ManuelW/grbl-LPC-CoreXY
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implemented a mixture of Sonny's MATLAB and my previous grbl planner

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ontop of the edge planner
examples run byte for byte identical old and new version
This commit is contained in:
Jens Geisler 2013-02-20 14:56:47 +01:00
parent 97d18f0ffe
commit dba26eff91
5 changed files with 131 additions and 150 deletions
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255
planner.c
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@ -22,14 +22,17 @@
/* The ring buffer implementation gleaned from the wiring_serial library by David A. Mellis. */ /* The ring buffer implementation gleaned from the wiring_serial library by David A. Mellis. */
#include <avr/interrupt.h>
#include <inttypes.h> #include <inttypes.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdio.h>
#include "planner.h" #include "planner.h"
#include "nuts_bolts.h" #include "nuts_bolts.h"
#include "stepper.h" #include "stepper.h"
#include "settings.h" #include "settings.h"
#include "config.h" #include "config.h"
#include "protocol.h" #include "protocol.h"
#include "motion_control.h"
#define SOME_LARGE_VALUE 1.0E+38 // Used by rapids and acceleration maximization calculations. Just needs #define SOME_LARGE_VALUE 1.0E+38 // Used by rapids and acceleration maximization calculations. Just needs
// to be larger than any feasible (mm/min)^2 or mm/sec^2 value. // to be larger than any feasible (mm/min)^2 or mm/sec^2 value.
@ -38,6 +41,7 @@ static block_t block_buffer[BLOCK_BUFFER_SIZE]; // A ring buffer for motion ins
static volatile uint8_t block_buffer_head; // Index of the next block to be pushed static volatile uint8_t block_buffer_head; // Index of the next block to be pushed
static volatile uint8_t block_buffer_tail; // Index of the block to process now static volatile uint8_t block_buffer_tail; // Index of the block to process now
static uint8_t next_buffer_head; // Index of the next buffer head static uint8_t next_buffer_head; // Index of the next buffer head
static uint8_t planned_block_tail; // Index of the latest block that is optimally planned
// static *block_t block_buffer_planned; // static *block_t block_buffer_planned;
// Define planner variables // Define planner variables
@ -94,10 +98,10 @@ static uint8_t prev_block_index(uint8_t block_index)
the new initial rate and n_steps until deceleration are computed, since the stepper algorithm the new initial rate and n_steps until deceleration are computed, since the stepper algorithm
already handles acceleration and cruising and just needs to know when to start decelerating. already handles acceleration and cruising and just needs to know when to start decelerating.
*/ */
static void calculate_trapezoid_for_block(block_t *block, float entry_speed_sqr, float exit_speed_sqr) static uint8_t calculate_trapezoid_for_block(block_t *block, uint8_t idx, float entry_speed_sqr, float exit_speed_sqr)
{ {
// Compute new initial rate for stepper algorithm // Compute new initial rate for stepper algorithm
block->initial_rate = ceil(sqrt(entry_speed_sqr)*(RANADE_MULTIPLIER/(60*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic) uint32_t initial_rate = ceil(sqrt(entry_speed_sqr)*(RANADE_MULTIPLIER/(60*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic)
// TODO: Compute new nominal rate if a feedrate override occurs. // TODO: Compute new nominal rate if a feedrate override occurs.
// block->nominal_rate = ceil(feed_rate*(RANADE_MULTIPLIER/(60.0*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic) // block->nominal_rate = ceil(feed_rate*(RANADE_MULTIPLIER/(60.0*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic)
@ -112,19 +116,36 @@ static void calculate_trapezoid_for_block(block_t *block, float entry_speed_sqr,
// Check if this is a pure acceleration block by a intersection distance less than zero. Also // Check if this is a pure acceleration block by a intersection distance less than zero. Also
// prevents signed and unsigned integer conversion errors. // prevents signed and unsigned integer conversion errors.
if (intersect_distance <= 0) { uint32_t decelerate_after= 0;
block->decelerate_after = 0; if (intersect_distance > 0) {
} else {
// Determine deceleration distance (in steps) from nominal speed to exit speed for a trapezoidal profile. // Determine deceleration distance (in steps) from nominal speed to exit speed for a trapezoidal profile.
// Value is never negative. Nominal speed is always greater than or equal to the exit speed. // Value is never negative. Nominal speed is always greater than or equal to the exit speed.
