MOPCON 2013

1. 挖掘低耗電藍芽的寶藏
!
Evan Wu

2. Evan Wu
Cocoa Heads Kaohsiung 共同發起⼈人
Code for Kaohsiung 共同發起⼈人
Code Monkey @Mobilogics

3. Bluetooth 4.0 Low Energy
The Bluetooth SIG announced the formal
adoption of Bluetooth Core Specification
Version 4.0 in July 2010.

4. •Ultra-low peak, average and idle mode
power consumption
•Ability to run for years on standard,
coin-cell batteries
•Low cost
•Multi-vendor interoperability
•Single Mode & Dual Mode
http://developer.bluetooth.org

5. CR2032

6. Frequency Bands and Channel
Arrangement
The Bluetooth system operates in the 2.4 GHz ISM
band. This frequency band is 2400 - 2483.5 MHz
!
The 79 RF channels are ordered from channel
number 0-78 and are spaced 1 MHz beginning at
2402 GHz
http://developer.bluetooth.org

7. Range
Class 3 radios - have a range of up to 1 meter or 3
feet
Class 2 radios - most commonly found in mobile
devices - have a range of 10 meters or 33 feet
Class 1 radios - used primarily in industrial use
case - have a range of 100 meters or 300 feet
http://developer.bluetooth.org

8. Transmitter Characteristics
Power Class
Maximum
Output Power
(Pmax)
Nominal Output
Power
Minimum
Output Power
Power Control
1
100 mW(20
dBm)
N/A 1mW(0 dBm)
Pmin<+4 dBm
to Pmax
Optional:
Pmin** to Pmax
2 2.5mW(4 dBm) 1mW(0 dBm)
0.25mW(-6
dBm)
Optional: Pmin
to Pmax
3 1mW(0 dBm) N/A N/A
Optional: Pmin2
to Pmax
http://developer.bluetooth.org

11. Classic Bluetooth

13. Automation
SecuritySports/FitnessHealth Care
Entertainment Toys
Pay System Time Services Proximity
WWDC 2012 Session 703

14. Platforms for Bluetooth Smart devices
Company Description
Bluegiga Offers single mode development kits & more. Bluegiga.com
Broadcom Offers application development kit. Broadcom.com
Cambridge Silicon Radio Offers hosts, controllers, profile solutions & more. CSR.com
connectBlue Offers single mode platform for Bluetooth Smart devices & more. connectBlue.com
ISSC Technologies Corp. Offers platforms for Bluetooth Smart device development. issc-tech.com
Laird Technologies Offers single mode BLE module featuring smartBASIC. lairdtech.com
Nordic Semiconductor Offers single mode development kits & more. NordicSemi.com
Stollmann Offers single mode platform independent profile solutions. Stollmann.com
TI Offers single mode development kits & more. TI.com
http://developer.bluetooth.org

15. connectBlue Bluetooth Serial Port Module OBS421
TICC2541 SensorTag Development Kit
Nordic nRF8001 Development Kit

20. Does the iOS simulator
support Bluetooth Low
Energy?
Technical Note TN2295

21. How about OS X?

22. http://www.apple.com.tw

25. Role of Bluetooth 4.0
Client Server
Wants Data Has Data
Central Peripheral
Master Slave

26. Profiles
Profiles are high level definitions that define how
services can be used to enable an application or
use case
http://developer.bluetooth.org

27. Profiles
Alert Notification HID OVER GATT
Blood Pressure Location and Navigation
Cycling Power Phone Alert Status
Cycling Speed and Cadence Proximity
Find Me Running Speed and Cadence
Glucose Scan Parameters
Health Thermometer Time
Heart Rate

28. Services
Services are collections of characteristics and
relationships to other services that encapsulate the
behavior of part of a device.
http://developer.bluetooth.org

29. Services
Alert Notification Service
0x1811
Battery Service
0x180f
Blood Pressure
0x1810
Current Time Service
0x1805
Cycling Power
0x1818
Cycling Speed and
Cadence
Device Information Generic Access Generic Attribute
Glucose Health Thermometer Heart Rate
Human Interface Device Immediate Alert Link Loss
Location and Navigation Next DST Change Service Phone Alert Status Service
Reference Time Update
Service
Running Speed and
Cadence
Scan Parameters
Tx Power

30. Characteristics
Alert Category ID Alert Category ID Bit Mask Alert Level
Alert Notification Control Point Alert Status Appearance
Battery Level Blood Pressure Feature Blood Pressure Measurement
Body Sensor Location Boot Keyboard Input Report Boot Keyboard Output Report
CSC Feature CSC Measurement Current Time
Cycling Power Control Point Cycling Power Feature Cycling Power Measurement
Cycling PowerVector Data Time Day Date Time
Day of Week Device Name DST Offset
Exact Time 256 Firmware Revision String Clucose Feature
Glucose Measurement Glucose Measurement Context Hardware Revision String
Heart Rate Control Point Heart Rate Measurement HID Control Point
HID Information IEEE 11073-20601 Regulatory Certification Data List Intermediate Cuff Pressure
Intermediate Temperature LN Control Point LN Feature
Local Time Information Local Time Information Location and Speed
Manufacturer name String Measurement Interval Model Number String
Navigation New Alert Peripheral Preferred Connection Parameters
Peripheral Privacy Flag PnP ID Position Quality
Protocol Mode Reconnection Address Record Access Control Point
Reference Time Information Report Report Map
Ringer Control Point Ringer Setting RSC Feature
RSC Measurement SC Control Point Scan Interval Window
Scan Refresh Sensor Location Serial Number String
Supported New Alert Category Supported Unread Alert Category System ID
Temperature Measurement Temperature Type Time Accuracy
Time Source Time Update Control Point Time Update State
Time with DST Time Zone Tx Power Level

31. Profile, Services and Characteristics
Profile
WWDC 2012 Session 703

32. SDK and Framework
Android:
samsung_ble_sdk_200.jar
!
iOS:
CoreBluetooth.framework

33. Central Manager
Scan
Discover Peripheral
Connect / Disconnect
Discover Services
Discover Characteristics

34. CBCentralManager *centralManager = [[CBCentralManager alloc]
initWithDelegate:self queue:nil];
!
!
!
!
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
if (central.state == CBCentralManagerStatePoweredOn) {
[central scanForPeripheralsWithServices:nil options:0];
}
}
Scan

35. - (void)centralManager:(CBCentralManager *)central
didDiscoverPeripheral:(CBPeripheral *)peripheral
advertisementData:(NSDictionary *)advertisementData RSSI:
(NSNumber *)RSSI
{
[centralManager connectPeripheral:peripheral options:nil];
}
Discover Peripheral

36. - (void)centralManager:(CBCentralManager *)central
didConnectPeripheral:(CBPeripheral *)peripheral
{
[peripheral setDelegate:self];
[peripheral discoverServices:nil];
}
!
!
- (void)centralManager:(CBCentralManager *)central
didDisconnectPeripheral:(CBPeripheral *)peripheral error:
(NSError *)error
{
NSLog(@"didDisconnectPeripheral = %@", [peripheral.identifier
UUIDString]);
}
Connected / Disconnected

37. - (void)peripheral:(CBPeripheral *)peripheral
didDiscoverServices:(NSError *)error
{
if (!error) {
for (CBService *service in peripheral.services) {
[peripheral discoverCharacteristics:nil
forService:service];
}
}
}
Discover Services

38. - (void)peripheral:(CBPeripheral *)peripheral
didDiscoverCharacteristicsForService:(CBService *)service error:
(NSError *)error
{
!
}
Discover Characteristics

39. Peripheral Manager
CBPeripheralManager *peripheralManager = [[CBPeripheralManager
alloc] initWithDelegate:self queue:nil];
!
!
!
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager
*)peripheral
{
if (peripheral.state == CBPeripheralManagerStatePoweredOn) {
[peripheralManager startAdvertising:dictionary];
}
}

40. Data Transmission
Read
Write
Notification

41. Data Transmission
- (void)readValueForCharacteristic:(CBCharacteristic
*)characteristic;

42. Data Transmission
- (void)writeValue:(NSData *)data forCharacteristic:
(CBCharacteristic *)characteristic type:
(CBCharacteristicWriteType)type;

43. - (void)setNotifyValue:(BOOL)enabled forCharacteristic:
(CBCharacteristic *)characteristic;
Data Transmission
- (void)peripheral:(CBPeripheral *)peripheral
didUpdateValueForCharacteristic:(CBCharacteristic
*)characteristic error:(NSError *)error;
- (BOOL)updateValue:(NSData *)value forCharacteristic:
(CBMutableCharacteristic *)characteristic onSubscribedCentrals:
(NSArray *)centrals;

44. Need a Help with Tool?
GreatBLE

45. DEMO

46. AScan
Central
Peripheral

47. AScaniPDT5iPad
Central
Peripheral

48. AScaniPDT5
Central
Peripheral
iPad

49. Product Idea?
!
Where is the Treasure?

50. More Information
Bluetooth Accessory Design Guidelines for Apple Products
https://developer.apple.com/hardwaredrivers/BluetoothDesignGuidelines.pdf
Bluetooth SIG, Inc.
http://www.bluetooth.org
Bluetooth Developer Portal
https://developer.bluetooth.org/Pages/default.aspx
WWDC 2012 Session 703
WWDC 2012 Session 705
WWDC 2013 Session 703

51. More Information
BlackBerry 10 Bluetooth LE resource index
http://supportforums.blackberry.com/t5/Native-Development-Knowledge/BlackBerry-10-Bluetooth-LE-resource-
index/ta-p/2326147
Samsung BLE SDK
http://developer.samsung.com/ble

52. More Information
github.com/Mobilogics
Code for Kaohsiung facebook
http://www.facebook.com/groups/codeforkaohsiung/
Cocoaheads Kaohsiung facebook
http://www.facebook.com/groups/cocoaheads.kaohsiung/
evan3rd@gmail.com

53. 謝謝