minitBmp.ino

#include <TinyGPS.h>
#include <parsegpsBitmap.h>
#include <minitzBitmap.h>

#include <SD.h>

minitzBitmap mb;
//
TinyGPS gps;

void setup() {

  // to save space the GPS sensor has to be connected to the
  // hardware Serial
  Serial.begin(4800);

}

void loop() {

  bool newData = false;
  while(Serial.available())
  {
    char c = Serial.read();
    if (gps.encode(c)) // Did a new valid sentence come in?
    {
        newData = true;
    }
  }

  if (newData)
  {
    File bitmapFile;
    float flat, flon;
    unsigned long age;
    gps.f_get_position(&flat, &flon, &age);
    // put your main code here, to run repeatedly:
    int tz = mb.get_timezone(1551155, 155115, 1500, 600, &bitmapFile);
//
    int years;
    byte months, days, hours, minutes, seconds, hundredths;
    unsigned long fix_age;
//
    gps.crack_datetime(&years, &months, &days, &hours, &minutes, &seconds, &hundredths, &fix_age);
    
    // minitz has a very particular time/date format it wants
    int timetz = seconds + minutes * 100 + hours * 10000;
    int date = (years-2000) + months * 100 + days * 10000;
//  
    int using_dst = mb.apply_timezone(&timetz, &date, tz);
    // now you have the timezone, but not much space to do much with it :(
  }
}