3 files changed, 38 insertions, 0 deletions
diff --git a/events/dune b/events/dune
new file mode 100755
index 0000000..68e2dd2
--- /dev/null
+++ b/events/dune
@@ -0,0 +1,7 @@
+(library
+ (name events)
+ (libraries 
+   brr
+   brr.note
+   )
+)
diff --git a/events/timer.ml b/events/timer.ml
new file mode 100755
index 0000000..def9a81
--- /dev/null
+++ b/events/timer.ml
@@ -0,0 +1,24 @@
+type t = Brr.G.timer_id ref * unit Note.E.send
+
+let create
+  : unit -> (t * unit Note.E.t)
+  = fun () ->
+    let event, send = Note.E.create () in
+    (ref (-1), send), event
+
+let stop
+  : t -> unit
+  = fun (id, _) ->
+    Brr.G.stop_timer !id
+
+let start
+  : t -> float -> unit
+  = fun (id, send) d ->
+
+    Brr.G.stop_timer !id;
+    let timer_id = Brr.G.set_interval
+        ~ms:(int_of_float @@ d *. 1000.)
+        (fun () -> send ()) in
+    ignore @@ Brr.G.set_timeout ~ms:0 send;
+    id:= timer_id;
+
diff --git a/events/timer.mli b/events/timer.mli
new file mode 100755
index 0000000..4bf8a9b
--- /dev/null
+++ b/events/timer.mli
@@ -0,0 +1,7 @@
+type t
+
+val create : unit -> t * unit Note.E.t
+
+val start: t -> float -> unit
+
+val stop: t -> unit