Re: [Discuss-gnuradio] Getting Time Stamps From an x310 in C++

As of v3.7.10 there is a command port handler for forcing a new time tag. https://github.com/gnuradio/gnuradio/blob/master/gr-uhd/lib/usrp_source_impl.cc#L465 It's not strictly necessary since you can always count time yourself, but it can be useful for some things. On Wed, Jul 6, 2016 at 8:58

Re: [Discuss-gnuradio] random phase offset constantly changing with octoclock setup

Hi Marcus, Trying the attached code with two of the USRPs transmitting, and with the B210_Phase_Viewer for the other 2 USRPs receiving, still gives me different offsets for every different run call. And by different run call, I'm simply running the flowgraph once, seeing the offset, stopping the

Re: [Discuss-gnuradio] random phase offset constantly changing with octoclock setup

On 07/06/2016 09:04 PM, Pavan Yedavalli wrote: Hi Marcus, Trying the attached code with two of the USRPs transmitting, and with the B210_Phase_Viewer for the other 2 USRPs receiving, still gives me different offsets for every different run call. And by different run call, I'm simply running

Re: [Discuss-gnuradio] Getting Time Stamps From an x310 in C++

USRPs will only output timestamps at the beginning of streaming, or when time skips (e.g. after an overrun). You can keep track of time by counting samples in between timestamp tags. See the header_payload_demux block for an example of how to keep track of time. Also, check out the gr-uhd manual

Re: [Discuss-gnuradio] random phase offset constantly changing with octoclock setup

On 07/06/2016 02:48 PM, Pavan Yedavalli wrote: I disconnected the MIMO cable and now have all 4 directly connected to the Octoclock, but I get the same results in which the offset changes at every run (using the above code). What about the attached code? Keep in mind that you'll have to

Re: [Discuss-gnuradio] Issues with Pybombs and Package Manager Install on Ubuntu 16.04

On 07/06/2016 05:20 PM, Dave wrote: > I’m not sure how to respond to the list when I receive the daily archive > of the email traffic. As such I just copied your response text and am > responding to that. If you want to post and have discussions, you should consider changing your subscription to

Re: [Discuss-gnuradio] How to use stream_mux in C++

That's not what lengths is meant for, it's meant for describing vector lengths on the inputs, and they don't change in GNU Radio. For dynamic selection, see the multiply_matrix block (it comes with examples in gr-blocks). Cheers, M On 07/06/2016 04:35 PM, Robert Kraml wrote: > I'm trying to use

Re: [Discuss-gnuradio] Issues with Pybombs and Package Manager Install on Ubuntu 16.04

I'm not sure how to respond to the list when I receive the daily archive of the email traffic. As such I just copied your response text and am responding to that. Thank you Martin for your help. I used apt-get remove uhd and apt-get remove gnuradio. I also looked for anything with

[Discuss-gnuradio] How to use stream_mux in C++

I'm trying to use the stream_mux block in C++ to switch between a number of streams. I can instantiate it with an "lengths" vector of say { 1 , 0 } to select the first and not the second channel but I don't see how this is changed (say to { 0,1}) on the fly. It is a const reference and I don't

[Discuss-gnuradio] Getting Time Stamps From an x310 in C++

I have a C++ implemented flow-graph that acquires 3 channels at a sample rate of 5 MHz. There are a couple of decimation stages with the resultant n a number of 250 Hz output channels. How is the best way to access the associated time stamps. I wouldn't need every time stamp, just perhaps one

Re: [Discuss-gnuradio] Issues with Pybombs and Package Manager Install on Ubuntu 16.04

Dave, let's stick to one issue at a time. Your compile is probably failing because you have the package manager version still installed. Make sure you've removed everything you installed via apt-get (or whatever you used), that includes all UHD and GNU Radio packages, and retry PyBOMBS. Once we

[Discuss-gnuradio] Issues with Pybombs and Package Manager Install on Ubuntu 16.04

I am attempting to install gnuradio on a Ubuntu 16.04 machine. Using pybombs I get about 85% of the way along and then I get the errors show at the end of this post. After this attempt I used the package manager to load gnuradio with limited success. I'm new to gnuradio and I'm using an ETTUS

Re: [Discuss-gnuradio] The AttributeError problem now that I have modified a working OOT

Sylvain and Marcus, Thanks. Good to know. I guess it might be wise for me to do all but the simplest grc developments in a statically linked environment as much as possible, and then port to my OOT. I got my decoder working now. On 07/06/2016 05:23 AM, Marcus Müller wrote: Yeah, I didn't

Re: [Discuss-gnuradio] random phase offset constantly changing with octoclock setup

I disconnected the MIMO cable and now have all 4 directly connected to the Octoclock, but I get the same results in which the offset changes at every run (using the above code). On Tue, Jul 5, 2016 at 9:11 PM, Marcus D. Leech wrote: > On 07/05/2016 11:45 PM, Pavan Yedavalli

Re: [Discuss-gnuradio] installing gnuradio on Windows

Mostafa, Those scripts are torturous. You can now download pre-built gnuradio for windows here: http://www.gcndevelopment.com/gnuradio/downloads.htm i am using those binaries on Windows 10 (64bit) and I can run GnuRadio Companion and GQRX. So far I have not been able to create a new OOT module.

