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main.cpp
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main.cpp
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/*
* Copyright (c) 2018, Vit Holasek
* 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 copyright holder 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/
#include <stdio.h>
#include <string.h>
#include "common/instance.hpp"
#include "common/timer.hpp"
#include "openthread/instance.h"
#include "openthread-system.h"
#include "utils/slaac_address.hpp"
#include "mqttsn/mqttsn_client.hpp"
#define NETWORK_NAME "OTBR4444"
#define PANID 0x4444
#define EXTPANID {0x33, 0x33, 0x33, 0x33, 0x44, 0x44, 0x44, 0x44}
#define DEFAULT_CHANNEL 15
#define MASTER_KEY {0x33, 0x33, 0x44, 0x44, 0x33, 0x33, 0x44, 0x44, 0x33, 0x33, 0x44, 0x44, 0x33, 0x33, 0x44, 0x44}
#define GATEWAY_PORT 10000
#define GATEWAY_ADDRESS "2018:ff9b::ac12:8"
#define CLIENT_ID "THREAD"
#define CLIENT_PORT 10000
// Duration in ms how long will MQTT-SN client stay in sleep mode
#define SLEEP_DURATION_MS 60000
// Maximal awake time
#define AWAKE_TIMEOUT_MS 2000
#define TOPIC_NAME "sensors"
using namespace ot::Mqttsn;
static MqttsnClient* sClient = NULL;
static const uint8_t sExpanId[] = EXTPANID;
static const uint8_t sMasterKey[] = MASTER_KEY;
static uint32_t sNextAwakeAt = 0xffffffff;
static otMqttsnReturnCode HandlePublishReceived(const uint8_t* aPayload, int32_t aPayloadLength, const otMqttsnTopic* aTopic, void* aContext)
{
OT_UNUSED_VARIABLE(aPayload);
OT_UNUSED_VARIABLE(aPayloadLength);
OT_UNUSED_VARIABLE(aTopic);
OT_UNUSED_VARIABLE(aContext);
// Handle received message from subscribed topic
return kCodeAccepted;
}
static void HandleDisconnected(otMqttsnDisconnectType aType, void* aContext)
{
OT_UNUSED_VARIABLE(aType);
OT_UNUSED_VARIABLE(aContext);
// Handle disconnect
if (aType == kDisconnectAsleep && sNextAwakeAt == 0xffffffff)
{
// Handle asleep event
sNextAwakeAt = ot::TimerMilli::GetNow().GetValue() + SLEEP_DURATION_MS;
}
}
static void HandleSubscribed(otMqttsnReturnCode aCode, const otMqttsnTopic* aTopic, otMqttsnQos aQos, void* aContext)
{
OT_UNUSED_VARIABLE(aCode);
OT_UNUSED_VARIABLE(aTopic);
OT_UNUSED_VARIABLE(aQos);
OT_UNUSED_VARIABLE(aContext);
// Handle subscribed event
// Go to sleep and schedule awake timer
// Add some time because of crystal precision deviation
sClient->Sleep(SLEEP_DURATION_MS + 5000);
}
static void HandleConnected(ReturnCode aCode, void* aContext)
{
OT_UNUSED_VARIABLE(aContext);
// Handle connected
if (aCode == kCodeAccepted)
{
// Set callback for received messages
sClient->SetPublishReceivedCallback(HandlePublishReceived, NULL);
// Register disconnected callback
sClient->SetDisconnectedCallback(HandleDisconnected, NULL);
// Obtain target topic ID
Topic topic = Topic::FromTopicName(TOPIC_NAME);
sClient->Subscribe(topic, kQos1, HandleSubscribed, NULL);
}
}
static void MqttsnConnect()
{
ot::Ip6::Address address;
address.FromString(GATEWAY_ADDRESS);
MqttsnConfig config;
// Set MQTT-SN client configuration settings
config.SetClientId(CLIENT_ID);
config.SetKeepAlive(30);
config.SetCleanSession(true);
config.SetPort(GATEWAY_PORT);
config.SetAddress(address);
// Register connected callback
sClient->SetConnectedCallback(HandleConnected, NULL);
// Connect to the MQTT broker (gateway)
sClient->Connect(config);
}
static void StateChanged(otChangedFlags aFlags, void *aContext)
{
ot::Instance &instance = *reinterpret_cast<ot::Instance*>(aContext);
// when thread role changed
if (aFlags & OT_CHANGED_THREAD_ROLE)
{
otDeviceRole role = instance.Get<ot::Mle::MleRouter>().GetRole();
// If role changed to any of active roles and MQTT-SN client is not connected then connect
if ((role == OT_DEVICE_ROLE_CHILD || role == OT_DEVICE_ROLE_LEADER || role == OT_DEVICE_ROLE_ROUTER)
&& sClient->GetState() == kStateDisconnected)
{
MqttsnConnect();
}
}
}
int main(int aArgc, char *aArgv[])
{
otError error = OT_ERROR_NONE;
ot::Mac::ExtendedPanId extendedPanid;
ot::MasterKey masterKey;
otSysInit(aArgc, aArgv);
ot::Instance &instance = ot::Instance::InitSingle();
sClient = &instance.Get<MqttsnClient>();
ot::ThreadNetif &netif = instance.Get<ot::ThreadNetif>();
ot::Mac::Mac &mac = instance.Get<ot::Mac::Mac>();
// Set default network settings
// Set network name
SuccessOrExit(error = mac.SetNetworkName(NETWORK_NAME));
// Set extended PANID
memcpy(extendedPanid.m8, sExpanId, sizeof(sExpanId));
mac.SetExtendedPanId(extendedPanid);
// Set PANID
mac.SetPanId(PANID);
// Set channel
SuccessOrExit(error = mac.SetPanChannel(DEFAULT_CHANNEL));
// Set masterkey
memcpy(masterKey.m8, sMasterKey, sizeof(sMasterKey));
SuccessOrExit(error = instance.Get<ot::KeyManager>().SetMasterKey(masterKey));
instance.Get<ot::MeshCoP::ActiveDataset>().Clear();
instance.Get<ot::MeshCoP::PendingDataset>().Clear();
// Register notifier callback to receive thread role changed events
instance.Get<ot::Notifier>().RegisterCallback(StateChanged, &instance);
// Start thread network
instance.Get<ot::Utils::Slaac>().Enable();
netif.Up();
SuccessOrExit(error = instance.Get<ot::Mle::MleRouter>().Start(false));
// Start MQTT-SN client
SuccessOrExit(error = sClient->Start(CLIENT_PORT));
while (true)
{
instance.Get<ot::TaskletScheduler>().ProcessQueuedTasklets();
otSysProcessDrivers(&instance);
// Awake when scheduled time passed
if (ot::TimerMilli::GetNow().GetValue() > sNextAwakeAt)
{
sClient->Awake(AWAKE_TIMEOUT_MS);
sNextAwakeAt += SLEEP_DURATION_MS;
}
}
return 0;
exit:
return 1;
}
extern "C" void otPlatLog(otLogLevel aLogLevel, otLogRegion aLogRegion, const char *aFormat, ...)
{
OT_UNUSED_VARIABLE(aLogLevel);
OT_UNUSED_VARIABLE(aLogRegion);
OT_UNUSED_VARIABLE(aFormat);
}