#include <Arduino.h>
#include <U8g2lib.h> // u8g2 library is used to draw content on the OLED display
#include <Wire.h> // library required for IIC communication
#include "RTClib.h" // real time clock module library
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); // initialization for the used OLED display
RTC_DS1307 rtc; // initialization for the real time clock module
// 'digit_0', 32x49px
const unsigned char epd_bitmap_digit_0 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x20, 0x00, 0x00, 0xfc, 0xe0, 0x00, 0x00, 0xfc,
0xe0, 0x07, 0x00, 0xfc, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x03, 0x00, 0x7e,
0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e,
0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x11, 0x00, 0x3f, 0xf8, 0x01, 0x00, 0x3f,
0xf8, 0x01, 0x00, 0x38, 0xf8, 0x91, 0x04, 0x00, 0xc0, 0x01, 0x00, 0x01, 0x00, 0x00, 0x80, 0x0f,
0x1c, 0x90, 0x84, 0x3f, 0x7c, 0x00, 0x80, 0x3f, 0xfc, 0x00, 0x80, 0x1f, 0xfc, 0x00, 0x80, 0x1f,
0xfc, 0x00, 0x80, 0x1f, 0xfc, 0x00, 0x80, 0x1f, 0xfe, 0x00, 0xc0, 0x1f, 0xfe, 0x00, 0xc0, 0x1f,
0x7c, 0x00, 0xc0, 0x1f, 0x70, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// 'digit_1', 32x49px
const unsigned char epd_bitmap_digit_1 [] PROGMEM = {
0x00, 0x24, 0x49, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x80, 0x24, 0x49, 0xe2,
0x00, 0x00, 0x00, 0xf0, 0x00, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x00, 0x00, 0xfc, 0x90, 0x04, 0x00, 0xfe, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x7e,
0x90, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x90, 0x00, 0x00, 0x7e,
0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x90, 0x20, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x3f,
0x00, 0x00, 0x00, 0x38, 0x90, 0x20, 0x09, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x80, 0x0f,
0x10, 0x20, 0x89, 0x3f, 0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x80, 0x1f, 0x90, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x92, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x10, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f,
0x12, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x12, 0x00, 0xe0, 0x0f,
0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07, 0x12, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07,
0x00, 0x00, 0xe0, 0x03, 0x92, 0x24, 0xf1, 0x03, 0x00, 0x00, 0xf0, 0x01, 0x00, 0x00, 0xf0, 0x00,
0x90, 0x24, 0x31, 0x00
};
// 'digit_2', 32x49px
const unsigned char epd_bitmap_digit_2 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x20, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x00, 0x00, 0xfc, 0x20, 0x01, 0x00, 0xfe, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x7e,
0x20, 0x01, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x20, 0x01, 0x00, 0x7e,
0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x20, 0x31, 0x00, 0x3f, 0x00, 0xf0, 0x01, 0x3f,
0x00, 0xf0, 0x07, 0x38, 0x20, 0xf9, 0x1f, 0x00, 0x00, 0xf8, 0x1f, 0x00, 0x00, 0xf8, 0x1f, 0x00,
0x1c, 0xf0, 0x9f, 0x24, 0x7c, 0x80, 0x1f, 0x00, 0xfc, 0x00, 0x1e, 0x00, 0xfc, 0x00, 0x80, 0x04,
0xfc, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x80, 0x04, 0xfe, 0x00, 0x00, 0x00,
0x7c, 0x00, 0x00, 0x00, 0x70, 0x00, 0x80, 0x04, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x1e, 0x00, 0x80, 0x04, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x00, 0x80, 0x04,
0x3f, 0x00, 0x00, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x3f, 0x00, 0x80, 0x04, 0xff, 0xff, 0x03, 0x00,
0xff, 0xff, 0x03, 0x00, 0xff, 0xff, 0x93, 0x00, 0xfe, 0xff, 0x03, 0x00, 0xfc, 0xff, 0x03, 0x00,
0xf8, 0xff, 0x11, 0x00
};
// 'digit_3', 32x49px
const unsigned char epd_bitmap_digit_3 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x00, 0x00, 0xfc, 0x40, 0x02, 0x00, 0xfe, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x7e,
0x40, 0x02, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x40, 0x02, 0x00, 0x7e,
0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x48, 0x30, 0x00, 0x3f, 0x00, 0xf0, 0x01, 0x3f,
