How to refresh?

Other Hardware Displays
1

Hello everybody,
sorry newbie on the forum and cpp programing.
I only have a quick question on a demo downloaded from waveshare website for a ePaper display 2.13 inches black and white. I was able to add a second image with a delay time but I need to implement a refresh so the picture will run continuously until power source is dead. Any wisdom will be appreciated, thank you for any help and best regards.

3

/**

  • @filename : epd2in13-demo.ino
  • @brief : 2.13inch e-paper display demo
  • @author : Yehui from Waveshare
  • Copyright (C) Waveshare September 9 2017
  • Permission is hereby granted, free of charge, to any person obtaining a copy
  • of this software and associated documnetation files (the "Software"), to deal
  • in the Software without restriction, including without limitation the rights
  • to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  • copies of the Software, and to permit persons to whom the Software is
  • furished to do so, subject to the following conditions:
  • The above copyright notice and this permission notice shall be included in
  • all copies or substantial portions of the Software.
  • THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  • IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  • FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  • AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  • LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  • OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  • THE SOFTWARE.
    */

#include <SPI.h>
#include "fepd2in13.h"
#include "imagedata.h"

/**

  • Due to RAM not enough in Arduino UNO, a frame buffer is not allowed.
  • In this case, a smaller image buffer is allocated and you have to
  • update a partial display several times.
  • 1 byte = 8 pixels, therefore you have to set 8*N pixels at a time.
    */
    Epd epd;

void setup()
{
// put your setup code here, to run once:
Serial.begin(9600);
if (epd.Init() != 0) {
Serial.print("e-Paper init failed\n");
return;
}
//Serial.print("ClearFrameMemory\n");
// epd.ClearFrameMemory(); // bit set = white, bit reset = black

/**

  • there are 2 memory areas embedded in the e-paper display
  • and once the display is refreshed, the memory area will be auto-toggled,
  • i.e. the next action of SetFrameMemory will set the other memory area
  • therefore you have to set the frame memory and refresh the display twice.
    */

Serial.print("SetFrameMemory\n");
epd.SetFrameMemory(gImage_IMAGE);
Serial.print("DisplayFrame\n");
epd.DisplayFrame();
delay(5000);
Serial.print("SetFrameMemory\n");
epd.SetFrameMemory(gImage_IMAGE1);
Serial.print("DisplayFrame\n");
epd.DisplayFrame();

}

void loop()
{
}

epdif.cpp (1.97 KB)

epdif.h (1.83 KB)

fepd2in13.cpp (7.83 KB)

fepd2in13.h (2.14 KB)

fepd2in13-demo.ino (2.87 KB)

4

The code as shown, runs in setup , which only executes once as the start . You need code in the “loop” if want it to run continually .

5

Thank you!! I placed the code in between loop brackets and it runs continually.

6

my code keeps saying "exit status one" it keeps on until it eventually verifies my code, without me even changing a thing to my code. but it takes a day or two until it accepts my code :cry: