Re: [App_rpt-users] App_rpt-users Digest, Vol 90, Issue 4
Remember to check for active-ground using "Diode Check" mode on your meter, with meter+ to the device and meter- to ground. Internal switching is transistor/FET based and will show always open in regular DVM "resistance" mode. Duane KA1LM On Thu, Aug 4, 2016 at 9:22 AM, <app_rpt-users-request@ohnosec.org> wrote:
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Today's Topics:
1. Re: SimpleUSB gpio? (mike@midnighteng.com) 2. Re: SimpleUSB gpio? (Stephen - K1LNX) 3. Re: SimpleUSB gpio? (David McGough) 4. Re: SimpleUSB gpio? (Stephen - K1LNX)
---------- Forwarded message ---------- From: mike@midnighteng.com To: app_rpt-users@ohnosec.org Cc: Date: Thu, 4 Aug 2016 09:05:34 -0400 Subject: Re: [App_rpt-users] SimpleUSB gpio?
Sorry, I do have to ask the obvious, Are you sure you are testing the output correctly ? I believe these FLOAT and switch to ground when active. Just like a parallel port.Don't use them so I don't know for sure. So you need to check continuity between ground and the pin in question for activity.
...mike/kb8jnm
I'm trying to manipulate a GPIO pin off of a URIx and I am not able to get it to work for whatever reason. If I send a cop,62 command to toggle it, it does not change the state.
I found this message from Jim that was posted in June 2011:
http://ohnosec.org/pipermail/app_rpt-users/2011-June/002725.html
Does anyone know if this was ever implemented? This was quite some time ago.
I might be able to use usbradio instead for my application, but prefer SimpleUSB as it's easier to implement.
73 Stephen K1LNX _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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---------- Forwarded message ---------- From: Stephen - K1LNX <k1lnx@k1lnx.net> To: mike@midnighteng.com Cc: app_rpt mailing list <app_rpt-users@ohnosec.org> Date: Thu, 4 Aug 2016 09:08:53 -0400 Subject: Re: [App_rpt-users] SimpleUSB gpio? Hi Mike... yes, I was testing between ground and the GPIO pin question (GPIO1 in my case) for voltage.
See my later message I posted for details on what I found.
73 Stephen K1LNX
On Thu, Aug 4, 2016 at 9:05 AM, <mike@midnighteng.com> wrote:
Sorry, I do have to ask the obvious, Are you sure you are testing the output correctly ? I believe these FLOAT and switch to ground when active. Just like a parallel port.Don't use them so I don't know for sure. So you need to check continuity between ground and the pin in question for activity.
...mike/kb8jnm
I'm trying to manipulate a GPIO pin off of a URIx and I am not able to get it to work for whatever reason. If I send a cop,62 command to toggle it, it does not change the state.
I found this message from Jim that was posted in June 2011:
http://ohnosec.org/pipermail/app_rpt-users/2011-June/002725.html
Does anyone know if this was ever implemented? This was quite some time ago.
I might be able to use usbradio instead for my application, but prefer SimpleUSB as it's easier to implement.
73 Stephen K1LNX _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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---------- Forwarded message ---------- From: David McGough <kb4fxc@inttek.net> To: app_rpt mailing list <app_rpt-users@ohnosec.org> Cc: Date: Thu, 4 Aug 2016 09:19:09 -0400 (EDT) Subject: Re: [App_rpt-users] SimpleUSB gpio?
Hi Stephen,
While the CM108/CM119 audio chips found in URI's are powered from the +5V USB source, they contain an internal +3.3V regulator and are internally completely 3.3V logic....So, you'll never see more than +3.3V as a logic "high" level coming from the GPIO pins.
73, David KB4FXC
On Thu, 4 Aug 2016, Stephen - K1LNX wrote:
An update on this, and I've learned something that was not so obvious to me, so I'll put this out there in case someone runs into this in the future.
