Talk:FAQ

NOTE: This page is not a support forum.

Future Edits: Hardware support
After inclusion of gr-soapy in an official release, as well as gr-iio: Needs to state something like

Does GNU Radio support my SDR hardware?
If you've got a


 * Ettus / National Instruments USRP: yes, through the included `gr-uhd` module (use the `USRP Sink` / `USRP Source`)
 * a IIO device like the ADALM Pluto SDR: yes, through the included `gr-iio` module (GNU Radio version 3.x.y.z upwards)
 * Any other device (e.g. RTL-SDR dongles): if there's a soapysdr plugin [Link to Soapysdr] for it, then it can be used through gr-soapy (GNU Radio version 3.a.b.c upwards)

Generally, gr-soapy is an abstraction that unifies access to many different SDRs. This means your flow graph might also work for others with different hardware, but especially for the more complex hardware (e.g. USRPs), this means you don't get access to all the functionality of your device.

Hi, I recently started using GNURadio. My initial attempts consisted of a simple flow containing an osmocom Source block, a DC Blocker block, and a QT GUI Sink block. The application works under Windows, but not under Linux (Ubuntu 20.04.4 LTS). The message in the console is listed below. Can you help me with some advice? Thank you in advance!

Generating: '/home/catalin/Documents/GNURadio/RadioFM.py'

Executing: /usr/bin/python3 -u /home/catalin/Documents/GNURadio/RadioFM.py

gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0 built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp [INFO] [UHD] linux; GNU C++ version 9.2.1 20200304; Boost_107100; UHD_3.15.0.0-2build5

RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (hw:1,0), Device or resource busy.

Using HackRF One with firmware 2021.03.1 Traceback (most recent call last): File "/home/catalin/Documents/GNURadio/RadioFM.py", line 185, in    main File "/home/catalin/Documents/GNURadio/RadioFM.py", line 163, in main tb = top_block_cls File "/home/catalin/Documents/GNURadio/RadioFM.py", line 127, in __init__ self.connect((self.osmosdr_source_0, 0), (self.dc_blocker_xx_0, 0)) File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line 37, in wrapped func(self, src, src_port, dst, dst_port) File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line 105, in connect self.primitive_connect(*args) TypeError: primitive_connect: incompatible function arguments. The following argument types are supported: 1. (self: gnuradio.gr.gr_python.hier_block2_pb, block: gnuradio.gr.gr_python.basic_block) -> None 2. (self: gnuradio.gr.gr_python.hier_block2_pb, src: gnuradio.gr.gr_python.basic_block, src_port: int, dst: gnuradio.gr.gr_python.basic_block, dst_port: int) -> None

Invoked with: , , 0, , 0 swig/python detected a memory leak of type 'gr::basic_block_sptr *', no destructor found.

>>> Done (return code 1)

Generating: '/home/catalin/Documents/GNURadio/RadioFM.py'

Executing: /usr/bin/python3 -u /home/catalin/Documents/GNURadio/RadioFM.py

gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0 built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp Using HackRF One with firmware 2021.03.1 Traceback (most recent call last): File "/home/catalin/Documents/GNURadio/RadioFM.py", line 185, in    main File "/home/catalin/Documents/GNURadio/RadioFM.py", line 163, in main tb = top_block_cls File "/home/catalin/Documents/GNURadio/RadioFM.py", line 127, in __init__ self.connect((self.osmosdr_source_0, 0), (self.dc_blocker_xx_0, 0)) File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line 37, in wrapped func(self, src, src_port, dst, dst_port) File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line 105, in connect self.primitive_connect(*args) TypeError: primitive_connect: incompatible function arguments. The following argument types are supported: 1. (self: gnuradio.gr.gr_python.hier_block2_pb, block: gnuradio.gr.gr_python.basic_block) -> None 2. (self: gnuradio.gr.gr_python.hier_block2_pb, src: gnuradio.gr.gr_python.basic_block, src_port: int, dst: gnuradio.gr.gr_python.basic_block, dst_port: int) -> None

Invoked with: , , 0, , 0 swig/python detected a memory leak of type 'gr::basic_block_sptr *', no destructor found.

>>> Done (return code 1)

RTL-SDR issues
Hi,

I am using Ubuntu 20.04, gnuradio 3.10. I am having trouble getting gnuradio to recognize my RTL-SDR. When I add the RTL-SDR source block in gnuradio I am given the option to add a device argument but I don’t know what to put into this section so that gnuradio recognizes my device.

Any help is much appreciated.

Thanks!