tests: Bluetooth: df: Add tests for use of CTE in per adv chains

Bluetooth host may request to send more than one CTE in
connectionless mode. That is relized by periodic advertising
chained PDUs.
To check correctness of implementation of such functionality
new unit tests were added.

Signed-off-by: Piotr Pryga <[email protected]>

Author: ppryga-nordic

tests/bluetooth/df/common/src/radio_df_stub.c

@@ -38,6 +38,11 @@ void radio_switch_complete_and_phy_end_disable(void)
 {
 }
 
+void radio_switch_complete_and_phy_end_b2b_tx(uint8_t phy_curr, uint8_t flags_curr,
+					      uint8_t phy_next, uint8_t flags_next)
+{
+}
+
 void radio_df_cte_tx_aod_2us_set(uint8_t cte_len)
 {
 }

tests/bluetooth/df/connectionless_cte_chains/CMakeLists.txt

@@ -0,0 +1,27 @@
+#
+# Copyright (c) 2021 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.13.1)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(bluetooth_df_connectionless_cte_tx)
+
+FILE(GLOB app_sources src/*.c)
+SET(common_sources ${CMAKE_CURRENT_SOURCE_DIR}/../common/src/radio_df_stub.c)
+
+target_sources(app PRIVATE ${common_sources} ${app_sources})
+
+# Include paths to allow access to functions implemented in BLE controller
+target_include_directories(app PRIVATE
+			   ${CMAKE_CURRENT_SOURCE_DIR}/../common/include)
+target_include_directories(app PRIVATE
+			   ${ZEPHYR_BASE}/subsys/bluetooth/controller)
+target_include_directories(app PRIVATE
+			   ${ZEPHYR_BASE}/subsys/bluetooth/controller/include)
+target_include_directories(app PRIVATE
+			   ${ZEPHYR_BASE}/subsys/bluetooth/controller/ll_sw)
+target_include_directories(app PRIVATE
+			   ${ZEPHYR_BASE}/subsys/bluetooth/controller/ll_sw/nordic)
+target_include_directories(app PRIVATE
+			   ${ZEPHYR_BASE}/subsys/bluetooth/controller/ll_sw/nordic/lll)

tests/bluetooth/df/connectionless_cte_chains/Kconfig

@@ -0,0 +1,9 @@
+# Copyright (c) 2021 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config BT_CTLR_DF_SUPPORT
+	bool
+	default y
+
+# Include Zephyr's Kconfig.
+source "Kconfig"

tests/bluetooth/df/connectionless_cte_chains/prj.conf

@@ -0,0 +1,15 @@
+CONFIG_TEST=y
+CONFIG_ZTEST=y
+
+CONFIG_BT=y
+CONFIG_BT_EXT_ADV=y
+CONFIG_BT_PER_ADV=y
+
+CONFIG_BT_CTLR=y
+CONFIG_BT_CTLR_ADV_EXT=y
+CONFIG_BT_CTLR_ADV_PERIODIC=y
+CONFIG_BT_CTLR_DF=y
+
+CONFIG_BT_CTLR_ADVANCED_FEATURES=y
+CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
+CONFIG_BT_CTLR_DF_PER_ADV_CTE_NUM_MAX=5