winzer/elwig
2
1
Fork 0
Code Issues 8 Pull Requests Actions Releases 60 Activity

[#71] Weighing: Fix reconnection behaviour when COM port is connected/disconnected
Some checks failed
Test / Run tests (push) Failing after 2m47s
Details

Browse Source
This commit is contained in:
Lorenz Stechauner
2026-01-03 16:22:37 +01:00
parent c45800099c
commit d2bc2f894f
7 changed files with 112 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Elwig/Helpers/SerialPortWatcher.cs
View File

@@ -17,28 +17,34 @@ namespace Elwig.Helpers {
public SerialPortWatcher() {
_knownPorts = SerialPort.GetPortNames();
_deviceArrivalWatcher = new ManagementEventWatcher("SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2");
_deviceArrivalWatcher.EventArrived += (s, e) => OnDeviceArrived();
_deviceArrivalWatcher.EventArrived += OnDeviceArrived;
_deviceRemovalWatcher = new ManagementEventWatcher("SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 3");
_deviceRemovalWatcher.EventArrived += (s, e) => OnDeviceRemoved();
_deviceRemovalWatcher.EventArrived += OnDeviceRemoved;
_deviceArrivalWatcher.Start();
_deviceRemovalWatcher.Start();
}
private void OnDeviceArrived() {
string[] currentPorts = SerialPort.GetPortNames();
var newPorts = currentPorts.Except(_knownPorts).ToArray();
foreach (var port in newPorts)
SerialPortConnected?.Invoke(this, port);
_knownPorts = currentPorts;
private void OnDeviceArrived(object sender, EventArrivedEventArgs evt) {
App.MainDispatcher.Invoke(() => {
// "synchronized"
string[] currentPorts = SerialPort.GetPortNames();
var newPorts = currentPorts.Except(_knownPorts).ToArray();
foreach (var port in newPorts)
SerialPortConnected?.Invoke(this, port);
_knownPorts = currentPorts;
});
}
private void OnDeviceRemoved() {
string[] currentPorts = SerialPort.GetPortNames();
var removedPorts = _knownPorts.Except(currentPorts).ToArray();
foreach (var port in removedPorts)
SerialPortDisconnected?.Invoke(this, port);
_knownPorts = currentPorts;
private void OnDeviceRemoved(object sender, EventArrivedEventArgs evt) {
App.MainDispatcher.Invoke(() => {
// "synchronized"
string[] currentPorts = SerialPort.GetPortNames();
var removedPorts = _knownPorts.Except(currentPorts).ToArray();
foreach (var port in removedPorts)
SerialPortDisconnected?.Invoke(this, port);
_knownPorts = currentPorts;
});
}
public void Dispose() {