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BASEL BERN BRUGG DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. GENEVA
HAMBURG COPENHAGEN LAUSANNE MUNICH STUTTGART VIENNA ZURICH
Pimping up Industry Devices with
Rasperry Pi, Vert.x und Java 8
@atsticks
Anatole Tresch – Principal Consultant
Anatole Tresch
Open Source Enthusiast
Apache PPMC Member
Consultant, Trainer, Software Architect for Java and Container Technologies
Oracle Star Spec Lead
More than 25 years of software development experience
Contact: [email protected]
Blog: http://maketechsimple.wordpress.com
Slideshare: http://www.slideshare.net/anatoletresch
Twitter: atsticks
Agenda
3
1. Once upon a time…
2. The Requirements
3. Insights
Connection Endpoints
The Protocol Data
Event Handling
Pandora’s Box
4. Business Value and Future
Houston, we
have a
problem…
How it all started…
• A phone call
• A kick-off meeting
• Agile Setup
• An offer
• A prototype
• A successful demo
• …
What ?
Give me some
context…
The Machines
http://www.belimed.com
The Management System
• Windows Application
• Can be connected to multiple machines
• Used for
• Monitoring
• Auditing & History
• Machine Configuration
Deployment View
Network Issues
- Failures
- Process failures
- Outages
- IP Config Lost or invalid
- IP Setup Changes- Software Updates
- Outages
Cabling, Connector
Issues
10
What the Customer wanted
(aka Requirements)
The Requirements for the Retrofit-Box (RFBox)
• Ensure Audit can be done in case of
• Network Failures
• Printer Failures
• The Box hereby
• should be transparent to the management system
• can be attached to different machines and interfaces
• runs with no outages
• is transparent to the machine
Solution
The system context
14
Insights
Connection Endpoints
Serial Communication RS485
• STX (Start of TXT)
• RS 485: 0x02 in payload need tobe masked by 0x00
• IP: no 0x02 masking
• 5 <= LEN <= 255
• 3 <= CMD <= 255
• 0 <= DATA <= 250
• CHK:• CHK = 0x00
• Repeat for all bytes:• CHK << 1
• CHK += Carry
• For IP: always 0x00
The Binary Protocol - Structure
The Binary Protocol - Datatypes
The Binary Protocol – Example (Status Response)
Detailed Example: Status Request
Machine Response - Examples
STXLENNODECMDPAYLOADCHK
Silence:
02380470000000010000000000000020002000200020002000200020002000200020002000200020002000200020
00200020002000200076
STXLENNODECMDPAYLOADCHK
Process start:02800472050000011e00000001000049004300530020005400650073007400200020002000200020002000200020002000200
02000200020002000200020002000200020002000200020002000200020002000200020002000200020002000330031002e00
310032002e003200300031003500560034002e0030003000200010
Process data (1/second, cycle duration: 10-40 minutes)022e040f01000001000000000000011e0000000100000b00007d010000000000000000000000004f000000000083
022e040f01000001000000000000001e0000000100000b00007b010000000000000000000000004f000000000033
022e040f01000001000000000000001e0000000100000b00007a010000000000000000000000004f00000000002b
022e040f01000001000000000000001e0000000100000b000078010000000000000000000000004f00000000001b
022e040f01000001000000000000001e0000000100000b000077010000000000000000000000004e0000000000f2
022e040f01000001000000000000001e0000000100000b000076010000000000000000000000004e0000000000ea
022e040f01000001000000000000001e0000000100000b000074010000000000000000000000004e0000000000da
022e040f01000001000000000000001e0000000100000b000073010000000000000000000000004e0000000000d2
022e040f01000001000000000000001e0000000100000b000072010000000000000000000000004e0000000000ca
022e040f01000001000000000000001e0000000100000b000071010000000000000000000000004e0000000000c2
022e040f01000001000000000000001e0000000100000b00006f010000000000000000000000004d000000000092
022e040f01000001000000000000001e0000000100000b00006e010000000000000000000000004d00000000008a
022e040f01000001000000000000001e0000000100000b00006d010000000000000000000000004d000000000082
…
Process end:02190410400000011e0000000000000072010000000000005
RFBox Event Handling
22
All Communications are handled
also internally asynchronousl via
the Vertx event bus.
23
Opening the
Pandora’s Box…
RFBox Internal Components
24
RFBox Internal Components – Level 1
25
Mini UPS, LEDs, Boxing
• Protection
• Coverage from Humidity and Heat
• Simple User Interface
(Controllable LED Button)
• Unit of Shipment
• Connectivity to Power, RS 485
Buses, IP, Printer
RFBox Control Scripts
• LED Blinking
• Voltage Monitoring, Controlled Shutdown, Prevent Startup
• Button Action Handling
• Respawning of failed processes
RFBox Symbian Linux
• Read-Only System FS
• Automatic Application Process Startup
• SSH Server
• TCP/IP Stack
RFBox Configurator
• Authentication
• Configuration file import
• 18n file import
• RFBOX main process jar updates and restarts
• Based on
• Java 8
• Will probably be replaced with rpm packaging/apt
RFBox Main Application
• Main RFBOX application
• Based on
• Java 8
• Vertx.io
RFBox Application Components
Business Value & Future
Imagine…
We have an installation base of thousands of
machines world wide…
Customers expect very fast reaction times…
Customers expect quality services…
So if you would know always…
…when machines failed,
…when machines show deviations
(=they will make troubles in the future),
…how much the machines have been used
and
…whatever else the collected data may
show…
…that would be nice, wouldn’t it?
BUT…
…the best thing is…
…you know it before your customer does!
The IOT Gateway Project
Global
IOT
Gateway
Summary
Summary
• All Started with a small fast prototype
• Building Industry Devices is hard and interdisciplinary
• Building Medical Devices is even harder
• Low Level programming with Java is fun
• If you have to deal with asynchronous events use a good library from scratch
• Vertx and Java 8 are awesome
