Patch LIN_ADVANCE for style and forward-compatibility
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fb8e880734
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@ -445,6 +445,15 @@
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#define D_FILAMENT 2.85
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#endif
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// Implementation of a linear pressure control
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// Assumption: advance = k * (delta velocity)
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// K=0 means advance disabled. A good value for a gregs wade extruder will be around K=75
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//#define LIN_ADVANCE
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#if ENABLED(LIN_ADVANCE)
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#define LIN_ADVANCE_K 75
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#endif
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// @section leveling
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// Default mesh area is an area with an inset margin on the print area.
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@ -457,15 +466,6 @@
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#define MESH_MAX_Y (Y_MAX_POS - (MESH_INSET))
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#endif
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//Implementation of a linear pressure control
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//Assumption: advance = k * (delta velocity)
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//K=0 means advance disabled. A good value for a gregs wade extruder will be around K=75
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#define LIN_ADVANCE
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#if ENABLED(LIN_ADVANCE)
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#define LIN_K 75
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#endif
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// @section extras
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// Arc interpretation settings:
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@ -6469,13 +6469,13 @@ inline void gcode_M503() {
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#endif // DUAL_X_CARRIAGE
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#if ENABLED(LIN_ADVANCE)
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/**
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/**
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* M905: Set advance factor
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*/
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inline void gcode_M905() {
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inline void gcode_M905() {
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stepper.synchronize();
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stepper.advance_M905();
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}
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}
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#endif
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/**
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@ -351,6 +351,13 @@
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#endif // AUTO_BED_LEVELING_FEATURE
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/**
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* Advance Extrusion
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*/
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#if ENABLED(ADVANCE) && ENABLED(LIN_ADVANCE)
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#error You can enable ADVANCE or LIN_ADVANCE, but not both.
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#endif
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/**
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* Filament Width Sensor
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*/
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@ -358,7 +365,6 @@
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#error "FILAMENT_WIDTH_SENSOR requires a FILWIDTH_PIN to be defined."
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#endif
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/**
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* ULTIPANEL encoder
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*/
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@ -1046,23 +1046,27 @@ void Planner::check_axes_activity() {
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block->nominal_length_flag = (block->nominal_speed <= v_allowable);
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block->recalculate_flag = true; // Always calculate trapezoid for new block
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#ifdef LIN_ADVANCE
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//bse = allsteps: A problem occures if there is a very tiny move before a retract.
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//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.
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//The math is correct, but you don't want a retract move done with advance! This situation has to be filtered out.
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if ((!bse || (!bsx && !bsy && !bsz)) || (stepper.get_advance_k() == 0) || (bse == allsteps)) {
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block->use_advance_lead = false;
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} else {
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block->use_advance_lead = true;
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block->e_speed_multiplier8 = (block->steps[E_AXIS] << 8) / block->step_event_count;
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}
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#endif
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// Update previous path unit_vector and nominal speed
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for (int i = 0; i < NUM_AXIS; i++) previous_speed[i] = current_speed[i];
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previous_nominal_speed = block->nominal_speed;
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#if ENABLED(ADVANCE)
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#if ENABLED(LIN_ADVANCE)
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// bse == allsteps: A problem occurs when there's a very tiny move before a retract.
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// In this case, the retract and the move will be executed together.
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// This leads to an enormous number of advance steps due to a huge e_acceleration.
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// The math is correct, but you don't want a retract move done with advance!
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// So this situation is filtered out here.
