Andreas Eversberg
3218d1a8e0
NMT: Fixed segfault when decoding certain (invalid) messages
2017-10-22 19:23:03 +02:00
Andreas Eversberg
975e34211b
Call control: Minor logging fixes
2017-10-22 19:23:02 +02:00
Andreas Eversberg
ae29f84ed7
Fixed typo
2017-10-12 19:46:32 +02:00
Andreas Eversberg
595fd845e0
NMT: Removed double implementation of caller ID encoding
2017-10-12 19:46:32 +02:00
Andreas Eversberg
ba036de226
Add function to display measurements on screen
...
Use 'm' key to toggle display.
2017-10-12 19:46:30 +02:00
Andreas Eversberg
e84d7a082c
Use braces to make GCC happy
2017-10-02 12:34:38 +02:00
Andreas Eversberg
c645ef9c14
R2000: Use correct debug category
2017-10-02 12:34:35 +02:00
Andreas Eversberg
1a4a08386c
Only dial if call is on-hook or disconnected
2017-10-02 12:34:34 +02:00
Andreas Eversberg
3f2f0fdd8c
C-Netz: Show standard deviation of bit levels instead of jitter
2017-10-02 12:34:33 +02:00
Andreas Eversberg
5ea48588e5
AMPS/TACS: Change audio level range
2017-10-02 12:34:31 +02:00
Andreas Eversberg
3e1da04f14
AMPS: Minor fixes to loopback test
2017-10-02 12:34:27 +02:00
Andreas Eversberg
f469879ed0
SDR: Use filter to remove harmonics caused by downsampling/upsampling
...
This drastically increases the signal-noise-ratio and removes co-channel
interferences. It gains CPU usage, but only on SDR threads, not on the
main thread.
2017-09-24 15:59:24 +02:00
Andreas Eversberg
ff5faa8697
SDR: Improved IQ plot display, increase dynamics of spectrum display
2017-09-24 15:57:56 +02:00
Andreas Eversberg
c1fe179d5d
AMPS: Fix 'use-after-free-bug' after destroying transaction
2017-09-24 14:11:54 +02:00
Andreas Eversberg
b6468b585d
NMT: Minor fixes on frame data
2017-09-22 16:51:47 +02:00
Andreas Eversberg
08dd180ea0
Add echo test feature to check mobile phone's mic + speaker
...
Add '-e' to command line option, but do not select MNCC nor call device
2017-09-21 20:29:30 +02:00
Andreas Eversberg
274cb7992b
SDR: Improvement of spectrum view, peaks are drawn correctly
2017-09-16 10:48:48 +02:00
Andreas Eversberg
5b1956fe49
Move sms and dms code (NMT) to separate lib.a
2017-09-11 20:37:03 +02:00
Andreas Eversberg
b6326aa473
Move commonly used German tones (A/B/C-Netz) to separate lib.a
2017-09-11 20:35:18 +02:00
Andreas Eversberg
7017fd7b3c
Give hint to alter PKG_CONFIG_PATH, if SoapySDR or UHD was not found
2017-09-11 20:31:29 +02:00
Andreas Eversberg
d28a5df024
R2000: Minor fix in channel description
2017-09-03 19:13:21 +02:00
Andreas Eversberg
9205767f94
SDR: Display spectrum graph together with channel numbers and position
2017-09-02 15:41:11 +02:00
Andreas Eversberg
496aff5a79
Add implementation of analog TV signal generator (PAL so far)
...
Quick and dirty Howto:
make && tv/osmotv --sdr-soapy --sdr-tx-gain 60 -r 15000000 -c 21 tx-fubk --sdr-tune-args "OFFSET=-3000000"
2017-09-02 07:34:50 +02:00
Andreas Eversberg
a52c89800c
SDR: Split SDR config from main_mobile.c to sdr_config.c
2017-09-02 07:34:48 +02:00
Andreas Eversberg
94ed39f5e2
JTACS: Implementation of the Japanese variant of TACS
2017-09-01 18:42:54 +02:00
Andreas Eversberg
489ab9506c
TACS: Fix power levels
2017-09-01 18:42:53 +02:00
Andreas Eversberg
05c516ca16
SDR: Fixed stack overflow by allocating memory instead of local buffers
2017-09-01 18:42:52 +02:00
Andreas Eversberg
eb0c123433
C-Netz: Fixed overflow bug
2017-09-01 18:42:51 +02:00
Andreas Eversberg
dfdad21e3f
C-Netz: Work on system informations, metering and call queues
...
