shift-gnss-time

Type signature: (solution->solution)

Help

Usage:

shift-gnss-time [OPTION]...

Allowed options:

Option	Description
--help	produce help message
--offset OFFSET	add OFFSET to all packets' GNSS times
--start-at START_TIME	offset all packets' GNSS times so that the first packet with GNSS time has it equal to START_TIME
--start-now	--start-at, but calculate START_TIME to be the value sampled from the system's CLOCK_REALTIME clock, sampled at the instant the packet passes through this node, converted from UTC to GNSS time, and snapped to the nearest multiple of SNAP_PERIOD
--start-now-coordinated-via FILENAME	--start-now, but allow for synchronizing multiple shift-gnss-time nodes; synchronization is coordinated via the provided FILENAME, which must initially either not exist or be empty Startup process: 1. The first shift-gnss-time node to start up will atomically write its START_TIME to FILENAME 2. Additional shift-gnss-time nodes will read their START_TIME from FILENAME
--snap-start-time SNAP_PERIOD (=1)	snap START_TIME to the nearest multiple of SNAP_PERIOD (units: seconds); useful for e.g. aligning the second boundaries of stream time to the second boundaries of GNSS time in order to generate a PPS signal aligned to GNSS time * Note: only used for --start-now and --start-now-coordinated-via
--display-offset-relative-to-real-time	display offset of output packet's GNSS time relative to CLOCK_REALTIME (converted from UTC to GNSS time) in console status line (also enables output of "Offset (seconds)/shift-gnss-time packet.time-CLOCK_REALTIME" statlog variable)