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-rw-r--r--klippy/chelper/itersolve.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/klippy/chelper/itersolve.c b/klippy/chelper/itersolve.c
index 1094e5f3..9cae55fd 100644
--- a/klippy/chelper/itersolve.c
+++ b/klippy/chelper/itersolve.c
@@ -13,6 +13,11 @@
#include "stepcompress.h" // queue_append_start
#include "trapq.h" // struct move
+
+/****************************************************************
+ * Main iterative solver
+ ****************************************************************/
+
struct timepos {
double time, position;
};
@@ -66,7 +71,7 @@ itersolve_gen_steps_range(struct stepper_kinematics *sk, struct move *m
double start = move_start - m->print_time, end = move_end - m->print_time;
struct timepos last = { start, sk->commanded_pos }, low = last, high = last;
double seek_time_delta = SEEK_TIME_RESET;
- int sdir = !!stepcompress_get_step_dir(sk->sc), is_dir_change = 0;
+ int sdir = stepcompress_get_step_dir(sk->sc), is_dir_change = 0;
for (;;) {
double diff = high.position - last.position, dist = sdir ? diff : -diff;
if (dist >= half_step) {
@@ -90,6 +95,9 @@ itersolve_gen_steps_range(struct stepper_kinematics *sk, struct move *m
if (low.time < high.time)
// The existing search range is still valid
continue;
+ } else if (dist > 0.) {
+ // Avoid rollback if stepper fully reaches target position
+ stepcompress_commit(sk->sc);
} else if (unlikely(dist < -(half_step + .000000001))) {
// Found direction change
is_dir_change = 1;
@@ -127,6 +135,11 @@ itersolve_gen_steps_range(struct stepper_kinematics *sk, struct move *m
return 0;
}
+
+/****************************************************************
+ * Interface functions
+ ****************************************************************/
+
// Check if a move is likely to cause movement on a stepper
static inline int
check_active(struct stepper_kinematics *sk, struct move *m)