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Fix mixing extruder feedrate (#15905)

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Scott Lahteine 2019-11-26 18:03:59 -06:00 committed by GitHub
parent 12417d087b
commit 077eeaa0f4
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1 changed files with 29 additions and 19 deletions
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46
Marlin/src/module/planner.cpp
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@ -2007,28 +2007,38 @@ bool Planner::_populate_block(block_t * const block, bool split_move,
filwidth.advance_e(delta_mm.e);
#endif
// Calculate and limit speed in mm/sec for each axis
// Calculate and limit speed in mm/sec
xyze_float_t current_speed;
float speed_factor = 1.0f; // factor <1 decreases speed
LOOP_XYZE(i) {
#if BOTH(MIXING_EXTRUDER, RETRACT_SYNC_MIXING)
// In worst case, only one extruder running, no change is needed.
// In best case, all extruders run the same amount, we can divide by MIXING_STEPPERS
float delta_mm_i = 0;
if (i == E_AXIS && mixer.get_current_vtool() == MIXER_AUTORETRACT_TOOL)
delta_mm_i = delta_mm.e / MIXING_STEPPERS;
else
delta_mm_i = delta_mm.e;
#else
const float delta_mm_i = delta_mm[i];
#endif
const feedRate_t cs = ABS(current_speed[i] = delta_mm_i * inverse_secs);
#if ENABLED(DISTINCT_E_FACTORS)
if (i == E_AXIS) i += extruder;
#endif
if (cs > settings.max_feedrate_mm_s[i]) NOMORE(speed_factor, settings.max_feedrate_mm_s[i] / cs);
// Linear axes first with less logic
LOOP_XYZ(i) {
current_speed[i] = delta_mm[i] * inverse_secs;
const feedRate_t cs = ABS(current_speed[i]),
max_fr = settings.max_feedrate_mm_s[i];
if (cs > max_fr) NOMORE(speed_factor, max_fr / cs);
}
// Limit speed on extruders, if any
#if EXTRUDERS
{
current_speed.e = delta_mm.e * inverse_secs;
#if BOTH(MIXING_EXTRUDER, RETRACT_SYNC_MIXING)
// Move all mixing extruders at the specified rate
if (mixer.get_current_vtool() == MIXER_AUTORETRACT_TOOL)
current_speed.e *= MIXING_STEPPERS;
#endif
const feedRate_t cs = ABS(current_speed.e),
max_fr = (settings.max_feedrate_mm_s[E_AXIS_N(extruder)]
#if BOTH(MIXING_EXTRUDER, RETRACT_SYNC_MIXING)
* MIXING_STEPPERS
#endif
);
if (cs > max_fr) NOMORE(speed_factor, max_fr / cs);
}
#endif
// Max segment time in µs.
#ifdef XY_FREQUENCY_LIMIT