// Computes: steps_decelerate = steps/mm * ( (v_nominal^2 - v_exit^2)/(2*acceleration) ) // Computes: steps_decelerate = steps/mm * ( (v_nominal^2 - v_exit^2)/(2*acceleration) )
block->decelerate_after = ceil(steps_per_mm_div_2_acc * (block->nominal_speed_sqr - exit_speed_sqr)); decelerate_after = ceil(steps_per_mm_div_2_acc * (block->nominal_speed_sqr - exit_speed_sqr));
// The lesser of the two triangle and trapezoid distances always defines the velocity profile. // The lesser of the two triangle and trapezoid distances always defines the velocity profile.
if (block->decelerate_after > intersect_distance) { block->decelerate_after = intersect_distance; } if (decelerate_after > intersect_distance) { decelerate_after = intersect_distance; }
// Finally, check if this is a pure deceleration block. // Finally, check if this is a pure deceleration block.
if (block->decelerate_after > block->step_event_count) { block->decelerate_after = block->step_event_count; } if (decelerate_after > block->step_event_count) { decelerate_after = block->step_event_count; }
}
// safe block adjustment
cli();
uint8_t block_buffer_tail_hold= block_buffer_tail; // store to avoid reading volatile twice
uint8_t block_buffer_head_hold= block_buffer_head; // store to avoid reading volatile twice
uint8_t idx_inside_queue;
// is the current block inside the queue? if not: the stepper overtook us
if(block_buffer_head_hold>=block_buffer_tail_hold) idx_inside_queue= idx>=block_buffer_tail_hold && idx<=block_buffer_head_hold;
else idx_inside_queue= idx<=block_buffer_head_hold || idx>=block_buffer_tail_hold;
if(idx_inside_queue && (idx!=block_buffer_tail_hold || idx==block_buffer_head_hold || !st_is_decelerating())) {
block->decelerate_after= decelerate_after;
block->initial_rate= initial_rate;
sei();
return(true);
} else {
sei();
return(false); // this block is currently being processed by the stepper and it already finished accelerating or the stepper is already finished with this block: we can no longer change anything here
} }
} }
@ -183,95 +204,21 @@ static void calculate_trapezoid_for_block(block_t *block, float entry_speed_sqr,
can execute faster than new blocks can be added, and the planner buffer will then starve and empty, leading can execute faster than new blocks can be added, and the planner buffer will then starve and empty, leading
to weird hiccup-like jerky motions. to weird hiccup-like jerky motions.
*/ */
static void planner_recalculate() static uint8_t planner_recalculate()
{ {
uint8_t current_block_idx= block_buffer_head;
block_t *curr_block = &block_buffer[current_block_idx];
uint8_t plan_unchanged= 1;
// float entry_speed_sqr; if(current_block_idx!=block_buffer_tail) { // we cannot do anything to only one block
// uint8_t block_index = block_buffer_head; float max_entry_speed_sqr;
// block_t *previous = NULL; float next_entry_speed_sqr= 0.0;
// block_t *current = NULL; // loop backwards to possibly postpone deceleration
// block_t *next; while(current_block_idx!=planned_block_tail) { // the second block is the one where we start the forward loop
// while (block_index != block_buffer_tail) { if(current_block_idx==block_buffer_tail) {
// block_index = prev_block_index( block_index ); planned_block_tail= current_block_idx;
// next = current; break;
// current = previous; }
// previous = &block_buffer[block_index];
//
// if (next && current) {
// if (next != block_buffer_planned) {
// if (previous == block_buffer_tail) { block_buffer_planned = next; }
// else {
//
// if (current->entry_speed_sqr != current->max_entry_speed_sqr) {
// current->recalculate_flag = true; // Almost always changes. So force recalculate.
// entry_speed_sqr = next->entry_speed_sqr + 2*current->acceleration*current->millimeters;
// if (entry_speed_sqr < current->max_entry_speed_sqr) {
// current->entry_speed_sqr = entry_speed_sqr;
// } else {
// current->entry_speed_sqr = current->max_entry_speed_sqr;
// }
// } else {
// block_buffer_planned = current;
// }
// }
// } else {
// break;
// }
// }
// }
//
// block_index = block_buffer_planned;
// next = &block_buffer[block_index];
// current = prev_block_index(block_index);
// while (block_index != block_buffer_head) {
//
// // If the current block is an acceleration block, but it is not long enough to complete the
// // full speed change within the block, we need to adjust the exit speed accordingly. Entry
// // speeds have already been reset, maximized, and reverse planned by reverse planner.
