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components/802_15_4/api/RAL/ral_api.h
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components/802_15_4/api/RAL/ral_api.h
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/**
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* Copyright (c) 2016 - 2020 Nordic Semiconductor ASA and Luxoft Global Operations Gmbh.
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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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*
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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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*
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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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#ifndef RAL_API_H_INCLUDED
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#define RAL_API_H_INCLUDED
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#include "ral_api_spec.h"
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#include "sys_time.h"
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#include "phy_common.h"
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#include "phy_pd_data.h"
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#include "mac_common.h"
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#include "mac_mlme_pib.h"
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#include "mac_time.h"
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#include <stdint.h>
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#include <stdbool.h>
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/**@file ral_api.h
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*
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* @defgroup ral_api Radio Abstraction Layer common API
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* @ingroup ral_15_4
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* @{
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*
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* @brief Radio abstraction layer common interface.
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*
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* @details These are requirements for the implementation code:
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*
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* - no frames must be received between new frame indication and
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* a call to ral_data_ind_read.
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*/
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// various constants to use with MAC/PHY header parsing
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#define PHR_POS 0
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#define PHR_SIZE 1
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#define CRC_SIZE 2
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#define MAC_FRAME_CTRL_POS 0
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#define MAC_FRAME_CTRL_SIZE 2
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#define ACK_REQUEST_MASK 0x20
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#define SEQ_NUM_POS (MAC_FRAME_CTRL_POS + MAC_FRAME_CTRL_SIZE)
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#define ACK_PD_BIT_MASK 0x0010
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#define FRAME_TYPE_MASK 0x0007
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#define FRAME_TYPE_BEACON 0x0000
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#define FRAME_TYPE_DATA 0x0001
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#define FRAME_TYPE_ACK 0x0002
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#define FRAME_TYPE_COMMAND 0x0003
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#define FRAME_PENDING_MASK 0x0010
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/**@brief RAL atomic section */
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typedef volatile uint8_t ral_atomic_t;
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// private RAL data
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typedef struct
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{
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volatile uint8_t tx_seq_num;
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volatile bool ack_needed;
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volatile bool waiting_for_ack;
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volatile ral_atomic_t ral_atomic;
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volatile mac_timestamp_t received_frame_timestamp;
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volatile bool spi_transfer;
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volatile bool cca_performing;
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#if defined(AT86RF231)
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volatile int8_t ed_value;
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volatile bool unread_frame; /** This flag is used to deny transmission if incoming frame
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has not been read from radio buffer.
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todo: remove this deny to accelerate data exchange.
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*/
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volatile bool is_promiscuous_mode; /**< Set to true if promiscuous mode is enabled.*/
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#elif (defined(NRF52_SERIES) || defined(NRF52))
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// pointer to free memory for rx DMA
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volatile uint8_t * p_buffer;
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volatile sys_time_t calibr_value;
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volatile uint8_t bcc_part;
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#endif
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} ral_mem_t;
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/**@brief Initializes radio abstraction layer.
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*/
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void ral_init(void);
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/**@brief Resets radio abstraction layer.
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*/
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void ral_reset(void);
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/**@brief Performs synchronous ED measurement.
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*/
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uint8_t ral_ed_perform(void);
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/**@brief Sends request to change radio state.
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*
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* @param state - New radio state. One of...
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*
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* @return PHY_SUCCESS, if state has been successfully achieved;
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* current state, if state cannot be reached.*/
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phy_enum_t ral_state_set(const phy_enum_t state);
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/**@brief Returns current state of radio.
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*/
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phy_enum_t ral_state_get(void);
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/**@brief Puts radio into sleep mode
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*/
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void ral_sleep(void);
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/**@brief Awakes a radio
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*/
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void ral_wakeup(void);
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/**@brief Performs synchronous cca.
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*/
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phy_status_t ral_cca_perform(void);
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/**@brief Sends PHY frame.
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*
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* @param[in] pd_data - full data frame to be send.
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*
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* @details RAL automatically adds header and FCS control bytes
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* to \a pd_data. Caller must reserve 1 byte before \a psdu
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* pointer and may leave last two bytes of payload (i.e. FCS
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* control field) uninitialized.
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*
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* RF chip or RAL code is responsible to receive an ACK frame.
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* After ACK is handled, device should be restored to the TX state.*/
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void ral_data_req(pd_data_req_t * pd_data);
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/**@brief Reads indication frame from radio.
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*
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* @retval Pointer on the structure of a PHY data indication
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* with received frame.
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*/
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pd_data_ind_t * ral_data_ind_read(void);
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/**@brief Enable data flow from radio hardware after it was disabled
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* by ral_data_flow_disable().
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*/
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void ral_data_flow_enable(void);
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/**@brief Disable data flow from radio hardware
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*/
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void ral_data_flow_disable(void);
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/**@brief This function is used to set attribute from MAC or PHY layer
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* without checking of its boundaries.
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*
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* @param id - one of #MAC_SHORT_ADDRESS, #MAC_EXTENDED_ADDRESS, #MAC_PAN_ID
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* and some other values.
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* @param p_value - pointer to new value.
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*/
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void ral_attribute_set(uint8_t id, const void * p_value);
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/**@brief This function is used to get a copy of attribute value stored inside
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* radio module.
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*
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* @param[in] id - one of #PHY_CURRENT_CHANNEL_ID, #PHY_TRANSMIT_POWER_ID or
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* #PHY_CCA_MODE_ID. Other attributes are not supported.
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* @param[out] p_attr_value - pointer to value to get.
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*/
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void ral_attribute_get(uint8_t id, void * p_attr_value);
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/**@brief This function is used to define frame start time by it's size
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* and the timestamp, when RX IRQ has been received.
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*
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* @param irq_time - moment when IRQ has been received.
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* @param frame_size - size of received frame in bytes.
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*
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* @retval MAC timestamp when PHY header has been started to receive.
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*/
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mac_timestamp_t ral_rx_start_time(mac_timestamp_t irq_time, uint8_t frame_size);
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/**@brief This function performs RSSI.
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*
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* @return RSSI sample value.
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*/
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uint8_t ral_rssi_get(void);
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/**@brief This function calculates the adjusted RSSI value using a temperature
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* correction factor.
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*
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* @param[in] rssi - RSSI sample value (as returned by @ref ral_rssi_get).
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* @param[in] temp - Temperature value in °C.
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*
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* @return Temperature-corrected RSSI value.
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*/
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uint8_t ral_rssi_corrected_get(uint8_t rssi, int8_t temp);
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/** @} */
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#endif /* RAL_API_H_INCLUDED */
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