Fix visualizer sleeping too long

The documentation for ugfx gEventWait wait is wrong and the
function takes the time in milliseconds, instead of system ticks.
This caused the the thread to sleep way too long. It also caused
somewhat random sleeping behaviour as the MS2ST function overflows
at around 43 seconds sleep.

The event source is also now initialized correctly, so that the
thread actually can be woken up by events.

visualizer.c

@@ -25,6 +25,9 @@ SOFTWARE.
 #include "visualizer.h"
 #include "config.h"
 #include <string.h>
+#ifdef PROTOCOL_CHIBIOS
+#include "ch.h"
+#endif
 
 #ifdef LCD_ENABLE
 #include "gfx.h"
@@ -67,7 +70,6 @@ static bool same_status(visualizer_keyboard_status_t* status1, visualizer_keyboa
         status1->suspended == status2->suspended;
 }
 
-static GSourceHandle layer_changed_event;
 static bool visualizer_enabled = false;
 
 #define MAX_SIMULTANEOUS_ANIMATIONS 4
@@ -185,8 +187,8 @@ static bool update_keyframe_animation(keyframe_animation_t* animation, visualize
         animation->first_update_of_frame = false;
     }
 
-    int wanted_sleep = animation->need_update ? 10 : animation->time_left_in_frame;
+    systemticks_t wanted_sleep = animation->need_update ? gfxMillisecondsToTicks(10) : (unsigned)animation->time_left_in_frame;
-    if ((unsigned)wanted_sleep < *sleep_time) {
+    if (wanted_sleep < *sleep_time) {
         *sleep_time = wanted_sleep;
     }
 
@@ -345,7 +347,7 @@ static DECLARE_THREAD_FUNCTION(visualizerThread, arg) {
 
     GListener event_listener;
     geventListenerInit(&event_listener);
-    geventAttachSource(&event_listener, layer_changed_event, 0);
+    geventAttachSource(&event_listener, (GSourceHandle)&current_status, 0);
 
     visualizer_keyboard_status_t initial_status = {
         .default_layer = 0xFFFFFFFF,
@@ -435,6 +437,16 @@ static DECLARE_THREAD_FUNCTION(visualizerThread, arg) {
             }
         }
         dprintf("Update took %d, last delta %d, sleep_time %d\n", update_delta, delta, sleep_time);
+#ifdef PROTOCOL_CHIBIOS
+        // The gEventWait function really takes milliseconds, even if the documentation says ticks.
+        // Unfortunately there's no generic ugfx conversion from system time to milliseconds,
+        // so let's do it in a platform dependent way.
+
+        // On windows the system ticks is the same as milliseconds anyway
+        if (sleep_time != TIME_INFINITE) {
+            sleep_time = ST2MS(sleep_time);
+        }
+#endif
         geventEventWait(&event_listener, sleep_time);
     }
 #ifdef LCD_ENABLE
@@ -473,7 +485,7 @@ void visualizer_init(void) {
 
 void update_status(bool changed) {
     if (changed) {
-        GSourceListener* listener = geventGetSourceListener(layer_changed_event, NULL);
+        GSourceListener* listener = geventGetSourceListener((GSourceHandle)&current_status, NULL);
         if (listener) {
             geventSendEvent(listener);
         }