public void ReadFromPrinter(ReadThread readThreadHolder)
{
string dataLastRead = string.Empty;
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
timeSinceLastReadAnything.Restart();
// we want this while loop to be as fast as possible. Don't allow any significant work to happen in here
while (CommunicationState == CommunicationStates.AttemptingToConnect
|| (PrinterIsConnected && serialPort != null && serialPort.IsOpen && !Disconnecting && readThreadHolder.IsCurrentThread()))
{
if (PrinterIsPrinting
&& PrinterIsConnected
&& CommunicationState != CommunicationStates.PrintingFromSd)
{
TryWriteNextLineFromGCodeFile();
}
try
{
while (serialPort != null
&& serialPort.BytesToRead > 0
&& readThreadHolder.IsCurrentThread())
{
lock (locker)
{
string allDataRead = serialPort.ReadExisting();
//Debug.Write("r: " + allDataRead);
dataLastRead += allDataRead.Replace('\r', '\n');
do
{
int returnPosition = dataLastRead.IndexOf('\n');
// Abort if we're AttemptingToConnect, no newline was found in the accumulator string and there's too many non-ascii chars
if (this.communicationState == CommunicationStates.AttemptingToConnect && returnPosition < 0)
{
int totalInvalid = dataLastRead.Count(c => c == '?');
if (totalInvalid > MAX_INVALID_CONNECTION_CHARS)
{
AbortConnectionAttempt("Invalid printer response".Localize(), false);
}
}
if (returnPosition < 0)
{
// there is no return keep getting characters
break;
}
if (dataLastRead.Length > 0)
{
lastLineRead = dataLastRead.Substring(0, returnPosition);
dataLastRead = dataLastRead.Substring(returnPosition + 1);
// process this command
{
StringEventArgs currentEvent = new StringEventArgs(lastLineRead);
if (PrinterIsPrinting)
{
CommunicationUnconditionalFromPrinter.CallEvents(this, new StringEventArgs("{0} [{1:0.000}]\n".FormatWith(lastLineRead, timeSinceStartedPrint.Elapsed.TotalSeconds)));
}
else
{
CommunicationUnconditionalFromPrinter.CallEvents(this, currentEvent);
}
FoundStringEventArgs foundResponse = new FoundStringEventArgs(currentEvent.Data);
ReadLineStartCallBacks.CheckForKeys(foundResponse);
ReadLineContainsCallBacks.CheckForKeys(foundResponse);
if (foundResponse.SendToDelegateFunctions)
{
ReadLine.CallEvents(this, currentEvent);
}
}
// If we've encountered a newline character and we're still in .AttemptingToConnect
if (CommunicationState == CommunicationStates.AttemptingToConnect)
{
// TODO: This is an initial proof of concept for validating the printer response after DTR. More work is
// needed to test this technique across existing hardware and/or edge cases where this simple approach
// (initial line having more than 3 non-ASCII characters) may not be adequate or appropriate.
// TODO: Revise the INVALID char count to an agreed upon threshold
string[] segments = lastLineRead.Split('?');
if (segments.Length <= MAX_INVALID_CONNECTION_CHARS)
{
CommunicationState = CommunicationStates.Connected;
// new send any command that initialize this printer
string connectGCode = ActiveSliceSettings.Instance.GetActiveValue("connect_gcode");
SendLineToPrinterNow(connectGCode);
}
else
{
// Force port shutdown and cleanup
AbortConnectionAttempt("Invalid printer response".Localize(), false);
}
}
}
} while (true);
}
timeSinceLastReadAnything.Restart();
}
Thread.Sleep(1);
}
catch (TimeoutException e)
{
Debug.Print(e.Message);
GuiWidget.BreakInDebugger();
}
catch (IOException e2)
{
Debug.Print(e2.Message);
GuiWidget.BreakInDebugger();
OnConnectionFailed(null);
}
catch (InvalidOperationException ex)
{
Debug.Print(ex.Message);
GuiWidget.BreakInDebugger();
Debug.WriteLine(ex.Message);
// this happens when the serial port closes after we check and before we read it.
