Mavlink sending message and didn’t response message

[heotaein]

I use "Silicon Labs CP210x USB to UART Bridge (COM6)".

/////////////////////////////////////////////////////////////////////////////////////////////////////////
step1. connect Serialport - success
In pixhawk2.1, the default information is displayed. (GPS, etc.)
/////////////////////////////////////////////////////////////////////////////////////////////////////////
public MavLinkSerialPortTransport mavLinkSerialPortTransport = null;
public Ardupilot()
{
mavLinkSerialPortTransport = new MavLinkSerialPortTransport();
mavLinkSerialPortTransport.SerialPortName = SerialPortName;
mavLinkSerialPortTransport.BaudRate = BaudRate;
mavLinkSerialPortTransport.OnPacketReceived += new PacketReceivedDelegate(recvPacket);
mavLinkSerialPortTransport.Initialize();
}

private void recvPacket(object sender, MavLinkNet.MavLinkPacket packet)
{
Console.WriteLine(packet.Message.MessageId);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
step2. Test Sending Message - sucess
But the delegate does not respond. 😭
/////////////////////////////////////////////////////////////////////////////////////////////////////////
public void MissionCount()
{
UasMissionCount uasMissionCount = new UasMissionCount()
{
MissionType = MavMissionType.Mission,
TargetComponent = 1,
TargetSystem = 1,
};
mavLinkSerialPortTransport.SendMessage(uasMissionCount);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
I sent a lot of other messages, but not all of them answered.

[dsuarezv]

There is a sample that uses the library here: https://github.com/dsuarezv/mavlinkclient-cs

I don't have a pixhawk to test the protocol, but some autopilots need a specific sequence of messages to get a response. Try to find information on the specific protocol you are using, or ultimately, write a small proxy with mavlink.net to intercept all the messages and see how ground station or other software talks to the autopilot.

[heotaein]

Thank you for answering.
I would like to know if I use fewer methods to connect using serialport.
For applications that are to be used as other devices, is this method correct?
I don't use UDP Connect.

[heotaein]

#17

https://github.com/amin347/TestMavlink.net
It's made using the "MavlinkNet.dll" file in the URL.
it seems to be a problem with the latest version.