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
73ffc873cd
add lock-in integration test
2021-01-14 15:31:40 -08:00
9a3c9afa7e
fix reciprocal_pll divide error when reference frequency is 0
2021-01-14 14:51:07 -08:00
9f0b3eb77e
fix shift_round overflow error
2021-01-14 14:51:07 -08:00
9697560404
reciprocal_pll: remove unneeded type cast
2021-01-13 09:08:16 -08:00
76088efda5
dsp: add reciprocal_pll
2021-01-13 08:37:33 -08:00
80ed715f5a
shift sin/cos before demodulation product to avoid i64
2021-01-12 16:07:04 -08:00
41ea2ebed4
use round up half integer rounding
2021-01-12 15:59:03 -08:00
e14aa8b613
move lock-in code to main.rs
2021-01-12 10:45:34 -08:00
891aad3f17
remove debug_assert in divide_round
2021-01-12 07:43:28 -08:00
31d23a3e0c
lock-in: use same method for batch_index branching in both instances
2021-01-12 07:36:56 -08:00
bae295140d
update lock-in for integer math and PLL
2021-01-12 07:36:56 -08:00
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
7e794373f4
atan2: fix output range description
2020-12-17 14:21:39 -08:00
3125365a15
add atan2 host benchmark
2020-12-17 14:01:57 -08:00
17cf71f22b
atan2: replace min, max with x, y
2020-12-17 11:39:32 -08:00
9c5e68ceea
atan2: test min and max angle inputs
2020-12-17 11:34:39 -08:00
6ffc42021e
move atan2 test before cossin test to mimic function order
2020-12-17 10:09:12 -08:00
09a744f59c
dsp: move iir generic math functions to top-level module scope
2020-12-17 10:04:48 -08:00
56641d5838
atan2: specify why we cannot use more than 15 bits for the atan argument
2020-12-17 10:02:35 -08:00
1f28949bc5
atan2: store sign bits and greater of |x| and |y|
2020-12-17 09:47:39 -08:00
cb38c3e3bd
atan2: clarify sharing bits between atan argument and constant factors
2020-12-17 09:31:38 -08:00
5717991ada
atan2: result range is from i32::MIN+1 to i32::MAX
2020-12-17 09:31:18 -08:00
d7111a3aa8
dsp/trig: let compiler infer type parameter in atan2 abs call
2020-12-17 08:04:53 -08:00
d9d500743f
simplify atan initial angle expression
2020-12-17 08:02:54 -08:00
2ddaab8fae
dsp: fix bench import path
2020-12-16 16:57:18 -08:00
85ae70fe62
rename trig tests to delineate between cossin and atan2
2020-12-16 16:28:49 -08:00
7c4f608206
move cossin and atan2 into the same trig file
2020-12-16 16:26:44 -08:00
e257545321
fix formatting
2020-12-16 16:14:11 -08:00
Robert Jördens
Matt Huszagh