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if (!bse || (!bsx && !bsy && !bsz) || stepper.get_advance_k() == 0 || bse == allsteps) {
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block->use_advance_lead = false;
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}
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else {
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block->use_advance_lead = true;
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block->e_speed_multiplier8 = (block->steps[E_AXIS] << 8) / block->step_event_count;
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}
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#elif ENABLED(ADVANCE)
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// Calculate advance rate
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if (!bse || (!bsx && !bsy && !bsz)) {
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block->advance_rate = 0;
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@ -1081,7 +1085,8 @@ void Planner::check_axes_activity() {
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SERIAL_ECHOPGM("advance rate :");
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SERIAL_ECHOLN(block->advance_rate/256.0);
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*/
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#endif // ADVANCE
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#endif // ADVANCE or LIN_ADVANCE
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calculate_trapezoid_for_block(block, block->entry_speed / block->nominal_speed, safe_speed / block->nominal_speed);
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@ -64,16 +64,16 @@ typedef struct {
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unsigned char direction_bits; // The direction bit set for this block (refers to *_DIRECTION_BIT in config.h)
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#if ENABLED(ADVANCE)
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// Advance extrusion
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#if ENABLED(LIN_ADVANCE)
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bool use_advance_lead;
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int e_speed_multiplier8; // Factorised by 2^8 to avoid float
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#elif ENABLED(ADVANCE)
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long advance_rate;
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volatile long initial_advance;
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volatile long final_advance;
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float advance;
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#endif
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#ifdef LIN_ADVANCE
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bool use_advance_lead;
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int e_speed_multiplier8; //factorised by 2^8 to avoid float
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#endif
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// Fields used by the motion planner to manage acceleration
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float nominal_speed, // The nominal speed for this block in mm/sec
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@ -89,13 +89,24 @@ long Stepper::counter_X = 0,
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volatile unsigned long Stepper::step_events_completed = 0; // The number of step events executed in the current block
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#if ENABLED(ADVANCE)
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#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
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unsigned char Stepper::old_OCR0A;
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long Stepper::final_advance = 0,
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volatile unsigned char Stepper::eISR_Rate = 200; // Keep the ISR at a low rate until needed
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#if ENABLED(LIN_ADVANCE)
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volatile int Stepper::e_steps[EXTRUDERS];
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int Stepper::extruder_advance_k = LIN_ADVANCE_K,
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Stepper::final_estep_rate,
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Stepper::current_estep_rate[EXTRUDERS],
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Stepper::current_adv_steps[EXTRUDERS];
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#else
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long Stepper::e_steps[EXTRUDERS],
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Stepper::final_advance = 0,
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Stepper::old_advance = 0,
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Stepper::e_steps[EXTRUDERS],
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Stepper::advance_rate,
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Stepper::advance;
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#endif
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#endif
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long Stepper::acceleration_time, Stepper::deceleration_time;
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@ -344,29 +355,31 @@ void Stepper::isr() {
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customizedSerial.checkRx(); // Check for serial chars.
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#endif
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#if ENABLED(ADVANCE)
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counter_E += current_block->steps[E_AXIS];
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if (counter_E > 0) {
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counter_E -= current_block->step_event_count;
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e_steps[current_block->active_extruder] += motor_direction(E_AXIS) ? -1 : 1;
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}
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#endif //ADVANCE
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#if ENABLED(LIN_ADVANCE)
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counter_E += current_block->steps[E_AXIS];
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if (counter_E > 0) {
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counter_E -= current_block->step_event_count;
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count_position[_AXIS(E)] += count_direction[_AXIS(E)];
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count_position[E_AXIS] += count_direction[E_AXIS];
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e_steps[current_block->active_extruder] += motor_direction(E_AXIS) ? -1 : 1;
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}
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if (current_block->use_advance_lead){
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if (current_block->use_advance_lead) {
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int delta_adv_steps; //Maybe a char would be enough?
