[App_rpt-users] All Star Link GPIO Odroid U3

[mike at midnighteng.com]

Luis,

First I will say I don't know first hand any of the product you are using
and someone who does may have a better answer for you.

Once you can construct a command line to turn the gpio pin on and off, or
read the pin,

you can use "on event" command in rpt.conf in conjunction with that gpio
command string to equate it to cor and ptt activation.

Sorry I can't be more specific, but it is a direction to look at and I
think it would work. There are probably other methods to do the same.

...mike/kb8jnm


> 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 port
> 2. 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 port
> 3. 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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