A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
/*
|
2010-11-23 18:11:00 +00:00
|
|
|
* Copyright (c) 2010, Swedish Institute of Computer Science.
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
* 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.
|
|
|
|
*
|
2010-11-23 18:11:00 +00:00
|
|
|
* $Id: nullrdc.c,v 1.4 2010/11/23 18:11:00 nifi Exp $
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* \file
|
2010-11-23 18:11:00 +00:00
|
|
|
* A null RDC implementation that uses framer for headers.
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
* \author
|
|
|
|
* Adam Dunkels <adam@sics.se>
|
2010-11-23 18:11:00 +00:00
|
|
|
* Niclas Finne <nfi@sics.se>
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include "net/mac/nullrdc.h"
|
2010-06-14 19:19:16 +00:00
|
|
|
#include "net/packetbuf.h"
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
#include "net/netstack.h"
|
2011-02-22 19:14:19 +00:00
|
|
|
#include <string.h>
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
|
2010-11-23 18:11:00 +00:00
|
|
|
#define DEBUG 0
|
|
|
|
#if DEBUG
|
|
|
|
#include <stdio.h>
|
|
|
|
#define PRINTF(...) printf(__VA_ARGS__)
|
|
|
|
#else
|
|
|
|
#define PRINTF(...)
|
|
|
|
#endif
|
|
|
|
|
2011-06-15 15:51:57 +00:00
|
|
|
#ifdef NULLRDC_CONF_ADDRESS_FILTER
|
|
|
|
#define NULLRDC_ADDRESS_FILTER NULLRDC_CONF_ADDRESS_FILTER
|
|
|
|
#else
|
|
|
|
#define NULLRDC_ADDRESS_FILTER 1
|
|
|
|
#endif /* NULLRDC_CONF_ADDRESS_FILTER */
|
|
|
|
|
2010-11-23 18:11:00 +00:00
|
|
|
#ifndef NULLRDC_802154_AUTOACK
|
|
|
|
#ifdef NULLRDC_CONF_802154_AUTOACK
|
|
|
|
#define NULLRDC_802154_AUTOACK NULLRDC_CONF_802154_AUTOACK
|
|
|
|
#else
|
|
|
|
#define NULLRDC_802154_AUTOACK 0
|
|
|
|
#endif /* NULLRDC_CONF_802154_AUTOACK */
|
|
|
|
#endif /* NULLRDC_802154_AUTOACK */
|
|
|
|
|
2011-02-22 19:14:19 +00:00
|
|
|
#ifndef NULLRDC_802154_AUTOACK_HW
|
|
|
|
#ifdef NULLRDC_CONF_802154_AUTOACK_HW
|
|
|
|
#define NULLRDC_802154_AUTOACK_HW NULLRDC_CONF_802154_AUTOACK_HW
|
|
|
|
#else
|
|
|
|
#define NULLRDC_802154_AUTOACK_HW 0
|
|
|
|
#endif /* NULLRDC_CONF_802154_AUTOACK_HW */
|
|
|
|
#endif /* NULLRDC_802154_AUTOACK_HW */
|
|
|
|
|
2010-11-23 18:11:00 +00:00
|
|
|
#if NULLRDC_802154_AUTOACK
|
|
|
|
#include "sys/rtimer.h"
|
|
|
|
#include "dev/watchdog.h"
|
|
|
|
|
|
|
|
#define ACK_WAIT_TIME RTIMER_SECOND / 2500
|
|
|
|
#define AFTER_ACK_DETECTED_WAIT_TIME RTIMER_SECOND / 1500
|
|
|
|
#define ACK_LEN 3
|
2011-02-22 19:14:19 +00:00
|
|
|
#endif /* NULLRDC_802154_AUTOACK */
|
2010-11-23 18:11:00 +00:00
|
|
|
|
2011-02-22 19:14:19 +00:00
|
|
|
#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
|
2010-11-23 18:11:00 +00:00
|
|
|
struct seqno {
|
|
|
|
rimeaddr_t sender;
|
|
|
|
uint8_t seqno;
|
|
|
|
};
|
|
|
|
|
2011-02-21 13:11:17 +00:00
|
|
|
#ifdef NETSTACK_CONF_MAC_SEQNO_HISTORY
|
|
|
|
#define MAX_SEQNOS NETSTACK_CONF_MAC_SEQNO_HISTORY
|
|
|
|
#else /* NETSTACK_CONF_MAC_SEQNO_HISTORY */
|
|
|
|
#define MAX_SEQNOS 16
|
|
|
|
#endif /* NETSTACK_CONF_MAC_SEQNO_HISTORY */
|
|
|
|
|
2010-11-23 18:11:00 +00:00
|
|
|
