// NanoAlarm v1.00.00 (13.12.2024)

// 2 Laserlichtschranken, gepulst
// 5 Tür oder Fensterschalter (Spannungsteiler für höhere Sicherheit)
// 1 Bewegungsmelder
// Alle Melder an- und abschaltbar per Menü
// Alarm per Bluetooth (HC-05) an ein Handy und dann per WiFi
// Alarm wird abgeschaltet, sobald Handy in der Nähe ost (Bluetooth)
// Alarm auch per Buzzer, nachdem Email versendet wurde
// Testmodus für alle Komponenten (Schalter, Display, Buzzer, HC-05, Laser, Empfänger, 

#define pinLaserLed1              3
#define pinLaserLed2              4
#define pinMotionSensor           5
#define pinBuzzer                 6
#define pinAlarmOff               7

#define pinLDR1                   A0
#define pinLDR2                   A1
#define pinSwitsh1                A2
#define pinSwitsh2                A3
#define pinSwitsh3                A4
#define pinSwitsh4                A6
#define pinSwitsh5                A7

#define displayWidth              20

#include                          <Wire.h> 
#include                          <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);

void setup()
{
  lcd.init();
  lcd.backlight();
  emptyBorder();
  lcd.setCursor(0,1);
  lcd.print(F("*    NANO  ALARM   *"));
  lcd.setCursor(0,2);
  lcd.print(F("* v1.00.1 18.12.24 *"));
  delay(3000);

  pinMode(pinLaserLed1, OUTPUT);
  pinMode(pinLaserLed2, OUTPUT);
  pinMode(pinAlarmOff,  INPUT_PULLUP);

  emptyBorder();
  lcd.setCursor(0, 1);
  lcdCenter(1, F("Selbsttest..."));
  checkLaser1();
  checkLaser2();
}

void loop()
{

}

void emptyBorder()
{
    lcd.setCursor(0, 0);
    lcd.print(F("********************"));
    lcd.setCursor(0, 1);
    lcd.print(F("*                  *"));
    lcd.setCursor(0, 2);
    lcd.print(F("*                  *"));
    lcd.setCursor(0, 3);
    lcd.print(F("********************"));
}

void lcdCenter(byte row, String text)
{
    byte pos = (displayWidth - text.length()) / 2;
    lcd.setCursor(0,row);
    lcd.print(F("                "));
    lcd.setCursor(pos ,row);
    lcd.print(text);
    for (byte i = pos; i < displayWidth; i++)
        lcd.print(F(" "));
}

void checkLaser1()
{
    lcd.setCursor(0, 0);
    lcd.print(F("********************"));
    lcd.setCursor(0, 1);
    lcd.print(F("*  Selbsttest...   *"));
    lcd.setCursor(0, 2);
    float valOff = 0;
    float valOn  = 0;
    lcd.print(F("* Laser #1:        *"));
    lcd.setCursor(0, 3);
    lcd.print(F("********************"));
    lcd.setCursor(12, 2);
    for (byte i = 0; i < 5; i++)
    {
        //lcd.print(F("."));
        digitalWrite(pinLaserLed1, HIGH);
        delay(100);
        valOn += analogRead(pinLDR1);
        lcd.setCursor(12, 2);
        lcd.print(valOn);
        digitalWrite(pinLaserLed1, LOW);
        delay(900);
        valOff += analogRead(pinLDR1);
    }
    lcd.setCursor(12, 1);
    if(valOff > 700 && valOn < 500)
        lcd.print(F("Ok"));
    else
    {
        while (digitalRead(pinAlarmOff) == HIGH)
        { 
            lcd.setCursor(12, 2);
            lcd.print(F("Fehler"));
            delay(250);
            lcd.setCursor(12, 2);
            lcd.print(F("       "));
            delay(250);
        }
        emptyBorder();
    }
}

void checkLaser2()
{
    lcd.setCursor(0, 0);
    lcd.print(F("********************"));
    lcd.setCursor(0, 1);
    lcd.print(F("*  Selbsttest...   *"));
    lcd.setCursor(0, 2);
    float valOff = 0;
    float valOn  = 0;
    lcd.print(F("* Laser #2:        *"));
    lcd.setCursor(0, 3);
    lcd.print(F("********************"));
    lcd.setCursor(12, 2);
    for (byte i = 0; i < 5; i++)
    {
        lcd.print(F("."));
        digitalWrite(pinLaserLed2, HIGH);
        delay(100);
        valOn += analogRead(pinLDR1);
        digitalWrite(pinLaserLed2, LOW);
        delay(900);
        valOff += analogRead(pinLDR2);
    }
    lcd.setCursor(12, 1);
    if(valOff > 700 && valOn < 500)
        lcd.print(F("Ok"));
    else
    {
        while (digitalRead(pinAlarmOff) == HIGH)
        { 
            lcd.setCursor(12, 2);
            lcd.print(F("Fehler"));
            delay(250);
            lcd.setCursor(12, 2);
            lcd.print(F("       "));
            delay(250);
        }
        emptyBorder();
    }
}