Hesai PandarQT - PTP Protocol Fields

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c. LinuxPTP TLV TIME_STATUS_NP (0xc000)
Field
Length
Description
master_offset
8 bytes
Time difference between master and slave at the last handshake, in units of ns
ingress_time
8 bytes
Hardware ingress time stamp of the last sync message received by the slave
cumulativeScaledRateOffset
4 bytes
Relative information in the last received follow_up message
scaledLastGmPhaseChange
4 bytes
Relative information in the last received follow_up message
gmTimeBaseIndicator
2 bytes
Relative information in the last received follow_up message
lastGmPhaseChange
10 bytes
Relative information in the last received follow_up message
gmPresent
4 bytes
Whether grandmaster is present
gmIdentity
8 bytes
Grandmaster identity when gmPresent is 1
d. LinuxPTP TLV GRANDMASTER_SETTINGS_NP (0xc001)
Field
Length
Description
clockQuality
4 bytes
Clock quality of the current grandmaster clock selected by the slave
utc_offset
2 bytes
UTC_Offset value set by the grandmaster clock
time_flags
1 byte
Time flag of the grandmaster
time_source
1 byte
Time source of the grandmaster