On 03/01/2016 10:43 AM, Marcus D. Leech wrote:
The only thing really missing in gr-uhd is the ability to do timed
commands. You can force integer-N mode by constructing your own
tune_request that includes the integer-N option. You'd use a
feature from the latest Gnu Radio to help you with this, because it
involves
getting into the internal structure of a tune_request blob. So, use
the "Python module" block, and in that Python do something like:
def integer_N_tune_me(freq):
r = uhd.tune_request(freq)
r.args = {"mode_n" : "integer"}
return r
Then, in your UHD source/sink block, instead of using your target
frequency directly, use:
your_module_name.integer_N_tune_me(desired_freq)
Martin could probably comment on the feasibility of adding timed
commands to gr-uhd.
What I actually meant wasn't that gr-uhd doesn't have timed-command
support, but rather, the GRC scaffolding for this doesn't really
exist. If you write your own Python, you can of course use
timed-commands with gr-uhd, and in fact if you're willing to edit the
output of GRC (generated Python) you can wire-in timed-commands
fairly easily, it's just that there's no way to set this up with
the existing UHD blocks for GRC (yet).
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