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[2.0.x] Add simultaneous retraction for mixing extruder (#11941)

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This commit is contained in:
Thomas Moore
2018-10-02 00:32:02 -04:00
committed by Scott Lahteine
parent 80f9473fb4
commit ab4549d2bc
58 changed files with 213 additions and 4 deletions
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37
Marlin/src/feature/fwretract.cpp
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@ -36,6 +36,10 @@ FWRetract fwretract; // Single instance - this calls the constructor
#include "../module/planner.h"
#include "../module/stepper.h"
#if ENABLED(RETRACT_SYNC_MIXING)
#include "../feature/mixing.h"
#endif
// private:
#if EXTRUDERS > 1
@ -127,14 +131,32 @@ void FWRetract::retract(const bool retracting
const float old_feedrate_mm_s = feedrate_mm_s,
unscale_e = RECIPROCAL(planner.e_factor[active_extruder]),
unscale_fr = 100.0 / feedrate_percentage, // Disable feedrate scaling for retract moves
base_retract = swapping ? swap_retract_length : retract_length;
base_retract = (
(swapping ? swap_retract_length : retract_length)
#if ENABLED(RETRACT_SYNC_MIXING)
* (MIXING_STEPPERS)
#endif
);
// The current position will be the destination for E and Z moves
set_destination_from_current();
#if ENABLED(RETRACT_SYNC_MIXING)
float old_mixing_factor[MIXING_STEPPERS];
for (uint8_t i = 0; i < MIXING_STEPPERS; i++) {
old_mixing_factor[i] = mixing_factor[i];
mixing_factor[i] = RECIPROCAL(MIXING_STEPPERS);
}
#endif
if (retracting) {
// Retract by moving from a faux E position back to the current E position
feedrate_mm_s = retract_feedrate_mm_s * unscale_fr;
feedrate_mm_s = (
retract_feedrate_mm_s * unscale_fr
#if ENABLED(RETRACT_SYNC_MIXING)
* (MIXING_STEPPERS)
#endif
);
current_retract[active_extruder] = base_retract * unscale_e;
prepare_move_to_destination(); // set_current_to_destination
planner.synchronize(); // Wait for move to complete
@ -163,11 +185,20 @@ void FWRetract::retract(const bool retracting
}
current_retract[active_extruder] = 0.0;
feedrate_mm_s = (swapping ? swap_retract_recover_feedrate_mm_s : retract_recover_feedrate_mm_s) * unscale_fr;
feedrate_mm_s = (
(swapping ? swap_retract_recover_feedrate_mm_s : retract_recover_feedrate_mm_s) * unscale_fr
#if ENABLED(RETRACT_SYNC_MIXING)
* (MIXING_STEPPERS)
#endif
);
prepare_move_to_destination(); // Recover E, set_current_to_destination
planner.synchronize(); // Wait for move to complete
}
#if ENABLED(RETRACT_SYNC_MIXING)
COPY(mixing_factor, old_mixing_factor); // Restore original mixing factor
#endif
feedrate_mm_s = old_feedrate_mm_s; // Restore original feedrate
retracted[active_extruder] = retracting; // Active extruder now retracted / recovered