erich

Without running your code I am not sure what your problem is. You have 2 pieces of code; data recording and data transfer which need to be threaded to run at the same time. My experience is this can memory issues (which I never resolved though I had other stuff going on to). My solution was to start the webserver in 1 thread then started data recording. Not sure whether you will need to close the file to upload data.

I have seen N+ hang on a socket connection and also with DNS. I would try hard coding the target IP address. The other thing to bare in mind is the networking using a lot of memory which the then causes indirect and undefined errors, especially if you have a lot of other stuff going on.

Hi Phil, I haven't seen your issue, mainly because I have get Socket.Connect() hanging problem (My Sockets are using http or udp). We too wanted to use Netduino in a production environment, but this another issues mainly memory related mean we are having to consider our options. Netduino Plus is a nice platform - very compact, lots of features, interesting price But................

Strange, when I run the exact same code in VB it works perfectly. No problems at all.

Netduino Plus rev.B, capabilities:

HalSystemInfo.halVersion:               4.2.0.0
HalSystemInfo.halVendorInfo:            Netduino Plus (v4.2.0.0 RC1) by Secret Labs LLC
HalSystemInfo.oemCode:                  34
HalSystemInfo.modelCode:                177
HalSystemInfo.skuCode:                  4097
HalSystemInfo.moduleSerialNumber:       00000000000000000000000000000000
HalSystemInfo.systemSerialNumber:       0000000000000000
ClrInfo.clrVersion:                     4.2.0.0
ClrInfo.clrVendorInfo:                  Netduino Plus (v4.2.0.0 RC1) by Secret Labs LLC
ClrInfo.targetFrameworkVersion:         4.2.0.0
SolutionReleaseInfo.solutionVersion:    4.2.0.0
SolutionReleaseInfo.solutionVendorInfo: Netduino Plus (v4.2.0.0 RC1) by Secret Labs LLC
SoftwareVersion.BuildDate:              Aug  7 2011
SoftwareVersion.CompilerVersion:        400902
FloatingPoint:                          True
SourceLevelDebugging:                   True
ThreadCreateEx:                         True
LCD.Width:                              0
LCD.Height:                             0
LCD.BitsPerPixel:                       0
AppDomains:                             False
ExceptionFilters:                       True
IncrementalDeployment:                  True
SoftReboot:                             True
Profiling:                              False
ProfilingAllocations:                   False
ProfilingCalls:                         False
IsUnknown:                              False

Try running with MFDeploy instead of the Visual Studio debugger, it gives some more info like:

You can do this by opening C:\Program Files (x86)\Microsoft .NET Micro Framework\v4.2\Tools\MFDeploy.exe, select USB, the device and press F5. Then press the reset button on your netduino to re-run your app.

Hi Stephan,

Just been using MFDeploy - once I reverted to DHCP - I the same as you got except after AutoNegotiate complete -rather than getting NetworkConnection true I get System.Net.Sockets.SocketException. Any ideas why? I am running RC4.2

regards
Eric

I have a C# version without non availability for 500+ iterations but it is interesting. I hoped it might have explained a Socket.Connect() problem I am experiencing.


using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.NetduinoPlus;
using Microsoft.SPOT.Net.NetworkInformation;

namespace NetstabTest
{
public class Program
{
public static void Main()
{
Program p = new Program();
NetworkChange.NetworkAvailabilityChanged += p.NetworkAvailibilty;
p.GetNetworkAccess();

int i = 0;
while (true)
{
Debug.Print("sleeping:" + i++);
Thread.Sleep(500);
}

}

private void NetworkAvailibilty(object sender, NetworkAvailabilityEventArgs e)
{
Debug.Print("Network availibility" + e.IsAvailable);
GetNetworkAccess();
}

public void GetNetworkAccess()
{

NetworkInterface[] nis = NetworkInterface.GetAllNetworkInterfaces();

for (int i = 0; i < nis.Length; i++)
{
NetworkInterface networkInterface = nis[i];

if (networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
{
string m_macAddress = networkInterface.PhysicalAddress[0].ToString();
for (int j = 1; j < networkInterface.PhysicalAddress.Length; ++j)
{
m_macAddress += "-" + networkInterface.PhysicalAddress[j].ToString();
}

string[] m_staticDnsAddresses = new string[] { "0.0.0.0", "0.0.0.0" };
for (int k = 0; k < networkInterface.DnsAddresses.Length; ++k)
{
m_staticDnsAddresses[k] = networkInterface.DnsAddresses[k];
}

Debug.Print(networkInterface.IPAddress);
}
}
}

}
}