I'm a rookie in Adaptive AUTOSAR.
I can't imagine why Time Synchronization(Tysnc) is needed. System time of ECUs can be synchronized by PTP.
Could you explain why Tsync is needed even though PTP synchronize time across a distributed system? Or I welcome any documents or materials for me to understand Tsync's usages or use-cases.
There need to be different time bases in vehicle. Examples of Time Bases in vehicles are: • Absolute, which is based on a GPS based time. • Relative, which represents the accumulated overall operating time of a vehicle, i.e. this Time Base does not start with a value of zero whenever the vehicle starts operating. • Relative, starting at zero when the ECU begins its operation.