/** * This file is part of license combination gpl version 3 license and eCos. * The corresponding license terms are below. * * gpl version 3 Licence: * * The file were developed during the student thesis "Datensammlung in Wireless * Sensor Networks fuer Autonomic Home NetworkingÒ of Thomas Kothmayr and is * included in the dissertation "Secure Data Transmission in Wireless * Sensor Networks" by Corinna Schmitt during employment at the Technische * UniversitŠt MŸnchen, Department Computer Science, Chair Network * Architectures and Services (Germany). * Copyright (C) 2013 * Authors: Thomas Kothmayr and Corinna Schmitt (schmitt[at]net.in.tum.de) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, version 3 of the License * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . * * * eCos Licence: (http://ecos.sourceware.org) * * This file is part of eCos, the Embedded Configurable Operating System. * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, * 2007, 2008, 2009 Free Software Foundation, Inc. * * eCos is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free * Software Foundation; either version 3 any later version. * * eCos is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with eCos; if not, write to the Free Software Foundation, Inc., 51 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * As a special exception, if other files instantiate templates or use * macros or inline functions from this file, or you compile this file and * link it with other works to produce a work based on this file, this file * does not by itself cause the resulting work to be covered by the GNU * General Public License. However the source code for this file must still * be made available in accordance with section (3) of the GNU General * Public License v2. * * This exception does not invalidate any other reasons why a work based on * this file might be covered by the GNU General Public License. * */ Interface: tos.interfaces.Receive

Interface: tos.interfaces.Receive

interface Receive

Author:
Phil Levis
David Gay Revision: $Revision: 1.11 $ Defines global error codes for error_t in TinyOS.

Events
event message_t *receive(message_t *msg, void *payload, uint8_t len) Receive a packet buffer, returning a buffer for the signaling component to use for the next reception.

Events - Details

receive

event message_t *receive(message_t *msg, void *payload, uint8_t len)

Receive a packet buffer, returning a buffer for the signaling component to use for the next reception. The return value can be the same as msg, as long as the handling component copies out the data it needs. Note that misuse of this interface is one of the most common bugs in TinyOS code. For example, if a component both calls a send on the passed message and returns it, then it is possible the buffer will be reused before the send occurs, overwriting the component's data. This would cause the mote to possibly instead send a packet it most recently received.

Parameters:
'message_t* ONE msg' the receied packet
'void* COUNT(len) payload' a pointer to the packet's payload
len - the length of the data region pointed to by payload
Returns:
'message_t* ONE' a packet buffer for the stack to use for the next received packet.