Re: Any nice example of chrony, WWVB, Raspberry Pi ?
Mike Collins <mocallins-/[email protected]> Mon, 21 Oct 2024 19:14:23 +0000 (UTC)
| Newsgroups | gmane.comp.time.chrony.user |
|---|---|
| Message-ID | <[email protected]> |
Finally getting some results but will probably need some expertise on how to calculate the offseet /delay . My problem was a little bit self inflicted.When i wired the antenna to the Raspberry Pi, i just picked some gpio pins that were somwhat close together, just to ease assdembly.However i ended up using the ic2 pins, and even though i disabled i2c in raspi-config, there still seemed to be some signals coming out of them.So i moved the 2 pins on the antenna board to other gpio pins, 17 and 27 which were still close to the ground pin i used, so easy enough to keep track of. I don't know if i need to make adjustments or not, but there's what i'm seeing, any help would be appreciated. [piclock]:</home/pi/> chronyc sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== #* PPS 9 4 377 22 +21ms[ +77ms] +/- 1815us #? GPS 0 4 0 - +0ns[ +0ns] +/- 0ns [piclock]:</home/pi/> chronyc sourcestats Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev ============================================================================== PPS 6 3 77 +1999.734 5613.035 +1966us 36ms GPS 0 0 0 +0.000 2000.000 +0ns 4000ms [piclock]:</home/pi/>