Experience on how to crate a development infrastructure for an IoT project

1. Challenges of Developing Bluetooth
Low Energy Application on Android
Gábor Guta

2. What is SBrick?
BLE controled analog input / output module for LEGO

3. Low Energy
Simple Android API
Widely Adapted

4. GATT (Generic Attribute Profile)
Profile
Service A
Service B
Characteristic 1
Characteristic 2
Characteristic 3
Characteristic 4

5. From Prototyping to Production
Stability
Reducing error
localization time
Validation of assumptions
Remote troubleshooting

6. Hard to solve issues
Bugs in Android BLE stack implementations
different BLE HW (4 major manufacturers)
Hard to test stability
At the time of detecting a connection issue,
it is too late to fix

7. Testing / Debugging
BLE traffic sniffing
Logging Building Stubs

8. Logging
Android Device
Android OS
SBrick App
BLE Stack
BLE Abstraction
Driver
Hybrid App
SBrick Firmware
LOG
LOG

9. Unit Testing
PC Test Runner
EmuDriver
SBrick Driver
JUnit Test

10. Firmware Testing
Raspberry Pi Test App
BLE Lib
Test
SBrick Firmware
ADC

11. Test hardware

12. Driver Integration Test
Android Device
Android OS
SBrick App
BLE Stack
BLE Abstraction
Driver
Teszt
SBrick Firmware
BLE Traffic
Sniffer

13. Application Integration Test
Android Device
Android OS
SBrick App
BLE Stack
BLE Abstraction
Driver
Hibrid App
SBrick Firmware
ADC
Test

14. Q&A
Gábor Guta
the.gaboo@gmail.com