// if (current->entry_speed_sqr < next->entry_speed_sqr) {
// // Compute block exit speed based on the current block speed and distance
// // Computes: v_exit^2 = v_entry^2 + 2*acceleration*distance
// entry_speed_sqr = current->entry_speed_sqr + 2*current->acceleration*current->millimeters;
//
// // If it's less than the stored value, update the exit speed and set recalculate flag.
// if (entry_speed_sqr < next->entry_speed_sqr) {
// next->entry_speed_sqr = entry_speed_sqr;
// next->recalculate_flag = true;
// }
// }
//
// // Recalculate if current block entry or exit junction speed has changed.
// if (current->recalculate_flag || next->recalculate_flag) {
// // NOTE: Entry and exit factors always > 0 by all previous logic operations.
// calculate_trapezoid_for_block(current, current->entry_speed_sqr, next->entry_speed_sqr);
// current->recalculate_flag = false; // Reset current only to ensure next trapezoid is computed
// }
//
// current = next;
// next = &block_buffer[block_index];
// block_index = next_block_index( block_index );
// }
//
// // Last/newest block in buffer. Exit speed is set with MINIMUM_PLANNER_SPEED. Always recalculated.
// calculate_trapezoid_for_block(next, next->entry_speed_sqr, MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED);
// next->recalculate_flag = false;
// TODO: No over-write protection exists for the executing block. For most cases this has proven to be ok, but
// for feed-rate overrides, something like this is essential. Place a request here to the stepper driver to
// find out where in the planner buffer is the a safe place to begin re-planning from.
// if (block_buffer_head != block_buffer_tail) {
float entry_speed_sqr;
// Perform reverse planner pass. Skip the head(end) block since it is already initialized, and skip the
// tail(first) block to prevent over-writing of the initial entry speed.
uint8_t block_index = prev_block_index( block_buffer_head ); // Assume buffer is not empty.
block_t *current = &block_buffer[block_index]; // Head block-1 = Newly appended block
block_t *next;
if (block_index != block_buffer_tail) { block_index = prev_block_index( block_index ); }
while (block_index != block_buffer_tail) {
next = current;
current = &block_buffer[block_index];
// TODO: Determine maximum entry speed at junction for feedrate overrides, since they can alter // TODO: Determine maximum entry speed at junction for feedrate overrides, since they can alter
// the planner nominal speeds at any time. This calc could be done in the override handler, but // the planner nominal speeds at any time. This calc could be done in the override handler, but
@ -281,64 +228,80 @@ static void planner_recalculate()
// If entry speed is already at the maximum entry speed, no need to recheck. Block is cruising. // If entry speed is already at the maximum entry speed, no need to recheck. Block is cruising.
// If not, block in state of acceleration or deceleration. Reset entry speed to maximum and // If not, block in state of acceleration or deceleration. Reset entry speed to maximum and
// check for maximum allowable speed reductions to ensure maximum possible planned speed. // check for maximum allowable speed reductions to ensure maximum possible planned speed.
if (current->entry_speed_sqr != current->max_entry_speed_sqr) { if (curr_block->entry_speed_sqr != curr_block->max_entry_speed_sqr) {
// default if next_entry_speed_sqr > curr_block->max_entry_speed_sqr || max_entry_speed_sqr > curr_block->max_entry_speed_sqr
curr_block->entry_speed_sqr = curr_block->max_entry_speed_sqr;
current->entry_speed_sqr = current->max_entry_speed_sqr; if (next_entry_speed_sqr < curr_block->max_entry_speed_sqr) {
current->recalculate_flag = true; // Almost always changes. So force recalculate.
