williamp/osmocom-analog
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
384 Commits 1 Branch 0 Tags
b605da1aff81c2688bf43dfa50c4ea3e5b89b722
Commit Graph

119 Commits

Author SHA1 Message Date
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
ee3fbeb03b Split call control from built-in call console by using MNCC layer 2017-11-05 16:58:31 +01:00
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
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
3f2f0fdd8c C-Netz: Show standard deviation of bit levels instead of jitter 2017-10-02 12:34:33 +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
a52c89800c SDR: Split SDR config from main_mobile.c to sdr_config.c 2017-09-02 07:34:48 +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
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
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
8ce3ff455d Add incoming answer to call control, also allow to send recall tone 2017-08-09 17:27:08 +02:00
Andreas Eversberg
538b4a42ec Add wave file playback to replace TX audio 2017-07-15 07:38:16 +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
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
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
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
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
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
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
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
faa3dfb7d4 C-Netz: Make average to clock measurements for a quicker result 2017-02-18 21:01:19 +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
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
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
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
2d8d7e62c1 Use global init/cleanup function 2017-02-18 21:00:58 +01:00
Andreas Eversberg
a5fd375237 Fixed typos 2017-02-18 21:00:55 +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
c5cf88ce57 Prepare for SDR: Add bandwidth and deviation info to sender instance 2017-02-18 21:00:47 +01:00