Synchronization

Synchronization.

Modules

sl_bt_evt_sync_opened
Indicates that a periodic advertising synchronization has been opened.
 
sl_bt_evt_sync_data
Reports a received periodic advertisement packet.
 
sl_bt_evt_sync_closed
Indicates that periodic advertising synchronization was lost or a synchronization establishment procedure was canceled.
 

Enumerations

enum  sl_bt_sync_advertiser_clock_accuracy_t {
  sl_bt_sync_clock_accuracy_500 = 0x500, sl_bt_sync_clock_accuracy_250 = 0x250, sl_bt_sync_clock_accuracy_150 = 0x150, sl_bt_sync_clock_accuracy_100 = 0x100,
  sl_bt_sync_clock_accuracy_75 = 0x75, sl_bt_sync_clock_accuracy_50 = 0x50, sl_bt_sync_clock_accuracy_30 = 0x30, sl_bt_sync_clock_accuracy_20 = 0x20
}
 Advertiser Clock Accuracy.
 

Functions

sl_status_t sl_bt_sync_set_parameters (uint16_t skip, uint16_t timeout, uint32_t flags)
 
sl_status_t sl_bt_sync_open (bd_addr address, uint8_t address_type, uint8_t adv_sid, uint16_t *sync)
 
sl_status_t sl_bt_sync_close (uint16_t sync)
 

Detailed Description

Synchronization.

Provides periodic advertising synchronization feature.

Enumeration Type Documentation

◆ sl_bt_sync_advertiser_clock_accuracy_t

Advertiser Clock Accuracy.

Enumerator
sl_bt_sync_clock_accuracy_500 

(0x500) Clock accuracy 500 ppm

sl_bt_sync_clock_accuracy_250 

(0x250) Clock accuracy 250 ppm

sl_bt_sync_clock_accuracy_150 

(0x150) Clock accuracy 150 ppm

sl_bt_sync_clock_accuracy_100 

(0x100) Clock accuracy 100 ppm

sl_bt_sync_clock_accuracy_75 

(0x75) Clock accuracy 75 ppm

sl_bt_sync_clock_accuracy_50 

(0x50) Clock accuracy 50 ppm

sl_bt_sync_clock_accuracy_30 

(0x30) Clock accuracy 30 ppm

sl_bt_sync_clock_accuracy_20 

(0x20) Clock accuracy 20 ppm

Function Documentation

◆ sl_bt_sync_set_parameters()

sl_status_t sl_bt_sync_set_parameters ( uint16_t  skip,
uint16_t  timeout,
uint32_t  flags 
)

Configure periodic advertiser synchronization parameters. The specified parameters take effect immediately for all advertisers that have not already established synchronization.

The application should determine skip and timeout values based on the periodic advertising interval provided by the advertiser. If skip and timeout are used, select appropriate values so that they allow a few receiving attempts. Periodic advertising intervals are reported in event sl_bt_evt_scanner_scan_report.

Parameters
[in]skipThe maximum number of periodic advertising packets that can be skipped after a successful receive.
  • Range: 0x0000 to 0x01F3
  • Default value: 0
[in]timeoutThe maximum permitted time between successful receives. If this time is exceeded, synchronization is lost. Unit: 10 ms.
  • Range: 0x06 to 0xFFFF
  • Unit: 10 ms
  • Time range: 100 ms ms to 163.84 s
  • Default value: 1000 ms
[in]flagsNo flags defined currently
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_sync_open()

sl_status_t sl_bt_sync_open ( bd_addr  address,
uint8_t  address_type,
uint8_t  adv_sid,
uint16_t *  sync 
)

Start establishing synchronization with the specified periodic advertiser in parallel with other advertisers given in previous invocations of this command. The stack will internally enable scanning when needed so that synchronizations can occur. The scanning responses from the internal scanning are not passed to the application unless the application has also enabled scanning.

Advertisers that have not already synced before the invocation of this command will be synced using the skip and timeout values configured in the most recent invocation of command sl_bt_evt_scanner_scan_report.

Parameters
[in]addressAddress of the advertiser
[in]address_typeAdvertiser address type. Values:
  • 0: Public address
  • 1: Random address
[in]adv_sidAdvertising set identifier
[out]syncA handle that will be assigned to the periodic advertising synchronization after the synchronization is established. This handle is valid only if the result code of this response is SL_STATUS_OK.
Returns
SL_STATUS_OK if successful. Error code otherwise.

Events

  • sl_bt_evt_sync_opened - Triggered after the synchronization is established.
  • sl_bt_evt_sync_data - Indicates that a periodic advertisement packet is received.
  • sl_bt_evt_sync_closed - Triggered after periodic advertising synchronization was lost or explicitly closed, or a synchronization establishment procedure was canceled.

◆ sl_bt_sync_close()

sl_status_t sl_bt_sync_close ( uint16_t  sync)

Closes a periodic advertising synchronization or cancels an ongoing attempt of establishing a synchronization.

Parameters
[in]syncPeriodic advertising synchronization handle
Returns
SL_STATUS_OK if successful. Error code otherwise.

Events

  • sl_bt_evt_sync_closed - Triggered after a periodic advertising synchronization has been closed or canceled.