE_GxEPD2_GFX 1:
//       uncomment it in GxEPD2_GFX.h too, or add #include <GFX.h> before any #include <GxEPD2_GFX.h>

#include <GxEPD2_BW.h>
#include <GxEPD2_3C.h>
#include <GxEPD2_4C.h>
#include <GxEPD2_7C.h>
#include <Fonts/FreeMonoBold9pt7b.h>

// select the display class and display driver class in the following file (new style):
// note that many of these selections would require paged display to fit in ram
#include "GxEPD2_display_selection_new_style.h"

// or select the display constructor line below (old style), double commented out selections don't fit in ram:
// note: this list may not get updated with new panels

#if defined (ESP8266)
// select one and adapt to your mapping, can use full buffer size (full HEIGHT)
//GxEPD2_BW<GxEPD2_102, GxEPD2_102::HEIGHT> display(GxEPD2_102(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0102T4 80x128, UC8175
//GxEPD2_BW<GxEPD2_150_BN, GxEPD2_150_BN::HEIGHT> display(GxEPD2_150_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEP015OC1 200x200, IL3829, no longer available
//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154D67 200x200, SSD1681
//GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154T8  152x152, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200, JD79653A
//GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152, UC8151D
//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 128x250, IL3895, phased out
//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 128x250, SSD1675B
//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 128x250, SSD1680
//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213T5D 104x212, UC8151D
//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY027T91 176x264, SSD1680
//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH029A1 128x296, SSD1608 (IL3820)
//GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029T5 128x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029T5D 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_I6FD, GxEPD2_290_I6FD::HEIGHT> display(GxEPD2_290_I6FD(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029I6FD 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_T94, GxEPD2_290_T94::HEIGHT> display(GxEPD2_290_T94(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM029T94 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
//GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0290BS 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029M06  128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
//GxEPD2_BW<GxEPD2_310_GDEQ031T10, GxEPD2_310_GDEQ031T10::HEIGHT> display(GxEPD2_310_GDEQ031T10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEQ031T10 240x320, UC8253, (no inking, backside mark KEGMO 3100)
//GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0371W7 240x416, UC8171 (IL0324)
//GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW042T2 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW042M01 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_GDEY042T81, GxEPD2_420_GDEY042T81::HEIGHT> display(GxEPD2_420_GDEY042T81(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); GDEY042T81, 400x300, SSD1683 (no inking)
//GxEPD2_BW<GxEPD2_426_GDEQ0426T82, GxEPD2_426_GDEQ0426T82::HEIGHT> display(GxEPD2_426_GDEQ0426T82(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY042T81, 400x300, SSD1683 (no inking)
// can use only half buffer size
////GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
////GxEPD2_BW < GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT / 2 > display(GxEPD2_583_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
////GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
////GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075T7 800x480
// 3-color e-papers
//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154Z04 no longer available
//GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154Z90
//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
// can use only half buffer size
////GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT / 2> display(GxEPD2_420c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
// can use only quarter buffer size
////GxEPD2_3C < GxEPD2_583c, GxEPD2_583c::HEIGHT / 4 > display(GxEPD2_583c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
////GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
////GxEPD2_3C < GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z08 800x480
// 4-color e-paper
//GxEPD2_4C<GxEPD2_266c_GDEY0266F51H, GxEPD2_266c_GDEY0266F51H::HEIGHT> display(GxEPD2_266c_GDEY0266F51H(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_290c_GDEY029F51H, GxEPD2_290c_GDEY029F51H::HEIGHT> display(GxEPD2_290c_GDEY029F51H(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_300c, GxEPD2_300c::HEIGHT> display(GxEPD2_300c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 3.00" 4-color
//GxEPD2_4C<GxEPD2_420c_GDEY0420F51, GxEPD2_420c_GDEY0420F51::HEIGHT> display(GxEPD2_420c_GDEY0420F51(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_437c, GxEPD2_437c::HEIGHT> display(GxEPD2_437c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 4.37" 4-color
// grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
// HRDY -> 4, RST -> 2, CS -> SS(15), SCK -> SCK(14), MOSI -> MOSI(D7(13)), MISO -> MISO(D6(12)), GND -> GND, 5V -> 5V
// note: 5V supply needs to be exact and strong; 5V pin of USB powered Wemos D1 mini doesn't work!
////GxEPD2_BW<GxEPD2_it60, GxEPD2_it60::HEIGHT / 8> display(GxEPD2_it60(/*CS=5*/ SS, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 4));
////GxEPD2_BW < GxEPD2_it60_1448x1072, GxEPD2_it60_1448x1072::HEIGHT / 32 > display(GxEPD2_it60_1448x1072(/*CS=5*/ SS, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 4));

// ***** for mapping of Waveshare e-Paper ESP8266 Driver Board *****
// select one , can use full buffer size (full HEIGHT)
//GxEPD2_BW<GxEPD2_150_BN, GxEPD2_150_BN::HEIGHT> display(GxEPD2_150_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEP015OC1 200x200, IL3829, no longer available
//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0154D67 200x200, SSD1681
//GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154T8  152x152, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M09 200x200, JD79653A
//GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M10 152x152, UC8151D
//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 128x250, IL3895, phased out
//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 128x250, SSD1675B
//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 128x250, SSD1680
//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213T5D 104x212, UC8151D
//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027W3 176x264, EK79652 (IL91874)
//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY027T91 176x264, SSD1680
//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH029A1 128x296, SSD1608 (IL3820)
//GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029T5 128x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029T5D 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_I6FD, GxEPD2_290_I6FD::HEIGHT> display(GxEPD2_290_I6FD(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029I6FD 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_T94, GxEPD2_290_T94::HEIGHT> display(GxEPD2_290_T94(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM029T94 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
//GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0290BS 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029M06  128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
//GxEPD2_BW<GxEPD2_310_GDEQ031T10, GxEPD2_310_GDEQ031T10::HEIGHT> display(GxEPD2_310_GDEQ031T10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEQ031T10 240x320, UC8253, (no inking, backside mark KEGMO 3100)
//GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0371W7 240x416, UC8171 (IL0324)
//GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW042T2 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW042M01 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_GDEY042T81, GxEPD2_420_GDEY042T81::HEIGHT> display(GxEPD2_420_GDEY042T81(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); GDEY042T81, 400x300, SSD1683 (no inking)
//GxEPD2_BW<GxEPD2_426_GDEQ0426T82, GxEPD2_426_GDEQ0426T82::HEIGHT> display(GxEPD2_426_GDEQ0426T82(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEQ0426T82 480x800, SSD1677 (P426010-MF1-A)
// can use only half buffer size
////GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
////GxEPD2_BW < GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT / 2 > display(GxEPD2_583_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
////GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
////GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075T7 800x480
// 3-color e-papers
//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154Z04 no longer available
//GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0154Z90
//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
// can use only half buffer size
////GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT / 2> display(GxEPD2_420c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
// 4-color e-paper
//GxEPD2_4C<GxEPD2_266c_GDEY0266F51H, GxEPD2_266c_GDEY0266F51H::HEIGHT> display(GxEPD2_266c_GDEY0266F51H(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0266F51H 184x360, JD79667 (FPC-H006 22.04.02)
//GxEPD2_4C<GxEPD2_290c_GDEY029F51H, GxEPD2_290c_GDEY029F51H::HEIGHT> display(GxEPD2_290c_GDEY029F51H(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_300c, GxEPD2_300c::HEIGHT> display(GxEPD2_300c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 3.00" 4-color
//GxEPD2_4C<GxEPD2_420c_GDEY0420F51, GxEPD2_420c_GDEY0420F51::HEIGHT> display(GxEPD2_420c_GDEY0420F51(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0420F51 400x300, HX8717 (no inking)
//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 4.37" 4-color
// can use only quarter buffer size
////GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT / 4> display(GxEPD2_583c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
////GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
////GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z08 800x480
////GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH075Z90 880x528
// 7-color e-paper
////GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 5.65" 7-color
#endif

