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Change-Id: I64862f60eecadd60580a117ab865ea597eaad30b
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Correcting and making sense of some magic constants
relating to synchronization. Some magic constants
of unknown origin still stay.
Change-Id: I5a45ce1c8bceded70d34302a5b136da5f92fd902
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Change-Id: I387e462a889f7e3572d8e53a241c63aafed70912
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If tick_rate is fractional rate_i variable is 0 and shouldn't be used in
division.
Change-Id: I660922683d837160e0546a0f339560d7d0965379
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Information about clock error is needed in order to transform frame number
to hardware time - which is not ideal (i.e. different than BTS time).
Change-Id: Icd77b88da0490d6c9565bf3df0342574b91aae6e
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Gr-gsm's receiver needs a stream of samples with sampling frequency that
is integer multiply of gsm symbol rate. Many hardware receivers don't
support such rates, and even if they do there might be error in their
time source. Sample rate is adapted and corrected with use of a resampler.
Moreover corrections are applied in the runtime so resampler's resample
rate is changed dynamically. Those changes need to be tracked in order
to be able to track time of the hardware after resampling.
Hardware time tracking is needed to enable triggering of events in the
hardware (i.e. frequency changes, burst transmissions).
Changes were made in time_sample_ref and receiver in order to enable
SDR hardware time tracking.
Change-Id: Ide8149a5fc6c22700d3a4542115306a4dc682ff2
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Change-Id: I730629a58376fb550799a566faca031fcf1cd00d
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The old freq_hopper -controlling USRP frequency with use of tags -
was renamed to freq_hopper_tag. The new one - freq_hopper_msg - that
uses uhd_source or uhd_sink control message input was created.
Change-Id: Ic867446314ef2ee6903cef85d48c280981132dae
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Change-Id: Iaffbe8fc28be9a70fbf8fa1689687fbd171f6b0e
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least significant number
Change-Id: I21d79168616d98cd2de3c6a5f597d683b34880ef
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When gr-osmosdr is compiled with SoapySDR support and SoapyAudio is
installed the audio device is picked as a first choice when detecting
devices but grgsm tools are not able to work with audio devices. So in
such cases the user has to always specify the correct SDR device in the
args parameter which is a bit inconvenient.
When args is not specified call osmosdr.device_find to get all devices
and filter out unspported ones like SoapyAudio devices. When args is
specifed just try to create osmosdr.source with whatever value has been
specified.
Add -l and --list-devices command line option that prints information
about all detected devices.
Example commands:
grgsm_capture --list-devices
grgsm_capture --list-devices --args=nofake
grgsm_capture --args=uhd,type=b210 -a 111 capture.cfile
grgsm_livemon --args=rtl
grgsm_livemon --args=uhd,type=b210
Change-Id: Ib84081041ca6c2bc18b9da0c32bac9d3ecef65ca
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We need a space between numchan=1 and the rest of the device arguments
otherwise when --args is specified it fails with RuntimeError: bad lexical cast
$ grgsm_capture --args=soapy
Traceback (most recent call last):
File "/usr/local/bin/grgsm_capture", line 179, in <module>
device_args=options.device_args)
File "/usr/local/bin/grgsm_capture", line 57, in __init__
osmosdr.source(args="numchan=1" + device_args )
File "/usr/local/lib64/python2.7/site-packages/osmosdr/osmosdr_swig.py", line 1170, in make
return _osmosdr_swig.source_make(*args, **kwargs)
RuntimeError: bad lexical cast: source type value could not be interpreted as target
Change-Id: I2d1bcee835b695c91a5c44ec78a40b2d969f611c
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- Change "6,90 kbit/s" to "5.9 kbit/s"
A typo reported in github ptrkrysik/gr-gsm#456
- Comment out the "Error! frame_nr:" message as it turns out to confuse
users more then it actually helps debugging.
- When voice-boundary detection is enabled write the name of decoded
control channel messages
Change-Id: I697ef944f30c4cabb62c888317dd3a7f8dcd5611
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Change-Id: Ia70ab45a8beb81512a9f83e316ad2d2bc385ef19
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- The second argument of tch_h_decoder constructor is a string that
accepts the value of MultiRate configuration element and not an enum
like the tch_f_decoder decoder.
- Make the demapper's burst sink required.
- Make all parameters visible.
- Rename the TCH/H Channel parameter to Sub-channel number.
- Add the qa_tch_h_decoder test in the CMakeLists.txt
- Fix several typos
Change-Id: I92d4f49955c634df7d76f17cfb58d7106846c1bd
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grmgs_capture tried to do too many things for a simple recorder.
It was simplified by removing the receiver and ability to
save data to bursts files.
All other stuff that is not necessary for recording signal to disk was
also removed:
-setters/getters,
-storing of parameters that never will be changed.
