Re: [Discuss-gnuradio] Continuously Write FFT Samples to a File

2017-01-12 Thread Hasini Abeywickrama
asari wrote: >> >> Hi Hasini, >> >> If you are trying to print just the FFT, it should not be an issue. If >> you print raw iq samples, then you will run out of memory. By long, you >> mean how long? Days? >> >> On Tue, Jan 10, 2017 at 3:16 PM,

[Discuss-gnuradio] Continuously Write FFT Samples to a File

2017-01-02 Thread Hasini Abeywickrama
Hi all, I have a flowgraph that reads a signal and writes its FFT samples to a file. I need to run this continuously (for a long time), without running out of memory. I tired deleting the earlier FFT samples from the file but that messes up with reading the data. I also tried starting writing to

Re: [Discuss-gnuradio] Getting the Count of FFTs

2016-09-20 Thread Hasini Abeywickrama
tually being flushed. Rethinking the problem is likely > the best way forward. > > I highly recommend option 1 and option 2 as a last resort. Option 2 is > better for when you're no longer doing DSP and passing something like bits > to another process that's great at handling bits.

Re: [Discuss-gnuradio] Getting the Count of FFTs

2016-09-19 Thread Hasini Abeywickrama
it. I need this to be done real time and that's why I'm looking for the most efficient way. Regards, Hasini On Tue, Sep 20, 2016 at 10:34 AM, West, Nathan <n...@ostatemail.okstate.edu> wrote: > > On Mon, Sep 19, 2016 at 6:57 AM, Hasini Abeywickrama <hva...@gmail.com> >

Re: [Discuss-gnuradio] Getting the Count of FFTs

2016-09-19 Thread Hasini Abeywickrama
; Best regards, > > Marcus > >> On 09/18/2016 11:21 PM, Hasini Abeywickrama wrote: >> Hi Marcus, >> >> It's like I need to start reading and processing the file after a certain >> number of FFTs are being written to the file. For that I would nee

Re: [Discuss-gnuradio] Getting the Count of FFTs

2016-09-18 Thread Hasini Abeywickrama
> Marcus > > On 09/18/2016 10:23 PM, Hasini Abeywickrama wrote: > > Hi all, > > I have a GNU Radio flowgraph which uses a USRP to receive a signal, > converts it to log power FFT and then writes the result to a file, using > File Sink. I want to have a counte

[Discuss-gnuradio] Getting the Count of FFTs

2016-09-18 Thread Hasini Abeywickrama
Hi all, I have a GNU Radio flowgraph which uses a USRP to receive a signal, converts it to log power FFT and then writes the result to a file, using File Sink. I want to have a counter which increments with each FFT written to the file. Is there a way of maintaining and increasing count of the

[Discuss-gnuradio] Dynamically Changing the File Name for the File Sink

2016-09-05 Thread Hasini Abeywickrama
Hi all, I have a flowgraph that users a USRP to receive signal and writes it to a file using a file sink. I want to start writing to the file and a specific time precisely. I modified the code to start running the flowgraph at a specific time but booting up the USRP and setting up the flowgraph

Re: [Discuss-gnuradio] USRP B200 Not Transmitting

2016-09-01 Thread Hasini Abeywickrama
Cool. I will try that. Thank you very much :) On Fri, Sep 2, 2016 at 12:08 PM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 09/01/2016 10:05 PM, Hasini Abeywickrama wrote: > > Hi Dan, > > I have tried different gain values from 0 to 20. > > On the TX side, the B

Re: [Discuss-gnuradio] USRP B200 Not Transmitting

2016-09-01 Thread Hasini Abeywickrama
Hi Dan, I have tried different gain values from 0 to 20. On Fri, Sep 2, 2016 at 9:35 AM, Dan CaJacob <dan.caja...@gmail.com> wrote: > What gain are you using? > > On Thu, Sep 1, 2016 at 7:32 PM Hasini Abeywickrama <hva...@gmail.com> > wrote: > >> Hi Dere

Re: [Discuss-gnuradio] USRP B200 Not Transmitting

2016-09-01 Thread Hasini Abeywickrama
the TX LED come on and the RX LED on the other one? > > Thanks, > Derek > > On Wed, Aug 31, 2016 at 10:31 PM, Hasini Abeywickrama <hva...@gmail.com> > wrote: > >> Hi, >> >> I have a USRP B200 set to transmit a signal (using uhd_tx_dpsk.grc in the >> G

[Discuss-gnuradio] USRP B200 Not Transmitting

2016-08-31 Thread Hasini Abeywickrama
Hi, I have a USRP B200 set to transmit a signal (using uhd_tx_dpsk.grc in the GNURadio examples) and another USRP B200 receive the signal (using uhd_rx_dpsk.grc in the GNURadio examples). But the receiving USRP does not receive the signal that is being transmitted by the other USRP, even though

Re: [Discuss-gnuradio] Information on How File Sink Works

2016-08-24 Thread Hasini Abeywickrama
Thank you very much for the information. On Thu, Aug 25, 2016 at 10:44 AM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 08/24/2016 08:28 PM, Hasini Abeywickrama wrote: > > Hi all, > > I have flowgraph that receives a signal from a USRP and converts it to log > p

[Discuss-gnuradio] Information on How File Sink Works

2016-08-24 Thread Hasini Abeywickrama
Hi all, I have flowgraph that receives a signal from a USRP and converts it to log power FFT and then writes the result to a file, using File Sink. I want to understand how writing to the file works. - If the signal is received for *n *seconds and it takes *m *seconds to write to the