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source/nordic_sdk/components/softdevice/common/softdevice_handler/softdevice_handler.c
- Committer:
- Jonathan Austin
- Date:
- 2016-04-06
- Revision:
- 0:bc2961fa1ef0
File content as of revision 0:bc2961fa1ef0:
/* * Copyright (c) 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 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 other * contributors to this software may be used to endorse or promote products * derived from this software without specific prior written permission. * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "softdevice_handler.h" #include <stdlib.h> #include "nordic_common.h" #include "app_error.h" #include "app_util.h" #include "nrf_assert.h" #include "nrf_soc.h" #include "nrf.h" #if defined(ANT_STACK_SUPPORT_REQD) && defined(BLE_STACK_SUPPORT_REQD) #include "ant_interface.h" #elif defined(ANT_STACK_SUPPORT_REQD) #include "ant_interface.h" #elif defined(BLE_STACK_SUPPORT_REQD) #include "ble.h" #endif #ifdef NRF51 #define SOFTDEVICE_EVT_IRQ SD_EVT_IRQn /**< SoftDevice Event IRQ number. Used for both protocol events and SoC events. */ #define SOFTDEVICE_EVT_IRQHandler SD_EVT_IRQHandler #elif defined (NRF52) #define SOFTDEVICE_EVT_IRQ SWI2_EGU2_IRQn #define SOFTDEVICE_EVT_IRQHandler SWI2_EGU2_IRQHandler #endif /* NRF51 */ static softdevice_evt_schedule_func_t m_evt_schedule_func; /**< Pointer to function for propagating SoftDevice events to the scheduler. */ static volatile bool m_softdevice_enabled = false; /**< Variable to indicate whether the SoftDevice is enabled. */ #ifdef BLE_STACK_SUPPORT_REQD // The following three definitions is needed only if BLE events are needed to be pulled from the stack. static uint8_t * mp_ble_evt_buffer; /**< Buffer for receiving BLE events from the SoftDevice. */ static uint16_t m_ble_evt_buffer_size; /**< Size of BLE event buffer. */ static ble_evt_handler_t m_ble_evt_handler; /**< Application event handler for handling BLE events. */ #endif #ifdef ANT_STACK_SUPPORT_REQD // The following two definition is needed only if ANT events are needed to be pulled from the stack. static ant_evt_t m_ant_evt_buffer; /**< Buffer for receiving ANT events from the SoftDevice. */ static ant_evt_handler_t m_ant_evt_handler; /**< Application event handler for handling ANT events. */ #endif static sys_evt_handler_t m_sys_evt_handler; /**< Application event handler for handling System (SOC) events. */ /**@brief Callback function for asserts in the SoftDevice. * * @details A pointer to this function will be passed to the SoftDevice. This function will be * called if an ASSERT statement in the SoftDevice fails. * * @param[in] pc The value of the program counter when the ASSERT call failed. * @param[in] line_num Line number of the failing ASSERT call. * @param[in] file_name File name of the failing ASSERT call. */ void softdevice_assertion_handler(uint32_t pc, uint16_t line_num, const uint8_t * file_name) { UNUSED_PARAMETER(pc); assert_nrf_callback(line_num, file_name); } void intern_softdevice_events_execute(void) { if (!m_softdevice_enabled) { // SoftDevice not enabled. This can be possible if the SoftDevice was enabled by the // application without using this module's API (i.e softdevice_handler_init) return; } bool no_more_soc_evts = (m_sys_evt_handler == NULL); #ifdef BLE_STACK_SUPPORT_REQD bool no_more_ble_evts = (m_ble_evt_handler == NULL); #endif #ifdef ANT_STACK_SUPPORT_REQD bool no_more_ant_evts = (m_ant_evt_handler == NULL); #endif for (;;) { uint32_t err_code; if (!no_more_soc_evts) { uint32_t evt_id; // Pull event from SOC. err_code = sd_evt_get(&evt_id); if (err_code == NRF_ERROR_NOT_FOUND) { no_more_soc_evts = true; } else if (err_code != NRF_SUCCESS) { APP_ERROR_HANDLER(err_code); } else { // Call application's SOC event handler. m_sys_evt_handler(evt_id); } } #ifdef BLE_STACK_SUPPORT_REQD // Fetch BLE Events. if (!no_more_ble_evts) { // Pull event from stack uint16_t