update: turns out the problem was power squelch block - connecting self.u
directly to self.packet_receiver did the trick...
-----Original Message-----
From: Kresimir Dabcevic
Sent: Mon 5/23/2011 12:03 PM
To: j...@joshknows.com; discuss-gnuradio@gnu.org
Subject: RE: [Discuss-gnuradio] UCLA Zigbee PHY examples updated for UHD
>
>Thanks for the reply Josh.
>
>However, I'm confused by all the frequency setting/tuning functions at our
>disposition. In my example,
>1)I am setting cordic-freq (set by parser) while calling the main program,
>e.g. -c 2450000000 -that's the frequency I want to set my USRP to.
>
>2)output of
>self.u.set_center_freq(options.cordic_freq, 0)
>print "Center frequency: %d" %(self.u.get_center_freq())
>is:
>Center frequency: 2450000000
>
>3)output of
>uhd.tune_request(options.cordic_freq, 0)
>print "Center frequency: %d " %(self.u.get_center_freq())
>print ("%s") %(uhd.tune_result())
>is:
>Center frequency: 2600000000
>Tune Result:
> Target RF Freq: 0.000000 (MHz)
> Actual RF Freq: 0.000000 (MHz)
> Target DSP Freq: 0.000000 (MHz)
> Actual DSP Freq: 0.000000 (MHz)
>
>Why is uhd.tune_request setting the center frequency to 2.6 instead of 2.45
>GHz?
>Also, am I calling the uhd.tune_result function wrong - why are all the values
>0?
>Furthermore, what is the difference between
>self.u.set_center_freq(options.cordic_freq,0).actual_rf_freq and
>self.u.set_center_freq(options.cordic_freq,0) >functions?
>
>Regards,
>Kresimir
-----Original Message-----
From: discuss-gnuradio-bounces+kresimir.dabcevic=fer...@gnu.org on behalf of
Josh Blum
Sent: Mon 5/23/2011 12:54 AM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] UCLA Zigbee PHY examples updated for UHD
>>>
>>>
>>> Blocked waiting for GDB attach (pid = 5466)
>>> Press Enter to continue:
>>> cordic_freq = 2.45G
>>>
>> Not sure whats wrong, but, cordic_freq should be the error in tuning the
>> RF center freq, so only a few kHz really. That may be a good place to
>> start looking.
>>
>> -josh
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
