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 |