Seeeduino GPS not getting a location fix.

Products & Technology Arduino & Seeeduino
#1

I have a Seeeduino LoRawan GPS and cannot get the GPS to get a latitude/longitude fix. I tried the basic, unedited examples from the wiki for NEMA and Latitude/Longitude. It does get some information from the satellites (time, # of satellites) but not location. I left it in a window for 30 minutes and took it outside to an open area for 10 minutes with no results. Any suggestions?



NEMA sketch:
[code]
void setup()
{
Serial.begin(9600);
SerialUSB.begin(115200);
}

void loop()
{
while(Serial.available())
{
SerialUSB.write(Serial.read());
}
while(SerialUSB.available())
{
Serial.write(SerialUSB.read());
}
}
[/code]

Lat and Long Sketch:
[code]
#define USE_GPS 1

#include “LoRaWan.h”

#ifdef USE_GPS
#include “TinyGPS++.h”
TinyGPSPlus gps;
#endif

void setup(void)
{

char c;

#ifdef USE_GPS
bool locked;
#endif

SerialUSB.begin(115200);
while(!SerialUSB);

lora.init();
lora.setDeviceReset();

#ifdef USE_GPS
Serial.begin(9600); // open the GPS
locked = false;

// For S&G, let's get the GPS fix now, before we start running arbitary
// delays for the LoRa section

while (!gps.location.isValid()) {
  while (Serial.available() > 0) {
    if (gps.encode(c=Serial.read())) {
      displayInfo();
      if (gps.location.isValid()) {

// locked = true;
break;
}
}
// SerialUSB.print©;
}

// if (locked)
// break;

  if (millis() > 15000 && gps.charsProcessed() < 10)
  {
    SerialUSB.println(F("No GPS detected: check wiring."));
    SerialUSB.println(gps.charsProcessed());
    while(true);
  } 
  else if (millis() > 20000) {
    SerialUSB.println(F("Not able to get a fix in alloted time."));     
    break;
  }
}

#endif
}

void loop(void)
{
displayInfo();
delay(1000);
}

void displayInfo()
{
SerialUSB.print(F(“Location: “));
if (gps.location.isValid())
{
SerialUSB.print(gps.location.lat(), 6);
SerialUSB.print(F(”,”));
SerialUSB.print(gps.location.lng(), 6);
}
else
{
SerialUSB.print(F(“INVALID”));
}

SerialUSB.print(F(" Date/Time: “));
if (gps.date.isValid())
{
SerialUSB.print(gps.date.month());
SerialUSB.print(F(”/"));
SerialUSB.print(gps.date.day());
SerialUSB.print(F("/"));
SerialUSB.print(gps.date.year());
}
else
{
SerialUSB.print(F(“INVALID”));
}

SerialUSB.print(F(" “));
if (gps.time.isValid())
{
if (gps.time.hour() < 10) SerialUSB.print(F(“0”));
SerialUSB.print(gps.time.hour());
SerialUSB.print(F(”:"));
if (gps.time.minute() < 10) SerialUSB.print(F(“0”));
SerialUSB.print(gps.time.minute());
SerialUSB.print(F(":"));
if (gps.time.second() < 10) SerialUSB.print(F(“0”));
SerialUSB.print(gps.time.second());
SerialUSB.print(F("."));
if (gps.time.centisecond() < 10) SerialUSB.print(F(“0”));
SerialUSB.print(gps.time.centisecond());
}
else
{
SerialUSB.print(F(“INVALID”));
}

SerialUSB.println();
}
[/code]