// Open up file on SD card with read permissions
int SDFileOpenRead() {
FRESULT iFResult = FR_OK;
// If a file is already open, close it.
if(fileOpen) {
SDCloseFile();
}
iFResult = f_open(&fil, "data.txt", FA_OPEN_EXISTING | FA_READ);
// Check return status to see if opened successfully
if(iFResult != FR_OK) {
#ifdef DEBUG_MODE
UARTprintf("\tdata.TXT failed to open for reading\n");
#endif
// Raise flag in status register
RaiseSDFileOpenReadErrFlag();
return 1;
}
else {
#ifdef DEBUG_MODE
UARTprintf("\tdata.TXT opened for reading\n");
#endif
fileOpen = true;
return 0;
}
}
// Open/create file on SD card with write permissions
int SDFileOpenWrite() {
FRESULT iFResult = FR_OK;
// If a file is already open, close it.
if(fileOpen) {
SDCloseFile();
}
// If file overwrite is true, overwrite the SD card file
if(GetSDFileOverwrite()) {
iFResult = f_open(&fil, "data.txt", FA_CREATE_ALWAYS | FA_WRITE);
}
// Otherwise open and append
else {
iFResult = f_open(&fil, "data.txt", FA_OPEN_ALWAYS | FA_WRITE);
}
// Check return status to see if opened successfully
if(iFResult != FR_OK) {
#ifdef DEBUG_MODE
UARTprintf("\tDATA.TXT failed to open for writing\n");
#endif
return 1;
}
else {
#ifdef DEBUG_MODE
UARTprintf("\tDATA.TXT opened for writing\n");
#endif
fileOpen = true;
return 0;
}
}
