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586 Commits

Author SHA1 Message Date
Andreas Eversberg 8c6f78fd63 B-Netz: Make debug text more plausible 2019-05-30 18:17:55 +02:00
Andreas Eversberg b9cc33c6ec OsmoTV: Added more test patterns for TV repair 
- improved FUBK
- red screen for DY adjustment
- crosses and dots for convergence adjustment
- EBU color bars
- natural color image
 2019-05-12 21:08:09 +02:00
Andreas Eversberg e4314749fd Fixup for fast mathm 
Because users of libfm do always call fm_init and fm_exit, it must be
included in every build.
 2019-03-23 07:57:28 +01:00
Andreas Eversberg e4fcc080df NMT: Fixed traffic area (Y1Y2) digit conversion 2019-03-09 09:51:09 +01:00
Andreas Eversberg 1321f66456 C-Netz: Add option to control voice deviation 2019-01-02 15:58:34 +01:00
Andreas Eversberg f1292a985b SDR: Move channel away from center frequency, to avoid bad RX 2019-01-02 15:57:54 +01:00
Andreas Eversberg 5311f44daa minor fixes of some prints; fix NMT message counter bug 2018-12-23 19:53:28 +01:00
Andreas Eversberg e16a2dd548 B-Netz: Add base stations of the Netherlands 2018-12-23 19:26:59 +01:00
Andreas Eversberg 32025915d5 Make run faster on ARM CPUs using fast math approximation 
Use --fast-math to use sine/cosine tables and approximate atan2.
 2018-11-10 15:18:28 +01:00
Andreas Eversberg e8429166c3 Radio: Minor fixes 2018-11-10 15:18:28 +01:00
Andreas Eversberg 73757ba083 NMT: Fix test of SMS code for different time zones 2018-11-10 15:18:28 +01:00
Andreas Eversberg 2cff22ef54 Added little INSTALL document and fixed some compiler issues 2018-11-02 09:28:48 +01:00
Andreas Eversberg e5c4e1f638 NMT: Fixed support for NMT-F (France; SFR) 
Works now with Nokia Talkman 520 TMF-1FR
 2018-10-30 20:04:21 +01:00
Andreas Eversberg 9444fcdb91 NMT: Fix channel encoding for interleaved 2018-10-30 20:01:59 +01:00
Andreas Eversberg e9a7f610ee Compandor: Remove unused option for unaffected level 2018-10-14 13:07:25 +02:00
Andreas Eversberg 56d8df5351 Rework of displaying supervisory info: NMT and AMPS 
Using lower rate to show debug info of supervisory signal.

Display supervisory info for NMT and AMPS at measurement display screen.
 2018-08-31 20:05:38 +02:00
Andreas Eversberg eac19ddab1 C-Netz: Allow SDR using C-Netz without calibration options 
Crystals on SDRs are accurate enough for C-Netz (< 1ppm).
 2018-08-26 08:47:56 +02:00
Andreas Eversberg 279dd25b15 SDR: Add presets for LimeSDR-Mini 2018-08-25 10:25:25 +02:00
Andreas Eversberg b2210cd698 Radio: Abort, if no RX sink is specified 2018-08-25 10:22:55 +02:00
Andreas Eversberg 881d4a9f72 SDR: Fix level range of IQ date; must not exceed range of -1 .. 1 
LimeSDR mini (and maybe others) do not want IQ data to become a value below
-1 or above 1. This happens slightly when applying the IIR filter after
upsampling. To prevent this, we scale down the IQ level a little bit.