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delta_adv_steps = (((long)extruder_advance_k * current_estep_rate[current_block->active_extruder]) >> 9) - current_adv_steps[current_block->active_extruder];
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e_steps[current_block->active_extruder] += delta_adv_steps;
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current_adv_steps[current_block->active_extruder] += delta_adv_steps;
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}
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#endif //LIN_ADVANCE
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#elif ENABLED(ADVANCE)
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counter_E += current_block->steps[E_AXIS];
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if (counter_E > 0) {
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counter_E -= current_block->step_event_count;
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e_steps[current_block->active_extruder] += motor_direction(E_AXIS) ? -1 : 1;
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}
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#endif // ADVANCE or LIN_ADVANCE
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#define _COUNTER(AXIS) counter_## AXIS
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#define _APPLY_STEP(AXIS) AXIS ##_APPLY_STEP
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@ -379,7 +392,7 @@ void Stepper::isr() {
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STEP_ADD(X);
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STEP_ADD(Y);
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STEP_ADD(Z);
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#if (DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE))
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#if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
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STEP_ADD(E);
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#endif
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@ -393,7 +406,7 @@ void Stepper::isr() {
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STEP_IF_COUNTER(X);
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STEP_IF_COUNTER(Y);
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STEP_IF_COUNTER(Z);
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#if (DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE))
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#if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
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STEP_IF_COUNTER(E);
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#endif
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@ -416,12 +429,11 @@ void Stepper::isr() {
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acceleration_time += timer;
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#if ENABLED(LIN_ADVANCE)
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if (current_block->use_advance_lead){
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current_estep_rate[current_block->active_extruder] = ((unsigned long)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
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}
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#endif
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#if ENABLED(ADVANCE)
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if (current_block->use_advance_lead)
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current_estep_rate[current_block->active_extruder] = ((unsigned long)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
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#elif ENABLED(ADVANCE)
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advance += advance_rate * step_loops;
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//NOLESS(advance, current_block->advance);
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@ -430,7 +442,8 @@ void Stepper::isr() {
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e_steps[current_block->active_extruder] += ((advance >> 8) - old_advance);
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old_advance = advance >> 8;
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#endif //ADVANCE
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#endif // ADVANCE or LIN_ADVANCE
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}
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else if (step_events_completed > (unsigned long)current_block->decelerate_after) {
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MultiU24X32toH16(step_rate, deceleration_time, current_block->acceleration_rate);
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@ -448,12 +461,12 @@ void Stepper::isr() {
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deceleration_time += timer;
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#if ENABLED(LIN_ADVANCE)
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if (current_block->use_advance_lead){
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current_estep_rate[current_block->active_extruder] = ((unsigned long)step_rate * current_block->e_speed_multiplier8) >> 8;
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}
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#endif
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#if ENABLED(ADVANCE)
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if (current_block->use_advance_lead)
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current_estep_rate[current_block->active_extruder] = ((unsigned long)step_rate * current_block->e_speed_multiplier8) >> 8;
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#elif ENABLED(ADVANCE)
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advance -= advance_rate * step_loops;
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NOLESS(advance, final_advance);
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@ -461,13 +474,13 @@ void Stepper::isr() {
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uint32_t advance_whole = advance >> 8;
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e_steps[current_block->active_extruder] += advance_whole - old_advance;
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old_advance = advance_whole;
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#endif //ADVANCE
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#endif // ADVANCE or LIN_ADVANCE
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}
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else {
