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Author SHA1 Message Date
Jonathan Naylor 7a75db2aeb Remove the bit shift of the sample. 2020-04-23 21:30:41 +01:00
Jonathan Naylor bf5ad25609 A working fixed point Goertzel based on simulations. 2020-04-23 12:36:34 +01:00
Jonathan Naylor f19009b132 Allow for two levels of the callsign. 2020-04-22 22:10:34 +01:00
Jonathan Naylor 526a53cd8c Use fixed point for the Goertzel algorithm. 2020-04-22 17:40:01 +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
Jonathan Naylor 7940025095
Merge pull request #223 from F4FXL/FM 
One loop to rule them all !
 2020-04-22 13:30:56 +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
Jonathan Naylor 23ff29c8f1
Merge pull request #222 from F4FXL/FM 
Almost working FM
 2020-04-21 22:09:58 +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
Geoffrey Merck 7befef2f4a Avoid looping samples 2 times, convert each sample on the fly 2020-04-21 18:41:27 +02:00
Geoffrey Merck b2dcbb2df8 Merge remote-tracking branch 'upstream/FM' into FM 2020-04-21 07:03:35 +02:00
Jonathan Naylor 0a51b4c34e Store FM output in a ring buffer. 2020-04-20 21:57:21 +01:00
Geoffrey Merck 3b653dca6a Merge remote-tracking branch 'upstream/FM' into FM 2020-04-20 20:49:58 +02:00
Jonathan Naylor 046a1de51a Reduce the size of the main FM filter. 2020-04-20 13:54:11 +01:00
Jonathan Naylor ae58f8eb64 Don't square the threshold value. 2020-04-20 13:28:07 +01:00
Geoffrey Merck e4c351d5d0 delete old BS 2020-04-20 07:46:03 +02:00
Geoffrey Merck 0b0a59497f Merge branch 'FM' of https://github.com/F4FXL/MMDVM into FM 2020-04-20 07:43:07 +02:00
Geoffrey Merck 939b019592 delete old BS 2020-04-20 07:42:39 +02:00
Geoffrey Merck 3d54519dbf add CTCSS decoder 2020-04-20 07:42:39 +02:00
Geoffrey Merck 94f566aacc Add Goertzel 2020-04-20 07:42:39 +02:00
Geoffrey Merck a765e863c0 delete old BS 2020-04-20 07:42:39 +02:00
Geoffrey Merck 9e552ba1ab add CTCSS decoder 2020-04-20 07:39:19 +02:00
Geoffrey Merck b03fead62d Add Goertzel 2020-04-20 07:39:19 +02:00
Geoffrey Merck 2825c25607 Merge remote-tracking branch 'upstream/FM' into FM 2020-04-20 07:23:59 +02:00
Jonathan Naylor 5ed8eeda6f Allow kerchunk audio to pass through. 2020-04-19 21:40:51 +01:00
Jonathan Naylor 1aef1a39f2 Revert the CTCSS decoder to floats. 2020-04-19 21:21:10 +01:00
Jonathan Naylor a310bf0547 Adjust the coefficients again. 2020-04-19 19:46:44 +01:00
Geoffrey Merck 116b51bd8d delete old BS 2020-04-19 20:45:14 +02:00
Geoffrey Merck c05e7bf873 Merge branch 'FM' of https://github.com/F4FXL/MMDVM into FM 2020-04-19 20:44:18 +02:00
Geoffrey Merck c14ae56e2d delete old BS 2020-04-19 20:43:50 +02:00
Geoffrey Merck 32a71bfbf6 Use long based algorithm 2020-04-19 20:42:57 +02:00
Geoffrey Merck 7435074c0f add CTCSS decoder 2020-04-19 19:34:47 +02:00
Geoffrey Merck ec202d7fb9 Add Goertzel 2020-04-19 19:34:47 +02:00
Jonathan Naylor 6575cba982 Rescale the coefficient. 2020-04-19 17:59:04 +01:00
Jonathan Naylor a17bd9cc1d Don't scale up the sample values. 2020-04-19 17:37:24 +01:00
Jonathan Naylor f7e5c2436c Convert the Goertzel algorithm to Q15 and Q31. 2020-04-19 16:52:11 +01:00
Jonathan Naylor 85816d5bec Re-add COS. 2020-04-18 16:59:25 +01:00
Jonathan Naylor ebdba2bdb9 Convert to using floats. 2020-04-18 16:48:30 +01:00
Jonathan Naylor 6d5b864cba Start the Goertzel development. 2020-04-18 16:07:52 +01:00
Jonathan Naylor c8a450b00d Ensure all timers are stopped when we leave FM mode. 2020-04-18 15:51:49 +01:00
Jonathan Naylor 61ccd79c5f Set up the FM mode pins, partially. 2020-04-18 14:31:21 +01:00