Sensor Watch Simulator (#35)

* Put something on screen

* Use the 32bit watch_date_time repr to pass from JS

* Implement periodic callbacks

* Clear display on enabling

* Hook up watch_set_led_color() to SVG (green-only)

* Make debug output full-width

* Remove default Emscripten canvas

* Implement sleep and button clicks

* Fix time zone conversion bug in beats-time app

* Clean up warnings

* Fix pin levels

* Set time zone to browser value (if available)

* Add basic backup data saving

* Silence format specifier warnings in both targets

* Remove unnecessary, copied files

* Use RTC pointer to clear callbacks (if available)

* Use preprocessor define to avoid hardcoding MOVEMENT_NUM_FACES

* Change each face to const preprocessor definition

* Remove Intl.DateTimeFormat usage

* Update shell.html title, header

* Add touch start/end event handlers on SVG buttons

* Update shell.html

* Update folder structure (shared, simulator, hardware under watch-library)

* Tease out shared components from watch_slcd

* Clean up simulator watch_slcd.c inline JS calls

* Fix missing newlines at end of file

* Add simulator warnings (except format, unused-paremter)

* Implement remaining watch_rtc functions

* Fix button bug on mouse down then drag out

* Implement remaining watch_slcd functions

* Link keyboard events to buttons (for keys A, L, M)

* Rewrite event handling (mouse, touch, keyboard) in C

* Set explicit text UTF-8 charset in shell.html

* Address PR comments

* Remove unused directories from include paths

1 files changed, 26 insertions, 1 deletions

diff --git a/movement/movement.c b/movement/movement.c
index 3dc1c060..d15c349f 100644
--- a/movement/movement.c
+++ b/movement/movement.c
@@ -29,6 +29,10 @@
 #include "movement.h"
 #include "movement_config.h"
 
+#if __EMSCRIPTEN__
+#include <emscripten.h>
+#endif
+
 movement_state_t movement_state;
 void * watch_face_contexts[MOVEMENT_NUM_FACES];
 watch_date_time scheduled_tasks[MOVEMENT_NUM_FACES];
@@ -149,7 +153,16 @@ static void _movement_handle_scheduled_tasks(void) {
 
 void movement_request_tick_frequency(uint8_t freq) {
     if (freq == 128) return; // Movement uses the 128 Hz tick internally
-    RTC->MODE2.INTENCLR.reg = 0xFE; // disable all callbacks except the 128 Hz one
+
+    // disable all callbacks except the 128 Hz one
+#if __EMSCRIPTEN__
+    for (int i = 1; i < 128; i = i << 1) {
+        watch_rtc_disable_periodic_callback(i);
+    }
+#else
+    RTC->MODE2.INTENCLR.reg = 0xFE;
+#endif
+
     movement_state.subsecond = 0;
     movement_state.tick_frequency = freq;
     if (freq) watch_rtc_register_periodic_callback(cb_tick, freq);
@@ -215,6 +228,18 @@ void app_init(void) {
     movement_state.light_ticks = -1;
     movement_state.alarm_ticks = -1;
     _movement_reset_inactivity_countdown();
+
+#if __EMSCRIPTEN__
+    int32_t time_zone_offset = EM_ASM_INT({
+        return -new Date().getTimezoneOffset();
+    });
+    for (int i = 0, count = sizeof(movement_timezone_offsets) / sizeof(movement_timezone_offsets[0]); i < count; i++) {
+        if (movement_timezone_offsets[i] == time_zone_offset) {
+            movement_state.settings.bit.time_zone = i;
+            break;
+        }
+    }
+#endif
 }
 
 void app_wake_from_backup(void) {