# gpsd -N -n -D 6 /dev/ttyS0 |& fgrep PPS gpsd:PROG: PPS:/dev/ttyS0 chrony socket /run/chrony.ttyS0.sock doesn't exist gpsd:PROG: KPPS:/dev/ttyS0 checking /sys/devices/virtual/pps/pps0/path, /dev/ttyS0 gpsd:INFO: KPPS:/dev/ttyS0 RFC2783 path:/dev/pps0, fd is 7 gpsd:INFO: KPPS:/dev/ttyS0 pps_caps 0x1133 gpsd:INFO: KPPS:/dev/ttyS0 have PPS_CANWAIT gpsd:INFO: KPPS:/dev/ttyS0 kernel PPS will be used gpsd:PROG: PPS:/dev/ttyS0 thread launched gpsd:INFO: PPS:/dev/ttyS0 ntpshm_link_activate: 1 gpsd:INFO: KPPS:/dev/ttyS0 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/ttyS0 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/ttyS0 kernel PPS timeout unknown error gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005287.000179603, sequence: 1, clear 0.000000000, sequence: 0 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 1607005287000179, duration: 0 @ 1607005287.000179603 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 1607005287000179, duration: 0 @ 1607005287.000179603 gpsd:PROG: PPS:/dev/ttyS0 Assert ignored Too long for 0.5Hz gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005287.000179603, sequence: 1, clear 1607005287.100169584, sequence: 1 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 99989, duration: 99989 @ 1607005287.100169584 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 99989, duration: 99989 @ 1607005287.100169584 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored Too short for 5Hz gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005288.000182330, sequence: 2, clear 1607005287.100169584, sequence: 1 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 1000002, duration: 900012 @ 1607005288.000182330 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 1000002, duration: 900012 @ 1607005288.000182330 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005288.000182330 real: 1607005288.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005288.000182330 offset -0.000182330 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005288.000182330, sequence: 2, clear 1607005288.100189354, sequence: 2 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 1000019, duration: 100007 @ 1607005288.100189354 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 1000019, duration: 100007 @ 1607005288.100189354 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005289.000167045, sequence: 3, clear 1607005288.100189354, sequence: 2 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 999984, duration: 899977 @ 1607005289.000167045 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 999984, duration: 899977 @ 1607005289.000167045 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005289.000167045 real: 1607005289.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005289.000167045 offset -0.000167045 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005289.000167045, sequence: 3, clear 1607005289.100191032, sequence: 3 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 1000001, duration: 100023 @ 1607005289.100191032 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 1000001, duration: 100023 @ 1607005289.100191032 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005290.000187684, sequence: 4, clear 1607005289.100191032, sequence: 3 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 1000020, duration: 899996 @ 1607005290.000187684 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 1000020, duration: 899996 @ 1607005290.000187684 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005290.000187684 real: 1607005290.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005290.000187684 offset -0.000187684 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005290.000187684, sequence: 4, clear 1607005290.100159627, sequence: 4 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 999968, duration: 99971 @ 1607005290.100159627 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 999968, duration: 99971 @ 1607005290.100159627 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005291.000182927, sequence: 5, clear 1607005290.100159627, sequence: 4 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 999995, duration: 900023 @ 1607005291.000182927 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 999995, duration: 900023 @ 1607005291.000182927 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005291.000182927 real: 1607005291.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005291.000182927 offset -0.000182927 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005291.000182927, sequence: 5, clear 1607005291.100159532, sequence: 5 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 999999, duration: 99976 @ 1607005291.100159532 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 999999, duration: 99976 @ 1607005291.100159532 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005292.000170928, sequence: 6, clear 1607005291.100159532, sequence: 5 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 999988, duration: 900011 @ 1607005292.000170928 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 999988, duration: 900011 @ 1607005292.000170928 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005292.000170928 real: 1607005292.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005292.000170928 offset -0.000170928 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005292.000170928, sequence: 6, clear 1607005292.100159567, sequence: 6 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 1000000, duration: 99988 @ 1607005292.100159567 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 1000000, duration: 99988 @ 1607005292.100159567 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005293.000177112, sequence: 7, clear 1607005292.100159567, sequence: 6 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 1000006, duration: 900017 @ 1607005293.000177112 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 1000006, duration: 900017 @ 1607005293.000177112 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005293.000177112 real: 1607005293.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005293.000177112 offset -0.000177112 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005293.000177112, sequence: 7, clear 1607005293.100159555, sequence: 7 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 999999, duration: 99982 @ 1607005293.100159555 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 999999, duration: 99982 @ 1607005293.100159555 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005294.000156294, sequence: 8, clear 1607005293.100159555, sequence: 7 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 999979, duration: 899996 @ 1607005294.000156294 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 999979, duration: 899996 @ 1607005294.000156294 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005294.000156294 real: 1607005294.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005294.000156294 offset -0.000156294 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005294.000156294, sequence: 8, clear 1607005294.100191553, sequence: 8 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 1000031, duration: 100035 @ 1607005294.100191553 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 1000031, duration: 100035 @ 1607005294.100191553 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005295.000173874, sequence: 9, clear 1607005294.100191553, sequence: 8 - using: assert gpsd:PROG: KPPS:/dev/ttyS0 Assert cycle: 1000017, duration: 899982 @ 1607005295.000173874 gpsd:PROG: PPS:/dev/ttyS0 Assert cycle: 1000017, duration: 899982 @ 1607005295.000173874 gpsd:INFO: PPS:/dev/ttyS0 Assert hooks called clock: 1607005295.000173874 real: 1607005295.000000000: no fix gpsd:PROG: PPS:/dev/ttyS0 Assert no fix @ 1607005295.000173874 offset -0.000173874 gpsd:PROG: KPPS:/dev/ttyS0 assert 1607005295.000173874, sequence: 9, clear 1607005295.100191263, sequence: 9 - using: clear gpsd:PROG: KPPS:/dev/ttyS0 Clear cycle: 999999, duration: 100017 @ 1607005295.100191263 gpsd:PROG: PPS:/dev/ttyS0 Clear cycle: 999999, duration: 100017 @ 1607005295.100191263 gpsd:PROG: PPS:/dev/ttyS0 Clear ignored 1Hz trailing edge