Question on GRC XML

ref to
http://www.mail-archive.com/[email protected]/msg26987.html

For updating the blks2_dxpsk2_demod.xml to match the usrp_rx_dpsk.py

init(self, samples_per_symbol=2, excess_bw=0.35, freq_alpha=0.01,
phase_alpha=0.01,timing_alpha=0.1, timing_max_dev=1.5, gray_code=True,
verbose=False, log=False,sync_out=False)

I’d like to add freq_alpha and phase_alpha column to the GRC block,
could anyone advice on the callback sections, where’s the clock_recov
and
time_recov.set_alpha go for?

thanks!

  • clock_recov.set_alpha($costas_alpha)
  • clock_recov.set_beta(0.25*$costas_alpha**2)
    time_recov.set_alpha($timing_alpha)

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