remote software CW keyer with ASIO side tone

Hi folks,

I'm just working on a remote cw keyer for my Flex-6300. The cw key is attached to the PC via USB-RS-232. The side tone is generated via low latency ASIO audio. This already works just fine.

Based on the information given from KE5DTO and NQ6N here

https://community.flexradio.com/flexradio/topics/is-keying-possible-via-the-api-or-cat-serial-rts-or...

I want to key the radio via network.

I have already download the FlexAPI v3.1.8. I was able to connect to the radio according the example ComPortPTT from the FlexAPI. This is my Forms1.cs:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using Flex.Smoothlake.FlexLib;

using Flex.UiWpfFramework.Utils;

namespace Iambic2

{

    public partial class Form1 : Form

    {

        private Radio _radio;

        public Form1()

        {

            InitializeComponent();

            WindowPlacement.SetPlacement(this.Handle, Properties.Settings.Default.WindowPlacement);

            API.ProgramName = "ComPortPTT";

            API.RadioAdded += new API.RadioAddedEventHandler(API_RadioAdded);

            API.RadioRemoved += new API.RadioRemovedEventHandler(API_RadioRemoved);

            API.Init();

        }

        void API_RadioAdded(Radio radio)

        {

            if (_radio == null)

            {

                _radio = radio;

                _radio.Connect();

                //UpdateMox();

                //_radio.CWPitch = 650;

            }

        }

        void API_RadioRemoved(Radio radio)

        {

            if (radio == _radio)

                _radio = null;

        }

        public void RadioTriggerOn(double timeStamp)

        {

            //Console.WriteLine("On - " + ((int)Math.Round(timeStamp)).ToString("X4"));

            _radio.CWPTT(true, ((int)Math.Round(timeStamp)).ToString("X4"));

            _radio.CWKey(true, ((int)Math.Round(timeStamp)).ToString("X4"));

        }

        public void RadioTriggerOff(double timeStamp)

        {

            //Console.WriteLine("Off - " + ((int)Math.Round(timeStamp)).ToString("X4"));

            _radio.CWKey(false, ((int)Math.Round(timeStamp)).ToString("X4"));

            _radio.CWPTT(false, ((int)Math.Round(timeStamp)).ToString("X4"));

        }

    }

}

RadioTriggerOn() / Off() are called at the according time instant of the side tone. timeStamp is counted in milliseconds with rollover at 2^16.

With this programm the radio does not send out any HF. I can see no reaction from the radio except that the normal CW key plugged into the radio itself does no work anymore after I have pressed the RS232 CW key a least one time (no HF is send, side tone works as usual). I have to reboot the radio to bring it back to normal operation.

I have noted that CWKey() is specially designed for the Maestro. So I have changed line 1763 of Radio.cs as follows:

            if (true) //(API.ProgramName == "SmartSDR-Maestro")

What changes are necessary to make this program work?