op25-dev

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309 discussions

Audio Dies?????
by scancaster＠scancaster.net 08 Jan '19

08 Jan '19

I am noticing as I set this up and letting it run that after some point the audio dies on loop0, thus the feed is silence, nicht gut! Any one else seeing this???? This is both on a PI3B+....and an old dual core laptop..... The laptop has a -V10 and I tail the output log, and the decode traffic is still good for the CC, no errors in it... I can see TG's appear in the tags for the groups from both, just no audio.... :( :( Simply killing rx.py, restart, audio comes back,.... Doesn't seem to be much to tie it down... runs overnight, no issues, I even restarted OP25 on both setups to make some changes to use the TG priority option... and that was about 10 or so hours of run time.... as some point after the 5-6 hour time period it die{d|s} .. can't be exact as real work gets in the way... Dongle related?? But if it was that would expect to see CC decode errors etc... but I see CC decodes stream, and then decodes for data when voice is active..... ? ? ? Any one else seeing this ??? Any corrective action???? ? ? ? ? ? ?? ? ? ? ? ? ? THANKS!

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Audio to Darkce/IceCast Server - No audio???? No tags, Local audio good.
by op25＠zellners.com 05 Jan '19

05 Jan '19

OK... I've put my RPi3B+ to work... Raspbian Image, updated, fully loaded.. (NOT NOOBS, this is just Raspbian Full ) Run through the install setup for OP25 from: https://www.hagensieker.com/wordpress/2018/07/17/op25-for-dummies/ Did this for my reclaimed laptop and this Pi... OP25 working on both... Local audio good on both. Tracks the PII system I need to put under review... So that works good.. The problem is feeding audio to my IceCast server.. :( :( :( I installed a MP3 capable Darkice with its deps... its starts up fine.. The feed appears on my server I am using the info at https://www.hagensieker.com/wordpress/2018/07/20/op25-raspberry-pi-streamin… I created /etc/asound.conf and /etc/modprobe.d/bcm2835.conf I rebooted the Pi rather than any reloading of things, to ensure that loopback created and loaded etc... For the ALSA Loopback etc. info and setup..... so is the ALSA loopback setup???? /darkice $ cat /proc/modules | grep snd snd_aloop 24576 0 - Live 0x7f3a6000 snd_bcm2835 32768 1 - Live 0x7f399000 (C) Check! Pi audio and ALSA loopback... CHECK CHECK! snd_pcm 98304 2 snd_aloop,snd_bcm2835, Live 0x7f138000 snd_timer 32768 1 snd_pcm, Live 0x7f11d000 snd 69632 6 snd_aloop,snd_bcm2835,snd_pcm,snd_timer, Live 0x7f102000 ALSA seems to be a dark arts thing.. I use some plugins on another setup to create L/R into separate feeds into darkice and that works great.... so I took it this loopback thing would do the same... Seems the loopback exists....from: ~/darkice $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA] Subdevices: 7/7 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Loopbacks!!!! WOOT! With this I will take it that the loopback and needed config files are correct, and have not posted them... Darkice cfg IS SET to loop0 ~/darkice $ cat lakelandp25.cfg # sample DarkIce configuration file, edit for your needs before using # see the darkice.cfg man page for details # this section describes general aspects of the live streaming session [general] duration = 0 # duration of encoding, in seconds. 0 means forever bufferSecs = 1 # size of internal slip buffer, in seconds reconnect = yes # reconnect to the server(s) if disconnected # this section describes the audio input that will be streamed [input] device = loop0 # OSS DSP soundcard device for the audio input sampleRate = 22050 # sample rate in Hz. 22050 i bitsPerSample = 16 # bits per sample. 16 for mono feeds, 32 for stereo feeds channel = 1 # channels. 