Commit Graph

535 Commits

Author SHA1 Message Date
Andreas Eversberg ee3fbeb03b Split call control from built-in call console by using MNCC layer 2017-11-05 16:58:31 +01:00
Andreas Eversberg 91b48c09de TV: Fix case where no SDR nor wave file has been selected 2017-10-22 19:23:18 +02:00
Andreas Eversberg 5e14471eb6 B-Netz: Fixup of metering pulse 2017-10-22 19:23:17 +02:00
Andreas Eversberg 2c4d0ee687 SDR: Check if the required bandwidth can be handled by given sample rate 2017-10-22 19:23:09 +02:00
Andreas Eversberg b32e0ab602 Implementation of RX level squelch (for A-Netz and B-Netz)
Use -S <dB> for setting RF level or use -S auto for auto level.

When squelch closes, audio is muted. If squelch is closed for some
seconds (depending on network), call is released. (RF loss condition)

The previous loss detection has been removed
2017-10-22 19:23:08 +02:00
Andreas Eversberg f7a0e4622b Display channel offset with TX and RX channel frequencies on startup 2017-10-22 19:23:06 +02:00
Andreas Eversberg e67c171035 SDR: Minor fixes in error condition handling 2017-10-22 19:23:05 +02:00
Andreas Eversberg f7476bce41 NMT-900: Handle channels >= 1025 correctly 2017-10-22 19:23:04 +02:00
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
Andreas Eversberg c5cf88ce57 Prepare for SDR: Add bandwidth and deviation info to sender instance 2017-02-18 21:00:47 +01:00
Andreas Eversberg 9ff8c3bb25 Rework on audio interface
Sound instance is now called audio instance and uses funcation pointers.
This gives a clean interface to be exchanged with other technologies,
linke SDR.
2017-02-18 21:00:45 +01:00
Andreas Eversberg d54d3ac265 prepare audio handling for multi carrier SDR 2017-01-07 06:28:24 +01:00
Andreas Eversberg 713b1ab118 Rename functions and structure of biquad lowpass filter 2017-01-07 06:28:23 +01:00
Andreas Eversberg d447be5e26 NMT: Rework on FSK process, no more requirement for special sample rates 2017-01-07 06:28:20 +01:00
Andreas Eversberg 2d0bc92cde C-Netz: Make demodulation buffer size dynamic 2017-01-07 06:26:50 +01:00
Andreas Eversberg a37dfe38ab C-Netz: Fixed double free bug 2017-01-07 06:26:49 +01:00
Andreas Eversberg e1cbb1649a Fixed memory leak in PDEBUG(). Thanx to valgrind finding that! 2017-01-05 08:36:52 +01:00
Andreas Eversberg 286c11cab4 B-Netz: Add translation of emergency numbers 110 and 112 2017-01-02 17:38:54 +01:00
Andreas Eversberg b59ce96889 B-Netz: Minor change on start image 2017-01-02 10:19:07 +01:00
Andreas Eversberg 16e1e842b9 A-Netz: Don't allow emphasis, since it is not used with A-Netz 2017-01-02 10:16:49 +01:00
Andreas Eversberg e724823c5b A-Netz: Reset tone detector when going idle
A pending tone must be detected as soon as the cell is idle. This happens
if the phone picks up during release guard time.
2017-01-02 10:13:43 +01:00
Andreas Eversberg d47853201c common code: Update call console only when it changes or after debug line 2016-12-11 14:21:22 +01:00
Andreas Eversberg 3400f555fe Add common function to give hotkey help
* Key to dial and hangup
* Key to display wave form
2016-12-09 16:42:38 +01:00
Andreas Eversberg 7585f9c22d Add function to change dsp state, more debug with channel info 2016-12-09 16:34:33 +01:00
Andreas Eversberg f111c50478 A-Netz / B-Netz: Add function to change state, debug with channel info
Change state uses a function rather than directly setting state
variable.

