// Responds to USB PnP (Plug and Play) devices when they are plugged into the computer, unplugged from the computer, or modified
private void SerialInterface_USBPnPDeviceChanged(object sender, EventArrivedEventArgs e)
{
Console.WriteLine("USB PnP device changed");
//Console.WriteLine(((ManagementBaseObject)(((EventArrivedEventArgs)e).Context))["TargetInstance"].ToString());
ManagementBaseObject device = (ManagementBaseObject)e.NewEvent["TargetInstance"]; // Is this right?
string wclass = e.NewEvent.SystemProperties["__Class"].Value.ToString();
string port = GetPortName(device);
//Console.WriteLine(wclass);
//Console.WriteLine(port);
//Console.WriteLine(Arduino?.Port?.PortName == port);
string wop = string.Empty;
switch (wclass)
{
case "__InstanceModificationEvent":
wop = "modified";
break;
case "__InstanceCreationEvent":
wop = "created";
break;
case "__InstanceDeletionEvent":
wop = "deleted";
break;
default:
wop = "error";
break;
}
if (Arduino?.Port?.PortName == port) // If the added/removed device is the LCA Arduino in use
{
Console.WriteLine("The LCA arduino device on port {0} that you were using was {1}.", port, wop);
if (wop == "created")
{
throw new InvalidOperationException("Cannot create an arduino device that is already created and in use. ");
}
else if (wop == "deleted")
{
// Handle errors here. Code to stop from writing to port or start writing, or whatever?
// Or are there no errors to handle?
Arduino = null; // This also updates the LCA Arduino list and invokes the event ArduinoChanged
}
}
else if (LCAArduinos.ToList().Exists(a => a?.Port?.PortName == port)) // If the added/removed device was an LCA Arduino not in use
{
Console.WriteLine("An LCA arduino device on port {0} that you were not using was {1}.", port, wop);
if (wop == "deleted")
{
// This part is untested
// Want to remove the other ArduinoBoard object from the list without disturbing the currently in-use Arduino
int remove_index = LCAArduinos.ToList().FindIndex(a => a?.Port?.PortName == port);
int old_arduino_index = _Arduino;
// If this condition is true, Arduino's position in the LCAArduinos list will change after removal:
if (remove_index < old_arduino_index && _Arduino != -1)
{
LCAArduinos.RemoveAt(remove_index);
_Arduino--;
}
}
}
else // The added/removed device was not an LCA Arduino (an LCA Arduino device previously known by the program)
{
Console.WriteLine("A non-LCA-Arduino device on port {0} was {1}.", port, wop);
if (wop == "created" && IsGenuineArduino(device)) // A new arduino device was added!
{
Thread.Sleep(TimeSpan.FromMilliseconds(2000)); // Give it a little time before trying to connect. Want the Arduino to go through its setup routine first.
ActivateArduino(device); // Checks if it is an LCA arduino device in the LCAArduinos list (which it shouldn't be), and adds it to LCAArduinos if it is not
}
}
Console.WriteLine("Done with USB PnP device change.");
}
