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Fixed some small planner bugs

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This commit is contained in:
Erik van der Zalm 2011-11-15 18:14:00 +01:00
parent 5fd41ae872
commit 805d37f77b
4 changed files with 24 additions and 18 deletions
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5
Marlin/Configuration.h
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@ -11,7 +11,8 @@
// Frequency limit // Frequency limit
// See nophead's blog for more info // See nophead's blog for more info
#define XY_FREQUENCY_LIMIT 15 // Not working OK
//#define XY_FREQUENCY_LIMIT 15
// Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end // Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end
// of the buffer and all stops. This should not be much greater than zero and should only be changed // of the buffer and all stops. This should not be much greater than zero and should only be changed
@ -201,7 +202,7 @@ const bool ENDSTOPS_INVERTING = true; // set to true to invert the logic of the
#define AXIS_RELATIVE_MODES {false, false, false, false} #define AXIS_RELATIVE_MODES {false, false, false, false}
#define MAX_STEP_FREQUENCY 40000L // Max step frequency for Ultimaker (5000 pps / half step) #define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
// default settings // default settings

15
Marlin/planner.cpp
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@ -72,7 +72,7 @@
unsigned long minsegmenttime; unsigned long minsegmenttime;
float max_feedrate[4]; // set the max speeds float max_feedrate[4]; // set the max speeds
float axis_steps_per_unit[4]; float axis_steps_per_unit[4];
long max_acceleration_units_per_sq_second[4]; // Use M201 to override by software unsigned long max_acceleration_units_per_sq_second[4]; // Use M201 to override by software
float minimumfeedrate; float minimumfeedrate;
float acceleration; // Normal acceleration mm/s^2 THIS IS THE DEFAULT ACCELERATION for all moves. M204 SXXXX float acceleration; // Normal acceleration mm/s^2 THIS IS THE DEFAULT ACCELERATION for all moves. M204 SXXXX
float retract_acceleration; // mm/s^2 filament pull-pack and push-forward while standing still in the other axis M204 TXXXX float retract_acceleration; // mm/s^2 filament pull-pack and push-forward while standing still in the other axis M204 TXXXX
@ -153,8 +153,8 @@ inline float intersection_distance(float initial_rate, float final_rate, float a
// Calculates trapezoid parameters so that the entry- and exit-speed is compensated by the provided factors. // Calculates trapezoid parameters so that the entry- and exit-speed is compensated by the provided factors.
void calculate_trapezoid_for_block(block_t *block, float entry_factor, float exit_factor) { void calculate_trapezoid_for_block(block_t *block, float entry_factor, float exit_factor) {
long initial_rate = ceil(block->nominal_rate*entry_factor); // (step/min) unsigned long initial_rate = ceil(block->nominal_rate*entry_factor); // (step/min)
long final_rate = ceil(block->nominal_rate*exit_factor); // (step/min) unsigned long final_rate = ceil(block->nominal_rate*exit_factor); // (step/min)
// Limit minimal step rate (Otherwise the timer will overflow.) // Limit minimal step rate (Otherwise the timer will overflow.)
if(initial_rate <120) {initial_rate=120; } if(initial_rate <120) {initial_rate=120; }
@ -570,7 +570,7 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
long max_x_segment_time = max(x_segment_time[0], max(x_segment_time[1], x_segment_time[2])); long max_x_segment_time = max(x_segment_time[0], max(x_segment_time[1], x_segment_time[2]));
long max_y_segment_time = max(y_segment_time[0], max(y_segment_time[1], y_segment_time[2])); long max_y_segment_time = max(y_segment_time[0], max(y_segment_time[1], y_segment_time[2]));
long min_xy_segment_time =min(max_x_segment_time, max_y_segment_time); long min_xy_segment_time =min(max_x_segment_time, max_y_segment_time);
if(min_xy_segment_time < MAX_FREQ_TIME) speed_factor = min(speed_factor, (float)min_xy_segment_time / (float)MAX_FREQ_TIME); if(min_xy_segment_time < MAX_FREQ_TIME) speed_factor = min(speed_factor, speed_factor * (float)min_xy_segment_time / (float)MAX_FREQ_TIME);
#endif #endif
// Correct the speed // Correct the speed
@ -579,7 +579,12 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
for(int i=0; i < 4; i++) { for(int i=0; i < 4; i++) {
if(abs(current_speed[i]) > max_feedrate[i]) if(abs(current_speed[i]) > max_feedrate[i])
speed_factor = min(speed_factor, max_feedrate[i] / abs(current_speed[i])); speed_factor = min(speed_factor, max_feedrate[i] / abs(current_speed[i]));
// Serial.print("current_speed"); Serial.print(i); Serial.print(" : "); Serial.println(current_speed[i]); /*
if(speed_factor < 0.1) {
Serial.print("speed factor : "); Serial.println(speed_factor);
Serial.print("current_speed"); Serial.print(i); Serial.print(" : "); Serial.println(current_speed[i]);
}
*/
} }
for(unsigned char i=0; i < 4; i++) { for(unsigned char i=0; i < 4; i++) {
current_speed[i] *= speed_factor; current_speed[i] *= speed_factor;

