recieve data from cRIO

[byteit101]

Thanks! now we can see something, it looks like ?M? for each packet, and changes to variations of that, ?p? ?r? ??? etc... changing the encoding changes the ? to other chars, but it looks weird (wiresharks verifies that our custom packet works, and looks normal there)

[EHaskins]

Originally Posted by byteit101

Thanks! now we can see something, it looks like ?M? for each packet, and changes to variations of that, ?p? ?r? ??? etc... changing the encoding changes the ? to other chars, but it looks weird (wiresharks verifies that our custom packet works, and looks normal there)

If you're just trying to get the printed strings, you'll need to do some data processing. Here is some code which should work, and I'm leaving it in VB.net just to irritate you C# bigots.

        Dim reader As New BinaryReader(New MemoryStream(data))

        reader.ReadBytes(26) 'Skip the automatically sent data (team number, battery, DS in/outs, etc.)

        SequenceNumber = reader.ReadByte()

        Dim printedString = New String(Text.Encoding.ASCII.GetChars(reader.ReadBytes(reader.EReadUInt32())))
        Me.PrintedString.Add(printedString)
        Dim errorString = New String(Text.Encoding.ASCII.GetChars(reader.ReadBytes(reader.EReadUInt32())))
        Me.ErrorStrings.Add(errorString)

        Dim dataSize = reader.EReadUInt32()
        Dim userData As Byte() = reader.ReadBytes(dataSize)

BinaryReader.EReadUInt32 is an extension method on BinaryReader since I had issues reader UInt32s from the robot. Here is the extension methods file.

Imports System.IO
Imports System.ComponentModel
Imports System.Collections.ObjectModel
Imports System.Runtime.CompilerServices

Public Module BinaryReaderExtensions
    <Extension()> _
    Public Function EReadUInt32(ByVal reader As BinaryReader) As UInt32
        Dim bytes = reader.ReadBytes(4)
        Return bytes(0) * 255 ^ 3 + bytes(1) * 255 ^ 2 + bytes(2) * 255 ^ 1 + bytes(3)
    End Function

    <Extension()> _
    Public Function EReadUInt16(ByVal reader As BinaryReader) As UInt16
        Dim bytes = reader.ReadBytes(2)
        Return bytes(0) * 255 ^ 1 + bytes(1)
    End Function
End Module

[byteit101]

Thanks, but i figured it out:
(in C#.net just to irritate you VB bigot)

buffer= client.Receive...
string endresult = "";
foreach (byte databit in buffer)
{
    endresult+=((buffer==0)?"":((char)databit).ToString());//I love () to make sure thigs execute as i want (as well as ; semicolins;)
} 
textBox1.Text+="\n"+endresult;

the problem is it was sending something like this:
?hs\0546d\0jos\0MYDATAHERE\0jsfjnn\0
and it cut off after the \0 (or null (buffer = 0) (Nothing for you VB bigot))
i just had to set a breakpoint, see the data, and realize what was happening (the string was being chopped up!);

[virtuald]

Something very useful for feedback is the ability to write to the LCD of your DriverStation: http://thinktank.wpi.edu/article/144

[byteit101]

Originally Posted by virtuald

Something very useful for feedback is the ability to write to the LCD of your DriverStation: http://thinktank.wpi.edu/article/144

but can you provide moving green and pink targets on the screen of it, while at the same time using a "taco-meter" (a meter looking like a taco, don't ask) to display the speed of another thing, a distance to target bar, and a timer for teleop and auto on the LCD? (we think not. plus, we have our dashboard working)

[virtuald]

All that is great, as long as you have a laptop around.