- Make system informations configurable
- Simulate call mertering
- Support for call queues on busy voice channels
2017-09-01 18:42:51 +02:00
Andreas Eversberg
3bfba37fff
Corrected print messages in wave file processing.
2017-09-01 18:42:50 +02:00
Andreas Eversberg
cff7622f5c
Move mobile phone specific code from libcommon.a to libmobile.a
2017-09-01 18:42:49 +02:00
Andreas Eversberg
3c0bcce97b
Move German tones from common code to individual implementation
2017-09-01 18:42:48 +02:00
Andreas Eversberg
d2472cfca6
Emphasis: Add filter to prevent emphasis above 4000 Hz
...
Remove obsolete filter from fsk.c.
2017-09-01 18:42:47 +02:00
Andreas Eversberg
743d147d16
SDR: Turn TX power off if requested by network
...
The power level is ramped smoothly within 1 ms up or down.
R2000, AMPS and C-Netz turn off power when voice channel is not i use.
C-Netz turns off power between OgK timeslots.
2017-09-01 18:42:46 +02:00
Andreas Eversberg
1c2e9180a2
Radiocom 2000: Use high-pass filter to remove supervisory signal
2017-09-01 18:42:45 +02:00
Andreas Eversberg
ae2b0cce0c
B-Netz: Be more tollerant with quality of continuous tones
2017-09-01 18:42:44 +02:00
Andreas Eversberg
064d95f37e
Fixup: SDR: Show IQ data with three colors
...
Use correct threshold values to display colors
2017-09-01 18:42:42 +02:00
Andreas Eversberg
ea7cbb8675
SDR: Add option to enable TX timestamps on UHD devices (disabled by default)
2017-08-16 18:51:47 +02:00
Andreas Eversberg
8489914bf0
SDR: Add time consumption debug code
2017-08-16 18:51:46 +02:00
Andreas Eversberg
42a87c1c2f
SDR: Name SDR TX and RX threads
2017-08-16 18:51:46 +02:00
Andreas Eversberg
ee61c4362b
B-Netz: Use standard deviation to determine if an FSK frame is valid or not
2017-08-16 18:51:45 +02:00
Andreas Eversberg
41bd9999b1
B-Netz: Add metering pulse support (Gebuehrenimpuls)
2017-08-16 18:51:44 +02:00
Andreas Eversberg
275be50225
R2000: Fixes
2017-08-16 18:51:43 +02:00
Andreas Eversberg
3afcac8342
SDR: Add option to swap RX and TX frequencies (for testing)
2017-08-10 17:42:54 +02:00
Andreas Eversberg
f2d439c1ae
UHD: Remove buggy sample rate check
2017-08-10 15:59:29 +02:00
Andreas Eversberg
999b6a2b4d
UHD: Make frequency settings more tollerant (+-100 Hz are accepted)
2017-08-09 17:27:14 +02:00
Andreas Eversberg
534411d660
New common FSK implementation, replaces all individual implementations
2017-08-09 17:27:13 +02:00
Andreas Eversberg
ffd3b848e1
Implementation of "Radiocom 2000", the analog French mobile network
2017-08-09 17:27:12 +02:00
Andreas Eversberg
8ce3ff455d
Add incoming answer to call control, also allow to send recall tone
2017-08-09 17:27:08 +02:00
Andreas Eversberg
d20b41a457
Fixed command line option for call audio device (headset)
...
--call-device option now works.
Thanx to Fabricio pointing to this bug.
2017-08-08 12:54:45 +02:00
Andreas Eversberg
7c9ce960d7
Fixes of checking digits
2017-08-08 12:54:21 +02:00
Andreas Eversberg
5090f5a18d
SDR: Show IQ data with three colors to detect input overdrive
...
green: up to 0.45
yellow: between 0.45 and 0.9
red: above 0.9
2017-08-08 12:54:03 +02:00
Andreas Eversberg
0cbd9657d2
Move Hagelbarger error correction code from NMT to common code
...
It will be used by Radiocom 2000 also.
Some minor fixes and improvements apply.
