Andreas Eversberg
860f91af6f
Bugfix: Correct handling of n in strncat()
2019-11-29 15:58:32 +01:00
Andreas Eversberg
830794bae4
FSK demodulator: Also report bits that have duration < 0.5
2019-11-29 15:58:32 +01:00
Andreas Eversberg
445af0c0a2
Add filter switch to FSK modulator
2019-11-29 15:58:32 +01:00
Andreas Eversberg
6dcc8baad4
Split FSK modem code into separate modulator and demodulator
2019-11-29 15:58:32 +01:00
Andreas Eversberg
360729d270
C-Netz: Added list of base station names and IDs
...
Automatic polarity detection is now done by using the polarity of last
transmitted message. We cannot use two base station IDs anymore, to
detect the polarity. Now we deal only with the defined base station ID.
2019-11-29 15:58:32 +01:00
Andreas Eversberg
008bca784b
C-Netz: Show if emergency call is made
2019-11-29 15:58:32 +01:00
Andreas Eversberg
195f7481d8
C-Netz: Correctly synchronize time stamp of SpK to OgK
...
Even if the SpK is not used (yet), it must count time stamp (bit_time) so that
SpK keeps in sync with the OgK, until frames are received from mobile station.
2019-10-26 16:57:01 +02:00
Andreas Eversberg
6dd9999dc8
C-Netz: Fixup for broken Authentication patch
...
MT calls did not work.
2019-10-26 16:57:01 +02:00
Andreas Eversberg
9a531c4a6d
IMTS: Docs!
2019-08-30 17:17:10 +02:00
Andreas Eversberg
99bafb6880
MTS/IMTS: (Improved) Mobile Telephone Service
...
Implementation of the 0G Mobile Phone Network of US and Canada
MTS or IMTS mode is selectable, als well as 5 or 7 digit mode.
2019-08-30 17:17:10 +02:00
Andreas Eversberg
31fca59294
Fixed performance issue with IIR filter
...
Passing samples with zero value (0.0) causes very slow processing of
IIR filter on my test machine 'nuedel'. I don't know why.
To solve this, I add a very small number to each input sample.
2019-08-26 21:10:39 +02:00
Andreas Eversberg
f86adf4bb5
Fixed an unitialized-buffer bug.
2019-08-26 21:10:37 +02:00
Andreas Eversberg
b9fe47e85d
Fixed use-after-free bug (config file handling)
2019-08-26 21:10:34 +02:00
Andreas Eversberg
af4bcb1522
Remove useless debug lines
2019-08-26 21:10:33 +02:00
Andreas Eversberg
1a76aebbc4
SDR: Use greater offset from center frequency, if only one channel is used.
2019-08-26 21:10:31 +02:00
Andreas Eversberg
3139c7a349
Move American tones into a lib, so that it can be used by IMTS also
2019-08-26 21:10:28 +02:00
Andreas Eversberg
d6579c1244
Allow giving alphanumeric channels (Prepare for IMTS)
2019-08-26 21:10:20 +02:00
Andreas Eversberg
b266b0f743
Osmo-TV: Add missing images from DOCS
2019-08-26 21:07:38 +02:00
Martin Hauke
75765d49b7
Fixed many typos in output and source code comments
2019-07-15 21:14:52 +02:00
Andreas Eversberg
c357ab5ad5
Allow dialing national and international prefix for AMPS/TACS
2019-07-06 07:30:18 +02:00
Andreas Eversberg
41ee8239df
Radio: Add option to change volume of transmission/reception
2019-07-05 21:50:24 +02:00
Andreas Eversberg
1eac087935
Output ASCII art image after all init functions (inside main_mobile.c)
2019-06-30 14:51:01 +02:00
Andreas Eversberg
13245c56f6
C-Netz: Add authentication support (process only)
...
No real authentication, since the algorithm and the keys inside the cards
are not known. A challenge can be specified and optionally the response
can be verified.
2019-06-30 14:51:01 +02:00
Andreas Eversberg
5d9a9b59c3
OsmoTV: Generate correct amplitude of color signal (hopefully)
2019-06-01 19:15:06 +02:00
Andreas Eversberg
4362c78f38
SDR: Display DC line (center frequency) in the spectrum view
2019-05-30 21:08:23 +02:00
Andreas Eversberg
831b68401a
SDR: Move center frequenc (DC) away from channels
...
If one channel is used, shift the center frequency down by half of the bandwidth.
If more channels are used, select a center frequency between two channels close to the center, but equal distance.
Show the spectum layout on startup.
This patch reverts f1292a985b
2019-05-30 21:07:41 +02:00
Andreas Eversberg
37406db7e3
Minimum frequency must be 8000 Hz
2019-05-30 18:19:06 +02:00
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
ea5e17a036
work on docs
2018-12-23 19:42:42 +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