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#ifdef LIN_ADVANCE
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if (current_block->use_advance_lead){
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#if ENABLED(LIN_ADVANCE)
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if (current_block->use_advance_lead)
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current_estep_rate[current_block->active_extruder] = final_estep_rate;
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}
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#endif
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OCR1A = OCR1A_nominal;
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@ -485,12 +498,14 @@ void Stepper::isr() {
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}
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}
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#if ENABLED(ADVANCE)
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#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
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// Timer interrupt for E. e_steps is set in the main routine;
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// Timer 0 is shared with millies
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ISR(TIMER0_COMPA_vect) { Stepper::advance_isr(); }
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void Stepper::advance_isr() {
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old_OCR0A += 52; // ~10kHz interrupt (250000 / 26 = 9615kHz)
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OCR0A = old_OCR0A;
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@ -521,58 +536,10 @@ void Stepper::isr() {
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#endif
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#endif
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}
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}
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#endif // ADVANCE
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#if ENABLED(LIN_ADVANCE)
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unsigned char old_OCR0A;
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// Timer interrupt for E. e_steps is set in the main routine;
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// Timer 0 is shared with millies
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ISR(TIMER0_COMPA_vect) { stepper.advance_isr(); }
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void Stepper::advance_isr() {
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old_OCR0A += 52; // ~10kHz interrupt (250000 / 26 = 9615kHz) war 52
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OCR0A = old_OCR0A;
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#define STEP_E_ONCE(INDEX) \
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if (e_steps[INDEX] != 0) { \
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E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN); \
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if (e_steps[INDEX] < 0) { \
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E## INDEX ##_DIR_WRITE(INVERT_E## INDEX ##_DIR); \
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e_steps[INDEX]++; \
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} \
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else if (e_steps[INDEX] > 0) { \
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E## INDEX ##_DIR_WRITE(!INVERT_E## INDEX ##_DIR); \
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e_steps[INDEX]--; \
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} \
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E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN); \
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}
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// Step all E steppers that have steps, up to 4 steps per interrupt
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for (unsigned char i = 0; i < 4; i++) {
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#if EXTRUDERS > 3
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switch(current_block->active_extruder){case 3:STEP_E_ONCE(3);break;case 2:STEP_E_ONCE(2);break;case 1:STEP_E_ONCE(1);break;default:STEP_E_ONCE(0);}
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#elif EXTRUDERS > 2
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switch(current_block->active_extruder){case 2:STEP_E_ONCE(2);break;case 1:STEP_E_ONCE(1);break;default:STEP_E_ONCE(0);}
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#elif EXTRUDERS > 1
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#if DISABLED(DUAL_X_CARRIAGE)
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if(current_block->active_extruder == 1){STEP_E_ONCE(1)}else{STEP_E_ONCE(0);}
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#else
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extern bool extruder_duplication_enabled;
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if(extruder_duplication_enabled){
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STEP_E_ONCE(0);
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STEP_E_ONCE(1);
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}else {
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if(current_block->active_extruder == 1){STEP_E_ONCE(1)}else{STEP_E_ONCE(0);}
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}
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#endif
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#else
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STEP_E_ONCE(0);
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#endif
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}
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}
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#endif // LIN_ADVANCE
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#endif // ADVANCE or LIN_ADVANCE
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void Stepper::init() {
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@ -739,26 +706,28 @@ void Stepper::init() {
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TCNT1 = 0;
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ENABLE_STEPPER_DRIVER_INTERRUPT();
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#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
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#if ENABLED(LIN_ADVANCE)
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for (int i = 0; i < EXTRUDERS; i++){
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for (int i = 0; i < EXTRUDERS; i++) {