2017-08-08 12:53:48 +02:00
Andreas Eversberg
6c64025717
Move FFSK modem from NMT to common code, so it can be used by other networks
2017-08-08 12:53:34 +02:00
Andreas Eversberg
92ce6d4a42
SDR: Using threads for read and write when doing resampling
2017-08-08 12:53:02 +02:00
Andreas Eversberg
3274812eab
NMT-900 System implementation
...
NMT can now be run as 450 or 900 Network.
2017-08-08 12:52:45 +02:00
Andreas Eversberg
0c9de251be
NMT: Implement Hagelbarger Code
...
This will correct burst errors of received messages. If the message
is too corrupted, it will be ignored, because some element may not
match then. The digits and line signals are checked for consistency,
since they are repeated serveral times in a message.
2017-08-08 12:52:29 +02:00
Andreas Eversberg
cd9cb9a107
Minor fix for NMT debug output
2017-07-15 12:45:20 +02:00
Andreas Eversberg
a088536533
Minor fix for IQ data display
2017-07-15 12:45:20 +02:00
Andreas Eversberg
fda224c27f
Fixing and improving SDR support (SoapySDR and UHD)
...
- Soapy SDR now works.
- Channels can be selected.
- Antennas can be listed and selected.
- Device args, tune args, stream args can be specified.
2017-07-15 12:45:19 +02:00
Andreas Eversberg
538b4a42ec
Add wave file playback to replace TX audio
2017-07-15 07:38:16 +02:00
Andreas Eversberg
aa20d4e50e
Cleanup common/Makefile.am
2017-07-15 07:38:15 +02:00
Andreas Eversberg
557d19de66
NMT: Show trafic areas in hex and allow to select unsupported areas
2017-07-15 07:38:14 +02:00
Andreas Eversberg
3774519631
NMT: Fixed "use after free" bug
2017-07-15 07:38:13 +02:00
Andreas Eversberg
7af886c600
NMT: Fixed NMT digit decoding
2017-07-15 07:38:13 +02:00
Andreas Eversberg
085ceb9173
Minor fixes to compandor
2017-07-15 07:38:12 +02:00
Andreas Eversberg
3ce50f8ab3
AMPS: Fixes in message display and function names
2017-07-15 07:38:10 +02:00
Andreas Eversberg
3788b3e8a5
TACS support (variations added to AMPS code)
...
These are:
- Bandwidth only 25 KHz, so lower deviations
- Data rate only 8000 KHz
- SID is called AID (Area ID)
- MIN1 coding is different
2017-07-15 07:38:09 +02:00
Andreas Eversberg
d52f4cd29d
NMT: Mark Benelux and Czech/Slovak networks as tested
...
I have tested the network with B/NL/L and CZ/SK phones, and they work!
2017-06-15 18:28:26 +02:00
Andreas Eversberg
1aebedc66a
NMT: Fixed line signal description
2017-06-11 09:01:21 +02:00
Andreas Eversberg
7a9762e28e
NMT: Disable Supervisory signal during DMS (SMS) transfer and use Timeout
...
There is no Supervisory signal during DMS transfer, so there must be
no timeout for Supervisory signal. Instead, the SMS layer will timeout
after some seconds without receiving data.
2017-06-11 08:13:52 +02:00
Andreas Eversberg
3e86ef95c4
B-Netz: Minor printf fix
2017-06-10 17:49:59 +02:00
Andreas Eversberg
19afb792b5
NMT: Fix and adjustements to supervisory signal detection
2017-06-10 17:11:47 +02:00
Andreas Eversberg
50b2021d21
NMT 450: Support for other European counties, like Belgium, Czech, Slovakia
2017-06-10 13:08:51 +02:00
Andreas Eversberg
dbdedfe1a1
AMPS: Fixed selecting right CRC values for FOCC words
2017-06-10 13:08:26 +02:00
Andreas Eversberg
d23672354f
Add option to set MNCC socket name (to run multiple base stations)
2017-06-10 13:08:26 +02:00
Andreas Eversberg
329463bb8c
SDR: Add option to give channel number
...
Using SoapySDR server allows to run different networks on multi channel
SDR devices.
