wprowadzenie do corebluetooth
TRANSCRIPT
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Welcome
CoreBluetooth introduction
Piotr Tobolski meet.Mobile
intive, 2016_09_29
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Agenda
1. Bluetooth LE 2. GAP 3. GATT 4. SensorTag 5. Demo
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_Bluetooth LE
Bluetooth LE
• Known as Bluetooth Smart, Wibree, Bluetooth ULP • Bluetooth Core Specification version 4.0 • Low power
• ~1 year for iBeacon with 900ms advertisement interval on a CR2032 battery
• No backward compatibility
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_GAP
GAP
GAP - Generic Access Profile • Device roles (Peripheral, Central)
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Roles
• Central (master, client) • Usually a phone, or computer
• Peripheral (slave, server) • Usually a small low power device such as iBeacon or sensor
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GAP
GAP - Generic Access Profile • Device roles (Peripheral, Central) • Peripheral advertisements
• Up to 31 bytes of payload • Multiple receivers
• Connections • Transfer much more data • GATT • Exclusive
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_GATT
GATT
GATT - Generic Attribute Profile • Requires connection • Services
• Characteristics • Properties (e.g. read, write, notify) • Value (max 512 bytes) • Descriptors
• Other services
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GATT example
12Type UUID Access Size (bytes) Description
Data AA71* R/N 2 LightLSB:LightMSB
Notification 2902 R/W 2 Write 0x0001 to enable notifications, 0x0000 to disable
Configuration AA72* R/W 1 Write 0x01 to enable data collection, 0x00 to disable.
Period AA73* R/W 1 Resolution 10 ms. Range 100 ms (0x0A) to 2.55 sec (0xFF). Default is 800 milliseconds (0x50).
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_SensorTag
SensorTag
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SensorTag 2
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_Demo