#if defined(ESP32)
// select one and adapt to your mapping, can use full buffer size (full HEIGHT)
//GxEPD2_BW<GxEPD2_102, GxEPD2_102::HEIGHT> display(GxEPD2_102(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0102T4 80x128, UC8175
//GxEPD2_BW<GxEPD2_150_BN, GxEPD2_150_BN::HEIGHT> display(GxEPD2_150_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEP015OC1 200x200, IL3829, no longer available
//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154D67 200x200, SSD1681
//GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154T8  152x152, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
//GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY027T91 176x264, SSD1680
//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH029A1 128x296, SSD1608 (IL3820)
//GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029T5 128x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029T5D 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_I6FD, GxEPD2_290_I6FD::HEIGHT> display(GxEPD2_290_I6FD(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029I6FD 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_T94, GxEPD2_290_T94::HEIGHT> display(GxEPD2_290_T94(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029T94 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
//GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0290BS 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029M06  128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
//GxEPD2_BW<GxEPD2_310_GDEQ031T10, GxEPD2_310_GDEQ031T10::HEIGHT> display(GxEPD2_310_GDEQ031T10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ031T10 240x320, UC8253, (no inking, backside mark KEGMO 3100)
//GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0371W7 240x416, UC8171 (IL0324)
//GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042T2 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042M01 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_GDEY042T81, GxEPD2_420_GDEY042T81::HEIGHT> display(GxEPD2_420_GDEY042T81(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); GDEY042T81, 400x300, SSD1683 (no inking)
//GxEPD2_BW<GxEPD2_426_GDEQ0426T82, GxEPD2_426_GDEQ0426T82::HEIGHT> display(GxEPD2_426_GDEQ0426T82(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ0426T82 480x800, SSD1677 (P426010-MF1-A)
//GxEPD2_BW<GxEPD2_583, GxEPD2_583::HEIGHT> display(GxEPD2_583(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583T7 600x448, UC8159c (IL0371)
//GxEPD2_BW<GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT> display(GxEPD2_583_T8(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583T8 648x480, EK79655 (GD7965)
//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT> display(GxEPD2_583_GDEQ0583T31(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
//GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075T8 640x384, UC8159c (IL0371)
//GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075T7 800x480, EK79655 (GD7965)
//GxEPD2_BW<GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT> display(GxEPD2_750_YT7(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY075T7 800x480, UC8179 (GD7965)
////GxEPD2_BW < GxEPD2_1160_T91, GxEPD2_1160_T91::HEIGHT / 2> display(GxEPD2_1160_T91(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH116T91 960x640, SSD1677
// 3-color e-papers
//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154Z04 200x200, IL0376F, no longer available
//GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154Z90 200x200, SSD1681
//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213Z16 104x212, UC8151 (IL0373)
//GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213Z19 104x212, UC8151D
//GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213Z98 122x250, SSD1680
//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0266Z90 152x296, SSD1680
//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44 176x264, IL91874
//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029Z10 128x296, UC8151 (IL0373)
//GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH029Z13 128x296, UC8151D
//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029C90 128x296, SSD1680
//GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042Z15 400x300, UC8176 (IL0398)
//GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT> display(GxEPD2_420c_Z21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ042Z21 400x300, UC8276
//GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z21 600x448, UC8179 (IL0371)
//GxEPD2_3C<GxEPD2_583c_Z83, GxEPD2_583c_Z83::HEIGHT> display(GxEPD2_583c_Z83(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z83 648x480, GD7965
//GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
//GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
////GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
// 4-color e-paper
//GxEPD2_4C<GxEPD2_266c_GDEY0266F51H, GxEPD2_266c_GDEY0266F51H::HEIGHT> display(GxEPD2_266c_GDEY0266F51H(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0266F51H 184x360, JD79667 (FPC-H006 22.04.02)
//GxEPD2_4C<GxEPD2_290c_GDEY029F51H, GxEPD2_290c_GDEY029F51H::HEIGHT> display(GxEPD2_290c_GDEY029F51H(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_300c, GxEPD2_300c::HEIGHT> display(GxEPD2_300c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 3.00" 4-color
//GxEPD2_4C<GxEPD2_420c_GDEY0420F51, GxEPD2_420c_GDEY0420F51::HEIGHT> display(GxEPD2_420c_GDEY0420F51(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0420F51 400x300, HX8717 (no inking)
//GxEPD2_4C<GxEPD2_437c, GxEPD2_437c::HEIGHT> display(GxEPD2_437c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color

// grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
// HRDY -> 4, RST -> 16, CS -> SS(5), SCK -> SCK(18), MOSI -> MOSI(23), MISO -> MISO(19), GND -> GND, 5V -> 5V
// note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
//GxEPD2_BW<GxEPD2_it60, GxEPD2_it60::HEIGHT> display(GxEPD2_it60(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4));
////GxEPD2_BW < GxEPD2_it60_1448x1072, GxEPD2_it60_1448x1072::HEIGHT / 4 > display(GxEPD2_it60_1448x1072(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4));
#endif

