hanback electronics co., ltd. 저자권 보호됨 light sense lab. read data from light(photo diode)...

HANBACKELECTRONICS CO., LTD.

저자권 보호됨

Light Sense Lab.

Read data from light(photo diode) sensor, display using oscilloscope.


저자권 보호됨23年 4月 20日 2

ZigbeX Photo Diode



ZigbeX Photo 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



Photo component

• ADCC component– Photo component needs to uses upper level component

ADCC.

ADCC functions

Get data from ADC

ADC.getData() – read data from ADC port(command).

event ADC.dataReady(uint16_t data) – event delibers.



Read Light strength

• Ex.

// upper level comp.xxx_function(){ call ADC.getData() … }

// upper level comp event ADC.dataReady(uint16_t data){ //data -> measured data …}

Photo component



Using Oscilloscope



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 .



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; … }



Serial Comm.

• UARTComm component– UARTComm provides ReceiveMsg interface and SendMsg

interface.

UARTComm functions

ReceiveMsg event TOS_MsgPtr receive(TOS_MsgPtr m) – received from PC with event type, and message type is TOS_Msg

SendMsg send(...) – sense mode to PC, passes TOS_Msg sendDone(...) - send(...) - when done, tells by event type



OscilloscopeM.nc

• OscilloscopeM.nc (1)

includes OscopeMsg; module OscilloscopeM { provides interface StdControl; uses { … // interfaces }

} implementation { … // variables

command result_t StdControl.init() { … // initialization return SUCCESS; }



OscilloscopeM.nc


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(); }



OscilloscopeM.nc


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; }



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; }



Oscilloscope Lab.



Oscilloscope lab. 1• Starts cygwin. Move to folder as follows

• make zigbex

cd /opt/tinyos‐1.x/contrib/zigbex cd Oscilloscope



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



Oscilloscope lab. 3

• Java application– When it is configured correctly,– Move to /opt/tinyos‐1.x/tools/java in Cygwin– Type as follows

export MOTECOM=serial@COM1:57600 cd /opt/tinyos‐1.x/tools/java java net.tinyos.oscope.oscilloscope



Oscilloscope result

• Result

hanback electronics co., ltd. 저자권 보호됨 light sense lab. read data from light(photo diode)...

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