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[Discuss-gnuradio] gr-ais fails?

From: Ralph A. Schmid, dk5ras
Subject: [Discuss-gnuradio] gr-ais fails?
Date: Sun, 29 Mar 2015 17:53:12 +0200



with latest UHD and Gnuradio built from sources, gr-ais throws this error when callin ais_rx:


address@hidden:~$ ais_rx

linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.002-143-g8c20712d


-- Operating over USB 3.

-- Initialize CODEC control...

-- Initialize Radio control...

-- Performing register loopback test... pass

-- Performing register loopback test... pass

-- Performing CODEC loopback test... pass

-- Performing CODEC loopback test... pass

-- Asking for clock rate 32.000000 MHz...

-- Actually got clock rate 32.000000 MHz.

-- Performing timer loopback test... pass

-- Performing timer loopback test... pass

-- Setting master clock rate selection to 'automatic'.

-- Tune Request: 162.000000 MHz

--   The RF LO does not support the requested frequency:

--     Requested LO Frequency: 162.000000 MHz

--     RF LO Result: 162.000000 MHz

--   Attempted to use the DSP to reach the requested frequency:

--     Desired DSP Frequency: -0.000000 MHz

--     DSP Result: -0.000000 MHz

--   Successfully tuned to 162.000000 MHz


Tuned to 162.000MHz

Setting gain to 38

Gain is 38

Rate is 250000

Using Volk machine: avx_64_mmx_orc

Traceback (most recent call last):

  File "/usr/local/bin/ais_rx", line 23, in <module>


  File "/usr/local/bin/ais_rx", line 18, in main

    tb = ais.radio.ais_radio(options)

  File "/usr/local/lib/python2.7/dist-packages/ais/radio.py", line 88, in __init__

    self._rx_paths = (ais_rx(161.975e6 - 162.0e6, options.rate, "A"),

  File "/usr/local/lib/python2.7/dist-packages/ais/radio.py", line 63, in __init__

    self.demod = ais.ais_demod(options) #ais_demod takes in complex baseband and spits out 1-bit unpacked bitstream

  File "/usr/local/lib/python2.7/dist-packages/ais/ais_demod.py", line 37, in __init__

    self.preamble_detect = digital.msk_correlate_cc(self.preamble, 0.4, self._samples_per_symbol)

AttributeError: 'module' object has no attribute 'msk_correlate_cc'




Any ideas what is wrong?



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