Some debug commands now use channel number. (for multi-trx setups)
2016-12-06 17:47:58 +01:00
Andreas Eversberg eed826387a work on docs 2016-12-06 17:46:12 +01:00
Andreas Eversberg 27c6e3d860 C-Netz: Add code documentation... 2016-12-01 17:59:08 +01:00
Andreas Eversberg e34d74aa23 C-Netz: Simplifying TX signal clock sync between two channels 2016-11-30 18:09:38 +01:00
Andreas Eversberg 0b43b63d1f Fixed command line option descriptions 2016-11-29 10:59:09 +01:00
Andreas Eversberg d52d0242bf Output enhancements
* no more flicker on wave form display while scrolling
* dialing console gets cleared/overwritten correctly
* fixes on stderr output
2016-11-29 07:49:21 +01:00
Andreas Eversberg 938fb74bae B-Netz: Fixes call procedure according to the standard FTZ 171 R 4 2016-11-27 22:06:47 +01:00
Andreas Eversberg b1c452cf12 Changed command line options
* All lower case options define common options
* All upper case options define network specific options
2016-11-27 22:06:47 +01:00
Andreas Eversberg f911717aa4 C-Netz: Minor coding style changes, no changes to process 2016-11-22 19:09:05 +01:00
Andreas Eversberg 0a83b19a99 common code: Display wave form in color
Show 0-line as blue and curve as green and channel number as white.
2016-11-17 19:38:36 +01:00
Andreas Eversberg 481181fa74 A-Netz: Click removal when changing sequenced paging tones
When tone changes to next tone, a transition of 2ms is performed. The last
tone is faded out and the new tone faded in.
2016-11-14 18:36:50 +01:00
Andreas Eversberg 5f5683e374 NMT: Fixed compiler warning 2016-11-13 06:42:18 +01:00
Andreas Eversberg 34954b50de B-Netz: Rename special start digit for coin box phone type 2016-11-13 06:39:14 +01:00
Andreas Eversberg 2a4abc62b2 Move realtime scheduling and signal handling to common code 2016-11-13 06:37:56 +01:00
Andreas Eversberg 4dacec9ceb A-Netz: Use Operator number 010 when calling from mobile station
Also use no caller ID (NULL). The call control code processes the
caller ID and dialed number correctly.
2016-11-13 06:04:54 +01:00
Andreas Eversberg 52b1ac65f4 A-Netz: Keep phase for each paging tone when played in sequence
If paging tones are played in sequence, only one tone out of four tones
is played at once. The phase of all tones are calculated as if each tone
would have been sent permanently.
2016-11-13 06:00:24 +01:00
Andreas Eversberg 6c1b6119ad common code: Display multiple wave forms for each channel used
Use 'w' key to enable/disable RX wave form display.
2016-10-31 19:16:47 +01:00
Andreas Eversberg ea32ab3fa3 B-Netz: Move 'telegramm' generation to seperate telegramm.c/h files 2016-10-31 18:21:26 +01:00
Andreas Eversberg 63f39e105b AMPS: Fixes for multi transceiver support
- Fix channel assignment
- Voice channel sends test tone when idle
- Changed paging timeout
- Minor fix of SCC field in 2 messages
2016-10-30 09:37:14 +01:00
Andreas Eversberg bb92a1f3b0 AMPS: Add option to be more tollerant to sync detection
Also it detects more false syncs, but this is ignored if decoding fails.
