/*
* SimpleClock.cpp
*
* Shows a (fast) running clock with big numbers on a 2004 LCD.
* https://wokwi.com/projects/346661429974139474
*
* Copyright (C) 2022 Armin Joachimsmeyer
* [email protected]
*
* This file is part of LCDBigNumbers https://github.com/ArminJo/LCDBigNumbers.
*
* LCDBigNumbers is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/gpl.html>.
*
*/
#include <Arduino.h>
/*
* Choose your display
*/
//#define USE_PARALLEL_2004_LCD // Is default
//#define USE_PARALLEL_1602_LCD
#define USE_SERIAL_2004_LCD
//#define USE_SERIAL_1602_LCD
#include "LCDBigNumbers.hpp" // Include sources for LCD big number generation
#if defined(USE_PARALLEL_LCD)
LiquidCrystal myLCD(2, 3, 4, 5, 6, 7); // Depends on your actual connections
//LiquidCrystal myLCD(4, 5, 6, 7, 8, 9); // Sample connections starting at pin 4
#else
#define LCD_I2C_ADDRESS 0x27 // Default LCD address is 0x27 for a 20 chars and 4 line / 2004 display
LiquidCrystal_I2C myLCD(LCD_I2C_ADDRESS, LCD_COLUMNS, LCD_ROWS); // LCD_COLUMNS and LCD_ROWS are set by LCDBigNumbers.hpp depending on the defined display
#endif
/*
* Available big number fonts are: BIG_NUMBERS_FONT_1_COLUMN_2_ROWS_VARIANT_1, BIG_NUMBERS_FONT_2_COLUMN_2_ROWS_VARIANT_1,
* BIG_NUMBERS_FONT_3_COLUMN_2_ROWS_VARIANT_1, BIG_NUMBERS_FONT_3_COLUMN_2_ROWS_VARIANT_2, BIG_NUMBERS_FONT_3_COLUMN_2_ROWS_VARIANT_3,
* BIG_NUMBERS_FONT_2_COLUMN_3_ROWS_VARIANT_1, BIG_NUMBERS_FONT_2_COLUMN_3_ROWS_VARIANT_2, BIG_NUMBERS_FONT_3_COLUMN_3_ROWS_VARIANT_1,
* BIG_NUMBERS_FONT_3_COLUMN_4_ROWS_VARIANT_1, BIG_NUMBERS_FONT_3_COLUMN_4_ROWS_VARIANT_2
*/
LCDBigNumbers bigNumberLCD(&myLCD, BIG_NUMBERS_FONT_3_COLUMN_3_ROWS_VARIANT_1); // Use 3x3 numbers
void setup() {
Serial.begin(115200);
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__));
#if defined(USE_PARALLEL_LCD)
myLCD.begin(LCD_COLUMNS, LCD_ROWS); // LCD_COLUMNS and LCD_ROWS are set by LCDBigNumbers.hpp depending on the defined display
#else
myLCD.init();
myLCD.clear();
myLCD.backlight();
#endif
bigNumberLCD.begin(); // Creates custom character used for generating big numbers
myLCD.setCursor(0, 0);
myLCD.print(F("Clock demo"));
myLCD.setCursor(0, 1);
myLCD.print(__DATE__);
delay(2000);
myLCD.clear();
}
int Seconds = 0;
int Minutes = 48;
int Hours = 11;
unsigned long lastMillisOfClockUpdate = 0;
void loop() {
if (millis() - lastMillisOfClockUpdate > 1000) { // Fast mode :-), do not wait 60 seconds
lastMillisOfClockUpdate += 1000;
/*
* Print hours
*/
bigNumberLCD.setBigNumberCursor(2);
if (Hours < 10) {
bigNumberLCD.print('0');
}
bigNumberLCD.print(Hours);
/*
* Do blinking colon
*/
if (Seconds % 2 == 1) {
bigNumberLCD.print(':');
} else {
bigNumberLCD.print(ONE_COLUMN_SPACE_CHARACTER);
}
bigNumberLCD.setBigNumberCursor(12);
/*
* Print minutes
*/
if (Minutes < 10) {
bigNumberLCD.print('0');
}
bigNumberLCD.print(Minutes);
/*
* Go to next minute
*/
Seconds++;
if (Seconds >= 2) { // Demo fast mode with blinking colon
// if (Seconds >= 60) {
Seconds = 0;
Minutes++;
if (Minutes >= 60) {
Minutes = 0;
Hours++;
if (Hours >= 24) {
Hours = 0;
}
}
}
}
}