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	- Project: Scanner
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2023-10-29 13:59:10
	- Source Code generated by: AlexWind

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/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <Wire.h>
#include <SoftwareSerial.h>
#include <LiquidCrystal_I2C.h>
#include <MicroNMEA.h>

/****** SYSTEM REQUIREMENT 1 *****/
/* Reads NMEA 8bit data from GPS module. Reads hours */
/* minutes, seconds and Display h, m, s on 6x 7seg */
/* LED display. When mins and secs are 00 00, contact */
/* closure for about 1 sec. */

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void displayTime(uint8_t hours, uint8_t minutes, uint8_t seconds);
void performContactClosure();

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t contactClosure_PIN_D2 = 2;

/***** DEFINITION OF Software Serial *****/
const uint8_t gpsSerial_PIN_SERIAL_TX_A1 = A1;
const uint8_t gpsSerial_PIN_SERIAL_RX_A0 = A0;
SoftwareSerial gpsSerial(gpsSerial_PIN_SERIAL_RX_A0, gpsSerial_PIN_SERIAL_TX_A1);

/***** DEFINITION OF I2C PINS *****/
const uint8_t display_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t display_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t display_LCD1602I2C_I2C_SLAVE_ADDRESS = 39;

void setup(void)
{
  // Initialize contact closure pin
  pinMode(contactClosure_PIN_D2, OUTPUT);

  // Initialize GPS serial communication
  gpsSerial.begin(9600);

  // Initialize LCD display
  LiquidCrystal_I2C lcd(display_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2);
  lcd.begin(16, 2);
  lcd.backlight();
}

void loop(void)
{
  // Read GPS data
  if (gpsSerial.available())
  {
    String nmeaSentence = gpsSerial.readStringUntil('\n');
    if (nmeaSentence.startsWith("$GPRMC"))
    {
      MicroNMEA nmea;
      nmea.process(nmeaSentence[0]); // Convert String to char

      // Check if the fix is valid
      if (nmea.isValid())
      {
        // Get the time components
        uint8_t hours = nmea.getHour();
        uint8_t minutes = nmea.getMinute();
        uint8_t seconds = nmea.getSecond();

        // Display the time on the LCD
        displayTime(hours, minutes, seconds);

        // Check if minutes and seconds are both 00
        if (minutes == 0 && seconds == 0)
        {
          performContactClosure();
        }
      }
    }
  }
}

void displayTime(uint8_t hours, uint8_t minutes, uint8_t seconds)
{
  // Display the time on the LCD
  LiquidCrystal_I2C lcd(display_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  lcd.print(hours);
  lcd.print(":");
  if (minutes < 10)
  {
    lcd.print("0");
  }
  lcd.print(minutes);
  lcd.print(":");
  if (seconds < 10)
  {
    lcd.print("0");
  }
  lcd.print(seconds);
}

void performContactClosure()
{
  // Perform contact closure for about 1 second
  digitalWrite(contactClosure_PIN_D2, HIGH);
  delay(1000);
  digitalWrite(contactClosure_PIN_D2, LOW);
}