To test the problem:
- set the scale level to 1.0, so it does not take effect
- use LimeSDR mini
- use upsampling (sample rate differs SDR sample rate)
- run loopback mode 2 (-l 2)
- IIR filter must be initialized with 2 or more iterations to take effect
- check linear IQ graph; it will then plot dots inside the circle
 2018-08-25 08:13:16 +02:00
Andreas Eversberg 0b22b0305a C-Netz: Correcting some information elements 2018-07-01 09:36:50 +02:00
Andreas Eversberg 40aec4f14c C-Netz: Swtitch speech scrambler only after receiving 3 consecutive frames with different scrambler mode 2018-07-01 09:18:07 +02:00
Andreas Eversberg 7c4cfd5567 TV: Minor code cleanup 2018-06-24 11:40:53 +02:00
Andreas Eversberg 83449726f8 R2000: Fix recall option 2018-06-24 11:39:31 +02:00
Andreas Eversberg b7046a5283 SDR: Add clock source selection, untested yet 2018-06-24 11:36:56 +02:00
Andreas Eversberg f4988297a6 B-Netz: Refactoring tone and quality detection 2018-06-05 07:09:51 +02:00
Andreas Eversberg 3b58408691 Fixed -t (--tone) option 2018-05-27 06:04:09 +02:00
Andreas Eversberg be309e1c83 C-Netz: Fixed display of states (state display function) 2018-05-21 19:43:38 +02:00
Andreas Eversberg 0b504dbeb3 SoapySDR: Flip initialization of RX and TX, so LimeSDR works with frequencies below 30 MHz 2018-05-21 19:39:09 +02:00
Andreas Eversberg c774180082 Osmoradio fixes: Use real time scheduling and always transmit empty buffer 2018-05-21 19:39:09 +02:00
Andreas Eversberg ce4a540745 Add real-time scheduling to osmotv and make it default for all base stations 
This is required to drastically reduce the latency of the thread execution.
 2018-05-21 19:39:09 +02:00
Andreas Eversberg 4e2ad7dae1 Fix compiler warning in conjunction with strncpy 2018-05-21 19:39:09 +02:00
Andreas Eversberg 3438402fe2 Update ImageMagick support to API version 7 2018-05-21 19:39:09 +02:00
Andreas Eversberg 3b81007210 Refactoring command line option handling 
* Use own function to define and parse command line options

