fog_acceptor.ino

#include <LCD_I2C.h>
#include <TimeOut.h>

#define BUZZER 2
#define CONTACT_RELAY 3
#define COIN_PIN 9

#define PULSE1 120   // 2 menit / 600 detik
#define PULSE5 120   // 10 menit / 600 detik
#define PULSE10 120  // 10 menit / 600 detik

// interfaces function
void clearLine(int line);
void coinInterrupt();
bool delayNonBlocking(unsigned long interval);
bool countdownHandler(int* time);
void callback0();

// Set var timeout
TimeOut timeout0;

// initial display 16x2
LCD_I2C lcd(0x27, 16, 2);  // Default address of most PCF8574 modules, change according

// coin time variable
unsigned long lastCoinTime = 0;              // Last time a coin was detected
const unsigned long coinDebounceTime = 500;  // Debounce time in milliseconds
volatile int coinCount = 0;                  // Counter for coin pulses

// pulse count
int pulseCount = 0;

// time counter
unsigned long CTR_previousMillis = 0;  // Waktu sebelumnya
const long CTR_interval = 1000;        // Interval 1 detik dalam milidetik
int CTR_countdown = 0;                 // Waktu awal countdown (dalam detik)

// Karakter khusus untuk simbol asap
byte smokeSymbol[8] = {
  0b00100,  // Baris 1: Titik asap atas
  0b01010,  // Baris 2: Pola asap melengkung
  0b10101,  // Baris 3: Pola asap melengkung
  0b00100,  // Baris 4: Pola menurun
  0b01010,  // Baris 5: Pola melengkung
  0b00000,  // Baris 6: Kosong
  0b00100,  // Baris 7: Titik asap bawah
  0b00000   // Baris 8: Kosong
};

void setup() {
  Serial.begin(9600);
  Serial.println(F("Startup"));

  timeout0.timeOut(1000, callback0);  //delay, callback function

  lcd.begin();  // If you are using more I2C devices using the Wire library use lcd.begin(false)
                // this stop the library(LCD_I2C) from calling Wire.begin()
  lcd.backlight();
  // clear line 0-1
  clearLine(0);
  clearLine(1);
  // set text to LCD
  lcd.setCursor(0, 0);
  lcd.print("* Fog Machine *");
  lcd.setCursor(0, 1);
  lcd.print(" version 1.0.0 ");

  pinMode(CONTACT_RELAY, OUTPUT);
  pinMode(BUZZER, OUTPUT);

  // Coin Acceptor
  pinMode(COIN_PIN, INPUT_PULLUP);
  // Aktifkan Pin Change Interrupt untuk PORTB
  PCICR |= (1 << PCIE0);    // Aktifkan PCI untuk PORTB
  PCMSK0 |= (1 << PCINT1);  // Aktifkan interrupt untuk pin 9 (PCINT1)

  // Aktifkan global interrupt
  sei();

  delay(1000);
  // clear line 0-1
  clearLine(0);
  clearLine(1);

  // buat character di index 0
  lcd.createChar(0, smokeSymbol);

  // set text to LCD
  lcd.setCursor(0, 0);
  lcd.write(byte(0));  // Menampilkan simbol koin
  lcd.setCursor(1, 0);
  lcd.print(" Insert Coin ");
  lcd.setCursor(14, 0);
  lcd.write(byte());  // Menampilkan simbol koin
}

void loop() {
  // Panggil fungsi countdown
  if (countdownHandler(&CTR_countdown)) {
    Serial.print("Waktu tersisa: ");
    Serial.println(CTR_countdown);
    if (CTR_countdown > 0) {
      clearLine(1);
      lcd.setCursor(0, 1);

      if (CTR_countdown < 11) {
        if (CTR_countdown % 2 == 0) {
          //digitalWrite(BUZZER, HIGH);
        } else {
          //digitalWrite(BUZZER, LOW);
        }
      }
      lcd.print(CTR_countdown);
      lcd.print(" Seconds");


      // if (CTR_countdown > 60) {
      //   float count_minutes = (float)CTR_countdown/(float)60;
      //   Serial.println(count_minutes);
      //   lcd.print(round(count_minutes));
      //   lcd.print(" Minutes");
      // } else {
      //   if(CTR_countdown < 11){
      //     if (CTR_countdown % 2 == 0) {
      //       //digitalWrite(BUZZER, HIGH);
      //     } else {
      //       //digitalWrite(BUZZER, LOW);
      //     }
      //   }
      //   lcd.print(CTR_countdown);
      //   lcd.print(" Seconds");
      // }

      digitalWrite(CONTACT_RELAY, HIGH);
    } else {
      digitalWrite(BUZZER, LOW);  // stop buzzer
      // clear LCD
      clearLine(0);
      clearLine(1);
      // set text to LCD
      lcd.setCursor(0, 0);
      lcd.write(byte(0));  // Menampilkan simbol koin
      lcd.setCursor(1, 0);
      lcd.print(" Insert Coin ");
      lcd.setCursor(14, 0);
      lcd.write(byte());  // Menampilkan simbol koin

      digitalWrite(CONTACT_RELAY, LOW);
    }
  }

  TimeOut::handler();
}

void callback0() {
  Serial.print(F("Pulse count :"));
  Serial.println(pulseCount);

  // Pilih jenis koin dan terapkan nominalnya
  if (pulseCount == 1) {
    clearLine(0);
    clearLine(1);
    lcd.setCursor(0, 0);
    lcd.print("Remaining Time :");
    CTR_countdown += PULSE1;
  } else if (pulseCount == 5) {
    clearLine(0);
    clearLine(1);
    lcd.setCursor(0, 0);
    lcd.print("Remaining Time :");
    CTR_countdown += PULSE5;
  } else if (pulseCount == 10) {
    clearLine(0);
    clearLine(1);
    lcd.setCursor(0, 0);
    lcd.print("Remaining Time :");
    CTR_countdown += PULSE10;
  } else {
    // CTR_countdown = 0;
  }
  pulseCount = 0;  // reset to 0
}

// ISR untuk PORTB Pin Change Interrupt
ISR(PCINT0_vect) {
  // Periksa apakah pin 9 yang berubah
  if (PINB & (1 << PB1)) {
    timeout0.cancel();
    pulseCount++;
    timeout0.timeOut(1000, callback0);
  }
}

// Function to clear a specific line on the LCD
void clearLine(int line) {
  lcd.setCursor(0, line);         // Move to the start of the specified line
  lcd.print("                ");  // Print 16 spaces (clears the line)
  lcd.setCursor(0, line);         // Move the cursor back to the start of the line
}

bool delayNonBlocking(unsigned long interval) {
  static unsigned long lastTime = 0;  // Variabel static untuk menyimpan waktu terakhir
  unsigned long currentTime = millis();

  if (currentTime - lastTime >= interval) {
    lastTime = currentTime;  // Reset waktu terakhir
    return true;             // Interval tercapai
  }
  return false;  // Interval belum tercapai
}

// Fungsi untuk menangani countdown
bool countdownHandler(int* time) {
  unsigned long CTR_currentMillis = millis();

  if (CTR_currentMillis - CTR_previousMillis >= CTR_interval) {
    CTR_previousMillis = CTR_currentMillis;

    if (*time > 0) {
      (*time)--;    // Kurangi waktu countdown
      return true;  // Indikasikan bahwa waktu telah berubah
    }
  }
  return false;  // Tidak ada perubahan waktu
}