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User9635
Level 4
Level 4
50 replies posted 50 questions asked 25 replies posted
Hello Support,

Aurix 2G Watchdog Expiry event is connected to SMU Alarms which produces the required reset/NMI to CPU.
Can this connection from WDT to SMU Alarm be disabled using SMU Configuration, so that there will be no more Watchdog reset/NMI to CPU when WDT expires?
I am assuming it can be easily disabled by changing SMU AGC Registers so that CPU will continue running as normal even though WDT has expired without any service tick.
Please confirm.
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Best Regards
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NeMa_4793301
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
Yes, it is possible to maliciously reprogram the SMU registers to disable the alarm for the watchdog recovery timer, which normally causes a System Reset.

But you could only do that when the SMU configuration is not locked.

And the registers are Safety Endinit protected, so you couldn't do it by accident.
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