}
catch (UnauthorizedAccessException e3)
{
Debug.Print(e3.Message);
GuiWidget.BreakInDebugger();
OnConnectionFailed(null);
}
catch (Exception e4)
{
Debug.Print(e4.Message);
GuiWidget.BreakInDebugger();
// Let's track this issue if possible.
MatterControlApplication.Instance.ReportException(e4, this.GetType().Name, MethodBase.GetCurrentMethod().Name);
}
}
}
private void WriteToPrinter(string lineToWrite, string lineWithoutChecksum)
{
if (PrinterIsConnected || CommunicationState == CommunicationStates.AttemptingToConnect)
{
if (serialPort != null && serialPort.IsOpen)
{
FoundStringEventArgs foundStringEvent = new FoundStringEventArgs(lineWithoutChecksum);
// If we get a home command, ask the printer where it is after sending it.
if (lineWithoutChecksum.StartsWith("G28")
|| lineWithoutChecksum.StartsWith("G29")
|| lineWithoutChecksum.StartsWith("G92"))
{
SendLineToPrinterNow("M114");
}
// write data to communication
{
StringEventArgs currentEvent = new StringEventArgs(lineToWrite);
if (PrinterIsPrinting)
{
string lineWidthoutCR = lineToWrite.Substring(0, lineToWrite.Length - 2);
CommunicationUnconditionalToPrinter.CallEvents(this, new StringEventArgs("{0} [{1:0.000}]\n".FormatWith(lineWidthoutCR, timeSinceStartedPrint.Elapsed.TotalSeconds)));
}
else
{
CommunicationUnconditionalToPrinter.CallEvents(this, currentEvent);
}
if (lineWithoutChecksum != null)
{
WriteLineStartCallBacks.CheckForKeys(foundStringEvent);
WriteLineContainsCallBacks.CheckForKeys(foundStringEvent);
if (foundStringEvent.SendToDelegateFunctions)
{
WroteLine.CallEvents(this, currentEvent);
}
}
}
try
{
lock (locker)
{
serialPort.Write(lineToWrite);
timeSinceLastWrite.Restart();
timeHaveBeenWaitingForOK.Restart();
}
//Debug.Write("w: " + lineToWrite);
}
catch (IOException ex)
{
GuiWidget.BreakInDebugger(ex.Message);
Trace.WriteLine("Error writing to printer: " + ex.Message);
// Handle hardware disconnects by relaying the failure reason and shutting down open resources
AbortConnectionAttempt("Connection Lost - " + ex.Message);
}
catch (TimeoutException e2)
{
GuiWidget.BreakInDebugger(e2.Message);
}
catch (UnauthorizedAccessException e3)
{
AbortConnectionAttempt(e3.Message);
}
catch (Exception e)
{
GuiWidget.BreakInDebugger(e.Message);
}
}
else
{
OnConnectionFailed(null);
}
}
}
public void ReadFromPrinter()
{
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
timeSinceLastReadAnything.Restart();
// we want this while loop to be as fast as possible. Don't allow any significant work to happen in here
while (CommunicationState == CommunicationStates.AttemptingToConnect
|| (PrinterIsConnected && serialPort.IsOpen && !Disconnecting))
{
try
{
while (serialPort.BytesToRead > 0)
{
char nextChar = (char)serialPort.ReadChar();
using (TimedLock.Lock(this, "ReadNextChar"))
{
if (nextChar == '\r' || nextChar == '\n')
{
lastLineRead = lineBeingRead;
lineBeingRead = "";
// process this command
{
StringEventArgs currentEvent = new StringEventArgs(lastLineRead);
CommunicationUnconditionalFromPrinter.CallEvents(this, currentEvent);
FoundStringEventArgs foundResponse = new FoundStringEventArgs(currentEvent.Data);
ReadLineStartCallBacks.CheckForKeys(foundResponse);
ReadLineContainsCallBacks.CheckForKeys(foundResponse);
if (foundResponse.SendToDelegateFunctions)
{
ReadLine.CallEvents(this, currentEvent);
}
}
if (CommunicationState == CommunicationStates.AttemptingToConnect)
{
CommunicationState = CommunicationStates.Connected;
}
}
else
{
lineBeingRead += nextChar;
}
timeSinceLastReadAnything.Restart();
}
}
Thread.Sleep(1);
}
catch (TimeoutException)
{
}
catch (IOException)
{
OnConnectionFailed(null);
}
catch (InvalidOperationException)
{
// this happens when the serial port closes after we check and before we read it.
