Re: How to convert complex float file to complex int 16 in Gnuradio For USRP input...

Thanks, This means when I send a complex signal I see it on spectrum, I too send a converted signal and I see a converted signal on the spectrum. Signals are not the same... I expect that signals in two formats (format int16 or float 32 ) be the same on a spectrum. I only have a signal in two forma

How can I check Hackrf is busy or not?

in CPP driver Hackrf there is a method that can find Hackrf but is there a method that I check Hackrf is busy or idle? When I send a signal with Hackrf , Led TX after finished continue on and after 5 seconds it is off... how can I check Hackrf is busy or not? It is idle for new transmitting?

error in building gnuradio 3.8.1 error: cannot convert ‘const nanoseconds in ubuntu 20.04

can anyone guide me on how can solve this error in building gnuradio 3.8.1 from the source.!! error: cannot convert ‘const nanoseconds’ {aka ‘const std::chrono::duration >’} to ‘const nanoseconds&’ {aka ‘const boost::chrono::duration >&’}

Error ! LaTeX Error: File `newunicodechar.sty' not found.

In building Gnuradio 3.8.1 (i need this version not a higher version) I faced a strange error Can anyone guide me? thanks in advance Scanning dependencies of target doxygen_target [ 0%] Generating documentation with doxygen ... ... This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/

Request for help with Comprehensive RFID module in GNU Radio on Linux

Dear GNU Radio community, I am working on a project involving RFID modules in GNU Radio on Linux. I have come across some projects, but they seem to be imperfect. I would appreciate any guidance or suggestions from the community on how to approach this problem. RFID UHF RFID 125Khz RFID 13.56MHZ

Error strange: The daughterboard manager encountered a recoverable error in init.

when I want to use USRP x310 with ubx-160 and twin-rx daughterboard I have faced this strange log... The daughterboard manager encountered a recoverable error in init. Loading the "unknown" daughterboard implementations to continue. The daughterboard cannot operate until this error is resolved. w

how can build gr-osmocomsdr in a linux that gnuradio is built and installed in a custom dir?

I installed Gnuradio in /home/sp/disk1/install/usr/local directory when I want to build gr-osmocomsdr I faced this error... in bashrc i add some environment variables that Gnurado works uhd works but for Gnuradio it can not detect Gnuradio I set all environments correctly How can solve my problem

when in gnuradio top block is started can we change connect blocks?

I have a question about gnuradio blocks when I define gnuradio blocks on a top block and start top block can we changed connection between blocks when tp is running with out stoping it. for example i connect uhd to a null block, after some time i changed uhd to another block? can any one g

How can i designed a FSM and conditional logic control in gnuradio?

Hi, Today I worked on RFID articles, and I had some questions. It is possible to design an RFID reader for frequency 13.56 or 125khz with gnuradio? I read the RFID standards According to RFID flowchart I need to design an FSM (Finite State Machine) for RFID Reader. can anyone guide me? how can writ

how can we implement a pool/worker structure in gnuradio?

In programming, I need to define a pooling layer that updates the last usrp samples and other blocks use these pool samples and compute some operations, I emphasize that my means from pool,the pool is shared for all blocks(the blocks that use pool name as worker) Can anyone guide me? thanks in

How send message with when message is less than sample rate?

When every 3 seconds I call msqq->inserttail, messageTempI is only 64 bytes but the sample rate is 500khz... I know that 64-byte string is more than 500khz samplesbut usrp and uhd in gnuradio send it!!! my question is how message is sent to USRP and how does USRP send it? when samplerate is

Re: how can we implement a pool/worker structure in gnuradio?

After examination I found a solution, you can use copy block in gnuradio for the implementation of a pool structure. On Tue, Aug 29, 2023 at 3:42 PM sp wrote: > In programming, I need to define a pooling layer that updates the last > usrp samples > and other blocks use these pool sa

Can i some one explain what's appllication of subdev in UHD?

