[Discuss-gnuradio] Using gr.head with multi-channel receiving

2012-03-28 Thread shea_watson
Hello, I am trying to receive two channels at once with the USRP N210 and a TVRX2 daughterboard. My code to set up the top block is below: class collect_double_tb(grc_wxgui.top_block_gui): def __init__(self,centerfreq0,filename0,centerfreq1,filename1,nsamples):

[Discuss-gnuradio] Problem using TVRX2 on multiple channels

2012-02-25 Thread shea_watson
Hello, I'm using Ubuntu 11.10, UHD 003.004.000, the USRP N210, and the TVRX2 card. I am trying to use both the receive channels at once but I am getting a strange error. Below is my code: self.Add(self.wxgui_fftsink2_0.win) self.uhd_usrp_source_0 =

Re: [Discuss-gnuradio] Problem using TVRX2 on multiple channels

2012-02-25 Thread shea_watson
/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py, line 2826, in usrp_source return _uhd_swig.usrp_source(*args) RuntimeError: Operation not permitted Am I not calling the constructor for the source right? Jason Abele wrote: On Sat, Feb 25, 2012 at 3:16 PM, shea_watson watson.s

Re: [Discuss-gnuradio] Problem using TVRX2 on multiple channels

2012-02-25 Thread shea_watson
! It was this line that I needed: self.uhd_usrp_source_0.set_subdev_spec(A:RX1 A:RX2, 0) Also, I had to update my UHD drivers. Must've been broken somewhere. Thanks! SW mleech wrote: On 25/02/12 09:00 PM, shea_watson wrote: Now i'm getting another error that i wasn't

Re: [Discuss-gnuradio] ATSC decoding - Now Working!

2012-02-20 Thread shea_watson
Was anyone able to collect some ATSC data over the weekend? Also bump about my question about which fr.atsc module does the symbol detection and recovery. Thanks! shea_watson wrote: Alright. If I get it working I will post my fixes. Which part is not working? Also, my research only

Re: [Discuss-gnuradio] ATSC decoding - Now Working!

2012-02-18 Thread shea_watson
Alright. If I get it working I will post my fixes. Which part is not working? Also, my research only deals with extracting the bit delay to the data sync frame. So, I will not really be doing much with atsc decoding past getting a bit stream what would include the sync frame. Which also

Re: [Discuss-gnuradio] ATSC decoding - Now Working!

2012-02-16 Thread shea_watson
Nick, I apologize if this is bringing back old ghosts but I am doing research with ATSC signals and gnuradio and would like that sample ATSC capture that you posted. i cannot find where you posted it. Do you happen to still have it? Thanks, SW Nick Foster-4 wrote: Achilleas, I live