2017-06-10 13:08:25 +02:00
Andreas Eversberg
aef4cf0997
Make spectrum display nicer by plotting continuous lines between samples
2017-06-10 13:08:24 +02:00
Andreas Eversberg
e0534db15c
Make spectrum display a little nicer by using '|' instead of ':'
2017-06-10 13:08:23 +02:00
Andreas Eversberg
e653475ff7
NMT: Allow NULL (B'0000') to be used as country selector in traffic area
2017-06-10 13:08:23 +02:00
Andreas Eversberg
57d4d1739e
AMPS/C-Netz: Correctly release pending transaction when creating a new one
...
If transactions is created, look on all channels for pending transaction
with same subscriber.
1. Remove that transaction.
2. Make channel return to IDLE.
3. Release call, if callref exists.
2017-06-10 13:08:22 +02:00
Andreas Eversberg
6adfcf7466
Status display
...
Alows to show status of current channels and users
2017-06-10 13:08:21 +02:00
Andreas Eversberg
bb64c6b3ba
AMPS: Add DTX support
...
When DTX is enabled (-S dtx=2 or 3), a missing SAT tone causes the receiver
to mute audio and insert a low level of comfort noise.
Also the missing SAT tone will not cause the connection to be terminated.
2017-06-10 13:08:19 +02:00
Andreas Eversberg
2c1ab89723
Notify about usage of channels that are next to each other
...
It is required to have at least one free channel between channels, to
avoid interferences.
This is only a warning, it will not reject channels next to each other.
2017-05-24 14:01:25 +02:00
Andreas Eversberg
fc3b3e07be
Finetuning LOSS (noise) detection
...
The algorithm is still bad, but works in most cases
2017-05-24 14:00:08 +02:00
Andreas Eversberg
56024b384b
AMPS: Serveral minor fixes
2017-05-23 18:11:10 +02:00
Andreas Eversberg
76a3484c5c
C-Netz: Make demodulation algorithm (slope or leve) slectable via option
...
By default (auto), the algorithm is selected, depending on sound card
or SDR usage. For testing and debugging purpose, the algorithm can be
forced.
2017-05-19 19:11:59 +02:00
Andreas Eversberg
c086e66b7c
minor cleanups
2017-05-17 20:14:37 +02:00
Andreas Eversberg
0557bbbc43
SDR: Checking given parameters with a tollerance of up to 0.001
...
Rounding errors may cause given parameters to be changed a little.
When comparing the set-values with the get-value, a small amount
of tollerance must be allowed.
Thanx to Syvain, pointing to this bug!
2017-05-17 20:06:47 +02:00
Andreas Eversberg
683078a7a0
SDR: Spectrum display will not scale FFT result
...
Instead the greatest possible width that will fit into the window will
be used. This width is 2 to the power of N.
2017-05-17 20:06:46 +02:00
Andreas Eversberg
ef7ff26793
C-Netz: SDR now uses zero-crossing to detect level changes.
...
This does not work with analog radio, but with SDR it works.
The quality should be better and the process is faster.
2017-05-17 20:06:46 +02:00
Andreas Eversberg
9d87b5bf0f
C-Netz: Improved transmission of speech
...
The speech is now correctly ramped up and down during pause bits.
2017-05-17 20:06:44 +02:00
Andreas Eversberg
12dcc6c40f
Minor fixes on AMPS messages
...
- Flipping polarity is now performed after B/I has been applied
- Correcting sysinfo
2017-05-17 20:06:43 +02:00
Andreas Eversberg
4d10ee7c82
No "sdr" audio device option required anymore (when using SDR)
2017-05-17 20:06:42 +02:00
Andreas Eversberg
ca10048e5c
Rename filter -> iir_filter (file name and instance name)
...
This is useful when using fir_filter in the future.
2017-05-15 21:46:32 +02:00
Andreas Eversberg
d03443c4f1
SDR: Added SoapySDR's compiler flags to common/Makefile
2017-05-15 21:46:30 +02:00
Andreas Eversberg
c04d046210
SDR: Fixed SoapySDR's arguments parsing
2017-05-15 21:46:30 +02:00
Andreas Eversberg
fbdb9ece01
SDR: Allow direct IQ TX and RX instead of fm modulating a list of channels
...
This is performed by reading and writing IQ data to "sample" pointer with
channel number set to 0.
2017-05-15 21:46:29 +02:00
Andreas Eversberg
65694f3b80
SDR: disable TX or RX by setting TX or RX frequency to 0
...
