samples: Bluetooth: observer with 10 ms continuous scanning

Updated observer sample to use 10 ms continuous scanning
parameters.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>

Author: cvinayak

samples/bluetooth/observer/src/observer.c

@@ -88,10 +88,11 @@ static struct bt_le_scan_cb scan_callbacks = {
 
 int observer_start(void)
 {
+	/* 30 ms continuous active scanning with duplicate filtering. */
 	struct bt_le_scan_param scan_param = {
-		.type       = BT_LE_SCAN_TYPE_PASSIVE,
+		.type       = BT_LE_SCAN_TYPE_ACTIVE,
 		.options    = BT_LE_SCAN_OPT_FILTER_DUPLICATE,
-		.interval   = BT_GAP_SCAN_FAST_INTERVAL,
+		.interval   = BT_GAP_SCAN_FAST_INTERVAL_MIN,
 		.window     = BT_GAP_SCAN_FAST_WINDOW,
 	};
 	int err;

tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh

@@ -18,6 +18,6 @@ Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_chain_prj_conf\
   -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=scan
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=10e6 $@
+  -D=2 -sim_length=11e6 $@
 
 wait_for_background_jobs