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 <stackprogra...@gmail.com> wrote:
> 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... multiplyControl->set_k(1);
>
> it changes the constant value and the method multiplyControl->k() return
> constant is changed.......
>
> but signal USRP is changed after 20-30 seconds???????????????????
> in GRC and Python, I had no problem but in CPP I had a problem with delay?
> how can fix it in CPP...
>
> any guide or solution that I can change parameter block when is top block
> is running........
>
> thanks in advance
>
>
>
>
>
>> gr::blocks::multiply_const_cc::sptr
>> multiplyControl(gr::blocks::multiply_const_cc::make(1, 1));
>>
>>
>> gr::blocks::file_source::sptr file_source(
>>
>> gr::blocks::file_source::make(8,fileSelected.c_str(),
>> "true"));
>>
>>
>> this->tb->connect(file_source, 0, multiplyControl, 0);
>>
>> if(transmitterDevice=="usrp2")
>>
>> {
>>
>> this->tb->connect(multiplyControl, 0, this->sinkUHD, 0);
>>
>> }
>>
>> else
>>
>> {
>>
>> this->tb->connect(multiplyControl, 0, this->sink, 0);
>>
>> }
>>
>>
