2020-10-23 12:46:10 +02:00
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/*
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2021-01-25 15:05:07 +01:00
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* Copyright (c) 2017 - 2021, Nordic Semiconductor ASA
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2020-10-23 12:46:10 +02:00
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* All rights reserved.
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*
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2021-01-25 15:05:07 +01:00
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* SPDX-License-Identifier: BSD-3-Clause
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*
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2020-10-23 12:46:10 +02:00
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* Redistribution and use in source and binary forms, with or without
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* modification, 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 must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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2021-01-25 15:05:07 +01:00
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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2020-10-23 12:46:10 +02:00
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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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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2021-01-25 15:05:07 +01:00
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*
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2020-10-23 12:46:10 +02:00
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*/
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/**
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* @file
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* This file implements notifications triggered by the nrf 802.15.4 radio driver via SWI.
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*
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*/
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#include "nrf_802154_notification.h"
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#include <assert.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "nrf_802154.h"
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#include "nrf_802154_config.h"
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#include "nrf_802154_peripherals.h"
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#include "nrf_802154_queue.h"
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#include "nrf_802154_swi.h"
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#include "nrf_802154_utils.h"
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#include "hal/nrf_egu.h"
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/** Size of notification queue.
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*
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* One slot for each receive buffer, one for transmission, one for busy channel and one for energy
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* detection.
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*
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* One slot is lost due to simplified queue implementation.
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*/
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#define NTF_QUEUE_SIZE ((NRF_802154_RX_BUFFERS + 3) + 1)
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#define NTF_INT NRF_EGU_INT_TRIGGERED0 ///< Label of notification interrupt.
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#define NTF_TASK NRF_EGU_TASK_TRIGGER0 ///< Label of notification task.
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#define NTF_EVENT NRF_EGU_EVENT_TRIGGERED0 ///< Label of notification event.
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/// Types of notifications in notification queue.
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typedef enum
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{
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NTF_TYPE_RECEIVED, ///< Frame received
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NTF_TYPE_RECEIVE_FAILED, ///< Frame reception failed
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NTF_TYPE_TRANSMITTED, ///< Frame transmitted
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NTF_TYPE_TRANSMIT_FAILED, ///< Frame transmission failure
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NTF_TYPE_ENERGY_DETECTED, ///< Energy detection procedure ended
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NTF_TYPE_ENERGY_DETECTION_FAILED, ///< Energy detection procedure failed
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NTF_TYPE_CCA, ///< CCA procedure ended
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NTF_TYPE_CCA_FAILED, ///< CCA procedure failed
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} nrf_802154_ntf_type_t;
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/// Notification data in the notification queue.
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typedef struct
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{
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nrf_802154_ntf_type_t type; ///< Notification type.
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union
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{
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struct
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{
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uint8_t * p_data; ///< Pointer to a buffer containing PHR and PSDU of the received frame.
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int8_t power; ///< RSSI of received frame.
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uint8_t lqi; ///< LQI of received frame.
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} received; ///< Received frame details.
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struct
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{
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nrf_802154_rx_error_t error; ///< An error code that indicates reason of the failure.
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} receive_failed;
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struct
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{
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const uint8_t * p_frame; ///< Pointer to frame that was transmitted.
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uint8_t * p_ack; ///< Pointer to a buffer containing PHR and PSDU of the received ACK or NULL.
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int8_t power; ///< RSSI of received ACK or 0.
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uint8_t lqi; ///< LQI of received ACK or 0.
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} transmitted; ///< Transmitted frame details.
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struct
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{
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const uint8_t * p_frame; ///< Pointer to frame that was requested to be transmitted, but failed.
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nrf_802154_tx_error_t error; ///< An error code that indicates reason of the failure.
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} transmit_failed;
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struct
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{
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int8_t result; ///< Energy detection result.
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} energy_detected; ///< Energy detection details.
