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e-Paper/Arduino/epd2in7_V2/epd2in7_V2.ino

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+/**
+    @filename   :   epd2in7_V2-demo.ino
+    @brief      :   2.7inch e-paper display demo
+    @author     :   Waveshare
+
+    Copyright (C) Waveshare     September 20 2022
+
+   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 "epd2in7_V2.h"
+#include "imagedata.h"
+#include "epdpaint.h"
+
+#define COLORED     0
+#define UNCOLORED   1
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  Epd epd;
+
+  Serial.print("e-Paper init\r\n");
+  if (epd.Init() != 0) {
+    Serial.print("e-Paper init failed\r\n");
+    return;
+  }
+
+  /* This clears the SRAM of the e-paper display */
+  epd.Clear();
+
+  /**
+      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.
+  */
+#if 1
+  epd.Display_Base_color(0xff);
+  unsigned char image[1024];
+  Paint paint(image, 176, 24);    //width should be the multiple of 8
+
+  paint.Clear(UNCOLORED);
+  paint.DrawStringAt(20, 5, "e-Paper Demo", &Font16, COLORED);
+  epd.Display_Partial_Not_refresh(paint.GetImage(), 0, 32, 0+paint.GetWidth(), 32+paint.GetHeight());
+
+  paint.Clear(COLORED);
+  paint.DrawStringAt(20, 5, "Hello world!", &Font16, UNCOLORED);
+  epd.Display_Partial_Not_refresh(paint.GetImage(), 0, 64, 0+paint.GetWidth(), 64+paint.GetHeight());
+
+  paint.SetWidth(64);
+  paint.SetHeight(64);
+
+  paint.Clear(UNCOLORED);
+  paint.DrawRectangle(0, 0, 40, 50, COLORED);
+  paint.DrawLine(0, 0, 40, 50, COLORED);
+  paint.DrawLine(40, 0, 0, 50, COLORED);
+  epd.Display_Partial_Not_refresh(paint.GetImage(), 10, 130, 10+paint.GetWidth(), 130+paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawCircle(32, 32, 30, COLORED);
+  epd.Display_Partial_Not_refresh(paint.GetImage(), 90, 120, 90+paint.GetWidth(), 120+paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);
+  epd.Display_Partial_Not_refresh(paint.GetImage(), 10, 200, 10+paint.GetWidth(), 200+paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawFilledCircle(32, 32, 30, COLORED);
+  epd.Display_Partial(paint.GetImage(), 90, 190, 90+paint.GetWidth(), 190+paint.GetHeight());
+
+  delay(1000);
+#endif
+  
+#if 1
+  /* This displays an image */
+  epd.Init();
+  Serial.print("show 2-gray image\r\n");
+  epd.Display(IMAGE_DATA);
+  delay(1000);
+#endif
+
+#if 1
+  Serial.print("show 4-gray image\r\n");
+  epd.Init_4Gray();
+  epd.Display4Gray(IMAGE_DATA_4Gray);
+#endif
+
+  /* Deep sleep */
+  Serial.print("sleep...");
+  epd.Sleep();
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}