public override string ReadLine()
{
// Send any commands that are queue before moving on to the internal stream.
string nextCommand = queuedCommands.ReadLine();
if (nextCommand != null)
{
return(nextCommand);
}
switch (RecoveryState)
{
// heat the extrude to remove it from the part
case RecoveryState.RemoveHeating:
// TODO: make sure we heat up all the extruders that we need to (all that are used)
queuedCommands.Add("G21; set units to millimeters");
queuedCommands.Add("M107; fan off");
queuedCommands.Add("T0; set the active extruder to 0");
queuedCommands.Add("G90; use absolute coordinates");
queuedCommands.Add("G92 E0; reset the expected extruder position");
queuedCommands.Add("M82; use absolute distance for extrusion");
bool hasHeatedBed = printer.Settings.GetValue <bool>(SettingsKey.has_heated_bed);
double bedTemp = printer.Settings.GetValue <double>(SettingsKey.bed_temperature);
if (hasHeatedBed && bedTemp > 0)
{
// start heating the bed
queuedCommands.Add($"M140 S{bedTemp}");
}
// heat up the extruder
queuedCommands.Add("M109 S{0}".FormatWith(printer.Settings.Helpers.ExtruderTemperature(0)));
if (hasHeatedBed && bedTemp > 0)
{
// finish heating the bed
queuedCommands.Add($"M190 S{bedTemp}");
}
RecoveryState = RecoveryState.Raising;
return("");
// remove it from the part
case RecoveryState.Raising:
// We don't know where the printer is for sure (it make have been turned off). Disable leveling until we know where it is.
PrintLevelingStream.AllowLeveling = false;
queuedCommands.Add("M114 ; get current position");
queuedCommands.Add("G91 ; move relative");
queuedCommands.Add("G1 Z10 F{0}".FormatWith(printer.Settings.ZSpeed()));
queuedCommands.Add("G90 ; move absolute");
RecoveryState = RecoveryState.Homing;
return("");
// if top homing, home the extruder
case RecoveryState.Homing:
if (printer.Settings.GetValue <bool>(SettingsKey.z_homes_to_max))
{
queuedCommands.Add("G28");
}
else
{
// home x
queuedCommands.Add("G28 X0");
// home y
queuedCommands.Add("G28 Y0");
// move to the place we can home z from
Vector2 recoveryPositionXy = printer.Settings.GetValue <Vector2>(SettingsKey.recover_position_before_z_home);
queuedCommands.Add("G1 X{0:0.###}Y{1:0.###}F{2}".FormatWith(recoveryPositionXy.X, recoveryPositionXy.Y, printer.Settings.XSpeed()));
// home z
queuedCommands.Add("G28 Z0");
}
// We now know where the printer is re-enable print leveling
PrintLevelingStream.AllowLeveling = true;
RecoveryState = RecoveryState.FindingRecoveryLayer;
return("");
// This is to recover printing if an out a filament occurs.
// Help the user move the extruder down to just touching the part
case RecoveryState.FindingRecoveryLayer:
if (false) // help the user get the head to the right position
{
// move to above the completed print
// move over a know good part of the model at the current top layer (extrude vertex from gcode)
// let the user move down until they like the height
// calculate that position and continue
}
else // we are resuming because of disconnect or reset, skip this
{
RecoveryState = RecoveryState.SkippingGCode;
goto case RecoveryState.SkippingGCode;
}
case RecoveryState.SkippingGCode:
// run through the gcode that the device expected looking for things like temp
// and skip everything else until we get to the point we left off last time
int commandCount = 0;
boundsOfSkippedLayers = RectangleDouble.ZeroIntersection;
while (internalStream.GCodeFile.PercentComplete(internalStream.LineIndex) < percentDone)
{
string line = internalStream.ReadLine();
if (line == null)
{
break;
}
commandCount++;
// make sure we don't parse comments
if (line.Contains(";"))
{
line = line.Split(';')[0];
}
lastDestination = GetPosition(line, lastDestination);
if (commandCount > 100)
{
boundsOfSkippedLayers.ExpandToInclude(lastDestination.position.Xy);
}
// check if the line is something we want to send to the printer (like a temp)
if (line.StartsWith("M109") || // heat and wait extruder
line.StartsWith("M104") || // heat extruder
line.StartsWith("M190") || // heat and wait bed
line.StartsWith("M140") || // heat bed
line.StartsWith("T") || // switch extruder
line.StartsWith("M106") || // fan on
line.StartsWith("M107") || // fan off
line.StartsWith("G92")) // set position
{
return(line);
}
}
RecoveryState = RecoveryState.PrimingAndMovingToStart;
// make sure we always- pick up the last movement
boundsOfSkippedLayers.ExpandToInclude(lastDestination.position.Xy);
return("");
case RecoveryState.PrimingAndMovingToStart:
{
if (printer.Settings.GetValue("z_homes_to_max") == "0") // we are homed to the bed
{
// move to the height we can recover printing from
Vector2 recoverPositionXy = printer.Settings.GetValue <Vector2>(SettingsKey.recover_position_before_z_home);
queuedCommands.Add(CreateMovementLine(new PrinterMove(new VectorMath.Vector3(recoverPositionXy.X, recoverPositionXy.Y, lastDestination.position.Z), 0, printer.Settings.ZSpeed())));
}
double extruderWidth = printer.Settings.GetValue <double>(SettingsKey.nozzle_diameter);
// move to a position outside the printed bounds
queuedCommands.Add(CreateMovementLine(new PrinterMove(
new Vector3(boundsOfSkippedLayers.Left - extruderWidth * 2, boundsOfSkippedLayers.Bottom + boundsOfSkippedLayers.Height / 2, lastDestination.position.Z),
0, printer.Settings.XSpeed())));
// let's prime the extruder
queuedCommands.Add("G1 E10 F{0}".FormatWith(printer.Settings.EFeedRate(0))); // extrude 10
queuedCommands.Add("G1 E9"); // and retract a bit
// move to the actual print position
queuedCommands.Add(CreateMovementLine(new PrinterMove(lastDestination.position, 0, printer.Settings.XSpeed())));
/// reset the printer to know where the filament should be
queuedCommands.Add("G92 E{0}".FormatWith(lastDestination.extrusion));
RecoveryState = RecoveryState.PrintingSlow;
}
return("");
case RecoveryState.PrintingSlow:
{
string lineToSend = internalStream.ReadLine();
if (lineToSend == null)
{
return(null);
}
if (!GCodeFile.IsLayerChange(lineToSend))
{
// have not seen the end of this layer so keep printing slow
if (LineIsMovement(lineToSend))
{
PrinterMove currentMove = GetPosition(lineToSend, lastDestination);
PrinterMove moveToSend = currentMove;
moveToSend.feedRate = recoverFeedRate;
lineToSend = CreateMovementLine(moveToSend, lastDestination);
lastDestination = currentMove;
return(lineToSend);
}
return(lineToSend);
}
}
// we only fall through to here after seeing the next "; Layer:"
RecoveryState = RecoveryState.PrintingToEnd;
return("");
case RecoveryState.PrintingToEnd:
return(internalStream.ReadLine());
}
return(null);
}
public override string ReadLine()
{
string nextCommand = queuedCommands.ReadLine();
if (nextCommand != null)
{
return(nextCommand);
}
switch (resumeState)
{
// heat the extrude to remove it from the part
case ResumeState.RemoveHeating:
// TODO: make sure we heat up all the extruders that we need to (all that are used)
queuedCommands.Add("G21; set units to millimeters");
queuedCommands.Add("M107; fan off");
queuedCommands.Add("T0; set the active extruder to 0");
queuedCommands.Add("G90; use absolute coordinates");
queuedCommands.Add("G92 E0; reset the expected extruder position");
queuedCommands.Add("M82; use absolute distance for extrusion");
queuedCommands.Add("M109 S{0}".FormatWith(ActiveSliceSettings.Instance.ExtruderTemperature(0)));
resumeState = ResumeState.Raising;
return("");
// remove it from the part
case ResumeState.Raising:
queuedCommands.Add("M114 ; get current position");
queuedCommands.Add("G91 ; move relative");
queuedCommands.Add("G1 Z10 F{0}".FormatWith(MovementControls.ZSpeed));
queuedCommands.Add("G90 ; move absolute");
resumeState = ResumeState.Homing;
return("");
// if top homing, home the extruder
case ResumeState.Homing:
if (ActiveSliceSettings.Instance.ActiveValue("z_homes_to_max") == "1")
{
queuedCommands.Add("G28");
}
else
{
// home x
queuedCommands.Add("G28 X0");
// home y
queuedCommands.Add("G28 Y0");
// move to the place we can home z from
Vector2 resumePositionXy = ActiveSliceSettings.Instance.ActiveVector2("resume_position_before_z_home");
queuedCommands.Add("G1 X{0:0.000}Y{1:0.000}F{2}".FormatWith(resumePositionXy.x, resumePositionXy.y, MovementControls.XSpeed));
// home z
queuedCommands.Add("G28 Z0");
}
resumeState = ResumeState.FindingResumeLayer;
return("");
// This is to resume printing if an out a filament occurs.
// Help the user move the extruder down to just touching the part
case ResumeState.FindingResumeLayer:
if (false) // help the user get the head to the right position
{
// move to above the completed print
// move over a know good part of the model at the current top layer (extrude vertex from gcode)
// let the user move down until they like the height
// calculate that position and continue
}
else // we are resuming because of disconnect or reset, skip this
{
resumeState = ResumeState.SkippingGCode;
goto case ResumeState.SkippingGCode;
}
case ResumeState.SkippingGCode:
// run through the gcode that the device expected looking for things like temp
// and skip everything else until we get to the point we left off last time
while (internalStream.FileStreaming.PercentComplete(internalStream.LineIndex) < percentDone)
{
string line = internalStream.ReadLine();
lastDestination = GetPosition(line, lastDestination);
// check if the line is something we want to send to the printer (like a temp)
if (line.StartsWith("M109") ||
line.StartsWith("M104") ||
line.StartsWith("T") ||
line.StartsWith("M106") ||
line.StartsWith("M107"))
{
return(line);
}
}
resumeState = ResumeState.PrimingAndMovingToStart;
return("");
case ResumeState.PrimingAndMovingToStart:
{
// let's prime the extruder, move to a good position over the part, then start printing
queuedCommands.Add("G1 E5");
queuedCommands.Add("G1 E4");
if (ActiveSliceSettings.Instance.ActiveValue("z_homes_to_max") == "0") // we are homed to the bed
{
// move to the height we can resume printing from
Vector2 resumePositionXy = ActiveSliceSettings.Instance.ActiveVector2("resume_position_before_z_home");
queuedCommands.Add(CreateMovementLine(new PrinterMove(new VectorMath.Vector3(resumePositionXy.x, resumePositionXy.y, lastDestination.position.z + 5), 0, MovementControls.ZSpeed)));
// move just above the actual print position
queuedCommands.Add(CreateMovementLine(new PrinterMove(lastDestination.position + new VectorMath.Vector3(0, 0, 5), 0, MovementControls.XSpeed)));
// move down to part
queuedCommands.Add(CreateMovementLine(new PrinterMove(lastDestination.position, 0, MovementControls.ZSpeed)));
}
else
{
// move to the actual print position
queuedCommands.Add(CreateMovementLine(new PrinterMove(lastDestination.position, 0, MovementControls.ZSpeed)));
}
// extrude back to our filament start
queuedCommands.Add("G1 E5");
/// reset the printer to know where the filament should be
queuedCommands.Add("G92 E{0}".FormatWith(lastDestination.extrusion));
resumeState = ResumeState.PrintingSlow;
}
return("");
case ResumeState.PrintingSlow:
{
string lineToSend = internalStream.ReadLine();
if (lineToSend != null &&
lineToSend.StartsWith("; LAYER:"))
{
if (lineToSend != null &&
LineIsMovement(lineToSend))
{
PrinterMove currentMove = GetPosition(lineToSend, lastDestination);
PrinterMove moveToSend = currentMove;
double feedRate;
string firstLayerSpeed = ActiveSliceSettings.Instance.ActiveValue("resume_first_layer_speed");
if (!double.TryParse(firstLayerSpeed, out feedRate))
{
feedRate = 10;
}
feedRate *= 60;
moveToSend.feedRate = feedRate;
lineToSend = CreateMovementLine(moveToSend, lastDestination);
lastDestination = currentMove;
return(lineToSend);
}
return(lineToSend);
}
}
resumeState = ResumeState.PrintingToEnd;
return("");
case ResumeState.PrintingToEnd:
return(internalStream.ReadLine());
}
return(null);
}