This patch introduces a new ts2phc source using a PHC device. There
are multiple use cases for such a master. By connecting pins of two
or more separate PHC devices together, one may act as the source, and
the others may be synchronized to it in hardware. In this way, "just
a bunch of devices"
Signed-off-by: Richard Cochran
---
ts2phc.8 | 217 +++
1 file changed, 217 insertions(+)
create mode 100644 ts2phc.8
diff --git a/ts2phc.8 b/ts2phc.8
new file mode 100644
index 000..07a4026
--- /dev/null
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Some PTP Hardware Clocks have input pins that can generate time stamps
on the edges of external signals. This functionality can be used in
various ways. For example, one can synchronize a PHC device to a
global time source by taking a Pulse Per Second signal from the source
into the PHC. This
There are several issues surrounding leap seconds that emerge when a clock
takes on the Grand Master role. One of them is the fact that GPS radios
provide time of day in the UTC time scale and not in TAI, and they do not,
in general, provide any conversion information. Another issue is the
This series adds support for substantial new features.
1. Using a 1-PPS signal from a GPS in order to become a Grand Master
from a high quality, globally traceable time source.
2. Using a heterogeneous group of PHC cards wired together via their
auxiliary pins to form a Transparent Clock
Many GPS radios provide both a 1-PPS and time of day information via
NMEA sentences. This patch introduces a ts2phc master that decodes
the "recommended minimum data" sentence, RMC, which provides UTC time
and a validity flag. Together with the file based leap second table,
this sentence
On 5/1/2020 12:05 PM, Richard Cochran wrote:
> This series adds support for substantial new features.
>
> 1. Using a 1-PPS signal from a GPS in order to become a Grand Master
>from a high quality, globally traceable time source.
>
> 2. Using a heterogeneous group of PHC cards wired
