MovingBase.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 MissionPlanner.Comms;
using System.Globalization;
using MissionPlanner.Controls;
using MissionPlanner.Utilities;
using System.IO;

namespace MissionPlanner
{
    public partial class MovingBase : Form
    {
        System.Threading.Thread t12;
        static bool threadrun = false;
        static MovingBase Instance;
        static internal SerialPort comPort = new SerialPort();
        static internal PointLatLngAlt lastgotolocation = new PointLatLngAlt(0, 0, 0, "Goto last");
        static internal PointLatLngAlt gotolocation = new PointLatLngAlt(0, 0, 0, "Goto");
        static internal int intalt = 100;
        static float updaterate = 0.5f;
        static bool updaterallypnt = false;

        public MovingBase()
        {
            Instance = this;

            InitializeComponent();

            CMB_serialport.DataSource = SerialPort.GetPortNames();

            CMB_updaterate.SelectedItem = updaterate;

            CHK_updateRallyPnt.Checked = updaterallypnt;

            if (threadrun)
            {
                BUT_connect.Text = "Stop";
                CMB_baudrate.Text = comPort.BaudRate.ToString();
                CMB_serialport.Text = comPort.PortName;
                CMB_updaterate.Text = updaterate.ToString();
            }

            MissionPlanner.Utilities.Tracking.AddPage(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.ToString(), System.Reflection.MethodBase.GetCurrentMethod().Name);
        }

        private void BUT_connect_Click(object sender, EventArgs e)
        {
            if (comPort.IsOpen)
            {
                threadrun = false;
                comPort.Close();
                BUT_connect.Text = "Connect";
                MainV2.comPort.MAV.cs.MovingBase = null;
            }
            else
            {
                try
                {
                    comPort.PortName = CMB_serialport.Text;
                }
                catch { CustomMessageBox.Show("Invalid PortName", "Error"); return; }
                try {
                comPort.BaudRate = int.Parse(CMB_baudrate.Text);
                }
                catch { CustomMessageBox.Show("Invalid BaudRate", "Error"); return; }
                try {
                comPort.Open();
                }
                catch (Exception ex) { CustomMessageBox.Show("Error Connecting\nif using com0com please rename the ports to COM??\n" + ex.ToString(), "Error"); return; }

                t12 = new System.Threading.Thread(new System.Threading.ThreadStart(mainloop))
                {
                    IsBackground = true,
                    Name = "Nmea base Input"
                };
                t12.Start();

                BUT_connect.Text = "Stop";
            }
        }

        void mainloop()
        {
            DateTime nextsend = DateTime.Now;

            DateTime nextrallypntupdate = DateTime.Now;

            StreamWriter sw = new StreamWriter(File.OpenWrite("MovingBase.txt"));

            threadrun = true;
            while (threadrun)
            {
                try
                {
                    string line = comPort.ReadLine();

                    sw.WriteLine(line);

                    //string line = string.Format("$GP{0},{1:HHmmss},{2},{3},{4},{5},{6},{7},{8},{9},{10},{11},{12},{13},", "GGA", DateTime.Now.ToUniversalTime(), Math.Abs(lat * 100), MainV2.comPort.MAV.cs.lat < 0 ? "S" : "N", Math.Abs(lng * 100), MainV2.comPort.MAV.cs.lng < 0 ? "W" : "E", MainV2.comPort.MAV.cs.gpsstatus, MainV2.comPort.MAV.cs.satcount, MainV2.comPort.MAV.cs.gpshdop, MainV2.comPort.MAV.cs.alt, "M", 0, "M", "");
                    if (line.StartsWith("$GPGGA")) // 
                    {
                        string[] items = line.Trim().Split(',','*');

                        if (items[15] != GetChecksum(line.Trim()))
                        {
                            Console.WriteLine("Bad Nmea line " + items[15] + " vs " + GetChecksum(line.Trim()));
                            continue;
                        }

                        if (items[6] == "0")
                        {
                            Console.WriteLine("No Fix");
                            continue;
                        }

                        gotolocation.Lat = double.Parse(items[2], CultureInfo.InvariantCulture) / 100.0;

                        gotolocation.Lat = (int)gotolocation.Lat + ((gotolocation.Lat - (int)gotolocation.Lat) / 0.60);

