Re: [Discuss-gnuradio] Modifying C++ Files

[Ben Reynwar]

On Wed, Apr 11, 2012 at 3:29 PM, Samuel Ibarra <address@hidden> wrote:
> Hello Ben,
>
> Thank you for your help. I was able to get the result I wanted with the line
> of code you suggested. I was changing d_constellation[0] = gr_complex(-1,0)
> to d_constellation[0]= gr_complex(0,0). In order to demodulate my signal, I
> should be able to make the same change in the demodulator part of the code,
> correct?

Yes.

On the off chance that you decide you want to edit the
digital_constellation.cc file (rather than using the generic
constellation_calcdist)  make sure that you also edit the
decision_maker method.

> Thank you very much for your help and time.
>
> Thanks
> Sam
>
> On Tue, Apr 10, 2012 at 7:09 PM, Ben Reynwar <address@hidden> wrote:
>>
>> Hi Sam,
>>
>> In bpsk.py you'll see the line
>>
>> constellation = digital_swig.constellation_bpsk()
>>
>> If you change this to:
>>
>> constellation = digital.constellation_calcdist((1+0i, 0+0i), [], 1, 1)
>>
>> , you should get the change in modulation you want.
>>
>> You only need to mess with the digital_constellation.cc file if you
>> want to implement an efficient non-generic
>> decision maker for this modulation.
>>
>> To know why what you're doing isn't working, I'd need to know what
>> modifications you're making to the .cc file.  It sounds like you're
>> doing everything right.
>>
>> Cheers,
>> Ben
>>
>> On Tue, Apr 10, 2012 at 11:34 AM, sibar002 <address@hidden> wrote:
>> >
>> > Hello,
>> >
>> > I am attempting to modify the bpsk.py file in order to obtain OOK
>> > modulation. I would like to change my constellation points to 1+0i and
>> > 0+0i.
>> > I understand that the digital_costellation.cc file is being used to set
>> > these parameters. I have tried to modify the digitial_constellation.cc
>> > file
>> > in the gr-digital folder, but I am not able to see any changes. I have
>> > made
>> > sure that I make and make install every time I change the file. I was
>> > hoping
>> > someone could tell me what I am doing wrong. I would greatly appreciate
>> > any
>> > help or advice that anyone could give me. Thank you for your time and
>> > help.
>> >
>> > Sam
>> >
>> > --
>> > View this message in context:
>> > http://old.nabble.com/Modifying-C%2B%2B-Files-tp33663518p33663518.html
>> > Sent from the GnuRadio mailing list archive at Nabble.com.
>> >
>> >
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>