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Update avl_time_state authored by Guido Voigt's avatar Guido Voigt
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avl_time_state.md
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# AVL Time State
```mermaid
sequenceDiagram
participant SystemTime
participant LastValidPosition
participant RTC
participant GNSS
participant UserTime
SystemTime <- LastValidPosition: load last valid time and timestamp not older then build date
SystemTime <- RTC: load RTC time if time valid flag and timestamp not older then build date
SystemTime <- GNSS: load GNSS time if time and date valid and timestamp not older then build date
RTC <- GNSS: set RTC time if time and date valid and timestamp not older then build date
SystemTime <- UserTime: set Time via $PFAL,Sys.SetTime,dd.mm.yy,hh:mm:ss
RTC <- UserTime: set Time via $PFAL,Sys.SetTime,dd.mm.yy,hh:mm:ss
LastValidPosition -> SystemTime: load last valid time and timestamp not older then build date
RTC -> SystemTime: load RTC time if time valid flag and timestamp not older then build date
GNSS -> SystemTime: load GNSS time if time and date valid and timestamp not older then build date
GNSS -> RTC: set RTC time if time and date valid and timestamp not older then build date
UserTime -> SystemTime: set Time via $PFAL,Sys.SetTime,dd.mm.yy,hh:mm:ss
UserTime -> RTC: set Time via $PFAL,Sys.SetTime,dd.mm.yy,hh:mm:ss
SystemTime -> LastValidPosition: save last Valid pos and time $PFAL,GPS.Nav.SaveLastValid
```
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