Apply updated ISR timing code
This commit is contained in:
parent
506d78b2f8
commit
aad9c0ed8d
@ -413,6 +413,12 @@ void Stepper::isr() {
|
||||
step_events_completed++;
|
||||
if (step_events_completed >= current_block->step_event_count) break;
|
||||
}
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
// If we have esteps to execute, fire the next ISR "now"
|
||||
if (e_steps[current_block->active_extruder]) OCR0A = TCNT0 + 2;
|
||||
#endif
|
||||
|
||||
// Calculate new timer value
|
||||
unsigned short timer, step_rate;
|
||||
if (step_events_completed <= (unsigned long)current_block->accelerate_until) {
|
||||
@ -427,7 +433,7 @@ void Stepper::isr() {
|
||||
timer = calc_timer(acc_step_rate);
|
||||
OCR1A = timer;
|
||||
acceleration_time += timer;
|
||||
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
|
||||
if (current_block->use_advance_lead)
|
||||
@ -444,6 +450,9 @@ void Stepper::isr() {
|
||||
|
||||
#endif // ADVANCE or LIN_ADVANCE
|
||||
|
||||
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
||||
eISR_Rate = (timer >> 2) / abs(e_steps[current_block->active_extruder]);
|
||||
#endif
|
||||
}
|
||||
else if (step_events_completed > (unsigned long)current_block->decelerate_after) {
|
||||
MultiU24X32toH16(step_rate, deceleration_time, current_block->acceleration_rate);
|
||||
@ -476,11 +485,20 @@ void Stepper::isr() {
|
||||
old_advance = advance_whole;
|
||||
|
||||
#endif // ADVANCE or LIN_ADVANCE
|
||||
|
||||
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
||||
eISR_Rate = (timer >> 2) / abs(e_steps[current_block->active_extruder]);
|
||||
#endif
|
||||
}
|
||||
else {
|
||||
|
||||
#if ENABLED(LIN_ADVANCE)
|
||||
|
||||
if (current_block->use_advance_lead)
|
||||
current_estep_rate[current_block->active_extruder] = final_estep_rate;
|
||||
|
||||
eISR_Rate = (OCR1A_nominal >> 2) / abs(e_steps[current_block->active_extruder]);
|
||||
|
||||
#endif
|
||||
|
||||
OCR1A = OCR1A_nominal;
|
||||
@ -506,19 +524,7 @@ void Stepper::isr() {
|
||||
|
||||
void Stepper::advance_isr() {
|
||||
|
||||
byte maxesteps = 0;
|
||||
for (uint8_t i = 0; i < EXTRUDERS; i++)
|
||||
if (abs(e_steps[i]) > maxesteps) maxesteps = abs(e_steps[i]);
|
||||
|
||||
if (maxesteps > 3)
|
||||
old_OCR0A += 13; // ~19kHz (250000/13 = 19230 Hz)
|
||||
else if (maxesteps > 2)
|
||||
old_OCR0A += 17; // ~15kHz (250000/17 = 14705 Hz)
|
||||
else if (maxesteps > 1)
|
||||
old_OCR0A += 26; // ~10kHz (250000/26 = 9615 Hz)
|
||||
else
|
||||
old_OCR0A += 52; // ~5kHz (250000/26 = 4807 Hz)
|
||||
|
||||
old_OCR0A += eISR_Rate;
|
||||
OCR0A = old_OCR0A;
|
||||
|
||||
#define STEP_E_ONCE(INDEX) \
|
||||
|
@ -22,7 +22,7 @@
|
||||
|
||||
/**
|
||||
* stepper.h - stepper motor driver: executes motion plans of planner.c using the stepper motors
|
||||
* Part of Grbl
|
||||
* Derived from Grbl
|
||||
*
|
||||
* Copyright (c) 2009-2011 Simen Svale Skogsrud
|
||||
*
|
||||
|
Loading…
Reference in New Issue
Block a user