Commit Graph

140 Commits

Author SHA1 Message Date
Robert Jördens 0d1b237202 complex: richer API 2021-01-30 18:05:54 +01:00
Robert Jördens 36288225b3 rpll: extend to above-nyquist frequencies 2021-01-28 22:21:42 +01:00
Robert Jördens 1749d48ca3 Revert "rpll: auto-align counter"
This reverts commit dbacc5293e12f712fef7bd85848e1b0bd8fde823.
2021-01-27 09:01:07 +01:00
Robert Jördens 45e7d6de3c rpll: auto-align counter 2021-01-27 09:01:07 +01:00
Robert Jördens 7c1fa9695a iir lowpass: f32 is sufficient 2021-01-26 19:37:05 +01:00
Robert Jördens 73c98c947a iir_int: remove spurious note 2021-01-26 19:23:23 +01:00
Robert Jördens 2b439a0231 lockin: remove broken tests, to be rewritten 2021-01-26 19:22:02 +01:00
Robert Jördens d1f41b3ad5 int_iir: use taylor for lowpass 2021-01-26 19:19:09 +01:00
Robert Jördens 7b9fc3b2b3 iir_int: move lowpass coefficient calculation to iirstate 2021-01-26 18:51:20 +01:00
Robert Jördens 9b3a47e08b rpll: refine, simplify, document and comment 2021-01-26 18:49:31 +01:00
Robert Jördens ea7b08fc64 rpll: refine 2021-01-26 14:40:44 +01:00
Robert Jördens 16009c3b7e rpll: update lockin integration test 2021-01-25 12:00:47 +01:00
Robert Jördens 9f9744b9e6 rpll: implement 2021-01-25 11:45:59 +01:00
Robert Jördens df337f85b8 reciprocal_pll -> rpll 2021-01-25 09:54:56 +01:00
Robert Jördens 57a5c4ff9b make lockin a unittest, not integration test 2021-01-22 16:04:02 +01:00
Robert Jördens d0d2c6352d lockin: refactor to use common lockin processing 2021-01-22 16:00:05 +01:00
Robert Jördens 0cd2140668 rafactor complex, cossin, atan2 2021-01-21 16:12:59 +01:00
Robert Jördens 948e58c910 lockin: refactor Lockin 2021-01-21 14:57:44 +01:00
Robert Jördens 20488ea3bc lockin: refine 2021-01-19 11:01:21 +01:00
Matt Huszagh 9a3c9afa7e fix reciprocal_pll divide error when reference frequency is 0 2021-01-14 14:51:07 -08:00
Matt Huszagh 9f0b3eb77e fix shift_round overflow error 2021-01-14 14:51:07 -08:00
Matt Huszagh 9697560404 reciprocal_pll: remove unneeded type cast 2021-01-13 09:08:16 -08:00
Matt Huszagh 76088efda5 dsp: add reciprocal_pll 2021-01-13 08:37:33 -08:00
Matt Huszagh 80ed715f5a shift sin/cos before demodulation product to avoid i64 2021-01-12 16:07:04 -08:00
Matt Huszagh 41ea2ebed4 use round up half integer rounding 2021-01-12 15:59:03 -08:00
Matt Huszagh e14aa8b613 move lock-in code to main.rs 2021-01-12 10:45:34 -08:00
Matt Huszagh 891aad3f17 remove debug_assert in divide_round 2021-01-12 07:43:28 -08:00
Matt Huszagh 31d23a3e0c lock-in: use same method for batch_index branching in both instances 2021-01-12 07:36:56 -08:00
Matt Huszagh bae295140d update lock-in for integer math and PLL 2021-01-12 07:36:56 -08:00
Matt Huszagh 13543ce048 pll update input is named "x" not "input" 2021-01-04 11:14:27 -08:00
Robert Jördens cc42c0c477 iir_int: add optimized integer iir implementation 2020-12-22 16:49:12 +01:00
Robert Jördens 8d9af70c19 trig/atan2: refine
