public EchoTester()
{
mSerial = null;
mTest = null;
mResults = new TestLog();
mLog = new FileLog("results.log");
mResults.setOutput(mLog);
mLog.logType("SYSTEM", "System started");
}
public void setSerial(SerialPort _port)
{
SerialPort old = mSerial;
mSerial = _port;
if (old != mSerial)
{
if (old != null)
{
old.close();
}
if (mSerial != null)
{
mSerial.open();
mLog.logType("SYSTEM", "Serial configuration: " + mSerial.ToString());
}
}
}
public override TestResult test(SerialPort _port)
{
char character = (char) mRandom.Next(255);
String toSend = new String(character, 1);
_port.send(toSend);
DateTime timeout = DateTime.Now + TimeSpan.FromMilliseconds(100);
bool timedout = false;
String detail = "";
while (!_port.dataWaiting() && !timedout)
{
if (DateTime.Now > timeout)
{
timedout = true;
}
}
String response = "";
bool success = false;
if (!timedout)
{
response = _port.recvAmount(1);
success = (response != toSend);
if (success)
{
detail = "valid echo";
}
else
{
detail = "invalid echo";
}
}
else
{
detail = "timed out";
}
return new TestResult(toSend, response, success, detail);
}
public override TestResult test(SerialPort _port)
{
bool success = false;
char marker = '#';
char sending = (char) mRandom.Next(254);
String toSend = new String(marker, 1) + new String(sending, 1);
String expected = new String(marker, 1) + new String((char)(sending + 1), 1);
_port.send(toSend);
DateTime timeout = DateTime.Now + TimeSpan.FromMilliseconds(100);
bool timedout = false;
bool lockedOn = false;
String received = "";
while (received.Length < 2 && !timedout)
{
while (!_port.dataWaiting() && !timedout)
{
if (DateTime.Now > timeout)
{
timedout = true;
}
}
if (!timedout)
{
String rx = _port.recvAmount(1);
if (!lockedOn && rx[0] == marker)
{
received = "#";
lockedOn = true;
}
else if (lockedOn)
{
received += rx;
}
}
}
String detail = "";
if (timedout)
{
received = "";
detail = lockedOn ? "synchronised but timed out" : "failed to synchronise and timed out";
}
else
{
success = (received == expected);
if (success)
{
detail = "synchronised with correct response";
}
else
{
detail = "synchronised but incorrect response";
}
}
return new TestResult(toSend, received, success, detail);
}
public abstract TestResult test(SerialPort _port);