--- /dev/null
+/*
+ * Copyright (c) 2007, Vanderbilt University
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL THE VANDERBILT UNIVERSITY BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE VANDERBILT
+ * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE VANDERBILT UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE VANDERBILT UNIVERSITY HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Author: Miklos Maroti
+ */
+
+#include <TimeSyncMessageLayer.h>
+
+module TimeSyncMessageLayerP
+{
+ provides
+ {
+ interface Receive[am_id_t id];
+ interface Receive as Snoop[am_id_t id];
+ interface AMPacket;
+ interface Packet;
+
+ interface TimeSyncAMSend<TRadio, uint32_t> as TimeSyncAMSendRadio[am_id_t id];
+ interface TimeSyncAMSend<TMilli, uint32_t> as TimeSyncAMSendMilli[am_id_t id];
+
+ interface TimeSyncPacket<TRadio, uint32_t> as TimeSyncPacketRadio;
+ interface TimeSyncPacket<TMilli, uint32_t> as TimeSyncPacketMilli;
+ }
+
+ uses
+ {
+ interface AMSend as SubAMSend;
+ interface Receive as SubReceive;
+ interface Receive as SubSnoop;
+ interface AMPacket as SubAMPacket;
+ interface Packet as SubPacket;
+
+ interface PacketTimeStamp<TRadio, uint32_t> as PacketTimeStampRadio;
+ interface PacketTimeStamp<TMilli, uint32_t> as PacketTimeStampMilli;
+
+ interface LocalTime<TRadio> as LocalTimeRadio;
+ interface LocalTime<TMilli> as LocalTimeMilli;
+
+ interface PacketField<uint8_t> as PacketTimeSyncOffset;
+ }
+}
+
+implementation
+{
+ inline timesync_footer_t* getFooter(message_t* msg)
+ {
+ // we use the payload length that we export (the smaller one)
+ return (timesync_footer_t*)(msg->data + call Packet.payloadLength(msg));
+ }
+
+/*----------------- Packet -----------------*/
+
+ command void Packet.clear(message_t* msg)
+ {
+ call SubPacket.clear(msg);
+ }
+
+ command void Packet.setPayloadLength(message_t* msg, uint8_t len)
+ {
+ call SubPacket.setPayloadLength(msg, len + sizeof(timesync_footer_t));
+ }
+
+ command uint8_t Packet.payloadLength(message_t* msg)
+ {
+ return call SubPacket.payloadLength(msg) - sizeof(timesync_footer_t);
+ }
+
+ command uint8_t Packet.maxPayloadLength()
+ {
+ return call SubPacket.maxPayloadLength() - sizeof(timesync_footer_t);
+ }
+
+ command void* Packet.getPayload(message_t* msg, uint8_t len)
+ {
+ return call SubPacket.getPayload(msg, len + sizeof(timesync_footer_t));
+ }
+
+/*----------------- AMPacket -----------------*/
+
+ inline command am_addr_t AMPacket.address()
+ {
+ return call SubAMPacket.address();
+ }
+
+ inline command am_group_t AMPacket.localGroup()
+ {
+ return call SubAMPacket.localGroup();
+ }
+
+ inline command bool AMPacket.isForMe(message_t* msg)
+ {
+ return call SubAMPacket.isForMe(msg) && call SubAMPacket.type(msg) == AM_TIMESYNCMSG;
+ }
+
+ inline command am_addr_t AMPacket.destination(message_t* msg)
+ {
+ return call SubAMPacket.destination(msg);
+ }
+
+ inline command void AMPacket.setDestination(message_t* msg, am_addr_t addr)
+ {
+ call SubAMPacket.setDestination(msg, addr);
+ }
+
+ inline command am_addr_t AMPacket.source(message_t* msg)
+ {
+ return call SubAMPacket.source(msg);
+ }
+
+ inline command void AMPacket.setSource(message_t* msg, am_addr_t addr)
+ {
+ call SubAMPacket.setSource(msg, addr);
+ }
+
+ inline command am_id_t AMPacket.type(message_t* msg)
+ {
+ return getFooter(msg)->type;
+ }
+
+ inline command void AMPacket.setType(message_t* msg, am_id_t type)
+ {
+ getFooter(msg)->type = type;
+ }
+
+ inline command am_group_t AMPacket.group(message_t* msg)
+ {
+ return call SubAMPacket.group(msg);
+ }
+
+ inline command void AMPacket.setGroup(message_t* msg, am_group_t grp)
+ {
+ call SubAMPacket.setGroup(msg, grp);
+ }
+
+/*----------------- TimeSyncAMSendRadio -----------------*/
+
