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Pointer to destination buffer.
size
Number of octets to read.
p_err
Pointer to variable that will the receive return error code from the function:
FS_ERR_NONE
File read successfully.
FS_ERR_EOF
End-of-file reached.
FS_ERR_NULL_PTR
Argument p_file/p_dest passed a NULL pointer.
FS_ERR_INVALID_TYPE
Argument p_file's type is invalid or unknown.
FS_ERR_FILE_NOT_OPEN
File not open.
FS_ERR_FILE_INVALID_OP
Invalid operation on file.
FS_ERR_DEV
Device access error.
Returned Value
The number of bytes read, if file read successful.
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