/// <summary>
/// Encode command frame
/// </summary>
/// <param name="frame">target buffer</param>
/// <returns>True on success</returns>
public bool WriteToFrame(Frame frame)
{
if (frame == null || frame.LengthDataAvail < _lengthMax || frame.LengthDataUsed != 0)
return false;
frame.ReserveHeader(frame.LengthHeaderAvail + 1); // increase header space by one byte
frame.AllocBack(_lengthMax - 1); // reserve space without command type, so payload is at 0..n-1
EncodePayload(frame);
frame.AllocFront(1);
frame.Write(0, (byte)_type);
return true;
}
public bool WriteToFrame(Frame frame)
{
int len = Length();
if (frame == null || frame.LengthDataAvail < len)
return false;
frame.AllocBack(len);
int offset = 0;
frame.Write(offset, (byte)Message.Report);
offset++;
for (int i = 0; i < nodeCount; i++)
{
frame.Write(offset, nodes[i].addr);
offset += 2;
frame.Write(offset, nodes[i].rxBps);
offset += 4;
}
return true;
}
/// <summary>
/// Encode beacon into frame
/// </summary>
/// <param name="frame">target frame</param>
/// <returns>True on success</returns>
public bool WriteToFrame(Frame frame)
{
int len = Length();
if (frame == null || frame.LengthDataAvail < len || frame.LengthDataUsed > 0)
return false;
if (payload != null)
len -= payload.LengthDataUsed;
frame.AllocBack(len);
int offset = 0;
// 7.2.2.1.2 Superframe Specification field
int i;
i = (beaconOrder & 0xf) |
((superframeOrder & 0xf) << 4) |
((finalCapSlot & 0xf) << 8) |
((batteryLifeExtension & 1) << 12) |
((panCoordinator & 1) << 14) |
((associationPermit & 1) << 15);
frame.Write(offset, (UInt16)i);
offset += 2;
// 7.2.2.1.3 GTS Specification field
if (gtsLength > 7)
return false; // assert
i = (gtsLength & 7) |
((gtsPermit & 1) << 7);
frame.Write(offset, (Byte)i);
offset += 1;
// 7.2.2.1.4 GTS Directions field
if (gtsLength > 0)
{
i = (gtsDirectionsMask & 0x7F); // 7 bits
frame.Write(offset, (Byte)i);
offset += 1;
}
// 7.2.2.1.5 GTS List field
for (int k = 0; k < gtsLength; k++)
{
frame.Write(offset, gtsDescriptor[k].deviceShortAddr);
offset += 2;
i = (gtsDescriptor[k].gtsStartingSlot & 0xF) |
((gtsDescriptor[k].gtsLength & 0xF) << 4);
frame.Write(offset, (Byte)i);
offset++;
}
// 7.2.2.1.6 Pending Address Specification field
i = (pendingShort & 7) |
((pendingExt & 7) << 4);
frame.Write(offset, (Byte)i);
offset++;
// 7.2.2.1.7 Address List field
for (int k = 0; k < pendingShort; k++)
{
frame.Write(offset, shortAddrPending[k]);
offset += 2;
}
for (int k = 0; k < pendingExt; k++)
{
frame.Write(offset, extAddrPending[k]);
offset += 8;
}
// 7.2.2.1.8 Beacon Payload field
if (payload != null)
frame.WriteToBack(payload);
return true;
}
/// <summary>
/// Encodes the header into the front of the frame
/// </summary>
/// <param name="frame">The header is placed at the front of this frame</param>
/// <returns>True on success, false if the frame is too small or the header is invalid</returns>
public bool WriteToFrameHeader(Frame frame)
{
int len = Length();
if (frame.LengthHeaderAvail < len)
return false;
frame.AllocFront(len);
frame.WriteCanonical(0, fcs.Value);
frame.Write(2, seqNo);
int offset = 3;
AddressingMode dstMode = fcs.DstAddrMode;
AddressingMode srcMode = fcs.SrcAddrMode;
bool panIdCompression = fcs.PanIdCompression;
if (dstMode == AddressingMode.Reserved || srcMode == AddressingMode.Reserved ||
(panIdCompression && dstMode == AddressingMode.None))
return false;
if (dstMode != AddressingMode.None)
{ // dstPanId
frame.WriteCanonical(offset, dstPanId);
offset += 2;
}
if (dstMode == AddressingMode.Short)
{ // dstAddrShort
frame.WriteCanonical(offset, dstAddrShort);
offset += 2;
}
if (dstMode == AddressingMode.Extended)
{ // dstAddrShort
frame.WriteCanonical(offset, dstAddrExt);
offset += 8;
}
if (srcMode != AddressingMode.None && !panIdCompression)
{ // srcPanId
frame.WriteCanonical(offset, srcPanId);
offset += 2;
}
if (srcMode == AddressingMode.Short)
{ // dstAddrShort
frame.WriteCanonical(offset, srcAddrShort);
offset += 2;
}
if (srcMode == AddressingMode.Extended)
{ // dstAddrShort
frame.WriteCanonical(offset, srcAddrExt);
offset += 8;
}
// FIXME: secHeader
return true;
}
public bool WriteToFrame(Frame frame)
{
int len = Length();
if (frame == null || frame.LengthDataAvail < len)
return false;
frame.AllocBack(len);
int offset = 0;
frame.Write(offset, (byte)Message.Neighbors);
offset++;
for (int i = 0; i < neighborCount; i++)
{
frame.Write(offset, neighbors[i].shortAdr);
offset += 2;
frame.Write(offset, neighbors[i].lqi);
offset += 1;
}
return true;
}
protected override void EncodePayload(Frame frame)
{
int i = gtsLength | (gtsDirection << 4) | (characteristicsType << 5);
frame.Write(0, (byte)i);
}
protected override void EncodePayload(Frame frame)
{
frame.Write(0, panId);
frame.Write(2, coordinatorShortAddr);
frame.Write(4, channel);
frame.Write(5, shortAddr);
if (channelPagePresent)
frame.Write(7, channelPage);
else
frame.DeleteFromBack(1);
}
protected override void EncodePayload(Frame frame)
{
frame.Write(0, (byte)reason);
}
protected override void EncodePayload(Frame frame)
{
frame.Write(0, shortAddr);
frame.Write(2, (byte)status);
}
protected override void EncodePayload(Frame frame)
{
frame.Write(0, capabilities.ToByte());
}