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e_steps[i] = 0;
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current_adv_steps[i] = 0;
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}
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#if defined(TCCR0A) && defined(WGM01)
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CBI(TCCR0A, WGM01);
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CBI(TCCR0A, WGM00);
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#endif
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SBI(TIMSK0, OCIE0A);
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#endif //LIN_ADVANCE
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#if ENABLED(ADVANCE)
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#elif ENABLED(ADVANCE)
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for (uint8_t i = 0; i < EXTRUDERS; i++) e_steps[i] = 0;
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#endif
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#if defined(TCCR0A) && defined(WGM01)
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CBI(TCCR0A, WGM01);
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CBI(TCCR0A, WGM00);
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#endif
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for (uint8_t i = 0; i < EXTRUDERS; i++) e_steps[i] = 0;
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SBI(TIMSK0, OCIE0A);
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#endif //ADVANCE
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#endif // ADVANCE or LIN_ADVANCE
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endstops.enable(true); // Start with endstops active. After homing they can be disabled
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sei();
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@ -1137,15 +1106,12 @@ void Stepper::microstep_readings() {
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}
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#if ENABLED(LIN_ADVANCE)
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void Stepper::advance_M905() {
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if (code_seen('K')) extruder_advance_k = code_value();
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SERIAL_ECHO_START;
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SERIAL_ECHOPGM("Advance factor:");
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SERIAL_CHAR(' ');
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SERIAL_ECHOLN(extruder_advance_k);
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SERIAL_ECHOPAIR("Advance factor: ", extruder_advance_k);
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SERIAL_EOL;
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}
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int Stepper::get_advance_k(){
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return extruder_advance_k;
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}
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#endif
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#endif // LIN_ADVANCE
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||||
|
@ -90,14 +90,6 @@ class Stepper {
|
||||
static bool performing_homing;
|
||||
#endif
|
||||
|
||||
#if ENABLED(ADVANCE)
|
||||
static long e_steps[EXTRUDERS];
|
||||
#endif
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
int extruder_advance_k = LIN_K;
|
||||
#endif
|
||||
|
||||
private:
|
||||
|
||||
static unsigned char last_direction_bits; // The next stepping-bits to be output
|
||||
@ -111,18 +103,23 @@ class Stepper {
|
||||
static long counter_X, counter_Y, counter_Z, counter_E;
|
||||
static volatile unsigned long step_events_completed; // The number of step events executed in the current block
|
||||
|
||||
#if ENABLED(ADVANCE)
|
||||
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
||||
static unsigned char old_OCR0A;
|
||||
static long advance_rate, advance, old_advance, final_advance;
|
||||
#endif
|
||||
|
||||
static volatile unsigned char eISR_Rate;
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
unsigned char old_OCR0A;
|
||||
volatile int e_steps[EXTRUDERS];
|
||||
int final_estep_rate;
|
||||
int current_estep_rate[EXTRUDERS]; //Actual extruder speed [steps/s]
|
||||
int current_adv_steps[EXTRUDERS]; //The amount of current added esteps due to advance. Think of it as the current amount of pressure applied to the spring (=filament).
|
||||
static volatile int e_steps[EXTRUDERS];
|
||||
static int extruder_advance_k;
|
||||
static int final_estep_rate;
|
||||
static int current_estep_rate[EXTRUDERS]; // Actual extruder speed [steps/s]
|
||||
static int current_adv_steps[EXTRUDERS]; // The amount of current added esteps due to advance.
|
||||
// i.e., the current amount of pressure applied
|
||||
// to the spring (=filament).
|
||||
#else
|
||||
static long e_steps[EXTRUDERS];
|
||||
static long advance_rate, advance, final_advance;
|
||||
static long old_advance;
|
||||
#endif
|
||||
#endif // ADVANCE or LIN_ADVANCE
|
||||
|
||||
static long acceleration_time, deceleration_time;
|
||||
//unsigned long accelerate_until, decelerate_after, acceleration_rate, initial_rate, final_rate, nominal_rate;
|
||||
@ -168,16 +165,10 @@ class Stepper {
|
||||
|
||||
static void isr();
|
||||
|
||||
#if ENABLED(ADVANCE)
|
||||
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
||||
static void advance_isr();
|
||||
#endif
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
void advance_isr();
|
||||
void advance_M905();
|
||||
int get_advance_k();
|
||||
#endif
|
||||
|
||||
//
|
||||
// Block until all buffered steps are executed
|
||||
//
|
||||
@ -264,6 +255,11 @@ class Stepper {
|
||||
return endstops_trigsteps[axis] / planner.axis_steps_per_mm[axis];
|
||||
}
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
void advance_M905();
|
||||
FORCE_INLINE int get_advance_k() { return extruder_advance_k; }
|
||||
#endif
|
||||
|
||||
private:
|
||||
|
||||
static FORCE_INLINE unsigned short calc_timer(unsigned short step_rate) {
|
||||
@ -335,7 +331,7 @@ class Stepper {
|
||||
OCR1A = acceleration_time;
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
if (current_block->use_advance_lead){
|
||||
if (current_block->use_advance_lead) {
|
||||
current_estep_rate[current_block->active_extruder] = ((unsigned long)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
|
||||
final_estep_rate = (current_block->nominal_rate * current_block->e_speed_multiplier8) >> 8;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user