nes-proj/cpu/msp430/cc2520-arch.c

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/*
* Copyright (c) 2011, Swedish Institute of Computer Science
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
*/
#include "contiki.h"
#include "contiki-net.h"
#include "dev/spi.h"
#include "dev/cc2520/cc2520.h"
#include "isr_compat.h"
#ifdef CC2520_CONF_SFD_TIMESTAMPS
#define CONF_SFD_TIMESTAMPS CC2520_CONF_SFD_TIMESTAMPS
#endif /* CC2520_CONF_SFD_TIMESTAMPS */
#ifndef CONF_SFD_TIMESTAMPS
#define CONF_SFD_TIMESTAMPS 0
#endif /* CONF_SFD_TIMESTAMPS */
#ifdef CONF_SFD_TIMESTAMPS
#include "cc2520-arch-sfd.h"
#endif
/*---------------------------------------------------------------------------*/
ISR(CC2520_IRQ, cc2520_port1_interrupt)
{
ENERGEST_ON(ENERGEST_TYPE_IRQ);
if(cc2520_interrupt()) {
LPM4_EXIT;
}
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
/*---------------------------------------------------------------------------*/
void
cc2520_arch_init(void)
{
spi_init();
/* all input by default, set these as output */
CC2520_CSN_PORT(DIR) |= BV(CC2520_CSN_PIN);
CC2520_VREG_PORT(DIR) |= BV(CC2520_VREG_PIN);
CC2520_RESET_PORT(DIR) |= BV(CC2520_RESET_PIN);
CC2520_FIFOP_PORT(DIR) &= ~(BV(CC2520_FIFOP_PIN));
CC2520_FIFO_PORT(DIR) &= ~(BV(CC2520_FIFO_PIN));
CC2520_CCA_PORT(DIR) &= ~(BV(CC2520_CCA_PIN));
CC2520_SFD_PORT(DIR) &= ~(BV(CC2520_SFD_PIN));
#if CONF_SFD_TIMESTAMPS
cc2520_arch_sfd_init();
#endif
CC2520_SPI_DISABLE(); /* Unselect radio. */
}
/*---------------------------------------------------------------------------*/