/// <summary>
/// To start the network layer
/// </summary>
/// <param name="panId">Pan ID of the network to set on Mac layer</param>
/// <param name="panCoordinator">True if this node is the network coordinator</param>
/// <param name="logicalChannel">Logical channel to use</param>
/// <param name="channelPage">Channel page to use</param>
/// <param name="neighours">Set of neighbors to bootstrap. Not used when started as network coordinator</param>
/// <param name="handler">Handler for confirmation message</param>
public void Start(UInt16 panId, bool netCoordinator, byte logicalChannel, byte channelPage, UInt16[] neighours, StartConfirmHandler handler)
{
if (_isRunning)
{
if (handler != null)
handler.Invoke(this, Status.Busy, 0);
return;
}
_isRunning = true;
_panId = panId;
_startConfirmHandler = handler;
if (netCoordinator)
{
_addrShort = cCoordinatorShortAddr;
_addrServer = new AddressAndDiscoveryServer(this); // always exists if isAddrServer is true
}
else
{
_addrShort = cUnallocatedShortAddr;
_addrServer = null;
}
_isAddrServer = netCoordinator;
_mac.DataIndication = MacDataIndHandler;
_mac.GetDeviceAddress(out _addrExt);
PibValue value = new PibValue();
value.Int = _addrShort;
_mac.SetRequest(PibAttribute.macShortAddress, 0, value, null);
AutoResetEvent startEvent = new AutoResetEvent(false);
Status result = Status.Error;
_mac.StartRequest(_panId,
logicalChannel,
channelPage,
0, 15, 0,
netCoordinator,
false, false,
new SecurityOptions(), new SecurityOptions(), delegate(
IMacMgmtSap sender,
MacEnum status)
{
if (status == MacEnum.Success)
result = Status.Success;
startEvent.Set();
});
startEvent.WaitOne();
if (result == Status.Success && !_isAddrServer)
{
_getAddressNeighbors = neighours;
_getAddressCancel = false;
_getAddressEvent.Reset();
_getAddressThread = new Thread(GetAddressThread);
#if !MICROFRAMEWORK
_getAddressThread.IsBackground = true;
#endif
_getAddressThread.Start();
}
else
{
FinalizeStartup(result);
}
}
private void FinalizeStartup(Status result)
{
if (result == Status.Success)
{
_data.StartData(_addrShort);
_neighbourTable.Start(_addrShort);
// tune MAC attributes
PibValue value = new PibValue();
// set macMinBE (backoff exponent) to 1. SW-MAC is slow enough
value.Int = 1;
_mac.SetRequest(PibAttribute.macMinBE, 0, value, null);
// set macMaxFrameRetries to 7. Agressive retries to avoid upper layer dealing with link errors
value.Int = 7;
_mac.SetRequest(PibAttribute.macMaxFrameRetries, 0, value, null);
}
else
{
_isRunning = false;
}
if (_startConfirmHandler != null)
_startConfirmHandler.Invoke(this, result, _addrShort);
}
private void HandleAddressReply(
MacAddress srcAddr,
MacAddress dstAddr,
ref Frame sdu)
{
Message.AddressReply arep = new Message.AddressReply();
if (arep.ReadFromFrame(sdu))
{
if (dstAddr.Mode == MacAddressingMode.ExtendedAddress && dstAddr.ExtendedAddress == _addrExt)
{
// address is for us
if (_addrShort == cUnallocatedShortAddr)
{
_addrShort = arep.ShortAddr;
PibValue value = new PibValue();
value.Int = _addrShort;
_mac.SetRequest(PibAttribute.macShortAddress, 0, value, null);
_getAddressEvent.Set();
SetDiscoveryTimer(arep.DiscoveryInterval);
}
}
else
{
if (arep.HopsLeft > 0)
{
arep.HopsLeft--;
Frame frame = Frame.GetFrame(_macHeader, Message.AddressRequest.cLength + _macTailer);
if (arep.WriteToFrame(frame))
{
if (arep.BrokerAddr == _addrShort)
{
// we are the broker
MacDataRequest(arep.DeviceAddr, ref frame);
}
else
{
// forward to broker
_routingTable.DataRequest(arep.BrokerAddr, ref frame, 0, null, true);
}
}
Frame.Release(ref frame);
}
}
}
}
private void GetRequest(TaskGetRequest task)
{
if (task == null)
return;
if (task.handler == null)
