nimble/ll: Update ticks conversions for MCUs with idiv support

We can use simple calculations for MCUs that support idiv. This has also larger range of allowed values on uint32_t values.
apache · Aug 5, 2024 · c8de4cc · c8de4cc
1 parent f4702af
commit c8de4cc
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/nimble/controller/include/controller/ble_ll_tmr.h b/nimble/controller/include/controller/ble_ll_tmr.h
@@ -64,9 +64,17 @@ ble_ll_tmr_u2t(uint32_t usecs)
  return usecs / 32;
 #endif
 #if MYNEWT_VAL(OS_CPUTIME_FREQ) == 32768
+#if __ARM_FEATURE_IDIV
+ if (usecs < 131072) {
+ return (usecs * 32768) / 1000000;
+ } else {
+ return ((uint64_t)usecs * 32768) / 1000000;
+ }
+#else
  if (usecs <= 31249) {
  return (usecs * 137439) / 4194304;
  }
+#endif
 #endif
 
  return os_cputime_usecs_to_ticks(usecs);