[arm-allstar] Power fail script

Luc Drolet VE2LUQ ldrolet at cgocable.ca
Sun Oct 21 17:30:03 EDT 2018


Good evening Doug,

To put the script in our raspberry PI, can you tell us what is the best place on the PI rasberry
in /etc/asterisk/local or somewhere else?

I read your text and if I understand correctly we can change the give as 5 minutes to 10 minutes for the transmission delay if there is a power failure
so if it works well in my opinion the best place will be in /etc/asterisk/local?

Thank you for your execllent work

73’s
Luc
VE2LUQ



> Le 20 oct. 2018 à 22:55, Doug Crompton via ARM-allstar <arm-allstar at hamvoip.org> a écrit :
> 
> Attached is a power fail check script using the Pi GPIO. By default it assumes bit 24, pin 35 of the Pi. This bit is pulled low to indicate a power failure. This could be achieved by a SPDT relay or a clean 3V (no more!) source powered from the mains. Of course to use this the Pi must be powered from a source independent of the mains.
> 
> The script has a timer set to 30 seconds before it assumes a power fail. It sends a "power fail set" message at start and after a power failure is over.  When a power failure is happening it says "power failure" on the air locally every 5 minutes.
> 
> Times and GPIO bits are changeable in the script.
> 
> The script, after checking, is run in the background and uses an interrupt requiring scant resources.
> 
> Copy this script to your server and make it executable -  chmod 750 power_fail_check.sh
> 
> 73 Doug
> WA3DSP
> http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>
> 
> 
> <power_fail_check.sh>_______________________________________________
> 
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