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central_hr

功能概述

和 central 示例工程类似， 本示例演示了扫描和连接 BLE 心率计外围设备功能。 连接成功后，周期性向外围设备发送心率信息。

环境要求

  • 支持 BLE 功能的开发板 A，运行本示例

  • BLE 心率计外围设备或者使用另外一块支持 BLE 功能的开发板 B，运行 peripheral_hr 示例

编译和烧录

示例位置：examples/bluetooth/central_hr

编译、烧录等操作请参考：快速入门

运行结果 (开发板 A)

  1. 成功运行将输出如下日志

[I] (2) main: ver: 2.0.6dev build at Oct 17 2024 17:31:25
[I] (25) bt: LE SC enabled
[I] (147) bt: Identity: 28:6D:CD:68:D7:99 (public)
[I] (147) bt: HCI: version 4.2 (0x08) revision 0x0709, manufacturer 0x070c
[I] (147) bt: LMP: version 4.2 (0x08) subver 0x0709
[I] (147) central_hr: Bluetooth initialized
[I] (149) central_hr: Scanning successfully started
[I] (963) central_hr: [DEVICE]: 51:0C:84:0F:95:F2 (random), AD evt type 3, AD data len 31, RSSI -75
[I] (1022) central_hr: [DEVICE]: 61:CB:82:A1:3F:A0 (random), AD evt type 3, AD data len 31, RSSI -73

  1. 等待开发板 B 烧录并运行 peripheral_hr 示例的固件

  2. 开发板 A 发现心率设备开发板 B 后，建立连接、查询服务列表和订阅服务

[I] (1023) central_hr: [DEVICE]: 28:6D:CE:11:22:33 (public), AD evt type 0, AD data len 11, RSSI -34
[I] (2536) central_hr: Connected: 28:6D:CE:11:22:33 (public)
[I] (2628) central_hr: [ATTRIBUTE] handle 25
[I] (2728) central_hr: [ATTRIBUTE] handle 26
[I] (2829) central_hr: [ATTRIBUTE] handle 28
[I] (2829) central_hr: [SUBSCRIBED]

  1. 订阅成功后，开发板 B 开始发送心率信息，开发板 A 日志信息

[I] (3731) central_hr: [NOTIFICATION] data 0x2000aefc length 2
[I] (4781) central_hr: [NOTIFICATION] data 0x2000aefc length 2
[I] (5731) central_hr: [NOTIFICATION] data 0x2000aefc length 2
[I] (6731) central_hr: [NOTIFICATION] data 0x2000aefc length 2
[I] (7731) central_hr: [NOTIFICATION] data 0x2000aefc length 2

运行结果 (开发板 B)

  1. 烧录 peripheral_hr 示例的固件，成功运行将输出如下日志

[I] (6) main: ver: 2.0.6dev build at Oct 17 2024 17:31:48
[I] (28) bt: LE SC enabled
[I] (158) bt: Identity: 28:6D:CE:11:22:33 (public)
[I] (158) bt: HCI: version 4.2 (0x08) revision 0x0709, manufacturer 0x070c
[I] (159) bt: LMP: version 4.2 (0x08) subver 0x0709
[I] (159) peripheral_hr: Bluetooth initialized
[I] (161) peripheral_hr: Advertising successfully started

  1. 开发板 B 接收到开发板 A 的连接请求，输出如下日志

[I] (1251) peripheral_hr: Connected

  1. 开发板 B 接收到开发板 A 的订阅消息，输出如下日志。然后定期向开发板 A 发送心率信息

[I] (1692) bt: HRS notifications enabled

备注

本示例需要和 心率计外围设备示例 协同工作