16
Marlin/planner.h
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@ -32,9 +32,9 @@ typedef struct {
// Fields used by the bresenham algorithm for tracing the line // Fields used by the bresenham algorithm for tracing the line
long steps_x, steps_y, steps_z, steps_e; // Step count along each axis long steps_x, steps_y, steps_z, steps_e; // Step count along each axis
long step_event_count; // The number of step events required to complete this block long step_event_count; // The number of step events required to complete this block
volatile long accelerate_until; // The index of the step event on which to stop acceleration long accelerate_until; // The index of the step event on which to stop acceleration
volatile long decelerate_after; // The index of the step event on which to start decelerating long decelerate_after; // The index of the step event on which to start decelerating
volatile long acceleration_rate; // The acceleration rate used for acceleration calculation 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 direction_bits; // The direction bit set for this block (refers to *_DIRECTION_BIT in config.h)
#ifdef ADVANCE #ifdef ADVANCE
// long advance_rate; // long advance_rate;
@ -54,10 +54,10 @@ typedef struct {
unsigned char nominal_length_flag; // Planner flag for nominal speed always reached unsigned char nominal_length_flag; // Planner flag for nominal speed always reached
// Settings for the trapezoid generator // Settings for the trapezoid generator
long nominal_rate; // The nominal step rate for this block in step_events/sec unsigned long nominal_rate; // The nominal step rate for this block in step_events/sec
volatile long initial_rate; // The jerk-adjusted step rate at start of block unsigned long initial_rate; // The jerk-adjusted step rate at start of block
volatile long final_rate; // The minimal rate at exit unsigned long final_rate; // The minimal rate at exit
long acceleration_st; // acceleration steps/sec^2 unsigned long acceleration_st; // acceleration steps/sec^2
volatile char busy; volatile char busy;
} block_t; } block_t;
@ -84,7 +84,7 @@ void check_axes_activity();
extern unsigned long minsegmenttime; extern unsigned long minsegmenttime;
extern float max_feedrate[4]; // set the max speeds extern float max_feedrate[4]; // set the max speeds
extern float axis_steps_per_unit[4]; extern float axis_steps_per_unit[4];
extern long max_acceleration_units_per_sq_second[4]; // Use M201 to override by software extern unsigned long max_acceleration_units_per_sq_second[4]; // Use M201 to override by software
extern float minimumfeedrate; extern float minimumfeedrate;
extern float acceleration; // Normal acceleration mm/s^2 THIS IS THE DEFAULT ACCELERATION for all moves. M204 SXXXX extern float acceleration; // Normal acceleration mm/s^2 THIS IS THE DEFAULT ACCELERATION for all moves. M204 SXXXX
extern float retract_acceleration; // mm/s^2 filament pull-pack and push-forward while standing still in the other axis M204 TXXXX extern float retract_acceleration; // mm/s^2 filament pull-pack and push-forward while standing still in the other axis M204 TXXXX

2
Marlin/stepper.cpp
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@ -253,7 +253,7 @@ inline unsigned short calc_timer(unsigned short step_rate) {
timer = (unsigned short)pgm_read_word_near(table_address); timer = (unsigned short)pgm_read_word_near(table_address);
timer -= (((unsigned short)pgm_read_word_near(table_address+2) * (unsigned char)(step_rate & 0x0007))>>3); timer -= (((unsigned short)pgm_read_word_near(table_address+2) * (unsigned char)(step_rate & 0x0007))>>3);
} }
if(timer < 100) timer = 100; //(20kHz this should never happen) if(timer < 100) { timer = 100; Serial.print("Steprate to high : "); Serial.println(step_rate); }//(20kHz this should never happen)
return timer; return timer;
} }