92843c43c9
Add AX.25 encoder that supports the legacy hardware radios
...
The new encoder now supports NRZI and G3RUH scrambling that makes it
compatible with most of the FSK9600 modems.
Remove also some unneeded blocks.
2016-06-30 23:39:16 +03:00
a22d37e961
Improve and make more generic the whitening mechanism
...
* The AX.25 framing now supports whitening.
* Change again the AFSK flowgraph.
2016-06-22 15:37:27 +03:00
bfa2313242
Redesign the AFSK transmitter using VCO
2016-06-14 13:05:23 +03:00
c1904037bd
Different approach creating the AFSK pulse.
...
Seems that the hardware filters out some part of the signal
2016-06-12 23:17:53 +03:00
13cb10499e
Improve pulse shaping at the AFSK TX
2016-06-12 22:31:29 +03:00
b4900fe21e
Improve AFSK transmission
...
Add also an AFSK receiver for easier debugging.
2016-06-12 15:31:56 +03:00
1fe1287c2c
Add AFSK flowgraph for hardware radio transmission
2016-06-11 20:09:51 +03:00
6ed86dbae5
Add new debug message source that can accept raw bytes
2016-06-02 17:06:40 +03:00
0067c19454
Fix baudrate value at the transmitter
2016-05-30 04:48:45 +03:00
f8cc294e6f
Add UPSat communication flowgraphs
2016-05-30 04:43:49 +03:00
ed96930438
Small bug fix
...
The new[] deamon appeared again!
2016-05-17 20:18:20 +03:00
7009f9cdb9
Fix small issues
2016-05-15 00:07:23 +03:00
d973f75307
Merge pull request #24 from GVardakis/next
...
Small change to hex print
2016-05-14 20:22:36 +03:00
fb9f887587
Small change to hex print
2016-05-14 19:48:21 +03:00
c63b095b7b
Merge pull request #23 from GVardakis/next
...
Changed name of transmitter hierarchical block
2016-05-13 20:45:43 +03:00
2afb258c11
Merge branch 'next' of https://github.com/satnogs/gr-satnogs into next
2016-05-13 17:46:52 +03:00
de61e34393
Changed name of hierarchical block
2016-05-13 17:46:19 +03:00
6f4e289518
Merge pull request #20 from GVardakis/next
...
Added satnogs transmitter hierarchy block
2016-05-13 17:37:46 +03:00
855ac47c26
Added the "0x" prefix to hex representation
2016-05-13 16:19:47 +03:00
455e19e466
Added hex and binary output sink
2016-05-13 15:57:33 +03:00
b7ebcd5db5
Added satnogs transmitter hierarchy block
2016-05-12 17:25:13 +03:00
c28c82c873
Add coarse doppler shift correction block
2016-05-11 21:17:58 +03:00
8a81ebc4ff
Fix frame length bug at UPSAT FSK transmitter
...
The frame length field was set in number of bits instead of number of
bytes, only when the transmitter was configured in AX.25 mode.
2016-05-11 14:25:16 +03:00
df8cffbe1a
Remove blocking timeout parameter for compatibility
2016-05-09 22:07:39 +03:00
3d67b098ef
Merge branch 'next' of https://github.com/satnogs/gr-satnogs into next
2016-05-09 20:57:09 +03:00
76c28b0b21
Change the pmt::to_float() to pmt::to_double() for compatibility
2016-05-09 20:56:44 +03:00
6b98025cf5
Fix memory de-allocation at rigctl message source block
2016-05-09 03:14:44 +03:00
926eca7f8e
Fix memory corruption
2016-05-09 03:04:31 +03:00
5e1667ff9a
Add FM demodulation flowgraph with RIGCTL support
...
The FM demodulation flowgraph uses the high performance Xlating FIR
filter for filtering and frequency centering at the same time. Tuning
the SDR in a frequency different than the frequency of interest, we
avoid the DC offset that the of the SDR. As far the audio sampling rate
concerns, various configurations are supported due to the Polyphase
Filter-bank arbitrary resampler.
The flowgraph supports also doppler compensation based on RIGCTL
commands. Instead of chaning the SDR frequency, we digitally perform the
proper correction to avoid noise and lost samples during the frequency
re-configuration. The doppler correction mechanism gathers the frequency
changes from the RIGCTL daemon, and predicts the frequency changes
between the RIGCTL messages for better and more fine-grained correction.
2016-05-08 17:02:43 +03:00
fcc5452b5b
Fix small bug at the AX.25 decoder
2016-04-29 22:58:56 +03:00
e79e98fbd8
AX.25 support at the UPSAT FSK encoder/decoder
2016-04-29 21:43:09 +03:00
652c257b01
Add UDP PMT message sink block
2016-04-29 02:21:00 +03:00
382e5a615b
Start the AX.25 integration into UPSAT FSK framing
2016-04-26 22:21:42 +03:00
e7893a4b98
Fix markdown
2016-04-24 14:57:09 +03:00
cb1f13b85c
Add FSK transceiver flowgraph examples
2016-04-24 14:35:46 +03:00
5497dce87f
Fix the burst tag issue at the FSK frame encoder
2016-04-15 20:59:09 +03:00
10d4519bcb
Implement the whitening and de-whitening process for the UPSAT
...
The data whitening and de-whitening mechanism is implemented using
lookup tables for fast processing times. The implementation is quite
generic and modular supporting user defined polynomial masks and seeds.
The lookup table is created during the initialization without any
runtime overhead.
2016-04-11 21:26:57 +03:00
defb1378b8
Add a flowgraph example for the receiving rigctl commands
2016-04-11 20:24:17 +03:00
34ae5f143b
Fix CRC16 calculation and transmission
...
The CC1120 uses the non-reversed version of the CRC16-CCIIT. Also the
CRC16 is transmitted in network byte order
2016-04-09 18:39:02 +03:00
0c354da145
Finish the FSK frame encoder for the CC1120
2016-04-08 21:41:21 +03:00
e80486cc07
FSK receiver for the CC1120 works!
...
The FSK receiver of the CC1120 can now retrieve the frame that is
transmitted over the air. The next step is to provide the support for
data whitening and Manchester coding.
2016-04-07 19:49:41 +03:00
228fd37014
Implement the UPSAT FSK encoder block.
...
Fix also a small bug at the UPSAT FSK decoder block.
2016-04-06 21:27:46 +03:00
4b3b08f200
Finished the FSK frame acquisition.
2016-04-05 21:29:23 +03:00
bb57d63517
Continue with the FSK decoder for the UPSAT
2016-04-04 00:29:28 +03:00
6ae7614af2
Start the FSK frame acquisition block of the UPSAT.
...
After managing to successfully receive raw bytes from the TI devboard
with the CC1120, its now time to pack them into a frame by searching for
the preamble and synchronizing with the known byte sync word.
2016-04-02 23:02:38 +03:00
0ada5f618d
Merge branch 'GVardakis-vardakis/json_to_ecss' into next
2016-04-02 22:31:48 +03:00
5659dc6b0a
Merge branch 'vardakis/json_to_ecss' of https://github.com/GVardakis/gr-satnogs into GVardakis-vardakis/json_to_ecss
2016-04-02 22:31:22 +03:00
97b141d267
Fix a memory allocation issue
2016-04-02 22:26:31 +03:00
1b0791e9d0
Last commit about license
2016-04-02 17:32:41 +03:00
a5fea217d6
Completed change of license in all files
2016-04-02 17:31:30 +03:00
Manolis Surligas
Manolis Surligas
George Vardakis
Sleepwalker