1. Programming Assignment 2 CSE535: Mobile Computing (Fall 2010)

2. Environmental Setup IssuesEnvironmental Setup Issues  Go to your home directory. Open.bash_profile or.bashrc  Add necessary environmental variables Ex) export TOSROOT=“/opt/tinyos-2.x”  Important! You need to add the current directory (.) into CLASSPATH  Check these variables using “echo” command. ex) echo $TOSROOT  Run “tos-check-env” to check all other environments.

3. Multiple JRE installation IssuesMultiple JRE installation Issues  Check the location of Java library tos-locate-jre --jni  Copy toscomm.dll and getenv.dll from \lib\tinyos into the directory you found using tos-locate-jre --jni

4. Compile and Install a codeCompile and Install a code  make telosb  Compile an application  make telosb install.(node id) bsl,(Comport)  Ex) make telosb install.5 bsl,/dev/ttyUSB0  Type “motelist “ to check the com port number

5. Overall System ArchitectureOverall System Architecture TelosB (BaseStation) PC (Java App) TelosB (Sensing) Id = 1 TelosB (Sensing) Id = 2 USBUSB EXAMPLE: see TestSerial.java under $TOSROOT/apps/tests/TestSerial EXAMPLE: $TOSROOT/apps/BaseStation EXAMPLE: $TOSROOT/apps/Oscilloscope Sampler.zip in google group Zigbee

6. Header fileHeader file typedef nx_struct SenseMsg { nx_uint16_t sourceMoteID; // Queried mote id nx_uint16_t datatype; // Data type = temperature, humidity, // or light nx_uint16_t data; // Sensingdata } SenseMsg; enum { AM_SENSEMSG = 100, };

7. AM (Active Message) formatAM (Active Message) format  Destination address (2 bytes)  Link source address (2 bytes)  Message length (1 byte)  Group ID (1 byte)  Active Message handler type (1 byte)  Payload (up to 28 bytes):  Use SenseMsg structure Call AMSend.getPayload(……)

8. AM_SENSEMSG = 100AM_SENSEMSG = 100 In configuration file (~AppC.nc) components new AMSenderC(AM_SENSEMSG); components new AMReceiverC(AM_SENSEMSG); In java file (~Msg.java) /** The Active Message type associated with this message. */ public static final int AM_TYPE = 100;

9. Getting multiple packets for one request  You might get multiple packets after sending one request  Check the sender id and data type whether they match with the request you sent.  Check whether there are other telosb motes with the same ID.  Check whether you create multiple listeners. public TestSerial(MoteIF moteIF) { this.moteIF = moteIF; this.moteIF.registerListener(new TestSerialMsg(), this); } // Invoked when a message arrives public void messageReceived(int toaddr, Message msg) {... }

10. Creating multiple listenersCreating multiple listeners MoteIF mif = new MoteIF(phoenix); TestSerial serial = new TestSerial(mif); While (!quit) { …….. serial.sendPackets(); …….. } MoteIF mif = new MoteIF(phoenix); While (!quit) { TestSerial serial = new TestSerial(mif); ……… serial.sendPackets(); ……… } Create listener

11. Tips for using TestSerial.javaTips for using TestSerial.java  Change the header file (TestSerial.h)  Type “make telosb”  Makefile includes TestSerialMsg.java: mig java -target=null $(CFLAGS) -java- classname=TestSerialMsg TestSerial.h test_serial_msg -o $@  Check TestSerialMsg.java You will see set_sourceMoteID(), get_sourceMoteID() etc.