Neogps library and Tft display

Other Hardware Displays
1

Hi, i wrote a code for displaying gps nmea sentences to tft display. But my code not display results. Display all sentences 0.00
Where is my fault.

#include <NMEAGPS.h>
static const uint32_t GPSBaud = 38400;
#include <Streamers.h>
static NMEAGPS gps;
static gps_fix  fix;
#define gpsPort Serial
#define GPS_PORT_NAME "Serial"
#include <MCUFRIEND_kbv.h>
#include <Adafruit_GFX.h>
#if defined(_GFXFONT_H_)
#include <Fonts/FreeSerif9pt7b.h>
#define ADJ_BASELINE 11
#else
#define ADJ_BASELINE 0
#endif

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define BLACK   0x0000
#define BLUE    0x001F
#define RED     0xF800
#define GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF

MCUFRIEND_kbv tft;
static const int32_t          zone_hours   = 3L; // "C" +3Hours Ankara Time
static const int32_t          zone_minutes =  0L;
static const NeoGPS::clock_t  zone_offset  =
 zone_hours   * NeoGPS::SECONDS_PER_HOUR +
 zone_minutes * NeoGPS::SECONDS_PER_MINUTE;

static const NeoGPS::Location_t Foca( 38.3810, -26.4550 );
long bearingToFoca = fix.location.BearingToDegrees( Foca );
long range = fix.location.DistanceMiles( Foca );

void setup() {
 gpsPort.begin( GPSBaud );
 pinMode(13, OUTPUT);
 tft.reset();
 uint16_t identifier = tft.readID();
 tft.begin(identifier);
 tft.setRotation(1);
#if defined(_GFXFONT_H_)
 tft.setFont(&FreeSerif9pt7b);
#endif
 tft.fillScreen(BLUE);
 delay(100);
 tft.fillScreen(RED);
 delay(100);
 tft.fillScreen(GREEN);
 delay(100);
 tft.fillScreen(BLACK);
 tft.setCursor(20, 40);
 tft.setTextColor(MAGENTA);
 tft.setTextSize(2);
 tft.println("GPS BILGILERI");
 delay(3000);
 tft.fillScreen(BLACK);

}

void loop() {
   displayInfo();
 }

void adjustTime( NeoGPS::time_t & dt )
{
 NeoGPS::clock_t seconds = dt; // convert date/time structure to seconds
 seconds += zone_offset;
 dt = seconds; // convert seconds back to a date/time structure

} // adjustTime

void displayInfo() {
   while (gps.available( gpsPort )) {
   gps_fix fix = gps.read();
   digitalWrite( 13, !digitalRead(13) );
     }
 if ((gps.statistics.chars < 10) && (millis() > 5000)) {
   tft.setCursor(0, 35);
   tft.setTextSize(2);
   tft.println(F("GPS Sinyali Bekleniyor"));
   //    while (true);
 }
 tft.fillScreen(BLACK);
 tft.setTextColor(WHITE);
 if (fix.valid.date && fix.valid.time) {
   adjustTime( fix.dateTime );
 }
 tft.setCursor(1, 25);
 tft.setTextSize(2);
 tft.print(F("Saat  : "));
 if (fix.dateTime.hours < 10) {
   tft.print("0");
   tft.print(fix.dateTime.hours);
 } else {
   tft.print(fix.dateTime.hours);
 }
 Serial.print("SAAT : "); Serial.print(fix.dateTime.hours); Serial.print(":"); Serial.print(fix.dateTime.minutes); Serial.print(":"); Serial.println(fix.dateTime.seconds);
 tft.print(F(":"));
 if (fix.dateTime.minutes < 10) {
   tft.print("0");
   tft.print(fix.dateTime.minutes);
 } else {
   tft.print(fix.dateTime.minutes);
 }
 tft.print(F(":"));
 if (fix.dateTime.seconds < 10) {
   tft.print("0");
   tft.println(fix.dateTime.seconds);
 } else {
   tft.println(fix.dateTime.seconds);
 }
 Serial.print("Tarih : "); Serial.print(fix.dateTime.date); Serial.print("/"); Serial.print(fix.dateTime.month); Serial.print("/"); Serial.println(fix.dateTime.year);
 tft.print(F("Tarih : "));
 tft.print(fix.dateTime.date);
 tft.print(F("/"));
 tft.print(fix.dateTime.month);
 tft.print(F("/"));
 tft.println(fix.dateTime.year);
 tft.setTextColor(YELLOW);
 tft.setTextSize(1);
 tft.print("Lat : ");
 if (fix.latitude() < 0) {
   tft.print(fix.latitude());
   tft.println(" S");
 } else {
   tft.print(fix.latitude());
   tft.println(" N");
 }
 tft.setTextColor(YELLOW);
 tft.print("Long: ");
 if (fix.longitude() < 0) {
   tft.print(fix.longitude());
   tft.println(" E");
 } else {
   tft.print(fix.longitude());
   tft.println(" W");
 }
 gpsPort.print("LAT : "); gpsPort.print(fix.latitude() );
 gpsPort.print(" LON : "); gpsPort.println(fix.longitude() );
 tft.print("HIZ : ");
 tft.print(fix.speed());
 tft.println(" Kts");
 gpsPort.print("HIZ: "); gpsPort.println(fix.speed() );
 tft.print("FOCA'ya :");
 tft.print(range);
 tft.println(" Nm");
 gpsPort.print("Mesafe: "); gpsPort.println( range       );
 tft.print("Kerteriz :");
 tft.print(bearingToFoca);
 gpsPort.print("KERTE: "); gpsPort.println(             bearingToFoca            );
 tft.setTextSize(2);
 tft.setCursor(200, 100);
 tft.setTextColor(RED);
 tft.print("ROTA");
 tft.setCursor(220, 130);
 if (fix.heading() < 10) {
   tft.print("00");
   tft.print(fix.heading());
 } else if (fix.heading() < 100) {
   tft.print("0");
   tft.print(fix.heading());
 } else {
   tft.print(fix.heading());
 }
 gpsPort.print("PRUVA: "); gpsPort.println(fix.heading() );





 delay(2);
}
2

First off. Please edit your message to put code in a "Code Window" e.g. with </> icon

It is always wise to run the NeoGPS library examples first.
I am guessing NeoGPS because that appears on the Library Manager.

You should test typical GPS strings on the Serial Terminal first.

When you have got that working, it should be easy to print the same information to the TFT.

David.

3

I used neogps Examples. When serial.print the sentences everything wrote to correctly serial. But not tft.print write

4

I installed NeoGPS and tried examples without success.

I don't have GPS hardware. I assumed that one of the examples might run on a plain Arduino with built-in Serial Terminal. e.g. with some fixed GPS strings embodied in the sketch. And ability to paste test strings into the Serial Terminal.

MCUFRIEND_kbv inherits Adafruit_GFX and Print classes.
So anything that you print on Serial should behave the same on the TFT.

If you can suggest which NeoGPS example to try, I will give it a go.
I can use Zero, Due, STM32, (or Mega2560 if I have to).

Please check that the example works with a virgin NeoGPS installation first. e.g. downgrade version in Manager then upgrade to current version to get a clean install.

David.