Light Sense Lab.

1. Light Sense Lab. Read data from light(photo diode) sensor, display using oscilloscope.

2. ZigbeX Photo Diode

3. ZigbeXPhoto Diode • Photo diode CDS • named CDS is connected to INT0 &ADC0 on Atmega 128(8bit CPU) • CDS inputs resistance value varying on light strength • Output to ADC0 • Light Sensor Component • Photo component

4. Photo component • ADCC component • Photo component needs to uses upper level component ADCC.

5. Read Light strength • Ex. // upper level comp event ADC.dataReady(uint16_t data) { //data -> measured data … } // upper level comp. xxx_function() { call ADC.getData() … } Photo component

6. Using Oscilloscope

7. Oscilloscope Lab • Oscilloscope program • Oscilloscope program delivers data from mote to PC via “com” port • Oscilloscope Location • c:\Programfiles\UCB\cygwin\opt\tinyos‐1.x\contrib\zigbex\ Osilloscope • Oscilloscope.nc,OscilloscopeM.nc, &OscopeMsg.h .

8. Oscilloscope.nc • Oscilloscope.nc • Osilloscope components • UART Comm – connecting to PC • DemoSensorC- Get the light data • TimerC &LedsC configuration Oscilloscope { } implementation { components Main, OscilloscopeM, TimerC, LedsC, DemoSensorC as Sensor, UARTComm as Comm; Main.StdControl ‐> OscilloscopeM; Main.StdControl ‐> TimerC; OscilloscopeM.Timer ‐> TimerC.Timer[unique("Timer")]; OscilloscopeM.Leds ‐> LedsC; OscilloscopeM.ADC ‐> Sensor; … }

9. Serial Comm. • UARTComm component • UARTComm provides ReceiveMsg interface and SendMsg interface.

10. OscilloscopeM.nc • OscilloscopeM.nc (1) includes OscopeMsg; module OscilloscopeM { provides interface StdControl; uses {     … // interfaces } } implementation {    … // variables command result_t StdControl.init() {      … // initialization return SUCCESS; }

11. OscilloscopeM.nc • OscilloscopeM.nc (2) command result_t StdControl.start() { call SensorControl.start(); call Timer.start(TIMER_REPEAT, 125); call CommControl.start(); return SUCCESS; } command result_t StdControl.stop() {     … return SUCCESS; } event result_t Timer.fired() { return call ADC.getData(); }

12. OscilloscopeM.nc • OscilloscopeM.nc (3) async event result_t ADC.dataReady (uint16_t data) { struct OscopeMsg *pack; atomic { pack = (struct OscopeMsg *) msg[currentMsg].data; pack‐>data[packetReadingNumber++] = data; readingNumber++; dbg(DBG_USR1, "data_event\n"); if (packetReadingNumber == BUFFER_SIZE) { post dataTask(); } } if (data > 0x0300) call Leds.redOn(); else call Leds.redOff(); return SUCCESS; }

13. OscilloscopeM.nc • OscilloscopeM.nc (4) task void dataTask(){ struct OscopeMsg *pack; atomic { pack = (struct OscopeMsg *)msg[currentMsg].data; packetReadingNumber = 0; pack‐>lastSampleNumber = readingNumber; } pack‐>channel = 1; pack‐>sourceMoteID = TOS_LOCAL_ADDRESS; if (call DataMsg.send(TOS_UART_ADDR, sizeof(struct OscopeMsg), &msg[currentMsg])) { atomic { currentMsg ^= 0x1; } call Leds.yellowToggle(); } } event result_t DataMsg.sendDone (TOS_MsgPtr sent, result_t success) { return SUCCESS; }

14. Oscilloscope Lab.

15. Oscilloscope lab. 1 • Starts cygwin. Move to folder as follows • make zigbex cd /opt/tinyos‐1.x/contrib/zigbex cd Oscilloscope

16. Oscilloscope lab. 2 • ZigbeX Download • Run AVR studio at Windows • Tolol->auto connect-> browse main.hex located at • c:\Programfiles\UCB\cygwin\opt\tinyos‐1.x\contrib\zigbex\Oscilloscope\ build\ zigbex

17. Oscilloscope lab. 3 • Java application • When it is configured correctly, • Move to/opt/tinyos‐1.x/tools/javain Cygwin • Type as follows export MOTECOM=serial@COM1:57600 cd /opt/tinyos‐1.x/tools/java java net.tinyos.oscope.oscilloscope

18. Oscilloscope result • Result