Merge branch 'feature/ble_combined_adv_scan' into 'master'

bluetooth: added example `ble_adv_scan_combined' for combined scanning and advertising

Closes BT-843 and BT-867

See merge request espressif/esp-idf!6661

Author: jack0c

examples/bluetooth/hci/README.md

@@ -17,3 +17,14 @@ See the [README.md](./controller_hci_uart/README.md) file in the example [contro
 Demonstrates interaction with controller though virtual HCI layer. In this example, simple BLE advertising is done.
 
 See the [README.md](./controller_vhci_ble_adv/README.md) file in the example [controller_vhci_ble_adv](./controller_vhci_ble_adv).
+
+## ble_adv_scan_combined
+
+Demonstrates interaction with controller. In this example, BLE advertising and scanning is done. Also scanned advertising reports are parsed and displayed.
+
+See the [README.md](./ble_adv_scan_combined/README.md) file in the example [ble_adv_scan_combined](./ble_adv_scan_combined).
+
+
+## hci_common_component
+
+This is separate component adding functionalities for HCI Layer. Since this component is just used by HCI examples, it is not placed in global components.

examples/bluetooth/hci/ble_adv_scan_combined/CMakeLists.txt

@@ -0,0 +1,9 @@
+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+# This example uses an extra component for common functions for Bluetooth HCI layer.
+set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/bluetooth/hci/hci_common_component)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(ble_adv_scan)

examples/bluetooth/hci/ble_adv_scan_combined/Makefile

@@ -0,0 +1,10 @@
+#
+# This is a project Makefile. It is assumed the directory this Makefile resides in is a
+# project subdirectory.
+#
+
+PROJECT_NAME := ble_adv_scan
+
+EXTRA_COMPONENT_DIRS = $(IDF_PATH)/examples/bluetooth/hci/hci_common_component
+
+include $(IDF_PATH)/make/project.mk

examples/bluetooth/hci/ble_adv_scan_combined/README.md

@@ -0,0 +1,9 @@
+| Supported Targets | ESP32 |
+| ----------------- | ----- |
+
+ESP-IDF Combined Bluetooth advertising and scanning
+===================================================
+
+This is a Bluetooth advertising and scanning demo with virtual HCI interface. Send Reset, ADV_PARAM, ADV_DATA and HCI_ADV_ENABLE command for BLE advertising. And SET_EVENT_MASK, SCAN_PARAMS and SCAN_START commands for BLE scanning. Scanned advertising reports from other devices are also displayed.
+
+In this example no host is used. But some of the functionalities of a host are implemented.

examples/bluetooth/hci/ble_adv_scan_combined/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "app_bt.c"
+                    INCLUDE_DIRS ".")