Hello, I'm new in programation and I'm trying to make a GPS tracker that record the traveled route. To do this, i'm using the following code, based on the code obtained from "Arduino Playground - GPS".
The code is working and i'm obtaining the correct data from the GPS in the serial monitor, but when I try to send the latitude (for example) to a JAVA programm that save the data in excel (My java program is working for another sensors), instead of saving the latitud as: 2545.78516 for every read, in JAVA i'm obtaining "2", "5", "4", "5", "7", "8", "5", "1", "6" in every cell. I hope you can help to understand why this is happening, thanks.
My code:
#include <string.h>
#include <ctype.h>
int ledPin = 2; // Pin 2 LED (ON)
int ledPin2 = 3; // Pin 3 if is not reading data
int rxPin = 0; // rx Pin
int txPin = 1; // tx Pin
int byteGPS=-1;
char linea[300] = "";
char comandoGPR[7] = "$GPRMC";
int cont=0;
int bien=0;
int conta=0;
int indices[13];
int checksum=0;
char date=0; l
char time=0;
char lat =0 , lon=0 , vel=0 , track=0, heading=0;
char valor1 , valor2 , valor3 , valor4 , valor5;
/////////////////////////////////////////////////////////////////////////////////////////
void setup()
{
pinMode(ledPin, OUTPUT);
pinMode(ledPin2,OUTPUT);
pinMode(rxPin, INPUT);
pinMode(txPin, OUTPUT);
Serial.begin(9600);
for (int i=0 ; i<300 ; i++) // Initialize a buffer for received data
{
linea_=' '; //Vector linea para almacenar mensaje de navegación_
* }*
}
/////////////////////////////////////////////////////////////////////////////////////////
void loop()
{
* byteGPS=Serial.read(); // Read a byte of the serial port*
* if (byteGPS == -1) // See if the serial port is empty*
* { *
* digitalWrite(ledPin2,HIGH); *
* }// Cierra if(byteGPS==-1)*
* else*
* { // Potential buffer overflow here*
* digitalWrite(ledPin, HIGH); *
* linea[conta] = byteGPS; // If there is serial port data, it is put in the buffer *
* conta++; *
* if (byteGPS==13) *
* { // NOTE: THE ACTUAL END OF TRANSMISION IS (i.e. 0x13 0x10)*
* cont=0;*
* bien=0;*
* for (int i=1;i<7;i++) // Verifies if the received command starts with $GPR*
* { *
_ if (linea*==comandoGPR[i-1])
{
bien++;
}// Cierra if(linea==comandoGPR[i-1]
}// Cierra for(int i=1;i<7;i++)
if(bien==6) // If yes, continue and process the data*
* {
for (int i=0;i<300;i++)
{
if (linea==',') // check for the position of the "," separator
{
indices[cont]=i;
cont++;
} //Cierra if(linea==',')
if (linea=='')
* {
indices[12]=i; // ... and the ""
* cont++;
}// Cierra if (linea=='')
* }// Cierra for(int i=0;i<300;i++)*_
* /////////////////////////////////////////////////////////////////////////////////////////*
* for (int i=0;i<12;i++)*
* {*
_ //switch(i){ **********************************************
// case 0 :Serial.print("Time in UTC (HhMmSs): ");break;
// case 1 :Serial.print("Status (A=OK,V=KO): ");break;
// case 2 :Serial.print("Latitude: ");break;
// case 3 :Serial.print("Direction (N/S): ");break;
// case 4 :Serial.print("Longitude: ");break;
// case 5 :Serial.print("Direction (E/W): ");break;
// case 6 :Serial.print("Velocity in knots: ");break;
// case 7 :Serial.print("Heading in degrees: ");break;
// case 8 :Serial.print("Date UTC (DdMmAa): ");break;
// case 9 :Serial.print("Magnetic degrees: ");break;
// case 10 :Serial.print("(E/W): ");break;
// case 11 :Serial.print("Mode: ");break;
// case 12 :Serial.print("Checksum: ");break;*
//}//Cierra Switch ****************************************_
_ for (int j=indices*;j<(indices[i+1]-1);j++)
{
switch(i){
case 0 : time=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(time);break;
case 1 : valor1=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(valor1);break;
case 2 : lat=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(lat);break;
case 3 : valor2=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(valor2);break;
case 4 : lon=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(lon);break;
case 5 : valor3=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(valor3);break;
case 6 : vel=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(vel);break;
case 7 : track=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(track);break;
case 8 : date=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(date);break;
case 9 : heading=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(heading);break;
case 10 : valor4=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(valor4);break;
case 11 : valor5=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(valor5);break;
case 12 : checksum=(linea[j+1]);
//Serial.print(linea[j+1]);break;
Serial.print(checksum);break;
}// Cierra Switch*
}// Cierra for(int j=indices*;j<(indices[i+1]-1);j++)
Serial.println("");
}// Cierra for (int i=0;i<12;i++)*_
/////////////////////////////////////////////////////////////////////////////////////////
* }// Cierra if(bien==6)*
* conta=0; // Reset buffer*
* for (int i=0;i<300;i++)*
* { *
_ linea*=' ';
}// Cierra for(int i=0;i<300;i++)*_
* }// Cierrra if(byteGPS==13)*
* }// Cierra else de "if (byteGPS==-1)*
* digitalWrite(ledPin,LOW);*
* digitalWrite(ledPin2,LOW);*
}// Cierra loop