2016-10-29 14:38:49 +02:00
Andreas Eversberg 052fe5d1de AMPS: Improved level detection of bit decoder 2016-10-29 14:38:46 +02:00
Andreas Eversberg 3a3c1c258b AMPS: Show number of correct words (CRC) for each FOCC frame 2016-10-28 17:07:38 +02:00
Andreas Eversberg c1a02a5029 common code: Fix double free bug 2016-10-28 16:55:39 +02:00
Andreas Eversberg c6d3a41b81 C-Netz: Increment error counter only when trying to reach the phone 2016-10-23 11:50:02 +02:00
Andreas Eversberg 1ea95de120 C-Netz: Use emphasis with 200 uS time constant 2016-10-23 08:46:05 +02:00
Andreas Eversberg 8864db8269 C-Netz: Adjusting compandor response level 2016-10-23 08:45:24 +02:00
Andreas Eversberg e763d3c6ed C-Netz: Changing keepalive interval to 2 minutes and retry to 1 minute 2016-10-23 07:32:21 +02:00
Andreas Eversberg 33e0bc5f4e C-Netz: Remove global variables, because they don't speed up anything 2016-10-07 09:14:22 +02:00
Andreas Eversberg 27938d111e Added and fixed extra compiler warnings 2016-10-07 08:55:18 +02:00
Andreas Eversberg 8ef966aa21 C-Netz: Reset FSK decoder when switching channel mode
This prevents corrupt frames, as well as clear pending frames that
were received during the old mode, but may not be received during
the new mode.
2016-10-07 08:00:34 +02:00
Andreas Eversberg eac595bd17 C-Netz: Don't access transaction after destroying it 2016-10-07 08:00:10 +02:00
Andreas Eversberg 0cec2f28be Add check if fromat at PDEBUG() is consistent (like printf)
The bugs it found are fixed too.
2016-10-07 07:52:17 +02:00
Andreas Eversberg b205cfcf03 B-Netz: Work on pilot signal generation
The pilot signal to switch to channel 19 can be:
 * a tone
 * a tone that is turned off (notone)
 * positive amplitude
 * negative amplitude
2016-10-03 14:56:15 +02:00
Andreas Eversberg b07509cf2d AMPS: Correcting channel number range 2016-10-02 09:06:06 +02:00
Andreas Eversberg ad3c88e064 AMPS: Callref is moved completely to transaction object 2016-10-02 09:06:04 +02:00
Andreas Eversberg 17930af920 C-Netz: callref is moved completely to transaction object 2016-10-02 09:06:04 +02:00
Andreas Eversberg 8d7c7f4425 callref: Move callref from 'sender' to individual implementation of a, b, c-netz
Cellular networks use transaction instances, so callref is now member of
transaction object.
2016-10-02 09:06:03 +02:00
Andreas Eversberg 4c1c8eb6fb NMT: Fix on paging retry 2016-08-28 15:29:13 +02:00
Andreas Eversberg 37ca463d98 NMT: Fixed channel coding for channels other than 1..9 2016-08-20 10:21:46 +02:00
Andreas Eversberg 8cecf13b1a NMT: Add transaction handling 2016-08-20 09:57:05 +02:00
Andreas Eversberg 767daf73cd C-Netz: Documentation of the call process in the source code 2016-08-13 15:22:28 +02:00
Andreas Eversberg 7d111546c4 Alsa: Keep 8 samples in input buffer to avoid reading corrupted samples 2016-08-13 15:19:12 +02:00
Andreas Eversberg 541eafe59e Common code: Add call state debugging 2016-08-07 17:23:56 +02:00
Andreas Eversberg 362b1cbb61 Common code: Fix sound card reset 2016-08-07 17:22:24 +02:00
Andreas Eversberg 7f786fc00a C-Netz: Fix missing callref assignment (MT call) 2016-08-07 17:20:06 +02:00
Andreas Eversberg 5182f70671 C-Netz: Documentation of some system informations 2016-08-07 17:17:38 +02:00
Andreas Eversberg e484814c0a C-Netz: Add hack to increase voice deviation for some newer phone 2016-08-03 12:40:56 +02:00
Andreas Eversberg 3a7388ba7f C-Netz: Fixed some debugging output 2016-08-03 12:40:55 +02:00
Andreas Eversberg 2bd7c16baa C-Netz: Add support for extended frequency band. (October 1989) 2016-08-03 12:40:54 +02:00
Andreas Eversberg e69d74ac45 Send test tone towards mobile when no headphone sound device is selected 2016-08-03 12:03:55 +02:00
Andreas Eversberg e4079b8ce8 C-Netz: Fix release cause coding 2016-08-03 12:03:54 +02:00
Andreas Eversberg 53814241b3 AMPS: Note about future callref handling 2016-08-03 12:03:53 +02:00
Andreas Eversberg f15c0dfea3 NMT: Fixing audio level of supervisory signal to match 0.3 KHz deviation 2016-08-03 12:03:52 +02:00
Andreas Eversberg 55229a397c NMT: Fix, stop ringing timer at answer 2016-08-03 12:03:52 +02:00
Andreas Eversberg 28ae3e300f NMT: Fixed multi-transceiver mode and show channel in various logs 2016-08-03 12:03:51 +02:00
Andreas Eversberg 038ce9d1b7 Add info key 'i' to show some states.
