______________________________________

Recap: message in CAN protocol
  ↓ 11b     ↓ 64b (8 bytes)
+----+-----------------+ - - -
| id |      body       | don’t care
+----+-----------------+ - - -

______________________________________

OBUS-messageformat

ID:
b bb bbbbbbbb
|  |     ↓
|  ↓     module-ID: 2⁸=256
↓  type: 2²=4
priority?

    type:
    - 0 controller
        module-ID is type of message
    - 1 puzzel
    - 2 needy
    - 3 reserved for future use

Payload:
[ B B B B  B B B B ]
  -
  ↓
 type (per module type)

- - - - - - - - - - - - - - - - - - -

Types for controller:

    - 0 acknowledge valid message
      [ X B B B  B B B B ]
          --------------
             reserved

    - 1 hello
      [ X B B B  B B B B ]
          --------------
             reserved

    - 2 game start
      [ X B B B  B B B B ]
          -------- - ---
         time left ↓ reserved
                #strikes

    - 3 state (every x ms – e.g. in the middle of each second)
      [ X B B B  B B B B ]
          -------- - - -
         time left ↓ ↓ reserved
            #strikes #max strikes

    - 4-6 solved, timeout, strikeout
      [ X B B B  B B B B ]
          -------- - - -
          end time ↓ ↓ reserved
            #strikes #max strikes

    - 7-255 reserved

- - - - - - - - - - - - - - - - - - -

Types for modules:

    - 0 hanlo
      [ X B B B  B B B B ]
          --------------
             reserved

    - 1 strike
      [ X B B B  B B B B ]
          --------------
             reserved

    - 2 solved (not for needy modules)
      [ X B B B  B B B B ]
          --------------
             reserved