[Discuss-gnuradio] _post to message port with python handler

2015-07-10 Thread Jared Dulmage
This is a follow-up to a prior question I asked under the title 'message passing: _post or strobe' that didn't get much attention. I was trying to use basic_block._post from python to send messages to a python block in my flowgraph. As a sanity check I also tried using a message_strobe block,

Re: [Discuss-gnuradio] Packet Header Generator and Stream CRC32

2015-07-10 Thread Martin Braun
On 10 Jul 2015 01:38, "zs" wrote: > If I want to have a working CRC,what is the number of packet length at least? 32 bits. > If someone don't want to use the Stream CRC32 block,Packet Header Generator still will add the crc at bit 24-31.Is it right?I suggest the code should add a function to jud

Re: [Discuss-gnuradio] gentoo compile errors

2015-07-10 Thread Rick Farina
I am unable to replicate with gcc 4.8.4 which is stable in gentoo. What version of gcc are you using? -Zero_Chaos On 06/29/15 18:32, Mike Markowski wrote: > I've been getting these errors when trying to update gnuradio for a week > or so now. (I admit to not having tried to tackle them yet, hop

Re: [Discuss-gnuradio] USRP transmitting timestamp

2015-07-10 Thread Marcus Müller
Hi Chun Huai Du, > I think that is a packed based transmitting. The semantic differentiation between frame and packet is not very sharp, especially between computer scientists and radio communication engineers, so I think you're right! > is there any method to get the transmitting timestamp of USR

[Discuss-gnuradio] USRP transmitting timestamp

2015-07-10 Thread ChunHuai Fu
hi, I want to transmit a frame from a USRP to another USRP. I think that is a packed based transmitting. is there any method to get the transmitting timestamp of USRP sink? I check the usrp_sink_impl.cc. there is the "_metadata.time_spec", it will update by the num_sent and the samp_rate. but

Re: [Discuss-gnuradio] Cross compile GNURadio on ARM in Odroid XU3

2015-07-10 Thread West, Nathan
On Thu, Jul 9, 2015 at 2:00 AM, shaunwang wrote: > Hello Nathan > > Firstly I am really grateful for your long suggestions. I am very surprised > to spend so much time writing this for me. > > Secondly, I already tried building GNU Radio natively in Odroid xu3 and > Hummingboard. They both took l

[Discuss-gnuradio] SOCIS project update 6

2015-07-10 Thread Johannes Demel
Hey GNU Radio'ers! It is time for another project update. I started the week with a quick test if I could improve successive cancellation list decoding. Though, I wanted to focus on channel construction this week. So I did. For polar codes one might consider different binary discrete memoryless ch

Re: [Discuss-gnuradio] ImportError: No module named osmosdr on Mac

2015-07-10 Thread Veljko Pejovic
OK, the issue resolved itself once I removed the manual installation of osmosdr and installed it using Macports: port install gr-osmosdr Veljko On Fri, Jul 10, 2015 at 11:00 AM, Veljko Pejovic wrote: > Hi, > > After a while I got back to playing with gnuradio, and I'm happy to > see that the ch

[Discuss-gnuradio] ImportError: No module named osmosdr on Mac

2015-07-10 Thread Veljko Pejovic
Hi, After a while I got back to playing with gnuradio, and I'm happy to see that the choice of available/supported hardware is much wider than it used to be a few years ago. I've got one of those DVB-T USB dongles, installed rtl-sdr software to confirm that the device works (yes, I can listen to

[Discuss-gnuradio] Packet Header Generator and Stream CRC32

2015-07-10 Thread zs
Hello everyone, I have 3 questions want to ask you,thanks. 1.I look at this in the api, Uses the following header format: Bits 0-11: The packet length (what was stored in the tag with key len_tag_key) Bits 12-23: The header number (counts up everytime this function is called) Bit 24-31: 8-Bit