ESP32实现蓝牙功能,一对多主机,同时支持开启多个notify

| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-S3 | | ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | # ESP-IDF Gatt Client Multi Connection Example This example shows the usage of APIs to create a GATT multi-connection client. It can be used to connect to three GATT servers at the same time. To test this example, please run [gatt_server_demo](../gatt_server) to create three GATT server devices, namely ESP_GATTS_DEMO_a, ESP_GATTS_DEMO_b and ESP_GATTS_DEMO_c, `Gatt_client_multi_connection_demo` will connect to these three gatt server demos, and then exchange data. Please, check this [tutorial](tutorial/Gatt_Client_Multi_Connection_Example_Walkthrough.md) for more information about this example. ## 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> ``` The code can be modified to connect to more devices (up to 4 devices by default). If you need to connect to more devices (more than 4 devices), you need to change `BT/BLE MAX ACL CONNECTIONS` in menuconfig. ### Hardware Required * A development board with ESP32/ESP32-C3/ESP32-C2/ESP32-H2/ESP32-S3 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. ### 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 ``` I (0) cpu_start: Starting scheduler on APP CPU. I (512) BTDM_INIT: BT controller compile version [1342a48] I (522) system_api: Base MAC address is not set I (522) system_api: read default base MAC address from EFUSE I (522) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07 I (932) GATTC_MULTIPLE_DEMO: REG_EVT I (932) GATTC_MULTIPLE_DEMO: REG_EVT I (932) GATTC_MULTIPLE_DEMO: REG_EVT I (942) GATTC_MULTIPLE_DEMO: Scan start success I (1072) GATTC_MULTIPLE_DEMO: 38 68 a4 69 bb 7c I (1072) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 28, Scan Response Len 0 I (1072) GATTC_MULTIPLE_DEMO: Searched Device Name Len 0 I (1082) GATTC_MULTIPLE_DEMO: I (1102) GATTC_MULTIPLE_DEMO: 08 ef 3b a7 04 41 I (1102) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 9, Scan Response Len 15 I (1102) GATTC_MULTIPLE_DEMO: Searched Device Name Len 13 I (1112) GATTC_MULTIPLE_DEMO: LG CM2760(41) I (1112) GATTC_MULTIPLE_DEMO: I (1222) GATTC_MULTIPLE_DEMO: 38 68 a4 69 bb 7c I (1222) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 28, Scan Response Len 0 I (1222) GATTC_MULTIPLE_DEMO: Searched Device Name Len 0 I (1232) GATTC_MULTIPLE_DEMO: I (1372) GATTC_MULTIPLE_DEMO: 38 68 a4 69 bb 7c I (1372) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 28, Scan Response Len 0 I (1372) GATTC_MULTIPLE_DEMO: Searched Device Name Len 0 I (1382) GATTC_MULTIPLE_DEMO: I (1412) GATTC_MULTIPLE_DEMO: 08 ef 3b a7 04 41 I (1412) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 9, Scan Response Len 15 I (1422) GATTC_MULTIPLE_DEMO: Searched Device Name Len 13 I (1422) GATTC_MULTIPLE_DEMO: LG CM2760(41) I (1432) GATTC_MULTIPLE_DEMO: I (1522) GATTC_MULTIPLE_DEMO: 38 68 a4 69 bb 7c I (1522) GATTC_MULTIPLE_DEMO: Searched Adv Data Len 28, Scan Response Len 0 I (1522) GATTC_MULTIPLE_DEMO: Searched Device Name Len 0 I (1532) GATTC_MULTIPLE_DEMO: ``` ## 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.