                        if (items[3] == "S")
                            gotolocation.Lat *= -1;

                        gotolocation.Lng = double.Parse(items[4], CultureInfo.InvariantCulture) / 100.0;

                        gotolocation.Lng = (int)gotolocation.Lng + ((gotolocation.Lng - (int)gotolocation.Lng) / 0.60);

                        if (items[5] == "W")
                            gotolocation.Lng *= -1;

                        gotolocation.Alt = double.Parse(items[9], CultureInfo.InvariantCulture);

                        gotolocation.Tag = "Sats "+ items[7] + " hdop " + items[8] ;

                    }


                    if (DateTime.Now > nextsend && gotolocation.Lat != 0 && gotolocation.Lng != 0 && gotolocation.Alt != 0) // 200 * 10 = 2 sec /// lastgotolocation != gotolocation && 
                    {
                        nextsend = DateTime.Now.AddMilliseconds(1000/updaterate);
                        Console.WriteLine("new home wp " +DateTime.Now.ToString("h:MM:ss")+" "+ gotolocation.Lat + " " + gotolocation.Lng + " " +gotolocation.Alt);
                        lastgotolocation = new PointLatLngAlt(gotolocation);

                        Locationwp gotohere = new Locationwp();

                        gotohere.id = (byte)MAVLink.MAV_CMD.WAYPOINT;
                        gotohere.alt = (float)(gotolocation.Alt);
                        gotohere.lat = (gotolocation.Lat);
                        gotohere.lng = (gotolocation.Lng);

                        try
                        {
                            updateLocationLabel(gotohere);
                        }
                        catch { }

                        MainV2.comPort.MAV.cs.MovingBase = gotolocation;

                        // plane only
                        if (updaterallypnt && DateTime.Now > nextrallypntupdate)
                        {
                            nextrallypntupdate = DateTime.Now.AddSeconds(5);
                            try
                            {
                                MainV2.comPort.setRallyPoint(0, new PointLatLngAlt(gotolocation) { Alt = gotolocation.Alt + double.Parse(MainV2.config["TXT_DefaultAlt"].ToString()) }, 0, 0, 0, (byte)(float)MainV2.comPort.MAV.param["RALLY_TOTAL"]);
                            }
                            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                        }
                    }
                }
                catch { System.Threading.Thread.Sleep((int)(1000 / updaterate)); }
            }

            sw.Close();
        }

        private void updateLocationLabel(Locationwp plla)
        {
            if (!Instance.IsDisposed)
            {
                Instance.BeginInvoke((MethodInvoker)delegate
                {
                    Instance.LBL_location.Text = gotolocation.Lat + " " + gotolocation.Lng + " " + gotolocation.Alt + " " + gotolocation.Tag;
                }
           );
            }

        }

        private void SerialOutput_FormClosing(object sender, FormClosingEventArgs e)
        {
        }

        // Calculates the checksum for a sentence
        string GetChecksum(string sentence)
        {
            // Loop through all chars to get a checksum
            int Checksum = 0;
            foreach (char Character in sentence.ToCharArray())
            {
                switch (Character)
                {
                    case '$':
                        // Ignore the dollar sign
                        break;
                    case '*':
                        // Stop processing before the asterisk
                        return Checksum.ToString("X2");
                    default:
                        // Is this the first value for the checksum?
                        if (Checksum == 0)
                        {
                            // Yes. Set the checksum to the value
                            Checksum = Convert.ToByte(Character);
                        }
                        else
                        {
                            // No. XOR the checksum with this character's value
                            Checksum = Checksum ^ Convert.ToByte(Character);
                        }
                        break;
                }
            }
            // Return the checksum formatted as a two-character hexadecimal
            return Checksum.ToString("X2");
        }

        private void CMB_updaterate_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                updaterate = float.Parse(CMB_updaterate.Text.Replace("hz", ""));
            }
            catch { CustomMessageBox.Show("Bad Update Rate", "Error"); }
        }

        private void CHK_updateRallyPnt_CheckedChanged(object sender, EventArgs e)
        {
            updaterallypnt = CHK_updateRallyPnt.Checked;
        }

    }
}