// can't use package "STMF1 Boards (STM32Duino.com)" (Roger Clark) anymore with Adafruit_GFX, use "STM32 Boards (selected from submenu)" (STMicroelectronics)
#if defined(ARDUINO_ARCH_STM32)
#define Serial Serial1 // for my proto board
#define MAX_DISPLAY_BUFFER_SIZE (16384ul + 184) // ~16k is a good compromise, (16384ul + 184) for GDEY0266F51H
#define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
// select one and adapt to your mapping
//GxEPD2_BW<GxEPD2_102, MAX_HEIGHT(GxEPD2_102)> display(GxEPD2_102(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0102T4 80x128, UC8175
//GxEPD2_BW<GxEPD2_150_BN, GxEPD2_150_BN::HEIGHT> display(GxEPD2_150_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEP015OC1 200x200, IL3829, no longer available
//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0154D67 200x200, SSD1681
//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154T8  152x152, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M09 200x200, JD79653A
//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M10 152x152, UC8151D
//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 122x250, IL3895, phased out
//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 122x250, SSD1675A (IL3897)
//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 122x250, SSD1675B
//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 122x250, SSD1680
//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213I5F 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213M21 104x212, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213T5D 104x212, UC8151D
//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027W3 176x264, EK79652 (IL91874)
//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY027T91 176x264, SSD1680
//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH029A1 128x296, SSD1608 (IL3820)
//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029T5 128x296, UC8151 (IL0373)
//GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029T5D 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_I6FD, MAX_HEIGHT(GxEPD2_290_I6FD)> display(GxEPD2_290_I6FD(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029I6FD 128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM029T94 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
//GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0290BS 128x296, SSD1680
//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029M06  128x296, UC8151D
//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
//GxEPD2_BW<GxEPD2_310_GDEQ031T10, MAX_HEIGHT(GxEPD2_310_GDEQ031T10)> display(GxEPD2_310_GDEQ031T10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ031T10 240x320, UC8253, (no inking, backside mark KEGMO 3100)
//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0371W7 240x416, UC8171 (IL0324)
//GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042T2 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042M01 400x300, UC8176 (IL0398)
//GxEPD2_BW<GxEPD2_420_GDEY042T81, MAX_HEIGHT(GxEPD2_420_GDEY042T81)> display(GxEPD2_420_GDEY042T81(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); GDEY042T81, 400x300, SSD1683 (no inking)
//GxEPD2_BW<GxEPD2_426_GDEQ0426T82, MAX_HEIGHT(GxEPD2_426_GDEQ0426T82)> display(GxEPD2_426_GDEQ0426T82(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ0426T82 480x800, SSD1677 (P426010-MF1-A)
////GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583T7 600x448, UC8159c (IL0371)
////GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583T8 648x480, EK79655 (GD7965)
////GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
////GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075T8 640x384, UC8159c (IL0371)
////GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075T7 800x480, EK79655 (GD7965)
////GxEPD2_BW<GxEPD2_750_GDEY075T7, MAX_HEIGHT(GxEPD2_750_GDEY075T7)> display(GxEPD2_750_GDEY075T7(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY075T7 800x480, UC8179 (GD7965)
////GxEPD2_BW < GxEPD2_1160_T91, MAX_HEIGHT(GxEPD2_1160_T91)> display(GxEPD2_1160_T91(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH116T91 960x640, SSD1677
// 3-color e-papers
#define MAX_HEIGHT_3C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154Z04 200x200, IL0376F, no longer available
//GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0154Z90 200x200, SSD1681
//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213Z16 104x212, UC8151 (IL0373)
//GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213Z19 104x212, UC8151D
//GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213Z98 122x250, SSD1680
//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0266Z90 152x296, SSD1680
//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027C44 176x264, IL91874
//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029Z10 128x296, UC8151 (IL0373)
//GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH029Z13 128x296, UC8151D
//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM029C90 128x296, SSD1680
////GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042Z15 400x300, UC8176 (IL0398)
////GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ042Z21 400x300, UC8276
////GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583Z21 600x448, UC8179 (IL0371)
////GxEPD2_3C<GxEPD2_583c_Z83, MAX_HEIGHT_3C(GxEPD2_583c_Z83)> display(GxEPD2_583c_Z83(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583Z83 648x480, GD7965
////GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z09 640x384, UC8179 (IL0371)
////GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z08 800x480, GD7965
////GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH075Z90 880x528, SSD1677
// 4-color e-paper
//GxEPD2_4C<GxEPD2_266c_GDEY0266F51H, MAX_HEIGHT_3C(GxEPD2_266c_GDEY0266F51H)> display(GxEPD2_266c_GDEY0266F51H(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0266F51H 184x360, JD79667 (FPC-H006 22.04.02)
//GxEPD2_4C<GxEPD2_290c_GDEY029F51H, MAX_HEIGHT_3C(GxEPD2_290c_GDEY029F51H)> display(GxEPD2_290c_GDEY029F51H(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY029F51H 168x384, JD79667 (FPC-H004 22.03.24)
//GxEPD2_4C<GxEPD2_300c, MAX_HEIGHT_3C(GxEPD2_300c)> display(GxEPD2_300c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 3.00" 4-color
////GxEPD2_4C<GxEPD2_420c_GDEY0420F51, MAX_HEIGHT_3C(GxEPD2_420c_GDEY0420F51)> display(GxEPD2_420c_GDEY0420F51(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0420F51 400x300, HX8717 (no inking)
////GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 4.37" 4-color
// 7-color e-paper
////#define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
////GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 5.65" 7-color
////GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
#undef MAX_DISPLAY_BUFFER_SIZE
#undef MAX_HEIGHT
#undef MAX_HEIGHT_3C
#undef MAX_HEIGHT_7C
#endif

#if !defined(__AVR) && !defined(STM32F1xx)

