Contiki 2.6

nullrdc-noframer.c

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00001 /*
00002  * Copyright (c) 2007, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * $Id: nullrdc-noframer.c,v 1.1 2010/11/23 18:11:00 nifi Exp $
00032  */
00033 
00034 /**
00035  * \file
00036  *         A MAC protocol that does not do anything.
00037  * \author
00038  *         Adam Dunkels <adam@sics.se>
00039  */
00040 
00041 #include "net/mac/nullrdc-noframer.h"
00042 #include "net/packetbuf.h"
00043 #include "net/queuebuf.h"
00044 #include "net/netstack.h"
00045 #include <string.h>
00046 
00047 /*---------------------------------------------------------------------------*/
00048 static void
00049 send_packet(mac_callback_t sent, void *ptr)
00050 {
00051   int ret;
00052   if(NETSTACK_RADIO.send(packetbuf_hdrptr(), packetbuf_totlen()) == RADIO_TX_OK) {
00053     ret = MAC_TX_OK;
00054   } else {
00055     ret =  MAC_TX_ERR;
00056   }
00057   mac_call_sent_callback(sent, ptr, ret, 1);
00058 }
00059 /*---------------------------------------------------------------------------*/
00060 static void
00061 send_list(mac_callback_t sent, void *ptr, struct rdc_buf_list *buf_list)
00062 {
00063   if(buf_list != NULL) {
00064     queuebuf_to_packetbuf(buf_list->buf);
00065     send_packet(sent, ptr);
00066   }
00067 }
00068 /*---------------------------------------------------------------------------*/
00069 static void
00070 packet_input(void)
00071 {
00072   NETSTACK_MAC.input();
00073 }
00074 /*---------------------------------------------------------------------------*/
00075 static int
00076 on(void)
00077 {
00078   return NETSTACK_RADIO.on();
00079 }
00080 /*---------------------------------------------------------------------------*/
00081 static int
00082 off(int keep_radio_on)
00083 {
00084   if(keep_radio_on) {
00085     return NETSTACK_RADIO.on();
00086   } else {
00087     return NETSTACK_RADIO.off();
00088   }
00089 }
00090 /*---------------------------------------------------------------------------*/
00091 static unsigned short
00092 channel_check_interval(void)
00093 {
00094   return 0;
00095 }
00096 /*---------------------------------------------------------------------------*/
00097 static void
00098 init(void)
00099 {
00100   on();
00101 }
00102 /*---------------------------------------------------------------------------*/
00103 const struct rdc_driver nullrdc_noframer_driver = {
00104   "nullrdc-noframer",
00105   init,
00106   send_packet,
00107   send_list,
00108   packet_input,
00109   on,
00110   off,
00111   channel_check_interval,
00112 };
00113 /*---------------------------------------------------------------------------*/