In recent years, "IoT" or "Wearable" are one of buzzwords, so many people might have interests in building hardware products. But learning how to develop electric circuits, mechanical systems or embedded systems etc. from zero is so difficult. However, iOS developers can contribute to projects of hardware products with the knowledge of Core Bluetooth / Bluetooth Low Energy (BTLE), even if they are not familiar with hardware layer. In this session, he will introduce BTLE, show easy examples of Core Bluetooth, and share knowledges with his experiences developing more than 10 apps for IoT and Wearable products. What is Bluetooth Low Energy? Why use this? Very easy examples of how to communicate using Core Bluetooth What part was my responsibility in the projects? Communication with firmware engineer. Designing GATT Designing the behavior of the app in background Limitations in background. What are possible and impossible? State Preservation and Restoration Develop without prototypes of the hardware BTLE Module's Developer Kit Prototyping tools Build emulator apps Trouble Shootings Debugging tools Each cases: Can't find / connect / send or receive information

1. Practical Core Bluetooth
in IoT & Wearable projects
Shuichi Tsutsumi @shu223
iOS Freelancer
UIKonf 2016 - Berlin

2. Overview
• Basics of Core Bluetooth
• Practical Core Bluetooth

3. Bluetooth Low Energy?

4. Bluetooth Low Energy (BLE)
• Wireless technology
- no network infrastructure required

5. Bluetooth Low Energy (BLE)
• Wireless technology
- no network infrastructure required
Wi-Fi

6. Bluetooth Low Energy (BLE)
• Wireless technology
- no network infrastructure required
BLE

7. • Low energy

8. • Low energy
• NOT compatible with Classic BT

9. • Low energy
• NOT compatible with Classic BT
• Uses 2.4 GHz radio frequencies

10. • Low energy
• NOT compatible with Classic BT
• Uses 2.4 GHz radio frequencies
• Marketed by the Bluetooth SIG

11. • Low energy
• NOT compatible with Classic BT
• Uses 2.4 GHz radio frequencies
• Marketed by the Bluetooth SIG
• etc…

12. • Low energy
• NOT compatible with Classic BT
• Uses 2.4 GHz radio frequencies
• Marketed by the Bluetooth SIG
• etc…

13. The most important thing
for
iOS developers

14. The API ‘Core Bluetooth’
is open for developers

15. The API ‘Core Bluetooth’
is open for developers
• API for Classic BT is NOT open.
- Requires MFi certification.

16. BLE is almost the ONLY way
to enable iOS apps to communicate
with external hardware
without infrastructure or MFi.

17. Basics of
Core Bluetooth

19. Moff Band Moff App

20. Moff Band Moff App
BLE Connection

21. Moff Band Moff App
BLE Connection
Sensors
- Gyroscope
- Accelerometer

22. Moff Band Moff App
Sensor Data
BLE Connection
Sensors
- Gyroscope
- Accelerometer

23. Moff Band Moff App
Sensor Data
BLE Connection
Sensors
- Gyroscope
- Accelerometer
Analyze sensor data

24. Moff Band Moff App
Sensor Data
BLE Connection
Sensors
- Gyroscope
- Accelerometer
Analyze sensor data
Recognize
- Gesture
- Posture

25. Moff Band Moff App
Sensor Data
BLE Connection
Sensors
- Gyroscope
- Accelerometer
Analyze sensor data
Recognize
- Gesture
- Posture
Play sounds

26. Sensor Data
How sensor data is sent with Core Bluetooth
BLE Connection

27. Step 1. Scan

28. Step 1. Scan: Search for nearby BLE devices

29. Step 1. Scan: Search for nearby BLE devices

30. Step 1. Scan
Advertise
: Search for nearby BLE devices

31. Scan
Step 1. Scan
Advertise
: Search for nearby BLE devices

32. Scan
Step 1. Scan
Advertise
: Search for nearby BLE devices
centralManager.scanForPeripheralsWithServices(nil, options: nil)

33. Scan
Step 1. Scan
Advertise
Discover
: Search for nearby BLE devices

34. Scan
Step 1. Scan
Advertise
Discover
: Search for nearby BLE devices
func centralManager(central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(“Discovered a BLE device!”)
}

35. Scan
Step 1. Scan
Advertise
Discover
: Search for nearby BLE devices
func centralManager(central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(“Discovered a BLE device!”)
}
Central

36. Scan
Step 1. Scan
Advertise
Discover
: Search for nearby BLE devices
func centralManager(central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(“Discovered a BLE device!”)
}
Peripheral Central

37. Step 2. Connect

38. Connect
Step 2. Connect

39. Connect
Step 2. Connect
centralManager.connectPeripheral(peripheral, options: nil)

40. Connect
Step 2. Connect
centralManager.connectPeripheral(peripheral, options: nil)
func centralManager(central: CBCentralManager,
didConnectPeripheral peripheral: CBPeripheral)
{
print(“Connected!”)
}

41. Step 3. Subscribe

42. Step 3. Subscribe: Ready to receive data

43. Step 3. Subscribe: Ready to receive data
GATT = Generic Attribute Profile

44. Moff Service
xx Service
Step 3. Subscribe: Ready to receive data
GATT = Generic Attribute Profile

45. Moff Service
xx Service
Button Characteristic
xx Characteristic
Sensor Characteristic
Step 3. Subscribe: Ready to receive data
GATT = Generic Attribute Profile

46. Moff Service
xx Service
Button Characteristic
xx Characteristic
Sensor Characteristic
Subscribe
(Request to be notified)
Step 3. Subscribe: Ready to receive data
GATT = Generic Attribute Profile

47. Moff Service
xx Service
Button Characteristic
xx Characteristic
Sensor Characteristic
Subscribe
(Request to be notified)
Step 3. Subscribe: Ready to receive data
GATT = Generic Attribute Profile
peripheral.setNotifyValue(true, forCharacteristic: c)

48. Step 4. Notify
Moff Service
Sensor Characteristic
xxxx Characteristic

49. Step 4. Notify
Moff Service
Sensor Characteristic
xxxx Characteristic
Update the value

50. Step 4. Notify
Notify
subscribers
Moff Service
Sensor Characteristic
xxxx Characteristic
Update the value

51. Step 4. Notify
Notify
subscribers
Moff Service
Sensor Characteristic
xxxx Characteristic
Update the value
func peripheral(peripheral: CBPeripheral,
didUpdateValueForCharacteristic characteristic: CBCharacteristic,
error: NSError?)
{
print(“Received sensor data!”)
}

52. Step 4. Notify
Notify
subscribers
Moff Service
Sensor Characteristic
xxxx Characteristic
Update the value
func peripheral(peripheral: CBPeripheral,
didUpdateValueForCharacteristic characteristic: CBCharacteristic,
error: NSError?)
{
print(“Received sensor data!”)
}

53. Hardware Side?

54. Hardware Side?
I’m sorry, I don’t know…

55. BLE

56. BLE
iOS Engineer

57. BLE
iOS Engineer

58. BLE
Firmware Engineer iOS Engineer

59. BLE
Firmware Engineer iOS Engineer

60. HW Projects
I’ve worked on
as an iOS engineer

61. Wheelchair ‘WHILL’

62. Wheelchair ‘WHILL’

63. Wearable Walkie-Talkie
‘BONX’

64. Wearable Walkie-Talkie
‘BONX’

65. Wearable Walkie-Talkie
‘BONX’

66. Group conversation system with VoIP
- Detects the human voice
- Cuts out all background noise

67. → Can be used even in areas with poor coverage!
Group conversation system with VoIP
- Detects the human voice
- Cuts out all background noise

68. BLE for BONX

69. BLE for BONX

70. BLE for BONX

71. IoT for Cars ‘SmartDrive’

72. Printable Open-Source Humanoid “PLEN2”

73. Music for the Deaf
Daito Manabe/Motoi Ishibashi/Teruoka Masaki/Shuichi Tsutsumi x SOUL FAMILY

74. Music for the Deaf
Daito Manabe/Motoi Ishibashi/Teruoka Masaki/Shuichi Tsutsumi x SOUL FAMILY
iPhone

75. Music for the Deaf
Daito Manabe/Motoi Ishibashi/Teruoka Masaki/Shuichi Tsutsumi x SOUL FAMILY
Electronic Stimulation DeviceiPhone

76. Music for the Deaf
Daito Manabe/Motoi Ishibashi/Teruoka Masaki/Shuichi Tsutsumi x SOUL FAMILY
Commands
Electronic Stimulation DeviceiPhone

77. Music for the Deaf
Daito Manabe/Motoi Ishibashi/Teruoka Masaki/Shuichi Tsutsumi x SOUL FAMILY

78. Practical Core Bluetooth

79. Defining GATT

80. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

81. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

82. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

83. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

84. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

85. GATT to send sensor data
Foo Service
Sensor Data Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Bar Service
xx Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: acc x, acc y, acc z, gyro x, gyro y, gyro z (2bytes for each)
xx Characteristic

86. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00

87. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00

88. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00

89. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00
Button interactions

90. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00
Button interactions

91. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00
Button interactions

92. GATT to send button interactions
Foo Service
Button Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Notify
Value: 0x01 or 0x00
Button interactions
0x01: Pushed
0x00: Released

93. GATT for remote control
Foo Service
Remote Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Write
Value: Horizontal (-100 ~ 100), Vertical (-100 ~ 100)

94. GATT for remote control
Foo Service
Remote Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Write
Value: Horizontal (-100 ~ 100), Vertical (-100 ~ 100)

95. GATT for remote control
Foo Service
Remote Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Write
Value: Horizontal (-100 ~ 100), Vertical (-100 ~ 100)
values

96. GATT for remote control
Foo Service
Remote Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Write
Value: Horizontal (-100 ~ 100), Vertical (-100 ~ 100)
values

97. GATT for remote control
Foo Service
Remote Control Characteristic
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Properties: Write
Value: Horizontal (-100 ~ 100), Vertical (-100 ~ 100)
values

98. How to define GATT
1. Create UUID for the service & characteristic
2. Define the properties (Read, Notify, Write, etc.)
Peripheral → Central: Notify
Central → Peripheral: Write
3. Define the value format
Usually limited to 20 bytes
$ uuidgen
CEEA31BC-BEAC-4A78-B7ED-FC96B6254D4C

99. Reference:
GATT profiles by Bluetooth SIG

100. Defining background
behaviors

101. Background behaviors on iOS
• Very limited
- Listening to music
- Getting location data
- Downloading data

102. Imagine

103. If BLE didn’t work in the
background…

105. You would have to always keep the app
in the foreground, while snowboarding!

107. You would have to launch the app
whenever you go driving!

108. What functions can be used
in the background?

109. What functions can be used
in the background?
• Scanning peripherals

110. What functions can be used
in the background?
• Scanning peripherals
• Connecting with peripherals

111. What functions can be used
in the background?
• Scanning peripherals
• Connecting with peripherals
• Reading characteristics’ value

112. What functions can be used
in the background?
• Scanning peripherals
• Connecting with peripherals
• Reading characteristics’ value
• Writing characteristics’ value

113. What functions can be used
in the background?
• Scanning peripherals
• Connecting with peripherals
• Reading characteristics’ value
• Writing characteristics’ value
• Receiving notifications

114. What functions can be used
in the background?
• Scanning peripherals
• Connecting with peripherals
• Reading characteristics’ value
• Writing characteristics’ value
• Receiving notifications
Almost all functions can be used
even in the background!

115. How to support
background mode

117. Just check this box!

118. Limitations

119. Limitations
• Longer intervals for scanning

120. Limitations
• Longer intervals for scanning
• Must explicitly specify one or more services to scan

121. Limitations
• Longer intervals for scanning
• Must explicitly specify one or more services to scan
• CBCentralManagerOptionShowPowerAlertKey option is
ignored

122. Limitations
• Longer intervals for scanning
• Must explicitly specify one or more services to scan
• CBCentralManagerOptionShowPowerAlertKey option is
ignored
Resources
- Core Bluetooth Programming Guide
- Core Bluetooth Framework Reference (also in headers)

123. If the app in the background
is killed by the system…

125. State Preservation and Restoration

126. State Preservation and Restoration
The system takes over the BLE tasks
even after the app is killed.

127. State Preservation and Restoration
The system takes over the BLE tasks
even after the app is killed.
- Preserves the state of the app’s central managers
and continues the BLE tasks on their behalf.

128. State Preservation and Restoration
The system takes over the BLE tasks
even after the app is killed.
- Preserves the state of the app’s central managers
and continues the BLE tasks on their behalf.
- Relaunches the app into the background and calls
the corresponding delegate method.

129. State Preservation and Restoration
The system takes over the BLE tasks
even after the app is killed.
- Preserves the state of the app’s central managers
and continues the BLE tasks on their behalf.
- Relaunches the app into the background and calls
the corresponding delegate method.
→ The app can handle BLE events!

131. • The app is killed by the system

132. • The app is killed by the system
• The user pushes the button on the
peripheral device

133. • The app is killed by the system
• The user pushes the button on the
peripheral device
• The system receives the notification

134. • The app is killed by the system
• The user pushes the button on the
peripheral device
• The system receives the notification
• The app is relaunched in the BG and
the delegate method is called.

135. func peripheral(peripheral: CBPeripheral,
didUpdateValueForCharacteristic characteristic: CBCharacteristic,
error: NSError?)
{
print(“Received the characteristic data!”)
}
• The app is killed by the system
• The user pushes the button on the
peripheral device
• The system receives the notification
• The app is relaunched in the BG and
the delegate method is called.

136. func peripheral(peripheral: CBPeripheral,
didUpdateValueForCharacteristic characteristic: CBCharacteristic,
error: NSError?)
{
print(“Received the characteristic data!”)
}
• The app is killed by the system
• The user pushes the button on the
peripheral device
• The system receives the notification
• The app is relaunched in the BG and
the delegate method is called.
The app can process the button interaction!

137. Implementation

138. Implementation
• Add an option when initializing the
CBCentralManager object.
let options = [
CBCentralManagerOptionRestoreIdentifierKey: "somekey"
]
centralManager = CBCentralManager(
delegate: self,
queue: queue,
options: options)

139. Implementation
• Implement the delegate method which is called when
the app is restored.
func centralManager(central: CBCentralManager,
willRestoreState dict: [String : AnyObject])
{
print("Restored")
}

140. Testing the restoration

141. Testing the restoration
• Kill the app as if it was killed by the iOS
kill(getpid(), SIGKILL);

142. How to test
without HW prototypes

143. Did the HW prototypes exist when develop the apps?
Projects HW prototypes existed?
Moff YES
WHILL NO
BONX NO
SmartDrive YES
PLEN2 NO
Music for the Deaf NO

144. Development Kit

145. Development Kit
BLE Module

146. Development Kit
BLE Module
Display

147. Development Kit
BLE Module
Display
USB interface

148. Development Kit
BLE Module
Display
USB interface
Battery box

149. Development Kit
Can start development without
creating a circuit ourselves
BLE Module
Display
USB interface
Battery box

151. Development Kit

152. Development Kit App

153. Development Kit App
BLE

154. Horizontal (-100~100) / Vertical (-100~100)
Development Kit App
BLE

156. Emulator App

157. Emulator App
• Develop another iOS app as
the alternative to the
peripheral device

158. Emulator App
• Develop another iOS app as
the alternative to the
peripheral device
• Use CBPeripheralManager

159. Emulator App
• Develop another iOS app as
the alternative to the
peripheral device
• Use CBPeripheralManager
• Easier for iOS engineers

163. =

164. Multi-Function Control
• Single Tap
• Double Tap
• Long Press
• Very Long Press
=

165. Troubleshooting

166. Can’t find the peripheral
Scan
?

167. Can’t connect
Find

168. Can’t connect
Connect
×

169. • Connection dropped

170. • Connection dropped
• Can’t discover services or characteristics

171. • Connection dropped
• Can’t discover services or characteristics
• Fail to write

172. • Connection dropped
• Can’t discover services or characteristics
• Fail to write
• Incorrect characteristic values

173. • Connection dropped
• Can’t discover services or characteristics
• Fail to write
• Incorrect characteristic values
• Incorrect behaviors in the background

174. • Connection dropped
• Can’t discover services or characteristics
• Fail to write
• Incorrect characteristic values
• Incorrect behaviors in the background
• etc…

175. Identify which side
the problem is on
Is the problem on the central side or on the peripheral side?
→ Compare with another iOS app like ‘LightBlue’

176. Can’t find the peripheral
• Scanning, but can’t find the peripheral device

177. Can’t find the peripheral
• Scanning, but can’t find the peripheral device
Scan

178. Can’t find the peripheral
• Scanning, but can’t find the peripheral device
Scan
but ‘didDiscover’
method isn’t called

179. Can’t find the peripheral
• Scan with another iOS app
Scan

180. Can’t find the peripheral
• Scan with another iOS app
Scan
Discovered peripherals

181. Can’t connect, etc.
Connect

182. Can’t connect, etc.
Connect
Services & Characteristics

183. Other debugging tools

184. Bluetooth Explorer

185. Bluetooth Explorer
An OS X app made by Apple

187. Low Energy Devices

188. Low Energy Devices
Scan, Connect

189. Low Energy Devices
Scan, Connect Details of services and characteristics

190. Low Energy Devices
Scan, Connect Details of services and characteristics
Write, Read,
Register Notify (Subscribe)

191. func centralManager(
central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(advertisementData)
}

192. func centralManager(
central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(advertisementData)
}
Filtered by iOS!

193. func centralManager(
central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(advertisementData)
}
Filtered by iOS! → Can’t see all of the advertisement data

194. func centralManager(
central: CBCentralManager,
didDiscoverPeripheral peripheral: CBPeripheral,
advertisementData: [String : AnyObject],
RSSI: NSNumber!)
{
print(advertisementData)
}
Filtered by iOS!
e.g. Can’t see the ‘Manufacture Data’ field of iBeacon
→ Can’t see all of the advertisement data

196. Not filtered
→ Can see the ‘Manufacture Data’ field of iBeacon

197. Packet Logger

198. Packet Logger
An OS X app made by Apple

201. How to get

202. How to get

203. How to get
Download ‘Hardware IO Tools for Xcode’

204. How to get
Download ‘Hardware IO Tools for Xcode’

205. How to get
Download ‘Hardware IO Tools for Xcode’

206. How to get
Download ‘Hardware IO Tools for Xcode’

207. App Review

209. MSRP $13,995

210. Costing too much

211. Not enough devices when submitting

212. Videos for review

213. Videos for review
• Show how the app works with the peripheral device

214. Videos for review
• Show how the app works with the peripheral device
• Not need to be cool!

216. • Shoot with iPhone

217. • Shoot with iPhone
• Edit with iMovie

218. Recap
• What is Bluetooth Low Energy?
• Basics of Core Bluetooth with an actual product
• Practical Core Bluetooth with specific examples
- Defining GATT
- Defining background behaviors
- Testing without HW prototypes
- Troubleshooting
- App Review

219. 束：31mm
表 4 表 1
iOS×BLE
Core Bluetooth
プログラミング
iOS×BLECoreBluetooth
プ
ロ
グ
ラ
ミ
ン
グ
堤
修
一
松
村
礼
央
＝
著
堤修一×松村礼央＝著
Shuichi TSUTSUMI×Reo MATSUMURA
iOS×BLE
Core Bluetooth Programming
iOS×BLE
定価：本体4,000円（税別）
Resources
• 500 pages about
iOS x BLE
• Japanese only

220. Resources
• Getting Started with Bluetooth Low Energy
- Covers large area of BLE
• Core Bluetooth Programming Guide
- Good to know the overview of Core Bluetooth
• Core Bluetooth Framework Reference
- Details of Core Bluetooth
• Bluetooth Accessory Design Guidelines for Apple Products
- For HW side, but helpful also for iOS engineers to know specs
or limitations due to HW side such as connection intervals.

221. Resources
• WWDC 2012 - Session 703 - Core Bluetooth 101
- Helpful to know about BLE
• WWDC 2012 - Session 705 - Advanced Core Bluetooth
- Connection interval, Caching, etc…
• WWDC 2013 - Session 703 - Core Bluetooth
- Retrieving peripherals, State preservation & restoration etc..
- Includes advanced and detailed information
• Bluetooth Core Specification by Bluetooth SIG
- The official specification / Total 2000 pages…

222. Thank you!
Shuichi Tsutsumi - iOS Freelancer
• Twitter: @shu223
• GitHub: shu223
• Blog: https://medium.com/@shu223/
• Email: shuichi0526@gmail.com