/// <summary>
/// Splits and returns the requested part of an extended message. Throws an exception if this is not an extended message.
/// </summary>
/// <param name="whichPart">The desired part of the message</param>
private byte[] splitExtMessage(extMsgParts whichPart)
{
if (!isExtended())
{
throw new ANT_Exception("Response is not an extended message");
}
byte[] dataPayload;
byte[] deviceID;
// Legacy extended message
// The "extended" part of this message is the 4-byte channel ID of the device that we recieved this message from.
// This event is only available on the AT3
if (responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_BROADCAST_DATA_0x5D ||
responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_ACKNOWLEDGED_DATA_0x5E ||
responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_BURST_DATA_0x5F)
{
deviceID = messageContents.Skip(1).Take(4).ToArray(); //Skip channel byte
dataPayload = messageContents.Skip(5).Take(8).ToArray(); //Skip channel byte and 4 bytes of id parameters
}
// "Flag" extended message. The 4-byte channel ID is included if the flag byte includes 0x80
else if (responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.BROADCAST_DATA_0x4E ||
responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.ACKNOWLEDGED_DATA_0x4F ||
responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.BURST_DATA_0x50)
{
dataPayload = messageContents.Skip(1).Take(8).ToArray(); //Skip channel byte
if ((messageContents[9] & 0x80) == 0) // Check flag byte
{
throw new ANT_Exception("Response does not contain a channel ID");
}
deviceID = messageContents.Skip(10).Take(4).ToArray(); //Skip channel byte, 8 bytes of data, and flag byte
}
else
{
throw new ANT_Exception("Response is not an extended message");
}
switch (whichPart)
{
case extMsgParts.DataPayload:
return(dataPayload);
case extMsgParts.DeviceID:
return(deviceID);
default:
throw new ANT_Exception("Invalid extMsgPart");
}
}
/// <summary>
/// Splits and returns the requested part of an extended message. Throws an exception if this is not an extended message.
/// </summary>
/// <param name="whichPart">The desired part of the message</param>
private byte[] splitExtMessage(extMsgParts whichPart)
{
if (!isExtended())
throw new ANT_Exception("Response is not an extended message");
byte[] dataPayload;
byte[] deviceID;
// Legacy extended message
// The "extended" part of this message is the 4-byte channel ID of the device that we recieved this message from.
// This event is only available on the AT3
if (responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_BROADCAST_DATA_0x5D
|| responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_ACKNOWLEDGED_DATA_0x5E
|| responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.EXT_BURST_DATA_0x5F)
{
deviceID = messageContents.Skip(1).Take(4).ToArray(); //Skip channel byte
dataPayload = messageContents.Skip(5).Take(8).ToArray(); //Skip channel byte and 4 bytes of id parameters
}
// "Flag" extended message. The 4-byte channel ID is included if the flag byte includes 0x80
else if (responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.BROADCAST_DATA_0x4E
|| responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.ACKNOWLEDGED_DATA_0x4F
|| responseID == (byte)ANT_ReferenceLibrary.ANTMessageID.BURST_DATA_0x50)
{
dataPayload = messageContents.Skip(1).Take(8).ToArray(); //Skip channel byte
if ((messageContents[9] & 0x80) == 0) // Check flag byte
throw new ANT_Exception("Response does not contain a channel ID");
deviceID = messageContents.Skip(10).Take(4).ToArray(); //Skip channel byte, 8 bytes of data, and flag byte
}
else
throw new ANT_Exception("Response is not an extended message");
switch (whichPart)
{
case extMsgParts.DataPayload:
return dataPayload;
case extMsgParts.DeviceID:
return deviceID;
default:
throw new ANT_Exception("Invalid extMsgPart");
}
}
