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Add LIN_ADVANCE

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This commit is contained in:
Sebastianv650
2016-05-04 18:53:17 +02:00
committed by Scott Lahteine
parent e2d4919c01
commit fb8e880734
6 changed files with 178 additions and 3 deletions
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12
Marlin/planner.cpp
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@ -1045,6 +1045,18 @@ void Planner::check_axes_activity() {
// the maximum junction speed and may always be ignored for any speed reduction checks.
block->nominal_length_flag = (block->nominal_speed <= v_allowable);
block->recalculate_flag = true; // Always calculate trapezoid for new block
#ifdef LIN_ADVANCE
//bse = allsteps: A problem occures if there is a very tiny move before a retract.
//In this case, the retract and the move will be executed together. This leads to an enormus amount advance steps due to a hughe e_acceleration.
//The math is correct, but you don't want a retract move done with advance! This situation has to be filtered out.
if ((!bse || (!bsx && !bsy && !bsz)) || (stepper.get_advance_k() == 0) || (bse == allsteps)) {
block->use_advance_lead = false;
} else {
block->use_advance_lead = true;
block->e_speed_multiplier8 = (block->steps[E_AXIS] << 8) / block->step_event_count;
}
#endif
// Update previous path unit_vector and nominal speed
for (int i = 0; i < NUM_AXIS; i++) previous_speed[i] = current_speed[i];