1 files changed, 45 insertions, 0 deletions
diff --git a/pw_chre/system_time.cc b/pw_chre/system_time.cc
new file mode 100644
index 000000000..9a9df9a61
--- /dev/null
+++ b/pw_chre/system_time.cc
@@ -0,0 +1,45 @@
+// Copyright 2023 The Pigweed Authors
+//
+// 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
+//
+//     https://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 "chre/platform/system_time.h"
+
+#include "chre/platform/assert.h"
+#include "chre/platform/log.h"
+#include "pw_chrono/system_clock.h"
+
+namespace chre {
+
+namespace {
+
+int64_t estimated_host_time_offset = 0;
+
+}
+
+Nanoseconds SystemTime::getMonotonicTime() {
+  const pw::chrono::SystemClock::time_point now =
+      pw::chrono::SystemClock::now();
+  auto nsecs = std::chrono::duration_cast<std::chrono::nanoseconds>(
+                   now.time_since_epoch())
+                   .count();
+  return Nanoseconds(static_cast<uint64_t>(nsecs));
+}
+
+int64_t SystemTime::getEstimatedHostTimeOffset() {
+  return estimated_host_time_offset;
+}
+
+void SystemTime::setEstimatedHostTimeOffset(int64_t offset) {
+  estimated_host_time_offset = offset;
+}
+
+}  // namespace chre