private bool StateMachine_ConnectionCheck(StepDefinition currentStep)
{
// it has been long enough, we need to test the connection
if (CurrentConnection?.SendConnectionTest() == true)
{
if (IsConnected)
{
return(StepReturn.RepeatStep);
}
IsConnected = true;
RunConnectionUpdate();
}
else
{
if (IsConnected)
{
IsConnected = false;
RunConnectionUpdate();
}
if (TargetMode != ConnectionMode.PersistentPort)
{
currentStep.SkipDelayTime = true;
MachineFunctions.JumpToFirst(currentStep);
}
else
{
// see if the port is still listed in the registry
if (ComPortInfo.GetDescriptions().FirstOrDefault(x => x.Port == PortName) != null)
{
return(StepReturn.RepeatStep);
}
// if the port is no longer there, we know the port was removed from the system
currentStep.SkipDelayTime = true;
MachineFunctions.JumpToFirst(currentStep);
}
return(StepReturn.JumpCommandUsed);
}
// this step should never move on automatically
return(StepReturn.RepeatStep);
}
private bool StateMachine_Searching(StepDefinition currentStep)
{
// get list of current system com ports
var descriptions = ComPortInfo.GetDescriptions();
// clear out any old connections
if (IsOpen)
{
IsConnected = false;
CurrentConnection?.Disconnect();
}
RunConnectionUpdate();
switch (TargetMode)
{
case ConnectionMode.AnyCom:
CurrentConnection = AutoConnectComPort(
descriptions.Select(s => s.Port).ToList(),
ConnectionParameters);
break;
case ConnectionMode.SelectionRule:
CurrentConnection = AutoConnectComPort(
descriptions.Where(TargetSelectionRule).Select(s => s.Port).ToList(),
ConnectionParameters);
break;
case ConnectionMode.PersistentPort:
descriptions = descriptions.Where(TargetSelectionRule).ToList();
if (descriptions.Count == 1)
{
CurrentConnection = ConnectComPort(
descriptions.Select(s => s.Port).First(),
ConnectionParameters);
CurrentConnection?.Connect();
if (CurrentConnection?.IsConnected != true)
{
CurrentConnection?.Disconnect();
CurrentConnection = null;
}
}
else if (descriptions.Count > 1)
{
MachineFunctions.JumpToLast(currentStep);
return(StepReturn.JumpCommandUsed);
}
break;
default:
break;
}
// if we didn't open a port, try again
if (!IsOpen)
{
return(StepReturn.RepeatStep);
}
// we opened a port, so update the listeners
ConnectionEventRegister();
RunConnectionUpdate();
// move to the next step
return(StepReturn.ContinueToNext);
}