0x00, 0xf0, 0x07, 0x38, 0x48, 0xf8, 0x1f, 0x00, 0x00, 0xf8, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x08, 0xf0, 0x9f, 0x3f, 0x00, 0x80, 0x9f, 0x3f, 0x00, 0x00, 0x9e, 0x1f, 0x48, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x48, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x40, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// 'digit_5', 32x49px
const unsigned char epd_bitmap_digit_5 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x07, 0xc0, 0xff, 0xff, 0x23,
0x00, 0xff, 0xff, 0x01, 0x00, 0xfc, 0xff, 0x00, 0x20, 0x00, 0x00, 0x24, 0xe0, 0x00, 0x00, 0x00,
0xe0, 0x07, 0x00, 0x00, 0xf0, 0x07, 0x00, 0x24, 0xf0, 0x07, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x00,
0xf0, 0x03, 0x00, 0x24, 0xf0, 0x03, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x24,
0xf8, 0x03, 0x00, 0x00, 0xf8, 0x03, 0x00, 0x00, 0xf8, 0x31, 0x00, 0x24, 0xf8, 0xf1, 0x01, 0x00,
0xf8, 0xf1, 0x07, 0x00, 0xf8, 0xf9, 0x1f, 0x00, 0xc0, 0xf9, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x04, 0xf0, 0x9f, 0x3f, 0x00, 0x80, 0x9f, 0x3f, 0x00, 0x00, 0x9e, 0x1f, 0x24, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x24, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x20, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// 'digit_4', 32x49px
const unsigned char epd_bitmap_digit_4 [] PROGMEM = {
0x00, 0x24, 0x49, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x80, 0x24, 0x49, 0xe2,
0x00, 0x00, 0x00, 0xf0, 0x00, 0x00, 0x00, 0xf8, 0x20, 0x00, 0x00, 0xfc, 0xe0, 0x00, 0x00, 0xfc,
0xe0, 0x07, 0x00, 0xfc, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x03, 0x00, 0x7e,
0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e,
0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x31, 0x00, 0x3f, 0xf8, 0xf1, 0x01, 0x3f,
0xf8, 0xf1, 0x07, 0x38, 0xf8, 0xf9, 0x1f, 0x00, 0xc0, 0xf9, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x10, 0xf0, 0x9f, 0x3f, 0x00, 0x80, 0x9f, 0x3f, 0x00, 0x00, 0x9e, 0x1f, 0x90, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x92, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x10, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f,
0x12, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x12, 0x00, 0xe0, 0x0f,
0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07, 0x12, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07,
0x00, 0x00, 0xe0, 0x03, 0x92, 0x24, 0xf1, 0x03, 0x00, 0x00, 0xf0, 0x01, 0x00, 0x00, 0xf0, 0x00,
0x90, 0x24, 0x31, 0x00
};
// 'digit_7', 32x49px
const unsigned char epd_bitmap_digit_7 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x00, 0x00, 0xfc, 0x90, 0x04, 0x00, 0xfe, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x7e,
0x90, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x7e, 0x90, 0x00, 0x00, 0x7e,
0x00, 0x00, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x7f, 0x90, 0x20, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x3f,
0x00, 0x00, 0x00, 0x38, 0x90, 0x20, 0x09, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x80, 0x0f,
0x10, 0x20, 0x89, 0x3f, 0x00, 0x00, 0x80, 0x3f, 0x00, 0x00, 0x80, 0x1f, 0x90, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x92, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x10, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f,
0x12, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x00, 0x00, 0xe0, 0x0f, 0x12, 0x00, 0xe0, 0x0f,
0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07, 0x12, 0x00, 0xe0, 0x07, 0x00, 0x00, 0xe0, 0x07,
0x00, 0x00, 0xe0, 0x03, 0x92, 0x24, 0xf1, 0x03, 0x00, 0x00, 0xf0, 0x01, 0x00, 0x00, 0xf0, 0x00,
0x90, 0x24, 0x31, 0x00
};
// 'digit_6', 32x49px
const unsigned char epd_bitmap_digit_6 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x07, 0xc0, 0xff, 0xff, 0x43,
0x00, 0xff, 0xff, 0x01, 0x00, 0xfc, 0xff, 0x00, 0x20, 0x00, 0x00, 0x48, 0xe0, 0x00, 0x00, 0x00,
0xe0, 0x07, 0x00, 0x00, 0xf0, 0x07, 0x00, 0x48, 0xf0, 0x07, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x00,
0xf0, 0x03, 0x00, 0x48, 0xf0, 0x03, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x48,
0xf8, 0x03, 0x00, 0x00, 0xf8, 0x03, 0x00, 0x00, 0xf8, 0x31, 0x00, 0x09, 0xf8, 0xf1, 0x01, 0x00,
