Re: [Discuss-gnuradio] A few questions about subclassing gr_block

2013-05-03 Thread Martin Braun (CEL)
On Fri, May 03, 2013 at 11:04:40AM +1200, Mark Cottrell wrote: I am trying to create a block that detects sync patterns at baseband tagging the first sample of the pattern using stream tags, then using the tags down That's the correct way to do it, if you ask me. Just to clarify: Before you

Re: [Discuss-gnuradio] A few questions about subclassing gr_block

2013-05-03 Thread Martin Braun (CEL)
On Fri, May 03, 2013 at 09:08:34AM +0200, Martin Braun (CEL) wrote: Currently I have an implementation of the block, but I am having trouble understanding the relationship between ninput_items and noutput_items.   When I feed the block from a file source consisting of 720 samples, I get

Re: [Discuss-gnuradio] 4rx FPGA image issue

2013-05-03 Thread Nada ABDELKADER
I'm using UHD 003.005.002-47-g4a860d74 I'm working on narrowband/tunnel.py. I changed the usrp_source call to create 4 channels, I added all necessary connections. I made those changes with two channels using the default fpga image and it worked well. mle...@ripnet.com a écrit : On 02

Re: [Discuss-gnuradio] build-gnuradio under Ubuntu 13.04

2013-05-03 Thread Alexandru Csete
On Fri, May 3, 2013 at 4:37 AM, Marcus D. Leech mle...@ripnet.com wrote: Has anyone experienced any build failures in UHD on Ubuntu 13.04 using build-gnuradio? I haven't upgraded my Ubuntu system yet, and I have had one report of a UHD build failure on Ubuntu 13.04 due to libboost1.49,

Re: [Discuss-gnuradio] Error in Building UHD on Windows

2013-05-03 Thread Zooz Engineer
Hi Marcus, Please find attached the txt file with the warnings. Cheers, Zo Date: Thu, 2 May 2013 11:18:59 -0700 From: ml-node+s4n41109...@n7.nabble.com To: xtmpcvs...@hotmail.com Subject: Re: Error in Building UHD on Windows If everything works fine: Ignore them. The first one

Re: [Discuss-gnuradio] build-gnuradio under Ubuntu 13.04

2013-05-03 Thread Sean Nowlan
On 05/03/2013 08:59 AM, Sean Nowlan wrote: On 05/02/2013 10:37 PM, Marcus D. Leech wrote: Has anyone experienced any build failures in UHD on Ubuntu 13.04 using build-gnuradio? I haven't upgraded my Ubuntu system yet, and I have had one report of a UHD build failure on Ubuntu 13.04 due to

Re: [Discuss-gnuradio] build-gnuradio under Ubuntu 13.04

2013-05-03 Thread mleech
On 03 May 2013 09:00, Sean Nowlan wrote: On 05/03/2013 08:59 AM, Sean Nowlan wrote: On 05/02/2013 10:37 PM, Marcus D. Leech wrote: Has anyone experienced any build failures in UHD on Ubuntu 13.04 using build-gnuradio? I haven't upgraded my Ubuntu system yet, and I have had one

Re: [Discuss-gnuradio] Error in Building UHD on Windows

2013-05-03 Thread Marcus Müller
Looked at those code lines, since I wasn't used to the compiler output of msvc; everything looks fine. Cheers, Marcus Am 03.05.2013 13:12, schrieb Zooz Engineer: Hi Marcus, Please find attached the txt file with the warnings. Cheers, Zo

Re: [Discuss-gnuradio] build-gnuradio under Ubuntu 13.04

2013-05-03 Thread Ben Hilburn
I updated the GNURadio Ubuntu install instructions for the 1.53 special case. It's a known safe option, so it should generate less issues. I'll update the wiki once Ubuntu updates the libboost-all-dev meta-package to the newer version. Cheers, Ben On Fri, May 3, 2013 at 7:14 AM,

Re: [Discuss-gnuradio] Error in Building UHD on Windows

2013-05-03 Thread Josh Blum
On 05/03/2013 06:12 AM, Zooz Engineer wrote: Hi Marcus, Please find attached the txt file with the warnings. These are just implicit casts that cause default warnings in MSVC, but not GCC. We generally fix these by just explicitly casting. There is nothing to worry about. I will add the

Re: [Discuss-gnuradio] UDP connection to python-C#

2013-05-03 Thread Ben Hilburn
Adriana - The GNURadio UDB source / sink blocks are just receiving / sending samples via a UDP port. You can use a block, or a C# application that just listens to the socket. Look at the implementation of the UDP source if you are confused. It is just using 'basic UDP sockets'.

Re: [Discuss-gnuradio] UDP connection to python-C#

2013-05-03 Thread Marcus Müller
Hi Adriana, there is something wrong with the involved terminology here, so hopefully I understand your question correctly: You use an USRP E110, on which you run an GNU Radio flowgraph that you created in python. You have another computer somewhere else, that has a C# runtime on it. You want to

Re: [Discuss-gnuradio] Trouble posting messages to block's message port

2013-05-03 Thread Marcus Müller
Hi Sean, have you tried using tb.msg_connect(src, out_port_id, dst, in_port_id) instead of tb.connect? Cheers Marcus Am 03.05.2013 00:35, schrieb Sean Nowlan: I'm trying to create a block that accepts messages and prints them out. I created a block that extends gr_block and it has no stream

Re: [Discuss-gnuradio] About FPGA-ADC/DAC and RF frontend Latency

2013-05-03 Thread Ben Hilburn
NaceurElOuni - I think I'm having trouble understanding your question. I'm not sure what you want to measure, or how you intend to measure it. For starters, there isn't really a shared concept of 'time' between the FPGA and the analog components. The FPGA operates in terms of clocks... which

Re: [Discuss-gnuradio] Why other correlators(ml or pnac) can not work in ofdm example except for Schmidl and Cox correlator(default)?

