[gpsd-users] gpsd:WARN: PPS TIOCMIWAIT returns unchanged state, ppsmonitor sleeps 10

[folkert]

Hi,

I'm trying to sync a pc via gpsd and ntpd.
I noticed that the nmea stream is processed correctly but pps does not
work at all.
So I invoked gpsd with "-n -N -D 255" and saw this:

gpsd:PROG: KPPS assert 1372687478.817955292, sequence: 105 - clear  
1372687477.917954360, sequence: 104
gpsd:PROG: KPPS data: using assert
gpsd:INFO: KPPS cycle: 1000019, duration:  900001 @ 1372687478.817955292
gpsd:PROG: KPPS assert 1372687478.817955292, sequence: 105 - clear  
1372687478.917956736, sequence: 105
gpsd:PROG: KPPS data: using clear
gpsd:INFO: KPPS cycle: 1000002, duration:  100001 @ 1372687478.917956736
gpsd:PROG: KPPS assert 1372687479.817934609, sequence: 106 - clear  
1372687478.917956736, sequence: 105
gpsd:PROG: KPPS data: using assert
gpsd:INFO: KPPS cycle:  999980, duration:  899978 @ 1372687479.817934609
gpsd:PROG: KPPS assert 1372687479.817934609, sequence: 106 - clear  
1372687479.917950586, sequence: 106
gpsd:PROG: KPPS data: using clear
gpsd:INFO: KPPS cycle:  999994, duration:  100015 @ 1372687479.917950586
gpsd:DATA: packet from /dev/ttyS1 with 
{ONLINE|TIME|LATLON|SPEED|TRACK|MODE|PACKET|CLEAR|PPSTIME}
gpsd:DATA: packet from /dev/ttyS1 with 
{ONLINE|TIME|LATLON|ALTITUDE|STATUS|MODE|PACKET|PPSTIME}
gpsd:DATA: packet from /dev/ttyS1 with 
{ONLINE|TIME|LATLON|STATUS|PACKET|REPORT|PPSTIME}
gpsd:PROG: KPPS assert 1372687480.817949304, sequence: 107 - clear  
1372687479.917950586, sequence: 106
gpsd:PROG: KPPS data: using assert
gpsd:INFO: KPPS cycle: 1000014, duration:  899999 @ 1372687480.817949304
gpsd:PROG: KPPS assert 1372687480.817949304, sequence: 107 - clear  
1372687480.917933407, sequence: 107
gpsd:PROG: KPPS data: using clear
gpsd:INFO: KPPS cycle:  999983, duration:   99984 @ 1372687480.917933407
gpsd:WARN: PPS TIOCMIWAIT returns unchanged state, ppsmonitor sleeps 10

So clearly the PPS signal comes in but for some reason gpsd decides to sleep 10 
seconds?
Why on earth is it doing that?


Regards,

Folkert van Heusden

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