Svc::PosixTime Component

1. Introduction

The Svc::PosixTime is a component that provides system time on Posix systems. It implements the Time interface.

2. Requirements

Requirement	Description	Verification
SVC-POSIX-TIME-001	Svc::PosixTime shall return current system time as an Fw::Time objects in response to the timeGetPort port call	Unit Test
SVC-POSIX-TIME-002	Svc::PosixTime shall set the time context of returned Fw::Time objects to the value supplied by setTimeContext	Unit Test

3. Design

Svc::PosixTime has a single port. It has no data types, commands, events, telemetry channels, nor substantial algorithms.

3.1 Ports

Port	Kind	Data Type	Description
timeGetPort	sync input	Fw.Time	Port returning current system design

3.2 Time Context

Returned Fw::Time objects carry a project-specific time context, which is 0 unless changed by a call to setTimeContext(). setTimeContext() is not synchronized and is intended to be called at startup, before the component is serving timeGetPort calls.

7. Change Log

Date	Description
4/20/2017	Initial Version
10/12/2023	Reworked into Svc::PosixTime
8/14/2026	Added settable time context