// comment out unused bitmaps to reduce code space used
#include "bitmaps/Bitmaps200x200.h" // 1.54" b/w
#include "bitmaps/Bitmaps104x212.h" // 2.13" b/w flexible GDEW0213I5F
#include "bitmaps/Bitmaps128x250.h" // 2.13" b/w
#include "bitmaps/Bitmaps128x296.h" // 2.9"  b/w
#include "bitmaps/Bitmaps176x264.h" // 2.7"  b/w
#include "bitmaps/Bitmaps400x300.h" // 4.2"  b/w
#include "bitmaps/Bitmaps640x384.h" // 7.5"  b/w
// 3-color
#include "bitmaps/Bitmaps3c200x200.h" // 1.54" b/w/r
#include "bitmaps/Bitmaps3c104x212.h" // 2.13" b/w/r
#include "bitmaps/Bitmaps3c128x296.h" // 2.9"  b/w/r
#include "bitmaps/Bitmaps3c176x264.h" // 2.7"  b/w/r
#include "bitmaps/Bitmaps3c400x300.h" // 4.2"  b/w/r
#if defined(ESP8266) || defined(ESP32)
#include "bitmaps/WS_Bitmaps800x600.h" // 6.0"  grey
#endif

#else

// select only one to fit in code space
#include "bitmaps/Bitmaps200x200.h" // 1.54" b/w
//#include "bitmaps/Bitmaps104x212.h" // 2.13" b/w flexible GDEW0213I5F
//#include "bitmaps/Bitmaps128x250.h" // 2.13" b/w
//#include "bitmaps/Bitmaps128x296.h" // 2.9"  b/w
//#include "bitmaps/Bitmaps176x264.h" // 2.7"  b/w
////#include "bitmaps/Bitmaps400x300.h" // 4.2"  b/w // not enough code space
////#include "bitmaps/Bitmaps640x384.h" // 7.5"  b/w // not enough code space
// 3-color
//#include "bitmaps/Bitmaps3c200x200.h" // 1.54" b/w/r
//#include "bitmaps/Bitmaps3c104x212.h" // 2.13" b/w/r
//#include "bitmaps/Bitmaps3c128x296.h" // 2.9"  b/w/r
//#include "bitmaps/Bitmaps3c176x264.h" // 2.7"  b/w/r
////#include "bitmaps/Bitmaps3c400x300.h" // 4.2"  b/w/r // not enough code space

#endif

// for handling alternative SPI pins (ESP32, RP2040) see example GxEPD2_Example.ino

void setup()
{
  Serial.begin(115200);
  Serial.println();
  Serial.println("setup");
  delay(100);
  //display.init(115200); // default 10ms reset pulse, e.g. for bare panels with DESPI-C02
  display.init(115200, true, 2, false); // USE THIS for Waveshare boards with "clever" reset circuit, 2ms reset pulse
  if (display.pages() > 1)
  {
    delay(100);
    Serial.print("pages = "); Serial.print(display.pages()); Serial.print(" page height = "); Serial.println(display.pageHeight());
    delay(1000);
    showPages();
    display.hibernate();
    return;
  }
  // first update should be full refresh
  helloWorld();
  delay(1000);
  // partial refresh mode can be used to full screen,
  // effective if display panel hasFastPartialUpdate
  helloFullScreenPartialMode();
  delay(1000);
  helloArduino();
  delay(1000);
  helloEpaper();
  delay(1000);
  //helloValue(123.9, 1);
  //delay(1000);
  showFont("FreeMonoBold9pt7b", &FreeMonoBold9pt7b);
  delay(1000);
  drawBitmaps();
  if (display.epd2.hasPartialUpdate)
  {
    showPartialUpdate();
    delay(1000);
  } // else // on GDEW0154Z04 only full update available, doesn't look nice
  //drawCornerTest();
  //showBox(16, 16, 48, 32, false);
  //showBox(16, 56, 48, 32, true);
  display.powerOff();
  deepSleepTest();
  Serial.println("setup done");
}

void loop()
{
}

void showPages()
{
  display.setRotation(0);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  display.clearScreen(0); // black
  display.setFullWindow();
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(0, 10);
  if (display.width() >= 300)
  {
    display.print("would need "); display.print(display.pages()); display.println(" pages of height "); display.print(display.pageHeight());
  }
  else
  {
    display.println("would need");
    display.print(display.pages()); display.println(" pages of");
    display.print("height "); display.print(display.pageHeight());
  }
  display.display(false); // full update
}

// note for partial update window and setPartialWindow() method:
// partial update window size and position is on byte boundary in physical x direction
// the size is increased in setPartialWindow() if x or w are not multiple of 8 for even rotation, y or h for odd rotation
// see also comment in GxEPD2_BW.h, GxEPD2_3C.h or GxEPD2_GFX.h for method setPartialWindow()

const char HelloWorld[] = "Hello World!";
const char HelloArduino[] = "Hello Arduino!";
const char HelloEpaper[] = "Hello E-Paper!";

void helloWorld()
{
  //Serial.println("helloWorld");
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  int16_t tbx, tby; uint16_t tbw, tbh;
  display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
  // center bounding box by transposition of origin:
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  uint16_t y = ((display.height() - tbh) / 2) - tby;
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(x, y);
  display.print(HelloWorld);
  display.display(false); // full update
  //Serial.println("helloWorld done");
}

void helloWorldForDummiesNotPaged()
{
  //Serial.println("helloWorld");
  const char text[] = "Hello World!";
  // most e-papers have width < height (portrait) as native orientation, especially the small ones
  // in GxEPD2 rotation 0 is used for native orientation (most TFT libraries use 0 fix for portrait orientation)
  // set rotation to 1 (rotate right 90 degrees) to have enough space on small displays (landscape)
  display.setRotation(1);
  // select a suitable font in Adafruit_GFX
  display.setFont(&FreeMonoBold9pt7b);
  // on e-papers black on white is more pleasant to read
  display.setTextColor(GxEPD_BLACK);
  // Adafruit_GFX has a handy method getTextBounds() to determine the boundary box for a text for the actual font
  int16_t tbx, tby; uint16_t tbw, tbh; // boundary box window
  display.getTextBounds(text, 0, 0, &tbx, &tby, &tbw, &tbh); // it works for origin 0, 0, fortunately (negative tby!)
  // center bounding box by transposition of origin:
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  uint16_t y = ((display.height() - tbh) / 2) - tby;
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  // here we use full buffered drawing
  // only part of the display is used if page_height is less than HEIGHT
  display.fillScreen(GxEPD_WHITE); // set the background to white (fill the buffer with value for white)
  display.setCursor(x, y); // set the postition to start printing text
  display.print(text); // print some text
  // tell the graphics class to transfer the buffer content (page) to the controller buffer
  // and to refresh to the screen
  display.display(false); // full update
  //Serial.println("helloWorld done");
}

