Hello,
Finally i can write in all the display:
https://forum.arduino.cc/index.php?topic=548059.0
Now my new issue is the "partial update", i see all the examples about this feature in the GxEPD and GxEPD2_AVR libraries and only i can update one line, but if i want to update two or more i can't.
Anyway i don't understand the code for partial update, the code looks like different in both libraries for this feature.
Display: 2,13" B/W Waveshare.
This is my best try (for Arduino Mega and GxEPD2_AVR Library):
// Display Library example 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!
//
// based on Demo Example from Good Display: http://www.good-display.com/download_list/downloadcategoryid=34&isMode=false.html
//
// Author: Jean-Marc Zingg
//
// Version: see library.properties
//
// Library: https://github.com/ZinggJM/GxEPD2_AVR
// 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
// mapping suggestion from Waveshare SPI e-Paper to Wemos D1 mini
// BUSY -> D2, RST -> D4, DC -> D3, CS -> D8, CLK -> D5, DIN -> D7, GND -> GND, 3.3V -> 3.3V
// mapping suggestion from Waveshare SPI e-Paper to generic ESP8266
// BUSY -> GPIO4, RST -> GPIO2, DC -> GPIO0, CS -> GPIO15, CLK -> GPIO14, DIN -> GPIO13, GND -> GND, 3.3V -> 3.3V
// mapping suggestion for ESP32, e.g. LOLIN32, see .../variants/.../pins_arduino.h for your board
// NOTE: there are variants with different pins for SPI ! CHECK SPI PINS OF YOUR BOARD
// BUSY -> 4, RST -> 16, DC -> 17, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
// new mapping suggestion for STM32F1, e.g. STM32F103C8T6 "BluePill"
// BUSY -> A1, RST -> A2, DC -> A3, CS-> A4, CLK -> A5, DIN -> A7
// mapping suggestion for AVR, UNO, NANO etc.
// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 13, DIN -> 11
#include <GxEPD2_AVR_BW.h>
//#include <GxEPD2_AVR_3C.h>
#include <Fonts/FreeMonoBold9pt7b.h>
// select only the bitmaps for your display to reduce code space used, or de-select all
//#include "bitmaps/Bitmaps200x200.h" // 1.54" b/w
#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 // does not work (code size)
//#include "bitmaps/Bitmaps640x384.h" // 7.5" b/w // does not work (code size)
// 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
// select one and adapt to your mapping
//GxEPD2_AVR_BW display(GxEPD2::GDEP015OC1, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
GxEPD2_AVR_BW display(GxEPD2::GDE0213B1, /*CS=*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7);
//GxEPD2_AVR_BW display(GxEPD2::GDEH029A1, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_BW display(GxEPD2::GDEW027W3, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_BW display(GxEPD2::GDEW042T2, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_BW display(GxEPD2::GDEW075T8, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
// 3-color e-papers
//GxEPD2_AVR_3C display(GxEPD2::GDEW0154Z04, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_3C display(GxEPD2::GDEW0213Z16, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_3C display(GxEPD2::GDEW029Z10, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_3C display(GxEPD2::GDEW027C44, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
//GxEPD2_AVR_3C display(GxEPD2::GDEW042Z15, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7);
void setup()
{
display.init();
}
void loop()
{
//display.init();
helloWorld();
delay(50);
helloWorld2();
delay(50);
helloWorld3();
delay(50);
}
void helloWorld()
{
display.setRotation(2);
display.setFont(&FreeMonoBold9pt7b);
display.setTextColor(GxEPD_BLACK);
display.firstPage();
do
{
display.fillScreen(GxEPD_WHITE);
display.setCursor(15, 20);
display.println(F("AAAAAAAAAA"));
//delay(50);
display.setCursor(15, 40);
display.println(F("BBBBBBBBBB"));
//delay(50);
display.setCursor(15, 60);
display.println(F("CCCCCCCCCC"));
//delay(50);
display.setCursor(15, 80);
display.println(F("DDDDDDDDDD"));
//delay(50);
display.setCursor(15, 100);
display.println(F("EEEEEEEEEE"));
//delay(50);
}
while (display.nextPage());
}
void helloWorld2()
{
display.setRotation(2);
display.setFont(&FreeMonoBold9pt7b);
display.setTextColor(GxEPD_BLACK);
display.setPartialWindow(0, 20, 128, 25); // x,y,width,height
display.firstPage();
do
{
display.fillScreen(GxEPD_WHITE);
display.hasFastPartialUpdate();
display.setCursor(15, 40);
display.println(F("0000000000"));
delay(50);
}
while (display.nextPage());
}
void helloWorld3()
{
display.setRotation(2);
display.setFont(&FreeMonoBold9pt7b);
display.setTextColor(GxEPD_BLACK);
display.setPartialWindow(0, 90, 128, 25); // x,y,width,height
display.firstPage();
do
{
display.fillScreen(GxEPD_WHITE);
display.hasFastPartialUpdate();
display.setCursor(15, 100);
display.println(F("1111111111"));
delay(50);
}
while (display.nextPage());
}
In the display, i want to change the 2nd line ("BBBBBBBBBB") to "00000000000" and last line ("EEEEEEEEEE") to "1111111111" but the 2nd line change from "BBBBBBBBBB" to "0000000000" one time and shows always "0000000000". Only the last line change and repeat from "EEEEEEEEEE" to "1111111111".
Some suggestion? or code example?
Thanks in advance.
Regards.
and i don't understand why, for example, i can't remove "do" instruction and other lines in "void helloWorld3()" function, etc.