Can i some one explain what's appllication of subdev in UHD? How work i should with subdev what's means in UHD? what's difference it with channel in UHD. -- Using subdev spec 'A:AB A:BA B:0'. Jamming hardware initialized... gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.13.4 built-in sink types

ModToolException: Could not find gr-newmod source dir.

in Gnuradio-dev 3.9 when I want to create a block I am faced with this error... how can solve it... gr_modtool newmod tutorial ModToolException: Could not find gr-newmod source dir. thanks in advance

How can install UHD 4 with gnuradio

Hi, I had a question with Gnuradio 3.7.10 or 3.8, UHD version that is used is 3.13 or 3.15. I used the apt-get install command... How can install UHD 4 alongside Gnuradio 3.8on Debian/Ubuntu without compiling it... All work with USRP is in Gnuradio... Thanks in advance

Why UBX 160 gain not work (for RX and TX)

Hi, in my USRP x310 I used a daughterboard ubx160, but in Gnuradio gain is not effect... gain 0 and gain 100 show the same signal...for FM station it can not show any signal How can solve my problem? Gnuardio 3.8.1 UHD 3.15.1 thanks in advance

is there in gnuradio a library that for for,loop case execute parallel computing like open mp?

I want to develop a Gnuradio block, in this block, I have a for, in this for I compute some multiplay and multiply conjugate ... my question is how I can implement a for (in Gnuradio block) so it is executed in parallel mode... thanks in advance

What Is The Proper Way To Change Block Parameters in cpp?

I developed some blocks for Gnuradio in CPP, I defined a multiply constant for a top block in Gnuradio... I run tb(Top block) block, and USRP sends a signal... when USRP is sending a signal I want to change the multiply constant value set to 0 1 5 and. when i used the method...multiplyCon

Re: What Is The Proper Way To Change Block Parameters in cpp?

I reform for Hackrf this problem is not in python GRC and CPP, but for USRP i had problem delay in CPP and python GRC why USRP is so bad in this situation... On Wed, Oct 20, 2021 at 9:45 PM sp h wrote: > I developed some blocks for Gnuradio in CPP, I defined a multiply constant >

Re: What Is The Proper Way To Change Block Parameters in cpp?

For HackRF info there is this delay but it is 5 seconds.. On Wed, Oct 20, 2021 at 9:50 PM sp h wrote: > I reform for Hackrf this problem is not in python GRC and CPP, but for > USRP i had problem delay in CPP and python GRC > why USRP is so bad in this situation... &

Clearing gnuradio buffers or gnuradio buffer blocks....

Hi, dears I read the below link that describes how Gnuradio blocks work together... https://www.gnuradio.org/blog/2017-01-05-buffers/ I had a question: Is there any way to clear the buffers of the Gnuradio blocks in C++ or Python... I want in a time UHD buffer is cleared and send new data? In Gnu

I had a daughterboard UBX 160 for USRP, but after 5 months of working, it can not transmit any signal...

I had a daughterboard UBX 160 for USRP, but after 5 months of working, it can not transmit any signal... Led TX is on but on the spectrum, I can not see any data signal, I can see a weak carrier? how can repair UBX160 USRP? really it is the damage? thanks in advance

Installing Gnuradio 3.8.1 with UHD 4 with out source compiling......

I installed Gnuradio 3.8.1 in ubuntu 20.04, is it possible to install a new version of UHD like 4 instead of UHD 3.15 without source compiling... is it possible or I must compile all Gnuradio..any short way... Thanks in advance

Why noi in block Gnuradio is changed every time........

I developed a block Gnuradio that works with samples block type is sync block. i used a for that i can print samples for(int i=0;i

Error installing Gnuradio from PyBombs

When I want to install Gnuradio from PyBombs(Ubuntu 20.04): any offer to solve errors? thanks in advance sudo -H pip3 install PyBOMBS pybombs auto-config pybombs recipes add-defaults pybombs prefix init ~/gnuradio -R gnuradio-default *Errors:* configure: error: Python headers not found [ERROR]

After building Gnuradio 3.8.1 from source , Cannot import gnuradio

Hi, Before I installed Gnuradio from the binary package it works well. In Ubuntu 20.04 when I want to build Gnuradio from source, it not works... Terminal, I received the following message: *Cannot import gnuradio.* *Is the python path environment variable set correctly? * - All OS: PYTHO

When i want to run some RFNOC blocks in Gnuradio i faced with errors module 'ettus' has no attribute 'device3'

When I want to run some RFNOC blocks in Gnuradio I was faced with errors, How can fix this problem? My environment is Gnuradio 3.8.10 UHD:4.0.0 Ubuntu 20.04 Generating: '/home/sp/Downloads/default1.py' Executing: /usr/bin/python3 -u /home/sp/Downloads/default1.py Traceback (most r

