[time-nuts] THUNBERBOLT PACKET 0X8F-AB
weyster at cfl.rr.com
Sun Oct 5 19:26:16 UTC 2008
Got it....Found the spec ! Thanks for the hint !
"The bytes in the data string can have any value. To prevent confusion with the frame
sequences <DLE> <ID> and <DLE> <ETX>, every <DLE> byte in the data string is
preceded by an extra <DLE> byte ('stuffing'). These extra <DLE> bytes must be added
('stuffed') before sending a packet and removed after receiving the packet."
----- Original Message -----
To: time-nuts at febo.com
Sent: Sunday, October 05, 2008 3:17 PM
Subject: [time-nuts] THUNBERBOLT PACKET 0X8F-AB
Per your message : That would be the 'byte stuffing' inherent in TSIP packet structure.
Packet 0X8F-AB is specified as being 17 bytes including the subcode ( 8F)
Do you mean that you cant depend on that packet always being 17 bytes ?
I'm getting 18 bytes only when the time has 16 seconds in it. ( the second byte is duplicated )
If you cant depend on having a constant number of bytes ( as defined in the spec ) , how do you then decode it ?
More information about the time-nuts