 * Command line options can be defined by config file also

 * --limesdr allows to auto-set required SDR option for LimeSDR
 2018-05-21 19:39:09 +02:00
Andreas Eversberg 6ba1b8acab Make LimeSDR tune rx to tx frequency 2018-05-21 19:39:09 +02:00
Andreas Eversberg 32cefbbffc Transcode fourth digit of TACS phone number correctly, if it is 0. 2018-04-19 21:08:45 +02:00
Andreas Eversberg 49050eff90 Add 'osmoradio', an analog radio (FM/AM) 
This radio can be a receiver or a transmitter or both simultaniously.
 2018-02-16 15:54:42 +01:00
Andreas Eversberg c4d4e7feda Add libam, a library to do AM modulation and demodulation 2018-02-16 15:54:42 +01:00
Andreas Eversberg 3fd0707a3b Add libclipper, a library to 'smoothly' clip overdriven audio levels 2018-02-16 15:54:41 +01:00
Andreas Eversberg 9197320ee6 Improved audio (sdr) handling 2018-02-16 15:54:40 +01:00
Andreas Eversberg 9af2b6e007 Improved wave playback 2018-02-16 15:54:40 +01:00
Andreas Eversberg 3a5fa8837c Improved emphasis 2018-02-16 15:54:39 +01:00
Andreas Eversberg 50fee02c63 remove obsolete function 2018-02-16 15:54:39 +01:00
Andreas Eversberg a57a5c0122 Improving and cleaning configure script 2018-02-16 15:53:48 +01:00
Andreas Eversberg 56f07a473d B-Netz: Add dial sequence generator to emulate call setup from mobile phone 2018-02-15 08:00:20 +01:00
Andreas Eversberg a5aee82e53 B-Netz: Some cleanups 2018-02-15 08:00:20 +01:00
Andreas Eversberg 6b9326982a libwave: Use libdebug for debugging messages. 2018-02-15 08:00:19 +01:00
Andreas Eversberg f91e6f5034 Make libdebug not depend on libdisplay 2018-02-15 08:00:19 +01:00
Andreas Eversberg 6277753574 Minor debug message corrections 2018-02-15 08:00:18 +01:00
Andreas Eversberg 1ef1b93776 B-Netz: Give warning about possibly unsupported channels 2018-02-15 08:00:16 +01:00
Andreas Eversberg 6df0eb46cc Fix compiler warnings 2018-02-15 08:00:15 +01:00
Andreas Eversberg 4cc33c5b0d Make sound card support (Alsa) optional 2018-02-15 08:00:15 +01:00
Andreas Eversberg 0b129d3c7f libdisplay: Removing dependency from libmobile 2018-02-15 08:00:14 +01:00
Andreas Eversberg d3385b498d NMT: Fixes on channel coding/handling 2018-02-15 08:00:12 +01:00
Andreas Eversberg 72bdd3376f Add JollyCom, a simple and experimantal mobile network 
This network that can be used with any radio and a DTMF transmitter.
 2018-01-21 10:46:09 +01:00
Andreas Eversberg f2eb6b3e70 Squelch improvement 
Continuously calculate noise floor and lower threshold level if less noise
was received. High noise or ongoing transmission during start of program will
not cause a threshold that is too far above the actual noise floor.
 2017-12-09 20:46:16 +01:00
Andreas Eversberg 9f901384de SDR: Add option to set local oscillator (LO) offset 
By default it is set to -1 MHz.
 2017-12-09 20:46:14 +01:00
Andreas Eversberg c49ee3b2a8 Remove dependencies between debug, displays and mncc-console 
Test functions are cleaned up, due to removed dependencies.
 2017-12-09 20:46:13 +01:00
Andreas Eversberg b3866de242 Add 'hold' function and level display to spectrum view 2017-12-05 11:10:47 +01:00
Andreas Eversberg 7c42d57d6e B-Netz: Minor fixes to timings and debug messages 2017-12-05 11:10:46 +01:00
Andreas Eversberg 417151e9a3 SDR: Add DC offset removal (DC bias) 2017-12-05 11:10:44 +01:00
Andreas Eversberg 9e75e64787 Add DTMF decoder to libdtmf 
Note: This decoder has no user yet.
 2017-12-03 08:46:05 +01:00
Andreas Eversberg 44247ffb53 FM modulation: Never turn carrier completely off 
This prevents IIR filter to become very slow for some unknown reason.
 2017-12-03 08:46:04 +01:00
Andreas Eversberg 7cbfaa2861 Add NaN debugging to IIR filter (disabled by default) 2017-12-03 08:46:02 +01:00
Andreas Eversberg 06092e90ed Add library to normalize speech level (Sendevolumenregler SVoR) 
Note: This lib has no user yet.
 2017-12-03 08:46:01 +01:00
Andreas Eversberg 021c695883 Restructure: Fixing library linking order 2017-12-03 08:46:00 +01:00
Andreas Eversberg 1a341f6b4e Restructure: Move debug from common code to 'libdebug' 2017-12-03 08:45:58 +01:00
Andreas Eversberg 016e72d6d7 Restructure: Move display from common code to 'libdisplay' 2017-12-03 08:45:55 +01:00
Andreas Eversberg ab59a26a51 Restructure: Move mobile from common code to 'libmobile' 2017-12-03 08:45:54 +01:00
Andreas Eversberg ed31a26eba Restructure: Move sample from common code to 'libsample' 2017-12-03 08:45:48 +01:00
Andreas Eversberg 1650cc5ad2 Restructure: Move sdr from common code to 'libsdr' 2017-12-03 08:45:45 +01:00
Andreas Eversberg 45a5568f70 Restructure: Move sound from common code to 'libsound' 2017-11-25 19:28:36 +01:00
Andreas Eversberg 0e3e4d9230 Restructure: Move img from common code to 'libimage' 2017-11-25 19:28:35 +01:00
Andreas Eversberg 7b539d5dc7 Restructure: Move mncc from common code to 'libmncc' 2017-11-25 19:28:33 +01:00
Andreas Eversberg 9776736cc4 Restructure: Move compandor from common code to 'libcompandor' 2017-11-25 19:25:10 +01:00
Andreas Eversberg 083ea4edaa Restructure: Move fsk from common code to 'libfsk' 2017-11-25 19:24:03 +01:00
Andreas Eversberg f4754dcb37 Restructure: Move fm_modulation from common code to 'libfm' 2017-11-25 19:24:02 +01:00
Andreas Eversberg 7af9b752a0 Restructure: Move 'libgermantone' to a-netz code 2017-11-25 19:23:59 +01:00
Andreas Eversberg cb30c96bc6 Restructure: Move fft from common code to 'libfft' 2017-11-25 19:23:57 +01:00
Andreas Eversberg 40c24a70b2 Restructure: Move emphasis from common code to 'libemphasis' 2017-11-25 19:23:56 +01:00
Andreas Eversberg 16194c15f9 Restructure: Move goertzel from common code to 'libgoertzel' 2017-11-25 19:23:54 +01:00
Andreas Eversberg c84318b245 Restructure: Move jitter from common code to 'libjitter' 2017-11-25 19:23:53 +01:00
Andreas Eversberg 8f6d0752df Restructure: Move squelch from common code to 'libsquelch' 2017-11-25 19:23:50 +01:00
Andreas Eversberg 60ffdcaf53 Restructure: Move hagelbarger from common code to 'libhagelbarger' 2017-11-25 19:23:49 +01:00
Andreas Eversberg ac7bb3539f Restructure: Move wave from common code to 'libwave' 2017-11-25 19:23:47 +01:00
Andreas Eversberg fd3a4d7ac2 Restructure: Move dtmf from common code to 'libdtmf' 2017-11-25 19:23:46 +01:00
Andreas Eversberg 17b34fbae6 Restructure: Move scrambler from C-Netz code to 'libscrambler' 2017-11-14 21:04:58 +01:00
Andreas Eversberg ffd934709f Restructure: Move classic German tones from common code to 'libgermanton' 2017-11-13 20:14:03 +01:00
Andreas Eversberg b605da1aff Restructure: Move timer from common code to 'libtimer' 2017-11-13 20:00:52 +01:00
Andreas Eversberg 1b183864bb Restructure: Move sample rate conversion from common code to 'libsamplerate' 2017-11-13 19:34:05 +01:00
Andreas Eversberg 669705c6ed Restructure: Move filters from common code to 'libfilter' 2017-11-13 19:15:09 +01:00
Andreas Eversberg fc1c5de547 Fixed pointer corruption bug in timer.c 2017-11-11 09:36:05 +01:00
Andreas Eversberg 8a74805ea6 NMT: Add support for receiving 8-Bit-SMS, because it is mandatory 
Benefone Dragon uses this coding scheme for SMS-Submit.
 2017-11-11 09:35:46 +01:00
Andreas Eversberg 486d2d5dbe NMT: Fixup assign traffic channel 
dms_call state now belongs to transaction, so it is kept while switching
to traffic channel.
 2017-11-11 09:35:44 +01:00
Andreas Eversberg ce2bb8ec43 Fixup call control split 2017-11-11 05:55:32 +01:00
Andreas Eversberg e9583d5661 R2000: Make recall work when call is directly answered by call_up_setup 
It is not recommended to use recall function with built-in MNCC (auto-answer),
because the phone is not fast enough to switch back to call control channel
and so it misses the first paging. But anyway it works.

