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More 2nd extruder implementation. (Not usable)

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Advance (not tested)
master
Erik van der Zalm 13 years ago
parent 0bc9daa4f7
commit 6b86f15686
4 changed files with 51 additions and 34 deletions
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4
Marlin/Configuration.h
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@ -223,11 +223,11 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th
#define DEFAULT_AXIS_STEPS_PER_UNIT {78.7402,78.7402,200*8/3,760*1.1} // default steps per unit for ultimaker
//#define DEFAULT_AXIS_STEPS_PER_UNIT {40, 40, 3333.92, 67} //sells mendel with v9 extruder
#define DEFAULT_MAX_FEEDRATE {500, 500, 5, 200000} // (mm/sec)
#define DEFAULT_MAX_FEEDRATE {500, 500, 5, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {9000,9000,100,10000} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 7000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts
#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts
#define DEFAULT_MINIMUMFEEDRATE 0.0 // minimum feedrate
#define DEFAULT_MINTRAVELFEEDRATE 0.0

15
Marlin/planner.cpp
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@ -489,12 +489,21 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
if (target[Z_AXIS] < position[Z_AXIS]) { block->direction_bits |= (1<<Z_AXIS); }
if (target[E_AXIS] < position[E_AXIS]) { block->direction_bits |= (1<<E_AXIS); }
block->active_extruder = extruder;
//enable active axes
if(block->steps_x != 0) enable_x();
if(block->steps_y != 0) enable_y();
if(block->steps_z != 0) enable_z();
if(block->steps_e != 0) enable_e();
if(extruder == 0) {
if(block->steps_e != 0) enable_e();
}
#if (EXTRUDERS > 1)
if(extruder == 1) {
if(block->steps_e != 0) enable_e1();
}
#endif
float delta_mm[4];
delta_mm[X_AXIS] = (target[X_AXIS]-position[X_AXIS])/axis_steps_per_unit[X_AXIS];
delta_mm[Y_AXIS] = (target[Y_AXIS]-position[Y_AXIS])/axis_steps_per_unit[Y_AXIS];
@ -713,7 +722,7 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
else {
long acc_dist = estimate_acceleration_distance(0, block->nominal_rate, block->acceleration_st);
float advance = (STEPS_PER_CUBIC_MM_E * EXTRUDER_ADVANCE_K) *
(block->speed_e * block->speed_e * EXTRUTION_AREA * EXTRUTION_AREA / 3600.0)*65536;
(current_speed[E_AXIS] * current_speed[E_AXIS] * EXTRUTION_AREA * EXTRUTION_AREA / 3600.0)*65536;
block->advance = advance;
if(acc_dist == 0) {
block->advance_rate = 0;

9
Marlin/planner.h
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@ -37,11 +37,12 @@ typedef struct {
long decelerate_after; // The index of the step event on which to start decelerating
long acceleration_rate; // The acceleration rate used for acceleration calculation
unsigned char direction_bits; // The direction bit set for this block (refers to *_DIRECTION_BIT in config.h)
unsigned char active_extruder; // Selects the active extruder
#ifdef ADVANCE
// long advance_rate;
// volatile long initial_advance;
// volatile long final_advance;
// float advance;
long advance_rate;
volatile long initial_advance;
volatile long final_advance;
float advance;
#endif
// Fields used by the motion planner to manage acceleration

57
Marlin/stepper.cpp
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@ -383,8 +383,9 @@ ISR(TIMER1_COMPA_vect)
}
#endif //!ADVANCE
for(int8_t i=0; i < step_loops; i++) { // Take multiple steps per interrupt (For high speed moves)
MSerial.checkRx();
/*
MSerial.checkRx(); // Check for serial chars.
#ifdef ADVANCE
counter_e += current_block->steps_e;
if (counter_e > 0) {
counter_e -= current_block->step_event_count;
@ -399,15 +400,11 @@ ISR(TIMER1_COMPA_vect)
CRITICAL_SECTION_END;
}
}
*/
/*
// Do E steps + advance steps
CRITICAL_SECTION_START;
e_steps += ((advance >> 16) - old_advance);
CRITICAL_SECTION_END;
old_advance = advance >> 16;
*/
#endif //ADVANCE
counter_x += current_block->steps_x;
if (counter_x > 0) {
WRITE(X_STEP_PIN, HIGH);
@ -461,7 +458,9 @@ ISR(TIMER1_COMPA_vect)
OCR1A = timer;
acceleration_time += timer;
#ifdef ADVANCE
advance += advance_rate;
for(int8_t i=0; i < step_loops; i++) {
advance += advance_rate;
}
#endif
}
else if (step_events_completed > current_block->decelerate_after) {
@ -483,7 +482,9 @@ ISR(TIMER1_COMPA_vect)
OCR1A = timer;
deceleration_time += timer;
#ifdef ADVANCE
advance -= advance_rate;
for(int8_t i=0; i < step_loops; i++) {
advance -= advance_rate;
}
if(advance < final_advance)
advance = final_advance;
#endif //ADVANCE
@ -491,7 +492,7 @@ ISR(TIMER1_COMPA_vect)
else {
OCR1A = OCR1A_nominal;
}
// If current block is finished, reset pointer
if (step_events_completed >= current_block->step_event_count) {
current_block = NULL;
@ -506,22 +507,24 @@ ISR(TIMER1_COMPA_vect)
// Timer 0 is shared with millies
ISR(TIMER0_COMPA_vect)
{
// Critical section needed because Timer 1 interrupt has higher priority.
// The pin set functions are placed on trategic position to comply with the stepper driver timing.
WRITE(E_STEP_PIN, LOW);
old_OCR0A += 25; // ~10kHz interrupt
OCR0A = old_OCR0A;
// Set E direction (Depends on E direction + advance)
if (e_steps < 0) {
WRITE(E_DIR_PIN,INVERT_E_DIR);
e_steps++;
WRITE(E_STEP_PIN, HIGH);
}
if (e_steps > 0) {
WRITE(E_DIR_PIN,!INVERT_E_DIR);
e_steps--;
WRITE(E_STEP_PIN, HIGH);
for(unsigned char i=0; i<4;) {
WRITE(E_STEP_PIN, LOW);
if (e_steps == 0) break;
i++;
if (e_steps < 0) {
WRITE(E_DIR_PIN,INVERT_E_DIR);
e_steps++;
WRITE(E_STEP_PIN, HIGH);
}
if (e_steps > 0) {
WRITE(E_DIR_PIN,!INVERT_E_DIR);
e_steps--;
WRITE(E_STEP_PIN, HIGH);
}
}
old_OCR0A += 25; // 10kHz interrupt
OCR0A = old_OCR0A;
}
#endif // ADVANCE
@ -638,6 +641,10 @@ void st_init()
ENABLE_STEPPER_DRIVER_INTERRUPT();
#ifdef ADVANCE
#if defined(TCCR0A) && defined(WGM01)
TCCR0A &= ~(1<<WGM01);
TCCR0A &= ~(1<<WGM00);
#endif
e_steps = 0;
TIMSK0 |= (1<<OCIE0A);
#endif //ADVANCE

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