User`s guide

RN-WIFLYCR-UG
www.rovingnetworks.com Version 1.2r 4/30/13 page 69
3.9 TIME STAMPING PACKETS
You can use the time stamping feature to append 8 bytes to a TCP or UDP packet auto-
matically. The set ip flags 0x87 command enables the time stamp and keeps other
default settings). The time stamp bits from MSB to LSB are:
The 8 bytes represents the 64-bit raw value of the real-time clock register. The data is
appended before calculating the TCP checksum so that the data passes through the
TCP stack correctly. This register counts at 32,768 Hz. If the timeserver function is
enabled, the RTC should accurately reflect the real time. This register also counts when
the module is in sleep mode.
User’s TCP or UDP packet data 63..56 55..48 47..40 39..32 31..24 23..16 15..8 7..0