[arm-allstar] Pi gpio

[Steve Smith]

We are using many of the GPIO pins in our HamVOIP Allstar based DR-1X 
repeater controller we call MABEL.  You can look and see what we did at 
www.customcomms.net.

While no Raspberry Pi GPIO pins are normally used for digital I/O in the 
HamVoip release, there are two scripts that I can think of that do use 
them.

1) The /usr/local/sbin/shutdown_monitor.sh script uses the RPI GPIO 
connectors pin 11 and pin 13.  This only occurs if SHUTDOWN_MONITOR is 
enabled in /usr/local/etc/allstar.env.

2) The /usr/local/sbin/SA818-prog script uses the RPI GPIO connectors 
pin 8 and pin 10 to program the SA818 RF module on a SHARI PiHat.  This 
only occurs if you modify the /boot/cmdline.txt and /boot/config.txt 
files per the SHARI PiHat setup instructions.

Steve - N8AR

------ Original Message ------
From: "Don Sayler via ARM-allstar" <arm-allstar at hamvoip.org>
To: "David McGough" <kb4fxc at inttek.net>
Cc: "Don Sayler" <don.sayler at gmail.com>; "Don Sayler via ARM-allstar" 
<arm-allstar at hamvoip.org>
Sent: 3/6/2022 1:52:57 AM
Subject: Re: [arm-allstar] Pi gpio

>Thanks David. I'm going to use the onboard 3.3v as the source, switched
>on/off by an external device into several of the inputs.
>
>On Sat, Mar 5, 2022, 7:41 PM David McGough <kb4fxc at inttek.net> wrote:
>
>>
>>  Hi Don,
>>
>>  Currently all GPIO pins on the RPi are available for use....Just be
>>  careful, since none of the RPi pins are buffered in any way---they connect
>>  directly to the SoC.
>>
>>  73, David KB4FXC
>>
>>
>>  On Sat, 5 Mar 2022, "Don Sayler via ARM-allstar" wrote:
>>
>>  > I'd like to use some of the Pi's gpio pins for another application. Am I
>>  > free to use any of those?
>>  >
>>  > We are using the USB RIM module to connect to our repeater controller,
>>  but
>>  > I'm wondering if Asterisk or any other part of the HamVoip system uses
>>  any
>>  > of the gpio.
>>  >
>>  > Thanks.
>>  > Don
>>  > _______________________________________________
>>  >
>>  > ARM-allstar mailing list
>>  > ARM-allstar at hamvoip.org
>>  > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>  >
>>  > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>>  >
>>
>>
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