static struct seqno received_seqnos[MAX_SEQNOS];
|
2011-02-22 19:14:19 +00:00
|
|
|
#endif /* NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW */
|
2010-11-23 18:11:00 +00:00
|
|
|
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static void
|
|
|
|
send_packet(mac_callback_t sent, void *ptr)
|
|
|
|
{
|
|
|
|
int ret;
|
2010-11-23 18:11:00 +00:00
|
|
|
packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &rimeaddr_node_addr);
|
2011-02-22 19:14:19 +00:00
|
|
|
#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
|
2010-11-23 18:11:00 +00:00
|
|
|
packetbuf_set_attr(PACKETBUF_ATTR_MAC_ACK, 1);
|
2011-02-22 19:14:19 +00:00
|
|
|
#endif /* NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW */
|
2010-11-23 18:11:00 +00:00
|
|
|
|
|
|
|
if(NETSTACK_FRAMER.create() == 0) {
|
|
|
|
/* Failed to allocate space for headers */
|
|
|
|
PRINTF("nullrdc: send failed, too large header\n");
|
|
|
|
ret = MAC_TX_ERR_FATAL;
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
} else {
|
2010-11-23 18:11:00 +00:00
|
|
|
|
|
|
|
#if NULLRDC_802154_AUTOACK
|
|
|
|
int is_broadcast;
|
|
|
|
uint8_t dsn;
|
|
|
|
dsn = ((uint8_t *)packetbuf_hdrptr())[2] & 0xff;
|
|
|
|
|
|
|
|
NETSTACK_RADIO.prepare(packetbuf_hdrptr(), packetbuf_totlen());
|
|
|
|
|
|
|
|
is_broadcast = rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER),
|
|
|
|
&rimeaddr_null);
|
|
|
|
|
|
|
|
if(NETSTACK_RADIO.receiving_packet() ||
|
|
|
|
(!is_broadcast && NETSTACK_RADIO.pending_packet())) {
|
|
|
|
|
|
|
|
/* Currently receiving a packet over air or the radio has
|
|
|
|
already received a packet that needs to be read before
|
|
|
|
sending with auto ack. */
|
|
|
|
ret = MAC_TX_COLLISION;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
switch(NETSTACK_RADIO.transmit(packetbuf_totlen())) {
|
|
|
|
case RADIO_TX_OK:
|
|
|
|
if(is_broadcast) {
|
|
|
|
ret = MAC_TX_OK;
|
|
|
|
} else {
|
|
|
|
rtimer_clock_t wt;
|
|
|
|
|
|
|
|
/* Check for ack */
|
|
|
|
wt = RTIMER_NOW();
|
|
|
|
watchdog_periodic();
|
|
|
|
while(RTIMER_CLOCK_LT(RTIMER_NOW(), wt + ACK_WAIT_TIME));
|
|
|
|
|
|
|
|
ret = MAC_TX_NOACK;
|
|
|
|
if(NETSTACK_RADIO.receiving_packet() ||
|
|
|
|
NETSTACK_RADIO.pending_packet() ||
|
|
|
|
NETSTACK_RADIO.channel_clear() == 0) {
|
|
|
|
int len;
|
|
|
|
uint8_t ackbuf[ACK_LEN];
|
|
|
|
|
|
|
|
wt = RTIMER_NOW();
|
|
|
|
watchdog_periodic();
|
|
|
|
while(RTIMER_CLOCK_LT(RTIMER_NOW(),
|
|
|
|
wt + AFTER_ACK_DETECTED_WAIT_TIME));
|
|
|
|
|
|
|
|
if(NETSTACK_RADIO.pending_packet()) {
|
|
|
|
len = NETSTACK_RADIO.read(ackbuf, ACK_LEN);
|
|
|
|
if(len == ACK_LEN && ackbuf[2] == dsn) {
|
|
|
|
/* Ack received */
|
|
|
|
ret = MAC_TX_OK;
|
|
|
|
} else {
|
|
|
|
/* Not an ack or ack not for us: collision */
|
|
|
|
ret = MAC_TX_COLLISION;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case RADIO_TX_COLLISION:
|
|
|
|
ret = MAC_TX_COLLISION;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = MAC_TX_ERR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#else /* ! NULLRDC_802154_AUTOACK */
|
|
|
|
|
|
|
|
switch(NETSTACK_RADIO.send(packetbuf_hdrptr(), packetbuf_totlen())) {
