[arm-allstar] Time out timer and watchdog functions

Mon Feb 16 16:51:54 EST 2015

Tom,

 COS can be asserted with either an active high or low depending on the radio. If it is active high then you would set carrierfrom=usb  if low then you would set carrierfrom=usbinvert   in simpleusb.conf

All radios are different so you need to set it for your radio. It is best if it is active low -  stays at 5V without signal. There is a weak pullup on the cm1xx chip but even in this configuration noise can pull it down sometimes. 

There is no easy answer to this especially if it is active high. In that case disconnecting a radio will most certainly cause a keyup as the line will float up high.

This usually happens to first time users who aren't aware of the problem. Usually you put a node on and leave it 24/7 with the radio and node active. If you have a need to turn off or disconnect the radio and your are leaving the BBB on just make sure you are disconnected from any other nodes.
73 Doug
WA3DSP
http://www.crompton.com/hamradio

> Date: Mon, 16 Feb 2015 10:39:25 -0800
> From: ve7did at dccnet.com
> To: arm-allstar at hamvoip.org
> Subject: Re: [arm-allstar] Time out timer and watchdog functions
> 
> We tested this morning and found out indeed it was my radio which I turned off was
> the culprit.  I was turning OFF only the radio which was asserting COS (active low)
> which was causing Daveś radio to go into constant transmit.
> 
> Not a good situation... if a radio somehow gets turned off because of a power fail
> condition.  I think this could be fixed by having the COS be an active high.
> Hopefully the simpleusb can operate on an active high.
> 
> As we are new to this stuff, it looks like it is good to play with the radios on
> the bench for a while... 
> 
> 
> ...73 Tom ve7did 
> 
> 
> Dave:
> > Perhaps it is me who is causing the problem.  Did you leave us connected up
> >  together? If so like Doug said if the COS is asserted it could keep your tx on.
> > Hereś the key, I turned my radio OFF probably around 23:00 last night and just did
> > the same tonight.   When my radio is OFF, COS will be asserted as it goes to ground
> > when COS is asserted with no power on.
> 
> 
> 
> On Sun, 15 Feb 2015 16:22:40 -0800
> Dave Miller <ve7pke at gmail.com> wrote:
> 
> > Doug and Dave,
> > Thanks for the information.
> > If it ever happens again I shall do some more digging.
> > My first concern was that I was locking up a high profile local repeater so
> > I just cycled the power first. I will be more methodical next time.
> > 
> > I will try to answer what I can below.
> > 
> > 
> > 
> > On Sun, Feb 15, 2015 at 4:00 PM, Doug Crompton <doug at crompton.com> wrote:
> > 
> > > Dave,
> > >
> > >  I concur with Dave's response but it would be good to have more info.
> > > What happened to you is rare assuming it wasn't a locked up channel - you
> > > were connected to someone else that had there COS asserted indefinitely. I
> > > have not seen a 1.2.1 version BBB lockup like that.
> > >
> > > Ok that is good to know.
> > 
> > > Were you connected to anyone else at the time?
> > >
> > Not that I know of. I guess its possible someone was connected to me.
> > Since its a simplex node could a connection from a duplex node cause an
> > issue?
> > 
> > > If so the first thing to do is disconnect everyone else if it goes away
> > > you know it was not your system.
> > >
> > Good suggestion , Next time ;-)
> > 
> > >
> > > Is the green light on the USB FOB blinking? If you pull the USB out and
> > > reinserted does it clear?
> > >
> > Don't know
> > 
> > >
> > > Did you transmit on HF or any other band with high power in the vicinity?
> > >
> > > No that I recall. All I was doing yesterday was playing on RX with my
> > Hermes light. I have an Igate running 20 Watts in another building on
> > property but its on 2M this was on 220. I have had it running for  a few
> > days and had not noticed the issue.
> > 
> > > If this should happen again log into the system and  enter the client -
> > > asterisk -rvvv
> > >
> > OK Will do
> > 
> > >
> > > See if any errors are coming across the screen.  There are key and unkey
> > > command for simpleusb. At the clinet prompt type:
> > >
> > > susb key (or unkey)
> > >
> > > and see if you have control of the PTT. Of course leave it unkey.
> > >
> > > Remember if you are connected to a bunch of nodes and one of them hangs up
> > > you will also. The TX timeout is always a good idea. I set mine in the
> > > Alincos to 5 minutes but you could go shorter, just not so short you cut
> > > off normal transmissions.
> > >
> > > I have it set even shorter for now. I will lengthen once I get more
> > confidence in system
> > 
> > > Also unrelated but the best way to run the Alinco's is in medium power
> > > with a small muffin fan over the heatsink. They will run all day like that.
> > > I would never use high power especially on a busy channel. You will
> > > eventually lose the final.
> > >
> > OK I was running low power. A fan will be a good thing eventually.
> > 
> > Thanks
> > Dave
> > VE7PKE
> > 
> > >
> > >
> > >
> > > *73 DougWA3DSPhttp://www.crompton.com/hamradio
> > > <http://www.crompton.com/hamradio>*
> > >
> > >
> > > ------------------------------
> > > Date: Sun, 15 Feb 2015 10:57:53 -0800
> > > From: ve7pke at gmail.com
> > > To: arm-allstar at hamvoip.org
> > > Subject: [arm-allstar] Time out timer and watchdog functions
> > >
> > >
> > > The node I am testing out went rogue last night.
> > > When I went into the shack the radio was stuck in TX and warm ;-)
> > > I have since enable the built in time out time in the alinco ;-)
> > > lsnodes show the time out time is enabled.
> > > How to do troubleshoot this.
> > > Thanks
> > > Dave
> > > VE7PKE
> > >
> > >
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