2013-05-03 Thread Ben Hilburn
Hi Yingjie Chen - If your schedule requires that the code work, then feel free to hack on it and make it work! That's the beauty of open source. You could then contribute your code back to the community, thus helping everyone that has put effort into making GNURadio what it is, today =) Cheers,

Re: [Discuss-gnuradio] Trouble posting messages to block's message port

2013-05-03 Thread Sean Nowlan
On 05/03/2013 01:26 PM, Marcus Müller wrote: Hi Sean, have you tried using tb.msg_connect(src, out_port_id, dst, in_port_id) instead of tb.connect? Cheers Marcus I'm trying to post a message to a port from top_block as opposed to connecting the output port of one block to the input of dst.

Re: [Discuss-gnuradio] Trouble posting messages to block's message port

2013-05-03 Thread Sean Nowlan
On 05/03/2013 01:41 PM, Sean Nowlan wrote: On 05/03/2013 01:26 PM, Marcus Müller wrote: Hi Sean, have you tried using tb.msg_connect(src, out_port_id, dst, in_port_id) instead of tb.connect? Cheers Marcus I'm trying to post a message to a port from top_block as opposed to connecting the

Re: [Discuss-gnuradio] About FPGA-ADC/DAC and RF frontend Latency

2013-05-03 Thread mepard
Hint 1: If both 210s are on the same PPS and frequency reference and the FPGA clocks are synchronized to the PPS, you can schedule the transmit and receive to within one tick of the 100 MHz ADC clock. Hint 2: Cross correlate the transmitted and received samples. The lag will be independent of

Re: [Discuss-gnuradio] Installation-Problem:

2013-05-03 Thread Wolfgang Buesser
O.k. I managed to make it work by removing every file named *usrp* or *gnuradio* and reinstalling gnuradio and uhd from the repository. Now the examples seem to work on my usrp1. But I am quite desperate at getting my old python code to work. I have programmed a vector-network-analyzer. I used

Re: [Discuss-gnuradio] Installation-Problem:

2013-05-03 Thread Erik Jakobsen
Nice to hear, that you have made progress Wolfgang. GL with the rest 73s Erik OZ4KK O.k. I managed to make it work by removing every file named *usrp* or *gnuradio* and reinstalling gnuradio and uhd from the repository. Now the examples seem to work on my usrp1. But I am quite desperate at

Re: [Discuss-gnuradio] gr-osmosdr in MacPorts

2013-05-03 Thread alanwoodward
Michael, the update seems to work, I have built (using macports) the whole of gnuradio and the osmosdr module. All seems to work with the osmo and rtl sources and sink appearing in companion and being able to hook them together. I am having a problem getting a graph to execute however,

[Discuss-gnuradio] USRP2 + WBX for DVB-T replaying

2013-05-03 Thread Dinos Pastos
Hi there, I have a USRP2 with WBX board which has been sitting around doing nothing. I was wondering if it is possible to use this hardware to get a live DVB-T signal and replay it back. What I want to do is to intercept entitlement management messages and modify/remove them on the fly. Please

Re: [Discuss-gnuradio] GSoC Students: Application deadline

2013-05-03 Thread Martin Braun (CEL)
Hi all GSoC applicants, thanks for submitting so many fantastic GSoC proposals! Just a quick status update: We have received 28 applications; we will know about the number of slots next week Wednesday. Realistically, I am expecting 2-4 slots for GNU Radio. Selecting students will be hard, and I

Re: [Discuss-gnuradio] About FPGA-ADC/DAC and RF frontend Latency

2013-05-03 Thread NaceurElOuni
Thank you Marc, * Ok I will try using a common clock ref and input PPS * Scheduling the transmit and receive to within one tick of the 100 MHz ADC clock: Can that be done into the host GNU radio code or am supposed to move the code to the FPGA. * Is that the samples count method to get

Re: [Discuss-gnuradio] About FPGA-ADC/DAC and RF frontend Latency

2013-05-03 Thread NaceurElOuni
Hi Ben, Thanks for explanations, I've been doing some theoretical calculations on the group delay estimation and found that this part is giving negligible latency compared to the Ethernet portion between USRP and host. cheers. 2013/5/3 Naceur Amine El Ouni naceuram...@gmail.com Thank you

Re: [Discuss-gnuradio] Trouble posting messages to block's message port

2013-05-03 Thread Martin Lülf
I had this issue once and if I remember correctly, connecting the block to the flowgraph (i.e. connect any block to your message port, even if that port will never send messages) will make your message handler react to messages from your python code. Hope this helps Martin Am 03.05.2013

Re: [Discuss-gnuradio] Trouble posting messages to block's message port

2013-05-03 Thread Nowlan, Sean
From: discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org [discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org] on behalf of Martin Lülf [m...@mluelf.de] Sent: Friday, May 03, 2013 7:59 PM To: discuss-gnuradio@gnu.org Subject: Re:

[Discuss-gnuradio] Problem in Accessing GNU Radio.org web link -reg

2013-05-03 Thread Mr. R. Gandhiraj
Sir, This is Gandhiraj R, from Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India. Currently many of our students working in GNURadio based projects. Recently we can not access the GNURADIO.ORG web link. Error message: --- Access Denied The owner