sd_card_list_files()

int sd_card_list_files	(	char const *const	path,
		char *	buf,
		size_t *	buf_size
	)

Print out the contents under SD card root path and write the content to buffer.

Parameters

[in]	path	Path of the folder which is going to be listed. If assigned path is null, then listing the contents under root. If assigned path doesn't exist, an error will be returned.
[out]	buf	Buffer where data is written. If set to NULL, it will be ignored.
[in,out]	buf_size	Buffer size.

Return values

0	on success.
-EPERM	SD card operation is ongoing somewhere else.
-ENODEV	SD init failed. SD card likely not inserted.
-EINVAL	Failed to append to buffer.
-FR_INVALID_NAME	Path is too long.
Otherwise,error	from underlying drivers.