Nu visar tidsignalmetoden -10 ppb och ntp+pythonscripmetoden -9 ppb (-10.2 och -8.6) jämfört med i går när jag startade "pwm-programmet".
signal.png
Tidssignalen och klockpulsen som kommer drygt 20 ms före. Skriptmetoden låter förstå att skilnaden skulle var mindre, men det finns fördröjningar där.
Litet data från senaste skriptsampling, som också råkar visa byte av Ageing Offset in action.
Kod: Markera allt
rvl@EB56:~/kod/py/egi$ ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
ntp.dnainternet .POOL. 16 p - 64 0 0.000 0.000 0.000
0.fi.pool.ntp.o .POOL. 16 p - 64 0 0.000 0.000 0.000
-ntp2.dnainterne 62.237.86.234 2 u 2 512 377 11.557 0.774 1.952
*ntp3.dnainterne 193.66.253.98 2 u 84 512 377 9.589 0.312 0.802
+ntp1.dnainterne 193.66.253.102 2 u 195 512 377 9.530 0.650 0.439
+lagoon.nisc.inf 95.216.71.38 3 u 244 512 377 10.368 0.264 0.573
-tick.katterno.f 192.168.52.42 2 u 200 512 377 15.039 0.012 1.241
-tock.katterno.f 193.11.166.18 2 u 57 512 377 16.579 0.953 2.436
+ardbeg.gw.com 192.36.144.23 2 u 174 512 377 10.356 0.505 0.386
-ukk0.internatio 189.141.160.61 2 u 208 512 377 8.634 -0.461 0.990
rvl@EB56:~/kod/py/egi$ ntptime
ntp_gettime() returns code 0 (OK)
time e0388294.2623bff8 Sun, Mar 17 2019 10:23:48.148, (.148983892),
maximum error 76481 us, estimated error 380 us, TAI offset 37
ntp_adjtime() returns code 0 (OK)
modes 0x0 (),
offset 385.326 us, frequency 22.642 ppm, interval 1 s,
maximum error 76481 us, estimated error 380 us,
status 0x2001 (PLL,NANO),
time constant 9, precision 0.001 us, tolerance 500 ppm,
rvl@EB56:~/kod/py/egi$ python3 sertest2.py 1552749667.9903212 1552750056.9903197 1552752942.9902887 1552754537.9902184 1552755992.9898434 1552760287.9904182 1552766792.990618 1552782547.9906676 1552783006.990334 1552803963.9909348 1552804663.9905202 1552805013.9904478 1552805433.9903471 1552807222.990114
offset 381.767 us, frequency 22.642 ppm, interval 1 s,
offset 376.214 us, frequency 22.642 ppm, interval 1 s,
connected to: /dev/ttyACM3
1552811083.9934025 : *
1552811083.993575 : 10:24:44
1552811084.9928823 : *
1552811084.9930346 : 10:24:45
1552811085.9923272 : *
1552811085.9924607 : 10:24:46
1552811086.9918187 : *
1552811086.9919524 : 10:24:47
1552811087.9912853 : *
1552811087.99139 : 10:241552811087.995293 : :48
1552811088.9906647 : *
1552811088.9947968 : 10:24:49
1552811089.9942799 : *
1552811089.994428 : 10:24:50
1552811090.9937325 : *
1552811090.9938624 : 10:24:51
1552811091.9932108 : *
1552811091.9933662 : 10:24:52
1552811092.9926853 : *
1552811092.9928222 : 10:24:53
1552811093.9921758 : *
1552811093.9923215 : 10:24:54
1552811094.991659 : *
1552811094.9918594 : 10:24:55
1552811095.9910665 : *
1552811095.991149 : 101552811095.9951913 : :24:56
1552811096.9905138 : *1552811096.9946547 :
1552811096.994765 : 10:24:57
1552811097.994149 : *
1552811097.9942975 : 10:24:58
1552811098.993626 : *
