The driver header is allowing for fragmentation and reassembly of long measurements

Measurement ID

TimeStamp

Fragment Number

Total Fragments

Data Length

Data

where

• Measurement ID (not sure if needed)
  • is a measurement identifier
  • two unsigned bytes
• Fragment Number
  • current fragment number,
  • two unsigned bytes
  • starts at 1
• TimeStamp
  • eight byte integer with the timestamp when the measurement was taken (milliseconds since 1970 or boot time if no real time reference available)
• Total fragments
  • total number of
  • two unsigned bytes
  • zero means infinity fragments (e.g., streaming)
• Data Length
  • length of data field (in bytes)
  • four unsigned bytes
• Data
  • Data being measured
  • Variable length