Re: Integrate block functionality

2019-12-20 Thread Joe K
e generally found it quicker to write my own block than try to understand what the built-in blocks actually do!! Joe On Fri, Dec 20, 2019 at 8:44 AM Marcus D. Leech wrote: > On 12/20/2019 11:33 AM, Joe K wrote: > > Yeah, I understand it's not a practical thing in reality, this is mostl

Re: Integrate block functionality

2019-12-20 Thread Joe K
Yeah, I understand it's not a practical thing in reality, this is mostly for a short-duration simulation which runs for a few K samples then stops. Obviously any real-world signal with any DC bias would rail this out. I'm still surprised the integrate_x blocks allow a decimation = 1 since that eff

Integrate block functionality

2019-12-20 Thread Joe K
Hi all, Maybe this is a dumb question, but I didn't find any discussion on the web or in the mailing list archives. The integrate block (e.g., blocks.integrate_ff) doesn't seem to operate as I'd expect. What I'm looking for is a block that integrates from time 0 with no decimation. So, an input

Re: [Discuss-gnuradio] Continous Transmission using GNU RADIO. Is it really possible?

2019-05-13 Thread Joe K
Hi, Hopefully I'm not hijacking Mehtap's thread too badly but it seems that the website with gr-eventstream documentation is no longer available. It doesn't seem that there's much inline documentation or anything else in the git repo. Am I missing something? Does anybody have cached copies of t

[Discuss-gnuradio] Diagnosing why a flowgraph occasionally stops processing samples

2019-02-19 Thread Joe K
Hi everybody, I have a very complex flowgraph that sometimes simply stops processing receive samples. It doesn't crash, the transmit side of the flowgraph is still fully operational. There are no exceptions being thrown and nothing indicating that any threads are dying. This makes use of a lot

[Discuss-gnuradio] Interpolating FIR filter with runtime adjustable interpolation value

2017-06-27 Thread Joe K
Hi all, How can I adjust the interpolation of an interpolating FIR filter in real time (e.g., interp_fir_filter_fff)? I'm not a C++ guru but it appears to me that the base class, sync_interpolator, does define a function set_interpolation(). It seems that I should be able to call that, then call

Re: [Discuss-gnuradio] Boosting Output RMS Power of BasicTX Daughterboard

2017-01-10 Thread Joe K
Yes, N210, specifically. On Jan 10, 2017 12:44 PM, "Marcus Müller" wrote: Dear Joe, this is with a USRP2 or N2x0, right? We (Ettus) are investigating that. Best regards, Marcus On 01/10/2017 05:30 PM, Joe K wrote: Did you get a resolution on this issue? We had an old app using

Re: [Discuss-gnuradio] Boosting Output RMS Power of BasicTX Daughterboard

2017-01-10 Thread Joe K
Did you get a resolution on this issue? We had an old app using UHD 3.5.4 that, once upgrade to 3.9.x or newer, drastically lowers the transmit power. In our case we're using subsampling, transmitting at 130 MHz. I don't know if that's related or not. A while back I built a simple flowgraph wit

Re: [Discuss-gnuradio] [VOLK] Problem building on Fedora 22

2016-10-28 Thread Joe K
ing approach to dealing with > the ABI transition in libc. > http://developers.redhat.com/blog/2015/02/10/gcc-5-in-fedora/ > > Try running cmake for volk with -D_GLIBCXX_USE_CXX11_ABI=0 > > Regards, > Derek > > On Fri, Oct 28, 2016 at 5:56 PM, Joe K wrote: > >&

[Discuss-gnuradio] [VOLK] Problem building on Fedora 22

2016-10-28 Thread Joe K
Hi, I'm having a problem building Volk 1.3 or GNU Radio version than 3.7.10 (any) or 3.7.9.3. Versions 3.7.9.2 and older seem to work fine. This is on a Fedora 22 system. I'm getting a ton of undefined reference errors to various Boost functions. I originally thought maybe the installed versio

Re: [Discuss-gnuradio] Message Input port in hierarchical block

2016-01-28 Thread Joe K
Kartik, As far as I am aware, hierarchical blocks cannot process messages. I ran into the same issue, because I had a hierarchical block with several child blocks, and it needed to do some control operations to the child blocks dependent on a received message, without those blocks "understanding"