GPS Logger problem

Question

I have some problems with my GPS Logger. U use Arduino Uno, NEO - 6M, SD card. Problem is in function void loop. I enter inside, but stuck on the "while loop", don't even get inside this loop. Here is code I use:

#include <SoftwareSerial.h>
#include <TinyGPS.h>
#include <SPI.h>
#include <SD.h>
#define SD_CS 4
#define FILE_BASE_NAME "Trac"
TinyGPS gps;
SoftwareSerial serial(10, 11);
File myFile;
const uint8_t BASE_NAME_SIZE = sizeof(FILE_BASE_NAME) - 1;
char fileName[] = FILE_BASE_NAME "00.csv";
void setup(){
 Serial.begin(9600);
 serial.begin(9600);
 Serial.println("SD card initialization...");
 if(!SD.begin(SD_CS))
 {
 Serial.println("Failed! Check card");
 //while(1);
 }
 Serial.println("Initialization done");
 while (SD.exists(fileName)){
 if (fileName[BASE_NAME_SIZE + 1] != '9') 
 {
 fileName[BASE_NAME_SIZE + 1]++;
 } 
 else if (fileName[BASE_NAME_SIZE] != '9') 
 {
 fileName[BASE_NAME_SIZE + 1] = '0';
 fileName[BASE_NAME_SIZE]++;
 } 
 else{
 Serial.println("Can't create file name");
 //return;
 }
 }
 myFile = SD.open(fileName, FILE_WRITE);
 if (!myFile) {
 Serial.println("open failed");
 //return;
 }
 Serial.print("opened: ");
 Serial.println(fileName);
}
void loop(){
 while (serial.available())
 {
 int c = serial.read();
 if (gps.encode(c))
 {
 long lat, lon;
 unsigned long fix_age;
 gps.get_position(&lat, &lon, &fix_age);
 Serial.print("Latitude:");Serial.println(lat);
 Serial.print("Longitude:");Serial.println(lon);
 myFile = SD.open(fileName, FILE_WRITE); 
 myFile.print(lat);
 myFile.print(", ");
 myFile.print(lon);
 myFile.println("");
 myFile.close();
 }
 }
}

If I use this code, it gives me the lat ad lon:

#include <SoftwareSerial.h>
#include <TinyGPS.h>
TinyGPS gps;
SoftwareSerial nss(10, 11);
void setup(){
 nss.begin(9600);
 Serial.begin(9600);
}
void loop()
{
 while (nss.available())
 {
 int c = nss.read();
 if (gps.encode(c))
 {
 long lat, lon;
 unsigned long fix_age;
 gps.get_position(&lat, &lon, &fix_age);
 Serial.print("Szerokosc:");Serial.println(lat);
 Serial.print("Dlugosc:");Serial.println(lon);
 }
 }
}

• jsotola: you need to describe the observed results .... you made no mention if anything actually prints in the serial monitor
• Maciej: Yes sorry, the observed results: -code with GPS only is print location on serial monitor, so GPS works fine -code with GPS and SD card only show inforation about file create and stop

Answer 1

SD uses SPI. On the Uno, SPI is on pins 10-13. You are also using pins 10 and 11 for software serial. That won't work. You need to use pins other than 10 and 11 for software serial.

• Maciej: Owww that was so simple, and stupid mistake for me. You saved my life! Thanks so much. First I changed the pins of serial to 8 and 9, it's not work, but when I change to 5 and 6 it works perfectly. Once again thanks! :)