* use dynamic scaling of the inputs to get accurate ratios (effectively
  floating point) to maintain accuracy for small arguments
* this also allows shifting later and keep more bits
* use u32 ratio to keep one more bit
* merge the corner case unittests into the big test value list
* print rms, absolute and axis-relative angle
* simplify the correction expression to get rid of one multiplication
* use 5 bit for the correction constant and 15 bits for r
* least squares optimal correction constant, this lowers the max error
  below 5e-5
2020-12-20 21:07:23 +01:00
Robert Jördens 12d5945d81 dsp/testing: simplify 2020-12-20 20:23:32 +01:00
Matt Huszagh 7e794373f4 atan2: fix output range description 2020-12-17 14:21:39 -08:00
Matt Huszagh 17cf71f22b atan2: replace min, max with x, y 2020-12-17 11:39:32 -08:00
Matt Huszagh 9c5e68ceea atan2: test min and max angle inputs 2020-12-17 11:34:39 -08:00
Matt Huszagh 6ffc42021e move atan2 test before cossin test to mimic function order 2020-12-17 10:09:12 -08:00
Matt Huszagh 09a744f59c dsp: move iir generic math functions to top-level module scope 2020-12-17 10:04:48 -08:00
Matt Huszagh 56641d5838 atan2: specify why we cannot use more than 15 bits for the atan argument 2020-12-17 10:02:35 -08:00
Matt Huszagh 1f28949bc5 atan2: store sign bits and greater of |x| and |y| 2020-12-17 09:47:39 -08:00
Matt Huszagh cb38c3e3bd atan2: clarify sharing bits between atan argument and constant factors 2020-12-17 09:31:38 -08:00
Matt Huszagh 5717991ada atan2: result range is from i32::MIN+1 to i32::MAX 2020-12-17 09:31:18 -08:00
Matt Huszagh d7111a3aa8 dsp/trig: let compiler infer type parameter in atan2 abs call 2020-12-17 08:04:53 -08:00
Matt Huszagh d9d500743f simplify atan initial angle expression 2020-12-17 08:02:54 -08:00
Matt Huszagh 85ae70fe62 rename trig tests to delineate between cossin and atan2 2020-12-16 16:28:49 -08:00
Matt Huszagh 7c4f608206 move cossin and atan2 into the same trig file 2020-12-16 16:26:44 -08:00
Matt Huszagh e257545321 fix formatting 2020-12-16 16:14:11 -08:00
Matt Huszagh 5d055b01a0 dsp: add atan2 2020-12-16 16:02:42 -08:00
Matt Huszagh 6d651da758 dsp: add f64 isclose testing function 2020-12-16 16:02:17 -08:00
Matt Huszagh 17f9f0750e dsp: move abs to lib.rs 2020-12-16 16:01:50 -08:00
Matt Huszagh e89db65722 rename trig.rs -> cossin.rs 2020-12-16 15:57:47 -08:00
Robert Jördens 469c89ea70 pll: refine gains 2020-12-14 09:58:27 +01:00
Robert Jördens 75c4120258 cossin: buffer test data output 2020-12-13 13:24:28 +01:00
Robert Jördens 7fa4b76e4d cossin_table: fix build script usage 2020-12-10 17:17:09 +01:00
Robert Jördens 77cb0bbad0 cossin: refactor and tweak
* shrink the LUT by another bit
* correctly use the octant bit to offset the dphi to LUT entry midpoint
* add more diagnistics to the unittest and rewrite it in relative units
* MSB-align phase and output to match the PLL data, dynamic range and
  remove the need for roudning bias.
