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MMDVM
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68 Commits

Author SHA1 Message Date
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
Jonathan Naylor f936bc6fe8 Use a shorter filter. 2020-04-22 14:15:07 +01:00
Jonathan Naylor 3f1f1d1586 Small tidy-ups. 2020-04-22 14:08:34 +01:00
Geoffrey Merck 63847ebe62 One loop to rule them all ! 
Change CFM::Samples and CFMCTCSSRX::process to be able to process all
stuff in one and only loop.
 2020-04-22 11:04:27 +02:00
Jonathan Naylor 03f5056236 Small code cleanups. 2020-04-21 22:30:28 +01:00
Geoffrey Merck 1b0229ca6c Attemp to do filtering 2020-04-21 23:03:30 +02:00
Geoffrey Merck ae6cbcd9e7 Minor clean up 2020-04-21 22:43:59 +02:00
Geoffrey Merck 1c599138ad GetAudio do not take any arguments 2020-04-21 22:00:11 +02:00
Geoffrey Merck 9170c398be Reenable CTCSS 2020-04-21 21:36:30 +02:00
Geoffrey Merck 04fd9838b5 Fix state machine wrong kerchunk 2020-04-21 21:00:09 +02:00
Geoffrey Merck 8d340cbfba (almost) One loop to rule all the samples 
Avoid looping over and over the samples. One
 2020-04-21 20:38:02 +02:00
Geoffrey Merck 87c3b57ae4 Stripping ut stuff, testing 2020-04-21 18:45:11 +02:00
Jonathan Naylor 0a51b4c34e Store FM output in a ring buffer. 2020-04-20 21:57:21 +01:00
Jonathan Naylor 046a1de51a Reduce the size of the main FM filter. 2020-04-20 13:54:11 +01:00
Jonathan Naylor 5ed8eeda6f Allow kerchunk audio to pass through. 2020-04-19 21:40:51 +01:00