Re: [Discuss-gnuradio] Using gr-perf-monitorx Ubuntu 16.04

Hey guys, I managed to solve my problems with finding TFrozenDict and everything seems to work now (grc, the ctrlpot monitor, perf monitor, etc). I was going to clone the apache-thrift library directly into my gnuradio installation and build (manually replace thrift), but before I messed any

Re: [Discuss-gnuradio] Fwd: Broken Pybombs install, stuck again

Mark, did you use PyBOMBS to install it in the first place? If so, $ pybombs rebuild gnuradio will do the trick. Cheers, M On 07/06/2016 07:32 AM, Mark Napier wrote: > > -- Forwarded message -- > From: *Mark Napier* > >

Re: [Discuss-gnuradio] UHD FW Issue for NI USRP 2943R

X3xx images include both firmware and FPGA cod.e On 2016-07-06 12:10, Sanat Kumar Mishra wrote: > We have unistalled the UHD 3.9.4 and flashed the image of UHD available with > the GNUradio which is: > > C:\Program Files\GNURadio-3.7\share\uhd\images\usrp_x310_fpga_HGS.lvbitx > > my

[Discuss-gnuradio] Error in gr-digital/examples/ofdm/benchmark_tx.py ?

Hi, I am new to using GNU Radio and was going through some examples provided with the source code I checked out from the master branch. However, I find that one of the variables named "source_file" is not defined in the benchmark_tx.py example found in gnuradio/gr-digital/examples/ofdm directory.

[Discuss-gnuradio] Creating message block

Hi all ! I have a working Rx/Tx link and I want to be able to send what I receive as messages. At the input, I have 34 bytes of data that I need to decode. For example, the 1st 9 bits represent let's say velocity. So, what I would like to do with this block is to decode the information and then

Re: [Discuss-gnuradio] Macports Patch File

I'm replying right now off list to Mark's query. What he's asking is not of interest to most users; mostly for advanced developers. - MLD On Wed, Jul 6, 2016, at 10:02 AM, Mark Napier wrote: > Hello, > > With help from Michael I've made up a patch file for the db_tvrx.cpp > and dboard_iface.cpp.

Re: [Discuss-gnuradio] installing gnuradio on Windows

EDIT: After so may trials and searches, I found that the problem resides inside the file: "Step2-GetStage1Packages" where it wants to build libraries with "msbuild". I tried to run the command alone and it turned out that the command is wrong syntactically: it must use : *msbuild vstudio.sln /m

[Discuss-gnuradio] Fwd: Broken Pybombs install, stuck again

-- Forwarded message -- From: Mark Napier Date: Mon, Jul 4, 2016 at 8:13 PM Subject: Re: Broken Pybombs install, stuck again To: Marcus Müller Hello Marcus, Thank you for the reply. Yes, I sourced the script before the compile

[Discuss-gnuradio] Macports Patch File

Hello, With help from Michael I've made up a patch file for the db_tvrx.cpp and dboard_iface.cpp. Next step would be to apply the patch, recompile, and install the UHD to test it using macports. Google is not finding the recipe. Anyone know how to do this? Thank you much, Mark Napier

Re: [Discuss-gnuradio] When to use message vs stream ?

Hi Jeon, As soon as you have packetized data, yes, I agree, messages will usually be easier to deal with. To apply the concept of limited bursts to sample streams, there's the "tagged stream block" paradigm, which you could understand as the zombie love-child of streams, stream tags and the

[Discuss-gnuradio] When to use message vs stream ?

Primer: http://gnuradio.org/doc/doxygen/page_msg_passing.html Though GNU Radio is 'stream' based, lots of communication systems have well-defined concepts of packet and frame. For those cases, it is sometimes useful to use message passing rather than stream. Say, publishing and subscribing a

[Discuss-gnuradio] installing gnuradio on Windows

Hi all, I tried to install GNURadio with the given instructions in the link below: https://github.com/gnieboer/gnuradio_windows_build_scripts I downloaded all the dependencies, however, at the "second stage", while building dependencies, I encountered an error like (for Zlib): Validation

Re: [Discuss-gnuradio] The AttributeError problem now that I have modified a working OOT

Yeah, I didn't trace back where that happened. Might be that my specific version of SWIG tries to link against that destructor's symbol. I really can't tell. Still, technically, Sylvain is right, such errors can hit you late when runtime dynamically loads/links. Best regards, Marcus On

Re: [Discuss-gnuradio] The AttributeError problem now that I have modified a working OOT

When Marcus build my OOT, he encountered both a "was not declared in this scope" comp error and an undefined reference linking error. (See his previous post in this discussion.) I did not encounter any errors or warnings building the exact same source. I'm trying to understand why. On