| Supported Targets | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-H4 | ESP32-S3 |
|---|
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example performs below functionalities:
-
Establishes a connection on LE 1M PHY and switch to LE 2M PHY once connection is established. Then perform GATT read operation against the specified peer. Disconnect the link once this is completed.
-
Change the default LE PHY to 2M/Coded and establish a connection on that PHY. Then perform GATT read operation against the specified peer. Disconnect the link once this is completed.
This example aims at understanding how to establish connections on preferred PHY and changing LE PHY once the connection is established.
To test this demo, use any BLE GATT client app that supports extended advertising.
Note :
- Make sure to run
python -m pip install --user -r $IDF_PATH/requirements.txt -r $IDF_PATH/tools/ble/requirements.txtto install the dependency packages needed. - Currently this Python utility is only supported on Linux (BLE communication is via BLuez + DBus).
Before project configuration and build, be sure to set the correct chip target using:
idf.py set-target <chip_name>- A development board with ESP32-C3 SoC (e.g., ESP-WROVER-KIT, etc.)
- A USB cable for Power supply and programming
See Development Boards for more information about it.
Open the project configuration menu:
idf.py menuconfigRun 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.
This is the console output on successful connection:
I (322) BTDM_INIT: BT controller compile version [05195c9]
I (322) phy_init: phy_version 912,d001756,Jun 2 2022,16:28:07
I (362) system_api: Base MAC address is not set
I (362) system_api: read default base MAC address from EFUSE
I (362) BTDM_INIT: Bluetooth MAC: 84:f7:03:05:a5:f6
I (362) NimBLE_BLE_PHY_PRPH: BLE Host Task Started
I (372) NimBLE: Device Address:
I (372) NimBLE: 84:f7:03:05:a5:f6
I (382) NimBLE:
I (382) uart: queue free spaces: 8
I (4782) NimBLE: connection established; status=0
I (4782) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (4782) NimBLE: 84:f7:03:05:a5:f6
I (4782) NimBLE: our_id_addr_type=0 our_id_addr=
I (4792) NimBLE: 84:f7:03:05:a5:f6
I (4792) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (4802) NimBLE: 84:f7:03:08:4d:8e
I (4802) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (4812) NimBLE: 84:f7:03:08:4d:8e
I (4812) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (4822) NimBLE:
I (4822) NimBLE: advertise complete; reason=0
I (4832) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=1 rx_phy = 0
I (5322) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=2 rx_phy = 2
I (5732) NimBLE: disconnect; reason=531
I (5732) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (5732) NimBLE: 84:f7:03:05:a5:f6
I (5732) NimBLE: our_id_addr_type=0 our_id_addr=
I (5742) NimBLE: 84:f7:03:05:a5:f6
I (5742) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (5752) NimBLE: 84:f7:03:08:4d:8e
I (5752) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (5762) NimBLE: 84:f7:03:08:4d:8e
I (5762) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (5772) NimBLE:
I (5772) NimBLE: Default LE PHY set successfully
I (5822) NimBLE: connection established; status=0
I (5822) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (5822) NimBLE: 84:f7:03:05:a5:f6
I (5822) NimBLE: our_id_addr_type=0 our_id_addr=
I (5832) NimBLE: 84:f7:03:05:a5:f6
I (5832) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (5842) NimBLE: 84:f7:03:08:4d:8e
I (5842) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (5852) NimBLE: 84:f7:03:08:4d:8e
I (5852) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (5862) NimBLE:
I (5862) NimBLE: advertise complete; reason=0
I (5872) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=1 rx_phy = 0
I (6322) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=2 rx_phy = 2
I (6782) NimBLE: disconnect; reason=531
I (6782) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (6782) NimBLE: 84:f7:03:05:a5:f6
I (6782) NimBLE: our_id_addr_type=0 our_id_addr=
I (6792) NimBLE: 84:f7:03:05:a5:f6
I (6792) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (6802) NimBLE: 84:f7:03:08:4d:8e
I (6802) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (6812) NimBLE: 84:f7:03:08:4d:8e
I (6812) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (6822) NimBLE:
I (6822) NimBLE: Default LE PHY set successfully
I (6872) NimBLE: connection established; status=0
I (6872) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (6872) NimBLE: 84:f7:03:05:a5:f6
I (6872) NimBLE: our_id_addr_type=0 our_id_addr=
I (6882) NimBLE: 84:f7:03:05:a5:f6
I (6882) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (6892) NimBLE: 84:f7:03:08:4d:8e
I (6892) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (6902) NimBLE: 84:f7:03:08:4d:8e
I (6902) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (6912) NimBLE:
I (6912) NimBLE: advertise complete; reason=0
I (6922) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=1 rx_phy = 0
I (7372) NimBLE: LE PHY Update completed; status=0 conn_handle=1 tx_phy=3 rx_phy = 3
I (7832) NimBLE: disconnect; reason=531
I (7832) NimBLE: handle=1 our_ota_addr_type=0 our_ota_addr=
I (7832) NimBLE: 84:f7:03:05:a5:f6
I (7832) NimBLE: our_id_addr_type=0 our_id_addr=
I (7842) NimBLE: 84:f7:03:05:a5:f6
I (7842) NimBLE: peer_ota_addr_type=0 peer_ota_addr=
I (7852) NimBLE: 84:f7:03:08:4d:8e
I (7852) NimBLE: peer_id_addr_type=0 peer_id_addr=
I (7862) NimBLE: 84:f7:03:08:4d:8e
I (7862) NimBLE: conn_itvl=40 conn_latency=0 supervision_timeout=256 encrypted=0 authenticated=0 bonded=0
I (7872) NimBLE:
For any technical queries, please open an issue on GitHub. We will get back to you soon.