andrey
/
Marlin_FB4S
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Some advance modifications

pull/1/head
Erik van der Zalm 13 years ago
parent
6b86f15686
commit
af22e9cd38
3 changed files with 41 additions and 18 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 4
      Marlin/Configuration.h
  2. 12
      Marlin/planner.cpp
  3. 43
      Marlin/stepper.cpp

4
Marlin/Configuration.h
View File

@ -278,8 +278,8 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th
#ifdef ADVANCE
#define EXTRUDER_ADVANCE_K .3
#define D_FILAMENT 1.7
#define STEPS_MM_E 65
#define D_FILAMENT 2.85
#define STEPS_MM_E 836
#define EXTRUTION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
#define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUTION_AREA)

12
Marlin/planner.cpp
View File

@ -198,7 +198,6 @@ void calculate_trapezoid_for_block(block_t *block, float entry_factor, float exi
// block->accelerate_until = accelerate_steps;
// block->decelerate_after = accelerate_steps+plateau_steps;
CRITICAL_SECTION_START; // Fill variables used by the stepper in a critical section
if(block->busy == false) { // Don't update variables if block is busy.
block->accelerate_until = accelerate_steps;
@ -482,7 +481,7 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
// Bail if this is a zero-length block
if (block->step_event_count <=dropsegments) { return; };
// Compute direction bits for this block
// Compute direction bits for this block
block->direction_bits = 0;
if (target[X_AXIS] < position[X_AXIS]) { block->direction_bits |= (1<<X_AXIS); }
if (target[Y_AXIS] < position[Y_AXIS]) { block->direction_bits |= (1<<Y_AXIS); }
@ -722,7 +721,7 @@ 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) *
(current_speed[E_AXIS] * current_speed[E_AXIS] * EXTRUTION_AREA * EXTRUTION_AREA / 3600.0)*65536;
(current_speed[E_AXIS] * current_speed[E_AXIS] * EXTRUTION_AREA * EXTRUTION_AREA)*256;
block->advance = advance;
if(acc_dist == 0) {
block->advance_rate = 0;
@ -731,6 +730,13 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
block->advance_rate = advance / (float)acc_dist;
}
}
/*
SERIAL_ECHO_START;
SERIAL_ECHOPGM("advance :");
SERIAL_ECHO(block->advance/256.0);
SERIAL_ECHOPGM("advance rate :");
SERIAL_ECHOLN(block->advance_rate/256.0);
*/
#endif // ADVANCE

43
Marlin/stepper.cpp
View File

@ -55,9 +55,9 @@ static long counter_x, // Counter variables for the bresenham line tracer
volatile static unsigned long step_events_completed; // The number of step events executed in the current block
#ifdef ADVANCE
static long advance_rate, advance, final_advance = 0;
static short old_advance = 0;
static long old_advance = 0;
#endif
static short e_steps;
static long e_steps;
static unsigned char busy = false; // TRUE when SIG_OUTPUT_COMPARE1A is being serviced. Used to avoid retriggering that handler.
static long acceleration_time, deceleration_time;
//static unsigned long accelerate_until, decelerate_after, acceleration_rate, initial_rate, final_rate, nominal_rate;
@ -253,6 +253,9 @@ FORCE_INLINE void trapezoid_generator_reset() {
#ifdef ADVANCE
advance = current_block->initial_advance;
final_advance = current_block->final_advance;
// Do E steps + advance steps
e_steps += ((advance >>8) - old_advance);
old_advance = advance >>8;
#endif
deceleration_time = 0;
// step_rate to timer interval
@ -260,6 +263,17 @@ FORCE_INLINE void trapezoid_generator_reset() {
acceleration_time = calc_timer(acc_step_rate);
OCR1A = acceleration_time;
OCR1A_nominal = calc_timer(current_block->nominal_rate);
// SERIAL_ECHO_START;
// SERIAL_ECHOPGM("advance :");
// SERIAL_ECHO(current_block->advance/256.0);
// SERIAL_ECHOPGM("advance rate :");
// SERIAL_ECHO(current_block->advance_rate/256.0);
// SERIAL_ECHOPGM("initial advance :");
// SERIAL_ECHO(current_block->initial_advance/256.0);
// SERIAL_ECHOPGM("final advance :");
// SERIAL_ECHOLN(current_block->final_advance/256.0);
}
// "The Stepper Driver Interrupt" - This timer interrupt is the workhorse.
@ -382,6 +396,9 @@ ISR(TIMER1_COMPA_vect)
count_direction[E_AXIS]=-1;
}
#endif //!ADVANCE
for(int8_t i=0; i < step_loops; i++) { // Take multiple steps per interrupt (For high speed moves)
MSerial.checkRx(); // Check for serial chars.
@ -390,19 +407,12 @@ ISR(TIMER1_COMPA_vect)
if (counter_e > 0) {
counter_e -= current_block->step_event_count;
if ((out_bits & (1<<E_AXIS)) != 0) { // - direction
CRITICAL_SECTION_START;
e_steps--;
CRITICAL_SECTION_END;
}
else {
CRITICAL_SECTION_START;
e_steps++;
CRITICAL_SECTION_END;
}
}
// Do E steps + advance steps
e_steps += ((advance >> 16) - old_advance);
old_advance = advance >> 16;
#endif //ADVANCE
counter_x += current_block->steps_x;
@ -461,6 +471,11 @@ ISR(TIMER1_COMPA_vect)
for(int8_t i=0; i < step_loops; i++) {
advance += advance_rate;
}
//if(advance > current_block->advance) advance = current_block->advance;
// Do E steps + advance steps
e_steps += ((advance >>8) - old_advance);
old_advance = advance >>8;
#endif
}
else if (step_events_completed > current_block->decelerate_after) {
@ -485,8 +500,10 @@ ISR(TIMER1_COMPA_vect)
for(int8_t i=0; i < step_loops; i++) {
advance -= advance_rate;
}
if(advance < final_advance)
advance = final_advance;
if(advance < final_advance) advance = final_advance;
// Do E steps + advance steps
e_steps += ((advance >>8) - old_advance);
old_advance = advance >>8;
#endif //ADVANCE
}
else {
@ -507,7 +524,7 @@ ISR(TIMER1_COMPA_vect)
// Timer 0 is shared with millies
ISR(TIMER0_COMPA_vect)
{
old_OCR0A += 25; // ~10kHz interrupt
old_OCR0A += 52; // ~10kHz interrupt (250000 / 26 = 9615kHz)
OCR0A = old_OCR0A;
// Set E direction (Depends on E direction + advance)
for(unsigned char i=0; i<4;) {
@ -519,7 +536,7 @@ ISR(TIMER1_COMPA_vect)
e_steps++;
WRITE(E_STEP_PIN, HIGH);
}
if (e_steps > 0) {
else if (e_steps > 0) {
WRITE(E_DIR_PIN,!INVERT_E_DIR);
e_steps--;
WRITE(E_STEP_PIN, HIGH);

Write Preview
Loading…
Cancel
Save