Identification Pattern:
A 64-bit (8 octet) pattern used to identify the file as a snoop packet capture file. The Identification Pattern
consists of the 8 hexadecimal octets:
62 74 73 6E 6F 6F 70 00
This is the ASCII string "btsnoop" followed by one null octets.
Version Number:
A 32-bit (4 octet) unsigned integer value representing the version of the packet capture file being used. This
document describes version number 1.
Datalink Type:
A 32-bit (4 octet) field identifying the type of datalink header used in the packet records that follow. The
datalink type codes are listed in the table below. Values 0 - 1000 are reserved, to maximize compatibility with
the RFC1761 snoop version 2 format.
Datalink Type
Code
Reserved
0 - 1000
Un-encapsulated HCI (H1) 1001
HCI UART (H4)
1002
HCI BSCP
1003
HCI Serial (H5)
1004
Unassigned
1005 - 4294967295
Table 7.1 - Datalink Codes
Packet Record Format
Each packet record holds a partial or complete copy of one packet as well as some descriptive information
about that packet. The packet may be truncated in order to limit the amount of data to be stored in the packet
file.
Each packet record holds 24 octets of descriptive information about the packet, followed by the packet data,
which is variable-length, and an optional pad field. The descriptive information is structured as six 32-bit (4-
octet) integer values.
The structure of the packet record is as follows:
Original Length
Chapter 7 General Information
TELEDYNE LECROY
Frontline BPA low energy Hardware & Software User Manual
186
Summary of Contents for BPA LOW ENERGY
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