This way it is possible to use SDR simplex
2017-05-15 21:46:29 +02:00
Andreas Eversberg
6e0e0c9ce8
fixup Rework on audio buffer management
2017-05-15 21:46:28 +02:00
Andreas Eversberg
9dda9e1efc
SDR: Add option to set IF bandwidth. If not defined, sampling rate is used.
2017-05-15 21:46:27 +02:00
Andreas Eversberg
1445ca2fac
SDR: Add option to send (previously recorded) IQ data instead of TX data
2017-05-15 21:46:26 +02:00
Andreas Eversberg
369bda87a9
C-Netz: Improved decoder debugging
...
FM decoder debug output is now written to text files for better
debugging of process.
2017-05-15 21:46:25 +02:00
Andreas Eversberg
8e0d7d2513
samplerate.c: Allow transcoding to lower sample rate other than 8000 Hz
2017-03-04 16:52:20 +01:00
Andreas Eversberg
3fc4fc54be
main_common: Move init and cleanup function to main function
2017-03-04 07:12:12 +01:00
Andreas Eversberg
4201717f36
Rework on audio buffer management
...
Use function to get samples to be sent to fill audio buffers to a
level. This replaces the function that only shows how much data
is in the buffer.
This way the function itself can control how much data will be
sent.
2017-03-04 06:35:38 +01:00
Andreas Eversberg
2e1999b1ee
Start streaming of sound/SDR just before main loop
...
This prevents buffer overflow during init/creation processes
2017-02-25 07:09:53 +01:00
Andreas Eversberg
04fd1ddcea
Use thread to record and playback wave files without blocking
2017-02-25 06:29:09 +01:00
Andreas Eversberg
f689244f98
C-Netz: OgK must be on first channel, so sync works correctly
2017-02-18 21:02:56 +01:00
Andreas Eversberg
438ce08add
SoapySDR support
...
There is no time stamp handling. It is just TX'ing in advance and
synchronous to received RX rate.
2017-02-18 21:02:55 +01:00
Andreas Eversberg
17b6124122
C-Netz: Remove useless -V option
2017-02-18 21:02:54 +01:00
Andreas Eversberg
58ebc15292
Add test to measure performance of FM modulation and filtering
2017-02-18 21:02:53 +01:00
Andreas Eversberg
4de1e0188d
C-Netz: Add low pass filter to eliminate high frequency noise
...
This improves the FSK decoding quite allot, especially with SDR.
2017-02-18 21:02:52 +01:00
Andreas Eversberg
290b365d67
SDR: Move FM modulation algorithms to a seperate file
2017-02-18 21:02:51 +01:00
Andreas Eversberg
4c0f8e7e95
Rework of sample rate conversion by using linear interpolation
2017-02-18 21:02:51 +01:00
Andreas Eversberg
47f74b38ce
SDR transmits with full amplitude
2017-02-18 21:02:50 +01:00
Andreas Eversberg
6a3cfd608e
Add ascii-art spectrum analyzer for SDR support
2017-02-18 21:02:49 +01:00
Andreas Eversberg
3fb2ade352
C-Netz: Fix release of call process when no dialing was received from phone
2017-02-18 21:02:48 +01:00
Andreas Eversberg
0611f62b52
Show channel number and basic info when channel was created
2017-02-18 21:02:47 +01:00
Andreas Eversberg
5f1d7bc970
C-Netz: Improve clock speed measurements.
...
Sound card's clock measurements only requires a few minutes to get sub-ppm
accuracy results.
2017-02-18 21:02:46 +01:00
Andreas Eversberg
54ed5d5f82
AMPS: Fixed setting of signal polarity when using SDR
2017-02-18 21:01:19 +01:00
Andreas Eversberg
faa3dfb7d4
C-Netz: Make average to clock measurements for a quicker result
2017-02-18 21:01:19 +01:00
Andreas Eversberg
5026e161aa
Open audio device for call (headset) after everything is prepared
...
It is not allowed to stall after trigger reading of audio device.
