MH-ET LIVE 1.54-inches E-Paper demo

eink_demo.ino

#include <GxEPD.h>
#include <GxGDEP015OC1/GxGDEP015OC1.cpp>
#include <Fonts/OpenSansBold12pt7b.h>
#include <Fonts/OpenSansBold14pt7b.h>
#include <Fonts/OpenSansBold30pt7b.h>

#include <GxIO/GxIO_SPI/GxIO_SPI.cpp>
#include <GxIO/GxIO.cpp>

#include GxEPD_BitmapExamples

#include "qrcode.h"

GxIO_Class io(SPI, /*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2); // arbitrary selection of D3(=0), D4(=2), selected for default of GxEPD_Class
GxEPD_Class display(io /*RST=D4*/ /*BUSY=D2*/); // default selection of D4(=2), D2(=4)

void setup() {
  Serial.begin(115200);
  Serial.println();
  Serial.println("Display setup...");
  display.init(115200); // enable diagnostic output on Serial
  display.setRotation(0);
  display.update();
  Serial.println("Done");
  pinMode(D0, WAKEUP_PULLUP);
}

void loop() {
  weatherDemo();
  drawPicture();
  qrCard();
  
  // Use this line if you need to save energy (e.g. battery application)
  int seconds = 10;
  ESP.deepSleep(seconds * 1000000);
}

void weatherDemo(){
    float temp = 16.4;
  int hum = 54;
  float pres = 1010.5;

  uint16_t line_y = 0;
  uint16_t line_x = 0;

  
  display.setTextColor(GxEPD_BLACK);
  line_y = 50;
  display.drawLine(0, line_y, 200, line_y, GxEPD_BLACK);

  line_y = 135;
  display.drawLine(0, line_y, 200, line_y, GxEPD_BLACK);

  line_x = 100;
  display.drawLine(line_x, 135, line_x, 200, GxEPD_BLACK);


  display.setFont(&OpenSansBold12pt7b);
  display.setCursor(10, 35);
  display.print("clear sky");
  
  display.setFont(&OpenSansBold14pt7b);
  display.setCursor(155, 90);
  display.print("C");
  display.setCursor(173, 83);
  display.print("o");
  display.setFont(&OpenSansBold30pt7b);
  display.setCursor(15, 115);
  display.print(temp,1);
    
  display.setFont(&OpenSansBold12pt7b);
  display.setCursor(10, 160);
  display.print("%");
  display.setFont(&OpenSansBold14pt7b);
  display.setCursor(10, 190);
  display.print(hum);

  display.setFont(&OpenSansBold12pt7b);
  display.setCursor(110, 160);
  display.print("hPa"); 
  display.setFont(&OpenSansBold14pt7b);
  display.setCursor(110, 190);
  display.print(pres,1);
  display.update();
  delay(2000);
}

void drawPicture(){
  display.fillRect(0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, GxEPD_WHITE);
  display.update();
  display.drawExampleBitmap(BitmapExample1, 0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, GxEPD_BLACK);
  display.update();
  delay(2000);
}

void qrCard(){
  display.fillRect(0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, GxEPD_WHITE);
  display.update();
  
  // Start time
  uint32_t dt = millis();

  byte box_x = 1;
  byte box_y = 1;
  byte box_s = 6;
  byte init_x = box_x;
  
  display.updateWindow(0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, false);
  
  // Create the QR code
  QRCode qrcode;
  uint8_t qrcodeData[qrcode_getBufferSize(4)];
  qrcode_initText(&qrcode, qrcodeData, 4, 0, "https://www.youtube.com/channel/UCrynPq5AwTTXQr-Hv9_fzMA?sub_confirmation=1");
  
  // Delta time
  dt = millis() - dt;
  Serial.print("QR Code Generation Time: ");
  Serial.print(dt);
  Serial.print("\n");

  // Top quiet zone
  Serial.print("\n\n\n\n");
  
  for (uint8_t y = 0; y < qrcode.size; y++) {
    // Left quiet zone
    Serial.print("        ");

    // Each horizontal module
    for (uint8_t x = 0; x < qrcode.size; x++) {

      // Print each module (UTF-8 \u2588 is a solid block)
      //Serial.print(qrcode_getModule(&qrcode, x, y) ? "\u2588\u2588": "  ");
      if(qrcode_getModule(&qrcode, x, y)){
        Serial.print("\u2588\u2588");
        //Serial.println(py+ps);
        display.fillRect(box_x, box_y, box_s, box_s, GxEPD_BLACK);
      } else {
        Serial.print("  ");
        //Serial.println(py+ps);
        display.fillRect(box_x, box_y, box_s, box_s, GxEPD_WHITE);
      }
      box_x = box_x + box_s;
    }
    Serial.print("\n");
    display.updateWindow(0, box_y, 200, box_s, true);
    box_y = box_y + box_s;
    box_x = init_x;
    
  }
  //display.update();
  // Bottom quiet zone
  Serial.print("\n\n\n\n");  
}