Я не силён в программировании, поэтому вынужден попросить описать каждую строчку кода (что она значит). | Код |
1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3 * Copyright © 2011 The Boeing Company
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Tom Henderson <[email protected]>
19 */
20
21 /*
22 * Try to send data end-to-end through a LrWpanMac <-> LrWpanPhy <->
23 * SpectrumChannel <-> LrWpanPhy <-> LrWpanMac chain
24 *
25 * Trace Phy state changes, and Mac DataIndication and DataConfirm events
26 * to stdout
27 */
28 #include <ns3/log.h>
29 #include <ns3/core-module.h>
30 #include <ns3/lr-wpan-module.h>
31 #include <ns3/propagation-loss-model.h>
32 #include <ns3/propagation-delay-model.h>
33 #include <ns3/simulator.h>
34 #include <ns3/single-model-spectrum-channel.h>
35 #include <ns3/constant-position-mobility-model.h>
36 #include <ns3/packet.h>
37
38 #include <iostream>
39
40 using namespace ns3;
41
42 static void DataIndication (McpsDataIndicationParams params, Ptr<Packet> p)
43 {
44 NS_LOG_UNCOND ("Received packet of size " << p->GetSize ());
45 }
46
47 static void DataConfirm (McpsDataConfirmParams params)
48 {
49 NS_LOG_UNCOND ("LrWpanMcpsDataConfirmStatus = " << params.m_status);
50 }
51
52 static void StateChangeNotification (std::string context, Time now, LrWpanPhyEnumeration oldState, LrWpanPhyEnumeration newState)
53 {
54 NS_LOG_UNCOND (context << " state change at " << now.GetSeconds ()
55 << " from " << LrWpanHelper::LrWpanPhyEnumerationPrinter (oldState)
56 << " to " << LrWpanHelper::LrWpanPhyEnumerationPrinter (newState));
57 }
58
59 int main (int argc, char *argv[])
60 {
61 bool verbose = false;
62
63 CommandLine cmd;
64
65 cmd.AddValue ("verbose", "turn on all log components", verbose);
66
67 cmd.Parse (argc, argv);
68
69 LrWpanHelper lrWpanHelper;
70 if (verbose)
71 {
72 lrWpanHelper.EnableLogComponents ();
73 }
74
75 // Enable calculation of FCS in the trailers. Only necessary when interacting with real devices or wireshark.
76 // GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true));
77
78 // Create 2 nodes, and a NetDevice for each one
79 Ptr<Node> n0 = CreateObject <Node> ();
80 Ptr<Node> n1 = CreateObject <Node> ();
81
82 Ptr<LrWpanNetDevice> dev0 = CreateObject<LrWpanNetDevice> ();
83 Ptr<LrWpanNetDevice> dev1 = CreateObject<LrWpanNetDevice> ();
84
85 dev0->SetAddress (Mac16Address ("00:01"));
86 dev1->SetAddress (Mac16Address ("00:02"));
87
88 // Each device must be attached to the same channel
89 Ptr<SingleModelSpectrumChannel> channel = CreateObject<SingleModelSpectrumChannel> ();
90 Ptr<LogDistancePropagationLossModel> propModel = CreateObject<LogDistancePropagationLossModel> ();
91 Ptr<ConstantSpeedPropagationDelayModel> delayModel = CreateObject<ConstantSpeedPropagationDelayModel> ();
92 channel->AddPropagationLossModel (propModel);
93 channel->SetPropagationDelayModel (delayModel);
94
95 dev0->SetChannel (channel);
96 dev1->SetChannel (channel);
97
98 // To complete configuration, a LrWpanNetDevice must be added to a node
99 n0->AddDevice (dev0);
100 n1->AddDevice (dev1);
101
102 // Trace state changes in the phy
103 dev0->GetPhy ()->TraceConnect ("TrxState", std::string ("phy0"), MakeCallback (&StateChangeNotification));
104 dev1->GetPhy ()->TraceConnect ("TrxState", std::string ("phy1"), MakeCallback (&StateChangeNotification));
105
106 Ptr<ConstantPositionMobilityModel> sender0Mobility = CreateObject<ConstantPositionMobilityModel> ();
107 sender0Mobility->SetPosition (Vector (0,0,0));
108 dev0->GetPhy ()->SetMobility (sender0Mobility);
109 Ptr<ConstantPositionMobilityModel> sender1Mobility = CreateObject<ConstantPositionMobilityModel> ();
110 // Configure position 10 m distance
111 sender1Mobility->SetPosition (Vector (0,10,0));
112 dev1->GetPhy ()->SetMobility (sender1Mobility);
113
114 McpsDataConfirmCallback cb0;
115 cb0 = MakeCallback (&DataConfirm);
116 dev0->GetMac ()->SetMcpsDataConfirmCallback (cb0);
117
118 McpsDataIndicationCallback cb1;
119 cb1 = MakeCallback (&DataIndication);
120 dev0->GetMac ()->SetMcpsDataIndicationCallback (cb1);
121
122 McpsDataConfirmCallback cb2;
123 cb2 = MakeCallback (&DataConfirm);
124 dev1->GetMac ()->SetMcpsDataConfirmCallback (cb2);
125
126 McpsDataIndicationCallback cb3;
127 cb3 = MakeCallback (&DataIndication);
128 dev1->GetMac ()->SetMcpsDataIndicationCallback (cb3);
129
130 // Tracing
131 lrWpanHelper.EnablePcapAll (std::string ("lr-wpan-data"), true);
132 AsciiTraceHelper ascii;
133 Ptr<OutputStreamWrapper> stream = ascii.CreateFileStream ("lr-wpan-data.tr");
134 lrWpanHelper.EnableAsciiAll (stream);
135
136 // The below should trigger two callbacks when end-to-end data is working
137 // 1) DataConfirm callback is called
138 // 2) DataIndication callback is called with value of 50
139 Ptr<Packet> p0 = Create<Packet> (50); // 50 bytes of dummy data
140 McpsDataRequestParams params;
141 params.m_srcAddrMode = SHORT_ADDR;
142 params.m_dstAddrMode = SHORT_ADDR;
143 params.m_dstPanId = 0;
144 params.m_dstAddr = Mac16Address ("00:02");
145 params.m_msduHandle = 0;
146 params.m_txOptions = TX_OPTION_ACK;
147 // dev0->GetMac ()->McpsDataRequest (params, p0);
148 Simulator::ScheduleWithContext (1, Seconds (0.0),
149 &LrWpanMac::McpsDataRequest,
150 dev0->GetMac (), params, p0);
151
152 // Send a packet back at time 2 seconds
153 Ptr<Packet> p2 = Create<Packet> (60); // 60 bytes of dummy data
154 params.m_dstAddr = Mac16Address ("00:01");
155 Simulator::ScheduleWithContext (2, Seconds (2.0),
156 &LrWpanMac::McpsDataRequest,
157 dev1->GetMac (), params, p2);
158
159 Simulator::Run ();
160
161 Simulator::Destroy ();
162 return 0;
163 }
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