contiki/platform/exp5438/cc2420-arch.c

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/*
* Copyright (c) 2006, 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/cc2420.h"
#include "dev/leds.h"
#include "isr_compat.h"
#ifndef CONF_SFD_TIMESTAMPS
#define CONF_SFD_TIMESTAMPS 0
#endif /* CONF_SFD_TIMESTAMPS */
#ifdef CONF_SFD_TIMESTAMPS
#include "cc2420-arch-sfd.h"
#endif
/*---------------------------------------------------------------------------*/
ISR(CC2420_IRQ, cc24240_fifop_interrupt)
{
ENERGEST_ON(ENERGEST_TYPE_IRQ);
/* check TA0IV - if 4 (CCR2 => FIFOP interrupt ) */
if(P1IV == (2 * (1 + CC2420_FIFOP_PIN))) {
if(cc2420_interrupt()) {
LPM4_EXIT;
}
}
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
/*---------------------------------------------------------------------------*/
void
cc2420_arch_init(void)
{
spi_init();
/* all input by default, set these as output */
CC2420_CSN_PORT(DIR) |= BV(CC2420_CSN_PIN);
CC2420_VREG_PORT(DIR) |= BV(CC2420_VREG_PIN);
CC2420_RESET_PORT(DIR) |= BV(CC2420_RESET_PIN);
#if CONF_SFD_TIMESTAMPS
cc2420_arch_sfd_init();
#endif
/* CC2420_SPI_DISABLE(); /\* Unselect radio. *\/ */
}
/*---------------------------------------------------------------------------*/