if (next->entry_speed_sqr < current->max_entry_speed_sqr) {
// Computes: v_entry^2 = v_exit^2 + 2*acceleration*distance // Computes: v_entry^2 = v_exit^2 + 2*acceleration*distance
entry_speed_sqr = next->entry_speed_sqr + 2*current->acceleration*current->millimeters; max_entry_speed_sqr = next_entry_speed_sqr + 2*curr_block->acceleration*curr_block->millimeters;
if (entry_speed_sqr < current->max_entry_speed_sqr) { if (max_entry_speed_sqr < curr_block->max_entry_speed_sqr) {
current->entry_speed_sqr = entry_speed_sqr; curr_block->entry_speed_sqr = max_entry_speed_sqr;
} }
} }
} }
block_index = prev_block_index( block_index ); next_entry_speed_sqr= curr_block->entry_speed_sqr;
current_block_idx= prev_block_index( current_block_idx );
curr_block= &block_buffer[current_block_idx];
} }
// Perform forward planner pass. Begins junction speed adjustments after tail(first) block. // loop forward, adjust exit speed to not exceed max accelleration
// Also recalculate trapezoids, block by block, as the forward pass completes the plan. block_t *next_block;
block_index = next_block_index(block_buffer_tail); uint8_t next_block_idx;
next = &block_buffer[block_buffer_tail]; // Places tail(first) block into current float max_exit_speed_sqr;
while (block_index != block_buffer_head) { while(current_block_idx!=block_buffer_head) {
current = next; next_block_idx= next_block_index(current_block_idx);
next = &block_buffer[block_index]; next_block = &block_buffer[next_block_idx];
// If the current block is an acceleration block, but it is not long enough to complete the // If the current block is an acceleration block, but it is not long enough to complete the
// full speed change within the block, we need to adjust the exit speed accordingly. Entry // full speed change within the block, we need to adjust the exit speed accordingly. Entry
// speeds have already been reset, maximized, and reverse planned by reverse planner. // speeds have already been reset, maximized, and reverse planned by reverse planner.
if (current->entry_speed_sqr < next->entry_speed_sqr) { if (curr_block->entry_speed_sqr < next_block->entry_speed_sqr) {
// Compute block exit speed based on the current block speed and distance // Compute block exit speed based on the current block speed and distance
// Computes: v_exit^2 = v_entry^2 + 2*acceleration*distance // Computes: v_exit^2 = v_entry^2 + 2*acceleration*distance
entry_speed_sqr = current->entry_speed_sqr + 2*current->acceleration*current->millimeters; max_exit_speed_sqr = curr_block->entry_speed_sqr + 2*curr_block->acceleration*curr_block->millimeters;
// If it's less than the stored value, update the exit speed and set recalculate flag. } else {
if (entry_speed_sqr < next->entry_speed_sqr) { max_exit_speed_sqr= SOME_LARGE_VALUE;
next->entry_speed_sqr = entry_speed_sqr; }
next->recalculate_flag = true;
// adjust max_exit_speed_sqr in case this is a deceleration block or max accel cannot be reached
if(max_exit_speed_sqr>next_block->entry_speed_sqr) {
max_exit_speed_sqr= next_block->entry_speed_sqr;
} else {
// this block has reached max acceleration, it is optimal
planned_block_tail= next_block_idx;
}
if(calculate_trapezoid_for_block(curr_block, current_block_idx, curr_block->entry_speed_sqr, max_exit_speed_sqr)) {
next_block->entry_speed_sqr= max_exit_speed_sqr;
plan_unchanged= 0;
} else if(!plan_unchanged) { // we started to modify the plan an then got overtaken by the stepper executing the plan: this is bad
return(0);
}
// Check if the next block entry speed is at max_entry_speed. If so, move the planned pointer, since
// this entry speed cannot be improved anymore and all prior blocks have been completed and optimally planned.
if(next_block->entry_speed_sqr>=next_block->max_entry_speed_sqr) {
planned_block_tail= next_block_idx;
}
current_block_idx= next_block_idx;
curr_block= next_block;
} }
} }
// Recalculate if current block entry or exit junction speed has changed. if(!calculate_trapezoid_for_block(curr_block, current_block_idx, curr_block->entry_speed_sqr, MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED)) {
if (current->recalculate_flag || next->recalculate_flag) { // this can only happen to the first block in the queue? so we dont need to clear or stop anything
// NOTE: Entry and exit factors always > 0 by all previous logic operations. return(0);
calculate_trapezoid_for_block(current, current->entry_speed_sqr, next->entry_speed_sqr); } else
current->recalculate_flag = false; // Reset current only to ensure next trapezoid is computed return(1);
}
block_index = next_block_index( block_index );
}
// Last/newest block in buffer. Exit speed is set with MINIMUM_PLANNER_SPEED. Always recalculated.
