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Is Ubiquiti PING watchog compatible with ROBIN?

 
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mobilexpi
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PostPosted: Tue Mar 03, 2009 1:06 am    Post subject: Is Ubiquiti PING watchog compatible with ROBIN? Reply with quote

Hello,
I see in the AirOS demo that Ubiquiti have a ping watchdog, I've some questions...
-Will it work with Robin firmware?
-Is the ping watchog different to a physical watchdog??

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opampca
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PostPosted: Tue Mar 03, 2009 6:17 am    Post subject: Reply with quote

A ping relies on the kernel. If the kernel crash, it will never reboot.
A hardware watchdog keep a conversation with the kernel, and if it fails, it reboot the processor. The chip is outside the processor and is independant of it's functionnality.

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mobilexpi
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PostPosted: Tue Mar 03, 2009 6:54 am    Post subject: watchdog Reply with quote

Excellent, thank you for the explication. Finally, I understand the difference.
And can I install a hardware watchdog to the Ubiquiti PicoStation2HP or it's a very difficult mod?
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opampca
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PostPosted: Tue Mar 03, 2009 9:40 am    Post subject: Re: watchdog Reply with quote

mobilexpi wrote:
can I install a hardware watchdog to the Ubiquiti PicoStation2HP or it's a very difficult mod?

mmm...quite difficult...you have to make a physical link between the watchdog chip and the chipset, implement software on both to achieve the goal.
Some chips are simple timers waiting for a life sign (service) from the processor. If it times out, then it does trigger a reset.

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