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NoxiaZ

Member Since 01 Aug 2012
Offline Last Active Mar 03 2014 07:57 AM

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Write to SD Card

25 February 2014 - 10:58 AM

Hey,

Im using framework 4.3 and trying to write to an SD card, but gives me an error:

An unhandled exception of type 'System.NotSupportedException' occurred in System.IO.dll

on this line:

Stream st = new FileStream(@"SDtest.txt", FileMode.OpenOrCreate);

Whats wrong? :S

Netduino plus 2 Ethernet problem

22 July 2013 - 10:03 AM

[font="calibri, sans-serif;"]Hey, [/font]

[font="calibri, sans-serif;"]I got some big issues with the netduino when I�m unplugging the network cable (To simulate network failure) and after a while (1-2 minutes sometimes more sometimes less) plugging in the network cable again it still won�t connect to the server. [/font]

[font="calibri, sans-serif;"]I have attached 2 files �Debug info.txt� and �Netduino Info.txt�. [/font]

Netduino Info.txt 1.43KB 20 downloads[font="calibri, sans-serif;"] contains all the information about the netduino, firmware and such stuff.[/font]

Debug Info.txt 14.54KB 8 downloads [font="calibri, sans-serif;"] contains information about the program that runs on the netduino and what it is trying to do. The line �Network: False� and �Network: True� is when I unplug the network cable, and plug it in again. You can see that after it write �Network: True� It keeps retrying and get exception with the socket connection.[/font]

private void Connect()    {	    connectThread = null;	    connectThread = new Thread(() =>	    {		    try		    {			    Print("Creating socket");			    Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); <-- This is where it fails???			    Print("Socket created");			    socket.ReceiveTimeout = 10000;			    socket.SendTimeout = 10000;			    //IPAddress ipAddress = HostnameToIPAdress(ServerHostname);			    //if (ipAddress == null)			    IPAddress ipAddress = IPAddress.Parse(ServerIP);			    EndPoint endpoint = new IPEndPoint(ipAddress, ServerPort);			    socket.Connect(endpoint);			    IsConnected = true;			    this.socket = socket;		    }		    catch (Exception e)		    {			    Print("Exception: " + e.ToString());			    IsConnected = false;		    }	    });	    connectThread.Start();	    int timeout = 0;	    while (connectThread.ThreadState != ThreadState.Stopped && connectThread.ThreadState != ThreadState.Aborted)  	  {		    if (timeout > 10)		    {			    Print("Timeout! ABORT!");			    connectThread.Abort();			    IsConnected = false;			    throw new TimeoutException();		    }		    Thread.Sleep(1000);	    }	    connectThread = null;    }

[font="calibri, sans-serif;"]I created everything in a thread for being sure it would n[/font][font="calibri, sans-serif;"]ever hang, it�s my own little timeout function.[/font]

[font="calibri, sans-serif;"]As you can see in the log it start failing at this line[/font][font="calibri, sans-serif;"] �[/font][color=#2b91af;][font="calibri, sans-serif;"]Socket[/color][/font][font="calibri, sans-serif;"] socket = [color=#0000FF;]new[/color][/font] [color=#2b91af;]Socket[/color]([color=#2b91af;]AddressFamily[/color].InterNetwork, [color=#2b91af;]SocketType[/color].Stream, [color=#2b91af;]ProtocolType[/color].Tcp);� [font="calibri, sans-serif;"]and I have no idea how to fix that? � I have tried nearly everything, also using the global variable instead of a local, but no difference.? You can see in the log that it stop printing [/font] �[color=#a31515;]Socket created�[/color][font="calibri, sans-serif;"] but just throw an exception [/font]

[font="calibri, sans-serif;"]Log (View the file for more detailed log information):[/font]

[font="calibri, sans-serif;"]A first chance exception of type 'System.Net.Sockets.SocketException' occurred in Microsoft.SPOT.Net.dll[/font]

[font="calibri, sans-serif;"]06/01/2011 00:06:01 : Exception: System.Net.Sockets.SocketException[/font]

[font="calibri, sans-serif;"]The thread '<No Name>' (0x23) has exited with code 0 (0x0).[/font]

[font="calibri, sans-serif;"]06/01/2011 00:06:01 : Reconnect failure[/font]

[font="calibri, sans-serif;"]06/01/2011 00:06:11 : Creating socket[/font]

[font="calibri, sans-serif;"]A first chance exception of type 'System.Net.Sockets.SocketException' occurred in Microsoft.SPOT.Net.dll[/font]

[font="calibri, sans-serif;"]06/01/2011 00:06:12 : Exception: System.Net.Sockets.SocketException[/font]

[font="calibri, sans-serif;"]The thread '<No Name>' (0x24) has exited with code 0 (0x0).[/font]

[font="calibri, sans-serif;"]I hope you guys can help me solving the problem, because it seems like I�m not the only one seeing this problem. I have been reading a lot about Ethernet problems on the forum, where people have created a watchdog to restart the netduino. But I don�t think that it�s the right way to do it, I want this bug to get fixed instead of creating some code to work around the problem, and I�m sure that it will help a lot of people [/font][font="wingdings;"] [/font]

[font="calibri, sans-serif;"]I can say that the same code is running on Windows and Linux with mono where it is working perfectly. [/font]

[font="calibri, sans-serif;"]Best regards [/font]

[font="calibri, sans-serif;"]Jesper [/font][font="wingdings;"] [/font]

NoxiaZ

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