Code in setup() appears to be being ignored

Projects Programming
1

Hi there,

I'm doing a project at the moment on a teensy 3.2 which requires me to write GPS data from a GPS module out to an SD card. In my setup() I try to create a file on the SD card and then write some a fake GPS
string to it. I put some Serial.println() inside the procedures being called but they don't get printed out which makes me think that they are being ignored altogether.

#include <SD.h>
#include <SPI.h>

#define GPS_SERIAL Serial3

char lati[20];
char longdi[20];
char nmea[82] = "";
boolean gpsDone = false;
volatile int counter = 0;

int CS_PIN = 10;
File file;
char DUMP_FILE[] = "gpsDumpFile.txt";


void setup() {
  Serial.begin(115200);
  Serial3.begin(9600);

  startSD();
  createFile("gpsdumpingfile.txt");
  writeToFile("$GNGGA,,,,,,0,00,99.99,,,,,,*56");
  closeFile();

  attachInterrupt(7, readGPS, RISING);
}

void startSD() {
  Serial.println("I am here");
  pinMode(CS_PIN, OUTPUT);

  if (SD.begin())
  {
    Serial.println("SD card is ready to use.");
  } else
  {
    Serial.println("SD card initialization failed");
    return;
  }
}


int createFile(char filename[])
{
  file = SD.open(filename, FILE_WRITE);

  if (file)
  {
    Serial.println("File created successfully.");
    return 1;
  } else
  {
    Serial.println("Error while creating file.");
    return 0;
  }
}

int writeToFile(char text[])
{
  if (file)
  {
    file.println(text);
    Serial.println("Writing to file: ");
    Serial.println(text);
    return 1;
  } else
  {
    Serial.println("Couldn't write to file");
    return 0;
  }
}

void closeFile()
{
  if (file)
  {
    file.close();
    Serial.println("File closed");
  }
}

int openFile(char filename[])
{
  file = SD.open(filename);
  if (file)
  {
    Serial.println("File opened with success!");
    return 1;
  } else
  {
    Serial.println("Error opening file...");
    return 0;
  }
}

Any help would be greatly appreciated, and sorry if I've just made a super silly error! Its quite like me to do that... :slight_smile:

2

Filenames are bound to 8.3 standard. Maybe that's the problem.

3

That was it! Thanks very much :slight_smile: