Web_of_Things_2013
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This document provides information on developing a Web of Things (WoT) including: - Discussing how to get started with programming "things" like Arduino, Raspberry Pi, and SunSpot boards. - Describing the complex process of programming microcontrollers, including using IDEs, compilers, debuggers, and loading code. - Outlining key questions to answer before starting a WoT project, such as the scope, use case, programming tools, and publishing infrastructure. - Providing an example WoT use case of using distributed sensing for applications like power grids, transport systems, and industrial automation.
![8
Stream Thinking
• procedure letStreamDataWork;
• var biglist: TStringList;
• begin
• biglist:= TStringlist.create;
• memo2.setfocus;
• repeat
• biglist.add('Value for mem[%d] enter : '
• +inttoStr(RandomRange(500,100000000)));
• biglist.add(getbigPI+getbigPI+getbigPI+getbigPI)
• with TJvMemoryInfos.Create(self) do begin
• writeln('Available Mem: '+FreeMemory);
• Free;
• end;
• until isKeypressed;
• writeln('elements of biglist '+intToStr(biglist.count))
• writeln('capacity of biglist '+intToStr(biglist.capacity))
• biglist.Free; //destruct
• end;](https://image.slidesharecdn.com/webofthings2013-131011085854-phpapp02/85/Web_of_Things_2013-8-320.jpg)
![17
Solution
http://www.softwareschule.ch/examples/305_webserver_arduino3.txt
76 with HTTPServer do begin
77 if Active then Free;
78 if not Active then begin
79 bindings.Clear;
80 bindings.Add;
81 bindings.items[0].Port:= APORT;
82 bindings.items[0].IP:= IPADDR; //'127.0.0.1';
83 Active:= true;
84 onCommandGet:= @HTTPServerGet;
85 PrintF('Listening HTTP on %s:%d.', [Bindings[0].IP,Bindings[0].Port]);
86 end;](https://image.slidesharecdn.com/webofthings2013-131011085854-phpapp02/85/Web_of_Things_2013-17-320.jpg)
Web_of_Things_2013
- 1. 1 Develop Web of Things Yes, we scan… http://en.wikipedia.org/wiki/Web_of_Things
- 2. 2 Web of No Things Tricorder… not (A v B) = not A ^ not B push a Session or pull a Service ? Redundant DNA Helix Hertz App or DigiCam UseCase? Build Systems you can count on http://en.wikipedia.org/wiki/Anti-pattern http://en.wikipedia.org/wiki/Wireless_Sens or_Networks
- 3. 3 Web of Words Fest codiert in der Erden Steht die App, aus Bits gebrannt. Heute muß die Software werden, Frisch, Entwickler! seid zur Hand. maXbox http://en.wikipedia.org/wiki/RFID Chess Roboter Topic – First Web of Things
- 4. 4 Design & Runtime Technical Requirements User Requirements Q-Requirements Business Model Architectural Pattern Functional Pattern reference, links, esper Packages, Seq, IAD configuration Processing, Rules, GUI Settings, Objects, Options, Profiles Use Case, Activity WoT Code Layers Study, Concept event stream data layer monitoring source code annotations aspects, constraints DB, XML, properties literals, res, values Developer, Admin, User
- 5. 5 How to start? Do you want to work with “things” that are under your direct control? Things: • Easy to use with a wide community support are Arduino, Raspberry and SunSpot. • Crossbow, Libellium, Sensinode, etc. are also possible solutions but may require more effort. • For very specific solutions you may need to go for hardware design.
- 6. 6 Programming the Things • Complex and time consuming process • tool chain: IDE, compiler, debugger • microcontroller is programmed and executes the code, radio chip is not programmed but controlled by microcontroller, usually via SPI (Serial Peripheral Interface Bus) which sets/reads registers • compiled code is loaded to the microcontroller using bootloader or JTAG (Joint Test Action Group) • protocol stack may be precompiled and available through API or available as library, operating system (not needed for simple tasks), virtual machine (optional) • http://www.mikrocontroller.net/articles/JTAG
- 7. 7 Decison Process • Before starting, the following questions should be answered: • What is the scope or application? • •Monitoring measurements? • What is the scenario Use Case? • •A thing with embedded web service? • •A set of things connected through a gateway? • What programming language or IDE? • •Options: C, Pascal, Java, C#, Processing, ADT • What is the publishing infrastructure? • •None, custom, third party.