0xf8, 0xf1, 0x07, 0x00, 0xf8, 0xf9, 0x1f, 0x00, 0xc0, 0xf9, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x1c, 0xf0, 0x9f, 0x3f, 0x7c, 0x80, 0x9f, 0x3f, 0xfc, 0x00, 0x9e, 0x1f, 0xfc, 0x00, 0x80, 0x1f,
0xfc, 0x00, 0x80, 0x1f, 0xfc, 0x00, 0x80, 0x1f, 0xfe, 0x00, 0xc0, 0x1f, 0xfe, 0x00, 0xc0, 0x1f,
0x7c, 0x00, 0xc0, 0x1f, 0x70, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// 'digit_8', 32x49px
const unsigned char epd_bitmap_digit_8 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x20, 0x00, 0x00, 0xfc, 0xe0, 0x00, 0x00, 0xfc,
0xe0, 0x07, 0x00, 0xfc, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x03, 0x00, 0x7e,
0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e,
0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x31, 0x00, 0x3f, 0xf8, 0xf1, 0x01, 0x3f,
0xf8, 0xf1, 0x07, 0x38, 0xf8, 0xf9, 0x1f, 0x00, 0xc0, 0xf9, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x1c, 0xf0, 0x9f, 0x3f, 0x7c, 0x80, 0x9f, 0x3f, 0xfc, 0x00, 0x9e, 0x1f, 0xfc, 0x00, 0x80, 0x1f,
0xfc, 0x00, 0x80, 0x1f, 0xfc, 0x00, 0x80, 0x1f, 0xfe, 0x00, 0xc0, 0x1f, 0xfe, 0x00, 0xc0, 0x1f,
0x7c, 0x00, 0xc0, 0x1f, 0x70, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// 'digit_9', 32x49px
const unsigned char epd_bitmap_digit_9 [] PROGMEM = {
0x00, 0xfc, 0xff, 0x1f, 0x00, 0xff, 0xff, 0x0f, 0x80, 0xff, 0xff, 0x47, 0xc0, 0xff, 0xff, 0xe3,
0x00, 0xff, 0xff, 0xf1, 0x00, 0xfc, 0xff, 0xf8, 0x20, 0x00, 0x00, 0xfc, 0xe0, 0x00, 0x00, 0xfc,
0xe0, 0x07, 0x00, 0xfc, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x07, 0x00, 0xfe, 0xf0, 0x03, 0x00, 0x7e,
0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e, 0xf0, 0x03, 0x00, 0x7e,
0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x03, 0x00, 0x7f, 0xf8, 0x31, 0x00, 0x3f, 0xf8, 0xf1, 0x01, 0x3f,
0xf8, 0xf1, 0x07, 0x38, 0xf8, 0xf9, 0x1f, 0x00, 0xc0, 0xf9, 0x1f, 0x01, 0x00, 0xf8, 0x9f, 0x0f,
0x08, 0xf0, 0x9f, 0x3f, 0x00, 0x80, 0x9f, 0x3f, 0x00, 0x00, 0x9e, 0x1f, 0x48, 0x00, 0x80, 0x1f,
0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x80, 0x1f, 0x48, 0x00, 0xc0, 0x1f, 0x00, 0x00, 0xc0, 0x1f,
0x00, 0x00, 0xc0, 0x1f, 0x40, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0xc0, 0x0f, 0x02, 0x00, 0xc0, 0x0f,
0x1e, 0x00, 0xc0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f, 0x7f, 0x00, 0xe0, 0x0f,
0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0x3f, 0x00, 0xe0, 0x07, 0xff, 0xff, 0xe3, 0x07,
0xff, 0xff, 0xe3, 0x03, 0xff, 0xff, 0xf3, 0x03, 0xfe, 0xff, 0xf3, 0x01, 0xfc, 0xff, 0xf3, 0x00,
0xf8, 0xff, 0x31, 0x00
};
// Array of all digits
const unsigned char* bitmaps_digits[10] = {
epd_bitmap_digit_0,
epd_bitmap_digit_1,
epd_bitmap_digit_2,
epd_bitmap_digit_3,
epd_bitmap_digit_4,
epd_bitmap_digit_5,
epd_bitmap_digit_6,
epd_bitmap_digit_7,
epd_bitmap_digit_8,
epd_bitmap_digit_9
};
int hours = 0;
int minutes = 0;
int seconds = 0;
void setup(void) {
u8g2.begin(); // start the u8g2 library
rtc.begin(); // initialize the RTC module
rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // set the time and date to the time and date of uploading the sketch
}
void loop(void) {
DateTime now = rtc.now(); // get current time from the RTC module
hours = now.hour () ;
hours = hours +1;
if (hours == 24){hours = 00;}
minutes = now.minute();
seconds = now.second();
u8g2.clearBuffer(); // clear the internal memory for drawing content
u8g2.setBitmapMode(1); // draw transparent images
// draw digits for hours
u8g2.drawXBMP(0, 7, 32, 49, bitmaps_digits[hours / 10]); // first digit for hours
u8g2.drawXBMP(30, 7, 32, 49, bitmaps_digits[hours % 10]); // second digit for hours
// only show the colon in between every two seconds
if (seconds % 2 == 0) { // the result will be 0 or 1 depending if the value is even or odd
u8g2.drawBox(63, 21, 4, 4); // draw filled rectangle
u8g2.drawBox(61, 37, 4, 4); // draw filled rectangle
}
// draw digits for minutes
u8g2.drawXBMP(66, 7, 32, 49, bitmaps_digits[minutes / 10]); // first digit for minutes
u8g2.drawXBMP(96, 7, 32, 49, bitmaps_digits[minutes % 10]); // second digit for minutes
u8g2.sendBuffer(); // transfer internal memory to the display
}