Thanks Ali, I'll take a look at what you found with inconsistencies and see if I can hunt them down.
On Wed, May 1, 2019 at 5:35 PM Ali Dormiani <sdorm...@eng.ucsd.edu> wrote: > Hello GhostOp14 and USRP users, > > Your oot blocks are amazing. They do exactly what we need in a clean way. > In testing, we have found that there are rare anomalies though (occur like > a rare Poisson process). > > 1. Sometimes the advanced file sink will create an empty file of 0 bytes. > > 2. Sometimes the state timer messes up. We avoid a runaway data capture by > using the 'max file size' parameter in the advanced file sink. > > Overall, this solution is very good and eliminates a lot of variables from > our experiments. All of our USRP devices are initialized once and > constantly stream data (only some of which is saved). Our phase calibration > is a lot more consistent now. > > Thank you again for providing these oot blocks on Github. My own custom > embedded python block was inelegant and inconsistent. > > Cheers, > > Ali > > > On Wed, May 1, 2019 at 6:19 AM GhostOp14 via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Morning everyone, not sure my note yesterday hit the list correctly so >> I'm trying again. >> >> Mark: I have a solution for you. I added a new block yesterday to >> gr-filerepeater (pybombs or github). There's now a state timer block >> that'll generate a message based on block-specified timing. Trigger time, >> cycle time, etc. gr-filerepeater also has a new file sink block I've added >> in the past couple of weeks specifically to address the same kind of >> problem. You can feed the timer msg out to the new sink msg in. The new >> block will then key off the state (1/0) in the msg metadata and start/stop >> writing to a file. You can specify a directory and a base file name, then >> every time a new file write is started it'll append a timestamp. Should >> exactly match up to what you're trying to accomplish. I'll post on the >> gnuradio list as well since they're gnuradio blocks. >> >> >> >> On Mon, Apr 29, 2019 at 8:24 PM Marcus D. Leech via USRP-users < >> usrp-users@lists.ettus.com> wrote: >> >>> On 04/29/2019 08:08 PM, Mark Wagner via USRP-users wrote: >>> > Hey all, >>> > >>> > I'd like to know how to write short files of streamed USRP data >>> > periodically using GNUradio. For instance, I'd like the USRP to >>> > automatically record 5 seconds of data every 10 minutes. It does not >>> > matter to me whether the USRP is constantly on and most of the data is >>> > being discarded, or if the USRP wakes up every 10 minutes to record >>> > the data before sleeping. Whichever is easiest to achieve is fine by >>> > me. Does anyone have experience doing this kind of thing? >>> > >>> > -Mark >>> > >>> > >>> > >>> > -- >>> > Mark Wagner >>> > University of California San Diego >>> > Electrical and Computer Engineering >>> > >>> > >>> If you're using Gnu Radio, you can simply use the file sink, and have it >>> record to "/dev/null" most of the time, then have something (perhaps via >>> the XMLRPC built-in feature) change the filename to whatever your >>> desired filename is, and then revert it back to "/dev/null". >>> >>> I think I said the same thing on the discuss-gnuradio mailing list a few >>> days ago. >>> >>> The usrp-users mailing list isn't the best place to ask Gnu Radio >>> questions, a question like this, which is inherently radio-type >>> agnostic, probably >>> belongs on the discuss-gnuradio mailng list, because it's more about >>> "how do I make Gnu Radio dance". >>> >>> >>> >>> _______________________________________________ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >
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