- 8. 8 Stream Thinking • procedure letStreamDataWork; • var biglist: TStringList; • begin • biglist:= TStringlist.create; • memo2.setfocus; • repeat • biglist.add('Value for mem[%d] enter : ' • +inttoStr(RandomRange(500,100000000))); • biglist.add(getbigPI+getbigPI+getbigPI+getbigPI) • with TJvMemoryInfos.Create(self) do begin • writeln('Available Mem: '+FreeMemory); • Free; • end; • until isKeypressed; • writeln('elements of biglist '+intToStr(biglist.count)) • writeln('capacity of biglist '+intToStr(biglist.capacity)) • biglist.Free; //destruct • end;
- 9. 9 About Rules • CA1303: Do not pass literals as localized parameters • public void TimeMethod(int hour, int minute) { if (hour < 0 || hour > 23) { MessageBox.Show( "The valid range is 0 - 23."); //CA1303 fires because the parameter for method Show is Text } • CA1302: Do not hardcode locale specific strings • static void Main() { string string0 = "C:"; • PMD: Avoid duplicate literals (string or numeric)
- 10. 10 Timeline - Lord of the Things • Description and Technologies • Web 1.0 Static HTML pages (web as we first learned it) HTML, HTTP • Web 1.5 Dynamic HTML content (web as we know it) Client side (JavaScript, DHTML, Flash, …), server side (CGI, PHP, Perl, ASP/.NET, JSP, …) • Web 2.0 Participatory information sharing, interoperability, user-centered design, and collaboration on the World Wide Web (web of people) weblogs, social bookmarking, social tagging, wikis, podcasts, RSS feeds, many-to-many publishing, web services, … URI, XML, RDF, OWL, SparQL, … • Web 3.0 …definitions vary a lot – from Full Semantic Web to AI • (web as we would need it) http://en.wikipedia.org/wiki/Web_3.0#Web_3.0 • • Web of Things Everyday devices and objects are connected by fully integrating them to the Web. (web as we would like it) Well-accepted and understood standards and blueprints (such as URI, HTTP, REST, Atom, etc.) http://en.wikipedia.org/wiki/Web_of_Things • Singularity Web of Rings (Thanks to Kurzweil)
- 11. 11 Timeline II •A Short History of Time • 1991 Application Program • 1995 Application • 1998 Applet • 2010 App • 2015 A (Android, Arduino, Apache, ARM)
- 12. 12 WoT Use Case Motivated by an increased interest of physical computing and embedded in automatic management of large systems • •Power grids • •Transport systems • •Water distribution • •Logistics • •Industrial automation, 3D-Printer • •Health, example Schiller Poster • •Environmental intelligence • •Academic, example maXbox • •Distributed sensing infrastructure
- 13. 13 Web of Things Environment “Apps and Services glue with Things”. DeviceDevice ToolTool AppApp FrameworkFramework Processing Processing ArchitecturArchitectur LibLib DataData CodeCode Glue Glue Com Com
- 17. 17 Solution http://www.softwareschule.ch/examples/305_webserver_arduino3.txt 76 with HTTPServer do begin 77 if Active then Free; 78 if not Active then begin 79 bindings.Clear; 80 bindings.Add; 81 bindings.items[0].Port:= APORT; 82 bindings.items[0].IP:= IPADDR; //'127.0.0.1'; 83 Active:= true; 84 onCommandGet:= @HTTPServerGet; 85 PrintF('Listening HTTP on %s:%d.', [Bindings[0].IP,Bindings[0].Port]); 86 end;
- 18. 18 Solution 361_heartbeat_wave.txt http://en.wikipedia.org/wiki/Household_appliances 54 if uppercase(localcom) = uppercase('/LED') then begin 55 cPort.WriteStr('1') 56 writeln(localcom+ ': LED on'); 57 RespInfo.ContentText:= getHTMLContentString('LED is: ON'); 58 end else 59 if uppercase(localcom) = uppercase('/DEL') then begin 60 cPort.WriteStr('A'); 61 writeln(localcom+ ': LED off'); 62 RespInfo.ContentText:= getHTMLContentString('LED is: OFF') 63 end;
- 19. 19 Solution Tutorial: http://www.softwareschule.ch/download/maxbox_starter18.pdf void setup() { // initialize digital pin as an output. pinMode(ledPin11, OUTPUT); Serial.begin(9600); void loop () { val = Serial.read(); //read serial port if (val !=-1){ if (val=='1'){ digitalWrite(ledPin1,HIGH); } else if (val=='A'){ digitalWrite(ledPin1,LOW); }
- 20. 20 The End is Flexibility Personal Dependency Inversion – Programming for Change
- 21. 21 Thanks! Links to Rights the source is the code http://www.softwareschule.ch/maxbox.htm http://sourceforge.net/projects/maxbox http://sourceforge.net/apps/mediawiki/maxbox/ http://en.wikipedia.org/wiki/Arduino http://www.softwareschule.ch/download/webofthings2013.pdf HTTP://SENSORLAB.IJS.SI http://carolinafortuna.com/web-of-things-tutorial/
- 22. 22 Code the World hack the earth