feat(nimble): Added example support for Current Time Service

components/bt/CMakeLists.txt

@@ -619,6 +619,7 @@ if(CONFIG_BT_ENABLED)
                     host/nimble/nimble/nimble/host/services/ipss/include
                     host/nimble/nimble/nimble/host/services/lls/include
                     host/nimble/nimble/nimble/host/services/prox/include
+                    host/nimble/nimble/nimble/host/services/cts/include
                     host/nimble/nimble/nimble/host/services/tps/include
                     host/nimble/nimble/nimble/host/util/include
                     host/nimble/nimble/nimble/host/store/ram/include
@@ -639,6 +640,7 @@ if(CONFIG_BT_ENABLED)
                     "host/nimble/nimble/nimble/host/services/dis/src/ble_svc_dis.c"
                     "host/nimble/nimble/nimble/host/services/lls/src/ble_svc_lls.c"
                     "host/nimble/nimble/nimble/host/services/prox/src/ble_svc_prox.c"
+                    "host/nimble/nimble/nimble/host/services/cts/src/ble_svc_cts.c"
                     "host/nimble/nimble/nimble/host/src/ble_hs_conn.c"
                     "host/nimble/nimble/nimble/host/src/ble_store_util.c"
                     "host/nimble/nimble/nimble/host/src/ble_sm.c"

examples/bluetooth/nimble/ble_cts/cts_cent/CMakeLists.txt

@@ -0,0 +1,6 @@
+# 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 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(cts_cent)

examples/bluetooth/nimble/ble_cts/cts_cent/README.md

@@ -0,0 +1,156 @@
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-S3 |
+| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- |
+
+# BLE CTS Cent Example
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+This example creates GATT client and performs passive scan, it then connects to peripheral device if the device advertises connectability and the device advertises support for the Current Time Service (0x1805) as primary service UUID.
+
+It performs following GATT operations against the specified peer:
+
+* Reads the Current Time characteristic.
+
+If the peer does not support a required service, characteristic, or descriptor, then the peer lied when it claimed support for the Current Time Service! When this happens, or if a GATT procedure fails, this function immediately terminates the connection.
+
+It uses ESP32's Bluetooth controller and NimBLE stack based BLE host.
+
+This example aims at understanding BLE service discovery, connection, encryption and characteristic operations.
+
+To test this demo, use any BLE GATT server app that advertises support for the Current Time Service (0x1805) and includes it in the GATT database.
+
+## How to Use Example
+
+Before project configuration and build, be sure to set the correct chip target using:
+
+```bash
+idf.py set-target <chip_name>
+```
+
+### Hardware Required
+
+* A development board with ESP32/ESP32-C2/ESP32-C3/ESP32-S3/ESP32-H2/ESP32-C6 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
+* A USB cable for Power supply and programming
+
+See [Development Boards](https://www.espressif.com/en/products/devkits) for more information about it.
+
+### Configure the Project
+
+Open the project configuration menu:
+
+```bash
+idf.py menuconfig
+```
+
+In the `Example Configuration` menu:
+
+* Change the `Peer Address` option if needed.
+
+### Build and Flash
+
+Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the [Getting Started Guide](https://idf.espressif.com/) for full steps to configure and use ESP-IDF to build projects.
+
+## Example Output
+
+This is the console output on successful connection:
+
+```
+I (358) BLE_INIT: BT controller compile version [59725b5]
+I (358) BLE_INIT: Bluetooth MAC: 60:55:f9:68:c4:fa
+I (368) phy_init: phy_version 1110,9c20f0a,Jul 27 2023,10:42:54
+I (408) NimBLE_CTS_CENT: BLE Host Task Started
+I (408) NimBLE: GAP procedure initiated: stop advertising.
+
+I (408) NimBLE: GAP procedure initiated: discovery;
+I (408) NimBLE: own_addr_type=0 filter_policy=0 passive=1 limited=0 filter_duplicates=1
+I (418) NimBLE: duration=forever
+I (428) NimBLE:
+
+I (428) main_task: Returned from app_main()
+I (628) NimBLE: GAP procedure initiated: connect;
+I (628) NimBLE: peer_addr_type=1 peer_addr=
+I (628) NimBLE: 6b:93:b5:30:71:cf
+I (638) NimBLE:  scan_itvl=16 scan_window=16 itvl_min=24 itvl_max=40 latency=0 supervision_timeout=256 min_ce_len=0 max_ce_len=0 own_addr_type=0
+I (648) NimBLE:
+
+I (908) NimBLE: Connection established
+I (908) NimBLE:
+
+I (918) NimBLE: Connection secured
+
+I (1208) NimBLE: received indication; conn_handle=1 attr_handle=3 attr_len=4
+
+I (1208) NimBLE: GAP procedure initiated:
+I (1208) NimBLE: connection parameter update; conn_handle=1 itvl_min=6 itvl_max=6 latency=0 supervision_timeout=500 min_ce_len=0 max_ce_len=0
+I (1228) NimBLE:
+
+I (3568) NimBLE: encryption change event; status=0
+I (3568) NimBLE: GATT procedure initiated: discover all services
+
+I (3608) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3608) NimBLE: start_handle=1 end_handle=9
+
+I (3658) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3658) NimBLE: start_handle=20 end_handle=26
+
+I (3688) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3688) NimBLE: start_handle=134 end_handle=141
+
+I (3718) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3718) NimBLE: start_handle=142 end_handle=151
+
+I (3758) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3758) NimBLE: start_handle=152 end_handle=158
+
+I (3788) NimBLE: GATT procedure initiated: discover all characteristics;
+I (3788) NimBLE: start_handle=159 end_handle=65535
+
+I (3818) NimBLE: GATT procedure initiated: discover all descriptors;
+I (3818) NimBLE: chr_val_handle=136 end_handle=137
+
+I (3838) NimBLE: GATT procedure initiated: discover all descriptors;
+I (3838) NimBLE: chr_val_handle=144 end_handle=148
+
+I (3898) NimBLE: GATT procedure initiated: discover all descriptors;
+I (3898) NimBLE: chr_val_handle=150 end_handle=151
+
+I (3908) NimBLE: GATT procedure initiated: discover all descriptors;
+I (3908) NimBLE: chr_val_handle=161 end_handle=162
+
+I (3928) NimBLE: GATT procedure initiated: discover all descriptors;
+I (3928) NimBLE: chr_val_handle=164 end_handle=65535
+
+I (3938) NimBLE: Service discovery complete; status=0 conn_handle=1
+
+I (3938) NimBLE: GATT procedure initiated: read;
+I (3938) NimBLE: att_handle=161
+
+I (3958) NimBLE: Read Current time complete; status=0 conn_handle=1
+I (3958) NimBLE:  attr_handle=161 value=
+I (3958) NimBLE: 0xe7
+I (3958) NimBLE: :0x07
+I (3958) NimBLE: :0x08
+I (3968) NimBLE: :0x1e
+I (3968) NimBLE: :0x14
+I (3968) NimBLE: :0x25
+I (3978) NimBLE: :0x02
+I (3978) NimBLE: :0x03
+I (3978) NimBLE: :0xf6
+I (3978) NimBLE: :0x00
+I (3988) NimBLE:
+
+I (3988) NimBLE_CTS_CENT: Date : 30/8/2023
+I (3998) NimBLE_CTS_CENT: hours : 20 minutes : 37
+I (3998) NimBLE_CTS_CENT: seconds : 2
+
+I (4008) NimBLE_CTS_CENT: fractions : 0
+
+```
+
+## Troubleshooting
+
+For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.