Consider my dilemma.. I am using an RTCM to drive a pair of radios in full duplex mode. I needed to drive a relay (or MOSFET board in my case, more on that in a bit) to turn a fan on the transmit radio on and off as needed. Considering there are no GPIO's on the RTCM, I had a URIx also connected that I planned on using for another application that I thought I could tap the GPIO off of. I found Kyle, K0KN's excellent fan script, as well as this resource:
http://latinovoip.net/allstar-and-the-gpio-fan-script-for- dmk-engineering-uri/
I elected to use the version linked above, and got everything configured, but discovered my cop,62 commands were not working to toggle the GPIO line on the URI. I tried a variety of differing configs and troubleshooting methods, none of which worked, when I finally tried to issue the cop command from the node that is on the URI instead as a test, and what do you know, it worked.
It also appears that GPIO support was added into chan_simpleusb as of revision 1060: http://svn.ohnosec.org/viewvc/projects/allstar/astsrc-1.4. 23-pre/trunk/asterisk/channels/chan_simpleusb.c? revision=1060&root=svn&view=markup
On the hardware side, I had issues with the relay board I was using. I was seeing approximately 3.25 v when the GPIO was toggled to an on state on the URI. That was not enough to "trigger" the relay board to fire the relay, it needs right at a solid 5 volts. Rather than add another piece of hardware to ramp the voltage up, I ran across this on Ebay:
http://www.ebay.com/itm/301357646243?_trksid=p2057872. m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
This is a 3 channel MOSFET board that will switch the output on above 2.5v, off at ground. Perfect for my application. I have yet to test it, but have high confidence it will work just fine for my intended purpose.
On the software side, I had to make a few small changes in the scripts that I got from the link above, most notably:
run_app_rpt_fan.sh /etc/asterisk/local/app_rpt_fan.sh 1999 > /dev/null & ; change 1999 to the node number that is attached to the URI, a private node in my case
app_rpt_fan.sh PTTSTATE="/tmp/RPT_TXKEYED1999" ; change from the $1 variable to the node number that is attached to the RTCM instead
There are more likely easier solutions than what I've provided above, but this does work as intended now. After 10 seconds, GPIO1 goes high, goes back to ground after 10 minutes. An even easier solution would be to probably just use a snapdisc and have it fire on a certain temperature, but I wanted more granular control so that wasn't really an option. I could have also elected to use a Raspberry Pi and tap one of the GPIO's there instead, but my AllStar server is built on an x86 box running other applications so that wasn't really an option either.
I'd like to explore the possibility of maybe having chan_voter talk to the GPIO's in chan_usb or simpleusb. We could say add a config to the voter.conf file for the particulars for example. Not sure what this would take, but curious if it could be done?
Hope this helps someone in the future...
73 Stephen K1LNX
On Thu, Aug 4, 2016 at 3:32 AM, Stephen - K1LNX <k1lnx@k1lnx.net> wrote:
I'm trying to manipulate a GPIO pin off of a URIx and I am not able to get it to work for whatever reason. If I send a cop,62 command to toggle it, it does not change the state.
I found this message from Jim that was posted in June 2011:
http://ohnosec.org/pipermail/app_rpt-users/2011-June/002725.html
Does anyone know if this was ever implemented? This was quite some time ago.
I might be able to use usbradio instead for my application, but prefer SimpleUSB as it's easier to implement.
73 Stephen K1LNX
---------- Forwarded message ---------- From: Stephen - K1LNX <k1lnx@k1lnx.net> To: David McGough <kb4fxc@inttek.net> Cc: app_rpt mailing list <app_rpt-users@ohnosec.org> Date: Thu, 4 Aug 2016 09:22:09 -0400 Subject: Re: [App_rpt-users] SimpleUSB gpio? Ahh ok... thanks David, and that makes sense so I appreciate the clarification :)
On Thu, Aug 4, 2016 at 9:19 AM, David McGough <kb4fxc@inttek.net> wrote:
Hi Stephen,
While the CM108/CM119 audio chips found in URI's are powered from the +5V USB source, they contain an internal +3.3V regulator and are internally completely 3.3V logic....So, you'll never see more than +3.3V as a logic "high" level coming from the GPIO pins.
