Scanner Helper

Helper module to simplify the usage of NimBLE in scanning mode. More...

Detailed Description

Helper module to simplify the usage of NimBLE in scanning mode.

Files
file	nimble_scanner.h
	Scanner abstraction for NimBLE.

Data Structures
struct	nimble_scanner_cfg_t
	Scanner configuration parameters. More...
struct	nimble_scanner_info_t
	Additional information about received advertising packets. More...

Macros
#define	NIMBLE_SCANNER_EXT_ADV   0x80
	Flag to mark type for extended advertisements.

Typedefs
typedef void(*	nimble_scanner_cb) (uint8_t type, const ble_addr_t *addr, const nimble_scanner_info_t *info, const uint8_t *ad, size_t ad_len)
	Callback signature triggered by this module for each discovered advertising packet.

Enumerations
enum	{ NIMBLE_SCANNER_PASSIVE = 0x01 , NIMBLE_SCANNER_LIMITED = 0x02 , NIMBLE_SCANNER_FILTER_DUPS = 0x04 , NIMBLE_SCANNER_PHY_1M = 0x10 }
	Scan procedure configuration flags. More...
enum	{ NIMBLE_SCANNER_COMPLETE = BLE_HCI_ADV_DATA_STATUS_COMPLETE , NIMBLE_SCANNER_INCOMPLETE = BLE_HCI_ADV_DATA_STATUS_INCOMPLETE , NIMBLE_SCANNER_TRUNCATED = BLE_HCI_ADV_DATA_STATUS_TRUNCATED }
	Status flags for received advertising packets. More...

Functions
int	nimble_scanner_init (const nimble_scanner_cfg_t *params, nimble_scanner_cb disc_cb)
	Initialize the scanner module.
int	nimble_scanner_start (void)
	Start scanning using timing parameters configured on initialization.
void	nimble_scanner_stop (void)
	Stop scanning.
static bool	nimble_scanner_is_active (void)
	Get the current scanning status.
void	nimble_scanner_set_scan_duration (int32_t duration_ms)
	Set the duration for the scanning procedure.

Macro Definition Documentation

NIMBLE_SCANNER_EXT_ADV

#define NIMBLE_SCANNER_EXT_ADV   0x80

Flag to mark type for extended advertisements.

Definition at line 37 of file nimble_scanner.h.

Typedef Documentation

nimble_scanner_cb

typedef void(* nimble_scanner_cb) (uint8_t type, const ble_addr_t *addr, const nimble_scanner_info_t *info, const uint8_t *ad, size_t ad_len)

Callback signature triggered by this module for each discovered advertising packet.

Parameters

[in]	type	type of advertising packet. For legacy advertisements on of the following: BLE_HCI_ADV_RPT_EVTYPE_ADV_IND BLE_HCI_ADV_RPT_EVTYPE_DIR_IND BLE_HCI_ADV_RPT_EVTYPE_SCAN_IND BLE_HCI_ADV_RPT_EVTYPE_NONCONN_IND BLE_HCI_ADV_RPT_EVTYPE_SCAN_RSP For extended advertisements NIMBLE_SCANNER_EXT_ADV ORed with any set out of the following: BLE_HCI_ADV_CONN_MASK BLE_HCI_ADV_SCAN_MASK BLE_HCI_ADV_DIRECT_MASK BLE_HCI_ADV_SCAN_RSP_MASK
[in]	addr	advertising address of the source node
[in]	info	additional information about the advertiser
[in]	ad	advertising data
[in]	ad_len	length of ad in bytes

Definition at line 117 of file nimble_scanner.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Scan procedure configuration flags.

Enumerator
NIMBLE_SCANNER_PASSIVE	do a passive scan
NIMBLE_SCANNER_LIMITED	do limited discovery
NIMBLE_SCANNER_FILTER_DUPS	filter duplicates
NIMBLE_SCANNER_PHY_1M	scan on 1Mbit PHY

Definition at line 42 of file nimble_scanner.h.

anonymous enum

anonymous enum

Status flags for received advertising packets.

Enumerator
NIMBLE_SCANNER_COMPLETE	All fragments of a advertising message were received.
NIMBLE_SCANNER_INCOMPLETE	The advertising message is incomplete.
NIMBLE_SCANNER_TRUNCATED	Advertising message is truncated.

Definition at line 55 of file nimble_scanner.h.

Function Documentation

nimble_scanner_init()

int nimble_scanner_init	(	const nimble_scanner_cfg_t *	params,
		nimble_scanner_cb	disc_cb
	)

Initialize the scanner module.

Parameters

[in]	params	scan parameters to use
[in]	disc_cb	callback triggered of each received advertising packet

Returns

0 on success

nimble_scanner_is_active()

static bool nimble_scanner_is_active ( void  )

inlinestatic

Get the current scanning status.

Returns

true if currently scanning

false if the scanner is stopped

Definition at line 154 of file nimble_scanner.h.

nimble_scanner_set_scan_duration()

void nimble_scanner_set_scan_duration

(

int32_t

duration_ms

)

Set the duration for the scanning procedure.

     If there is an active scanning process, it will be restarted.

Parameters

[in]

duration_ms

duration of scanning procedure in ms, set to BLE_HS_FOREVER to scan without time limit

nimble_scanner_start()

int nimble_scanner_start

(

void

)

Start scanning using timing parameters configured on initialization.

Note

Scanning will run for ever unless stopped or unless a different scan duration is set with nimble_scanner_set_scan_duration

Returns

0 on success

-ECANCELED on error