1 = mono, 2 = stereo # this section describes a streaming connection to an IceCast server # there may be up to 8 of these sections, named [icecast-0] ... [icecast-7] # these can be mixed with [icecast2-x] and [shoutcast-x] sections # If you want to send to your own icecast server, you basically copy # this whole section and put in the values to point the feed to your own # server i # Don't forget, the name [icecast2-0] needs to change to [icecast2-1] # and 2 and 3 as you add more feed destinations. [icecast2-0] # The audio format to encode to, we're using mp3 here format = mp3 # The bit rate mode to use, the commented out lines are for a fixed bit # rate "constant bit rate" at 16 bits. I prefer the variable bit rate # for the sound quality it has and the throughput is very similar on avg #bitrateMode = cbr #bitrate = 16 sampleRate = 22050 # sample rate in Hz. 22050 is the bitrateMode = cbr bitrate = 16 # Quality at .1, max is 1.0, but as you increase, so does the bandwidth # used. For mono scanner audio .1 is totally fine. quality = 0.1 # Takes the input and mixes it down to a mono output for the feed. channel = 1 # Cuts frequency response over 5kHz. For scanner feed this mostly # eliminates hiss and harshness on paging tones. Saves a bunch of # bandwidth as well. lowpass = 5000 # From Feed Technical Details, the "Server" server = audio.myserver.net # From Feed Technical Details, the "Port" port = 8000 # port of the IceCast server, usually 8000 # From Feed Technical Details, the Password exactly as shown password = hackmeNOT! # From Feed Technical Details, the mount...remove the leading "/", it's # not needed in this file. So if it is /999999 make it just 999999 mountPoint = Redacatedfeed # name of the stream # On My Live Audio Feeds, it's the first part ending in a colon ":" name = Redactedfeed # On My Live Audio Feeds, it's the part in parentheses in the Feed name description = redactedfeed start up OP25 ./rx.py --args 'rtl' -N 'LNA:19' -l http:192.168.0.28:8080 -S 2400000 -f 8xx.7xxxxe6 -o 25000 -q 26 -T trunk.tsv -V -2 -O loop0 2> stderrstream.2 OP25 starts up... SILENCE on the feed ./rx.py --args 'rtl' -N 'LNA:19' -l http:192.168.0.28:8080 -S 2400000 -f 8xx.7xxxe6 -o 25000 -q 26 -T trunk.tsv -V -2 -M myststem.json -O loop0 2> stderrstream.2 SILENCE BUT I GET TAGS! ! ! ! So the audio is not piped through some where????? I figured if it was a issue with audio, tags would come through with out the audio... ./rx.py --args 'rtl' -N 'LNA:19' -l http:192.168.0.28:8080 -S 2400000 -f 8xx.xxxxe6 -o 25000 -q 26 -T trunk.tsv -V -2 -U -W 127.0.0.1 2> stderrstream.2 Watching the http output I see data come in, TSBK count goes up, TG's appear etc... NO AUDIO :( on the feed, WITH tags.... :) Local audio comes out the speakers.... So audio is recovered and in good quality even for a Pi.. Any hints, clues? ?? ? I've tried a couple of different setups for the loopback with an .asound.rc in the /home/user, used loop1, hw:1,0, hw:1,1 etc. tried as 2 channel audio v. single channel audio in darkice... still silence is not golden.... :( Any hints on getting the loopback audio working?? ? ? ? ? I might try it on the laptop setup too to see if its a Pi thing... My hunch is the magic dark arts of the right ALSA name for where the audio is at is wrong in the darkice config....but I've tried everything I can think of Thanks.

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FINAL: Mailing List Closure and Relocation Notice
by ikj1234i＠yahoo.com [op25-dev] 03 Jan '19

03 Jan '19

Effective January 1, 2019, this op25-dev mailing list is closed; no further posts to the yahoo group will be accepted after that date. The list is being relocated; going forward it will be hosted by osmocom.org. For more information please refer to the list's new home page: https://lists.osmocom.org/mailman/listinfo/op25-dev https://lists.osmocom.org/mailman/listinfo/op25-dev At this time I should like to take the opportunity to thank our new hosts at osmocom.org for volunteering to host the mail list, and for going to the trouble of backfilling list content starting from 2012... Best Max p.s. if anyone has a copy of the old list archives covering the period from 2008 - 2012, please contact us

