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init.md

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Watch init

Mac address and pairing

  • The mac address you may get from the watch from simple bluetooth scanning doesn't cut it, you need the "hidden" (or "real" mac address from the QR code (see qrcode.md)
  • You can bond using com.huami.iwds.uniconnect.Link.bondAddress() using the mac address you've obtained with the QR code, somehow, it's triggering the watch to do a pairing request to the phone
  • The watch and phone will ask for the same pincode, this seems more because of how bluetooth works than something really even wanted by the watch
  • After pairing, the watch needs some informations (see next chapter)

Sync of first time informations

  • Firstly it gets a "transporter" with the context, and "com.huami.watch.companion"
  • Apparently, there's two "modes", based on if the app/account was previously tied to the watch or not, they are called "OnRestore" and "OnNotRestore"
  • "OnRestore" seems to only sync the watchface configuration and the AGPS data
  • There's two "modes", depending if the bind was set with OnRestore or OnNotRestore
  • In the OnNotRestore case (first time binding this watch), it calls ACTION_INITIAL_FINISH ("com.huami.watch.companion.transport.InitialFinish") with the init data
  • If not, it will first send ACTION_SYNC_DATA_START ("com.huami.watch.companion.transport.SyncDataStart"), and then ACTION_SYNC_DATA ("com.huami.watch.companion.transport.SyndData") with the data
  • So, You have either ACTION_SYNC_START then ACTION_SYNC_DATA when you have OnRestore, or ACTION_INITIAL_FINISH when OnNotRestore, so it should be possible to init the watch with only the second one

Init data

    • UID (string)
    • USER_OVERSEA (boolean, i guess it would enable NFC and the like)
    • USER_MI_ID (string, note, the watch apparently can't check it given that at this point, it doesn't have wifi yet)
    • USER_INFO (parcelable)
    • EXTRA_INFO (json string, only contains {"cmiitId"=2016DP4306"})
    • USER_SETTINGS (json string)
    • if "find", SPORT_ORDER (json string)
  • UID and MI_ID aren't the same, but both come from the same class, Account