Android Question [Resolved] How would I read into multiple numeric vars from a btye array?

[DataMiser]

I am receiving a UDP packet which contains mixed numeric values, some are Int, some are float, some are byte.
I did a search and located the byte convertor lib but that does not seem to allow for mixed data types from the byte array, or perhaps I am just overlooking something.
In total the byte array is a bit over 300 bytes, most of the data is 32bit floats but a few are byte and a few are int32 and int16.

So how would I go about getting the data from the incoming UDP packet and getting it into the proper vars?

Any help is appreciated.

 

[DataMiser]

Ok So I tried this.

Sub UDP_PacketArrived (Packet As UDPPacket)
   Dim msg As String
   Dim tData(12) As Byte
   Dim fData() As Float

   bc.ArrayCopy(Packet.Data,244,tData,0, 3)
   fData=bc.FloatsFromBytes(tData)
   Label4.Text=fData.Length
   Label5.Text=Packet.length
   'msg = BytesToString(Packet.Data, Packet.Offset, Packet.Length, "UTF8")
   Label1.Text=fData(0)
   Label2.Text=fData(1)
   Label3.Text=fData(2)
  
   'EditText2.Text = msg
End Sub

Under process globals I have

Dim bc As ByteConverter

I am seeing 3 for the array size as expected. 311 for the packet size as expected.
I am seeing numbers in fdata(0) but not the numbers I expect and 0s in the fdata(1) and fData(2)

I have tried changing the offset up 1 and down 1. The working code I have in VB.Net uses offset 244 but it seems that if I set the offset here to 243,244 or 245 I am never seeing the numbers I expect in the fdata(0) and getting 0s in the other two.

These are the three values I am trying to get at the moment from my vbcode

 Public Speed As Single
 Public Power As Single
 Public Torque As Single

and the code that reads them from the array

Speed = BitConverter.ToSingle(msg, ptr) : ptr += toSingle ' As Single
        Power = BitConverter.ToSingle(msg, ptr) : ptr += toSingle ' As Single
        Torque = BitConverter.ToSingle(msg, ptr) : ptr += toSingle ' As Single

ptr = 244 when it gets to the section of code above

Any idea where I am going wrong here?

 

[stevel05]

Do you know if the packet is BigEndian or LittleEndian? You will need to configure byteconverter appropriately. Coming from a PC it is likely to be LittleEndian, the default for Android is BigEndian.

 

[DataMiser]

Do you know if the packet is BigEndian or LittleEndian? You will need to configure byteconverter appropriately. Coming from a PC it is likely to be LittleEndian, the default for Android is BigEndian.

I set little endian to True as the source uses a Windows system. Still was not getting the correct result.

Looks like I had the wrong idea about the 3rd argument on the array copy method. I had it set to 3 thinking that would copy 3 floats over. Apparently it was getting 3 bytes instead and that obviously wasn't working right. I changed the 3 to 12 and am now seeing the data I expect in those 3 values.