void helloFullScreenPartialMode()
{
  //Serial.println("helloFullScreenPartialMode");
  const char fullscreen[] = "full screen update";
  const char fpm[] = "fast partial mode";
  const char spm[] = "slow partial mode";
  const char npm[] = "no partial mode";
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  const char* updatemode;
  if (display.epd2.hasFastPartialUpdate)
  {
    updatemode = fpm;
  }
  else if (display.epd2.hasPartialUpdate)
  {
    updatemode = spm;
  }
  else
  {
    updatemode = npm;
  }
  // do this outside of the loop
  int16_t tbx, tby; uint16_t tbw, tbh;
  // center update text
  display.getTextBounds(fullscreen, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t utx = ((display.width() - tbw) / 2) - tbx;
  uint16_t uty = ((display.height() / 4) - tbh / 2) - tby;
  // center update mode
  display.getTextBounds(updatemode, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t umx = ((display.width() - tbw) / 2) - tbx;
  uint16_t umy = ((display.height() * 3 / 4) - tbh / 2) - tby;
  // center HelloWorld
  display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t hwx = ((display.width() - tbw) / 2) - tbx;
  uint16_t hwy = ((display.height() - tbh) / 2) - tby;
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(hwx, hwy);
  display.print(HelloWorld);
  display.setCursor(utx, uty);
  display.print(fullscreen);
  display.setCursor(umx, umy);
  display.print(updatemode);
  display.display(true); // partial update
  //Serial.println("helloFullScreenPartialMode done");
}

void helloArduino()
{
  //Serial.println("helloArduino");
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
  int16_t tbx, tby; uint16_t tbw, tbh;
  // align with centered HelloWorld
  display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  // height might be different
  display.getTextBounds(HelloArduino, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t y = ((display.height() / 4) - tbh / 2) - tby; // y is base line!
  // make the window big enough to cover (overwrite) descenders of previous text
  uint16_t wh = FreeMonoBold9pt7b.yAdvance;
  uint16_t wy = (display.height() / 4) - wh / 2;
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  // DO NOT display.fillScreen(GxEPD_WHITE); keep current content!
  display.fillRect(0, wy, display.width(), wh, GxEPD_WHITE); // clear rect instead
  display.setCursor(x, y);
  display.print(HelloArduino);
  display.displayWindow(0, wy, display.width(), wh);
  delay(1000);
  //Serial.println("helloArduino done");
}

void helloEpaper()
{
  //Serial.println("helloEpaper");
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
  int16_t tbx, tby; uint16_t tbw, tbh;
  // align with centered HelloWorld
  display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  // height might be different
  display.getTextBounds(HelloEpaper, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t y = (display.height() * 3 / 4) + tbh / 2; // y is base line!
  // make the window big enough to cover (overwrite) descenders of previous text
  uint16_t wh = FreeMonoBold9pt7b.yAdvance;
  uint16_t wy = (display.height() * 3 / 4) - wh / 2;
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  // DO NOT display.fillScreen(GxEPD_WHITE); keep current content!
  display.fillRect(0, wy, display.width(), wh, GxEPD_WHITE); // clear rect instead
  display.setCursor(x, y);
  display.print(HelloEpaper);
  display.displayWindow(0, wy, display.width(), wh);
  //Serial.println("helloEpaper done");
}

#if defined(ESP8266) || defined(ESP32)
#include <StreamString.h>
#define PrintString StreamString
#else
class PrintString : public Print, public String
{
  public:
    size_t write(uint8_t data) override
    {
      return concat(char(data));
    };
};
#endif

void helloValue(double v, int digits)
{
  //Serial.println("helloValue");
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
  PrintString valueString;
  valueString.print(v, digits);
  int16_t tbx, tby; uint16_t tbw, tbh;
  display.getTextBounds(valueString, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  uint16_t y = (display.height() * 3 / 4) + tbh / 2; // y is base line!
  // show what happens, if we use the bounding box for partial window
  uint16_t wx = (display.width() - tbw) / 2;
  uint16_t wy = (display.height() * 3 / 4) - tbh / 2;
  // full window mode is the initial mode, set it anyway
  display.setFullWindow();
  // DO NOT display.fillScreen(GxEPD_WHITE); keep current content!
  display.fillRect(wx, wy, tbw, tbh, GxEPD_WHITE); // clear rect instead
  display.setCursor(x, y);
  display.print(valueString);
  display.displayWindow(wx, wy, tbw, tbh);
  delay(2000);
  // make the partial window big enough to cover the previous text
  uint16_t ww = tbw; // remember window width
  display.getTextBounds(HelloEpaper, 0, 0, &tbx, &tby, &tbw, &tbh);
  // adjust, because HelloEpaper was aligned, not centered (could calculate this to be precise)
  ww = max(ww, uint16_t(tbw + 12)); // 12 seems ok
  wx = (display.width() - tbw) / 2;
  // make the window big enough to cover (overwrite) descenders of previous text
  uint16_t wh = FreeMonoBold9pt7b.yAdvance;
  wy = (display.height() * 3 / 4) - wh / 2;
  // DO NOT display.fillScreen(GxEPD_WHITE); keep current content!
  display.fillRect(wx, wy, ww, wh, GxEPD_WHITE); // clear rect instead
  display.setCursor(x, y);
  display.print(valueString);
  display.displayWindow(wx, wy, ww, wh);
  // alternately use the whole width for partial window
  //display.displayWindow(wx, wy, display.width(), wh);
  //Serial.println("helloValue done");
}

