Import of the watch repository from Pebble

tests/stubs/stubs_tick.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "FreeRTOS.h"
+#include "portmacro.h"
+
+#include <stdint.h>
+
+TickType_t milliseconds_to_ticks(uint32_t milliseconds) {
+  return ((uint64_t)milliseconds * configTICK_RATE_HZ) / 1000;
+}
+
+TickType_t ticks_to_milliseconds(uint32_t ticks) {
+  return ((uint64_t)ticks * 1000) / configTICK_RATE_HZ;
+}