Also the channel layout is checked for having traffic and control channel.
 2017-11-05 17:00:01 +01:00
Andreas Eversberg aeb31a7a34 A-Netz: Number of operator can be defined now 
Since A-Netz does not allow automatic dialing, the call is forwarded
to an operator. Use -O <number> to change the default operator's number.
 2017-11-05 16:59:59 +01:00
Andreas Eversberg ca6d70566c Fixup displaying measurements (array overflow) 2017-11-05 16:59:59 +01:00
Andreas Eversberg e8a3306eee Add option to cross-connect calls; Calls between mobiles are now possible 
Use -x to enable call cross-connect. No MNCC socket, no call device must
be specified!

Be sure to have at least one control channel and two voice channels.
Alternatively you can use one combined control/voice channel and one
voice channel.
 2017-11-05 16:59:58 +01:00
Andreas Eversberg 87a21a285a NMT: Assign traffic channel for outgoing and incoming calls 
This way the control channel stays available for other (idle) phones.

No more loss of coverage for other phones, when a call to a mobile is
made.

It is still possible to define a combined control+traffic channel.
(e.g. for single channel setup)
 2017-11-05 16:58:37 +01:00
Andreas Eversberg 5c33b8824b AMPS/TACS: Fixing release towards mobile station on FVC 
We must continuously send release frames until Signaling Tone changes,
so we know that the phone has received the release.
 2017-11-05 16:58:36 +01:00
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