Commit Graph

111 Commits

Author SHA1 Message Date
Robert Jördens 43342cef91 rpll: docs 2021-01-31 18:21:47 +01:00
Robert Jördens d281783f2e rpll: reduce code 2021-01-31 18:10:13 +01:00
Robert Jördens 82c8fa1a07 rpll: extend tests 2021-01-31 17:10:03 +01:00
Robert Jördens ab20d67a07 rpll: remove redundant time tracking 2021-01-31 13:42:15 +01:00
Robert Jördens 6b2d8169f0 rpll: more/cleaner tests 2021-01-31 13:25:01 +01:00
Robert Jördens be7aad1b81 rpll: add unittest 2021-01-30 20:49:31 +01:00
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 eea5033d36 dsp bench: fix 2021-01-22 11:38:38 +01:00
Robert Jördens 0cd2140668 rafactor complex, cossin, atan2 2021-01-21 16:12:59 +01:00
Robert Jördens cb280c3303 lockin integration: reduce and refactor further 2021-01-21 15:01:17 +01:00
Robert Jördens 948e58c910 lockin: refactor Lockin 2021-01-21 14:57:44 +01:00
Robert Jördens c078de05cc lockin: fix adc value conversion 2021-01-20 15:31:46 +01:00
Robert Jördens 778f4ac4d5 lockin: wrapping_neg 2021-01-19 11:30:12 +01:00
Robert Jördens 20488ea3bc lockin: refine 2021-01-19 11:01:21 +01:00
Matt Huszagh 73ffc873cd add lock-in integration test 2021-01-14 15:31:40 -08:00
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 3125365a15 add atan2 host benchmark 2020-12-17 14:01:57 -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