Hi All,
I am attempting to use the I2CPacket interface to write from the
TelosB mote to a pressure sensor (Bosch SensorTec BMP085). However,
whenever I try to write to the BMP pressure sensor, the writeDone
event indicates that the write failed (error == fail). Are there any
major flaws in my code? Am I forgetting to initialize some component,
request some resource, or configure some pins? I am new to TinyOS and
I would love some advice. The relevant part of my code is below (it is
a modified Oscilloscope file). As it is right now, LEDs 1 and 2 turn
on, but not LED 0.
Also, is there any easy way to debug code for TinyOS or the TelosB
mote(other than using the three LEDs)?
Thanks,
Ed Sullivan
/*********OscilloscopeAppC.nc*********/
////////////////////////////////////////////////////////////////////////////////////
configuration OscilloscopeAppC { }
implementation
{
components OscilloscopeC, MainC, LedsC, new TimerMilliC() as
Timer2, new Msp430I2CC();
OscilloscopeC.Boot -> MainC;
OscilloscopeC.Timer2 -> Timer2;
OscilloscopeC.Leds -> LedsC;
OscilloscopeC.I2CPacket -> Msp430I2CC;
OscilloscopeC.Resource -> Msp430I2CC;
}
/***********OscilloscopeC.nc************/
//////////////////////////////////////////////////////////////////////////////////////////
#include "Timer.h"
#include "Oscilloscope.h"
#define BMP085_ADDR_WRITE 0x77
#define BMP085_ADDR_READ 0x77
module OscilloscopeC @safe()
{
uses {
interface Boot;
interface Timer<TMilli> as Timer2;
interface Leds;
interface I2CPacket<TI2CBasicAddr>; // BMP085 uses 7-bit address option
interface Resource;
}
}
implementation
{
event void Boot.booted() {
call Leds.led0Off();
call Resource.request();
}
event void Resource.granted() {
call Leds.led0Off();
call Leds.led1Off();
call Leds.led2Off();
call Timer2.startOneShot(15000);
}
event void Timer2.fired(){
uint8_t addressCalibrate;
uint8_t * bmp085_addr_ac1_msb_22;
addressCalibrate = 0xAA;
bmp085_addr_ac1_msb_22 = &addressCalibrate;
if (call I2CPacket.write(I2C_START | I2C_STOP,
BMP085_ADDR_WRITE, 1, bmp085_addr_ac1_msb_22) != SUCCESS) {
call Leds.led0On();
}
}
async event void I2CPacket.writeDone(error_t error, uint16_t addr,
uint8_t length, uint8_t* data){
call Leds.led1On();
if (error == FAIL) {
call Leds.led2On();
}
}
async event void I2CPacket.readDone(error_t error, uint16_t
addr, uint8_t length, uint8_t* data){}
}
Thanks,
Ed
--
Edward Sullivan
[email protected]
NASA Ames Sustainability Base, Student Intern
WSBF-FM Clemson, Computer Engineer
Cell: (240) 383-0498
CUID: 749791137
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