Hi, While working with gr-gsm blocks and examples I ran into some weird UHD errors.
I tried to reduce as much as possible the flowgraph complexity, and ended up writing a very simple flowgraph that seems to reliably trigger the UHD errors. I uploaded the flowgraph here: https://gist.github.com/anonymous/d3c0c9f1f72ab7cdc2c3460126682bc6 The point of this flowgraph is to simply tune into a frequency, acquire some samples and proceed with a new acquisition. This is similar to what grgsm-scanner does, with the sample analysis removed. On my hardware (Xeon E5-2650 with USRP B200 on USB3), this flowgraph will produce a lot of UHD errors every time such as: > Tuning to 1934.301035 MHz > Acquisition N° 13 finished > > Tuning to 1619.216092 MHz > > UHD Error: > recv packet demuxer unexpected sid 0xc449c000 > > UHD Error: > recv packet demuxer unexpected sid 0x44208000 > > UHD Error: > recv packet demuxer unexpected sid 0xc4064000 > > UHD Error: > recv packet demuxer unexpected sid 0xc2780000 > ---- snip ---- Am I doing something the wrong way ? Is there a limitation of some kind with the way I retune the USRP ? I first thought that these errors were tied to the processing power required but the flowgraph I wrote just trashes received samples so this is very unlikely. Best, Pierre _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
