Walker Initialisation

Checks on startup

• Checks for nintendo string
  • if not found:
    • run eeprom_init(true, true)
    • write nintendo string to eeprom
    • check for unfinished copy
  • if found:
    • Reads health_data_t from eeprom.
    • Reads walker_info_t from eeprom
    • sets global init and has_pokemon flags based on walker_info_t.flags[0..1]
    • check for unfinished copy
• go to sleep mode (??)
• (In sleep mode now)
• process splash normally
• if we aren't inited, go to connect loop

Resetting via IR

Relevant commands are:

"clear events" means:

• zero walker_info_t.event_bitmap
• zero eeprom received_bitfield -> text_event_item_name

"clear lifetime data" means:

• Zero walker_info_t.be_step_count
• Zero health_data_t.total_steps
• Zero health_data_t.total_days
• health_data_t.last_sync = date 2nd Jan 2008
• Zero health_data-t.today_steps
• Zero eeprom caught_pokemon_summary-0x08 -> current_peer_team_data-0x34

All commands call eeprom_init with their respective flags set.

The one that's actually used by the game is 0x2a - only clear event data.

Function eeprom_init

• Zero current_steps
• Zero current_watts
• Clear status_flags bits 1 and 2 (walker_inited, walker_has_pokemon)
• Reliable read walker_info_t
  • Zero unk0, unk1, unk2, unk3
  • Zero tid/sid
  • Zero trainer name
  • If clear_events zero event_bitmap_t
  • Zero flags
  • Zero unk4[2]
  • Zero protocol_subver
  • unk8 = 2
  • Reliable read unique_identity_data_t into walker_t.unique_identity_data
  • if clear_steps zero be_step_count
  • Reliable write walker_info_t
• Clear and write health_data_t
  • if clear_lifetime_data
    • Zero total_steps
    • Zero total_days
    • last_sync = 220924800 2nd Jan 2008
    • Zero today_steps
  • Zero walk_minute_counter
  • Zero current_watts
  • Zero steps_this_watt
  • settings = 0x24
  • Reliable write health_data_t
• If clear_steps zero eeprom 0xce80 - 0xdbcc (caught_pokemon_summary-8 -> current_peer_team_data-0x34)
• Else only zero inventory, event_log, step_log (note: this only skips clearing the staging area (?))
• If clear_events zero eeprom 0xb800 - 0xbec8 (received_bitfield -> text_event_item_name)
• Zero met peer data

Function check_and_validate_eeprom

• Check for "nintendo" string at first 8 bytes of eeprom.
  • if not found:
    • run eeprom_init(true, true)
    • reset sound and contrast from ram health_data
    • write "nintendo" to start of eeprom
  • if found:
    • check settings byte and apply a minimum contrast?
    • update status flags from eeprom
• Check for unfinished copy by reliable reading both copy markers
  • if not ok, continue the copy