TinyOS - Data Reading from Sensor on the MOTE SH11

Reading SH11C Sensor Data [Temperature and Humidity] from MDA300CA DAB Sensor

Sensor Programs

/*

Author : Bipin. Kunjumon

*/

SenseC.nc

#include "Timer.h"

#include "Wireless.h"

module SenseC

{

uses {

interface Boot;

interface Leds;

interface Timer<TMilli>;

interface Read<uint16_t> as TempRead;

interface Read<uint16_t> as HumRead;

interface AMSend;

interface SplitControl as AMControl;

interface Packet;

}

}

implementation

{

message_t packet;

bool locked;

wireless_msg_t rcm;

uint16_t temp;

uint16_t hum;

uint16_t counter=0;

// sampling frequency in binary milliseconds

#define SAMPLING_FREQUENCY 100

event void Boot.booted()

{

call AMControl.start();

call Timer.startPeriodic(5000);

}

event void AMControl.startDone(error_t err)

{

if (err == SUCCESS)

{

call Timer.startPeriodic(250);

}

else

{

call AMControl.start();

}

}

event void AMControl.stopDone(error_t err)

{

// nstall micaz mib510,/dev/ttyUSB0do nothing

}

event void Timer.fired()

{

call TempRead.read();

call HumRead.read();

counter++;

if (locked) {

return;

}

else {

wireless_msg_t* rcm = (wireless_msg_t*)call Packet.getPayload(&packet, sizeof(wireless_msg_t));

if (rcm == NULL) {

return;

}

rcm->counter = counter;

rcm->HumData=hum;

rcm->TempData=temp;

if (call AMSend.send(AM_BROADCAST_ADDR, &packet, sizeof(wireless_msg_t)) == SUCCESS) {

locked = TRUE;

}

}

}

/*

Temperature Sensor Reading … SensirionSht11C

*/

event void TempRead.readDone(error_t result, uint16_t data)

{

if (result == SUCCESS){

if (data & 0x0004)

call Leds.led2On();

else

call Leds.led2Off();

if (data & 0x0002)

call Leds.led1On();

else

call Leds.led1Off();

if (data & 0x0001)

call Leds.led0On();

else

call Leds.led0Off();

temp=data;

}

else

temp=0xffff;

}

/*

Humidity Sensor Reading … SensirionSht11C

*/

event void HumRead.readDone(error_t result, uint16_t data)

{

if (result == SUCCESS){

if (data & 0x0004)

call Leds.led2On();

else

call Leds.led2Off();

if (data & 0x0002)

call Leds.led1On();

else

call Leds.led1Off();

if (data & 0x0001)

call Leds.led0On();

else

call Leds.led0Off();

hum=data;

}

else

hum=0xffff;

}

event void AMSend.sendDone(message_t* bufPtr, error_t error) {

if (&packet == bufPtr) {

locked = FALSE;

}

}

}

*********************************************************************************

SenseAppC.nc

configuration SenseAppC

{

}

implementation

{

components SenseC, MainC, LedsC, new TimerMilliC(), new SensirionSht11C() as TempSensor;

components new SensirionSht11C() as HumSensor;

SenseC.Boot -> MainC;

SenseC.Leds -> LedsC;

SenseC.Timer -> TimerMilliC;

SenseC.TempRead -> TempSensor.Temperature;

SenseC.HumRead -> HumSensor.Humidity;

components new AMSenderC(AM_WIRELESS_MSG);

SenseC.AMSend->AMSenderC;

SenseC.Packet->AMSenderC;

components ActiveMessageC;

SenseC.AMControl->ActiveMessageC;

}

Header file

Wireless.h

************************************************************************************

Makefile

COMPONENT=SenseAppC

SENSORBOARD=mda300

include $(MAKERULES)

**********************************************************************************

Compile

make install micaz mib510,devicename

**********************************************************************************

We can receive this data by setup a Base station Receiver wireless mote device and read the data from its serial port

Serial Data Reading

java net.tinyos.tools.Listen -comm serial@devicename:platform