[ntp:questions] Re: Please demistify the SHM driver
ptrojane at mion.elka.pw.edu.pl
Tue Sep 16 06:37:23 UTC 2003
In article <bk5cj3$1h5$1 at news.univ-mrs.fr>, Jerome Oufella wrote:
>What value(s) should I set, while my GPS clock only sends me the
>following values :
> - Day
> - Month
> - Year
> - Hour (local time)
> - Minutes
> - Seconds
>Once every minute. I use them to build a UNIX time_t. Should it be
>stored in clockTimeStampSec or receiveTimeStampSec ?
you can set VMIN and VTIME fields of `struct termios` to
do blocking read(). When it returns, you catch gettimeofday()
'as soon as possible', then finishes decoding serial data.
receiveTimeStamp is that from gettimeofday(), and clockTimeStamp
is that from serial data.
>What about leap & precision ?
if you can't guess them from serial data, use values on which NTP
will not complain:)
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