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struct
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{
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nrf_802154_ed_error_t error; ///< An error code that indicates reason of the failure.
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} energy_detection_failed; ///< Energy detection failure details.
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struct
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{
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bool result; ///< CCA result.
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} cca; ///< CCA details.
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struct
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{
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nrf_802154_cca_error_t error; ///< An error code that indicates reason of the failure.
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} cca_failed; ///< CCA failure details.
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} data; ///< Notification data depending on it's type.
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} nrf_802154_ntf_data_t;
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static nrf_802154_queue_t m_notifications_queue;
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static nrf_802154_ntf_data_t m_notifications_queue_memory[NTF_QUEUE_SIZE];
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static volatile nrf_802154_mcu_critical_state_t m_mcu_cs;
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/**
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* Enter notify block.
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*
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* This is a helper function used in all notification functions to atomically
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* find an empty slot in the notification queue and allow atomic slot update.
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*
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* @return Pointer to an empty slot in the notification queue.
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*/
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static nrf_802154_ntf_data_t * ntf_enter(void)
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{
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nrf_802154_mcu_critical_enter(m_mcu_cs);
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assert(!nrf_802154_queue_is_full(&m_notifications_queue));
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return nrf_802154_queue_push_begin(&m_notifications_queue);
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}
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/**
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* Exit notify block.
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*
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* This is a helper function used in all notification functions to end atomic slot update
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* and trigger SWI to process the notification from the slot.
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*/
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static void ntf_exit(void)
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{
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nrf_802154_queue_push_commit(&m_notifications_queue);
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2020-11-12 16:34:05 +01:00
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nrf_egu_task_trigger(NRF_802154_EGU_INSTANCE, NTF_TASK);
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2020-10-23 12:46:10 +02:00
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nrf_802154_mcu_critical_exit(m_mcu_cs);
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}
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/**
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* @brief Notifies the next higher layer that a frame was received.
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*
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* The notification is triggered from the SWI priority level.
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*
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* @param[in] p_data Pointer to a buffer that contains PHR and PSDU of the received frame.
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* @param[in] power RSSI measured during the frame reception.
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* @param[in] lqi LQI that indicates the measured link quality during the frame reception.
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*/
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void swi_notify_received(uint8_t * p_data, int8_t power, uint8_t lqi)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_RECEIVED;
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p_slot->data.received.p_data = p_data;
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p_slot->data.received.power = power;
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p_slot->data.received.lqi = lqi;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that the reception of a frame failed.
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*
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* @param[in] error Error code that indicates reason of the failure.
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*/
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void swi_notify_receive_failed(nrf_802154_rx_error_t error)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_RECEIVE_FAILED;
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p_slot->data.receive_failed.error = error;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that a frame was transmitted
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*
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* The notification is triggered from the SWI priority level.
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*
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* @param[in] p_frame Pointer to a buffer that contains PHR and PSDU of the transmitted frame.
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* @param[in] p_ack Pointer to a buffer that contains PHR and PSDU of ACK frame. NULL if ACK was
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* not requested.
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* @param[in] power RSSI of the received frame, or 0 if ACK was not requested.
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* @param[in] lqi LQI of the received frame, or 0 if ACK was not requested.
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*/
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void swi_notify_transmitted(const uint8_t * p_frame,
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uint8_t * p_ack,
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int8_t power,
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uint8_t lqi)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_TRANSMITTED;
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p_slot->data.transmitted.p_frame = p_frame;
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p_slot->data.transmitted.p_ack = p_ack;
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p_slot->data.transmitted.power = power;
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p_slot->data.transmitted.lqi = lqi;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that a frame was not transmitted from the SWI priority
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* level.
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*
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* @param[in] p_frame Pointer to a buffer that contains PHR and PSDU of the frame that failed
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* the transmission.
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* @param[in] error Reason of the transmission failure.
