WebbotLib AVR library
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open

Open a file.
The function will return 0 if the file has been opened successfully in which case the File variable is initialised and can then be used in the remaining file operations.
A negative return value indicates an error as follows:-
-1 = The file doesn't exist when opening for read
-2 = The file already exists when opening for write
-3 = The directory doesn't exist
-4 = You are trying to write a read only file
-5 = The disk is full
-6 = The mode parameter is invalid
Syntax
Disk. open(file,fileName,mode)
 
Parameters
TypeNameDescription
'file'
The File variable to store the details on the open file.
'fileName'
The filename in DOS format.
ie the filename can be 8 characters, a full stop, followed by a 3 character extension.
'mode'
Indicates how you want to use the file:
'r' - To open an existing file for read access
'w' - To create a new file for read write access
'a' - To write to the end of an existing file (ie append), or create the file if it doesn't exist.
Returns
int8_t
See Also
close

 

 

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