3 replies to this topic

[frito]

I'm new to coding for the Netduino and C# for that matter. However one thing I'm trying to get working is being able to get all the packets a server is sending back to my client when I connect. I've managed to get it working on a console C# app, but I am unable to get it working using the micro framework on a netduino plus application.

The code is posted over at http://pastebin.com/MKcP1KYV

The 2 errors I'm getting are:

'System.Text.Encoding' does not contain a definition for 'ASCII' for line
string stringData = Encoding.ASCII.GetString(data, 0, receivedDataLength);

and

'string' does not contain a definition for 'Format' for line
hex += String.Format("{0:x2}", (uint)System.Convert.ToUInt32(tmp.ToString()));

Does anyone know what else I could do? Also I know the "Console.Write...." won't work, I plan to replace it with Debug.Print if I can get past the 2 errors mentioned above.

[Teets]

When an error states "... does not contain a definition for ..." that means it's not declared anywhere. In this case, it means the .NET MF doesn't contain the "System.Text.Encoding.ASCII" static class or the "string.format()" static function.

What environment are you developing in? Your intellisense should have told you this...

I'm new to coding for the Netduino and C# for that matter. However one thing I'm trying to get working is being able to get all the packets a server is sending back to my client when I connect. I've managed to get it working on a console C# app, but I am unable to get it working using the micro framework on a netduino plus application.

The code is posted over at http://pastebin.com/MKcP1KYV

The 2 errors I'm getting are:

'System.Text.Encoding' does not contain a definition for 'ASCII' for line
string stringData = Encoding.ASCII.GetString(data, 0, receivedDataLength);

and

'string' does not contain a definition for 'Format' for line
hex += String.Format("{0:x2}", (uint)System.Convert.ToUInt32(tmp.ToString()));

Does anyone know what else I could do? Also I know the "Console.Write...." won't work, I plan to replace it with Debug.Print if I can get past the 2 errors mentioned above.

[Stefan]

.NETMF only has UTF-8 support for some strange reason (as if GPS/RFID units etc. use UTF-8...). The UTF-8 implementation isn't lightweight so I try not to use it.

For myself, I just use two methods I wrote which convert byte arrays to char arrays and back.

• Bytes2Chars(Input) Converts a byte array to a character array
• Chars2Bytes(Input) Converts a character array to a byte array

http://netmftoolbox....box.NETMF.Tools

Otherwise, you can just use UTF-8 conversion methods in .NETMF

[Bendage]

The first error appears to be coming from your serialPort_DataReceived event. Use this instead... string stringData = objSerialPort.ReadExisting();