[Discuss-gnuradio] SIDsuite
Marcus, I have followed your development of the SID SDR since you first posted during the Western Conference.Excellent work! I am unable to get the first or any configurations to work. My system is: T2862 - Ubuntu 10.10 GNURadio 3.2.2 python 2.6 2.7 and 3.0 3Gb Ram 2.8 Celeron D Issue when trying to run sidstart : chewie@T2862:~$ sidstart Traceback (most recent call last): File "/home/chewie/bin/audioSIDnetRcvr.py", line 575, in tb = audioSIDnetRcvr(f4=options.f4, f3=options.f3, f2=options.f2, f1=options.f1, f5=options.f5, f6=options.f6, hz=options.hz, samp_rate=options.samp_rate, integ=options.integ, igain=options.igain, audio_shift=options.audio_shift, audio_width=options.audio_width, synoptic_length=options.synoptic_length, cfn=options.cfn, filename=options.filename, synoptic_ratio=options.synoptic_ratio, ohwname=options.ohwname, hwname=options.hwname) File "/home/chewie/bin/audioSIDnetRcvr.py", line 216, in __init__ trig_mode=gr.gr_TRIG_MODE_STRIPCHART, AttributeError: 'module' object has no attribute 'gr_TRIG_MODE_STRIPCHART Also When I open audioSIDnetRcvr.grc Import does not work. I cannot import sidsuite or notchfilt. I down loaded sidsuite.tar.gz from your site followed the instructions and can't get it to work. What simple thing am I missing? David Campbell ara.davidcampbel.com Facebook : Frugal Radio Astronomy SARA Member ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] gnuradio 3.3.0 with USRP2 w/ DBSRX: gain settings vs actual
Hi, I've noticed that with the aforementioned configuration that when I set the gain between 0-40 dB that the actual gain out is 0-70 dB. I've seen this across multiple units. Is there a fix for this? Thanks, David ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] CPU Utilization and USRP2
Hi All, I've noticed that the C++ interfaces provided in gnu-radio and UHD for usrp2 data streaming are CPU-intensive (UHD moreso than gnu-radio). I am wondering if there are easy ways to mitigate this or are there plans in the future to diminish these. For UHD a decimate by 16 process chews up 75% of a CPU just on the uhd::device::recv functiion (not much less even when I use RECV_MODE_FULL_BUFF and size the buffer to be 100x the size of a single packet). For gnuradio's the CPU utilization is more like 36% - still a lot. I may try to recode some of the lower-level interfaces in UHD if there is not an easy way to help improve CPU utilization. Thanks for your help, David ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP2 1pps synchronization delay
I'm seeing the same order of values as Cliff is. The delays specified in the link that you posted Josh are too small - the delta is that I'm not using UHD (I'm strictly using gnuradio 3.3.0). The link you posted Josh mentioned that the delays could be calculated. Is there a formula readily available? Otherwise, I'll try to figure it out myself. Also, I'm noticing that my sync_and_start_rx_streaming_at command hangs about 15 out of 16 tries (the other 1 of 16 times or so everything works) - I didn't know if others are seeing this too. Maybe I'm restarting it too fast in succession? I've noticed sometimes I've had better luck waiting a minute or so between restarts. Thanks, David ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] sync_and_start_rx_streaming_at
Hi All, I have an issue with the pps syncing on the USRP2. If I call sync_and_start_rx_streaming_at(0,0,0) then the function call will complete about 1 out of 15 tries (so it just hangs in that call most of the time). I've looked at my pps signal going into the USRP2 and it is exactly what is required. When the call does run to completion and data starts streaming it looks like the timestamp counter is being set properly (i.e. set to 1) . Has anyone run into this problem? I've experienced this on multiple USRP2s. Thanks, David ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] DBSRX with USRP2
Hi All, I've looked at the gnuradio wiki on how to configure the DBSRX for use with the USRP2 (http://gnuradio.org/redmine/wiki/gnuradio/USRP2DBSRXModification ), and they mention a firmware file to upload that I cannot find (burn_dbsrx_eeprom.bin). Is there a new way to configure the DBSRX to work with the USRP2? I just bought the units and the hardware is in the delivered condition. Also, is there a command line utility to detect which daughterboard(s) are on the USRP2? Thanks, David ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
