Hi Guys,
I just got an Arudino Uno R3 for the first time, never did anything with electronics before since I mainly study on web development. I am currently doing an assignment that will use a GPS + Sim card to transmit the current position over to Google maps (on a website that I will be developing) which I will be doing in the near future.
My problem is that I have connected the GPS to the Arduino board using the sparkfun shield. After some time I got a fix on my GPS (as the red light is flashing). However when I open the serial monitor from my Arudino IDE all I get is a whole lot of 'y' characters (screenshot attached) instead of the NMEA sentences.
Before I uncomment the below line from the script, i get this => CHARS=47 SENTENCES=0 CSUM ERR=0
But once I uncomment it, I get just 'Y' characters one next to the other.
//Serial.write(c); // uncomment this line if you want to see the GPS data flowing
I used the example from the IDE (Tiny GPS Simple_Test)
This is my code:
#include <SoftwareSerial.h>
#include <TinyGPS.h>
/* 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(1, 0);
void setup()
{
Serial.begin(115200);
ss.begin(4800);
Serial.print("Simple TinyGPS library v. "); Serial.println(TinyGPS::library_version());
Serial.println("by Mikal Hart");
Serial.println();
}
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 (ss.available())
{
char c = ss.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());
}
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 **");
}
The problem might be very simple, but i'm relatively new to Arudino and any help would be greatly appreciated.
Thank you in advance.
catechumen(novice)