void deepSleepTest()
{
  //Serial.println("deepSleepTest");
  const char hibernating[] = "hibernating ...";
  const char wokeup[] = "woke up";
  const char from[] = "from deep sleep";
  const char again[] = "again";
  display.setRotation(1);
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  int16_t tbx, tby; uint16_t tbw, tbh;
  // center text
  display.getTextBounds(hibernating, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  uint16_t y = ((display.height() - tbh) / 2) - tby;
  display.setFullWindow();
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(x, y);
  display.print(hibernating);
  display.display(false); // full update
  display.hibernate();
  delay(5000);
  display.getTextBounds(wokeup, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t wx = (display.width() - tbw) / 2;
  uint16_t wy = (display.height() / 3) + tbh / 2; // y is base line!
  display.getTextBounds(from, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t fx = (display.width() - tbw) / 2;
  uint16_t fy = (display.height() * 2 / 3) + tbh / 2; // y is base line!
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(wx, wy);
  display.print(wokeup);
  display.setCursor(fx, fy);
  display.print(from);
  display.display(false); // full update
  delay(5000);
  display.getTextBounds(hibernating, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t hx = (display.width() - tbw) / 2;
  uint16_t hy = (display.height() / 3) + tbh / 2; // y is base line!
  display.getTextBounds(again, 0, 0, &tbx, &tby, &tbw, &tbh);
  uint16_t ax = (display.width() - tbw) / 2;
  uint16_t ay = (display.height() * 2 / 3) + tbh / 2; // y is base line!
  display.fillScreen(GxEPD_WHITE);
  display.setCursor(hx, hy);
  display.print(hibernating);
  display.setCursor(ax, ay);
  display.print(again);
  display.display(false); // full update
  display.hibernate();
  //Serial.println("deepSleepTest done");
}

void showBox(uint16_t x, uint16_t y, uint16_t w, uint16_t h, bool partial)
{
  //Serial.println("showBox");
  display.setRotation(1);
  display.setFullWindow();
  display.fillScreen(GxEPD_WHITE);
  display.fillRect(x, y, w, h, GxEPD_BLACK);
  if (partial)
  {
    display.displayWindow(x, y, w, h);
  }
  else
  {
    display.display(false); // full update
  }
  //Serial.println("showBox done");
}

void drawCornerTest()
{
  display.setFullWindow();
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  for (uint16_t r = 0; r <= 4; r++)
  {
    display.setRotation(r);
    display.fillScreen(GxEPD_WHITE);
    display.fillRect(0, 0, 8, 8, GxEPD_BLACK);
    display.fillRect(display.width() - 18, 0, 16, 16, GxEPD_BLACK);
    display.fillRect(display.width() - 25, display.height() - 25, 24, 24, GxEPD_BLACK);
    display.fillRect(0, display.height() - 33, 32, 32, GxEPD_BLACK);
    display.setCursor(display.width() / 2, display.height() / 2);
    display.print(display.getRotation());
    display.display(false); // full update
    delay(2000);
  }
}

void showFont(const char name[], const GFXfont* f)
{
  display.setFullWindow();
  display.setRotation(0);
  display.setTextColor(GxEPD_BLACK);
  drawFont(name, f);
  display.display(false); // full update
}

void drawFont(const char name[], const GFXfont* f)
{
  //display.setRotation(0);
  display.fillScreen(GxEPD_WHITE);
  display.setTextColor(GxEPD_BLACK);
  display.setFont(f);
  display.setCursor(0, 0);
  display.println();
  display.println(name);
  display.println(" !\"#$%&'()*+,-./");
  display.println("0123456789:;<=>?");
  display.println("@ABCDEFGHIJKLMNO");
  display.println("PQRSTUVWXYZ[\\]^_");
  if (display.epd2.hasColor)
  {
    display.setTextColor(GxEPD_RED);
  }
  display.println("`abcdefghijklmno");
  display.println("pqrstuvwxyz{|}~ ");
}

// note for partial update window and setPartialWindow() method:
// partial update window size and position is on byte boundary in physical x direction
// the size is increased in setPartialWindow() if x or w are not multiple of 8 for even rotation, y or h for odd rotation
// see also comment in GxEPD2_BW.h, GxEPD2_3C.h or GxEPD2_GFX.h for method setPartialWindow()
// showPartialUpdate() purposely uses values that are not multiples of 8 to test this

void showPartialUpdate()
{
  // some useful background
  helloWorld();
  // use asymmetric values for test
  uint16_t box_x = 10;
  uint16_t box_y = 15;
  uint16_t box_w = 70;
  uint16_t box_h = 20;
  uint16_t cursor_y = box_y + box_h - 6;
  float value = 13.95;
  uint16_t incr = display.epd2.hasFastPartialUpdate ? 1 : 3;
  display.setFont(&FreeMonoBold9pt7b);
  display.setTextColor(GxEPD_BLACK);
  display.setFullWindow();
  // show where the update box is
  for (uint16_t r = 0; r < 4; r++)
  {
    display.setRotation(r);
    display.fillRect(box_x, box_y, box_w, box_h, GxEPD_BLACK);
    //display.fillScreen(GxEPD_BLACK);
    display.displayWindow(box_x, box_y, box_w, box_h);
    delay(2000);
    display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
    display.displayWindow(box_x, box_y, box_w, box_h);
    delay(1000);
  }
  //return;
  // show updates in the update box
  for (uint16_t r = 0; r < 4; r++)
  {
    display.setRotation(r);
    for (uint16_t i = 1; i <= 10; i += incr)
    {
      display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
      display.setCursor(box_x, cursor_y);
      display.print(value * i, 2);
      display.displayWindow(box_x, box_y, box_w, box_h);
      delay(500);
    }
    delay(1000);
    display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
    display.displayWindow(box_x, box_y, box_w, box_h);
    delay(1000);
  }
}


void drawBitmaps()
{
  display.setFullWindow();
#ifdef _GxBitmaps104x212_H_
  drawBitmaps104x212();
#endif
#ifdef _GxBitmaps128x250_H_
  drawBitmaps128x250();
#endif
#ifdef _GxBitmaps128x296_H_
  drawBitmaps128x296();
#endif
#ifdef _GxBitmaps176x264_H_
  drawBitmaps176x264();
#endif
#ifdef _GxBitmaps400x300_H_
  drawBitmaps400x300();
#endif
#ifdef _GxBitmaps640x384_H_
  drawBitmaps640x384();
#endif
#ifdef _WS_Bitmaps800x600_H_
  drawBitmaps800x600();
#endif
  // 3-color
#ifdef _GxBitmaps3c104x212_H_
  drawBitmaps3c104x212();
#endif
#ifdef _GxBitmaps3c128x296_H_
  drawBitmaps3c128x296();
#endif
#ifdef _GxBitmaps3c176x264_H_
  drawBitmaps3c176x264();
#endif
#ifdef _GxBitmaps3c400x300_H_
  drawBitmaps3c400x300();
#endif
  // show these after the specific bitmaps
#ifdef _GxBitmaps200x200_H_
  drawBitmaps200x200();
#endif
  // 3-color
#ifdef _GxBitmaps3c200x200_H_
  drawBitmaps3c200x200();
#endif
}