1552811098.9937727 : 10:24:59
1552811099.9933176 : *
1552811099.9934635 : 10:25:00
1552811099.9936512 : 2019-03-17 25.00°C
1552811099.993747 : The Ag1552811099.997451 : eing Offset is set as: -22
1552811100.9925745 : *
1552811100.9927204 : 10:25:01
1552811101.9920433 : *
1552811101.9921901 : 10:25:02
1552811102.991519 : *
1552811102.9916651 : 10:25:03
1552811103.9909353 : *
1552811103.9951036 : 10:25:04
1552811104.994556 : *
1552811104.9946856 : 10:25:05
1552811105.994038 : *
1552811105.9941883 : 10:25:06
1552811106.993502 : *
1552811106.9936311 : 10:25:07
1552811107.9929855 : *
1552811107.9931571 : 10:25:08
1552811108.992459 : *
1552811108.9926116 : 10:25:09
1552811109.9919188 : *
1552811109.992049 : 10:25:10
1552811110.9913905 : *
1552811110.9953787 : 10:25:11
1552811111.9908051 : *
1552811111.9949822 : 10:25:12
1552811112.9944463 : *
1552811112.9945729 : 10:25:13
1552811113.9939275 : *
1552811113.9940453 : 10:25:14
1552811114.993402 : *
1552811114.9935274 : 10:25:15
1552811115.992868 : *
1552811115.9929936 : 10:25:16
1552811116.9923406 : *
1552811116.9924667 : 10:25:17
1552811117.9918036 : *
1552811117.9919312 : 10:25:18
1552811118.9912562 : *
1552811118.9913716 : 10:25:1552811118.995309 : 19
1552811119.9906814 : *
1552811119.9948795 : 10:25:20
1552811120.9943314 : *
1552811120.9944584 : 10:25:21
1552811121.9937897 : *
1552811121.9939158 : 10:25:22
1552811122.99328 : *
1552811122.9934068 : 10:25:23
1552811123.9927454 : *
1552811123.9928713 : 10:25:24
1552811124.9922183 : *
1552811124.9923475 : 10:25:25
1552811125.9916933 : *
1552811125.9918413 : 10:25:26
1552811126.9911468 : *
1552811126.991256 : 10:21552811126.9952173 : 5:27
1552811127.9946818 : *
1552811127.994808 : 10:25:28
1552811128.9941978 : *
1552811128.994317 : 10:25:29
1552811129.993675 : *
1552811129.9938102 : 10:25:30
1552811130.993145 : *
1552811130.993275 : 10:25:31
1552811131.992591 : *
1552811131.9927342 : 10:25:32
1552811132.9920983 : *
1552811132.992227 : 10:25:33
1552811133.991569 : *
1552811133.9916995 : 10:25:34
1552811134.991003 : *
1552811134.9910824 : 11552811134.9951508 : 0:25:35
1552811135.9946213 : *
1552811135.9947693 : 10:25:36
1552811136.9940746 : *
1552811136.9942055 : 10:25:37
1552811137.9935699 : *
1552811137.9936962 : 10:25:38
1552811138.9930472 : *
1552811138.9931996 : 10:25:39
1552811139.9925148 : *
1552811139.992658 : 10:25:40
1552811140.9919784 : *
1552811140.9921086 : 10:25:41
1552811141.9914637 : *
1552811141.9916117 : 10:25:42
1552811142.9908242 : *
1552811142.9950118 : 10:25:43
1552811143.9945095 : *
1552811143.9946468 : 10:25:44
1552811144.993979 : *
1552811144.9941049 : 10:25:45
1552811145.9934394 : *
1552811145.9935677 : 10:25:46
1552811146.9929223 : *
1552811146.9930506 : 10:25:47
1552811147.9923916 : *
1552811147.9925287 : 10:25:48
1552811148.9918733 : *
1552811148.992 : 10:25:49
1552811149.991335 : *
