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» DuinoLab Starter Kit #20: Digital Clock - RTC DS3132 w - I2C Communication

DuinoLab Starter Kit #20: Digital Clock - RTC DS3132 w - I2C Communication


Program :

#include <LiquidCrystal.h>
#include <DS3231.h>
const int PIN_RS = 2;
const int PIN_E = 3;
const int PIN_D4 = 4;
const int PIN_D5 = 5;
const int PIN_D6 = 6;
const int PIN_D7 = 7;
const String REQ_ADJUST_TIME = "ADJTIME";
const String TIME_ADJUST_STRING[] = { "tanggal", "bulan", "tahun","jam", "menit",
"detik" };
const int TIME_BOTTOM_THRESHOLD[] = { 1, 1, 2000, 0, 0, 0 };
const int TIME_UPPER_THRESHOLD[] = { 31, 12, 2099, 23, 59, 59 };
byte temperature_symbol[8] = {
    0b00100,
    0b01010,
    0b01010,
    0b01110,
    0b01110,
    0b11111,
    0b11111,
    0b01110
};
byte degree_symbol[8] = {
    0b01110,
    0b01010,
    0b01110,
    0b00000,
    0b00000,
    0b00000,
    0b00000,
    0b00000
};
const int TEMPERATURE_SYMBOL = 0;
const int DEGREE_SYMBOL = 1;
LiquidCrystal lcd( PIN_RS, PIN_E, PIN_D4, PIN_D5, PIN_D6, PIN_D7 );
DS3231 rtc( SDA, SCL );
void setup()
{
   lcd.begin(16,2);
   rtc.begin();
   lcd.createChar( TEMPERATURE_SYMBOL, temperature_symbol );
   lcd.createChar( DEGREE_SYMBOL, degree_symbol );
   Serial.begin(9600);
}
void loop()
{
   if( Serial.available() ) {
      String recv = Serial.readString();
      if( recv == REQ_ADJUST_TIME ) {
         adjust_time();
      }
   }
   update_lcd();
}
void adjust_time()
{
   int waktu[6];
  
   for( int i = 0; i < 6; i++ ) {
      while(true)
      {
         String dialog = "Input " + TIME_ADJUST_STRING[i] + " (" +
                         String(TIME_BOTTOM_THRESHOLD[i]) + "~" +
                         String(TIME_UPPER_THRESHOLD[i]) + ") : ";
                        
         Serial.print( dialog );
         while( !Serial.available() ) {
            update_lcd();
         }
      
         int recv = Serial.parseInt();
         Serial.println( recv );
         if( recv < TIME_BOTTOM_THRESHOLD[i] || recv > TIME_UPPER_THRESHOLD[i] ) {
            Serial.println("[ERROR]: Cek kembali input waktu");
         } else {
            waktu[i] = recv;
            break;
         }
      }
   }
   rtc.setDate( waktu[0], waktu[1], waktu[2] );
   rtc.setTime( waktu[3], waktu[4], waktu[5] );
   Serial.println("> Update waktu berhasil!");
}
void update_lcd()
{
   lcd.setCursor( 0, 0 );
   String t = "[" + String(rtc.getTimeStr(FORMAT_LONG)) + "] ";
   lcd.print( t );
   lcd.write( (byte) TEMPERATURE_SYMBOL );
   lcd.print( (int) rtc.getTemp() );
   lcd.write( (byte) DEGREE_SYMBOL );
   lcd.print("C");
   lcd.setCursor( 0, 1 );
   lcd.print("Date: ");
   lcd.print( String(rtc.getDateStr(FORMAT_LONG,FORMAT_LITTLEENDIAN,'-')) );
}


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