internal static bool IsSetupAP(APDetails ap)
{
if (ap == null)
{
return(false);
}
return(ap == APDetails.SetupSecretAPNew || ap == APDetails.SetupSecretAP || ap == APDetails.SetupOpenAP);
}
/// <summary>
/// Should be called by an application when the home network credentials should be forgotten, e.g. after a reset button is held down.
/// </summary>
public void ResetNetworkCredentials()
{
Debug.Print("Forgetting home wireless network credentials");
wifiNetworks.Clear();
if (EnableWifiSetupNetworks)
{
APDetails.AddSetupAPs(wifiNetworks);
}
SaveData();
WebServer.StopLocalServer();
currentAP = null;
SetLed();
wifi.Interface.Disconnect();
}
private void LoadData()
{
ConfigEWR = ExtendedWeakReference.RecoverOrCreate(typeof(Config), 0, ExtendedWeakReference.c_SurviveBoot | ExtendedWeakReference.c_SurvivePowerdown);
ConfigEWR.Priority = (int)ExtendedWeakReference.PriorityLevel.Critical;
wifiNetworks.Clear();
if (EnableWifiSetupNetworks)
{
APDetails.AddSetupAPs(wifiNetworks);
}
Config config = ConfigEWR.Target as Config;
if (config == null)
{
config = new Config();
config.UniqueID = "";
var random = new Random();
for (int i = 0; i < 20; i++)
{
config.UniqueID += random.Next(10).ToString();
}
ConfigEWR.Target = config;
Debug.Print("Created new configuration in flash");
}
else
{
if (config.APDetails != null)
{
for (var i = 0; i < config.APDetails.Length; i++)
{
wifiNetworks.Insert(i, config.APDetails[i]);
Debug.Print("Loaded WiFi config for SSID " + config.APDetails[i].SSID);
}
}
}
DeviceUniqueID = config.UniqueID;
Debug.Print("Device unique ID is " + DeviceUniqueID);
}
/// <summary>
/// Causes the led to be controlled, abstractly showing the current WiFi status. The screen is not touched if the DoNotControlLed delegate returns true.
/// This method is called internally by the library, but is exposed for use when the conditions for DoNotControlLed stop, i.e. when control is
/// returned to this library from the application.
/// </summary>
public void SetLed()
{
if (led == null)
{
return;
}
if (DoNotControlLed())
{
return;
}
if (currentAP == null)
{
// no suitable AP seen
if (WiFiCredentialsKnown)
{
led.FadeRepeatedly(GT.Color.Blue);
}
else
{
led.FadeRepeatedly(GT.Color.Red);
}
}
else if (APDetails.IsSetupAP(currentAP))
{
if (wifiConnected)
{
// joined setup AP
if (WiFiCredentialsKnown)
{
led.TurnBlue();
}
else
{
led.TurnRed();
}
}
else
{
// trying to join setup AP
if (WiFiCredentialsKnown)
{
led.BlinkRepeatedly(GT.Color.Blue, blinkTime, GT.Color.Black, blinkTime);
}
else
{
led.BlinkRepeatedly(GT.Color.Red, blinkTime, GT.Color.Black, blinkTime);
}
}
}
else
{
if (wifiConnected)
{
// joined a real AP
led.TurnGreen();
}
else
{
// trying to join a real AP
led.BlinkRepeatedly(GT.Color.Green, blinkTime, GT.Color.Black, blinkTime);
}
}
}
/// <summary>
/// Causes the screen to be redrawn, showing the current WiFi status. The screen is not touched if the DoNotControlScreen delegate returns true.
/// This method is called internally by the library, but is exposed for use when the conditions for DoNotControlScreen stop, i.e. when control is
/// returned to this library from the application.
/// </summary>
public void SetScreen()
{
if (display == null)
{
return;
}
if (DoNotControlScreen())
{
return;
}
//GT.Color border = GT.Color.Green; // can press button
string text1 = "", text2 = "", text3 = "";
//Bitmap image;
if (currentAP == null)
{
// no suitable AP seen
if (WiFiCredentialsKnown)
{
//image = uiScanningForHomeAP;
text1 = "Searching for";
text2 = "home AP";
}
else
{
if (EnableWifiSetupNetworks)
{
//image = uiScanningForSetupAP;
text1 = "Searching for";
text2 = "setup AP";
}
else
{
text1 = "Waiting for";
text2 = "credentials";
}
}
}
else if (APDetails.IsSetupAP(currentAP))
{
if (wifiConnected)
{
// joined setup AP
if (WiFiCredentialsKnown)
{
//image = uiReceivedHomeAPDetails;
text1 = "Got credentials";
text2 = "for AP:";
text3 = ((APDetails)wifiNetworks[0]).SSID;
}
else
{
//image = uiJoinedSetupAP;
text1 = "Joined";
text2 = "setup AP";
}
}
else
{
//image = uiJoiningSetupNetwork;
text1 = "Joining";
text2 = "setup AP";
//border = GT.Color.Gray;
}
}
else
{
if (wifiConnected)
{
//image = uiJoinedHomeAP;
// joined a real AP
text1 = "Joined AP:";
text2 = currentAP.SSID;
}
else
{
// trying to join a real AP
//image = uiJoiningHomeNetwork;
