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128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/*
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* Copyright (C) 2013 INRIA.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup net_ieee802154 IEEE802.15.4
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* @ingroup net
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* @brief IEEE802.15.4 adapaption layer
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* @{
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*
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* @file
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* @brief IEEE 802.14.4 framing data structs and prototypes
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*
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* @author Stephan Zeisberg <zeisberg@mi.fu-berlin.de>
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* @author Oliver Hahm <oliver.hahm@inria.fr>
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*/
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#ifndef IEEE802154_IEEE802154_FRAME
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#define IEEE802154_IEEE802154_FRAME
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#include <stdio.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* maximum 802.15.4 header length */
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#define IEEE_802154_MAX_HDR_LEN (23)
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/* ...and FCS*/
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#define IEEE_802154_FCS_LEN (2)
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typedef enum __attribute__((packed)) {
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IEEE_802154_BEACON_FRAME = 0,
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IEEE_802154_DATA_FRAME = 1,
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IEEE_802154_ACK_FRAME = 2,
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IEEE_802154_MAC_CMD_FRAME = 3
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} ieee802154_frame_type_t;
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#define IEEE_802154_SHORT_ADDR_M (2)
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#define IEEE_802154_LONG_ADDR_M (3)
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#define IEEE_802154_SHORT_MCAST_ADDR (0xffff)
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#define IEEE_802154_LONG_MCAST_ADDR {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
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0xff, 0xff}}
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/**
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* @brief The default PAN id to use if not specified otherwise by upper layers
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*/
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#define IEEE_802154_DEFAULT_PAN_ID (1)
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/**
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* @brief Transform 16-bit number from network order (big-endian) to
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* little-endian byte order (as used by IEEE 802.15.4).
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*/
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#define NTOLES(a) (((a) >> 8) | (((a) & 0x00ff) << 8))
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/**
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* @brief Transform 16-bit number from little-endian byte order to network
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* order (big-endian).
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*/
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#define LETONS(a) NTOLES(a)
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/**
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* @brief Transform 16-bit number from host byte order to little-endian byte
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* order (as used by IEEE 802.15.4).
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*/
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#define HTOLES(a) a
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/**
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* @brief Transform 16-bit number from little-endian byte order to host byte
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* order.
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*/
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#define LETOHS(a) HTOLES(a)
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typedef struct __attribute__((packed)) {
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ieee802154_frame_type_t frame_type;
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uint8_t sec_enb;
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uint8_t frame_pend;
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uint8_t ack_req;
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uint8_t panid_comp;
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uint8_t dest_addr_m;
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uint8_t frame_ver;
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uint8_t src_addr_m;
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} ieee802154_frame_fcf_frame_t;
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typedef struct __attribute__((packed)) {
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ieee802154_frame_fcf_frame_t fcf;
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uint8_t seq_nr;
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uint16_t dest_pan_id;
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uint8_t dest_addr[8];
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uint16_t src_pan_id;
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uint8_t src_addr[8];
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uint8_t *payload;
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uint8_t payload_len;
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} ieee802154_frame_t;
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/**
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* Structure to represent an IEEE 802.15.4 packet for the transceiver.
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*/
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typedef struct __attribute__(( packed )) {
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/* @{ */
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uint8_t processing; /** < internal processing state */
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uint8_t length; /** < the length of the frame of the frame including fcs*/
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ieee802154_frame_t frame; /** < the ieee802154 frame */
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int8_t rssi; /** < the rssi value */
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uint8_t crc; /** < 1 if crc was successfull, 0 otherwise */
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uint8_t lqi; /** < the link quality indicator */
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/* @} */
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} ieee802154_packet_t;
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uint8_t ieee802154_frame_init(ieee802154_frame_t *frame, uint8_t *buf);
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uint8_t ieee802154_frame_get_hdr_len(ieee802154_frame_t *frame);
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uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame, uint8_t len);
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void ieee802154_frame_print_fcf_frame(ieee802154_frame_t *frame);
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uint16_t ieee802154_frame_get_fcs(const uint8_t *frame, uint8_t frame_len);
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* IEEE802154_IEEE802154_FRAME */
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