#ifdef _GxBitmaps200x200_H_
void drawBitmaps200x200()
{
#if defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    logo200x200, first200x200 //, second200x200, third200x200, fourth200x200, fifth200x200, sixth200x200, senventh200x200, eighth200x200
  };
#elif defined(_BOARD_GENERIC_STM32F103C_H_)
  const unsigned char* bitmaps[] =
  {
    logo200x200, first200x200, second200x200, third200x200, fourth200x200, fifth200x200 //, sixth200x200, senventh200x200, eighth200x200
  };
#else
  const unsigned char* bitmaps[] =
  {
    logo200x200, first200x200, second200x200, third200x200, fourth200x200, fifth200x200, sixth200x200, senventh200x200, eighth200x200
  };
#endif
  if ((display.epd2.panel == GxEPD2::GDEP015OC1) || (display.epd2.panel == GxEPD2::GDEH0154D67))
  {
    bool m = display.mirror(true);
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
    display.mirror(m);
  }
  //else
  {
    bool mirror_y = (display.epd2.panel != GxEPD2::GDE0213B1);
    display.clearScreen(); // use default for white
    int16_t x = (int16_t(display.epd2.WIDTH) - 200) / 2;
    int16_t y = (int16_t(display.epd2.HEIGHT) - 200) / 2;
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.drawImage(bitmaps[i], x, y, 200, 200, false, mirror_y, true);
      delay(2000);
    }
  }
  bool mirror_y = (display.epd2.panel != GxEPD2::GDE0213B1);
  for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
  {
    int16_t x = -60;
    int16_t y = -60;
    for (uint16_t j = 0; j < 10; j++)
    {
      display.writeScreenBuffer(); // use default for white
      display.writeImage(bitmaps[i], x, y, 200, 200, false, mirror_y, true);
      display.refresh(true);
      if (display.epd2.hasFastPartialUpdate)
      {
        // for differential update: set previous buffer equal to current buffer in controller
        display.epd2.writeScreenBufferAgain(); // use default for white
        display.epd2.writeImageAgain(bitmaps[i], x, y, 200, 200, false, mirror_y, true);
      }
      delay(2000);
      x += 40;
      y += 40;
      if ((x >= int16_t(display.epd2.WIDTH)) || (y >= int16_t(display.epd2.HEIGHT))) break;
    }
    if (!display.epd2.hasFastPartialUpdate) break; // comment out for full show
    break; // comment out for full show
  }
  display.writeScreenBuffer(); // use default for white
  display.writeImage(bitmaps[0], int16_t(0), 0, 200, 200, false, mirror_y, true);
  display.writeImage(bitmaps[0], int16_t(int16_t(display.epd2.WIDTH) - 200), int16_t(display.epd2.HEIGHT) - 200, 200, 200, false, mirror_y, true);
  display.refresh(true);
  delay(2000);
}
#endif

#ifdef _GxBitmaps104x212_H_
void drawBitmaps104x212()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    WS_Bitmap104x212, Bitmap104x212_1, Bitmap104x212_2, Bitmap104x212_3
  };
#else
  const unsigned char* bitmaps[] =
  {
    WS_Bitmap104x212, Bitmap104x212_1, Bitmap104x212_2, Bitmap104x212_3
  };
#endif
  if (display.epd2.panel == GxEPD2::GDEW0213I5F)
  {
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps128x250_H_
void drawBitmaps128x250()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    Bitmap128x250_1, logo128x250, first128x250, second128x250, third128x250
  };
#else
  const unsigned char* bitmaps[] =
  {
    Bitmap128x250_1, logo128x250, first128x250, second128x250, third128x250
  };
#endif
  if ((display.epd2.panel == GxEPD2::GDE0213B1) || (display.epd2.panel == GxEPD2::GDEH0213B72))
  {
    bool m = display.mirror(true);
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
    display.mirror(m);
  }
}
#endif

#ifdef _GxBitmaps128x296_H_
void drawBitmaps128x296()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    Bitmap128x296_1, logo128x296, first128x296, second128x296, third128x296
  };
#else
  const unsigned char* bitmaps[] =
  {
    Bitmap128x296_1, logo128x296 //, first128x296, second128x296, third128x296
  };
#endif
  if (display.epd2.panel == GxEPD2::GDEH029A1)
  {
    bool m = display.mirror(true);
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
    display.mirror(m);
  }
}
#endif

#ifdef _GxBitmaps176x264_H_
void drawBitmaps176x264()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    Bitmap176x264_1, Bitmap176x264_2, Bitmap176x264_3, Bitmap176x264_4, Bitmap176x264_5
  };
#else
  const unsigned char* bitmaps[] =
  {
    Bitmap176x264_1, Bitmap176x264_2 //, Bitmap176x264_3, Bitmap176x264_4, Bitmap176x264_5
  };
#endif
  if (display.epd2.panel == GxEPD2::GDEW027W3)
  {
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps400x300_H_
void drawBitmaps400x300()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    Bitmap400x300_1, Bitmap400x300_2
  };
#else
  const unsigned char* bitmaps[] = {}; // not enough code space
#endif
  if (display.epd2.panel == GxEPD2::GDEW042T2)
  {
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps640x384_H_
void drawBitmaps640x384()
{
#if !defined(__AVR)
  const unsigned char* bitmaps[] =
  {
    Bitmap640x384_1, Bitmap640x384_2
  };
#else
  const unsigned char* bitmaps[] = {}; // not enough code space
#endif
  if ((display.epd2.panel == GxEPD2::GDEW075T8) || (display.epd2.panel == GxEPD2::GDEW075Z09))
  {
    for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char*); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _WS_Bitmaps800x600_H_
void drawBitmaps800x600()
{
#if defined(ESP8266) || defined(ESP32)
  if (display.epd2.panel == GxEPD2::ED060SCT)
  {
    //    Serial.print("sizeof(WS_zoo_800x600) is "); Serial.println(sizeof(WS_zoo_800x600));
    display.drawNative(WS_zoo_800x600, 0, 0, 0, 800, 600, false, false, true);
    delay(2000);
    //    Serial.print("sizeof(WS_pic_1200x825) is "); Serial.println(sizeof(WS_pic_1200x825));
    //    display.drawNative((const uint8_t*)WS_pic_1200x825, 0, 0, 0, 1200, 825, false, false, true);
    //    delay(2000);
    //    Serial.print("sizeof(WS_acaa_1024x731) is "); Serial.println(sizeof(WS_acaa_1024x731));
    //    display.drawNative(WS_acaa_1024x731, 0, 0, 0, 1024, 731, false, false, true);
    //    delay(2000);
  }
#endif
}
#endif

struct bitmap_pair
{
  const unsigned char* black;
  const unsigned char* red;
};

