Hello. I am using the Matek H743 Wing V3 flight controller with ArduPilot version 4.7.0. I use an ELRS WiFi backpack and connect wirelessly via UDP to monitor my aircraft’s telemetry on my computer while in flight. However, today the UDP connection failed completely. Checks performed via CMD and PowerShell revealed that Mission Planner was already listening on the port I intended to use and attempting to connect to it; consequently, an error occurred when I tried to connect to that same UDP port. Error message:
Only one usage of each socket address (protocol/network address/port) is normally permitted. Location: System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress) Location: System.Net.Sockets.Socket.Bind(EndPoint localEP) Location: MissionPlanner.Comms.UdpSerial.Open() in C:\Users\mich1\Desktop\CubePilot\MissionPlanner\ExtLibs\Comms\CommsUdpSerial.cs: line 130 Location: MissionPlanner.MAVLinkInterface.OpenBg(IProgressReporterDialogue PRsender, Boolean getparams) in C:\Users\mich1\Desktop\CubePilot\MissionPlanner\ExtLibs\ArduPilot\Mavlink\MAVLinkInterface.cs: line 886 Location: MissionPlanner.Controls.ProgressReporterDialogue.RunBackgroundOperation(Object o) in C:\Users\mich1\Desktop\CubePilot\MissionPlanner\ExtLibs\Controls\ProgressReporterDialogue.cs: line 111
Reinstalling Mission Planner from scratch three times (using both ZIP and MSI installers) did not resolve the issue. Prior to today, I could easily connect via WiFi to my RadioMaster Boxer ELRS transmitter using UDP and view telemetry from my aircraft—even when it was 10 km away—on my computer. How can I fix this? Many thanks. Best regards.