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Image darkice support??
by op25＠zellners.com 31 Dec '18

31 Dec '18

> Well, I'm faster than I thought. The new version with audio > streaming via darkice is at > http://febo.com/pages/os_images/2018-03-18_op25_rpi.zip > John Is this the standard NON MP3 darkice from the various Debian and Raspbian repos or the compiled version from https://stmllr.net/blog/live-mp3-streaming-from-audio-in-with-darkice-and-i… ??? I have the binary on my various PI's I use for streaming and can move it over to your image if its not MP3 compliant. My users and the software for most feed needs MP3, my ogg feeds are being discontinued 1/1/19 as no one uses them, and I can add more feeds with that bandwidth that might be us of use. Thanks for the image... it will be a great time saver! Just want to confirm what darkice supports or doesn't before I flash it...and determine my plan to just apt-get remove darkice and recompile from above or what not... THANKS!

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Allstar integration?
by kb9mwr＠yahoo.com [op25-dev] 28 Dec '18

28 Dec '18

I wish there was a way to feed op25 into a local Allstar (Asterisk app_rpt) node to drive an analog transmitter. That way I can keep tabs on a few digital systems when I am out and about or via the the IP phone on my desk. One way would be fine till such a time that transmitting with op25 via direct modulator input becomes more common. Has any thought been given to that sort of thing? Just curious All the existing digital to analog bridges pretty much rely one one being personally involved with the digital repeaters to configure things on both ends (IP network level etc).

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How To Hold On A Talk Group
by 'Trunk Tracker' trunktracker＠tampabay.rr.com [op25-dev] 18 Dec '18

18 Dec '18

If you know of 1 certain talk group ID number you want to listen to, is there an easier way than having to exit the program, edit the .tsv file, whitelist it, save the .tsv file and then re-start the program? Like say I wanna listen to TG ID 1000. Is there a way to just type 1000 while the program is running and make it hold on 1000? So If I'm at this screen, how do we do it: trunktracker(a)tampabay.rr.com

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op25-dev Mailing List Closure and Relocation Notice
by ikj1234i＠yahoo.com [op25-dev] 15 Dec '18

15 Dec '18

Effective January 1, 2019, this op25-dev mailing list will be closed; no further posts to the yahoo group will be accepted after that date. The list is being relocated; going forward it will be hosted by osmocom.org. For more information please refer to the list's new home page: https://lists.osmocom.org/mailman/listinfo/op25-dev https://lists.osmocom.org/mailman/listinfo/op25-dev At this time I should like to take the opportunity to thank our new hosts at osmocom.org for volunteering to host the mail list, and for going to the trouble of backfilling list content starting from 2012... Best Max p.s. if anyone has a copy of the old list archives covering the period from 2008 - 2012, please contact us

3 2

What Are All these Plot Graphs For?
by 'Trunk Tracker' trunktracker＠tampabay.rr.com [op25-dev] 10 Dec '18

10 Dec '18

I see there's 5 different graphs, but no idea what these are or how to read them. What does this mean? trunktracker(a)tampabay.rr.com

1 0

How to Listen to DMR
by 'Trunk Tracker' trunktracker＠tampabay.rr.com [op25-dev] 09 Dec '18

09 Dec '18

Am I seeing this right, online you can listen to DMR? How do we do it? Is there a certain command we type? trunktracker(a)tampabay.rr.com

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multiple trunk systems
by wllmbecks＠gmail.com [op25-dev] 06 Dec '18

06 Dec '18

Trunktracker, If your trunk.tsv has multiple system define as in the example trunk.tsv that get installed with op25 then the software will scan or sample all of the systems defined approximately every five seconds as long that the control channel that it is currently tuned to is idle. Voice traffic halts the scan or other systems and resets the timer. This feature is not real useful if your system are fairly busy as you'll end up missing a lot of traffic with the round robin taking place. Probably best to only have one system in your trunk.tsv file, but that is your choice to determine what works best for you. Bill

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