Currently showing C-Netz attached subscribers
2016-08-03 12:03:49 +02:00
Andreas Eversberg c9012c7663 C-Netz: Release MT call, if mobile phone does not respond 2016-08-02 09:02:58 +02:00
Andreas Eversberg eb85afa49c C-Netz: Use cosine-square ramp for better signal generation 2016-08-02 07:39:02 +02:00
Andreas Eversberg ce7a98206a C-Netz: Move callref to transaction. Callref on SpK only when its busy.
Only when busy, the channel has callref. This is required for audio
routing. During setup, the callref assigned to transaction and kept
there until release to/from upper layer.
2016-08-01 19:17:13 +02:00
Andreas Eversberg 1a3e536010 AMPS: Fix transaction list corruption 2016-08-01 13:06:03 +02:00
Andreas Eversberg 664f8c7ac0 C-Netz: retry call setup messages up to 3 times 2016-08-01 12:15:12 +02:00
Andreas Eversberg b84a64f872 C-Netz: Autoselect polarity on all transceivers 2016-08-01 12:15:09 +02:00
Andreas Eversberg 77cd21e7c2 C-Netz: Fix transaction list corruption 2016-08-01 12:15:08 +02:00
Andreas Eversberg 0bc5ee553c NMT: Fix SMS cleanup 2016-07-31 18:52:31 +02:00
Andreas Eversberg cc8631d4f9 NMT: Give warning of missing channel type AFTER creating all channels 2016-07-31 18:48:20 +02:00
Andreas Eversberg f729b32745 C-Netz: Fixed multi-transceiver mode and show channel in various logs 2016-07-31 18:48:19 +02:00
Andreas Eversberg eb8a22e2c2 NMT: Fix SMS deliver output message 2016-07-31 14:49:43 +02:00
Andreas Eversberg 0593f7d066 Fix typos 2016-07-24 12:31:09 +02:00
Andreas Eversberg 6a5af9aeac Typos: acknowledgement -> acknowledgment signalling -> signaling 2016-07-24 12:31:08 +02:00
Andreas Eversberg c273bbc5ff Remove console line before printing debugging and on exit 2016-07-24 12:31:08 +02:00
Andreas Eversberg 123979a0f3 NMT: Minor fix at debug output 2016-07-24 12:31:08 +02:00
Andreas Eversberg 8741833948 NMT: Change 'index' of message to 'mt' (message type) 2016-07-24 12:31:08 +02:00
Andreas Eversberg 5807a49f49 Release active call, when disconnect is received from network
If early disconnect is received, the connecion is kept established, so the
announcement can be heared by mobile subscriber.
2016-07-24 12:31:08 +02:00
Andreas Eversberg 4745b29115 NMT: Caller ID support 2016-07-24 12:31:07 +02:00
Andreas Eversberg ba8bf0e9d5 NMT: Fix autoanswer
If phone does not support autoanswer, the MTX proceeds with regular ringing.
2016-07-24 12:31:07 +02:00
Andreas Eversberg efb50532c6 NMT: Rework on frame (message) types 2016-07-24 12:31:07 +02:00
Andreas Eversberg 8906deb5dd B-Netz: Added description for GFS 19 to reduce transmit power 2016-07-24 12:31:07 +02:00