update simulator rtc counter improvements to match real hardware

diff --git a/watch-library/simulator/watch/watch_rtc.c b/watch-library/simulator/watch/watch_rtc.c
index 7e23e6eeff945977871e50fdf27317b9a8879e39..ad3e5db3609c6ffb9330fc838bdd1eac41aea7b6 100644 (file)
--- a/watch-library/simulator/watch/watch_rtc.c
+++ b/watch-library/simulator/watch/watch_rtc.c
@@ -39,7 +39,6 @@ static uint32_t counter_interval;
 static uint32_t counter;
 static uint32_t reference_timestamp;
 static double next_tick_time;
-static double rtc_start_time;
 
 #define WATCH_RTC_N_COMP_CB 8
 
@@ -111,18 +110,7 @@ unix_timestamp_t watch_rtc_get_unix_time(void) {
 }
 
 rtc_counter_t watch_rtc_get_counter(void) {
-    if (!counter_interval) {
-        return counter; // RTC not running
-    }
-
-    // Calculate current counter from high-precision time
-    double now = EM_ASM_DOUBLE({ return performance.now(); });
-    double elapsed_ms = now - rtc_start_time;
-
-    // Convert elapsed time to RTC ticks (RTC_CNT_HZ = 128 Hz)
-    double elapsed_ticks = (elapsed_ms * RTC_CNT_HZ) / 1000.0;
-
-    return (rtc_counter_t)elapsed_ticks;
+    return counter;
 }
 
 uint32_t watch_rtc_get_frequency(void) {
@@ -183,7 +171,6 @@ static void _watch_schedule_next_tick(void) {
     if (!counter_interval) return;
 
     double now = EM_ASM_DOUBLE({ return performance.now(); });
-    double drift = now - next_tick_time;
 
     // Target interval in ms
     double ms = 1000.0 / (double)RTC_CNT_HZ;
@@ -192,13 +179,12 @@ static void _watch_schedule_next_tick(void) {
     next_tick_time += ms;
     double delay = next_tick_time - now;
 
-    // Ensure we don't schedule negative or zero delays
-    if (delay < 0.1) {
-        delay = 0.1;
-        next_tick_time = now + delay;
+    // If we're behind, schedule immediately
+    if (delay < 0) {
+        delay = 0;
     }
 
-    emscripten_async_call(_watch_increase_counter, NULL, (int)delay);
+    emscripten_async_call(_watch_increase_counter, NULL, delay);
 }
 
 static void _watch_increase_counter(void *userData) {
@@ -385,9 +371,7 @@ void watch_rtc_enable(bool en)
     if (en) {
         // Use drift-correcting timer instead of fixed setInterval
         counter_interval = 1; // Non-zero to indicate enabled
-        rtc_start_time = EM_ASM_DOUBLE({ return performance.now(); });
-        next_tick_time = rtc_start_time;
-        counter = 0;
+        next_tick_time = EM_ASM_DOUBLE({ return performance.now(); });
         _watch_schedule_next_tick();
     } else {
         counter_interval = 0;