1552811149.9914446 : 10:25:501552811149.9953423 :
1552811150.990758 : *
1552811150.9949343 : 10:25:51
1552811151.994446 : *
1552811151.9945903 : 10:25:52
1552811152.9938629 : *
1552811152.9939895 : 10:25:53
1552811153.9934115 : *
1552811153.9935606 : 10:25:54
1552811154.9928162 : *
1552811154.992961 : 10:25:55
1552811155.9922931 : *
1552811155.9924324 : 10:25:56
1552811156.9917662 : *
1552811156.991893 : 10:25:57
1552811157.9911911 : *
1552811157.9912827 : 10:251552811157.995324 : :58
1552811158.990636 : *
1552811158.9948125 : 10:25:59
1552811159.9946446 : *
1552811159.9947705 : 10:26:00
1552811159.9949439 : 2019-03-17 25.00°C
1552811159.9951897 : The Ageing Offset is set as: -211552811159.998268 :
1552811160.9937513 : *
1552811160.9938972 : 10:26:01
1552811161.9932508 : *
1552811161.9933798 : 10:26:02
1552811162.9926832 : *
1552811162.9928095 : 10:26:03
1552811163.9922159 : *
1552811163.9923656 : 10:26:04
1552811164.9916494 : *
1552811164.9917946 : 10:26:05
1552811165.991076 : *
1552811165.9911518 : 10:1552811165.9951932 : 26:06
1552811166.9904912 : *1552811166.9946535 :
1552811166.9947643 : 10:26:07
1552811167.9941576 : *
1552811167.9942832 : 10:26:08
1552811168.9936247 : *
1552811168.993751 : 10:26:09
1552811169.9931164 : *
1552811169.9932637 : 10:26:10
1552811170.992575 : *
1552811170.9927223 : 10:26:11
1552811171.992075 : *
1552811171.9922144 : 10:26:12
1552811172.9915264 : *
1552811172.9916534 : 10:26:13
1552811173.9909296 : *
1552811173.9950993 : 10:26:14
1552811174.9945626 : *
1552811174.994691 : 10:26:15
1552811175.9940329 : *
1552811175.9941618 : 10:26:16
1552811176.9935098 : *
1552811176.9936366 : 10:26:17
1552811177.9929936 : *
1552811177.993118 : 10:26:18
1552811178.9924505 : *
1552811178.9925952 : 10:26:19
1552811179.9919355 : *
1552811179.9920847 : 10:26:20
1552811180.9914103 : *
1552811180.995396 : 10:26:21
1552811181.9908733 : *
1552811181.9949872 : 10:26:22
1552811182.9944434 : *
offset 357.408 us, frequency 22.642 ppm, interval 1 s,
offset 352.037 us, frequency 22.642 ppm, interval 1 s,
raw:
1552811166.9904912 @ 2019-03-17 10:26:06
interpolating
1552811166.9908514
-0.008621976216688615 ppm ( 2019-03-16 17:21:07 )
-0.008700268806591109 ppm ( 2019-03-16 17:27:36 )
-0.0096638472321062 ppm ( 2019-03-16 18:15:42 )
-0.011178041647193722 ppm ( 2019-03-16 18:42:17 )
-0.018270086164217617 ppm ( 2019-03-16 19:06:32 )
-0.008514447110576558 ppm ( 2019-03-16 20:18:07 )
-0.005260102485975115 ppm ( 2019-03-16 22:06:32 )
-0.0064230309691679826 ppm ( 2019-03-17 02:29:07 )
-0.018372454088958275 ppm ( 2019-03-17 02:36:46 )
0.01158496510513282 ppm ( 2019-03-17 08:26:03 )
-0.05092471005807625 ppm ( 2019-03-17 08:37:43 )
-0.06560094717042173 ppm ( 2019-03-17 08:43:33 )
-0.08795661092747566 ppm ( 2019-03-17 08:50:33 )
-0.1869747787222544 ppm ( 2019-03-17 09:20:22 )
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