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[Discuss-gnuradio] Confirming uhd.set_command_time is working

From: Anderson, Douglas J.
Subject: [Discuss-gnuradio] Confirming uhd.set_command_time is working
Date: Mon, 27 Apr 2015 22:03:40 +0000

Hi all,

I'm playing around with timed commands on the USRP, but I'm not sure I understand them correctly.

I've got a usrp connected as "u" and set to center freq 700e6.

>>> u.set_command_time(u.get_time_now() + uhd.time_spec(2)); u.set_center_freq(800e6); u.clear_command_time(); print(u.get_center_freq()); time.sleep(2); print(u.get_center_freq())
-- Successfully tuned to 800.000000 MHz
<gnuradio.uhd.uhd_swig.tune_result_t; proxy of <Swig Object of type '::uhd::tune_result_t *' at 0x7f1b75a3b930> >
[... 2 second pause is here ...]

It looks like it's changing the freq immediately... but I'm assuming as usual there's more than meets the eye to this command. Any hints?


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