Scanner#
Scanner.
The commands and events in this class provides scanning functionality. There are functionality differences depending on included components:
The bluetooth_feature_legacy_scanner component is included but the bluetooth_feature_extended_scanner is not:
The scanner can only scan advertising devices that use legacy advertising PDUs.
Received advertisements are reported in sl_bt_evt_scanner_legacy_advertisement_report events.
The bluetooth_feature_extended_scanner component is included:
The scanner can scan advertising devices that use legacy or extended advertising PDUs.
Received advertisements that use legacy advertising PDUs are reported in sl_bt_evt_scanner_legacy_advertisement_report events.
Received advertisements that use extended advertising PDUs are reported in sl_bt_evt_scanner_extended_advertisement_report events.
Modules#
Event Type Flags of Advertisement Reports
Option Flags to Specify Scanning Options
sl_bt_evt_scanner_legacy_advertisement_report
sl_bt_evt_scanner_extended_advertisement_report
Enumerations#
These values indicate which Bluetooth discovery mode to use when scanning for advertising devices.
The scanning modes.
The enum defines the scanning PHYs.
Defines the data completeness status types of an advertisement reported by the scanner.
The scanning filter policy setting determines which advertisements and scan responses are delivered to the application when scanning. See the Bluetooth Core specification Volume 6, Part B, Section 4.3.3 "Scanning filter policy" for a detailed description of this setting.
Functions#
Macros#
Enumeration Documentation#
sl_bt_scanner_discover_mode_t#
sl_bt_scanner_discover_mode_t
These values indicate which Bluetooth discovery mode to use when scanning for advertising devices.
Enumerator | |
---|---|
sl_bt_scanner_discover_limited | (0x0) Discover only limited discoverable devices. |
sl_bt_scanner_discover_generic | (0x1) Discover limited and general discoverable devices. |
sl_bt_scanner_discover_observation | (0x2) Discover non-discoverable, limited and general discoverable devices. |
3160
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_scan_mode_t#
sl_bt_scanner_scan_mode_t
The scanning modes.
Enumerator | |
---|---|
sl_bt_scanner_scan_mode_passive | (0x0) Passive scanning mode where the device only listens to advertising packets and does not transmit packets |
sl_bt_scanner_scan_mode_active | (0x1) Active scanning mode where the device sends out a scan request packet upon receiving a scannable advertising packet from a remote device and listens to the scan response packet from the remote device |
3174
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_scan_phy_t#
sl_bt_scanner_scan_phy_t
The enum defines the scanning PHYs.
Enumerator | |
---|---|
sl_bt_scanner_scan_phy_1m | (0x1) Initiate the scanning on the 1M PHY |
sl_bt_scanner_scan_phy_coded | (0x4) Initiate the scanning on the Coded PHY |
sl_bt_scanner_scan_phy_1m_and_coded | (0x5) Simultaneous scanning by initiating the scanning on the 1M and Coded PHY alternatively |
3192
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_data_status_t#
sl_bt_scanner_data_status_t
Defines the data completeness status types of an advertisement reported by the scanner.
Enumerator | |
---|---|
sl_bt_scanner_data_status_complete | (0x0) All data of the advertisement has been reported. |
sl_bt_scanner_data_status_incomplete_more | (0x1) Data of the advertisement is incomplete in this event, and more data will come in new events. |
sl_bt_scanner_data_status_incomplete_nomore | (0x2) Data of the advertisement is incomplete in this event, but no more data will come, i.e., the data of the advertisement is truncated. |
3207
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_filter_policy_t#
sl_bt_scanner_filter_policy_t
The scanning filter policy setting determines which advertisements and scan responses are delivered to the application when scanning. See the Bluetooth Core specification Volume 6, Part B, Section 4.3.3 "Scanning filter policy" for a detailed description of this setting.
Note that some filter policies require the application to include additional Bluetooth feature components. Filter policies that use the Filter Accept List require that the application has included the bluetooth_feature_accept_list component. Filter policies that require the Bluetooth controller to resolve a Resolvable Private Address require that the application has included the bluetooth_feature_resolving_list component.
Enumerator | |
---|---|
sl_bt_scanner_filter_policy_basic_unfiltered | (0x0) Advertising and scan response PDUs are processed from all devices. For directed advertising, the target address must additionally match the identity address of the local device or be a Resolvable Private Address that is resolved to the local device by the Bluetooth controller. |
sl_bt_scanner_filter_policy_basic_filtered | (0x1) Advertising and scan response PDUs are processed only from devices that the application has added to the Filter Accept List. For directed advertising, the target address must additionally match the identity address of the local device or be a Resolvable Private Address that is resolved to the local device by the Bluetooth controller. |
sl_bt_scanner_filter_policy_extended_unfiltered | (0x2) Advertising and scan response PDUs are processed from all devices. For directed advertising, the target address must additionally match the identity address of the local device or be any Resolvable Private Address. |
sl_bt_scanner_filter_policy_extended_filtered | (0x3) Advertising and scan response PDUs are processed only from devices that the application has added to the Filter Accept List. For directed advertising, the target address must additionally match the identity address of the local device or be any Resolvable Private Address. |
3241
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
Function Documentation#
sl_bt_scanner_set_parameters#
sl_status_t sl_bt_scanner_set_parameters (uint8_t mode, uint16_t interval, uint16_t window)
[in] | mode | Enum sl_bt_scanner_scan_mode_t. Passive or active scan. Values:
|
[in] | interval | The time interval when the device starts its last scan until it begins the subsequent scan. In other words, how often to scan
A variable delay occurs when switching channels at the end of each scanning interval, which is included in the scanning interval time. During the switch time, advertising packets are not received by the device. The switch time variation is use case dependent. For example, if scanning while keeping active connections, the channel switch time might be longer than when scanning without any active connections. Increasing the scanning interval reduces the amount of time in which the device can't receive advertising packets because it switches channels less often. After every scan interval, the scanner changes the frequency at which it operates. It cycles through all three advertising channels in a round robin fashion. According to the specification, all three channels must be used by a scanner. |
[in] | window | The scan window, i.e., the duration of the scan, which must be less than or equal to the
Note that the packet reception is aborted if it's started just before the scan window ends. |
Set scan parameters for subsequent scanning operations. If the device is currently scanning, new parameters will take effect when scanning is restarted.
