bms-g3.ksy.yml

meta:
  id: zlog_bms
  title: A parser for Zero motorcycle Gen 3 BMS binary log files
  endian: le
  #bit-endian: le

seq:
  - id: partial #```````````Partial log till next 0xb2 entry  
    terminator: 0xB2
    consume: false # So next stream can read/start from 0xB2
    doc: "Find first valid log entry"  

  - id: log_entry
    type: log_entries
    repeat: until
    repeat-until: _io.eof

types:
  log_entries:
    seq:
    - id: header_begin
      contents: [0xB2]
    - id: length
      type: u1
      doc: "Data is sometimes less then <length> bytes. Calculated different then MBB"
    - id: log_type
      type: u1
      doc: "0xFD 0x4B 0x4D"
    # when length 0x6B: 0xFE or <variable> 0xFE is inserted before timestamp.  variable increments by three
    # 0x40->0x43. Sometimes nothing inserted though (smh)
#   - id: timestamp
#      type: u4
    - id: header
      terminator: 0xF9
      doc: "Process <data-somtimes>,timestamp,<data:null>,sequence-number at program SW level for now"
      #size: 4
#    - id: count
#     type: u1
#     doc: 'seems to increment for every 0xB2 record'
#    - id: header_end
#      contents: [0xF9]  # 0xF8=>Serial Log Console <--MBB... (BMS also?)
    - id: data
      type:
        switch-on: log_type
        cases:
          0x4B: log_type_4_b
          0x4D: log_type_4_d
          0xFD: capacity_estimate
          _: log_type_unknown

  log_type_4_b:
    seq:
      - id: data
        eos-error: false
        terminator: 0xB2
        consume: false
  log_type_4_d:
    seq:
      - id: data
        eos-error: false
        terminator: 0xB2
        consume: false
  capacity_estimate:
    seq:
      - id: data
        type: str
        encoding: ASCII
        eos-error: false
        terminator: 0xB2
        consume: false
  log_type_unknown:
    seq:
      - id: data
        eos-error: false
        terminator: 0xB2
        consume: false