return;
MacEnum status = MacEnum.Success;
PibValue value = new PibValue();
lock (_state)
{
switch (task.attribute)
{
case PibAttribute.phyCurrentChannel:
case PibAttribute.phyChannelsSupported:
case PibAttribute.phyTransmitPower:
case PibAttribute.phyCCAMode:
case PibAttribute.phyCurrentPage:
case PibAttribute.phyMaxFrameDuration:
case PibAttribute.phySHRDuration:
case PibAttribute.phySymbolsPerOctet:
{
Phy.Status statusPhy;
Phy.PibValue valPhy;
_phy.GetRequest((Phy.PibAttribute)task.attribute, out statusPhy, out valPhy);
if (statusPhy == Phy.Status.Success)
{
switch (valPhy.Type)
{
case Phy.PibValue.ValueType.Int:
value.Int = valPhy.Int;
break;
case Phy.PibValue.ValueType.IntArray:
value.IntArray = valPhy.IntArray;
break;
case Phy.PibValue.ValueType.Float:
value.Float = valPhy.Float;
break;
}
}
else
{
status = MacEnum.UnsupportedAttribute;
}
break;
}
case PibAttribute.macBeaconPayload:
{
Frame frame = null;
Frame payload = _state.macBeaconPayload;
if (payload != null)
{
frame = Frame.GetFrame(payload.LengthDataUsed);
frame.WriteToBack(payload);
}
value.Frame = frame;
break;
}
case PibAttribute.macPanId:
{
value.Int = _state.macPanId;
break;
}
case PibAttribute.macPromiscuousMode:
{
value.Bool = _state.macPromiscousMode;
break;
}
case PibAttribute.macShortAddress:
{
value.Int = _state.macShortAddr;
break;
}
case PibAttribute.macBeaconOrder:
{
value.Int = _state.macBeaconOrder;
break;
}
case PibAttribute.macSuperframeOrder:
{
value.Int = _state.macBeaconOrder;
break;
}
case PibAttribute.macMinBE:
{
value.Int = _state.macMinBE;
break;
}
case PibAttribute.macMaxBE:
{
value.Int = _state.macMaxBE;
break;
}
case PibAttribute.macMaxCSMABackoffs:
{
value.Int = _state.macMaxCSMABackoffs;
break;
}
case PibAttribute.macMaxFrameRetries:
{
value.Int = _state.macMaxFrameRetries;
break;
}
case PibAttribute.macAckWaitDuration:
case PibAttribute.macAssociatedPANCoord:
case PibAttribute.macAssociationPermit:
case PibAttribute.macAutoRequest:
case PibAttribute.macBattLifeExt:
case PibAttribute.macBattLifeExtPeriods:
case PibAttribute.macBeaconTxTime:
case PibAttribute.macBSN:
case PibAttribute.macCoordExtendedAddress:
case PibAttribute.macCoordShortAddress:
case PibAttribute.macDSN:
case PibAttribute.macGTSPermit:
case PibAttribute.macMaxFrameTotalWaitTime:
case PibAttribute.macResponseWaitTime:
case PibAttribute.macRxOnWhenIdle:
case PibAttribute.macSecurityEnabled:
case PibAttribute.macSyncSymbolOffset:
case PibAttribute.macTimestampSupported:
case PibAttribute.macTransactionPersistenceTime:
status = MacEnum.UnsupportedAttribute;
Trace.Print("MacGetRequest: unsupported attribute");
break;
}
}
if (task.handler != null)
{
task.handler.Invoke(this, status, task.attribute, task.attributeIndex, value);
}
}
private void SetBeaconPayload()
{
Frame frame = Frame.GetFrame(8);
frame.AllocBack(8);
frame.WriteCanonical(0, NetworkLayer.cMeshId);
PibValue value = new PibValue();
value.Frame = frame;
_net.Mac.SetRequest(PibAttribute.macBeaconPayload, 0, value, null);
}
// handler for MacGetRequest for supported channels
private void HandlerChannelsSupported(
IMacMgmtSap sender,
MacEnum status,
PibAttribute attribute,
int attributeIndex,
PibValue value)
{
if (!_scanning || attribute != PibAttribute.phyChannelsSupported)
return;
if (status != MacEnum.Success)
{
FinishScanning(Status.Error);
return;
}
_scanChannels = value.IntArray;
_scanChannelsCurrent = 0;
ScanNextPage();
}
public TaskSetRequest(
PibAttribute attribute,
int index,
PibValue value,
SetConfirmHandler handler)
: base(TaskType.SetRequest)
{
this.attribute = attribute;
this.index = index;
this.value = value;
this.handler = handler;
}