The 'fc' parameter name was changed to 'freq' to follow GNU Radio
guidelines.
The 'shiftoff' parameter was removed.
'bb_gain' and 'if_gain' parameters were added.
Variables specific to some of SDR's like:
-gains at different stages,
-bandwidth (not all devices can set it),
-antennas (some devices have just one, some not),
were moved to separate options group.
What is left to be exposed is:
-dc_offset_mode,
-iq_balance_mode,
-gain_mode.
Change-Id: I092a43eaddb09a99c6cc05fde13f0ae94d9e0251
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In the GSM input adaptor and GSM Receiver blocks the osr was hardcoded
to 4 and cannot be changed using the command line parameter.
Change-Id: I4e85b898f05db636f18fdea6e5fee4fed6e0382a
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- Include grgsm/endian.h in tch_h_decoder_impl.cc
- Revert 0ed39fbf9340bdfb254bec5e3b94d9f00cf9d151 as linking with
boost_thread is needed
Fixes GH-444
Change-Id: I00884962295082cff3eb64fa21e9f73437be0001
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Change-Id: Ie983b10d1814906b6e659213f865e58d0f5c08e4
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Change-Id: Ic11f878c176bad16b057f25725ab0cfecc01782f
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Change-Id: I6c1ba8546caec122cd1ea0ed87656f691abec068
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Change-Id: I1644a3f6b8da0d5f2a1a133058269e5383948fda
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Change-Id: If4b00f6332461d3c37cde5a1f724906ca3d3a30f
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Change-Id: I065bf664f775099c90c123c9ff75f262a73bf1be
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Change-Id: I100ce2ab8effc00e164e13253894445bdc816f06
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Change-Id: I6dc88edbb69a68746cc8e01206dc86f7ea2fa80f
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Change-Id: I1e7f74c56388a431794a0b32b8a9537c360f5d33
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Change-Id: I513da0f45c6a608d15fbd0e8eafe14d6af8833d7
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Change-Id: I9f251958ec90141d144fdb027aff20182131a1d1
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Change-Id: Ie96eb9735ecaa3329135c7be976ffd277a2f64f4
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Change-Id: I1bcc9c8a2d37d156bbec93be3838200f6c4a80c2
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Change-Id: Ica9c56d01191dda38e63b51caba2ec8c63b671c9
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Change-Id: Ifa616644a858f493b9f8706663f9e7fed717f3d0
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The old name was quite long, resulting into cumbersome imports:
from change_sign_of_dict_elements import change_sign_of_dict_elements
let's use a shorter variant:
from dict_toggle_sign import dict_toggle_sign
Change-Id: Ie75e1d6e5e74c7c1cf34154633c1472e4b85dbb6
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Change-Id: I379b321866bd892a52b0c272ed50c670da380a17
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Decode Alerting and Progress messages and if the in-band information
flag is set start decoding the voice
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Add new TCHH channel mode
Add two new optional arguments
-m CHAN_MODE, --mode=CHAN_MODE
Channel mode. Valid options are 'BCCH' (Non-combined
C0), 'BCCH_SDCCH4'(Combined C0), 'SDCCH8' (Stand-alone
control channel) 'TCHF' (Traffic Channel, Full rate),
'TCHH' (Traffic Channel, Half rate)
--sub-channel=TCH_H_CHANNEL
TCH/H sub-channel. [default=0]
--multi-rate=MULTI_RATE
The MultiRrate configuration element from the
Assigment Command message. Example: 28111a40. See 3GPP
TS 44.018 - 10.5.2.21aa MultiRate configuration
Example:
grgsm_decode -m TCHH --sub-channel 0 --multi-rate 2811 -o voice.amr ...
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MacOS X does not have endian.h and the build will fail unless
grgsm/endian.h is used.
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Change-Id: I2a6e3f41b6fe79b92d85ff98bc2cd9afd9bdc568
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Change-Id: I5c334e16d6b28a5e32cd62a177ad56bfc8e748ee
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Change-Id: I612d8ae7d3ff99fee809e10d95919989bfbe0f59
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Frequency is always in Hz so there is no need to add that
information in the variable name.
Change-Id: I509771c3fe072069a680f66b0763ae6825f6d529
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A gitreview file is required to use git review.
More information about git review
https://docs.openstack.org/infra/git-review/
https://www.mediawiki.org/wiki/Gerrit/git-review
Change-Id: Ie07446ba1a13e53c87bcc9b23e3b775803d158f4
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Change-Id: Ie6e7ea4337c9e23a8e4445136a3adffc96b19942
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This change is done to make keeping track of sample counter
at the input of the resampler easier from blocks connected
to its output. Each tag leaving the resampler has accompanying
"original_offset" tag with its offset before sample rate change.
Change-Id: Iea8ca4a092029f774406dced8a97a17810f21f62
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