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[Discuss-gnuradio] Ver 3.7 stable?
From: |
Mamoru Yamamoto |
Subject: |
[Discuss-gnuradio] Ver 3.7 stable? |
Date: |
Sun, 08 Jun 2014 01:05:07 +0900 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Dear experts,
<I send this question to both GNU radio and USRP mailing lists. I do not
know which is better place for this discussion.>
(1) Introduction
I am Mamoru Yamamoto from Kyoto Univ.
Some may know that I am doing satellite-beacon experiment
by using USRP1 + GNU Radio. We call the receiver as
GRBR (GNU Radio Beacon Receiver).
http://www.rish.kyoto-u.ac.jp/digitalbeacon/
Sorry this web site is very old. Now I am using
USRP1 + uhd + GNU Radio from python script
Also I am using Ubuntu 12.04LTS.
My application is a very simple dual-channel receiver
recording IQ time-series on two files.
The system is VERY stable and useful. I like it very much.
(2) Current situation
Now I try to move to Ver 3.7.
(I installed the software by "build-gnuradio script".)
Necessary small changes for me were
-- "optfir.low_pass" location change
-- "freq_xlating_fir_filter_ccf" location change & centerfrequency
setting from negative to positive
-- "file_sink" location change
(3) Questions
These changes were done. I now start running the system,
but have problems. I have 2 questions.
Q1: I run the modified code with Ubuntu-32bit 12.04LTS. My code worked
for several times, but after that, it created only "0-byte" files
(=immediate stop), and then no files were created. I checked the uhd
status, and found that "uhd_find_devices" was successful while
"uhd_usrp_probe" failed (see below). I now connect USRP1 to USB3 port.
Is this wrong?
Q2: I also tried to use the same V3.7 code with Ubuntu-64bit 12.04LTS.
But output file from my code is always 0-bytes (=immediate stop).
Please tell me if 64bit OS is useless.
=== Check after the problem (Q1) ===
address@hidden:~/beaconRX$ uhd_find_devices
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.007.001-72-g383061d8
--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
type: usrp1
name:
serial: 2R24X5U1
address@hidden:~/beaconRX$ uhd_usrp_probe
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.007.001-72-g383061d8
-- Opening a USRP1 device...
Error: RuntimeError: usb rx6 submit failed: LIBUSB_ERROR_IO
==============================
Thanks for your help and suggestions.
--
Mamoru Yamamoto / RISH, Kyoto University
address@hidden
Phone +81-774-38-3814, Cell +81-90-5653-7555
- [Discuss-gnuradio] Ver 3.7 stable?,
Mamoru Yamamoto <=