Date: Mon, 19 Jan 2015 16:08:25 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 196897] [ucom] [PATCH] Pulse capturing support (PPS) for ucom(4) driver Message-ID: <bug-196897-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196897 Bug ID: 196897 Summary: [ucom] [PATCH] Pulse capturing support (PPS) for ucom(4) driver Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: takeharu1219@ybb.ne.jp Created attachment 151857 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=151857&action=edit Patch for adding pps function to ucom(4) driver Hi, I wrote a patch to add pluse capturing support function to the ucom diver. This can be used to set up a stratum 1 NTP servers using a PPS1 USB GPS device (e.g. Navisys GR-701W). I've tested this patch with Navisys GR-701W and ntpd in ntp-4.2.8p1b5. -- example result of ntpq -p -c kern pll offset: 24.0225 pll frequency: 1.66617 maximum error: 0.423459 estimated error: 0.029453 kernel status: pll ppssignal nano pll time constant: 8 precision: 1e-06 frequency tolerance: 495.911 pps frequency: 6.8631 pps stability: 57.1917 pps jitter: 0.909 calibration interval 256 calibration cycles: 59 jitter exceeded: 122 stability exceeded: 3 -- How-To-Repeat: Apply the patch: cd /usr/src patch -p0 < freebsd-pps-ucom-20150119.patch Build the kernel module: cd /usr/src/sys/modules/usb/ucom make && make install -- You are receiving this mail because: You are the assignee for the bug.
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