nes-proj/arch/cpu/cc13xx-cc26xx/rf/ieee-addr.c
Edvard Pettersen 7cf843f601 Uncrustify
2018-08-31 11:05:32 +02:00

112 lines
4.2 KiB
C

/*
* Copyright (c) 2018, Texas Instruments Incorporated - http://www.ti.com/
* 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 the copyright holder nor the names of its
* contributors 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.
*/
/**
* \addtogroup cc13xx-cc26xx-rf-ieee-addr
* @{
*
* \file
* Implementation of the CC13xx/CC26xx IEEE addresses driver.
* \author
* Edvard Pettersen <e.pettersen@ti.com>
*/
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "net/linkaddr.h"
#include "rf/ieee-addr.h"
/*---------------------------------------------------------------------------*/
#include <ti/devices/DeviceFamily.h>
#include DeviceFamily_constructPath(inc/hw_memmap.h)
#include DeviceFamily_constructPath(inc/hw_fcfg1.h)
#include DeviceFamily_constructPath(inc/hw_ccfg.h)
/*---------------------------------------------------------------------------*/
#include <stdint.h>
#include <string.h>
/*---------------------------------------------------------------------------*/
#define IEEE_ADDR_HARDCODED IEEE_ADDR_CONF_HARDCODED
#define IEEE_ADDR_ADDRESS IEEE_ADDR_CONF_ADDRESS
/*---------------------------------------------------------------------------*/
#define IEEE_MAC_PRIMARY_ADDRESS (FCFG1_BASE + FCFG1_O_MAC_15_4_0)
#define IEEE_MAC_SECONDARY_ADDRESS (CCFG_BASE + CCFG_O_IEEE_MAC_0)
/*---------------------------------------------------------------------------*/
int
ieee_addr_cpy_to(uint8_t *dst, uint8_t len)
{
if(len > LINKADDR_SIZE) {
return -1;
}
if(IEEE_ADDR_HARDCODED) {
const uint8_t ieee_addr_hc[LINKADDR_SIZE] = IEEE_ADDR_ADDRESS;
memcpy(dst, &ieee_addr_hc[LINKADDR_SIZE - len], len);
} else {
int i;
volatile const uint8_t *const primary = (uint8_t *)IEEE_MAC_PRIMARY_ADDRESS;
volatile const uint8_t *const secondary = (uint8_t *)IEEE_MAC_SECONDARY_ADDRESS;
/* Reading from primary location... */
volatile const uint8_t *ieee_addr = primary;
/*
* ...unless we can find a byte != 0xFF in secondary.
*
* Intentionally checking all 8 bytes here instead of len, because we
* are checking validity of the entire address respective of the
* actual number of bytes the caller wants to copy over.
*/
for(i = 0; i < len; i++) {
if(secondary[i] != 0xFF) {
/* A byte in the secondary location is not 0xFF. Use the secondary */
ieee_addr = secondary;
break;
}
}
/*
* We have chosen what address to read the address from. Do so,
* in inverted byte order.
*/
for(i = 0; i < len; i++) {
dst[i] = ieee_addr[len - 1 - i];
}
}
#ifdef IEEE_ADDR_NODE_ID
dst[len - 1] = (IEEE_ADDR_NODE_ID >> 0) & 0xFF;
dst[len - 2] = (IEEE_ADDR_NODE_ID >> 8) & 0xFF;
#endif
return 0;
}
/*---------------------------------------------------------------------------*/
/** @} */