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*/
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void swi_notify_transmit_failed(const uint8_t * p_frame, nrf_802154_tx_error_t error)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_TRANSMIT_FAILED;
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p_slot->data.transmit_failed.p_frame = p_frame;
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p_slot->data.transmit_failed.error = error;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that the energy detection procedure ended from
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* the SWI priority level.
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*
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* @param[in] result Detected energy level.
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*/
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void swi_notify_energy_detected(uint8_t result)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_ENERGY_DETECTED;
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p_slot->data.energy_detected.result = result;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that the energy detection procedure failed from
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* the SWI priority level.
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*
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* @param[in] error Reason of the energy detection failure.
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*/
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void swi_notify_energy_detection_failed(nrf_802154_ed_error_t error)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_ENERGY_DETECTION_FAILED;
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p_slot->data.energy_detection_failed.error = error;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that the Clear Channel Assessment (CCA) procedure ended.
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*
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* The notification is triggered from the SWI priority level.
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*
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* @param[in] channel_free If a free channel was detected.
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*/
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void swi_notify_cca(bool channel_free)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_CCA;
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p_slot->data.cca.result = channel_free;
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ntf_exit();
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}
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/**
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* @brief Notifies the next higher layer that the Clear Channel Assessment (CCA) procedure failed.
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*
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* The notification is triggered from the SWI priority level.
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*
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* @param[in] error Reason of the CCA failure.
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*/
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void swi_notify_cca_failed(nrf_802154_cca_error_t error)
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{
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nrf_802154_ntf_data_t * p_slot = ntf_enter();
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p_slot->type = NTF_TYPE_CCA_FAILED;
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p_slot->data.cca_failed.error = error;
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ntf_exit();
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}
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void nrf_802154_notification_init(void)
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{
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nrf_802154_queue_init(&m_notifications_queue, m_notifications_queue_memory,
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sizeof(m_notifications_queue_memory),
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sizeof(m_notifications_queue_memory[0]));
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2020-11-12 16:34:05 +01:00
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nrf_egu_int_enable(NRF_802154_EGU_INSTANCE, NTF_INT);
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2020-10-23 12:46:10 +02:00
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nrf_802154_swi_init();
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}
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void nrf_802154_notify_received(uint8_t * p_data, int8_t power, uint8_t lqi)
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{
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swi_notify_received(p_data, power, lqi);
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}
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void nrf_802154_notify_receive_failed(nrf_802154_rx_error_t error)
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{
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swi_notify_receive_failed(error);
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}
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void nrf_802154_notify_transmitted(const uint8_t * p_frame,
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uint8_t * p_ack,
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int8_t power,
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uint8_t lqi)
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{
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swi_notify_transmitted(p_frame, p_ack, power, lqi);
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}
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void nrf_802154_notify_transmit_failed(const uint8_t * p_frame, nrf_802154_tx_error_t error)
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{
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swi_notify_transmit_failed(p_frame, error);
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}
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void nrf_802154_notify_energy_detected(uint8_t result)
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{
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swi_notify_energy_detected(result);
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}
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void nrf_802154_notify_energy_detection_failed(nrf_802154_ed_error_t error)
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{
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swi_notify_energy_detection_failed(error);
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}
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void nrf_802154_notify_cca(bool is_free)
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{
