chore(light_sensor) handle scheduling errors in pycardium

pycardium/modules/light_sensor.c

@@ -5,7 +5,11 @@
 
 STATIC mp_obj_t mp_light_sensor_start()
 {
-    epic_light_sensor_run();
+    int status = epic_light_sensor_run();
+    if (status == -EBUSY)
+    {
+        mp_raise_msg(&mp_type_RuntimeError, "timer could not be scheduled");
+    }
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(light_sensor_start_obj, mp_light_sensor_start);
@@ -25,7 +29,11 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_0(light_sensor_get_obj, mp_light_sensor_get_readi
 
 STATIC mp_obj_t mp_light_sensor_stop()
 {
-    epic_light_sensor_stop();
+    int status = epic_light_sensor_stop();
+    if (status == -EBUSY)
+    {
+        mp_raise_msg(&mp_type_RuntimeError, "timer could not be scheduled");
+    }
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(light_sensor_stop_obj, mp_light_sensor_stop);