Walk End

Procedure

• Normal handshake, DS asserts master.
• DS sends CMD_IDENTITY_REQ 0x20, no data
• Walker sends CMD_IDENTITY_RSP 0x22, contains walker_info_t (IdentityData)
• DS sends 0x40, contains walker_info_t (IdentityData) idk what to do with it
• Walker sends 0x42, no data. Strange since this is apparently CMD_IDENTITY_SEND_ALIAS1
• DS does a bunch of reads.
• DS ping
• Walker pong
• DS sends CMD_WALK_END_REQ 0x4e
• Walker sends CMD_WALK_END_RSP 0x50
• End of connection

What the walker does

• End walk action (after 0x4e)
  • clear special route bit in RamCache_settingsByte
  • clear walker has poke bit in walker_status_flags
  • set log write pointer to top of stack
  • set current watts to zero
  • copy ram health data to reliable HEALTH_DATA_1/2
  • reads IDENTITY_DATA_1/2
  • zeros walker_info_t.unk1, unk3, flags:[0..1]
  • writes to IDENTITY_DATA_1/2
  • zeros 0x64 bytes of eeprom at 0xcf0c (obtained items/pokemon/peer items)
  • 'zeros' 24 elements, each size 0x88 bytes, in eeprom starting at 0xcf0c (see eventLogInvalidate:0x188c)
  • zeros 0x6c8 bytes of eeprom at 0xb800 (event data)
  • zeros 0x1568 bytes of eeprom at 0xde24 (met peer data)
  • zeros 0x10 bytes of eeprom at 0x8f00 (current pokemon summary)

DS checks

In order for the DS to accept the walk end, the eeprom needs to contain:

• valid walker_info_t (IdentityData)
  • protocol_ver = 2, protocol_subver=0
  • le_unk1=1, le_unk3=7
  • correct unique_identity_data_t
• The correct species in route_info_t.pomeon_summary.le_species