"unruh" <[email protected]> wrote in message
news:[email protected]...
[]
??? the format of pps0 output is nothing like the format of the output
of
the serial port as far as I know.
If you are going to use pps, you have to set up your serial port to run
interrupts and to report those interrupts. On linux, you have to load
the modules pps_core and pps_ldisc and then link the serial port dcd
line to the pps_ldisc using ldattach 18. That creates a pps0 device in
/dev and in /sys/class/pps/pps0/. I suspect similar things are needed in
bsd.
Ie, It is NOT sufficient to simply wire up the sure board, plug it in
and run the atom driver. You also have to tell you system to timestamp
and report its serial line interrupts.
As far as I know, no such steps are needed in FreeBSD 5.4, 8.0 or 8.2. No
need to load any extra modules, just to create a link or two. I did
compile the kernel PPS support, though.
Cheers,
David
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