[App_rpt-users] All Star Link GPIO Odroid U3

[Doug Crompton]

Luis,

  This is already done and in testing on the RPi2 and will be in the next update in about a month at hamvoip.org.
73 Doug
WA3DSP
http://www.crompton.com/hamradio


Date: Mon, 27 Apr 2015 14:21:41 -0700
From: lcejaqui at ucsc.edu
To: app_rpt-users at ohnosec.org
Subject: [App_rpt-users] All Star Link GPIO Odroid U3

I am trying to use All Star Link without modifying a cm 108 chip. I am trying to use the GPIO pins on the Odroid U3 expansion I/O board to control the repeater logic signals (COR/PTT) but all I could find was information on using either the GPIO pins on the cm108 fob (which must be modified to use) or using a parallel port. The Odroid U3 doesn't have a parallel port and I think the native GPIO pins should have the capacity to use the COR/PTT signals.
I can't find any information on how to go about using the native GPIO pins on an sbc for All Star Link. Is there a way to do this?
My thoughts on an approach to this:1. create a driver or port that uses the GPIO pins as a parallel port2. provide a memory address to the rpt.conf file that has a value corresponding to the GPIO status so that it may be read as a parallel port3. alter the software to use native GPIO as another option as opposed to parallel port
I am not sure how to approach any of these options. I think option 3 would be best but I don't know how this is possible. May i get some suggestions or help regarding this? Thanks!

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