#include <SoftwareSerial.h>

#include <TinyGPS.h>
#include <Adafruit_GFX_AS8.h>    // Core graphics library
#include <Adafruit_ILI9341_AS8.h> // Hardware-specific library

/* This sample code demonstrates the normal use of a TinyGPS object.
   It requires the use of SoftwareSerial, and assumes that you have a
   4800-baud serial GPS device hooked up on pins 4(rx) and 3(tx).
*/

TinyGPS gps;
//SoftwareSerial ss(4, 3);

// The control pins for the LCD can be assigned to any digital or
// analog pins...but we'll use the analog pins as this allows us to
// double up the pins with the touch screen (see the TFT paint example).
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0

#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
Adafruit_ILI9341_AS8 tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

unsigned long targetTime = 0;
byte red = 31;
byte green = 0;
byte blue = 0;
byte state = 0;
unsigned int colour = red << 11;

void setup()
{
  //Serial.begin(115200);
  Serial.begin(9600);

  Serial.print("Simple TinyGPS library v. "); Serial.println(TinyGPS::library_version());
  Serial.println("by Mikal Hart");
  Serial.println();

   tft.reset();
  delay(10);
  tft.begin(0x9341);
  tft.setRotation(1);
}

void loop()
{
  bool newData = false;
  unsigned long chars;
  unsigned short sentences, failed;

  // For one second we parse GPS data and report some key values
  for (unsigned long start = millis(); millis() - start < 1000;)
  {
    while (Serial.available())
    {
      char c = Serial.read();
      //Serial.write(c); // uncomment this line if you want to see the GPS data flowing
      if (gps.encode(c)) // Did a new valid sentence come in?
        newData = true;
    }
  }

  if (newData)
  {
    float flat, flon;
    unsigned long age;
    gps.f_get_position(&flat, &flon, &age);
    Serial.print("LAT=");
    Serial.print(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flat, 6);
    Serial.print(" LON=");
    Serial.print(flon == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flon, 6);
    Serial.print(" SAT=");
    Serial.print(gps.satellites() == TinyGPS::GPS_INVALID_SATELLITES ? 0 : gps.satellites());
    Serial.print(" PREC=");
    Serial.print(gps.hdop() == TinyGPS::GPS_INVALID_HDOP ? 0 : gps.hdop());

    unsigned long fix_age, time, date, speed, course;
    gps.get_datetime(&date, &time, &fix_age);
    Serial.print(" Date=");
    Serial.print(date);

    int year;
    byte month, day, hour, minutes, seconds, hundredths;
    unsigned long fix_age2;
    String year_str;
    String month_str;
    String day_str;
    String hour_str;
    String minutes_str;
    String seconds_str;
    String hundredths_str;
    char year_char[5];
    char month_char[3];
    char day_char[3];
    char hour_char[3];
    char minutes_char[3];
    char seconds_char[4];
    char hundredths_char[5];
    gps.crack_datetime(&year, &month, &day, &hour, &minutes, &seconds, &hundredths, &fix_age2);

    tft.setTextSize(1);
    tft.fillScreen(ILI9341_BLACK);
    tft.setTextColor(ILI9341_GREEN);


    year_str=String(year);
    month_str=String(month);
    day_str=String(day);
    hour_str=String(hour);
    minutes_str=String(minutes);
    seconds_str=String(seconds);
    hundredths_str=String(hundredths);


    year_str.toCharArray(year_char,5);
    month_str.toCharArray(month_char,3);
    day_str.toCharArray(day_char,3);
    hour_str.toCharArray(hour_char,3);
    minutes_str.toCharArray(minutes_char,3);
    seconds_str.toCharArray(seconds_char,4);
    hundredths_str.toCharArray(hundredths_char,5);

    tft.drawString(year_char,0,0,2);
    tft.drawString(month_char,40,0,2);
    tft.drawString(day_char,60,0,2);
    tft.drawString(hour_char,80,0,2);
    tft.drawString(minutes_char,100,0,2);
    tft.drawString(seconds_char,120,0,2);
    tft.drawString(hundredths_char,140,0,2);

    int xpos=0;
    xpos+=tft.drawString("-------------",0,64,2);
    tft.drawChar(127,xpos,64,2);
  }

  gps.stats(&chars, &sentences, &failed);
  Serial.print(" CHARS=");
  Serial.print(chars);
  Serial.print(" SENTENCES=");
  Serial.print(sentences);
  Serial.print(" CSUM ERR=");
  Serial.println(failed);
  if (chars == 0)
    Serial.println("** No characters received from GPS: check wiring **");
}