Urgent help required for project using GPS using Neo 7m

[akrishnan]

I am using a neo 7m as GPS for my project.

Getting garbage output like this:

⸮⸮⸮⸮⸮⸮⸮ repeated infinitely.

Here is the code:

#include <TinyGPSPlus.h>

#include <SoftwareSerial.h>


static const int RXPin = 0, TXPin = 1;

static const uint32_t GPSBaud = 115200;

double LAT;

double LON;

String ATsendString = "AT+SEND=0";
String LAT2 = "LAT";
String LON2 = "LON";

String LatString1 = ATsendString + ", " + String(LAT).length() + String(LAT) + "\r";
String LonString1 = ATsendString + ", " + String(LAT).length() + String(LAT) + "\r";




// The TinyGPS++ object

TinyGPSPlus gps;


// The serial connection to the GPS device

SoftwareSerial ss(RXPin, TXPin);

SoftwareSerial lora(2, 3);


void setup()

{

  Serial.begin(115200);

  ss.begin(GPSBaud);

  lora.begin(115200);

}


void loop()

{

  while (ss.available() > 0)

    if (gps.encode(ss.read()))

     if (gps.location.isValid()) {

      LAT = (gps.location.lat(), 6);

      LON = (gps.location.lng(), 6);

      Serial.println(LAT);

      Serial.println(LON);

  }else{
    Serial.println(F("INVALID"));
  }


  if (millis() > 5000 && gps.charsProcessed() < 10)

  {

    Serial.println(F("No GPS detected: check wiring."));
    //Serial.println("AT+ADDRESS?\r");

    while(true);

  }

}

Here is the picture:

[Railroader]

@akrishnan

garbage output like this:

⸮⸮⸮⸮⸮⸮⸮

That looks like mismatched baudrates.
My NEO6-M Uses 9600 but I don't know the NEO7. Read the datasheet and check it up. It looks odd to me.

Personally I use this stuff:

#include <SoftwareSerial.h>
#include <TinyGPS++.h>

#include <Wire.h>
#include <hd44780.h>
#include <hd44780ioClass/hd44780_I2Cexp.h>

//#define BACKLIGHT_PIN     13

hd44780_I2Cexp mylcd; // declare lcd object: auto locate & config exapander chip

// LCD geometry
#define LCD_COLS 20
#define LCD_ROWS 4

// The TinyGPS++ object
TinyGPSPlus gps;
TinyGPSCustom vdop(gps, "GPGSA", 17);//Pick upVdop

//Create GPS channel using digital i/o
#define RX 2
#define TX 3
SoftwareSerial mySerial(RX, TX);  // pick any 2 unused digital pins (not pins 0 or 1)

[red_car]

@Railroader

NEO7

Yup...

[Railroader]

@akrishnan

SoftwareSerial ss(RXPin, TXPin);

I might be wrong, being an UNO guy, but on an UNO Serial runs on pin 0 and 1 but You try to also run SoftwareSerial on the same pins. That can't work. Use pin 4 and 5 for SS, or any other free digital pins.
Software serial hardly works at that speed. I've seen here that 38400 sometimes makes trouble. Use a lower baudrate. Starting with the default 9600 is a good idea. And please don't write "urgent". That's bad. Every member asking a question is considered the same important. Using elbows is not rewarded.

[lastchancename]

I think you’re being very optimistic using SoftwareSerial at 115200 on any device.

[jremington]

@akrishnan

static const uint32_t GPSBaud = 115200;

Will not work with SoftwareSerial. As you have discovered.

[J-M-L]

and according to the image, the GPS does not seem to be connected to 0 and 1 anyway (there is nothing plugged in there)

[johnwasser]

@akrishnan

      LAT = (gps.location.lat(), 6);
      LON = (gps.location.lng(), 6);

What did you expect the ", 6" to do? You can't specify the number of decimal digits in a 'float'. That only works in Serial.print() and Serial.println().

Try:

      LAT = gps.location.lat();
      LON = gps.location.lng();