calculate_trapezoid_for_block(next, next->entry_speed_sqr, MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED);
next->recalculate_flag = false;
// }
} }
void plan_init() void plan_init()
{ {
block_buffer_tail = block_buffer_head; block_buffer_tail = block_buffer_head= planned_block_tail;
next_buffer_head = next_block_index(block_buffer_head); next_buffer_head = next_block_index(block_buffer_head);
// block_buffer_planned = block_buffer_head; // block_buffer_planned = block_buffer_head;
memset(&pl, 0, sizeof(pl)); // Clear planner struct memset(&pl, 0, sizeof(pl)); // Clear planner struct
@ -409,7 +372,7 @@ void plan_buffer_line(float x, float y, float z, float feed_rate, uint8_t invert
// Compute path vector in terms of absolute step target and current positions // Compute path vector in terms of absolute step target and current positions
float delta_mm[N_AXIS]; float delta_mm[N_AXIS];
delta_mm[X_AXIS] = x-pl.last_x; delta_mm[X_AXIS] = x-pl.last_x; // what difference would it make to use block->steps_x/settings.steps_per_mm[X_AXIS]; instead?
delta_mm[Y_AXIS] = y-pl.last_y; delta_mm[Y_AXIS] = y-pl.last_y;
delta_mm[Z_AXIS] = z-pl.last_z; delta_mm[Z_AXIS] = z-pl.last_z;
block->millimeters = sqrt(delta_mm[X_AXIS]*delta_mm[X_AXIS] + delta_mm[Y_AXIS]*delta_mm[Y_AXIS] + block->millimeters = sqrt(delta_mm[X_AXIS]*delta_mm[X_AXIS] + delta_mm[Y_AXIS]*delta_mm[Y_AXIS] +
@ -448,13 +411,14 @@ void plan_buffer_line(float x, float y, float z, float feed_rate, uint8_t invert
block->nominal_rate = ceil(feed_rate*(RANADE_MULTIPLIER/(60.0*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic) block->nominal_rate = ceil(feed_rate*(RANADE_MULTIPLIER/(60.0*ISR_TICKS_PER_SECOND))); // (mult*mm/isr_tic)
// Compute the acceleration and distance traveled per step event for the stepper algorithm. // Compute the acceleration and distance traveled per step event for the stepper algorithm.
// TODO: obsolete?
block->rate_delta = ceil(block->acceleration* block->rate_delta = ceil(block->acceleration*
((RANADE_MULTIPLIER/(60.0*60.0))/(ISR_TICKS_PER_SECOND*ACCELERATION_TICKS_PER_SECOND))); // (mult*mm/isr_tic/accel_tic) ((RANADE_MULTIPLIER/(60.0*60.0))/(ISR_TICKS_PER_SECOND*ACCELERATION_TICKS_PER_SECOND))); // (mult*mm/isr_tic/accel_tic)
block->d_next = ceil((block->millimeters*RANADE_MULTIPLIER)/block->step_event_count); // (mult*mm/step) block->d_next = ceil((block->millimeters*RANADE_MULTIPLIER)/block->step_event_count); // (mult*mm/step)
// Compute direction bits. Bit enabled always means direction is negative. // Compute direction bits. Bit enabled always means direction is negative.
block->direction_bits = 0; block->direction_bits = 0;
if (unit_vec[X_AXIS] < 0) { block->direction_bits |= (1<<X_DIRECTION_BIT); } if (unit_vec[X_AXIS] < 0) { block->direction_bits |= (1<<X_DIRECTION_BIT); } // maybe more efficient to be calculated together with block->steps_x
if (unit_vec[Y_AXIS] < 0) { block->direction_bits |= (1<<Y_DIRECTION_BIT); } if (unit_vec[Y_AXIS] < 0) { block->direction_bits |= (1<<Y_DIRECTION_BIT); }
if (unit_vec[Z_AXIS] < 0) { block->direction_bits |= (1<<Z_DIRECTION_BIT); } if (unit_vec[Z_AXIS] < 0) { block->direction_bits |= (1<<Z_DIRECTION_BIT); }
@ -474,8 +438,8 @@ void plan_buffer_line(float x, float y, float z, float feed_rate, uint8_t invert
// just follow the arc circle defined here. The Arduino doesn't have the CPU cycles to perform // just follow the arc circle defined here. The Arduino doesn't have the CPU cycles to perform
// a continuous mode path, but ARM-based microcontrollers most certainly do. // a continuous mode path, but ARM-based microcontrollers most certainly do.
// Skip first block or when previous_nominal_speed is used as a flag for homing and offset cycles.
block->max_entry_speed_sqr = MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED; block->max_entry_speed_sqr = MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED;
// Skip first block or when previous_nominal_speed is used as a flag for homing and offset cycles.
if ((block_buffer_head != block_buffer_tail) && (pl.previous_nominal_speed_sqr > 0.0)) { if ((block_buffer_head != block_buffer_tail) && (pl.previous_nominal_speed_sqr > 0.0)) {
// Compute cosine of angle between previous and current path. (prev_unit_vec is negative) // Compute cosine of angle between previous and current path. (prev_unit_vec is negative)
// NOTE: Max junction velocity is computed without sin() or acos() by trig half angle identity. // NOTE: Max junction velocity is computed without sin() or acos() by trig half angle identity.
