bmp085.h File Reference

Bosch BMP085 driver interface. More...

#include "mcu_periph/i2c.h"
#include "std.h"

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Data Structures
struct	Bmp085Calib
struct	Bmp085

Typedefs
typedef bool_t(*	Bmp085EOC )(void)

Enumerations
enum	Bmp085Status {   BMP085_STATUS_UNINIT, BMP085_STATUS_IDLE, BMP085_STATUS_START_TEMP, BMP085_STATUS_READ_TEMP,   BMP085_STATUS_START_PRESS, BMP085_STATUS_READ_PRESS }

Functions
void	bmp085_read_eeprom_calib (struct Bmp085 *bmp)
void	bmp085_init (struct Bmp085 *bmp, struct i2c_periph *i2c_p, uint8_t addr)
void	bmp085_periodic (struct Bmp085 *bmp)
	Start new measurement if idle or read temp/pressure. More...
void	bmp085_event (struct Bmp085 *bmp)

Detailed Description

Bosch BMP085 driver interface.

Definition in file bmp085.h.

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Data Structure Documentation

struct Bmp085Calib

Definition at line 42 of file bmp085.h.

Data Fields
int16_t	ac1
int16_t	ac2
int16_t	ac3
uint16_t	ac4
uint16_t	ac5
uint16_t	ac6
int16_t	b1
int16_t	b2
int32_t	b5
int16_t	mb
int16_t	mc
int16_t	md

struct Bmp085

Definition at line 62 of file bmp085.h.

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Data Fields
struct Bmp085Calib	calib
volatile bool_t	data_available	data ready flag
Bmp085EOC	eoc	function to check End Of Conversion
struct i2c_periph *	i2c_p
struct i2c_transaction	i2c_trans
bool_t	initialized	config done flag
int32_t	pressure	pressure in Pascal
enum Bmp085Status	status	state machine status
int32_t	temperature	temperature in 0.1 deg Celcius
int32_t	up	uncompensated pressure
int32_t	ut	uncompensated temperature

Typedef Documentation

typedef bool_t(* Bmp085EOC)(void)

Definition at line 60 of file bmp085.h.

Enumeration Type Documentation

enum Bmp085Status

Enumerator
BMP085_STATUS_UNINIT
BMP085_STATUS_IDLE
BMP085_STATUS_START_TEMP
BMP085_STATUS_READ_TEMP
BMP085_STATUS_START_PRESS
BMP085_STATUS_READ_PRESS

Definition at line 33 of file bmp085.h.

Function Documentation

void bmp085_event

(

struct Bmp085 *

bmp

)

Definition at line 142 of file bmp085.c.

References Bmp085Calib::ac1, Bmp085Calib::ac2, Bmp085Calib::ac3, Bmp085Calib::ac4, Bmp085Calib::ac5, Bmp085Calib::ac6, Bmp085Calib::b1, Bmp085Calib::b2, bmp085_compensated_pressure(), bmp085_compensated_temperature(), BMP085_CTRL_REG, BMP085_OSS, BMP085_START_P3, BMP085_STATUS_IDLE, BMP085_STATUS_READ_PRESS, BMP085_STATUS_READ_TEMP, BMP085_STATUS_START_PRESS, BMP085_STATUS_UNINIT, i2c_transaction::buf, Bmp085::calib, Bmp085::data_available, Bmp085::i2c_p, Bmp085::i2c_trans, i2c_transmit(), I2CTransDone, I2CTransFailed, I2CTransSuccess, Bmp085::initialized, Bmp085Calib::mb, Bmp085Calib::mc, Bmp085Calib::md, Bmp085::pressure, i2c_transaction::slave_addr, Bmp085::status, i2c_transaction::status, Bmp085::temperature, TRUE, Bmp085::up, and Bmp085::ut.

Referenced by baro_bmp_event(), baro_event(), and bmp_baro_event().

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void bmp085_init	(	struct Bmp085 *	bmp,
		struct i2c_periph *	i2c_p,
		uint8_t	addr
	)

Definition at line 83 of file bmp085.c.

References bmp085_eoc_true(), BMP085_STATUS_UNINIT, Bmp085::data_available, Bmp085::eoc, FALSE, Bmp085::i2c_p, Bmp085::i2c_trans, I2CTransDone, Bmp085::initialized, i2c_transaction::slave_addr, Bmp085::status, and i2c_transaction::status.

Referenced by baro_bmp_init(), and baro_init().

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void bmp085_periodic

(

struct Bmp085 *

bmp

)

Start new measurement if idle or read temp/pressure.

Should run at < 40Hz unless eoc check function is provided. At ultra high resolution (oss = 3) conversion time is max 25.5ms.

Definition at line 108 of file bmp085.c.

References BMP085_CTRL_REG, BMP085_DAT_MSB, BMP085_START_TEMP, BMP085_STATUS_IDLE, BMP085_STATUS_READ_PRESS, BMP085_STATUS_READ_TEMP, BMP085_STATUS_START_PRESS, BMP085_STATUS_START_TEMP, i2c_transaction::buf, Bmp085::eoc, Bmp085::i2c_p, Bmp085::i2c_trans, i2c_transceive(), i2c_transmit(), i2c_transaction::slave_addr, and Bmp085::status.

Referenced by baro_bmp_periodic(), and baro_periodic().

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void bmp085_read_eeprom_calib

(

struct Bmp085 *

bmp

)

Definition at line 73 of file bmp085.c.

References BMP085_EEPROM_AC1, BMP085_STATUS_UNINIT, i2c_transaction::buf, FALSE, Bmp085::i2c_p, Bmp085::i2c_trans, i2c_transceive(), I2CTransDone, Bmp085::initialized, i2c_transaction::slave_addr, Bmp085::status, and i2c_transaction::status.

Referenced by baro_bmp_periodic(), and baro_periodic().

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