2017-02-18 21:01:18 +01:00
Andreas Eversberg
8cb0187133
C-Netz: Remove the obviously useless noise function for unused timeslots
2017-02-18 21:01:17 +01:00
Andreas Eversberg
f5e9a97c31
--rx-gain option works now only with sound card
2017-02-18 21:01:16 +01:00
Andreas Eversberg
2b4f5bb228
Minor fix in help output
2017-02-18 21:01:15 +01:00
Andreas Eversberg
f72c53757d
B-Netz, NMT: Improved check for minimum required sample rate
2017-02-18 21:01:15 +01:00
Andreas Eversberg
7e45f556ce
Correcting all levels and move all remaining integer samples to sample_t
...
The leves are based on the standards of each mobile network. They
are adjusted to the specified frequency deviation now.
2017-02-18 21:01:13 +01:00
Andreas Eversberg
bd7ccc5fa0
Add global DC-Filter and remove all individual DC-Filters
2017-02-18 21:01:12 +01:00
Andreas Eversberg
71e556e7ff
Work on emphasis filter: Neutral @ 1000 Hz; Use filter before de-emphasis
2017-02-18 21:01:11 +01:00
Andreas Eversberg
b3fd53b165
Test filter uses a dB graph to show the response graphically
2017-02-18 21:01:10 +01:00
Andreas Eversberg
7ea3bc188d
Move samples of int16_t format to sample_t, that is of type double
...
This prepares the correction of all levels
2017-02-18 21:01:08 +01:00
Andreas Eversberg
538a959128
Indexing tables by casting index to unsigned integer only
2017-02-18 21:01:06 +01:00
Andreas Eversberg
23a42aeb2c
Fixed calculation of elapsed UHD RX time stamp
...
Now rates above 1000 RX frames per second works. The bug hit when there
were more than one frame received during one function call. This happens
if the frame rate is above the main loop rate of 1000 frames per second.
(default)
2017-02-18 21:01:05 +01:00
Andreas Eversberg
ac0da3f76e
Filter improvement: LP and HP filters, added test function
...
The -3 dB level at cut-off frequency is now maintained for multiple
iterations.
2017-02-18 21:01:04 +01:00
Andreas Eversberg
799b96c801
Fixed sleep interval in main loop
...
The elapsed time is calculated, so that it is removed from the sleep
time. This way the loop interval matches the given target.
2017-02-18 21:01:03 +01:00
Andreas Eversberg
a7e47f83d7
Fixed paging channel switching of B-Netz
...
Now the calling channel is switched correctly.
A global parameter is used to select how paging is performed.
2017-02-18 21:01:03 +01:00
Andreas Eversberg
21c5c3195d
Plot IQ data as red points on display, if overdriven (vector length >= 1.0)
2017-02-18 21:01:01 +01:00
Andreas Eversberg
c0e30d35d6
Use individual sample rate and setting for call device (headset)
2017-02-18 21:01:00 +01:00
Andreas Eversberg
19b396ab4d
Wave recording and playback now uses multi channels
2017-02-18 21:00:59 +01:00
Andreas Eversberg
2d8d7e62c1
Use global init/cleanup function
2017-02-18 21:00:58 +01:00
Andreas Eversberg
bc028cd4d3
NMT: Make supervisory signal default, also allow setting per channel.
2017-02-18 21:00:57 +01:00
Andreas Eversberg
272ebeb0ae
SDR: Minor fixes
2017-02-18 21:00:56 +01:00
Andreas Eversberg
a5fd375237
Fixed typos
2017-02-18 21:00:55 +01:00
Andreas Eversberg
bf0abd627d
A-Netz: Option to set gain of paging tones
2017-02-18 21:00:54 +01:00
Andreas Eversberg
d28467c125
SDR: Display IQ data as a plot using 'q' key
2017-02-18 21:00:53 +01:00
Andreas Eversberg
fee4846c3f
SDR forces default settings: emphasis and FSK polarity
2017-02-18 21:00:52 +01:00
Andreas Eversberg
8b9277615d
Neu structure for the paging process (B-Netz)
...
Paging tones are not created within sound_alsa.c
The audio API is now responsible to switch to paging channel.
In case of SDR, the sdr.c will switch frequency offset.
2017-02-18 21:00:50 +01:00
Andreas Eversberg
57993e3e48
Support for UHD SDR interface
2017-02-18 21:00:49 +01:00
Andreas Eversberg
b30b61282c
Generic SDR support
2017-02-18 21:00:48 +01:00