I’m trying to debug why the event NetworkUp never fires on the WiFi RS21 Gadgeteer module and I’ve distilled it down to a very simple code listing:
using Microsoft.SPOT;
using Gadgeteer.Networking;
using GT = Gadgeteer;
using GTM = Gadgeteer.Modules;
namespace NetworkUpTest
{
public partial class Program
{
void ProgramStarted()
{
wifi_RS21.UseDHCP();
wifi_RS21.NetworkUp += wifi_RS21_NetworkUp;
wifi_RS21.NetworkDown += wifi_RS21_NetworkDown;
var scans = wifi_RS21.Interface.Scan("LLOYDREGANS");
if (scans != null && scans.Length > 0)
{
Debug.Print("Joining " + scans[0].SSID);
wifi_RS21.Interface.Join(scans[0], "**********");
}
var giveUpWaitingForTheNetworkUpEvent = new GT.Timer(300000, GT.Timer.BehaviorType.RunOnce);
giveUpWaitingForTheNetworkUpEvent.Tick += giveUpWaitingForTheNetworkUpEvent_Tick;
giveUpWaitingForTheNetworkUpEvent.Start();
}
void wifi_RS21_NetworkUp(GTM.Module.NetworkModule sender, GTM.Module.NetworkModule.NetworkState state)
{
Debug.Print("NetworkUp");
}
void wifi_RS21_NetworkDown(GTM.Module.NetworkModule sender, GTM.Module.NetworkModule.NetworkState state)
{
Debug.Print("NetworkDown");
}
void giveUpWaitingForTheNetworkUpEvent_Tick(GT.Timer timer)
{
Debug.Print("Give up waiting for the NetworkUp event and try requesting the router homepage");
var request = HttpHelper.CreateHttpGetRequest("http://192.168.1.1/");
request.ResponseReceived += request_ResponseReceived;
request.SendRequest();
}
void request_ResponseReceived(HttpRequest sender, HttpResponse response)
{
Debug.Print("Response received. response.Text.Length = " + response.Text.Length);
}
}
}
Here’s the listing from the output window when the program runs (minus the thread exited reports):
Given that the network is demonstrably up, why is “NetworkDown” the only event that fires from the WiFi RS21 module?