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swi_notify_cca(is_free);
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}
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void nrf_802154_notify_cca_failed(nrf_802154_cca_error_t error)
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{
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swi_notify_cca_failed(error);
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}
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2020-11-12 16:34:05 +01:00
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/**@brief Handles NTF_EVENT on NRF_802154_EGU_INSTANCE */
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2020-10-23 12:46:10 +02:00
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static void irq_handler_ntf_event(void)
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{
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while (!nrf_802154_queue_is_empty(&m_notifications_queue))
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{
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nrf_802154_ntf_data_t * p_slot =
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(nrf_802154_ntf_data_t *)nrf_802154_queue_pop_begin(&m_notifications_queue);
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switch (p_slot->type)
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{
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case NTF_TYPE_RECEIVED:
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#if NRF_802154_USE_RAW_API
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nrf_802154_received_raw(p_slot->data.received.p_data,
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p_slot->data.received.power,
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p_slot->data.received.lqi);
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#else // NRF_802154_USE_RAW_API
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nrf_802154_received(p_slot->data.received.p_data + RAW_PAYLOAD_OFFSET,
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p_slot->data.received.p_data[RAW_LENGTH_OFFSET],
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p_slot->data.received.power,
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p_slot->data.received.lqi);
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#endif
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break;
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case NTF_TYPE_RECEIVE_FAILED:
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nrf_802154_receive_failed(p_slot->data.receive_failed.error);
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break;
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case NTF_TYPE_TRANSMITTED:
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{
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#if NRF_802154_USE_RAW_API
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nrf_802154_transmitted_raw(p_slot->data.transmitted.p_frame,
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p_slot->data.transmitted.p_ack,
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p_slot->data.transmitted.power,
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p_slot->data.transmitted.lqi);
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#else // NRF_802154_USE_RAW_API
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uint8_t * p_ack = NULL;
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uint8_t length = 0;
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if (p_slot->data.transmitted.p_ack != NULL)
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{
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p_ack = p_slot->data.transmitted.p_ack + RAW_PAYLOAD_OFFSET;
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length = p_slot->data.transmitted.p_ack[RAW_LENGTH_OFFSET];
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}
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nrf_802154_transmitted(p_slot->data.transmitted.p_frame + RAW_PAYLOAD_OFFSET,
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p_ack,
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length,
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p_slot->data.transmitted.power,
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p_slot->data.transmitted.lqi);
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#endif
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}
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break;
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case NTF_TYPE_TRANSMIT_FAILED:
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#if NRF_802154_USE_RAW_API
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|
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nrf_802154_transmit_failed(p_slot->data.transmit_failed.p_frame,
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p_slot->data.transmit_failed.error);
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#else // NRF_802154_USE_RAW_API
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nrf_802154_transmit_failed(
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p_slot->data.transmit_failed.p_frame + RAW_PAYLOAD_OFFSET,
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p_slot->data.transmit_failed.error);
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|
#endif
|
|
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break;
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case NTF_TYPE_ENERGY_DETECTED:
|
|
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nrf_802154_energy_detected(p_slot->data.energy_detected.result);
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|
break;
|
|
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|
case NTF_TYPE_ENERGY_DETECTION_FAILED:
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|
|
|
nrf_802154_energy_detection_failed(
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|
|
|
p_slot->data.energy_detection_failed.error);
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|
|
|
break;
|
|
|
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|
|
case NTF_TYPE_CCA:
|
|
|
|
nrf_802154_cca_done(p_slot->data.cca.result);
|
|
|
|
break;
|
|
|
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|
|
case NTF_TYPE_CCA_FAILED:
|
|
|
|
nrf_802154_cca_failed(p_slot->data.cca_failed.error);
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|
|
|
break;
|
|
|
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|
|
default:
|
|
|
|
assert(false);
|
|
|
|
}
|
|
|
|
|
|
|
|
nrf_802154_queue_pop_commit(&m_notifications_queue);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void nrf_802154_notification_swi_irq_handler(void)
|
|
|
|
{
|
2020-11-12 16:34:05 +01:00
|
|
|
if (nrf_egu_event_check(NRF_802154_EGU_INSTANCE, NTF_EVENT))
|
2020-10-23 12:46:10 +02:00
|
|
|
{
|
2020-11-12 16:34:05 +01:00
|
|
|
nrf_egu_event_clear(NRF_802154_EGU_INSTANCE, NTF_EVENT);
|
2020-10-23 12:46:10 +02:00
|
|
|
|
|
|
|
irq_handler_ntf_event();
|
|
|
|
}
|
|
|
|
}
|