nrf51822 --- 从机主动断开蓝牙连接

1.目的

   从机主动断开蓝牙连接

2.分析

  实际应用当中，时常需要需从机主动断开蓝牙，防止不明主机连接的情况

3.平台：

协议栈版本：SDK10.0.0

编译软件：keil 5.14

硬件平台：nrf51822最小系统

例子：SDK 10.0.0\examples\ble_peripheral\ble_app_uart\pca10028\s110\arm4

4.步骤

首先，要知道主动断开连接的API ：

/**@brief Disconnect (GAP Link Termination).
 *
 * @details This call initiates the disconnection procedure, and its completion will be communicated to the application
 *          with a @ref BLE_GAP_EVT_DISCONNECTED event.
 *
 * @param[in] conn_handle Connection handle.
 * @param[in] hci_status_code HCI status code, see @ref BLE_HCI_STATUS_CODES (accepted values are @ref BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION and @ref BLE_HCI_CONN_INTERVAL_UNACCEPTABLE).
 *
 * @retval ::NRF_SUCCESS The disconnection procedure has been started successfully.
 * @retval ::NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied.
 * @retval ::BLE_ERROR_INVALID_CONN_HANDLE Invalid connection handle supplied.
 * @retval ::NRF_ERROR_INVALID_STATE Invalid state to perform operation (disconnection is already in progress).
 */
SVCALL(SD_BLE_GAP_DISCONNECT, uint32_t, sd_ble_gap_disconnect(uint16_t conn_handle, uint8_t hci_status_code));

｛

     err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
      APP_ERROR_CHECK(err_code);

｝

从机调用这个就可以断开蓝牙。