Re: When i want to run some RFNOC blocks in Gnuradio i faced with errors module 'ettus' has no attribute 'device3'

borc-0.4.so.0 => /lib/x86_64-linux-gnu/liborc-0.4.so.0 (0x7f8b75578000) libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x7f8b7554b000) On Mon, Jan 10, 2022 at 2:31 PM Vasil Velichkov wrote: > Hi sp h, > > On 10/01/2022 10.28, sp h wrote: > > When I removed device 3 block

Why rfnoc_graph can not initialize in Gnuradio and CPP, (undefined reference)

Why rfnoc_graph can not initialize in Gnuradio and CPP, I was faced with some undefined symbol errors... I include these header files and below is the source file... #include #include #include #include const::uhd::device_addr_t device("addr=192.168.10.2"); gr::ettus::rfnoc_grap

Re: Why rfnoc_graph can not initialize in Gnuradio and CPP,(undefined reference)

gnuradio-ettus). in CPP project now everything is ok. pkg-config --modversion gnuradio-ettus 3.8.1 Hi sp h, we don't know how you're building this. You'll need to provide us with a > minimal viable example that triggers this and we could do ourselves. > Also, you need to make su

Error in RFNOC blocks in CPP ?? Cannot create! Property already exists at: /blocks/0/DUC#0/noc_id

when I want to convert a GRC python code to CPP code I am faced with NOC graph error? any idea for solving the problem...? I too attached python code... [ERROR] [RFNOC::GRAPH] Caught exception while initializing graph: RuntimeError: Cannot create! Property already exists at: /blocks/0/DUC#0/noc_i

Re: Error in RFNOC blocks in CPP ?? Cannot create! Property already exists at: /blocks/0/DUC#0/noc_id

on, Jan 24, 2022 at 11:05 AM sp h wrote: > when I want to convert a GRC python code to CPP code I am faced with NOC > graph error? > any idea for solving the problem...? I too attached python code... > > [ERROR] [RFNOC::GRAPH] Caught exception while initializing graph: >

Re: Error in RFNOC blocks in CPP ?? Cannot create! Property already exists at: /blocks/0/DUC#0/noc_id

_0->get_unique_id(), 0, false); tb->connect(rx_streamer, 0,tsnk_c , 0); tb->connect(rx_streamer, 0,fsnk_c , 0); tb->start(); On Tue, Jan 25, 2022 at 11:02 AM sp h wrote: > The source code also warns me time out blocks and after it, the program >

Why when I send a complex file with harmonic sequence f1 f2 f3 ...fn, In receiver haromoic sequence gain is changed?

Why when I send a complex file (With USRP x300) with harmonic sequence f1 f2 f3 ...fn, In receiver (USRP x310) harmonic sequence gain is changed? For example, I have a complex file the FFT of a signal has some harmonic peaks f1 f2 ...fn gain of harmonic peaks in the original file is: f1:2 f2:2 f3:3

Re: Why when I send a complex file with harmonic sequence f1 f2 f3 ...fn, In receiver haromoic sequence gain is changed?

With this description for removing this frequency-selective channel which solution exist in digital communications? On Sun, May 8, 2022 at 10:36 AM sp h wrote: > Why when I send a complex file (With USRP x300) with harmonic sequence f1 > f2 f3 ...fn, In receiver (USRP x310) harmonic se

Re: Why when I send a complex file with harmonic sequence f1 f2 f3 ...fn, In receiver haromoic sequence gain is changed?

I mention that problem is not related to USRP, it is a bug in my code and calculations.USRP sends complex samples high-quality less for short distances... Thanks very much On Sun, May 8, 2022 at 2:38 PM sp h wrote: > With this description for removing this frequency-selective channel wh

How to convert complex float file to complex int 16 in Gnuradio For USRP input...

In Gnuradio there are different types that you can see in the below screenshot? How to convert complex float file to complex int 16 in Gnuradio For USRP input I need to convert complex float to complex int... , My question is how can I do this action? Thanks in advance [image: Screenshot from 2022

Changing output of selector block using stream tags

Hello, I am new to GNU Radio and am wondering question in the subject is possible. In my application, I am transmitting a signal from a file source and need to record sections of that signal at periodic intervals into a file sink. However, I noticed that the E320 receives noise before the desir