* clean up the build.rs table generator a bit
2020-12-10 16:56:13 +01:00
Matt Huszagh a82b0f3e90 trig: fix formatting 2020-12-09 15:53:56 -08:00
Matt Huszagh 4add34cf9a add cossin LUT 2020-12-09 15:40:18 -08:00
Robert Jördens 2ae0bdfd8d unwrap: comments, names 2020-12-06 17:07:38 +01:00
Robert Jördens 4cfe6ba416 pll: add note on dithering 2020-12-05 13:18:02 +01:00
Robert Jördens 974fa6e220 unwrap: clean up docs and names 2020-12-05 12:55:22 +01:00
Robert Jördens 526fea8e23 unwrap: more tests 2020-12-05 12:32:27 +01:00
Robert Jördens 941a94bbf6 dsp/pll: style 2020-12-05 11:44:09 +01:00
Robert Jördens 47806a155d
Merge branch 'master' into feature/unwrap 2020-12-05 09:58:15 +01:00
Robert Jördens 2179560a3c unwrap: add phase unwrapping tools 2020-12-05 09:56:41 +01:00
Robert Jördens 628845d356 pll: rename to just PLL 2020-12-05 08:12:07 +01:00
Robert Jördens 0072cda85f pll: add convergence test 2020-12-04 23:13:22 +01:00
Matt Huszagh 43a760e57a dsp testing: improve api for tolerance checking 2020-12-04 09:16:10 -08:00
Matt Huszagh 55e7f1f0db dsp: fix small comment grammar error 2020-12-04 09:16:10 -08:00
Matt Huszagh 0cca4589fd lockin: compute reference period from the closest 2 timestamps to the ADC sample 2020-12-04 09:16:10 -08:00
Matt Huszagh 277a5d2d81 dsp: move common test code to testing.rs file 2020-12-04 09:16:09 -08:00
Matt Huszagh 260206e4f0 dsp: implement Complex as type alias for tuple 2020-12-04 09:15:33 -08:00
Matt Huszagh d1b7efad48 dsp: replace in_phase and quadrature with Complex 2020-12-04 09:15:13 -08:00
Matt Huszagh fcdfcb0be7 lockin: use single iir instance for both in-phase and quadrature signals 2020-12-04 09:14:39 -08:00
Matt Huszagh 785c98f93d lockin: remove TIMESTAMP_BUFFER_SIZE constant 2020-12-04 09:14:39 -08:00
Matt Huszagh 90ef9f1e6a lockin: borrow adc samples and timestamps as slices 2020-12-04 09:14:39 -08:00
Matt Huszagh f259d6cf65 lockin: minor variable name changes 2020-12-04 09:14:39 -08:00
Matt Huszagh 9592bb74a7 lockin: change zip order in decimate for clarity 2020-12-04 09:14:39 -08:00
Matt Huszagh 4edda09d86 lockin: change demodulate to return result instead of option 2020-12-04 09:14:39 -08:00
Matt Huszagh da4430e912 lockin: add documentation explaining timestamp decrement 2020-12-04 09:14:39 -08:00
Matt Huszagh 3c4e83bf0f lockin: move fifo trait before use
This clarifies what it means to "push" to an array.
2020-12-04 09:14:39 -08:00
Matt Huszagh 85adc8b1e1 add lockin module 2020-12-04 09:14:37 -08:00
Robert Jördens 644d85c115 pll: init 2020-12-04 10:53:36 +01:00
Robert Jördens 74349e5d68 iir: more generic math helpers, use core::intrinsics 2020-11-27 10:36:30 +01:00
Robert Jördens ea3e343c39 cargo fmt [nfc] 2020-11-26 14:30:09 +01:00
Robert Jördens 468929690d iir: vminnm/vmaxnm 2020-11-26 14:26:44 +01:00
Robert Jördens cc64f47004 iir: fmt [nfc] 2020-11-25 18:55:07 +01:00
Robert Jördens 38dfd48c14 iir: fix comment [nfc] 2020-11-25 17:57:24 +01:00
Robert Jördens d9e4f6a052 iir: copy_within is better than rotate_right 2020-11-25 17:24:49 +01:00
Robert Jördens 6808d32e0f iir: document 2020-11-23 08:49:30 +01:00
Matt Huszagh 3eb43c6b99 move iir to new dsp crate 2020-11-22 07:59:12 -08:00