This command sets the scanning filter policy to the default value sl_bt_scanner_filter_policy_basic_unfiltered. Use the command sl_bt_scanner_set_parameters_and_filter to set a specific scanning filter policy.
Returns
SL_STATUS_OK if successful. Error code otherwise.
3710
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_set_parameters_and_filter#
sl_status_t sl_bt_scanner_set_parameters_and_filter (uint8_t mode, uint16_t interval, uint16_t window, uint32_t flags, uint8_t filter_policy)
[in] | mode | Enum sl_bt_scanner_scan_mode_t. Passive or active scan. Values:
|
[in] | interval | The time interval when the device starts its last scan until it begins the subsequent scan. In other words, how often to scan
A variable delay occurs when switching channels at the end of each scanning interval, which is included in the scanning interval time. During the switch time, advertising packets are not received by the device. The switch time variation is use case dependent. For example, if scanning while keeping active connections, the channel switch time might be longer than when scanning without any active connections. Increasing the scanning interval reduces the amount of time in which the device can't receive advertising packets because it switches channels less often. After every scan interval, the scanner changes the frequency at which it operates. It cycles through all three advertising channels in a round robin fashion. According to the specification, all three channels must be used by a scanner. |
[in] | window | The scan window, i.e., the duration of the scan, which must be less than or equal to the
Note that the packet reception is aborted if it's started just before the scan window ends. |
[in] | flags | Additional scanner options. Value: 0 or bitmask of Option Flags to Specify Scanning Options. |
[in] | filter_policy | Enum sl_bt_scanner_filter_policy_t. The scanning filter policy to use when scanning is started. The filter policy determines which advertisements and scan responses are delivered to the application. Values:
|
Set scan parameters and the scanning filter policy for subsequent scanning operations. If the device is currently scanning, new parameters will take effect when scanning is restarted.
Returns
SL_STATUS_OK if successful. Error code otherwise.
3807
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_stop#
sl_status_t sl_bt_scanner_stop ()
Stop scanning for advertising devices. For more information about the discovery, see the sl_bt_scanner_start command.
Returns
SL_STATUS_OK if successful. Error code otherwise.
3822
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_scanner_start#
sl_status_t sl_bt_scanner_start (uint8_t scanning_phy, uint8_t discover_mode)
[in] | scanning_phy | Enum sl_bt_scanner_scan_phy_t. The scanning PHY(s). In simultaneous scanning, the stack alternates the scanning on two PHYs by switching the PHY at every scan interval. When a timing parameter is set differently on 1M and Coded PHY, the stack chooses the most relaxed value for both PHYs during simultaneous scanning, i.e., the largest scan interval or the smallest scan window. If one PHY is set to passive scanning and the other to active scanning, passive scanning is chosen for simultaneous scanning. Values:
|
[in] | discover_mode | Enum sl_bt_scanner_discover_mode_t. Bluetooth discovery Mode. Values:
|
Start the GAP discovery procedure to scan for advertising devices that use legacy or extended advertising PDUs. To cancel an ongoing discovery procedure, use the sl_bt_scanner_stop command.
The invalid parameter error will be returned if the value of scanning PHYs is invalid or the device does not support a PHY.
Received advertising packets are not filtered in any way, so multiple events will be received for every advertising device in range.
Returns
SL_STATUS_OK if successful. Error code otherwise.
Events
sl_bt_evt_scanner_legacy_advertisement_report - This event is triggered for reporting a received advertisement that uses legacy advertising PDUs if the application includes the bluetooth_feature_legacy_scanner or bluetooth_feature_extended_scanner component.
sl_bt_evt_scanner_extended_advertisement_report - This event is triggered for reporting a received advertisement that uses extended advertising PDUs if the application includes the bluetooth_feature_extended_scanner component.
3878
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
Macro Definition Documentation#
sl_bt_cmd_scanner_set_parameters_id#
#define sl_bt_cmd_scanner_set_parameters_idValue:
0x06050020
3147
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_cmd_scanner_set_parameters_and_filter_id#
#define sl_bt_cmd_scanner_set_parameters_and_filter_idValue:
0x07050020
3148
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_cmd_scanner_stop_id#
#define sl_bt_cmd_scanner_stop_idValue:
0x05050020
3149
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_cmd_scanner_start_id#
#define sl_bt_cmd_scanner_start_idValue:
0x03050020
3150
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_rsp_scanner_set_parameters_id#
#define sl_bt_rsp_scanner_set_parameters_idValue:
0x06050020
3151
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_rsp_scanner_set_parameters_and_filter_id#
#define sl_bt_rsp_scanner_set_parameters_and_filter_idValue:
0x07050020
3152
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_rsp_scanner_stop_id#
#define sl_bt_rsp_scanner_stop_idValue:
0x05050020
3153
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h
sl_bt_rsp_scanner_start_id#
#define sl_bt_rsp_scanner_start_idValue:
0x03050020
3154
of file /mnt/raid/workspaces/ws.iS2YF8Lrv/overlay/gsdk/protocol/bluetooth/build/native/sw/bgapi/inc/sl_bt_api.h