82 commits

Author	SHA1	Message	Date
Jonathan Naylor	1ac0628c1c	Improve the code efficiency slightly.	2020-07-14 14:54:47 +01:00
Jonathan Naylor	dc41fd83d2	Test the use of a reverse burst at the end of a transmission.	2020-07-14 12:20:42 +01:00
Jonathan Naylor	20013e3adc	Make Use COS As Lockout a run-time parameter and allow for different access modes.	2020-07-13 17:13:01 +01:00
Jonathan Naylor	ccdbe126e0	Fix the timeout tones.	2020-07-12 15:22:35 +01:00
Jonathan Naylor	5f29808b80	Set the COS LED correctly.	2020-05-19 12:09:44 +01:00
Jonathan Naylor	063b21f999	Try and make the closing callsign appear.	2020-05-18 11:09:56 +01:00
Jonathan Naylor	ff375abb0e	Hold off the mode change until the ack and callsign have been ... transmitted.	2020-05-14 12:10:37 +01:00
Jonathan Naylor	435544f7a1	Add CTCSS hysteresis.	2020-05-12 13:55:30 +01:00
Jonathan Naylor	4cba5931f4	Loosen the conditions for returning to STATE_IDLE	2020-05-10 21:29:01 +01:00
Jonathan Naylor	66ea3ad0d1	Only use the CTCSS delay when not using COS.	2020-05-10 17:15:54 +01:00
Geoffrey Merck	a2518e99f2	Fix stuck on TX	2020-05-10 17:29:17 +02:00
Jonathan Naylor	3bb7cde322	Add input audio delay to match the CTCSS decoder results.	2020-05-09 13:01:02 +01:00
Jonathan Naylor	fa29a27695	Ensure all output audio is flushed before leaving FM state.	2020-05-09 12:53:50 +01:00
Jonathan Naylor	e30eb3adaf	Reduce the output buffer loading.	2020-05-08 17:18:26 +01:00
Jonathan Naylor	9b0fed975c	Buffer output after adding some initial silence.	2020-05-08 15:48:03 +01:00
Geoffrey Merck	feff1ee2c7	remove emphasis	2020-05-08 09:04:28 +02:00
Geoffrey Merck	77e0deee76	Make whole FM chain RX level independant	2020-05-08 09:01:00 +02:00
Jonathan Naylor	eb9c0dfd93	Allow for the inversion of COS levels.	2020-05-06 11:34:04 +01:00
Geoffrey Merck	a4ddc2a060	Merge remote-tracking branch 'upstream/FM' into bugfix/STM32F1_POG	2020-05-05 11:02:27 +02:00
Geoffrey Merck	a938c8b708	Reduce buffer size	2020-05-05 10:48:44 +02:00
Jonathan Naylor	aa7a484c7a	Allow the start callsign to occur when the kerchunk timer has latched.	2020-05-04 22:18:51 +01:00
Jonathan Naylor	915be8c279	Calculate the AckMinTime accurately.	2020-05-04 22:06:57 +01:00
Jonathan Naylor	4feca3c5b7	Clock the timers seperately.	2020-05-03 13:08:33 +01:00
Jonathan Naylor	edddbedd4b	Fix compilation issues.	2020-05-02 15:46:36 +01:00
Jonathan Naylor	baa4f7aa4c	Last minute tidy-ups.	2020-05-02 14:47:43 +01:00
Jonathan Naylor	5b32fecc0a	Remove the pre- and de-emphasis and the downsampler.	2020-04-30 11:39:04 +01:00
Jonathan Naylor	cc785e3225	Revert "Change emphasis time constant to 750µS"	2020-04-30 11:23:19 +01:00
Geoffrey Merck	69e39e36b0	Change emphasis time constant to 750µS	2020-04-30 10:26:04 +02:00
Jonathan Naylor	b2f33fd4d2	Bump the version date.	2020-04-29 21:51:12 +01:00
Jonathan Naylor	200199c5d4	Reduce the CPU load slightly.	2020-04-29 20:59:48 +01:00
Geoffrey Merck	b23620ede3	Add de and pre emphasis	2020-04-29 20:42:20 +02:00
Geoffrey Merck	626a280d27	Add filter chrachertitics comment	2020-04-29 18:24:15 +02:00
Geoffrey Merck	4b267c2e1e	Move downsampling tap point	2020-04-28 22:35:06 +02:00
Geoffrey Merck	cf18f95a92	Add Downsampling	2020-04-28 21:37:06 +02:00
Jonathan Naylor	dac0f26e5d	Rename RXBoost to RFAudioBoost.	2020-04-28 14:43:40 +01:00
Jonathan Naylor	e8ed77241c	Simplify the calculations.	2020-04-27 12:05:55 +01:00
Geoffrey Merck	93a8e63233	Remove m_rxLevel	2020-04-27 11:26:19 +02:00
Geoffrey Merck	4ffaa62855	Move division to CTCSSRX, change sample unscaling to 1/rxLevel	2020-04-27 11:16:06 +02:00
Jonathan Naylor	f9530ee82a	Pass the RX level to the FM controller.	2020-04-26 22:01:11 +01:00
Geoffrey Merck	6824d5662a	Remove dependency to IO in CTCSSRX	2020-04-26 12:24:05 +02:00
Jonathan Naylor	b963b2b848	Add optional over deviation blanking.	2020-04-25 22:32:10 +01:00
Jonathan Naylor	4fe1c11250	Remove memory leak and other configuration funnies.	2020-04-25 17:29:10 +01:00
Jonathan Naylor	6ac6deba10	Add two more FM parameters.	2020-04-25 15:17:11 +01:00
Jonathan Naylor	33f88344c3	Run the holdoff timer permamnently.	2020-04-24 12:15:58 +01:00
Geoffrey Merck	2057ef5206	clean up	2020-04-24 09:40:06 +02:00
Geoffrey Merck	5c2659deaa	Add FM filtering	2020-04-24 09:40:06 +02:00
Geoffrey Merck	4f9d5a8c70	3rd order IIR	2020-04-24 09:40:06 +02:00
Geoffrey Merck	8ecd8b67f4	Using 2 stage IIR filter	2020-04-24 09:40:06 +02:00
Jonathan Naylor	f19009b132	Allow for two levels of the callsign.	2020-04-22 22:10:34 +01:00
Jonathan Naylor	57730d7f81	Implement an efficient FIR filter.	2020-04-22 14:37:23 +01:00