The slides from my session at DevSum15 in Stockholm 2015-05-26

1. #devsum15
Having fun with BLE,
RaspberryPi & Azure
Uffe Björklund
Note: code and article for this session is available at
https://github.com/uffebjorklund/TI-CC2650
@ulfbjo uffe@xsockets.net

2. #devsum15
About Me
@ulfbjo uffe@xsockets.net
2000
2007
2010
2014
● Stateful (BI-directional/Full-Duplex) communication
● High performance
● Scalable
● Modular

3. #devsum15
Why?
@ulfbjo uffe@xsockets.net
In the beginning...

4. #devsum15
Why?
@ulfbjo uffe@xsockets.net
Now...

5. #devsum15
So what is the challenge?
@ulfbjo uffe@xsockets.net
MQTT
AMQP
XMPP
REST
WEBSOCKETS
CoAPCustom

6. #devsum15
A magic option...
@ulfbjo uffe@xsockets.net

7. #devsum15
Sadly...
@ulfbjo uffe@xsockets.net

8. #devsum15
So...
@ulfbjo uffe@xsockets.net
USE COMMON SENSE
The developer should be in control, not the framework

9. #devsum15
What to do?
@ulfbjo uffe@xsockets.net
- We build one protocol and then adapt each client to use it…
- Or we allow clients to talk to each other “cross-protocol”

10. #devsum15
I prefer x-protocol
@ulfbjo uffe@xsockets.net

11. #devsum15
10.000 feet
@ulfbjo uffe@xsockets.net

12. #devsum15
Then there is STATE!
@ulfbjo uffe@xsockets.net
- STATE is important!
If you do not know the clients you do not know who to send to.
- We have full duplex connections, use STATE
- STATE will reduce development time
- STATE will decrease the size of your messages
- STATE will reduce the complexity of your application

13. #devsum15
TI-CC2650
@ulfbjo uffe@xsockets.net
Ultra Low Power Wireless MCU
Infrared & ambient IR-temp
Ambient light sensor
Humidity sensor
Barometric pressure sensor
9-axis Motion Tracking Device
- Accelerometer
- Gyroscope
- Compass

14. #devsum15
TI-CC2650
@ulfbjo uffe@xsockets.net
Infrared & ambient IR-temp
//CONNECT
gatttool -b [TAGID] -I
//START MEASUREMENT
char-write-cmd 0x24 01
//ENABLE READ NOTIFICATION
char-read-hnd 0x21
//ENABLE NOTIFICATION
char-write-cmd 0x22 01:00
//DISABLE NOTIFICATION
char-write-cmd 0x22 00:00

15. #devsum15
TI-CC2650
@ulfbjo uffe@xsockets.net
<code/>

16. #devsum15
The fake unicorn way
@ulfbjo uffe@xsockets.net
The question is not if things will change, it's only a matter of when they will change..
Make sure you have the flexibility to adapt when changes come!
Be in control of your transports!
Might work just fine...

17. #devsum15
Questions?
@ulfbjo uffe@xsockets.net

18. #devsum15
Thanks!
@ulfbjo uffe@xsockets.net
- Mail: uffe@xsockets.net
- Twitter: @ulfbjo or @xsockets
- LinkedIn: http://se.linkedin.com/in/uffebjorklund
- https://github.com/uffebjorklund/TI-CC2650