public void Read()
{
// until this boolean is false - read on the serial port
while (READ)
{
try
{
// check if thread is cancelled
if (m_EventStop.WaitOne(0, true))
{
// clean-up operations may be placed here
// ...
// inform main thread that this thread stopped
READ = false;
}
// Reset the timer
if (m_EventResetTimer.WaitOne(0, true))
{
// write "R" to the serial port and the timer should restart.
seriePort.WriteLine("R");
}
// read from port
string message = seriePort.ReadLine();
if (message.EndsWith("\r"))
{
message = message.Substring(0, message.Length - 1);
}
// this is for us! String should be of type @nnLxTmmm[CR+LF]
if (message.StartsWith("@"))
{
// some variables
string raceType = "";
string lane = "";
string time = "";
string timeDec = "";
// get the racetype 00 or 01
raceType = message.Substring(2, 1);
// get the lane L1 or L2
lane = message.Substring(4, 1);
// get the time Txxxxx where xxxx is time in milliseconds, perhaps with a starting '-'
time = message.Substring(6);
// if this is not a negative time, and the length of the string is more than 3 characters
if (!time.StartsWith("-"))
{
// time string contains one digit. 1/1000 of a second
if (time.Length == 1)
{
timeDec = "0.00" + time;
}
// time string contains two digits. 1/100 of a second
if (time.Length == 2)
{
timeDec = "0.0" + time;
}
// time string contains three digits. 1/10 of a second
if (time.Length == 3)
{
timeDec = "0." + time;
}
// one digit to the left of the decimal sign
if (time.Length == 4)
{
timeDec = time.Substring(0, 1) + "." + time.Substring(1);
}
// two digits to the left of the decimal sign
if (time.Length == 5)
{
timeDec = time.Substring(0, 2) + "." + time.Substring(2);
}
// three digits to the left of the decimal sign
if (time.Length == 6)
{
timeDec = time.Substring(0, 3) + "." + time.Substring(3);
}
}
// negative case. Pretty much same as above, though you can only start
// 9.999 seconds early.
if (time.StartsWith("-"))
{
if (time.Length == 2)
{
timeDec = "-0.00" + time.Substring(1);
}
if (time.Length == 3)
{
timeDec = "-0.0" + time.Substring(1);
}
if (time.Length == 4)
{
timeDec = "-0." + time.Substring(1);
}
if (time.Length == 5)
{
timeDec = "-" + time.Substring(1, 1) + "." + time.Substring(2);
}
}
// if the racetype is reaction we output that
if (raceType == "0")
{
if (myTimer != null)
{
myTimer.Invoke(myTimer.mTrackMateCallback, timeDec, Convert.ToInt32(lane), Convert.ToInt32(raceType));
}
}
// rawtime
else
{
// race time
if (myTimer != null)
{
myTimer.Invoke(myTimer.mTrackMateCallback, timeDec, Convert.ToInt32(lane), Convert.ToInt32(raceType));
}
}
}
}
catch (TimeoutException) { }
}
CloseAndClean();
}
