/// <summary>Determines if the returned status code indicates that the last operation was executed successfully (then it returns), otherwise a PTControllerException is raised.</summary>
private void ValidateResult(Byte result, bool async)
{
result = Utility.GetUnsignedByteValue(result);
const byte asyncMin = (byte)PTResult.PanLimitHit;
const byte asyncMax = (byte)PTResult.TiltSpeedTriggerHit;
if (async)
{
while (result >= asyncMin && result <= asyncMax)
{
if (result == (byte)PTResult.CableDisconnectDetected)
{
throw new PTControllerException("Asynchronous Cable Disconnection detected");
}
result = _c.GetByte();
result = Utility.GetUnsignedByteValue(result);
}
}
if (result != (byte)PTResult.Ok)
{
const byte errorMin = (byte)PTResult.IllegalCommandArgument;
const byte errorMax = (byte)PTResult.FirmwareVersionTooLow;
if (result >= errorMin && result <= errorMax)
{
PTResult ptResult = (PTResult)result;
throw new PTControllerException(ptResult);
}
else if (result == (Byte)PTCommand.Halt)
{
// NOOP
}
else
{
// There are a few anomalous results I haven't been able to reliably reproduce
// there was one in the 80s, and another around 250
throw new PTControllerException("Non-OK but Unknown Result: " + result);
}
}
}
public PTControllerException(PTResult result) : base("Controller Error: " + result.ToString())
{
Result = result;
}
public PTControllerException(String message) : base(message)
{
Result = PTResult.Ok;
}
