PolarHeartRateMonitor.cs

using UnityEngine;
using System.Collections;
using System.IO;
using System.IO.Ports;
using System.Threading;
using System.Diagnostics;

public class PolarHeartRateMonitor : Device
{
    public bool Passive;

    string _port = "COM3";
    SerialPort _serialPort;
    Thread _thread;
    int _hr;

    void OnEnable()
    {
        UJeli configOptions;
        GameClient.Instance.Config.Devices.Options.TryGetValue(name, out configOptions);

        if (configOptions != null && configOptions.HasChild("port"))
            _port = configOptions["port"].Value;

        if (configOptions != null && configOptions.HasChild("passive"))
            Passive = configOptions["passive"].BoolValue;

        _serialPort = new SerialPort("\\\\.\\" + _port, 9600);
        _serialPort.ReadTimeout = 10000;

        try { _serialPort.Open(); }

        catch (IOException e)
        {
            UnityEngine.Debug.LogError("Failed to start Polar HRM: " + e.Message);
            return;
        }

        _thread = new Thread(new ThreadStart(PollHeartRate));
        _thread.Start();
    }

    void PollHeartRate()
    {
        while (_serialPort.IsOpen)
        {
            string message = "G1\r";
            _serialPort.Write(message.ToCharArray(), 0, message.Length);

            string line = "";
            char c = (char)_serialPort.ReadByte();

            while (c != '\n' && c != '\r')
            {
                line += c;
                c = (char)_serialPort.ReadByte();
            }

            string[] tokens = line.Split(' ');

            _hr = int.Parse(tokens[2]);

            if (!Passive)
            {
                Heart.InjectRate(_hr);
            }
            Heart.InjectPolarRate(_hr);

            Thread.Sleep(100);
        }
    }

    void OnDestroy()
    {
        _serialPort.Close();
    }

    public override UJeli GetDeviceSaveOptions()
    {
        UJeli jeli = new UJeli();
        jeli.AddChild("port", _port);
        jeli.AddChild("passive", Passive);
        return jeli;
    }
}