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esp-idf/examples/bluetooth/nimble/ble_periodic_sync
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Leonardo Bispo 05a5dba7a4 component path relative to IDF 
Change the component path to relative to the IDF as the build will fail if the example is moved from its folder.

(cherry picked from commit 4011f5ce595d114c69c46298088440a230eed937)
Signed-off-by: Rahul Tank <rahul.tank@espressif.com>
 		2023-02-20 10:09:18 +05:30
..
main Nimble: Added return value (success / failure ) to nimble_port_init 2023-01-31 12:01:02 +05:30
CMakeLists.txt component path relative to IDF 2023-02-20 10:09:18 +05:30
README.md
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sdkconfig.defaults
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README.md

Supported Targets ESP32-C2 ESP32-C3 ESP32-S3

BLE Periodic Sync Example

(See the README.md file in the upper level 'examples' directory for more information about examples.)

This example performs passive scan for non-connectable non-scannable extended advertisement, it then establishes the periodic sync with the advertiser and then listens to the periodic advertisements.

It uses ESP32C3's Bluetooth controller and NimBLE stack based BLE host.

This example aims at understanding BLE periodic sync establishment and periodic advertisement reports.

To test this demo, use any periodic advertiser with uses extended adv data as "ESP_PERIODIC_ADV".

Note :

  • Make sure to run python -m pip install --user -r $IDF_PATH/requirements.txt -r $IDF_PATH/tools/ble/requirements.txt to install the dependency packages needed.
  • Currently this Python utility is only supported on Linux (BLE communication is via BLuez + DBus).

How to Use Example

Before project configuration and build, be sure to set the correct chip target using:

idf.py set-target <chip_name>

Hardware Required

  • A development board with ESP32/ESP32-C3 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
  • A USB cable for Power supply and programming

See Development Boards for more information about it.

Configure the Project

Open the project configuration menu:

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 for full steps to configure and use ESP-IDF to build projects.

Example Output

This is the console output on successful periodic sync:

I (311) BTDM_INIT: BT controller compile version [3a49744]
I (311) phy_init: phy_version 912,d001756,Jun  2 2022,16:28:07
I (351) system_api: Base MAC address is not set
I (351) system_api: read default base MAC address from EFUSE
I (351) BTDM_INIT: Bluetooth MAC: 84:f7:03:08:14:8e

I (361) NimBLE_BLE_PERIODIC_SYNC: BLE Host Task Started
I (941) NimBLE: Periodic sync event : 

I (941) NimBLE: Periodic adv report event: 

I (4241) NimBLE: Periodic adv report event: 

I (7541) NimBLE: Periodic adv report event: 

I (10841) NimBLE: Periodic adv report event:

Troubleshooting

For any technical queries, please open an issue on GitHub. We will get back to you soon.