[arm-allstar] Remote Base BCD Channel Steering
Ed Wilhelm
vacuumtubesforever at gmail.com
Wed Jan 20 22:31:35 EST 2016
Just saw the Repeater Builder link. None of that stuff exists. Will be
going from the rpi gpio to probably a ULN2803 and then to the 4 pins on
the accessory connector.
If nothing is pulled low the radio will operate normally.
Ed
On 01/20/2016 10:09 PM, Doug Crompton wrote:
> OK, So am I to assume the external diode BCD steering does not exist
> and the RPi2 just controls the 4 bits (or 5) bits straight into the
> radio? If all are high the front panel works?
>
> *73 Doug
> WA3DSP
> http://www.crompton.com/hamradio*
>
>
> ------------------------------------------------------------------------
> Date: Wed, 20 Jan 2016 17:33:27 -0800
> From: kg6uyz at gmail.com
> To: arm-allstar at hamvoip.org
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> For a GM300 you supply a GND trigger to one or more of the 4 channel
> steering pins. The pins have to stay grounded to stay on the channel
> you selected, if you release the triggers the radio reverts back to
> whatever channel you last manually selected with the channel up/down
> button.
>
> Example in this link:
> http://www.repeater-builder.com/motorola/maxtrac/remote-channel-select.html
>
>
> On Wed, Jan 20, 2016 at 2:04 PM, Doug Crompton <doug at crompton.com
> <mailto:doug at crompton.com>> wrote:
>
> Ed,
>
> OK fine. I can supply an example if you want but I was wondering
> what they wanted to see. Do you set the four lines BCD and then
> strobe another pin to load it? That is often the way it is done or
> maybe it just monitors the lines for them being stable and switches?
>
> *73 Doug
> WA3DSP
> http://www.crompton.com/hamradio*
>
>
> ------------------------------------------------------------------------
> To: arm-allstar at hamvoip.org <mailto:arm-allstar at hamvoip.org>
> From: vacuumtubesforever at gmail.com
> <mailto:vacuumtubesforever at gmail.com>
> Date: Wed, 20 Jan 2016 16:44:27 -0500
>
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> Doug,
>
> Nothing fancy, just 16 channel stuff. GM300, Maxtracs, Kenwood 90
> series stuff. Just got to yank the lines low.
>
> Ed
>
> On 1/20/2016 11:14 AM, Doug Crompton wrote:
>
> Ed,
>
> What is the format of the BCD control you are wanting? 16
> channels - 0001 - 1111 ?? Does the radio take TTL levels? Is
> there a strobe bit once the other bits are setup?
>
> *73 Doug
> WA3DSP
> http://www.crompton.com/hamradio*
>
>
> ------------------------------------------------------------------------
> To: arm-allstar at hamvoip.org <mailto:arm-allstar at hamvoip.org>
> From: vacuumtubesforever at gmail.com
> <mailto:vacuumtubesforever at gmail.com>
> Date: Wed, 20 Jan 2016 06:31:55 -0500
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> Hi Doug,
>
> Never did get a response. Was trying to avoid reinventing the
> wheel.
>
> Never thought of using the patch command to do DTMF stuff.
> Will do some investigating.
> That's the cool thing about Allstar/Asterisk, if you can think
> of something, there's usually a way to do it.
>
> All your efforts are really appreciated.
>
> Ed W8VT
>
> On 1/19/2016 9:21 PM, Doug Crompton wrote:
>
> Ed,
>
> In researching I saw you asked the same question years ago
> and I did not see an answer then. Did you ever get one?
>
> http://lists.allstarlink.org/pipermail/app_rpt-users/2013-February/005962.html
>
> Using the GPIO on the Pi to BCD control a radio would not
> be hard. In fact a user has already done that using
> function codes and an external script I wrote to control
> the bits. It is in use commercially.
>
> The idea for the future code we are writing is to get
> specific stuff out of the base code and put it where users
> can create their own interfaces to whatever hardware they
> want.
>
> Here are the basics of how I would do it....
>
> Use the patch command (with a different code) to pass DTMF
> to a Linux script via an extensions.conf dial plan.
> Then the script would take the number sent, convert it to
> BCD or any other format the radio requires
> and send it to the GPIO bits. Of course you would have to
> interface those bits to the actual hardware.
>
> If you needed to pass a code to a remote node you would
> use the standard codes to pass the command to the remote
> nodes dial plan.
>
> *73 Doug
> WA3DSP
> http://www.crompton.com/hamradio*
>
>
> > To: arm-allstar at hamvoip.org <mailto:arm-allstar at hamvoip.org>
> > From: vacuumtubesforever at gmail.com
> <mailto:vacuumtubesforever at gmail.com>
> > Date: Tue, 19 Jan 2016 20:04:16 -0500
> > Subject: [arm-allstar] Remote Base BCD Channel Steering
> >
> > Is this supported with the current image? If so, anyone
> know the
> > details, what gpio pins, etc?
> >
> > Tnx
> >
> > Ed W8VT
> > Beckley WV
> > Nodes 27849, 29496, 29982
> > _______________________________________________
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>
>
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> --
> Jeff Ackerman
> kg6uyz at gmail.com <mailto:kg6uyz at gmail.com>
>
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