/* * Copyright (c) 2007, 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. * * This file is part of the Contiki operating system. * * $Id: nullrdc.c,v 1.3 2010/06/14 19:19:17 adamdunkels Exp $ */ /** * \file * A MAC protocol that does not do anything. * \author * Adam Dunkels <adam@sics.se> */ #include "net/mac/nullrdc.h" #include "net/packetbuf.h" #include "net/netstack.h" /*---------------------------------------------------------------------------*/ static void send_packet(mac_callback_t sent, void *ptr) { int ret; if(NETSTACK_RADIO.send(packetbuf_hdrptr(), packetbuf_totlen()) == RADIO_TX_OK) { ret = MAC_TX_OK; } else { ret = MAC_TX_ERR; } mac_call_sent_callback(sent, ptr, ret, 1); } /*---------------------------------------------------------------------------*/ static void packet_input(void) { NETSTACK_MAC.input(); } /*---------------------------------------------------------------------------*/ static int on(void) { return NETSTACK_RADIO.on(); } /*---------------------------------------------------------------------------*/ static int off(int keep_radio_on) { if(keep_radio_on) { return NETSTACK_RADIO.on(); } else { return NETSTACK_RADIO.off(); } } /*---------------------------------------------------------------------------*/ static unsigned short channel_check_interval(void) { return 0; } /*---------------------------------------------------------------------------*/ static void init(void) { on(); } /*---------------------------------------------------------------------------*/ const struct rdc_driver nullrdc_driver = { "nullrdc", init, send_packet, packet_input, on, off, channel_check_interval, }; /*---------------------------------------------------------------------------*/