.. # ******************************************************************************* # Copyright (c) 2024 Contributors to the Eclipse Foundation # # See the NOTICE file(s) distributed with this work for additional # information regarding copyright ownership. # # This program and the accompanying materials are made available under the # terms of the Apache License Version 2.0 which is available at # https://www.apache.org/licenses/LICENSE-2.0 # # SPDX-License-Identifier: Apache-2.0 # ******************************************************************************* TimeDaemon Documentation ======================== This documentation describes the **TimeDaemon** and the **score::time** module. .. contents:: Table of Contents :depth: 2 :local: Overview -------- **TimeDaemon** is a non-AUTOSAR adaptive process designed to provide synchronized vehicle time to client applications. It supports multiple time bases including **in-vehicle synchronized time** (PTP - Precision Time Protocol) and **external synchronized time** (absolute time base). The daemon retrieves time information from the respective time sources, verifies and validates the timepoints, and distributes this time information across multiple clients through efficient IPC mechanisms. The main responsibilities of TimeDaemon include: - **Providing current Vehicle time** to different applications - **Setting synchronization qualifiers** (e.g., Synchronized, Timeout, etc.) - **Providing diagnostic information** for system monitoring - **Supporting additional verification mechanisms** such as QualifiedVehicleTime (QVT) for safety-critical applications For a detailed concept and architectural design, please refer to the :doc:`TimeDaemon Concept Documentation