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Bluetooth: Allow to configure background scan window and interval

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Applications may require different scan windows and interval depending
on expected re-connection time or peer devices advertising parameters.
Default to GAP recommended slow values.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
This commit is contained in:
Szymon Janc 2018-09-26 19:09:22 +02:00 • committed by Carles Cufí
commit 063123f35a
2 changed files with 13 additions and 2 deletions
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11
subsys/bluetooth/host/Kconfig
View file

@ -389,6 +389,17 @@ endif # BT_GAP_PERIPHERAL_PREF_PARAMS
endif # BT_CONN endif # BT_CONN
if BT_OBSERVER
config BT_BACKGROUND_SCAN_INTERVAL
int "Scan interval used for background scanning in 0.625 ms units"
default 2048
range 4 16384
config BT_BACKGROUND_SCAN_WINDOW
int "Scan window used for background scanning in 0.625 ms units"
default 18
range 4 16384
endif # BT_OBSERVER
config BT_SCAN_WITH_IDENTITY config BT_SCAN_WITH_IDENTITY
bool "Perform active scanning using local identity address" bool "Perform active scanning using local identity address"
depends on !BT_PRIVACY && (BT_CENTRAL || BT_OBSERVER) depends on !BT_PRIVACY && (BT_CENTRAL || BT_OBSERVER)

4
subsys/bluetooth/host/hci_core.c
View file

@ -3175,8 +3175,8 @@ int bt_le_scan_update(bool fast_scan)
interval = BT_GAP_SCAN_FAST_INTERVAL; interval = BT_GAP_SCAN_FAST_INTERVAL;
window = BT_GAP_SCAN_FAST_WINDOW; window = BT_GAP_SCAN_FAST_WINDOW;
} else { } else {
interval = BT_GAP_SCAN_SLOW_INTERVAL_1; interval = CONFIG_BT_BACKGROUND_SCAN_INTERVAL;
window = BT_GAP_SCAN_SLOW_WINDOW_1; window = CONFIG_BT_BACKGROUND_SCAN_WINDOW;
} }
return start_le_scan(BT_HCI_LE_SCAN_PASSIVE, interval, window); return start_le_scan(BT_HCI_LE_SCAN_PASSIVE, interval, window);