/** * Copyright (c) 2014 - 2020, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "bsp_btn_ble.h" #include "nrf_sdh_ble.h" #include "bsp.h" #define BTN_ID_WAKEUP 0 /**< ID of button used to wake up the application. */ #define BTN_ID_SLEEP 0 /**< ID of button used to put the application into sleep mode. */ #define BTN_ID_DISCONNECT 0 /**< ID of button used to gracefully terminate a connection on long press. */ #define BTN_ID_WAKEUP_BOND_DELETE 1 /**< ID of button used to wake up the application and delete all bonding information. */ #define BTN_ID_WHITELIST_OFF 1 /**< ID of button used to turn off usage of the whitelist. */ #define BTN_ACTION_SLEEP BSP_BUTTON_ACTION_RELEASE /**< Button action used to put the application into sleep mode. */ #define BTN_ACTION_DISCONNECT BSP_BUTTON_ACTION_LONG_PUSH /**< Button action used to gracefully terminate a connection on long press. */ #define BTN_ACTION_WHITELIST_OFF BSP_BUTTON_ACTION_LONG_PUSH /**< Button action used to turn off usage of the whitelist. */ /**@brief This macro will return from the current function if err_code * is not NRF_SUCCESS or NRF_ERROR_INVALID_PARAM. */ #define RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code) \ do \ { \ if (((err_code) != NRF_SUCCESS) && ((err_code) != NRF_ERROR_INVALID_PARAM)) \ { \ return err_code; \ } \ } \ while (0) /**@brief This macro will return from the current function if err_code * is not NRF_SUCCESS or NRF_ERROR_NOT_SUPPORTED. */ #define RETURN_ON_ERROR_NOT_NOT_SUPPORTED(err_code) \ do \ { \ if (((err_code) != NRF_SUCCESS) && ((err_code) != NRF_ERROR_NOT_SUPPORTED)) \ { \ return err_code; \ } \ } \ while (0) /**@brief This macro will call the registered error handler if err_code * is not NRF_SUCCESS and the error handler is not NULL. */ #define CALL_HANDLER_ON_ERROR(err_code) \ do \ { \ if (((err_code) != NRF_SUCCESS) && (m_error_handler != NULL)) \ { \ m_error_handler(err_code); \ } \ } \ while (0) static bsp_btn_ble_error_handler_t m_error_handler = NULL; /**< Error handler registered by the user. */ static uint32_t m_num_connections = 0; /**< Number of connections the device is currently in. */ /**@brief Function for configuring the buttons for connection. * * @retval NRF_SUCCESS Configured successfully. * @return A propagated error code. */ static uint32_t connection_buttons_configure() { uint32_t err_code; err_code = bsp_event_to_button_action_assign(BTN_ID_SLEEP, BTN_ACTION_SLEEP, BSP_EVENT_DEFAULT); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); err_code = bsp_event_to_button_action_assign(BTN_ID_WHITELIST_OFF, BTN_ACTION_WHITELIST_OFF, BSP_EVENT_WHITELIST_OFF); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); err_code = bsp_event_to_button_action_assign(BTN_ID_DISCONNECT, BTN_ACTION_DISCONNECT, BSP_EVENT_DISCONNECT); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); return NRF_SUCCESS; } /**@brief Function for configuring the buttons for advertisement. * * @retval NRF_SUCCESS Configured successfully. * @return A propagated error code. */ static uint32_t advertising_buttons_configure() { uint32_t err_code; err_code = bsp_event_to_button_action_assign(BTN_ID_DISCONNECT, BTN_ACTION_DISCONNECT, BSP_EVENT_DEFAULT); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); err_code = bsp_event_to_button_action_assign(BTN_ID_WHITELIST_OFF, BTN_ACTION_WHITELIST_OFF, BSP_EVENT_WHITELIST_OFF); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); err_code = bsp_event_to_button_action_assign(BTN_ID_SLEEP, BTN_ACTION_SLEEP, BSP_EVENT_SLEEP); RETURN_ON_ERROR_NOT_INVALID_PARAM(err_code); return NRF_SUCCESS; } /**@brief Function for extracting the BSP event valid at startup. * * @details When a button was used to wake up the device, the button press will not generate an * interrupt. This function reads which button was pressed at startup, and returns the * appropriate BSP event. * * @param[out] p_startup_event Where to put the extracted BSP event. */ static void startup_event_extract(bsp_event_t * p_startup_event) { // React to button states if (bsp_button_is_pressed(BTN_ID_WAKEUP_BOND_DELETE)) { *p_startup_event = BSP_EVENT_CLEAR_BONDING_DATA; } else if (bsp_button_is_pressed(BTN_ID_WAKEUP)) { *p_startup_event = BSP_EVENT_WAKEUP; } else { *p_startup_event = BSP_EVENT_NOTHING; } } uint32_t bsp_btn_ble_sleep_mode_prepare(void) { uint32_t err_code; err_code = bsp_wakeup_button_enable(BTN_ID_WAKEUP); RETURN_ON_ERROR_NOT_NOT_SUPPORTED(err_code); err_code = bsp_wakeup_button_enable(BTN_ID_WAKEUP_BOND_DELETE); RETURN_ON_ERROR_NOT_NOT_SUPPORTED(err_code); return NRF_SUCCESS; } /** * @brief Function for handling BLE events. * * @param[in] p_ble_evt Event received from the BLE stack. * @param[in] p_context Context. */ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context) { uint32_t err_code; switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: if (m_num_connections == 0) { err_code = connection_buttons_configure(); CALL_HANDLER_ON_ERROR(err_code); } m_num_connections++; break; case BLE_GAP_EVT_DISCONNECTED: m_num_connections--; if (m_num_connections == 0) { err_code = advertising_buttons_configure(); CALL_HANDLER_ON_ERROR(err_code); } break; default: break; } } NRF_SDH_BLE_OBSERVER(m_ble_observer, BSP_BTN_BLE_OBSERVER_PRIO, ble_evt_handler, NULL); uint32_t bsp_btn_ble_init(bsp_btn_ble_error_handler_t error_handler, bsp_event_t * p_startup_bsp_evt) { uint32_t err_code = NRF_SUCCESS; m_error_handler = error_handler; if (p_startup_bsp_evt != NULL) { startup_event_extract(p_startup_bsp_evt); } if (m_num_connections == 0) { err_code = advertising_buttons_configure(); } return err_code; }