GATT Attribute structure. More...

#include <gatt.h>

Data Fields
const struct bt_uuid *	uuid

ssize_t(*	read )(struct bt_conn conn, const struct bt_gatt_attr attr, void *buf, uint16_t len, uint16_t offset)
	Attribute read callback. More...

ssize_t(*	write )(struct bt_conn conn, const struct bt_gatt_attr attr, const void *buf, uint16_t len, uint16_t offset, uint8_t flags)
	Attribute write callback. More...

void *	user_data

uint16_t	handle

uint8_t	perm

Detailed Description

GATT Attribute structure.

Field Documentation

uint16_t bt_gatt_attr::handle

Attribute handle

uint8_t bt_gatt_attr::perm

Attribute permissions

ssize_t(* bt_gatt_attr::read) (struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, uint16_t len, uint16_t offset)

Attribute read callback.

The callback can also be used locally to read the contents of the attribute in which case no connection will be set.

Parameters

conn	The connection that is requesting to read
attr	The attribute that's being read
buf	Buffer to place the read result in
len	Length of data to read
offset	Offset to start reading from

Returns: Number fo bytes read, or in case of an error BT_GATT_ERR() with a specific ATT error code.

void* bt_gatt_attr::user_data

Attribute user data

const struct bt_uuid* bt_gatt_attr::uuid

Attribute UUID

ssize_t(* bt_gatt_attr::write) (struct bt_conn *conn, const struct bt_gatt_attr *attr, const void *buf, uint16_t len, uint16_t offset, uint8_t flags)

Attribute write callback.

Parameters

conn	The connection that is requesting to write
attr	The attribute that's being written
buf	Buffer with the data to write
len	Number of bytes in the buffer
offset	Offset to start writing from
flags	Flags (BT_GATT_WRITE_*)

Returns: Number of bytes written, or in case of an error BT_GATT_ERR() with a specific ATT error code.

The documentation for this struct was generated from the following file: