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BLE

Avatar for Douglas Kayama Douglas Kayama
October 25, 2017
Technology
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33

 BLE

Bluetooth Low Energy AKA Bluetooth Smart

7Masters Wearables

Avatar for Douglas Kayama

Douglas Kayama

October 25, 2017
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Transcript

  1. AKA Bluetooth Smart Douglas Drumond @douglasdrumond BLE

  2. @douglasdrumond Bluetooth Stack 2

  3. @douglasdrumond Bluetooth Stack Android 2.0: BlueZ 2

  4. @douglasdrumond Bluetooth Stack Android 2.0: BlueZ Android 4.2: BlueDroid 2

  5. @douglasdrumond Bluetooth Stack Android 2.0: BlueZ Android 4.2: BlueDroid Android

    4.3: Adiciona suporte a BLE 2

  6. @douglasdrumond Bluetooth Stack Android 2.0: BlueZ Android 4.2: BlueDroid Android

    4.3: Adiciona suporte a BLE Android 5.0: BLE fica MUITO mais legal 2

  7. @douglasdrumond Básico de BLE 3 Central Peripheral Observer Broadcaster

  8. @douglasdrumond Básico de BLE 4 Central Peripheral Observer Broadcaster

  9. @douglasdrumond Básico de BLE 5 Central Peripheral Observer Broadcaster Beacons

  10. @douglasdrumond Básico de BLE 6 Central Peripheral Observer Broadcaster

  11. @douglasdrumond Básico de BLE 7 Android Jujuba Android Pirulito Central

    Peripheral Observer Broadcaster

  12. @douglasdrumond Arquitetura 8 GATT Profile Service Service Characteristic Characteristic Characteristic

    Characteristic Characteristic Characteristic Characteristic Characteristic

  13. @douglasdrumond Exemplo 9 Heart rate service … Outros Heart rate

    measurement Body sensor location GATT Server GATT Client

  14. @douglasdrumond Service • UUID • 16-bit (assigned) • Ex: medidor

    de pressão sanguínea: 0x1810 10

  15. @douglasdrumond Tudo é UUID 0000<>-0000-1000-8000-00805F9B34FB Ex: medidor de pressão: 0x1810

    00001810-0000-1000-8000-00805F9B34FB 11

  16. @douglasdrumond Antes do Lollipop Filtro: somente Service UUID Somente active

    scan Single device advertisement Parse manual do scan 12

  17. @douglasdrumond A partir do Lollipop Filtro: qualquer campo Batch dos

    resultados Recebe todos os advertisements ScanRecord + AdvertiseData + Builders 13

  18. @douglasdrumond Lollipop 14 Peripheral mode Advertising GATT Server

  19. Some caveats

  20. @douglasdrumond Limites Notificações concorrentes: •Android 4.3: 4 •Android 4.4: 7

    •Android 5–8: 15
 16 Conexões Concorrentes: •Android 4.3: 4 •Android 4.4–8: 7

  21. @douglasdrumond Limites Preciso enviar int[], só suporta byte[] Solução: •marshalling/unmarshalling

    manualmente 17

  22. @douglasdrumond Limites Um dispositivo parear com dois devices ao mesmo

    tempo ✗ 18

  23. Grazie mille! @douglasdrumond