Barometric Sensor [HiTechnic]

Files
file	hitechnic-barometer.h
	HiTechnic Barometric Sensor driver.
Defines
#define	HTBM_I2C_ADDR   0x02
#define	HTBM_OFFSET   0x42
#define	HTBM_TEMP_HIGH   0x00
#define	HTBM_TEMP_LOW   0x01
#define	HTBM_PRES_HIGH   0x02
#define	HTBM_PRES_LOW   0x03
Functions
long	HTBMreadMInHg (tSensors link)
float	HTBMreadhPa (tSensors link)
float	HTBMreadPsi (tSensors link)
float	HTBMreadTemp (tSensors link)
float	HTBMreadTempF (tSensors link)
Variables
const float	mInHgtohPa = 0.03386389
const float	mInHgtoPsi = 0.491098/1000
tByteArray	HTBM_I2CRequest
tByteArray	HTBM_I2CReply

---

Detailed Description

HiTechnic Barometric Sensor

---

Define Documentation

#define HTBM_I2C_ADDR   0x02

Barometric sensor device address

Definition at line 44 of file hitechnic-barometer.h.

#define HTBM_OFFSET   0x42

Offset for data registers

Definition at line 45 of file hitechnic-barometer.h.

#define HTBM_PRES_HIGH   0x02

Pressure high byte

Definition at line 48 of file hitechnic-barometer.h.

#define HTBM_PRES_LOW   0x03

Pressure low byte

Definition at line 49 of file hitechnic-barometer.h.

#define HTBM_TEMP_HIGH   0x00

Temperature high byte

Definition at line 46 of file hitechnic-barometer.h.

#define HTBM_TEMP_LOW   0x01

Temperature low byte

Definition at line 47 of file hitechnic-barometer.h.

---

Function Documentation

float HTBMreadhPa

(

tSensors

link )

Read the current atmospheric pressure in hecto Pascal

Parameters:

link	the HTBM port number

Returns:

pressure in hecto Pascal, -255 if something went wrong

Examples:

hitechnic-barometer-test1.c.

Definition at line 87 of file hitechnic-barometer.h.

long HTBMreadMInHg

(

tSensors

link )

Read the current atmospheric pressure in 1/1000th inch Hg (mercury)

Parameters:

link	the HTBM port number

Returns:

pressure in 1/1000th inch Hg (mercury), -255 if something went wrong

Examples:

benedettelli-nxt2wifi-test1.c, and hitechnic-barometer-test1.c.

Definition at line 68 of file hitechnic-barometer.h.

float HTBMreadPsi

(

tSensors

link )

Read the current atmospheric pressure in pounds per square inch

Parameters:

link	the HTBM port number

Returns:

pressure in pounds per square inch, -255 if something went wrong

Examples:

hitechnic-barometer-test1.c.

Definition at line 97 of file hitechnic-barometer.h.

float HTBMreadTemp

(

tSensors

link )

Read the current air temperature in degrees Celcius

Parameters:

link	the HTBM port number

Returns:

current air temperature in degrees Celcius, -255 if something went wrong

Examples:

benedettelli-nxt2wifi-test1.c, and hitechnic-barometer-test1.c.

Definition at line 107 of file hitechnic-barometer.h.

float HTBMreadTempF

(

tSensors

link )

Read the current air temperature in degrees Fahrenheit

Parameters:

link	the HTBM port number

Returns:

the current air temperature in degrees Fahrenheit, -255 if something went wrong

Examples:

hitechnic-barometer-test1.c.

Definition at line 130 of file hitechnic-barometer.h.

---

Variable Documentation

tByteArray HTBM_I2CReply

Array to hold I2C reply data

Definition at line 61 of file hitechnic-barometer.h.

tByteArray HTBM_I2CRequest

Array to hold I2C command data

Definition at line 60 of file hitechnic-barometer.h.

const float mInHgtohPa = 0.03386389

Definition at line 51 of file hitechnic-barometer.h.

const float mInHgtoPsi = 0.491098/1000

Definition at line 52 of file hitechnic-barometer.h.