+ command error_t TimeSyncAMSendRadio.send[am_id_t id](am_addr_t addr, message_t* msg, uint8_t len, uint32_t event_time)
+ {
+ timesync_footer_t* footer = (timesync_footer_t*)(msg->data + len);
+
+ footer->type = id;
+ footer->absolute = event_time;
+ call PacketTimeSyncOffset.set(msg, offsetof(message_t, data) + len + offsetof(timesync_footer_t, absolute));
+
+ return call SubAMSend.send(addr, msg, len + sizeof(timesync_footer_t));
+ }
+
+ command error_t TimeSyncAMSendRadio.cancel[am_id_t id](message_t* msg)
+ {
+ return call SubAMSend.cancel(msg);
+ }
+
+ default event void TimeSyncAMSendRadio.sendDone[am_id_t id](message_t* msg, error_t error)
+ {
+ }
+
+ command uint8_t TimeSyncAMSendRadio.maxPayloadLength[am_id_t id]()
+ {
+ return call SubAMSend.maxPayloadLength() - sizeof(timesync_footer_t);
+ }
+
+ command void* TimeSyncAMSendRadio.getPayload[am_id_t id](message_t* msg, uint8_t len)
+ {
+ return call SubAMSend.getPayload(msg, len + sizeof(timesync_footer_t));
+ }
+
+/*----------------- TimeSyncAMSendMilli -----------------*/
+
+ command error_t TimeSyncAMSendMilli.send[am_id_t id](am_addr_t addr, message_t* msg, uint8_t len, uint32_t event_time)
+ {
+ // compute elapsed time in millisecond
+ event_time = ((int32_t)(event_time - call LocalTimeMilli.get()) << RADIO_ALARM_MILLI_EXP) + call LocalTimeRadio.get();
+
+ return call TimeSyncAMSendRadio.send[id](addr, msg, len, event_time);
+ }
+
+ command error_t TimeSyncAMSendMilli.cancel[am_id_t id](message_t* msg)
+ {
+ return call TimeSyncAMSendRadio.cancel[id](msg);
+ }
+
+ default event void TimeSyncAMSendMilli.sendDone[am_id_t id](message_t* msg, error_t error)
+ {
+ }
+
+ command uint8_t TimeSyncAMSendMilli.maxPayloadLength[am_id_t id]()
+ {
+ return call TimeSyncAMSendRadio.maxPayloadLength[id]();
+ }
+
+ command void* TimeSyncAMSendMilli.getPayload[am_id_t id](message_t* msg, uint8_t len)
+ {
+ return call TimeSyncAMSendRadio.getPayload[id](msg, len);
+ }
+
+/*----------------- SubSend.sendDone -------------------*/
+
+ event void SubAMSend.sendDone(message_t* msg, error_t error)
+ {
+ am_id_t id = call AMPacket.type(msg);
+
+ signal TimeSyncAMSendRadio.sendDone[id](msg, error);
+ signal TimeSyncAMSendMilli.sendDone[id](msg, error);
+ }
+
+/*----------------- SubReceive and SubSnoop -------------------*/
+
+ event message_t* SubReceive.receive(message_t* msg, void* payload, uint8_t len)
+ {
+ am_id_t id = call AMPacket.type(msg);
+
+ return signal Receive.receive[id](msg, payload, len - sizeof(timesync_footer_t));
+ }
+
+ default event message_t* Receive.receive[am_id_t id](message_t* msg, void* payload, uint8_t len) { return msg; }
+
+ event message_t* SubSnoop.receive(message_t* msg, void* payload, uint8_t len)
+ {
+ am_id_t id = call AMPacket.type(msg);
+
+ return signal Snoop.receive[id](msg, payload, len - sizeof(timesync_footer_t));
+ }
+
+ default event message_t* Snoop.receive[am_id_t id](message_t* msg, void* payload, uint8_t len) { return msg; }
+
+/*----------------- TimeSyncPacketRadio -----------------*/
+
+ command bool TimeSyncPacketRadio.isValid(message_t* msg)
+ {
+ return call PacketTimeStampRadio.isValid(msg) && getFooter(msg)->relative != 0x80000000L;
+ }
+
+ command uint32_t TimeSyncPacketRadio.eventTime(message_t* msg)
+ {
+ return getFooter(msg)->relative + call PacketTimeStampRadio.timestamp(msg);
+ }
+
+/*----------------- TimeSyncPacketMilli -----------------*/
+
+ command bool TimeSyncPacketMilli.isValid(message_t* msg)
+ {
+ return call PacketTimeStampMilli.isValid(msg) && getFooter(msg)->relative != 0x80000000L;
+ }
+
+ command uint32_t TimeSyncPacketMilli.eventTime(message_t* msg)
+ {
+ return ((int32_t)(getFooter(msg)->relative) >> RADIO_ALARM_MILLI_EXP) + call PacketTimeStampMilli.timestamp(msg);
+ }
+}
projects / tinyos-2.x.git / blobdiff