nRF51 SDK: ble_gap_conn_sec_mode_t Struct Reference

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ble_gap_conn_sec_mode_t Struct Reference
Generic Access Profile (GAP) | Structures | Generic Access Profile (GAP)

GAP link requirements. More...

`#include <ble_gap.h>`

## Data Fields

uint8_t | sm: 4
uint8_t | lv: 4

## Detailed Description

GAP link requirements.

See Bluetooth Core specification, Volume 3 Part C 10.2 for details.

Security Mode 0 Level 0: No access permissions at all (this level is not defined by the Bluetooth Core specification).
Security Mode 1 Level 1: No security is needed (aka open link).
Security Mode 1 Level 2: Encrypted link required, MITM protection not necessary.
Security Mode 1 Level 3: MITM protected encrypted link required.
Security Mode 2 Level 1: Signing or encryption required, MITM protection not necessary.
Security Mode 2 Level 2: MITM protected signing required, unless link is MITM protected encrypted.

## Field Documentation

uint8_t ble_gap_conn_sec_mode_t::lv

Level (1, 2 or 3), 0 for no permissions at all.

uint8_t ble_gap_conn_sec_mode_t::sm

Security Mode (1 or 2), 0 for no permissions at all.