This file contains all function implementations for the BMP085 API. More...

#include "bmp085/bmp085_bst.h"

Include dependency graph for bmp085_bst.c:

Functions
int	bmp085_get_cal_param (void)
long	bmp085_get_pressure (unsigned long up)
short	bmp085_get_temperature (unsigned long ut)
unsigned long	bmp085_get_up (void)
unsigned short	bmp085_get_ut (void)
int	bmp085_init (bmp085_t *bmp085)
int	smd500_get_cal_param (void)
Variables
bmp085_t *	p_bmp085 = 0

Detailed Description

This file contains all function implementations for the BMP085 API.

Introduction

BMP085 digital Altimeter Programming Interface The BMP085 API enables quick access to Bosch Sensortec's digital altimeter. The only mandatory steps are:

1. linking the target application's communication functions to the API (BMP085_WR_FUNC_PTR, BMP085_RD_FUNC_PTR)

2. calling the bmp085_init() routine, which initializes all necessary data structures for using all functions

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License and the following stipulations. The Apache License , Version 2.0 is applicable unless otherwise stated by the stipulations of the disclaimer below.

You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Disclaimer

Common: This Work is developed for the consumer goods industry. It may only be used within the parameters of the respective valid product data sheet. The Work provided with the express understanding that there is no warranty of fitness for a particular purpose. It is not fit for use in life-sustaining, safety or security sensitive systems or any system or device that may lead to bodily harm or property damage if the system or device malfunctions. In addition, the Work is not fit for use in products which interact with motor vehicle systems. The resale and/or use of the Work are at the purchaser's own risk and his own responsibility. The examination of fitness for the intended use is the sole responsibility of the Purchaser.

The purchaser shall indemnify Bosch Sensortec from all third party claims, including any claims for incidental, or consequential damages, arising from any Work or Derivative Work use not covered by the parameters of the respective valid product data sheet or not approved by Bosch Sensortec and reimburse Bosch Sensortec for all costs in connection with such claims.

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Engineering Samples are marked with an asterisk (*) or (e). Samples may vary from the valid technical specifications of the product series. They are therefore not intended or fit for resale to third parties or for use in end products. Their sole purpose is internal client testing. The testing of an engineering sample may in no way replace the testing of a product series. Bosch Sensortec assumes no liability for the use of engineering samples. By accepting the engineering samples, the Purchaser agrees to indemnify Bosch Sensortec from all claims arising from the use of engineering samples.

Special: This Work and any related information (hereinafter called "Information") is provided free of charge for the sole purpose to support your application work. The Woek and Information is subject to the following terms and conditions:

The Work is specifically designed for the exclusive use for Bosch Sensortec products by personnel who have special experience and training. Do not use this Work or Derivative Works if you do not have the proper experience or training. Do not use this Work or Derivative Works fot other products than Bosch Sensortec products.

The Information provided is believed to be accurate and reliable. Bosch Sensortec assumes no responsibility for the consequences of use of such Information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Bosch. Specifications mentioned in the Information are subject to change without notice.

Details.

Definition in file bmp085_bst.c.

Function Documentation

int bmp085_get_cal_param ( void )

read out parameters cal_param from BMP085 memory

Returns:: result of communication routines

Definition at line 178 of file bmp085_bst.c.

long bmp085_get_pressure ( unsigned long up )

calculate pressure from up up was read from the device via I2C and fed into the right calc path for either SMD500 or BMP085 In case of SMD500 value averaging is done in this function, in case of BMP085 averaging is done through oversampling by the sensor IC

Parameters:

ut	parameter ut read from device

Returns:: temperature in steps of 1.0 Pa

See also:: bmp085_read_up()

Definition at line 279 of file bmp085_bst.c.

short bmp085_get_temperature ( unsigned long ut )

calculate temperature from ut ut was read from the device via I2C and fed into the right calc path for either SMD500 or BMP085

Parameters:

ut	parameter ut read from device

Returns:: temperature in steps of 0.1 deg celsius

See also:: bmp085_read_ut()

Definition at line 233 of file bmp085_bst.c.

unsigned long bmp085_get_up ( void )

read out up for pressure conversion depending on the oversampling ratio setting up can be 16 to 19 bit

Returns:: up parameter that represents the uncompensated pressure value

Definition at line 372 of file bmp085_bst.c.

unsigned short bmp085_get_ut ( void )

read out ut for temperature conversion

Returns:: ut parameter that represents the uncompensated temperature sensors conversion value

Definition at line 328 of file bmp085_bst.c.

int bmp085_init ( bmp085_t * bmp085 )

initialize BMP085 / SMD500

This function initializes the BMP085 pressure sensor/ the successor SMD500 is also supported. The function automatically detects the sensor type and stores this for all future communication and calculation steps

Parameters:

*bmp085_t pointer to bmp085 device data structure

Returns:: result of communication routines

Definition at line 98 of file bmp085_bst.c.

int smd500_get_cal_param ( void )

read out parameters cal_param from SMD500 memory This routine generates parameters from bitsliced data

Returns:: result of communication routines

Definition at line 209 of file bmp085_bst.c.

Variable Documentation

bmp085_t* p_bmp085 = 0

pointer to SMD500 / BMP085 device area

Definition at line 86 of file bmp085_bst.c.

Functions

Variables

Detailed Description

Introduction

License

Disclaimer

Function Documentation

Variable Documentation