cpu/msp430/cc2420-arch.c

   1 /*
   2  * Copyright (c) 2006, Swedish Institute of Computer Science
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the Institute nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)$Id: cc2420-arch.c,v 1.7 2010/01/19 20:35:41 adamdunkels Exp $
  30  */
  31
  32 #include <io.h>
  33 #include <signal.h>
  34
  35 #include "contiki.h"
  36 #include "contiki-net.h"
  37
  38 #include "dev/spi.h"
  39 #include "dev/cc2420.h"
  40
  41 #define CONF_SFD_TIMESTAMPS 0
  42
  43 #ifdef CONF_SFD_TIMESTAMPS
  44 #include "cc2420-arch-sfd.h"
  45 #endif
  46
  47 /*---------------------------------------------------------------------------*/
  48 interrupt(PORT1_VECTOR)
  49 cc24240_port1_interrupt(void)
  50 {
  51   ENERGEST_ON(ENERGEST_TYPE_IRQ);
  52   if(cc2420_interrupt()) {
  53     LPM4_EXIT;
  54   }
  55   ENERGEST_OFF(ENERGEST_TYPE_IRQ);
  56 }
  57
  58 /*---------------------------------------------------------------------------*/
  59 void
  60 cc2420_arch_init(void)
  61 {
  62   spi_init();
  63
  64   /* all input by default, set these as output */
  65   P4DIR |= BV(CSN) | BV(VREG_EN) | BV(RESET_N);
  66
  67 #if CONF_SFD_TIMESTAMPS
  68   cc2420_arch_sfd_init();
  69 #endif
  70
  71   SPI_DISABLE();                /* Unselect radio. */
  72 }
  73 /*---------------------------------------------------------------------------*/