41 commits

Author	SHA1	Message	Date
Thomas Kolb	aa5ffee872	digipeater: remove empty packet from current connection after burst	2024-12-03 21:37:29 +01:00
Thomas Kolb	627eed7426	Remove data callbacks in connection and digipeater modules	2024-11-17 18:26:18 +01:00
Thomas Kolb	c1af786a70	WIP: handle packets from the TUN device in digipeater ... This is only a backup commit.	2024-11-10 23:13:54 +01:00
Thomas Kolb	49fe1fff29	l2udptest_client: fix compilation	2024-11-10 21:40:07 +01:00
Thomas Kolb	93d74be000	WIP: managing multiple connections ... Working towards handling multiple connections. A lot is still missing.	2024-11-10 17:02:14 +01:00
Thomas Kolb	03912a6185	Do all time calculations in uint64_t ... This prevents loss of precision that occurs with double-precision floats if timestamps become very large. Timestamps are already large if they contain a UNIX time value (requires 60 bits; double has 53 bit resolution).	2024-11-02 16:17:52 +01:00
Thomas Kolb	4281ae4be7	l2udptest: replace by two programs: client and digipeater ... Both are identical so far, this is just an infrastructure commit.	2024-11-02 16:07:25 +01:00
Thomas Kolb	04397c2c95	Remove empty packet from queue after burst was transmitted	2024-09-22 18:46:32 +02:00
Thomas Kolb	f0770baf31	Handle received packets	2024-09-22 15:34:50 +02:00
Thomas Kolb	0a77109ab5	l2udp: Use the new layer2 connection module	2024-09-22 15:24:20 +02:00
Thomas Kolb	85ec105d0f	Pass received packets to layer 2 processing	2024-09-22 14:45:24 +02:00
Thomas Kolb	ec6dd92444	Basic infrastructure for layer2-over-udp test	2024-09-22 14:32:49 +02:00
Thomas Kolb	2e91fd7c42	Apply free software+documentation licenses ... All code is now licensed under GPLv3+. The documentation is licensed under CC BY-SA 4.0. This is now officially free software! \o/	2024-08-23 11:53:40 +02:00
Thomas Kolb	017eb221f1	Integrate the interleaver	2024-08-16 22:14:07 +02:00
Simon Ruderich	9845514a46	layer2/packet_queue: permit using full queue size ... Previously, only PACKET_QUEUE_SIZE - 1 elements could be stored.	2024-07-23 08:41:25 +02:00
Thomas Kolb	c9916c08da	Add a simple interleaver implementation (not used yet)	2024-07-21 17:23:15 +02:00
Thomas Kolb	77b24cf591	tests: Added variant of rx_file test for layer2 debugging	2024-07-20 22:31:13 +02:00
Thomas Kolb	2348cd0c88	Implement a packet queue (incl. tests)	2024-07-11 23:23:18 +02:00
Simon Ruderich	62d81fc2cc	test_ham64: check results using assertions	2024-07-04 21:16:20 +02:00
Thomas Kolb	4bb4017623	HAM-64 address format implementation	2024-07-01 21:03:43 +02:00
Thomas Kolb	de0f3620e6	Move hexdump() function to utils	2024-06-01 16:04:17 +02:00
Thomas Kolb	f6404dd0ea	Move payload CRC to layer 2 ... Layer 1 only does decoding of the FEC, but the CRC check for data integrity is done in layer 2 now.	2024-05-31 17:25:50 +02:00
Thomas Kolb	0e8e049e0a	Replace all perror() calls with LOG()	2024-05-30 11:02:08 +02:00
Thomas Kolb	65daa182ef	Use the new logging system everywhere	2024-05-30 10:49:43 +02:00
Thomas Kolb	d6eaef91cd	Switch to new logging system ... The new system supports: - time-tagging of log messages - message priority levels with a threshold below which they are not printed - colored output of the message priority for easy identification - compile-time disabling of all logging per C module So far, it is integrated in the main and rx modules which generate most messages. Other modules will be migrated in the future.	2024-05-28 23:53:11 +02:00
Simon Ruderich	657ac4faa3	test_rx_file: add JSON logging (controllable via JSONLOGGER define)	2024-05-28 08:51:56 +02:00
Simon Ruderich	0237ea6494	tests: fix compile	2024-05-09 18:32:51 +02:00
Simon Ruderich	f689c4ec15	Fix compiler warnings ... - implicit declaration of built-in function 'strncpy' - control reaches end of non-void function - assignment to 'void (*)(int, siginfo_t *, void *)' from incompatible pointer type 'void (*)(int)'	2024-05-09 14:37:39 +02:00
Thomas Kolb	a42d795002	Dump debug info from the RX via jsonlogger	2024-05-07 21:40:29 +02:00
Thomas Kolb	5bcd3a6933	jsonlogger: add test file and improve open/close behaviour	2024-05-05 18:40:50 +02:00
Simon Ruderich	a3928d0ad0	Fix compiler warnings ... - passing argument 2 of 'crc_generate_key' discards ‘const’ qualifier; a bit ugly but signature of crc_generate_key() is wrong - variable 'linearized_history' set but not used - typedef is unused - superfluous arguments to DEBUG_LOG() and fprintf() - implicit declaration of function 'memset' - unused arguments	2024-04-27 12:22:33 +02:00
Simon Ruderich	2768e21849	test_rx_file: set nco frequency	2024-04-20 01:14:17 +02:00
Thomas Kolb	4f4128fbd3	test: fixed build errors	2024-03-31 18:01:00 +02:00
Thomas Kolb	bbf7bcf2f0	test/freq_est: add channel simulation	2024-03-30 22:05:02 +01:00
Thomas Kolb	d9707ac4a9	test: add test_rx_file	2024-03-30 21:56:00 +01:00
Thomas Kolb	f5a367464f	Optimized one-shot frequency synchronization ... - Ramp-up length increased to 128 symbols (here is room for improvement!) - Try to detect the frequency once during ramp-up. To do so, every second symbol is inverted (to remove the +/-1 symbol toggling) and the phase difference between neigboring resulting symbols is checked. When it is low enough for all symbols, the frequency is estimated and corrected. When frequency estimation was done, it is not retried for a number of incoming symbols in order to allow the timing estimator to converge again. - This approach was verified in a simulated loopback test with frequency offset and AWGN.	2023-05-17 22:28:18 +02:00
Thomas Kolb	a7db93ab9e	Added test for frequency estimator	2023-05-17 22:26:46 +02:00
Thomas Kolb	7d5b67a257	Add layer 1 software loopback test	2023-05-12 13:46:02 +02:00
Thomas Kolb	513a399ae4	Refactoring: moved layer1-related stuff to subdirectory	2022-02-13 20:05:47 +01:00
Thomas Kolb	f2c95a125d	Use new frequency+phase estimation method for preamble	2022-02-06 18:04:31 +01:00
Thomas Kolb	9a1107ff38	Added correlator + small test program	2022-01-22 22:42:05 +01:00