#ifdef _GxBitmaps3c200x200_H_
void drawBitmaps3c200x200()
{
  bitmap_pair bitmap_pairs[] =
  {
    //{Bitmap3c200x200_black, Bitmap3c200x200_red},
    {WS_Bitmap3c200x200_black, WS_Bitmap3c200x200_red}
  };
  if (display.epd2.panel == GxEPD2::GDEW0154Z04)
  {
    display.fillScreen(GxEPD_WHITE);
    // Bitmap3c200x200_black has 2 bits per pixel
    // taken from Adafruit_GFX.cpp, modified
    int16_t byteWidth = (display.epd2.WIDTH + 7) / 8; // Bitmap scanline pad = whole byte
    uint8_t byte = 0;
    for (int16_t j = 0; j < display.epd2.HEIGHT; j++)
    {
      for (int16_t i = 0; i < display.epd2.WIDTH; i++)
      {
        if (i & 3) byte <<= 2;
        else
        {
#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
          byte = pgm_read_byte(&Bitmap3c200x200_black[j * byteWidth * 2 + i / 4]);
#else
          byte = Bitmap3c200x200_black[j * byteWidth * 2 + i / 4];
#endif
        }
        if (!(byte & 0x80))
        {
          display.drawPixel(i, j, GxEPD_BLACK);
        }
      }
    }
    display.drawInvertedBitmap(0, 0, Bitmap3c200x200_red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
    display.display();
    delay(2000);
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      display.display();
      delay(2000);
    }
  }
  if (display.epd2.hasColor)
  {
    display.clearScreen(); // use default for white
    int16_t x = (int16_t(display.epd2.WIDTH) - 200) / 2;
    int16_t y = (int16_t(display.epd2.HEIGHT) - 200) / 2;
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.drawImage(bitmap_pairs[i].black, bitmap_pairs[i].red, x, y, 200, 200, false, false, true);
      delay(2000);
    }
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      int16_t x = -60;
      int16_t y = -60;
      for (uint16_t j = 0; j < 10; j++)
      {
        display.writeScreenBuffer(); // use default for white
        display.writeImage(bitmap_pairs[i].black, bitmap_pairs[i].red, x, y, 200, 200, false, false, true);
        display.refresh();
        delay(1000);
        x += 40;
        y += 40;
        if ((x >= int16_t(display.epd2.WIDTH)) || (y >= int16_t(display.epd2.HEIGHT))) break;
      }
    }
    display.writeScreenBuffer(); // use default for white
    display.writeImage(bitmap_pairs[0].black, bitmap_pairs[0].red, 0, 0, 200, 200, false, false, true);
    display.writeImage(bitmap_pairs[0].black, bitmap_pairs[0].red, int16_t(display.epd2.WIDTH) - 200, int16_t(display.epd2.HEIGHT) - 200, 200, 200, false, false, true);
    display.refresh();
    delay(2000);
  }
}
#endif

#ifdef _GxBitmaps3c104x212_H_
void drawBitmaps3c104x212()
{
#if !defined(__AVR)
  bitmap_pair bitmap_pairs[] =
  {
    {Bitmap3c104x212_1_black, Bitmap3c104x212_1_red},
    {Bitmap3c104x212_2_black, Bitmap3c104x212_2_red},
    {WS_Bitmap3c104x212_black, WS_Bitmap3c104x212_red}
  };
#else
  bitmap_pair bitmap_pairs[] =
  {
    {Bitmap3c104x212_1_black, Bitmap3c104x212_1_red},
    //{Bitmap3c104x212_2_black, Bitmap3c104x212_2_red},
    {WS_Bitmap3c104x212_black, WS_Bitmap3c104x212_red}
  };
#endif
  if (display.epd2.panel == GxEPD2::GDEW0213Z16)
  {
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      if (bitmap_pairs[i].red == WS_Bitmap3c104x212_red)
      {
        display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      }
      else display.drawBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps3c128x296_H_
void drawBitmaps3c128x296()
{
#if !defined(__AVR)
  bitmap_pair bitmap_pairs[] =
  {
    {Bitmap3c128x296_1_black, Bitmap3c128x296_1_red},
    {Bitmap3c128x296_2_black, Bitmap3c128x296_2_red},
    {WS_Bitmap3c128x296_black, WS_Bitmap3c128x296_red}
  };
#else
  bitmap_pair bitmap_pairs[] =
  {
    //{Bitmap3c128x296_1_black, Bitmap3c128x296_1_red},
    //{Bitmap3c128x296_2_black, Bitmap3c128x296_2_red},
    {WS_Bitmap3c128x296_black, WS_Bitmap3c128x296_red}
  };
#endif
  if (display.epd2.panel == GxEPD2::GDEW029Z10)
  {
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      if (bitmap_pairs[i].red == WS_Bitmap3c128x296_red)
      {
        display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      }
      else display.drawBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps3c176x264_H_
void drawBitmaps3c176x264()
{
  bitmap_pair bitmap_pairs[] =
  {
    {Bitmap3c176x264_black, Bitmap3c176x264_red}
  };
  if (display.epd2.panel == GxEPD2::GDEW027C44)
  {
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.drawBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      display.display();
      delay(2000);
    }
  }
}
#endif

#ifdef _GxBitmaps3c400x300_H_
void drawBitmaps3c400x300()
{
#if !defined(__AVR)
  bitmap_pair bitmap_pairs[] =
  {
    {Bitmap3c400x300_1_black, Bitmap3c400x300_1_red},
    {Bitmap3c400x300_2_black, Bitmap3c400x300_2_red},
    {WS_Bitmap3c400x300_black, WS_Bitmap3c400x300_red}
  };
#else
  bitmap_pair bitmap_pairs[] = {}; // not enough code space
#endif
  if (display.epd2.panel == GxEPD2::GDEW042Z15)
  {
    for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
    {
      display.fillScreen(GxEPD_WHITE);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
      display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
      display.display();
      delay(2000);
    }
  }
}
#endif