}
catch (UnauthorizedAccessException)
{
OnConnectionFailed(null);
}
}
}
private void WriteRawToPrinter(string lineToWrite, string lineWithoutChecksum)
{
if (PrinterIsConnected || CommunicationState == CommunicationStates.AttemptingToConnect)
{
if (serialPort != null && serialPort.IsOpen)
{
FoundStringEventArgs foundStringEvent = new FoundStringEventArgs(lineWithoutChecksum);
// If we get a home command, ask the printer where it is after sending it.
if (lineWithoutChecksum.StartsWith("G28") // is a home
|| lineWithoutChecksum.StartsWith("G29") // is a bed level
|| lineWithoutChecksum.StartsWith("G92") // is a reset of printer position
|| (lineWithoutChecksum.StartsWith("T") && !lineWithoutChecksum.StartsWith("T:"))) // is a switch extruder (verify this is the right time to ask this)
{
SendLineToPrinterNow("M114");
}
// write data to communication
{
StringEventArgs currentEvent = new StringEventArgs(lineToWrite);
if (PrinterIsPrinting)
{
string lineWidthoutCR = lineToWrite.TrimEnd();
CommunicationUnconditionalToPrinter.CallEvents(this, new StringEventArgs("{0} [{1:0.000}]\n".FormatWith(lineWidthoutCR, timeSinceStartedPrint.Elapsed.TotalSeconds)));
}
else
{
CommunicationUnconditionalToPrinter.CallEvents(this, currentEvent);
}
if (lineWithoutChecksum != null)
{
WriteLineStartCallBacks.CheckForKeys(foundStringEvent);
WriteLineContainsCallBacks.CheckForKeys(foundStringEvent);
if (foundStringEvent.SendToDelegateFunctions)
{
WroteLine.CallEvents(this, currentEvent);
}
}
}
try
{
lock (locker)
{
serialPort.Write(lineToWrite);
if (false) // this is for debugging. Eventually it could be hooked up to a user config option so it can be turned on in the field.
{
timeSinceRecievedOk.Stop();
if (!haveHookedDrawing)
{
sendTimeAfterOkGraph = new DataViewGraph(150, 150, 0, 30);
MatterControlApplication.Instance.AddChild(sendTimeAfterOkGraph);
haveHookedDrawing = true;
}
sendTimeAfterOkGraph.AddData("ok->send", timeSinceRecievedOk.ElapsedMilliseconds);
}
timeSinceLastWrite.Restart();
timeHaveBeenWaitingForOK.Restart();
}
//Debug.Write("w: " + lineToWrite);
}
catch (IOException ex)
{
GuiWidget.BreakInDebugger(ex.Message);
Trace.WriteLine("Error writing to printer: " + ex.Message);
// Handle hardware disconnects by relaying the failure reason and shutting down open resources
AbortConnectionAttempt("Connection Lost - " + ex.Message);
}
catch (TimeoutException e2)
{
GuiWidget.BreakInDebugger(e2.Message);
}
catch (UnauthorizedAccessException e3)
{
AbortConnectionAttempt(e3.Message);
}
catch (Exception e)
{
GuiWidget.BreakInDebugger(e.Message);
}
}
else
{
OnConnectionFailed(null);
}
}
}
void WriteToPrinter(string lineToWrite, string lineWithoutChecksum)
{
if (PrinterIsConnected || CommunicationState == CommunicationStates.AttemptingToConnect)
{
if (serialPort != null && serialPort.IsOpen)
{
// write data to communication
{
StringEventArgs currentEvent = new StringEventArgs(lineToWrite);
CommunicationUnconditionalToPrinter.CallEvents(this, currentEvent);
