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e-Paper/Arduino/epd2in9_V2/epd2in9_V2.ino

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+  /**
+ *  @filename   :   epd2in9_V2-demo.ino
+ *  @brief      :   2.9inch e-paper V2 display demo
+ *  @author     :   Yehui from Waveshare
+ *
+ *  Copyright (C) Waveshare     Nov 09 2020
+ *
+ * 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 "epd2in9_V2.h"
+#include "epdpaint.h"
+#include "imagedata.h"
+
+#define COLORED     0
+#define UNCOLORED   1
+
+/**
+  * 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.
+  */
+unsigned char image[1024];
+Paint paint(image, 0, 0);    // width should be the multiple of 8 
+Epd epd;
+unsigned long time_start_ms;
+unsigned long time_now_s;
+char time_string[] = {'0', '0', ':', '0', '0', '\0'};
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  if (epd.Init() != 0) {
+      Serial.print("e-Paper init failed");
+      return;
+  }
+
+#if 1
+  epd.ClearFrameMemory(0xFF);   // bit set = white, bit reset = black
+  epd.DisplayFrame();
+  
+  paint.SetRotate(ROTATE_0);
+  paint.SetWidth(128);
+  paint.SetHeight(24);
+
+  /* For simplicity, the arguments are explicit numerical coordinates */
+  paint.Clear(COLORED);
+  paint.DrawStringAt(0, 4, "Hello world!", &Font12, UNCOLORED);
+  epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());
+  
+  paint.Clear(UNCOLORED);
+  paint.DrawStringAt(0, 4, "e-Paper Demo", &Font12, COLORED);
+  epd.SetFrameMemory(paint.GetImage(), 0, 30, paint.GetWidth(), 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.SetFrameMemory(paint.GetImage(), 8, 60, paint.GetWidth(), paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawCircle(32, 32, 30, COLORED);
+  epd.SetFrameMemory(paint.GetImage(), 56, 60, paint.GetWidth(), paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);
+  epd.SetFrameMemory(paint.GetImage(), 8, 130, paint.GetWidth(), paint.GetHeight());
+
+  paint.Clear(UNCOLORED);
+  paint.DrawFilledCircle(32, 32, 30, COLORED);
+  epd.SetFrameMemory(paint.GetImage(), 56, 130, paint.GetWidth(), paint.GetHeight());
+  epd.DisplayFrame();
+
+  delay(2000);
+#endif
+
+#if 1
+  if (epd.Init() != 0) {
+      Serial.print("e-Paper init failed ");
+      return;
+  }
+
+  /** 
+   *  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.
+   */
+  epd.SetFrameMemory_Base(IMAGE_DATA);
+  epd.DisplayFrame();
+#endif
+
+#if 0
+  // Quick brush demo
+  if (epd.Init_Fast() != 0) {
+      Serial.print("e-Paper init failed ");
+      return;
+  }
+
+  /** 
+   *  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.
+   */
+  epd.SetFrameMemory_Base(IMAGE_DATA);
+  epd.DisplayFrame();
+#endif
+
+#if 0
+  Serial.print("show 4-gray image\r\n");
+  if (epd.Init_4Gray() != 0) {
+      Serial.print("e-Paper init failed ");
+      return;
+  }
+  epd.Display4Gray(IMAGE_DATA_4Gray);
+#endif
+
+#if 0
+  if (epd.Init() != 0) {
+      Serial.print("e-Paper init failed");
+      return;
+  }
+
+  epd.ClearFrameMemory(0xFF);   // bit set = white, bit reset = black
+  epd.DisplayFrame();
+  
+  time_start_ms = millis();
+  
+  // put your main code here, to run repeatedly:
+
+  for(;;){
+    time_now_s = (millis() - time_start_ms) / 1000;
+    time_string[0] = time_now_s / 60 / 10 + '0';
+    time_string[1] = time_now_s / 60 % 10 + '0';
+    time_string[3] = time_now_s % 60 / 10 + '0';
+    time_string[4] = time_now_s % 60 % 10 + '0';
+
+    paint.SetWidth(32);
+    paint.SetHeight(96);
+    paint.SetRotate(ROTATE_90);
+  
+    paint.Clear(UNCOLORED);
+    paint.DrawStringAt(0, 4, time_string, &Font24, COLORED);
+    epd.SetFrameMemory_Partial(paint.GetImage(), 80, 72, paint.GetWidth(), paint.GetHeight());
+    epd.DisplayFrame_Partial();
+  }
+#endif
+
+  /* Deep sleep */
+  Serial.print("sleep...");
+  epd.Sleep();
+}
+
+void loop() {
+
+
+  // delay(300);
+}