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Save another 144b by avoiding a calc_timer copy

This commit is contained in:
Yuri D'Elia 2019-05-26 16:05:41 +02:00
parent 20694aeabc
commit ab478ec281
1 changed files with 10 additions and 1 deletions
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11
Firmware/planner.cpp
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@ -1088,8 +1088,17 @@ Having the real displacement of the head, we can calculate the total movement le
#ifdef LIN_ADVANCE
if (block->use_advance_lead) {
// to save more space we avoid another copy of calc_timer and go through slow division, but we
// still need to replicate the *exact* same step grouping policy (see below)
float advance_speed = (extruder_advance_K * block->e_D_ratio * block->acceleration * cs.axis_steps_per_unit[E_AXIS]);
block->advance_rate = calc_timer(advance_speed, block->advance_step_loops);
if (advance_speed > MAX_STEP_FREQUENCY) advance_speed = MAX_STEP_FREQUENCY;
block->advance_rate = (F_CPU / 8.0) / advance_speed;
if (block->advance_rate > 20000)
block->advance_step_loops = 4;
else if (block->advance_rate > 10000)
block->advance_step_loops = 2;
else
block->advance_step_loops = 1;
#ifdef LA_DEBUG
if (block->advance_step_loops > 2)