if (lineWithoutChecksum != null)
{
FoundStringEventArgs foundStringEvent = new FoundStringEventArgs(lineWithoutChecksum);
WriteLineStartCallBacks.CheckForKeys(foundStringEvent);
WriteLineContainsCallBacks.CheckForKeys(foundStringEvent);
if (foundStringEvent.SendToDelegateFunctions)
{
WroteLine.CallEvents(this, currentEvent);
}
}
}
try
{
timeSinceLastReadAnything.Restart();
timeHaveBeenWaitingForOK.Restart();
serialPort.Write(lineToWrite);
}
catch (IOException)
{
OnConnectionFailed(null);
}
catch (TimeoutException)
{
}
}
else
{
OnConnectionFailed(null);
}
}
}
public void WriteLine(Object sender, EventArgs e)
{
StringEventArgs lineString = e as StringEventArgs;
Write(lineString.Data + "\n");
}
private void WriteToPrinter(string lineToWrite, string lineWithoutChecksum)
{
if (PrinterIsConnected || CommunicationState == CommunicationStates.AttemptingToConnect)
{
if (serialPort != null && serialPort.IsOpen)
{
FoundStringEventArgs foundStringEvent = new FoundStringEventArgs(lineWithoutChecksum);
// write data to communication
{
StringEventArgs currentEvent = new StringEventArgs(lineToWrite);
if (PrinterIsPrinting)
{
string lineWidthoutCR = lineToWrite.Substring(0, lineToWrite.Length - 2);
CommunicationUnconditionalToPrinter.CallEvents(this, new StringEventArgs("{0} [{1:0.000}]\n".FormatWith(lineWidthoutCR, timeSinceStartedPrint.Elapsed.TotalSeconds)));
}
else
{
CommunicationUnconditionalToPrinter.CallEvents(this, currentEvent);
}
if (lineWithoutChecksum != null)
{
WriteLineStartCallBacks.CheckForKeys(foundStringEvent);
WriteLineContainsCallBacks.CheckForKeys(foundStringEvent);
if (foundStringEvent.SendToDelegateFunctions)
{
WroteLine.CallEvents(this, currentEvent);
}
}
}
try
{
using (TimedLock.Lock(this, "serialPort.Write"))
{
serialPort.Write(lineToWrite);
timeSinceLastWrite.Restart();
timeHaveBeenWaitingForOK.Restart();
}
//Debug.Write("w: " + lineToWrite);
}
catch (IOException ex)
{
Debug.Print(ex.Message);
GuiWidget.BreakInDebugger();
Trace.WriteLine("Error writing to printer: " + ex.Message);
// Handle hardware disconnects by relaying the failure reason and shutting down open resources
AbortConnectionAttempt("Connection Lost - " + ex.Message);
}
catch (TimeoutException e2)
{
Debug.Print(e2.Message);
GuiWidget.BreakInDebugger();
}
catch (Exception e)
{
Debug.Print(e.Message);
GuiWidget.BreakInDebugger();
// Let's track this issue if possible.
MatterControlApplication.Instance.ReportException(e, this.GetType().Name, MethodBase.GetCurrentMethod().Name);
}
}
else
{
OnConnectionFailed(null);
}
}
}
private void FromPrinter(Object sender, EventArgs e)
{
StringEventArgs lineString = e as StringEventArgs;
StringEventArgs eventArgs = new StringEventArgs("<-" + lineString.Data);
PrinterLines.Add(eventArgs.Data);
OnHasChanged(eventArgs);
}
private void Instance_ConnectionFailed(object sender, EventArgs e)
{
OnHasChanged(null);
StringEventArgs eventArgs = new StringEventArgs("Lost connection to printer.");
PrinterLines.Add(eventArgs.Data);
OnHasChanged(eventArgs);
}