examples/bluetooth/nimble/ble_cts/cts_cent/main/CMakeLists.txt

@@ -0,0 +1,4 @@
+set(srcs "main.c")
+
+idf_component_register(SRCS "${srcs}"
+                       INCLUDE_DIRS ".")

examples/bluetooth/nimble/ble_cts/cts_cent/main/Kconfig.projbuild

@@ -0,0 +1,27 @@
+menu "Example Configuration"
+
+    config EXAMPLE_PEER_ADDR
+        string "Peer Address"
+        default "ADDR_ANY"
+        help
+            Enter the peer address in aa:bb:cc:dd:ee:ff form to connect to a specific peripheral
+
+    config EXAMPLE_ENCRYPTION
+        bool
+        prompt "Enable Link Encryption"
+        default y
+        help
+            This enables bonding and encryption after connection has been established.
+
+    config EXAMPLE_EXTENDED_ADV
+        bool
+        depends on SOC_BLE_50_SUPPORTED
+        default y if SOC_ESP_NIMBLE_CONTROLLER
+        select BT_NIMBLE_EXT_ADV
+        prompt "Enable Extended Adv"
+        help
+            Use this option to enable extended advertising in the example.
+            If this option is disabled, ensure config BT_NIMBLE_EXT_ADV is
+            also disabled from Nimble stack menuconfig
+
+endmenu

examples/bluetooth/nimble/ble_cts/cts_cent/main/ble_cts_cent.h

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2017-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef H_BLE_CTS_CENT_
+#define H_BLE_CTS_CENT_
+
+#include "modlog/modlog.h"
+#include "esp_central.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct ble_hs_adv_fields;
+struct ble_gap_conn_desc;
+struct ble_hs_cfg;
+union ble_store_value;
+union ble_store_key;
+
+/* 16 BIT CCCD UUID */
+#define BLE_SVC_CTS_DSC_CLT_CFG_UUID16                       0x2902
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

examples/bluetooth/nimble/ble_cts/cts_cent/main/idf_component.yml

@@ -0,0 +1,3 @@
+dependencies:
+  nimble_central_utils:
+    path: ${IDF_PATH}/examples/bluetooth/nimble/common/nimble_central_utils