evt_len = m_ble_evt_buffer_size; err_code = sd_ble_evt_get(mp_ble_evt_buffer, &evt_len); if (err_code == NRF_ERROR_NOT_FOUND) { no_more_ble_evts = true; } else if (err_code != NRF_SUCCESS) { APP_ERROR_HANDLER(err_code); } else { // Call application's BLE stack event handler. m_ble_evt_handler((ble_evt_t *)mp_ble_evt_buffer); } } #endif #ifdef ANT_STACK_SUPPORT_REQD // Fetch ANT Events. if (!no_more_ant_evts) { // Pull event from stack err_code = sd_ant_event_get(&m_ant_evt_buffer.channel, &m_ant_evt_buffer.event, m_ant_evt_buffer.evt_buffer); if (err_code == NRF_ERROR_NOT_FOUND) { no_more_ant_evts = true; } else if (err_code != NRF_SUCCESS) { APP_ERROR_HANDLER(err_code); } else { // Call application's ANT stack event handler. m_ant_evt_handler(&m_ant_evt_buffer); } } #endif if (no_more_soc_evts) { // There are no remaining System (SOC) events to be fetched from the SoftDevice. #if defined(ANT_STACK_SUPPORT_REQD) && defined(BLE_STACK_SUPPORT_REQD) // Check if there are any remaining BLE and ANT events. if (no_more_ble_evts && no_more_ant_evts) { break; } #elif defined(BLE_STACK_SUPPORT_REQD) // Check if there are any remaining BLE events. if (no_more_ble_evts) { break; } #elif defined(ANT_STACK_SUPPORT_REQD) // Check if there are any remaining ANT events. if (no_more_ant_evts) { break; } #else // No need to check for BLE or ANT events since there is no support for BLE and ANT // required. break; #endif } } } bool softdevice_handler_isEnabled(void) { return m_softdevice_enabled; } uint32_t softdevice_handler_init(nrf_clock_lfclksrc_t clock_source, void * p_ble_evt_buffer, uint16_t ble_evt_buffer_size, softdevice_evt_schedule_func_t evt_schedule_func) { uint32_t err_code; // Save configuration. #if defined (BLE_STACK_SUPPORT_REQD) // Check that buffer is not NULL. if (p_ble_evt_buffer == NULL) { return NRF_ERROR_INVALID_PARAM; } // Check that buffer is correctly aligned. if (!is_word_aligned(p_ble_evt_buffer)) { return NRF_ERROR_INVALID_PARAM; } mp_ble_evt_buffer = (uint8_t *)p_ble_evt_buffer; m_ble_evt_buffer_size = ble_evt_buffer_size; #else // The variables p_ble_evt_buffer and ble_evt_buffer_size is not needed if BLE Stack support // is not required. UNUSED_PARAMETER(p_ble_evt_buffer); UNUSED_PARAMETER(ble_evt_buffer_size); #endif m_evt_schedule_func = evt_schedule_func; //Enabling FPU for SoftDevice #ifdef S132 SCB->CPACR |= (3UL << 20) | (3UL << 22); __DSB(); __ISB(); #endif // Initialize SoftDevice. err_code = sd_softdevice_enable(clock_source, softdevice_assertion_handler); if (err_code != NRF_SUCCESS) { return err_code; } #ifdef S132 SCB->CPACR = 0; __DSB(); __ISB(); #endif m_softdevice_enabled = true; // Enable BLE event interrupt (interrupt priority has already been set by the stack). return sd_nvic_EnableIRQ(SOFTDEVICE_EVT_IRQ); } uint32_t softdevice_handler_sd_disable(void) { uint32_t err_code = sd_softdevice_disable(); m_softdevice_enabled = !(err_code == NRF_SUCCESS); return err_code; } #ifdef BLE_STACK_SUPPORT_REQD uint32_t softdevice_ble_evt_handler_set(ble_evt_handler_t ble_evt_handler) { if (ble_evt_handler == NULL) { return NRF_ERROR_NULL; } m_ble_evt_handler = ble_evt_handler; return NRF_SUCCESS; } #endif #ifdef ANT_STACK_SUPPORT_REQD uint32_t softdevice_ant_evt_handler_set(ant_evt_handler_t ant_evt_handler) { if (ant_evt_handler == NULL) { return NRF_ERROR_NULL; } m_ant_evt_handler = ant_evt_handler; return NRF_SUCCESS; } #endif uint32_t softdevice_sys_evt_handler_set(sys_evt_handler_t sys_evt_handler) { if (sys_evt_handler == NULL) { return NRF_ERROR_NULL; } m_sys_evt_handler = sys_evt_handler; return NRF_SUCCESS; } /**@brief Function for handling the Application's BLE Stack events interrupt. * * @details This function is called whenever an event is ready to be pulled. */ void SOFTDEVICE_EVT_IRQHandler(void) { if (m_evt_schedule_func != NULL) { uint32_t err_code = m_evt_schedule_func(); APP_ERROR_CHECK(err_code); } else { intern_softdevice_events_execute(); } }