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