24 Apr 2025 at 11:42, Marcus Müller wrote:
> Hi Huang Wei,
>
> nice to have you here!
>
> Can you show us where you use `_param` in your C++ implementation?
> What you show us looks right, in general.
>
> Best regards,
> Marcus
>
> On 4/22/25 4:56 PM, H
And I have added in the .yml file:
callbacks:
- set_param(${param})
But still the value can't be changed.
On Tue, 22 Apr 2025 at 15:16, Huang Wei wrote:
> Hello everyone,
>
> In Gnu Radio 3.10, how to set a variable in a C++ OOT block that can be
> adjusted dynamically by a
Hello everyone,
In Gnu Radio 3.10, how to set a variable in a C++ OOT block that can be
adjusted dynamically by a QT GUI range?
I did in a .h file:
Private:
float _param;
Public:
void set_param(float param) {_param = param;}
and in the impl.cc file:
_param = param;
anywhere else I n
mples
> after that, N const., I'd assume?).
>
> Note that DFTs of vectors of different length are very hard to compare,
> and you might want
> to be careful with statements you make based on these.
>
> Can you explain what the purpose of this block would be, from a higher
Hello everyone,
For my program, in every 20 ms, I need to choose 60% of data in the stream
(I marked them with stream tags "start" and "stop"), then do FFT and plot,
and discard the following 40%. Is it possible to do all of this in gnuradio
with OOT blocks?
I was thinking of keep M in N, but whe
Thank you Marcus for reminding me of this.
I need a high tuning rate, that's why I didn't choose to tune the USRP
directly.
Regards,
Wei
On Fri, 3 May 2024 at 14:40, Marcus D. Leech
wrote:
> On 03/05/2024 09:39, Huang Wei wrote:
>
> I am actually trying to input this sweepi
09:24, Huang Wei wrote:
> > Hi Adrian and Marcus,
> >
> > That solved the problem : )
> > Thank you very much for your help!
> >
> > Kind regards,
> > Wei
> You're welcome.
>
> I'll note that your probe is operating at 10KHz. Actual real
Hello GNURadio community,
I am trying to generate a sweeping frequency signal. I use a probe to
detect a Triangle signal with 1 s period, and measure the level using
function probe.
Then I set the frequency of the signal source to 10e6 * func_probe, hoping
it starts to sweep from -5e6 to 5e6 Hz wi
Problem solved, I need to add in the yml file "vlen: 1024 " for both inputs
and outputs.
Huang Wei 于2021年10月18日周一 下午3:12写道：
> Hello group,
>
> I am writing a C++ OOT module in GNU radio operating in vectors of length
> 1024. So in the .cc file I wrote:
> gr
Hello group,
I am writing a C++ OOT module in GNU radio operating in vectors of length
1024. So in the .cc file I wrote:
gr::io_signature::make(1, 1, sizeof(float)*1024),
gr::io_signature::make(1, 1, sizeof(float)*1024)),
And in the work function I wrote:
float *out = (float *) o
your
> OOT again from scratch.
>
> Yours
> Martin
>
>
> On 10.10.21 23:30, Huang Wei wrote:
> > Hi group,
> >
> > It could be a simple question, but I could not find the solution. I am
> > writing my own OOT C++ module, I want to add a function get_value
Hi group,
It could be a simple question, but I could not find the solution. I am
writing my own OOT C++ module, I want to add a function get_value() in the
block, so I can use Function Probe to read value in the block through this
function.
so in the lib/my_block_impl.cc, I added:
double my_block_
regards,
Wei
Marcus Müller 于2021年9月30日周四 上午11:38写道：
> Hi Wei,
>
> On 30.09.21 12:04, Huang Wei wrote:
> > Hi Marcus,
> >
> > Thank you very much for the detailed explanation.
> > Basically, in my case, the two repeat blocks will be connected to two
> USRPs separatel
same number of outputs). Then, you could avoid the "Streams to vector"
> and "vector to streams" trickery.
>
> Best regards,
> Marcus
>
> On 29/09/2021 18.10, Huang Wei wrote:
> > Hello everyone,
> >
> > I am testing the transmission of the same s
Hello everyone,
I am testing the transmission of the same signal in parallel through two
repeat blocks (see attached flowgraph). The repeat times of both repeat
blocks are set by the same GUI range from 2 to 10.
When I start running the flowgraph, the two output signals are exactly the
same as exp
Hello group,
I am very new in writing C++ blocks. I just followed GNU Radio tutorials to
write a sync block. I simply used a parameter "double value", so the output
= input * value.
The block works. However, if I use a GUI range to change the parameter
"value" during running of GRC, the output doe
o the
> raspberry Pi. You
> might want to explain what you're trying to build here! Maybe we have some
> recommendations
> on how to get you closer to what you need.
>
> Best regards,
>
> Marcus
>
> On 09.07.21 18:33, Huang Wei wrote:
> > Thank you
Thank you for the quick reply, so if I write the block in C++ or C, it may
work at a higher rate?
Regards,
Wei
Marcus D. Leech 于2021年7月9日周五 下午5:29写道：
> On 07/09/2021 12:05 PM, Huang Wei wrote:
>
> Sorry, I mean it's the underrun problem
>
> Huang Wei 于2021年7月9日周五 下午5:02写道：
Hello everyone,
I am using the embedded python block in GRC to realize some simple
functions. All works fine in the GRC local set-up. However, if I connect a
USRP sink to the flowgraph which includes that python block, and set
the sample rate more than 20 MHz (I need 100 MHz in my case), it will k
Sorry, I mean it's the underrun problem
Huang Wei 于2021年7月9日周五 下午5:02写道：
> Hello everyone,
>
> I am using the embedded python block in GRC to realize some simple
> functions. All works fine in the GRC local set-up. However, if I connect a
> USRP sink to the flowgraph which
or about 200ns.
>
> Nick
>
> On Wed, Jun 16, 2021 at 2:09 AM Huang Wei wrote:
>
>> Hi all,
>>
>> I am very new to Gnuradio and USRP, and I have a question about the code
>> transmission delay between USRPs.
>> I have two USRP E310 with UBX160 daughte
Hi all,
I am very new to Gnuradio and USRP, and I have a question about the code
transmission delay between USRPs.
I have two USRP E310 with UBX160 daughterboards. I send a sequence of code
from one USRP using simple amplitude modulation, and receive it by another
USRP. On the receiver side, I use
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