Allow running the model checking during autotuning, with the only
exception being the parameter estimation stage where we alter the same
value which is used by the checker (done to conserve memory/code).
With previous changes the model checker will disable/enable itself when
passing through an unavailable R vector entry, allowing to start the
calibration by checking only the stages where the part fan is disabled.
The C/R0 values should be stable enough to provide a fail-safe mechanism
for printers of the same variant right from the factory.
Instead of assuming the model state is always valid, allow NAN values to
pass-through the various check/estimation stages.
This allows running the model checker with incomplete parameters (for
example, missing entries in the R vector) and resume automatically.
We already disable the heaters upon entering, and the new temperature
isr doesn't perform any direct movement until we return to the main
loop.
This allows us to remove direct control of the soft_pwm interrupt from
the header, which is dangerous.
Call this variable menu_block_mask instead. We don't need to know the
exact reason of why we're locking the menu.
We will be able to reuse this to prevent menu entry during more
activities in a cleaner way than testing for each condition as it's
currently done for both menu entry and longpress.
This allows us to use "M310 B0 W0.01" as a way to report the current
error continuosly on the serial without 1) more code and 2) without
preventing regular usage.
Do not allow resuming until all thermal and fan errors are clear.
Call the appropriate resume function when resuming a printing depending
on the saved_print state (is saved_print is available, then we always
need to resume from the saved state even when printing via usb).
Clear the Stopped state when resuming, so that commands can be accepted
again.
Ensure we never fall into the boundary values provided by the min/max
limits.
Save/restore the initial guess value, so that a convergence failure
restores the initial model state.
Add a new LCD_MESSAGE_INFO priority which can be overridden by regular
status updates, but only if a certain amount of time has passed.
Assign a time stamp to all message updates, so that the time since the
last update can be determined. Also switch the message type to Status,
so that the message always becomes visibile.
Always show status or info messages when printing via SD if the message
is recent enough.
Remove useless repeated calls to disable heaters and turn on the fans,
since this is done at a higher level.
Avoid repeating messages on the serial. Do it just once.
Make a critical alert sound unconditionally.
Break out of the autotuning if a thermal error condition is detected and
attempt to restore a safe initial state irregardless of the error
handlers.
Also error out if the estimation fails to converge.
Calibrate C/R values via univariate minimization using golden section.
This is done in several passes:
- Bootstrap C by setting an initial high R value
- Calibrate R at the requested working temperature
- Cooldown
- Refine C to the final value
- Estimate R losses for a subset of fan speeds
- Interpolate remaining values to speed-up the process
This results in robust values which are tailored to the current
filtering constants, and avoid having to sample for an extended
time to reach the required resolution.
The refining pass could avoid cooldown if the recording buffer was at
least twice as large, so that we could record both the heating and the
steady-state, saving _considerable_ time.
This currently bypasses the ConfigurationStore, which doesn't fit the
malin model nicely.
temp_model is using it's own private copy directly.
But maybe we should change this in the future.
- Allow all parameters to be changed at runtime through M310
- Move the model prototypes into a separate temp_model.h header
- Allow the checked to be enabled/disabled at runtime
- Introduce a warning threshold
When triggering a thermal error, allow higher-priority errors to
override the initial error source.
This allows a fatal error such as maxtemp to trigger to a full stop even
if thermal runaway has already been triggered.
Reorder error types according to their priority.
Do not overwrite the error source if the error flag is already set.
As checks are performed in priority order, this ensures min/maxtemp
user-level handlers are triggered even if the thermal model can detect
an issue in the same cycle.
This restores MAXTEMP handling, which was simply shadowed.
Setting pid_tuning_finished can result in the heaters stuck to full
power. As a result, we need to ensure that when PID management is
disabled, heaters are also.
Use pid_tuning_finished as a flag to prevent automatic PID management.
As a result, set the default start-up state to true and adjust the
dependent code accordingly.