73, David KB4FXC
On Thu, 4 Aug 2016, Stephen - K1LNX wrote:
An update on this, and I've learned something that was not so obvious to me, so I'll put this out there in case someone runs into this in the future.
Consider my dilemma.. I am using an RTCM to drive a pair of radios in full duplex mode. I needed to drive a relay (or MOSFET board in my case, more on that in a bit) to turn a fan on the transmit radio on and off as needed. Considering there are no GPIO's on the RTCM, I had a URIx also connected that I planned on using for another application that I thought I could tap the GPIO off of. I found Kyle, K0KN's excellent fan script, as well as this resource:
http://latinovoip.net/allstar-and-the-gpio-fan-script-for-dm k-engineering-uri/
I elected to use the version linked above, and got everything configured, but discovered my cop,62 commands were not working to toggle the GPIO line on the URI. I tried a variety of differing configs and troubleshooting methods, none of which worked, when I finally tried to issue the cop command from the node that is on the URI instead as a test, and what do you know, it worked.
It also appears that GPIO support was added into chan_simpleusb as of revision 1060: http://svn.ohnosec.org/viewvc/projects/allstar/astsrc-1.4.23 -pre/trunk/asterisk/channels/chan_simpleusb.c?revision= 1060&root=svn&view=markup
On the hardware side, I had issues with the relay board I was using. I was seeing approximately 3.25 v when the GPIO was toggled to an on state on the URI. That was not enough to "trigger" the relay board to fire the relay, it needs right at a solid 5 volts. Rather than add another piece of hardware to ramp the voltage up, I ran across this on Ebay:
http://www.ebay.com/itm/301357646243?_trksid=p2057872.m2749. l2649&ssPageName=STRK%3AMEBIDX%3AIT
This is a 3 channel MOSFET board that will switch the output on above 2.5v, off at ground. Perfect for my application. I have yet to test it, but have high confidence it will work just fine for my intended purpose.
On the software side, I had to make a few small changes in the scripts that I got from the link above, most notably:
run_app_rpt_fan.sh /etc/asterisk/local/app_rpt_fan.sh 1999 > /dev/null & ; change 1999 to the node number that is attached to the URI, a private node in my case
app_rpt_fan.sh PTTSTATE="/tmp/RPT_TXKEYED1999" ; change from the $1 variable to the node number that is attached to the RTCM instead
There are more likely easier solutions than what I've provided above, but this does work as intended now. After 10 seconds, GPIO1 goes high, goes back to ground after 10 minutes. An even easier solution would be to probably just use a snapdisc and have it fire on a certain temperature, but I wanted more granular control so that wasn't really an option. I could have also elected to use a Raspberry Pi and tap one of the GPIO's there instead, but my AllStar server is built on an x86 box running other applications so that wasn't really an option either.
I'd like to explore the possibility of maybe having chan_voter talk to the GPIO's in chan_usb or simpleusb. We could say add a config to the voter.conf file for the particulars for example. Not sure what this would take, but curious if it could be done?
Hope this helps someone in the future...
73 Stephen K1LNX
On Thu, Aug 4, 2016 at 3:32 AM, Stephen - K1LNX <k1lnx@k1lnx.net> wrote:
I'm trying to manipulate a GPIO pin off of a URIx and I am not able to get it to work for whatever reason. If I send a cop,62 command to toggle it, it does not change the state.
I found this message from Jim that was posted in June 2011:
http://ohnosec.org/pipermail/app_rpt-users/2011-June/002725.html
Does anyone know if this was ever implemented? This was quite some time ago.
I might be able to use usbradio instead for my application, but prefer SimpleUSB as it's easier to implement.
73 Stephen K1LNX
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