#include   #include   #include   LiquidCrystal lcd(12, 11, 8, 7, 6, 5); TinyGPS gps; SoftwareSerial nss(3, 4);   static bool feedgps(); static void print_date(TinyGPS &gps);   void setup() {   nss.begin(9600);     lcd.begin(16, 2);   lcd.setCursor(0, 0);   lcd.print("  [ GPS Clock ]"); }   void loop() {   bool newdata = false;   unsigned long start = millis();     // Every second we print an update   while (millis() - start < 1000)   {     if (feedgps())       newdata = true;   }     print_date(gps); }   static void print_date(TinyGPS &gps) {   int year;   byte month, day, hour, minute, second, hundredths;   unsigned long age;   gps.crack_datetime(&year, &month, &day, &hour, &minute, &second, &hundredths, &age);     hour += 9; // GMT +9 : Korea time     if(hour > 24) hour -= 24;   if(hour == 24) hour = 0;     if (age == TinyGPS::GPS_INVALID_AGE){     lcd.setCursor(0, 1);     lcd.print("-----------------");   }   else   {     char sz[32];     if(hour >= 12)         sprintf(sz, "   PM %02d:%02d:%02d   ",  hour-12, minute, second);     else         sprintf(sz, "   AM %02d:%02d:%02d   ",  hour, minute, second);           lcd.setCursor(0, 1);     lcd.print(sz);   }    // feedgps(); }   static bool feedgps() {   while (nss.available())   {     if (gps.encode(nss.read()))       return true;   }   return false; }