cc2420-arch.c

/*
 * Copyright (c) 2009, University of Colombo School of Computing
 * 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.
 *
 * This file is part of the Contiki operating system.
 *
 * @(#)$$
 */


#include <avr/io.h>

#include "contiki.h"
#include "contiki-net.h"

#include "dev/spi.h"
#include "dev/cc2420.h"
#include "dev/leds.h"

void
cc2420_arch_init(void)
{
  SFIOR |= BV(PUD);             /* Beware, disable all pull-ups. */

  spi_init();

  DDRA |= BV(CC2420_RESET_PIN);
  DDRA |= BV(CC2420_VREG_PIN);
  DDRB &= ~BV(CC2420_FIFO_PIN);
  DDRD &= ~BV(CC2420_CCA_PIN);
  DDRD &= ~BV(CC2420_SFD_PIN);
  DDRE &= ~BV(CC2420_FIFOP_PIN);

  PORTA |= BV(CC2420_RESET_PIN);
  PORTB |= BV(CC2420_CSN_PIN);

  CC2420_SPI_DISABLE();                /* Unselect radio. */
}

ISR(CC2420_IRQ_VECTOR)
{
  /* TODO : wakeup from sleep mode */
  cc2420_interrupt();

}