【单片机】nRF52832 实现停止蓝牙广播接口 |
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前言
有一个项目使用了 nRF52832 芯片作为主控，其中有用到蓝牙功能。在对蓝牙接口进一步封装的时候，发现 SDK 居然没有停止广播的接口，咨询了代理 FAE，对方也没有找到关闭广播的接口。后来通过分析代码，修改了 SDK 解决了这个问题。这次发出来是因为遇到很多人在问这个问题，记得自己解决过，就发出来。 遗憾的是，当初为了赶项目，很多问题解决之后没有及时做记录，现在已经记不清当时的解决思路了，毕竟第一次接触 Nordic 芯片，后面又基本没用上，不过 Nordic SDK 的代码风格还是很赞的。 想不明白，为什么 Nordic 不提供关闭蓝牙广播的接口，SDK已经迭代了那么多个版本了，可能是因为对功耗影响不大所以没有必要提供了？还是说有其他的方式可以关闭蓝牙广播接口？ 补丁适用于 SDK15 From 67a4b2c241626e51192f6e1d528a07ba0ac4ab8d Mon Sep 17 00:00:00 2001 From: lmx Date: Thu, 6 Jun 2019 18:37:50 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9SDK:=20ble=5Fadvertising,=20?= =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E5=8F=AF=E4=BB=A5=E9=9A=8F=E6=84=8F=E5=81=9C?= =?UTF-8?q?=E6=AD=A2=E5=B9=BF=E6=92=AD=E7=9A=84=E5=8A=9F=E8=83=BD?= MIME-Version: 1.0 Content-Type: text/plain; Content-Transfer-Encoding: 8bit --- .../ble/ble_advertising/ble_advertising.c | 29 ++++++++++++++----- .../ble/ble_advertising/ble_advertising.h | 11 +++++++ 2 files changed, 33 insertions(+), 7 deletions(-) diff --git a/components/ble/ble_advertising/ble_advertising.c b/components/ble/ble_advertising/ble_advertising.c index e09c2dd..5907b2f 100644 --- a/components/ble/ble_advertising/ble_advertising.c +++ b/components/ble/ble_advertising/ble_advertising.c @@ -459,6 +459,7 @@ uint32_t ble_advertising_init(ble_advertising_t * const p_advertising p_advertising->error_handler = p_init->error_handler; p_advertising->current_slave_link_conn_handle = BLE_CONN_HANDLE_INVALID; p_advertising->p_adv_data = &p_advertising->adv_data; + p_advertising->flags = BLE_ADVERTISING_FLAGS_ENABLE; // add lmx 20190606 memset(&p_advertising->peer_address, 0, sizeof(p_advertising->peer_address)); @@ -531,6 +532,18 @@ static bool phy_is_valid(uint32_t const * const p_phy) } } +// add lmx 20190606 设置标志位 +uint32_t ble_advertising_set_flag(ble_advertising_t * const p_advertising, ble_advertising_flags_t flags) +{ + if (p_advertising->initialized == false) + { + return NRF_ERROR_INVALID_STATE; + } + + p_advertising->flags = flags; + + return NRF_SUCCESS; +} uint32_t ble_advertising_start(ble_advertising_t * const p_advertising, ble_adv_mode_t advertising_mode) @@ -644,18 +657,20 @@ uint32_t ble_advertising_start(ble_advertising_t * const p_advertising, if (p_advertising->adv_mode_current != BLE_ADV_MODE_IDLE) { - ret = sd_ble_gap_adv_set_configure(&p_advertising->adv_handle, p_advertising->p_adv_data, &p_advertising->adv_params); if (ret != NRF_SUCCESS) { return ret; } - ret = sd_ble_gap_adv_start(p_advertising->adv_handle, p_advertising->conn_cfg_tag); - - if (ret != NRF_SUCCESS) - { - return ret; - } + // add lmx 20190606 + if(BLE_ADVERTISING_FLAGS_ENABLE == p_advertising->flags) + { + ret = sd_ble_gap_adv_start(p_advertising->adv_handle, p_advertising->conn_cfg_tag); + if (ret != NRF_SUCCESS) + { + return ret; + } + } } if (p_advertising->evt_handler != NULL) diff --git a/components/ble/ble_advertising/ble_advertising.h b/components/ble/ble_advertising/ble_advertising.h index 8840821..96ef6f2 100644 --- a/components/ble/ble_advertising/ble_advertising.h +++ b/components/ble/ble_advertising/ble_advertising.h @@ -141,6 +141,13 @@ typedef void (*ble_adv_evt_handler_t) (ble_adv_evt_t const adv_evt); /**@brief BLE advertising error handler type. */ typedef void (*ble_adv_error_handler_t) (uint32_t nrf_error); +// add lmx 20190606 +typedef enum +{ + BLE_ADVERTISING_FLAGS_ENABLE, // 表示可以启用广播 + BLE_ADVERTISING_FLAGS_DISABLE, // 表示禁止启用广播 +}ble_advertising_flags_t; + typedef struct { bool initialized; @@ -166,6 +173,7 @@ typedef struct bool whitelist_temporarily_disabled; /**< Flag to keep track of temporary disabling of the whitelist. */ bool whitelist_reply_expected; /**< Flag to verify that the whitelist is only set when requested. */ bool whitelist_in_use; /**< This module needs to be aware of whether or not a whitelist has been set (e.g. using the Peer Manager) in order to start advertising with the proper advertising params (filter policy). */ + ble_advertising_flags_t flags; // add lmx 20190606 } ble_advertising_t; typedef struct @@ -257,6 +265,9 @@ void ble_advertising_conn_cfg_tag_set(ble_advertising_t * const p_advertising, u uint32_t ble_advertising_start(ble_advertising_t * const p_advertising, ble_adv_mode_t advertising_mode); +// add lmx 20190606 设置标志位 +uint32_t ble_advertising_set_flag(ble_advertising_t * const p_advertising, ble_advertising_flags_t flags); + /**@brief Function for setting the peer address. * -- 2.21.0.windows.1 应用启动蓝牙并等待连接 // 启动蓝牙并等待连接 int8_t bluetooth_start(void) { uint32_t err_code = 0; if(BLE_ADV_EVT_IDLE != ble_adv_event) { NRF_LOG_ERROR("ble_adv_event != BLE_ADV_EVT_IDLE..."); NRF_LOG_FLUSH(); return -2; } ble_advertising_set_flag(&m_advertising, BLE_ADVERTISING_FLAGS_ENABLE); err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST); APP_ERROR_CHECK(err_code); return 0; }停止蓝牙广播并断开连接 // 停止蓝牙广播并断开连接 int8_t bluetooth_stop(void) { uint32_t err_code; if(BLE_ADV_EVT_FAST != ble_adv_event) { return -2; } ble_advertising_set_flag(&m_advertising, BLE_ADVERTISING_FLAGS_DISABLE); if(m_conn_handle != BLE_CONN_HANDLE_INVALID) { err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE); APP_ERROR_CHECK(err_code); // 这里建议增加超时机制, 不宜死循环一直等待 while (m_conn_handle != BLE_CONN_HANDLE_INVALID) { NRF_LOG_INFO("wait disconnect..."); NRF_LOG_FLUSH(); nrf_delay_ms(10); } } sd_ble_gap_adv_stop(m_advertising.adv_handle); err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_IDLE); APP_ERROR_CHECK(err_code); return 0; } 注意这里省略了初始化部分，提供启动和停止两个函数的实现意在表明使用方法，具体可参考 SDK 示例代码。 |
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