90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
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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
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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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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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* 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
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx-ieee-addr
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* @{
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*
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* \file
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* Driver for the CC26xx IEEE addresses
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "net/linkaddr.h"
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#include "ieee-addr.h"
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#include <stdint.h>
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#include <string.h>
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/*---------------------------------------------------------------------------*/
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void
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ieee_addr_cpy_to(uint8_t *dst, uint8_t len)
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{
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if(IEEE_ADDR_CONF_HARDCODED) {
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uint8_t ieee_addr_hc[8] = IEEE_ADDR_CONF_ADDRESS;
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memcpy(dst, &ieee_addr_hc[8 - len], len);
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} else {
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int i;
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/* Reading from primary location... */
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uint8_t *location = (uint8_t *)IEEE_ADDR_LOCATION_PRIMARY;
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/*
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* ...unless we can find a byte != 0xFF in secondary
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*
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* Intentionally checking all 8 bytes here instead of len, because we
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* are checking validity of the entire IEEE address irrespective of the
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* actual number of bytes the caller wants to copy over.
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*/
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for(i = 0; i < 8; i++) {
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if(((uint8_t *)IEEE_ADDR_LOCATION_SECONDARY)[i] != 0xFF) {
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/* A byte in the secondary location is not 0xFF. Use the secondary */
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location = (uint8_t *)IEEE_ADDR_LOCATION_SECONDARY;
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break;
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}
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}
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/*
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* We have chosen what address to read the IEEE address from. Do so,
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* inverting byte order
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*/
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for(i = 0; i < len; i++) {
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dst[i] = location[len - 1 - i];
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}
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}
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#if IEEE_ADDR_NODE_ID
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dst[len - 1] = IEEE_ADDR_NODE_ID & 0xFF;
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dst[len - 2] = IEEE_ADDR_NODE_ID >> 8;
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#endif
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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