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op25-dev

op25-dev@lists.osmocom.org

308 discussions

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p25_frame_assembler performance problems

by lukekb＠gmail.com [op25-dev]

I am trying to record a Phase 1 P25 Trunking systems. I have a bunch of OP25 records hooked up to the different channels that the system could use. I have a Valve in the flow graph that will allow samples to pass or dump them to a null_sink. This lets me turn P25 recorders on or off. The problem is that the recorders using OP25 seem to using a ton of CPU even if they are not getting samples. I tracked it down to the p25_frame_assembler block. Whenever it is connected to a flow graph, it seems to be using a lot of CPU, even if it is not getting any samples. Any ideas why the p25_frame_assembler block would be using CPU cycles even if it is not getting samples in? I am running it with the following params: bool do_imbe = 1; bool do_output = 1; bool do_msgq = 0; bool do_audio_output = 1; bool do_tdma = 0;

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Ok I know I asked this before but im still stuck, why when I launch op25_25.PY I just get the waterfall app, im using the black rtl sdr how do I tell it to tune o a frequency? Where could I find the op25.grc file and just run op25 in gnu radio companion? Yea I know, I suck, I ask alot of dumb questions , but im tryin! Cant wait for the live cd to come out!

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Corporal Sean Buckland Kealy III "The Whackmaster Sexy"

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Im sorry im not fluent or able with some of the commands, people are made and not born, I have an interest in the project thats why I joined and want to learn more about this stuff Could anybody walk me through how to use scope I sourced the envronment Ran scope with all the parameters for rtl sdr The program script s tarts but then nothing happens , what could I be doing wrong?

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Corporal Sean Buckland Kealy III "The Whackmaster Sexy"

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

When I run scope, the script executes but nothing happens Ive entered all the parmeters for rtl sdr and run the env setup Doi need gnu rafio running in the same shell?

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Corporal Sean Buckland Kealy III "The Whackmaster Sexy"

9 years, 6 months

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Re: [op25-dev] waterfall

by Sean Kealy superstardodge＠yahoo.com [op25-dev]

Sorry, entering the command lne arguments and parameters is where im struggling, what could I enter for a command if I wanted to listen to 139.5600? -------------------------------------------- On Sun, 2/7/16, Matt Ames matt.ames7bc(a)gmail.com [op25-dev] <op25-dev(a)yahoogroups.com> wrote: Subject: Re: [op25-dev] waterfall To: op25-dev(a)yahoogroups.com Received: Sunday, February 7, 2016, 2:50 PM Tell me this - what frequency did you tell it to tune to using the command line arguments? Does the line that says "[R820T] PLL not locked for 3570434 Hz!" give you any hints as to what may have gone wrong? As has been suggested, check out the command line arguments before running the program. On 8 February 2016 at 09:25, Sean Kealy superstardodge(a)yahoo.com [op25-dev] <op25-dev(a)yahoogroups.com> wrote: > > > When I open waterfall i get the following pasted below in terminal, and > the waterfall doesnt do anything, do I have to open grc in terminal first > somehow? > thanks > sean > > root@kali:~# ./op25_grc.py > Using Volk machine: sse3_64_orc > RTL2832 Source block configuration: > Read length (bytes): 262 > Buffer enabled: yes > Buffer multiplier: 8 > Buffer size (samples): 1048 > Samples per read: 131 > Buffer level: 50.0% > Successfully initialised demod: "ezcap EzTV" > Probing "e4k"...not found. > Probing "fc0013"...not found. > Probing "fc2580"...bad check value. > Probing "r820t"...found. > Found RTL2832 device: ezcap EzTV (tuner: Rafael Micro R820T) > Sample rate range: 900001 - 3200000 Hz > Crystal frequency: 28800000 Hz > [r820t] Initialised (default bandwidth: 0 Hz) > Wait delay: 0.196 ms > [R820T] PLL not locked for 3570434 Hz! > work wants more than the buffer size! > Capture threading starting: 7f904e7fc700 > rOShort bulk read: given 0 bytes (expecting 262) > rBlibusb error: the device has been disconnected [-4] > Capture threading aborting due to libusb error: 7f904e7fc700 > No longer running after packet notification - signalling EOF... > > > > >

9 years, 6 months

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by Sean Kealy superstardodge＠yahoo.com [op25-dev]

When I open waterfall i get the following pasted below in terminal, and the waterfall doesnt do anything, do I have to open grc in terminal first somehow?thankssean root@kali:~# ./op25_grc.py Using Volk machine: sse3_64_orc RTL2832 Source block configuration: Read length (bytes): 262 Buffer enabled: yes Buffer multiplier: 8 Buffer size (samples): 1048 Samples per read: 131 Buffer level: 50.0% Successfully initialised demod: "ezcap EzTV" Probing "e4k"...not found. Probing "fc0013"...not found. Probing "fc2580"...bad check value. Probing "r820t"...found. Found RTL2832 device: ezcap EzTV (tuner: Rafael Micro R820T) Sample rate range: 900001 - 3200000 Hz Crystal frequency: 28800000 Hz [r820t] Initialised (default bandwidth: 0 Hz) Wait delay: 0.196 ms [R820T] PLL not locked for 3570434 Hz! work wants more than the buffer size! Capture threading starting: 7f904e7fc700 rOShort bulk read: given 0 bytes (expecting 262) rBlibusb error: the device has been disconnected [-4] Capture threading aborting due to libusb error: 7f904e7fc700 No longer running after packet notification - signalling EOF...

9 years, 6 months

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Re: [op25-dev] Re: run scope

by Sean Kealy superstardodge＠yahoo.com [op25-dev]

I cheked I have the gnu radio folder, op25 blocks and op25, i instlled it all fom pybombs,do I have to do anything else to install them -------------------------------------------- On Sat, 2/6/16, verymetl(a)hotmail.com [op25-dev] <op25-dev(a)yahoogroups.com> wrote: Subject: [op25-dev] Re: run scope To: op25-dev(a)yahoogroups.com Received: Saturday, February 6, 2016, 1:57 PM You can not run the scope app without passing parameters. Please see this wiki article: SignalScopePage – OP25 http://op25.osmocom.org/trac/wiki.png/wiki/SignalScopePage http://op25.osmocom.org/trac/wiki.png/wiki/SignalScopePage SignalScopePage – OP25 http://op25.osmocom.org/trac/wiki.png/wiki/SignalScopePage Signal Scope Installation Before running the scope app, check that the following standard pre-requisite packages are also installed: GNU Radio The op25 blocks... View on op25.osmocom.org http://op25.osmocom.org/trac/wiki.png/wiki/SignalScopePage Preview by Yahoo

9 years, 6 months

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