hello all
I am working for a project recently that uses temperature and vibration sensors
with i2c interface. I am trying to connect lm75 temperature sensor to my iris
node and read the temperature. the address of this device is 0x48 as listed at
the data sheet. I wrote the following program:
BlinkToRadioAppC.nc
#include <Timer.h>
#include "BlinkToRadio.h"
configuration BlinkToRadioAppC {
}
implementation {
components MainC;
components LedsC;
components BlinkToRadioC as App;
components new Atm128I2CMasterC();
App.Boot -> MainC;
App.Leds -> LedsC;
App.Resource -> Atm128I2CMasterC;
App.I2CPacket -> Atm128I2CMasterC;
}
BlinkToRadioC.nc
#include <Timer.h>
#include "BlinkToRadio.h"
#include <I2C.h>
module BlinkToRadioC {
uses interface Boot;
uses interface Leds;
uses interface I2CPacket<TI2CBasicAddr>;
uses interface Resource; //I2C bus resource
}
implementation {
uint16_t counter;
uint8_t a[2];
//a[0] = 0x00;
//a[1] = 0x00;
void setLeds(uint8_t val) {
if (val & 0x01)
call Leds.led0On();
else
call Leds.led0Off();
if (val & 0x04)
call Leds.led1On();
else
call Leds.led1Off();
if (val & 0x08)
call Leds.led2On();
else
call Leds.led2Off();
}
event void Boot.booted() {
if(call Resource.request() == SUCCESS){
}
}
// the begin of writing and reading from I2c
event void Resource.granted() {
if (call I2CPacket.read(I2C_START | I2C_STOP, 0x48, 2, a) == SUCCESS)
call
Leds.led1Toggle()
}
async event void I2CPacket.readDone(error_t error, uint16_t addr, uint8_t
length, uint8_t* data) {
call Leds.led2Toggle();
call Resource.release();
}
async event void I2CPacket.writeDone(error_t error, uint16_t addr, uint8_t
length, uint8_t* data) {
//call Leds.led2Toggle();
}
}
I always get led 1 on so the resource request process is successful but led 2
didnot become on so the read done event is never raised.
Is there a problem or some errors in my program that causes that to happen?
waiting for your response
thanks
Mohammed Tarek
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