Method SpinGCodeBuffer

src/GCodes/GCodes.cpp:505–560

Do some work on an input channel, returning true if we did something significant

// Do some work on an input channel, returning true if we did something significant
bool GCodes::SpinGCodeBuffer(GCodeBuffer& gb) noexcept
{
	// Set up a buffer for the reply
	String<GCodeReplyLength> reply;
	bool result;

	MutexLocker gbLock(gb.mutex);
	if (gb.GetState() == GCodeState::normal)
	{
		if (gb.LatestMachineState().messageAcknowledged)
		{
			const bool shouldAbort = gb.LatestMachineState().messageShouldAbort;
			gb.PopState(true);											// this could fail if the current macro has already been aborted

			if (shouldAbort)
			{
				if (gb.LatestMachineState().GetPrevious() == nullptr)
				{
#if HAS_SBC_INTERFACE
					if (reprap.UsingSbcInterface())
					{
						gb.AbortFile(false);
					}
#endif
					StopPrint(nullptr, StopPrintReason::userCancelled);
				}
				else
				{
					FileMacroCyclesReturn(gb);
				}
			}
			result = shouldAbort;
		}
		else
		{
			result = StartNextGCode(gb, reply.GetRef());
		}
	}
	else
	{
		RunStateMachine(gb, reply.GetRef());                            // execute the state machine
		result = true;													// assume we did something useful (not necessarily true, e.g. could be waiting for movement to stop)
	}

	if ((gb.IsExecuting()
#if HAS_SBC_INTERFACE
			|| gb.IsSendRequested() || gb.IsExecutingOnSbc()
#endif
		) || (gb.IsWaitingForTemperatures())							// this is needed to get reports sent when the GB is waiting for temperatures to be reached
	   )
	{
		CheckReportDue(gb, reply.GetRef());
	}

	return result;
}

// Start a new gcode, or continue to execute one that has already been started. Return true if we found something significant to do.