Detecting presence of watchdog jumper

Topics about the Hardware of Revolution Pi
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aharrah
Posts: 11
Joined: 23 Aug 2019, 18:40

Detecting presence of watchdog jumper

Post by aharrah »

Is there a programmatic way to query the RevPi to determine if the watchdog jumper is present?
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dirk
KUNBUS
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Joined: 15 Dec 2016, 13:19

Re: Detecting presence of watchdog jumper

Post by dirk »

Hi aharrah, just have a look at the schematics. I see a WD_IN signal that connects to GPIO42.
aharrah
Posts: 11
Joined: 23 Aug 2019, 18:40

Re: Detecting presence of watchdog jumper

Post by aharrah »

GPIO42/WD_IN is the watchdog chip's input, which I'm toggling periodically.

I am looking for a way to determine if the watchdog jumper is present on the X4 connector. From the schematic I believe this line, after conditioning, is labeled "WD_EN (from Pin3 X4 connector)."

Thanks,
Andy
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dirk
KUNBUS
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Joined: 15 Dec 2016, 13:19

Re: Detecting presence of watchdog jumper

Post by dirk »

Hi Andy, it is not possible to read out if the watchdog is enabled or bridged.
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