text1 = "Joining AP:";
text2 = currentAP.SSID;
//border = GT.Color.Gray;
}
}
//oledDisplay.SimpleGraphics.DisplayRectangle(border, 10, GT.Color.Black, 0, 0, 128, 128);
display.SimpleGraphics.Clear();
display.SimpleGraphics.DisplayText(text1, font, GT.Color.White, 20, 20);
if (text2 != "")
{
display.SimpleGraphics.DisplayText(text2, font, GT.Color.White, 20, 50);
}
if (text3 != "")
{
display.SimpleGraphics.DisplayText(text3, font, GT.Color.White, 20, 80);
}
//oledDisplay.SimpleGraphics.DisplayImage(image, 0, 0);
display.SimpleGraphics.Redraw();
}
void wifiTimer_Tick(GT.Timer timer)
{
Debug.Print("wifiTimer start - currentAP " + (currentAP != null ? currentAP.SSID : "(null)") + " wifiUp " + wifiConnected + (wifiConnected ? " IP " + wifi.Interface.NetworkInterface.IPAddress : ""));
if (sp != null)
{
var spMessage = BroadcastMessageWithNewline;
sp.Write(spMessage, 0, spMessage.Length);
}
if (SkipWifiTimer())
{
Debug.Print("aborting wifitimer tick since SkipWifiTimer delegate is true");
return;
}
if (wifiConnected && currentAP == null)
{
Debug.Print("ERROR: wifi is up but current AP is null! Disconnecting.");
currentAP = null;
wifiConnected = false;
SetLed();
SetScreen();
wifi.Interface.Disconnect();
WebServer.StopLocalServer();
return;
}
if (currentAP != null && !wifiConnected)
{
wifiUpTime++;
if (wifiUpTime == wifiUpTimeout)
{
Debug.Print("WARN: starting wifi for " + currentAP.SSID + " timeout - resetting currentAP");
currentAP = null;
wifiConnected = false;
SetLed();
SetScreen();
wifi.Interface.Disconnect();
WebServer.StopLocalServer();
return;
}
}
if (wifiConnected && currentAP != null && APDetails.IsSetupAP(currentAP))
{
if (GT.Timer.GetMachineTime() - joinTime > maxTimeOnSetupNetwork)
{
Debug.Print("Disconnecting from setup AP due to timeout (setup should not take this long)");
currentAP = null;
wifiConnected = false;
SetLed();
SetScreen();
wifi.Interface.Disconnect();
WebServer.StopLocalServer();
return;
}
else
{
// only sending unsolicited beacons when we're not on the home network
Debug.Print("Sending unsolicited UDP beacon since we're on a setup network");
SendUDPBroadcast(BeaconPort);
}
}
if (wifiConnected && currentAP != null)
{
if (!WebServer.IsRunning())
{
WebServer.StartLocalServer(wifi.Interface.NetworkInterface.IPAddress, 80);
}
}
// skip scanning when connected since it fails
if (currentAP == null)
{
try
{
var scan = wifi.Interface.Scan();
Thread.Sleep(1);
foreach (var ap in scan)
{
Debug.Print("Scanned AP " + ap.SSID + " rssi " + ap.RSSI);
}
if (scan != null)
{
foreach (APDetails knownAP in wifiNetworks)
{
// APs are in priority order, so break once we see the current ap
if (knownAP.Matches(currentAP))
{
break;
}
WiFiNetworkInfo joinAP = null;
foreach (var scanAP in scan)
{
if (!knownAP.Matches(scanAP))
{
continue;
}
if (joinAP == null)
{
joinAP = scanAP;
}
if (joinAP.RSSI > scanAP.RSSI)
{
joinAP = scanAP; // lower RSSI is better
}
}
if (joinAP == null)
{
continue;
}
try
{
if (currentAP != null)
{
Debug.Print("Disconnecting from WiFi network " + currentAP + " to join " + joinAP.SSID);
wifi.Interface.Disconnect();
}
//// stop pictimeout and any streaming since wifi join operation hogs processor
//picTimeout.Stop();
//camera.StopStreamingBitmaps();
joinTime = GT.Timer.GetMachineTime();
Debug.Print("Joining WiFi network " + joinAP.SSID + " rssi " + joinAP.RSSI);
//wifi.Interface.();
currentAP = joinAP;
SetLed();
SetScreen();
wifi.Interface.Join(joinAP, knownAP.Key);
//Debug.Print("Joined WiFi network " + scanAP.SSID);
wifiUpTime = 0;
break;
}
catch
{
Debug.Print("Error joining wifi network: " + joinAP.SSID);
wifi.Interface.Disconnect();
timer.Stop();
timer.Start();
currentAP = null;
SetLed();
SetScreen();
break;
}
}
}
}
catch (GHI.Premium.Net.NetworkInterfaceExtensionException wex)
{
wifi.Interface.Disconnect();
// restart the timer to prevent it immediately firing again
timer.Stop();
timer.Start();
Debug.Print("Error scanning wifi networks: " + wex);
currentAP = null;
setLedError();
setScreenError();
}
}
Debug.Print("wifiTimer end - currentAP " + (currentAP != null ? currentAP.SSID : "(null)") + " wifiUp " + wifiConnected);
}
internal static bool IsSetupAP(APDetails ap)
{
if (ap == null) return false;
return ap == APDetails.SetupSecretAPNew || ap == APDetails.SetupSecretAP || ap == APDetails.SetupOpenAP;
}