@ -496,13 +460,11 @@ void plan_buffer_line(float x, float y, float z, float feed_rate, uint8_t invert
} }
} }
// Initialize block entry speed. Compute block entry velocity backwards from user-defined MINIMUM_PLANNER_SPEED. // Initialize block entry speed
// TODO: This could be moved to the planner recalculate function. block->entry_speed_sqr = MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED;
block->entry_speed_sqr = min( block->max_entry_speed_sqr,
MINIMUM_PLANNER_SPEED*MINIMUM_PLANNER_SPEED + 2*block->acceleration*block->millimeters);
// Set new block to be recalculated for conversion to stepper data. // Set new block to be recalculated for conversion to stepper data.
block->recalculate_flag = true; block->recalculate_flag = true; // TODO: obsolete?
// Update previous path unit_vector and nominal speed (squared) // Update previous path unit_vector and nominal speed (squared)
memcpy(pl.previous_unit_vec, unit_vec, sizeof(unit_vec)); // pl.previous_unit_vec[] = unit_vec[] memcpy(pl.previous_unit_vec, unit_vec, sizeof(unit_vec)); // pl.previous_unit_vec[] = unit_vec[]
@ -514,11 +476,20 @@ void plan_buffer_line(float x, float y, float z, float feed_rate, uint8_t invert
pl.last_y = y; pl.last_y = y;
pl.last_z = z; pl.last_z = z;
if(!planner_recalculate()) {
// TODO: make alarm informative
if (sys.state != STATE_ALARM) {
if (bit_isfalse(sys.execute,EXEC_ALARM)) {
mc_reset(); // Initiate system kill.
sys.execute |= EXEC_CRIT_EVENT; // Indicate hard limit critical event
}
}
}
// Update buffer head and next buffer head indices // Update buffer head and next buffer head indices
// Mind that updating block_buffer_head after the planner changes the planner logic a bit
block_buffer_head = next_buffer_head; block_buffer_head = next_buffer_head;
next_buffer_head = next_block_index(block_buffer_head); next_buffer_head = next_block_index(block_buffer_head);
planner_recalculate();
} }
// Reset the planner position vectors. Called by the system abort/initialization routine. // Reset the planner position vectors. Called by the system abort/initialization routine.

1
sim/avr/interrupt.c
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@ -40,3 +40,4 @@ uint16_t pcmsk0;
uint16_t pcicr; uint16_t pcicr;
void sei() {}; void sei() {};
void cli() {};

1
sim/avr/interrupt.h
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@ -49,6 +49,7 @@ extern uint16_t pcicr;
// enable interrupts does nothing in the simulation environment // enable interrupts does nothing in the simulation environment
void sei(); void sei();
void cli();
// dummy macros for interrupt related registers // dummy macros for interrupt related registers
#define TIMSK0 timsk0 #define TIMSK0 timsk0

6
stepper.c
View File

@ -62,6 +62,7 @@ static uint8_t out_bits; // The next stepping-bits to be output
// this blocking variable is no longer needed. Only here for safety reasons. // this blocking variable is no longer needed. Only here for safety reasons.
static volatile uint8_t busy; // True when "Stepper Driver Interrupt" is being serviced. Used to avoid retriggering that handler. static volatile uint8_t busy; // True when "Stepper Driver Interrupt" is being serviced. Used to avoid retriggering that handler.
// __________________________ // __________________________
// /| |\ _________________ ^ // /| |\ _________________ ^
// / | | \ /| |\ | // / | | \ /| |\ |
@ -380,3 +381,8 @@ void st_cycle_reinitialize()
sys.state = STATE_IDLE; sys.state = STATE_IDLE;
} }
} }
uint8_t st_is_decelerating() {
return st.ramp_type == DECEL_RAMP;
}

2
stepper.h
View File

@ -45,4 +45,6 @@ void st_cycle_reinitialize();
// Initiates a feed hold of the running program // Initiates a feed hold of the running program
void st_feed_hold(); void st_feed_hold();
uint8_t st_is_decelerating();
#endif #endif