|
|
|
|
case RADIO_TX_OK:
|
|
|
|
ret = MAC_TX_OK;
|
|
|
|
break;
|
|
|
|
case RADIO_TX_COLLISION:
|
|
|
|
ret = MAC_TX_COLLISION;
|
|
|
|
break;
|
2011-02-22 18:57:29 +00:00
|
|
|
case RADIO_TX_NOACK:
|
|
|
|
ret = MAC_TX_NOACK;
|
|
|
|
break;
|
2010-11-23 18:11:00 +00:00
|
|
|
default:
|
|
|
|
ret = MAC_TX_ERR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* ! NULLRDC_802154_AUTOACK */
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
}
|
|
|
|
mac_call_sent_callback(sent, ptr, ret, 1);
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
static void
|
|
|
|
packet_input(void)
|
|
|
|
{
|
2010-11-23 18:11:00 +00:00
|
|
|
#if NULLRDC_802154_AUTOACK
|
|
|
|
if(packetbuf_datalen() == ACK_LEN) {
|
|
|
|
/* Ignore ack packets */
|
|
|
|
/* PRINTF("nullrdc: ignored ack\n"); */
|
|
|
|
} else
|
|
|
|
#endif /* NULLRDC_802154_AUTOACK */
|
|
|
|
if(NETSTACK_FRAMER.parse() == 0) {
|
|
|
|
PRINTF("nullrdc: failed to parse %u\n", packetbuf_datalen());
|
2011-06-15 15:51:57 +00:00
|
|
|
#if NULLRDC_ADDRESS_FILTER
|
|
|
|
} else if(!rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER),
|
|
|
|
&rimeaddr_node_addr) &&
|
|
|
|
!rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER),
|
|
|
|
&rimeaddr_null)) {
|
|
|
|
PRINTF("nullrdc: not for us\n");
|
|
|
|
#endif /* NULLRDC_ADDRESS_FILTER */
|
2010-11-23 18:11:00 +00:00
|
|
|
} else {
|
2011-02-22 19:14:19 +00:00
|
|
|
#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
|
2010-11-23 18:11:00 +00:00
|
|
|
/* Check for duplicate packet by comparing the sequence number
|
|
|
|
of the incoming packet with the last few ones we saw. */
|
|
|
|
int i;
|
|
|
|
for(i = 0; i < MAX_SEQNOS; ++i) {
|
|
|
|
if(packetbuf_attr(PACKETBUF_ATTR_PACKET_ID) == received_seqnos[i].seqno &&
|
|
|
|
rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_SENDER),
|
|
|
|
&received_seqnos[i].sender)) {
|
|
|
|
/* Drop the packet. */
|
|
|
|
PRINTF("nullrdc: drop duplicate link layer packet %u\n",
|
|
|
|
packetbuf_attr(PACKETBUF_ATTR_PACKET_ID));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for(i = MAX_SEQNOS - 1; i > 0; --i) {
|
|
|
|
memcpy(&received_seqnos[i], &received_seqnos[i - 1],
|
|
|
|
sizeof(struct seqno));
|
|
|
|
}
|
|
|
|
received_seqnos[0].seqno = packetbuf_attr(PACKETBUF_ATTR_PACKET_ID);
|
|
|
|
rimeaddr_copy(&received_seqnos[0].sender,
|
|
|
|
packetbuf_addr(PACKETBUF_ADDR_SENDER));
|
|
|
|
#endif /* NULLRDC_802154_AUTOACK */
|
|
|
|
NETSTACK_MAC.input();
|
|
|
|
}
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
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();
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
2010-02-23 20:09:11 +00:00
|
|
|
const struct rdc_driver nullrdc_driver = {
|
A work-in-progress rework of the Contiki MAC and radio layers. The
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
|
|
|
"nullrdc",
|
|
|
|
init,
|
|
|
|
send_packet,
|
|
|
|
packet_input,
|
|
|
|
on,
|
|
|
|
off,
|
|
|
|
channel_check_interval,
|
|
|
|
};
|
|
|
|
/*---------------------------------------------------------------------------*/
|