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→Source & Destination Identifiers
When a flight stack is constructed and assembled, it ends up being comprised of a series of boards each with one of these unique, enumerated identifiers. It should be noted that a flight stack '''cannot exceed''' 15 boards total (3U). Upon boot-up, the Avionics receives a variety of messages from STINGR identifying all boards in the flight stack, and re-labels the identifiers to the '''Flight Stack Identifiers''' (FSI) format, whereby all 8-bit identifiers are re-categorized and re-assigned into 4-bit stack-relative addresses.
When a flight stack is constructed and assembled, it ends up being comprised of a series of boards each with one of these unique, enumerated identifiers. It should be noted that a flight stack '''cannot exceed''' 15 boards total (3U). Upon boot-up, the Avionics receives a variety of messages from STINGR identifying all boards in the flight stack, and re-labels the identifiers to the '''Flight Stack Identifiers''' (FSI) format, whereby all 8-bit identifiers are re-categorized and re-assigned into 4-bit stack-relative addresses.
As of August 10th, 2017, HONEY boards now also have an associated Board Serial Number (BSN). This number starts at 0 for the first of a given board to be made, and increases by one for each additional version of the same board made. The BSN was introduced to allow multiple versions of the same board to exist in the same flight stack -- IE, having two Cobra's in a stack would not permit a unique identifier for each, as their ABI is the same. By adding a BSN, the ABI and BSN are enough to uniquely identify each board in the stack.
'''Boards designed & fabricated prior to August 10, 2017, do not have a BSN. This includes The Count, Biscuit, and Macaw. For The Count and Biscuit, this is OK -- as there cannot be more than one BMS or Avionics in a flight stack. Macaw has no BSN, and only one Macaw can be flown in a flight stack.'''
More details about the re-assignment process can be found in the operations section of STINGR, below on this page.
More details about the re-assignment process can be found in the operations section of STINGR, below on this page.
The following are the current ABI's, as of writing (June 28, 2017).
The following are the current ABI's, as of August 10, 2017).
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