sd_card_open_write_close()

int sd_card_open_write_close	(	char const *const	filename,
		char const *const	data,
		size_t *	size
	)

Write data from buffer into the file.

Note

If the file already exists, data will be appended to the end of the file.

Parameters

[in]	filename	Name of the target file for writing, the default location is the root directoy of SD card, accept absolute path under root of SD card.
[in]	data	which is going to be written into the file.
[in,out]	size	Pointer to the number of bytes which is going to be written. The actual written size will be returned.

Return values

0	on success.
-EPERM	SD card operation is ongoing somewhere else.
-ENODEV	SD init failed. SD card likely not inserted.
Otherwise,error	from underlying drivers.