(nuttx) 01/02: arch/sim/sim_oneshot: Calculate next oneshot time in ticks instead of timespec

[xiaoxiang]

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xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git

commit bf870e51ba0fc9ec3cbb00674b7d695190914dd3
Author: Jukka Laitinen <jukka.laiti...@tii.ae>
AuthorDate: Mon May 12 13:00:39 2025 +0300

    arch/sim/sim_oneshot: Calculate next oneshot time in ticks instead of 
timespec
    
    This removes drift in tick start times, when the base time is always 
rounded to
    tick boundary.
    
    Signed-off-by: Jukka Laitinen <jukka.laiti...@tii.ae>
---
 arch/sim/src/sim/sim_oneshot.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/sim/src/sim/sim_oneshot.c b/arch/sim/src/sim/sim_oneshot.c
index 6148cdea6e..70139543a0 100644
--- a/arch/sim/src/sim/sim_oneshot.c
+++ b/arch/sim/src/sim/sim_oneshot.c
@@ -309,15 +309,15 @@ static int sim_start(struct oneshot_lowerhalf_s *lower,
 {
   struct sim_oneshot_lowerhalf_s *priv =
     (struct sim_oneshot_lowerhalf_s *)lower;
-  struct timespec current;
   irqstate_t flags;
 
   DEBUGASSERT(priv != NULL && callback != NULL && ts != NULL);
 
   flags = enter_critical_section();
 
-  sim_timer_current(&current);
-  clock_timespec_add(&current, ts, &priv->alarm);
+  clock_ticks2time(&priv->alarm,
+                   host_gettime(false) / NSEC_PER_TICK +
+                   clock_time2ticks(ts));
 
   priv->callback = callback;
   priv->arg      = arg;