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Merged
RomanAlexandroff merged 3 commits into from
Aug 19, 2026
Merged

Update GxEPD2 driver for GDEY075Z08 / UC8179 display #59

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87a12ce
fix printing the percent character in a debug message
RomanAlexandroff Aug 11, 2026
b068989
implement GxEPD2 library update
RomanAlexandroff Aug 12, 2026
d8ef8ee
remove debugging Telegram messages from the GxEPD2 library
RomanAlexandroff Aug 18, 2026
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459 changes: 0 additions & 459 deletions libraries/GxEPD2-master/README.md
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This file was deleted.

2 changes: 1 addition & 1 deletion libraries/GxEPD2-master/library.properties
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
name=GxEPD2
version=1.5.2
version=1.6.9
author=Jean-Marc Zingg
maintainer=Jean-Marc Zingg
sentence=Arduino Display Library for SPI E-Paper displays from Dalian Good Display and Waveshare.
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48 changes: 41 additions & 7 deletions libraries/GxEPD2-master/src/GxEPD2.h
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
// Requires HW SPI and Adafruit_GFX. Caution: these e-papers require 3.3V supply AND data lines!
// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
//
// based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
// Display Library based on Demo Example from Good Display: https://www.good-display.com/companyfile/32/
//
// Author: Jean-Marc Zingg
//
Expand Down Expand Up @@ -64,21 +64,33 @@ class GxEPD2
GDEM029T94,
GDEY029T94,
DEPG0290BS,
GDEY029T71H,
GDEW027W3, Waveshare_2_7_bw = GDEW027W3,
GDEY027T91,
GDEQ031T10,
ED037TC1,
GDEY037T03,
GDEW0371W7, Waveshare_3_7_bw = GDEW0371W7,
GDEM0397T81,
GDEW042T2, Waveshare_4_2_bw = GDEW042T2,
GDEW042M01,
GDEY042T91,
GDEY042T81,
GYE042A87,
SE0420NQ04,
GDEQ0426T82,
GDEH0576T81,
GDEY0579T93,
GDEW0583T7, Waveshare_5_83_bw = GDEW0583T7,
GDEW0583T8,
GDEQ0583T31,
GDEW075T8, Waveshare_7_5_bw = GDEW075T8,
GDEW075T7, Waveshare_7_5_bw_T7 = GDEW075T7,
GDEY075T7,
GDEM102T91,
GDEM1085T51,
GDEH116T91,
GDEW1248T3, Waveshare_12_24_bw = GDEW1248T3,
GDEM133T91,
ED060SCT, // on Waveshare IT8951 Driver HAT
ED060KC1, // on Waveshare IT8951 Driver HAT 1448x1072
ED078KC2, // on Waveshare IT8951 Driver HAT 1872x1404
Expand All @@ -96,15 +108,37 @@ class GxEPD2
GDEW027C44, Waveshare_2_7_bwr = GDEW027C44,
GDEW042Z15, Waveshare_4_2_bwr = GDEW042Z15,
GDEQ042Z21, Waveshare_4_2_V2_bwr = GDEQ042Z21,
GDEY042Z98,
GDEY0579Z93,
GDEQ0583Z31,
GDEW0583Z21, Waveshare_5_83_bwr = GDEW0583Z21,
GDEW0583Z83,
Waveshare437inch4color,
ACeP565, Waveshare_5_65_7c = ACeP565,
GDEY073D46,
GDEW075Z09, Waveshare_7_5_bwr = GDEW075Z09,
GDEW075Z08, Waveshare_7_5_bwr_Z08 = GDEW075Z08,
GDEY075Z08,
GDEH075Z90, Waveshare_7_5_bwr_Z90 = GDEH075Z90,
GDEY1248Z51
GDEY116Z91,
GDEY1248Z51,
GDEM133Z91,
// 4-color
GDEM0154F51H,
GDEY0213F51,
GDEY0266F51H,
GDEY029F51H,
Waveshare3inch4color,
GDEM035F51,
GDEM0397F81,
GDEY0420F51,
Waveshare437inch4color,
GDEY0579F51,
GDEM075F52,
GDEY116F51,
// 7-color
ACeP565, Waveshare_5_65_7c = ACeP565,
GDEP0565D90,
GDEY073D46,
ACeP730, Waveshare_7_30_7c = ACeP730,
GDEP073E01,
};
};

