Req. 5.3.2: "Watchdog"
Once booting of a unit is complete, the FSW shall provide a heartbeat to a hardware watchdog that reboots the unit if the heartbeat is not received within 10 seconds.
Basis (help)
[Derived]
Context (help)
Function(s)
Test(s)
009b: FSW and LAT re-initialization and recovery
This test shall verify the mechanisms for recovery should the LAT or one of its processors become non-operational or lose communications, either internally or with the SC. This test shall include a number of scenarios: orderly shut-down and re-initialization of LAT when communications with SC are lost, reboot of the SIU on receipt of the SIU_RESET discrete signal from the SC, re-initialization of the SIU by the watchdog function, re-initialization of one or more EPUs by the SIU or when the EPU watchdog function is triggered.