gpsd:RAW: PPS:/dev/pps0 Assert pps-detect invisible pulse

[Michael Byczkowski]

Since at least the latest git version of gpsd, I’m seeing invisible PPS pulse log entries in ntp.log (those weren’t there before):

Oct  2 11:57:43 rasputin2 gpsd[452]: gpsd:RAW: PPS:/dev/pps0 Assert pps-detect invisible pulse

Oct  2 11:57:43 rasputin2 gpsd[452]: gpsd:PROG: PPS:/dev/pps0 Assert cycle: 1000000, duration: 0 @  1633168663.008016214

Oct  2 11:57:43 rasputin2 gpsd[452]: gpsd:RAW: PPS:/dev/pps0 Assert categorized invisible pulse

Oct  2 11:57:43 rasputin2 gpsd[452]: gpsd:INFO: PPS:/dev/pps0 Assert hooks called clock:  1633168663.008016214 real:  1633168663.000000000: accepted

Oct  2 11:57:43 rasputin2 gpsd[452]: gpsd:PROG: PPS:/dev/pps0 Assert accepted @  1633168663.008016214 offset -0.008016214

Oct  2 11:57:44 rasputin2 gpsd[452]: gpsd:PROG: KPPS:/dev/pps0 assert  1633168664.008016111, sequence: 221, clear   0.000000000, sequence: 0 - using: assert

Oct  2 11:57:44 rasputin2 gpsd[452]: gpsd:PROG: KPPS:/dev/pps0 Assert cycle: 999999, duration: 0 @  1633168664.008016111

Oct  2 11:57:44 rasputin2 gpsd[452]: gpsd:RAW: PPS:/dev/pps0 Assert pps-detect invisible pulse

Oct  2 11:57:44 rasputin2 gpsd[452]: gpsd:PROG: PPS:/dev/pps0 Assert cycle: 999999, duration: 0 @  1633168664.008016111

Oct  2 11:57:44 rasputin2 gpsd[452]: gpsd:RAW: PPS:/dev/pps0 Assert categorized invisible pulse

I’m running the latest gpsd from git on my Raspberry Pi 4 with Raspbian/Debian Bullseye and the latest beta firmware, kernel 5.10.63-v8+ on aarch64, and a u-blox ZED-F9P in RTCM3 mode.

Thanks for your help and best regards,

Michael