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Configurable SLOWDOWN divisor (#17171)

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InsanityAutomation 2020-03-15 19:29:18 -04:00 committed by GitHub
parent 3b987dfcec
commit 775a4294fc
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2 changed files with 9 additions and 2 deletions
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6
Marlin/Configuration_adv.h
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@ -753,8 +753,12 @@
// Minimum time that a segment needs to take if the buffer is emptied
#define DEFAULT_MINSEGMENTTIME 20000 // (ms)
// If defined the movements slow down when the look ahead buffer is only half full
// Slow down the machine if the look ahead buffer is (by default) half full.
// Increase the slowdown divisor for larger buffer sizes.
#define SLOWDOWN
#if ENABLED(SLOWDOWN)
#define SLOWDOWN_DIVISOR 2
#endif
// Frequency limit
// See nophead's blog for more info

5
Marlin/src/module/planner.cpp
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@ -2041,7 +2041,10 @@ bool Planner::_populate_block(block_t * const block, bool split_move,
#endif
#if ENABLED(SLOWDOWN)
if (WITHIN(moves_queued, 2, (BLOCK_BUFFER_SIZE) / 2 - 1)) {
#ifndef SLOWDOWN_DIVISOR
#define SLOWDOWN_DIVISOR 2
#endif
if (WITHIN(moves_queued, 2, (BLOCK_BUFFER_SIZE) / (SLOWDOWN_DIVISOR) - 1)) {
if (segment_time_us < settings.min_segment_time_us) {
// buffer is draining, add extra time. The amount of time added increases if the buffer is still emptied more.
const uint32_t nst = segment_time_us + LROUND(2 * (settings.min_segment_time_us - segment_time_us) / moves_queued);