read_variable_data()

int read_variable_data	(	enum variable_data_type	data_type,
		uint8_t *	buf,
		uint32_t *	buf_len )

#include <include/bl_storage.h>

Read variable data from OTP.

Variable data starts with variable data collection ID, followed by amount of variable data entries and the variable data entries themselves. [Collection ID][Variable count][Type][Variable data length][Variable data][Type]... 2 bytes 2 bytes 1 byte 1 byte 0-255 bytes

Note

If data is not found, function does not fail. Instead, 0 length is returned.

Parameters

[in]	data_type	Type of the variable data to read.
[out]	buf	Buffer to store the variable data.
[in,out]	buf_len	On input, the size of the buffer. On output, the length of the data.

Return values

0	Variable data read successfully, or not found.
-EINVAL	No buffer provided.
-ENOMEM	Buffer too small.