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ble_gatts_attr_t Struct Reference

ble_gatts_attr_t Struct Reference
[Structures]

GATT Attribute. More...

#include <ble_gatts.h>

Data Fields

ble_uuid_tp_uuid
 Pointer to the attribute UUID.
ble_gatts_attr_md_tp_attr_md
 Pointer to the attribute metadata structure.
uint16_t init_len
 Initial attribute value length in bytes.
uint16_t init_offs
 Initial attribute value offset in bytes.
uint16_t max_len
 Maximum attribute value length in bytes, see Maximum attribute lengths for maximum values.
uint8_t * p_value
 Pointer to the attribute data.

Detailed Description

GATT Attribute.

Definition at line 186 of file ble_gatts.h.


Field Documentation

uint16_t init_len

Initial attribute value length in bytes.

Definition at line 190 of file ble_gatts.h.

uint16_t init_offs

Initial attribute value offset in bytes.

If different from zero, the first init_offs bytes of the attribute value will be left uninitialized.

Definition at line 191 of file ble_gatts.h.

uint16_t max_len

Maximum attribute value length in bytes, see Maximum attribute lengths for maximum values.

Definition at line 192 of file ble_gatts.h.

Pointer to the attribute metadata structure.

Definition at line 189 of file ble_gatts.h.

Pointer to the attribute UUID.

Definition at line 188 of file ble_gatts.h.

uint8_t* p_value

Pointer to the attribute data.

Please note that if the BLE_GATTS_VLOC_USER value location is selected in the attribute metadata, this will have to point to a buffer that remains valid through the lifetime of the attribute. This excludes usage of automatic variables that may go out of scope or any other temporary location. The stack may access that memory directly without the application's knowledge. For writable characteristics, this value must not be a location in flash memory.

Definition at line 193 of file ble_gatts.h.