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53 changes: 37 additions & 16 deletions libraries/GxEPD2-master/src/GxEPD2_3C.h
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
// Requires HW SPI and Adafruit_GFX. Caution: these e-papers require 3.3V supply AND data lines!
// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
//
// based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
// Display Library based on Demo Example from Good Display: https://www.good-display.com/companyfile/32/
//
// Author: Jean-Marc Zingg
//
Expand Down Expand Up @@ -75,7 +75,7 @@
#if __has_include("epd3c/GxEPD2_266c.h")
#include "epd3c/GxEPD2_266c.h"
#endif
#if __has_include("epd3c/GxEPD2_150_BN.h")
#if __has_include("epd3c/GxEPD2_270c.h")
#include "epd3c/GxEPD2_270c.h"
#endif
#if __has_include("epd3c/GxEPD2_420c.h")
Expand All @@ -84,15 +84,21 @@
#if __has_include("epd3c/GxEPD2_420c_Z21.h")
#include "epd3c/GxEPD2_420c_Z21.h"
#endif
#if __has_include("gdey3c/GxEPD2_420c_GDEY042Z98.h")
#include "gdey3c/GxEPD2_420c_GDEY042Z98.h"
#endif
#if __has_include("gdey3c/GxEPD2_579c_GDEY0579Z93.h")
#include "gdey3c/GxEPD2_579c_GDEY0579Z93.h"
#endif
#if __has_include("epd3c/GxEPD2_583c.h")
#include "epd3c/GxEPD2_583c.h"
#endif
#if __has_include("gdeq3c/GxEPD2_583c_GDEQ0583Z31.h")
#include "gdeq3c/GxEPD2_583c_GDEQ0583Z31.h"
#endif
#if __has_include("epd3c/GxEPD2_583c_Z83.h")
#include "epd3c/GxEPD2_583c_Z83.h"
#endif
#if __has_include("epd7c/GxEPD2_565c.h")
#include "epd7c/GxEPD2_565c.h"
#endif
#if __has_include("epd3c/GxEPD2_750c.h")
#include "epd3c/GxEPD2_750c.h"
#endif
Expand All @@ -102,9 +108,21 @@
#if __has_include("epd3c/GxEPD2_750c_Z90.h")
#include "epd3c/GxEPD2_750c_Z90.h"
#endif
#if __has_include("epd3c/GxEPD2_750c_GDEW075Z08.h")
#include "epd3c/GxEPD2_750c_GDEW075Z08.h"
#endif
#if __has_include("gdey3c/GxEPD2_750c_GDEY075Z08.h")
#include "gdey3c/GxEPD2_750c_GDEY075Z08.h"
#endif
#if __has_include("gdey3c/GxEPD2_1160c_GDEY116Z91.h")
#include "gdey3c/GxEPD2_1160c_GDEY116Z91.h"
#endif
#if __has_include("epd3c/GxEPD2_1248c.h")
#include "epd3c/GxEPD2_1248c.h"
#endif
#if __has_include("gdem3c/GxEPD2_1330c_GDEM133Z91.h")
#include "gdem3c/GxEPD2_1330c_GDEM133Z91.h"
#endif

template<typename GxEPD2_Type, const uint16_t page_height>
class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
Expand Down Expand Up @@ -170,7 +188,7 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
y -= _current_page * _page_height;
// check if in current page
if ((y < 0) || (y >= int16_t(_page_height))) return;
uint16_t i = x / 8 + y * (_pw_w / 8);
uint32_t i = x / 8 + uint32_t(y) * uint32_t(_pw_w / 8);
_black_buffer[i] = (_black_buffer[i] | (1 << (7 - x % 8))); // white
_color_buffer[i] = (_color_buffer[i] | (1 << (7 - x % 8)));
if (color == GxEPD_WHITE) return;
Expand Down Expand Up @@ -224,7 +242,7 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
if (color == GxEPD_WHITE);
else if (color == GxEPD_BLACK) black = 0x00;
else if ((color == GxEPD_RED) || (color == GxEPD_YELLOW)) red = 0x00;
for (uint16_t x = 0; x < sizeof(_black_buffer); x++)
for (uint32_t x = 0; x < sizeof(_black_buffer); x++)
{
_black_buffer[x] = black;
_color_buffer[x] = red;
Expand Down Expand Up @@ -263,9 +281,9 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
w = gx_uint16_min(w, width() - x);
h = gx_uint16_min(h, height() - y);
_rotate(x, y, w, h);
epd2.writeImagePartNew(_black_buffer, x, y, GxEPD2_Type::WIDTH, _page_height, x, y, w, h);
epd2.writeImagePartToCurrent(_black_buffer, x, y, GxEPD2_Type::WIDTH, _page_height, x, y, w, h);
epd2.refresh_bw(x, y, w, h);
epd2.writeImagePartPrevious(_black_buffer, x, y, GxEPD2_Type::WIDTH, _page_height, x, y, w, h);
epd2.writeImagePartToPrevious(_black_buffer, x, y, GxEPD2_Type::WIDTH, _page_height, x, y, w, h);
}

void setFullWindow()
Expand Down Expand Up @@ -371,21 +389,24 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
}
}

bool nextPageToPrevious() {return false;}; // no-op in this class

bool nextPageBW()
{
if (1 == _pages)
{
if (_using_partial_mode)
{
epd2.writeImageNew(_black_buffer, _pw_x, _pw_y, _pw_w, _pw_h);
epd2.writeImageToCurrent(_black_buffer, _pw_x, _pw_y, _pw_w, _pw_h);
epd2.refresh_bw(_pw_x, _pw_y, _pw_w, _pw_h);
epd2.writeImagePrevious(_black_buffer, _pw_x, _pw_y, _pw_w, _pw_h);
epd2.writeImageToPrevious(_black_buffer, _pw_x, _pw_y, _pw_w, _pw_h);
epd2.writeImageToCurrent(_black_buffer, _pw_x, _pw_y, _pw_w, _pw_h);
}
else // full update
{
epd2.writeImage(_black_buffer, 0, 0, GxEPD2_Type::WIDTH, HEIGHT);
epd2.refresh(false);
epd2.writeImagePrevious(_black_buffer, 0, 0, GxEPD2_Type::WIDTH, HEIGHT);
epd2.writeImageToPrevious(_black_buffer, 0, 0, GxEPD2_Type::WIDTH, HEIGHT);
epd2.powerOff();
}
return false;
Expand All @@ -402,8 +423,8 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
{
//Serial.print("writeImage("); Serial.print(_pw_x); Serial.print(", "); Serial.print(dest_ys); Serial.print(", ");
//Serial.print(_pw_w); Serial.print(", "); Serial.print(dest_ye - dest_ys); Serial.println(")");
if (!_second_phase) epd2.writeImageNew(_black_buffer, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
else epd2.writeImagePrevious(_black_buffer, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
epd2.writeImageToCurrent(_black_buffer, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
if (_second_phase) epd2.writeImageToPrevious(_black_buffer, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
}
else
{
Expand All @@ -430,7 +451,7 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
else // full update
{
if (!_second_phase) epd2.writeImage(_black_buffer, 0, page_ys, GxEPD2_Type::WIDTH, gx_uint16_min(_page_height, HEIGHT - page_ys));
else epd2.writeImagePrevious(_black_buffer, 0, page_ys, GxEPD2_Type::WIDTH, gx_uint16_min(_page_height, HEIGHT - page_ys));
else epd2.writeImageToPrevious(_black_buffer, 0, page_ys, GxEPD2_Type::WIDTH, gx_uint16_min(_page_height, HEIGHT - page_ys));
_current_page++;
if (_current_page == _pages)
{
Expand Down
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