Sun Spot Talk
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This is the presentation I used to give a talk on Sun SPOTs at the Technical Seminar, RNSIT, Bangalore, INDIA. 28/02/2009
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The document discusses Sun SPOT (Small Programmable Object Technology), a small programmable wireless device developed by Sun Microsystems. It provides an overview of Sun SPOT, demonstrating several applications developed using it. The document discusses how Sun SPOT allows for quick and safe development separated from low-level hardware, its open source software and hardware platform, and how Sun hopes it will generate more data and usage of Java technologies. It provides details on the Sun SPOT device and programming process, and shows several example applications and research projects developed using Sun SPOT. Contact information is given for two representatives to learn more about Sun SPOT development.
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Share is good. if youhave any question, feel free to ask me: pdeng -a- pgrad dot unimelb dot edu dot au.
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The design emphasis for supercomputing systems has moved from raw performance to performance-per-watt, and as a result, supercomputing architectures are converging on processors with wide vector units and many processing cores per chip. Such processors are capable of performant image rendering purely in software. This improved capability is fortuitous, since the prevailing homogeneous system designs lack dedicated, hardware-accelerated rendering subsystems for use in data visualization. Reliance on this “software-defined” rendering capability will grow in importance since, due to growing data sizes, visualizations must be performed on the same machine where the data is produced. Further, as data sizes outgrow disk I/O capacity, visualization will be increasingly incorporated into the simulation code itself (in situ visualization).
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PCCC21：日本電気株式会社「一台何役？SX-Aurora TSUBASA最新情報」
PCクラスタコンソーシアムの開催する PCCC21「『PCクラスタ』これからの10年」（設立20周年記念PCクラスタシンポジウム）会員展示として公開中のスライドです。
詳細は下記のWebサイトへお越しください。
▽PCCC21「『PCクラスタ』これからの10年」（2021年12月8日～9日）
https://www.pccluster.org/ja/event/pccc21/
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Sun Spot Talk
- 14. The Squawk virtual machine
- 15. SunSPOT build and deploy process SunSPOT build Squawk suite converter javac .class .suite .bin deploy
- 18. But – why not embedded Linux? (2) “ A lightweight configuration of embedded Linux requires 250 KB of ROM and 512 KB of RAM ” Arcticle on Java on the Bare Metal of Wireless Sensor Devices
- 20. Design Overview
- 22. Sun SPOT Radio Communication Example: A Java Snippet for Sending try { // Broadcast a message on port 52 DatagramConnection conn = (DatagramConnection) Connector.open(“radiogram://broadcast:52”); Datagram packet = conn.newDatagram(conn.getMaximumLength()); packet.writeInt(someValue); conn.send(packet); } catch (IOException ioe) { /* Handler */ }
- 23. Sun SPOT Radio Communication Example: A Java Snippet for Receiving try { // Listen on port 52 DatagramConnection conn = (DatagramConnection) Connector.open(“radiogram://:52”); Datagram packet = (Radiogram) listenerConn.newDatagram(0); conn.receive(packet); //get the address of the sending SPOT String address= packet.getAddress(); int rssi = packet.getRssi(); //get signal strength } catch (IOException ioe) { /* Handler */ }
- 24. Sun SPOT Sensor Code Snippet RangeInput light = SensorBoard.getLightSensor(); RangeInput temp = SensorBoard.getTemperatureSensor(); ISwitch switch1 = SensorBoard.getSwitch1(); Accelerometer3D accel = SensorBoard.getAccelerometer(); // Set accelerometer to 6G scalling ( (LIS3L02AQAccelerometer) accel).set6GSScale(); SensorBoardColouredLED led1 = SensorBoardColouredLED.getLed1(); led1.setOn(); // Change LED colour as SPOT is tilted int xAccel = accel.getX().getValue(); if(xAccel > 0) led1.setRGB(xAccel, 0, 0); else led1.setRGB(0, 0, xAccel);
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