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-rw-r--r--klippy/chelper/stepcompress.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/klippy/chelper/stepcompress.c b/klippy/chelper/stepcompress.c
index b38b72ad..e261f1d3 100644
--- a/klippy/chelper/stepcompress.c
+++ b/klippy/chelper/stepcompress.c
@@ -259,15 +259,25 @@ stepcompress_alloc(uint32_t oid)
// Fill message id information
void __visible
stepcompress_fill(struct stepcompress *sc, uint32_t max_error
- , uint32_t invert_sdir, int32_t queue_step_msgtag
- , int32_t set_next_step_dir_msgtag)
+ , int32_t queue_step_msgtag, int32_t set_next_step_dir_msgtag)
{
sc->max_error = max_error;
- sc->invert_sdir = !!invert_sdir;
sc->queue_step_msgtag = queue_step_msgtag;
sc->set_next_step_dir_msgtag = set_next_step_dir_msgtag;
}
+// Set the inverted stepper direction flag
+void __visible
+stepcompress_set_invert_sdir(struct stepcompress *sc, uint32_t invert_sdir)
+{
+ invert_sdir = !!invert_sdir;
+ if (invert_sdir != sc->invert_sdir) {
+ sc->invert_sdir = invert_sdir;
+ if (sc->sdir >= 0)
+ sc->sdir ^= 1;
+ }
+}
+
// Helper to free items from the history_list
static void
free_history(struct stepcompress *sc, uint64_t end_clock)