Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch

[Gary E. Miller]

Yo Chris!

> Lets check that your SHM works:
> 
> # gpsd -nND 4 /dev/ttyS0 |& fgrep SHM
> gpsd:PROG: shmget(0x47505344, 9008, 0666) for SHM export succeeded
> gpsd:PROG: shmat() for SHM export succeeded, segment 262152

A better test for SHM:

 # gpsd -nND 4 /dev/ttyS0 |& fgrep -i SHM
gpsd:PROG: NTP: shmat(0,0,0) succeeded, segment 0
gpsd:PROG: NTP: shmat(32769,0,0) succeeded, segment 1
gpsd:PROG: NTP: shmat(65538,0,0) succeeded, segment 2
gpsd:PROG: NTP: shmat(98307,0,0) succeeded, segment 3
gpsd:PROG: NTP: shmat(131076,0,0) succeeded, segment 4
gpsd:PROG: NTP: shmat(163845,0,0) succeeded, segment 5
gpsd:PROG: NTP: shmat(196614,0,0) succeeded, segment 6
gpsd:PROG: NTP: shmat(229383,0,0) succeeded, segment 7
gpsd:PROG: shmget(0x47505344, 9008, 0666) for SHM export succeeded
gpsd:PROG: shmat() for SHM export succeeded, segment 262152
gpsd:INFO: PPS:/dev/ttyS0 ntpshm_link_activate: 1




RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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    "If you can’t measure it, you can’t improve it." - Lord Kelvin

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