fsFileClose (Function)

This closes a file. When all read and write operations are done, close the file to avoid accidental write operations if the media is removed or an error occurs in the program to avoid data corruption.

Input:                

fd : FILE

FILE descriptor for the file retrieved from fsFileOpen or fsFileCreate.

Returns: INT

Declaration:

FUNCTION fsFileClose : INT;
VAR_INPUT
   fd : FILE;
END_VAR;

Example:

...
IF fsFileExists(name:="gpslog.dat") THEN
   fd := fsFileOpen(name:="gpslog.dat");
ELSE
   fd := fsFileCreate(name:="gpslog.dat");
END_IF;
IF fsFileStatus(fd:=fd) = 0 THEN
   // File open, write data
   ...
   fsFileWrite(fd:=fd,buffer:=ADDR(gps.latitude),length:=SIZEOF(gps.latitude));
   fsFileWrite(fd:=fd,buffer:=ADDR(gps.longitude),length:=SIZEOF(gps.longitude));
   ...
   fsFileClose(fd:=fd);
ELSE
   // Error when opening/creating file
   ...
END_IF;
...