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e-Paper/Arduino/epd3in7/epd3in7.ino

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+/**
+    @filename   :   epd3in7-demo.ino
+    @brief      :   3.7inch e-paper display demo
+    @author     :   Waveshare
+
+    Copyright (C) Waveshare     July 17 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 "epd3in7.h"
+#include "imagedata.h"
+#include "epdpaint.h"
+
+#define COLORED     0
+#define UNCOLORED   1
+
+UBYTE image[700];
+Paint paint(image, 0, 0);    // width should be the multiple of 8 
+UDOUBLE time_start_ms;
+UDOUBLE time_now_s;
+
+void setup() {
+    // put your setup code here, to run once:
+    Serial.begin(115200);
+    Epd epd;
+    if (epd.Init() != 0) {
+        Serial.print("e-Paper init failed");
+        return;
+    }
+    Serial.print("3.7inch e-paper demo\r\n ");
+    Serial.print("e-Paper Clear\r\n ");
+    epd.Clear(1);  
+    Serial.print("draw image\r\n ");
+    epd.DisplayFrame(IMAGE_DATA, true);   // Set base image
+    delay(3000);
+    
+    paint.SetWidth(40);
+    paint.SetHeight(120);
+    paint.SetRotate(ROTATE_270);
+    paint.Clear(UNCOLORED);
+
+    UBYTE i;
+    time_start_ms = millis();
+    for(i=0; i<5; i++) {
+        time_now_s = (millis() - time_start_ms) / 1000;
+        char time_string[] = {'0', '0', ':', '0', '0', '\0'};
+        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.Clear(UNCOLORED);
+        paint.DrawStringAt(20, 10, time_string, &Font16, COLORED);
+        Serial.print("refresh------\r\n ");
+        // epd.DisplayFrame_Partial(paint.GetImage(), 20, 100, 40, 120); // Width must be a multiple of 8
+        /* Writes new data to RAM */
+        epd.DisplayFrame_Part(paint.GetImage(), 40+i*40, 30, 80+i*40, 140, false);   // Xstart must be a multiple of 8
+        /* Displays and toggles the RAM currently in use */
+        epd.TurnOnDisplay();
+        /* Writes the last data to another RAM */
+        epd.DisplayFrame_Part(paint.GetImage(), 40+i*40, 30, 80+i*40, 140, false);   // Xstart must be a multiple of 8
+        delay(500);
+    }
+    
+    Serial.print("clear and sleep......\r\n ");
+    epd.Init();
+    epd.Clear(1);
+    epd.Sleep();
+}
+
+void loop() {
+    // put your main code here, to run repeatedly:
+
+}