barometric pressure sensor BMP085 http://mbed.org/users/okini3939/notebook/barometric-pressure-sensor-bmp085/ http://mbed.org/users/okini3939/notebook/weatherduino-on-mbed/
Fork of BMP085 by
BMP085.h
- Committer:
- whatnick
- Date:
- 2015-05-25
- Revision:
- 3:9c7696c84807
- Parent:
- 2:5e2b1f3c0a6a
File content as of revision 3:9c7696c84807:
/*
* mbed library to use a Bosch Sensortec BMP085/BMP180 sensor
* Copyright (c) 2010 Hiroshi Suga
* Released under the MIT License: http://mbed.org/license/mit
*/
/** @file BMP085.h
* @brief mbed library to use a Bosch Sensortec BMP085/BMP180 sensor
* barometric pressure sensor BMP085/BMP180 (Bosch Sensortec)
* interface: I2C digital
*/
#ifndef BMP085_H
#define BMP085_H
#include "mbed.h"
/*
* @brief Pressure at sea level
*/
#define SEA_PRES 1013.25f
/**
* @brief over sampling setting
*/
enum BMP085_oss {
BMP085_oss1 = 0, ///< ultra low power (1 time)
BMP085_oss2 = 1, ///< standard (2 times)
BMP085_oss4 = 2, ///< high resolution (4 times)
BMP085_oss8 = 3 ///< ultra high resolution (8 times)
};
/**
* @brief BMP085 class
*/
class BMP085 {
public:
BMP085(PinName p_sda, PinName p_scl, BMP085_oss p_oss = BMP085_oss1);
BMP085(I2C& p_i2c, BMP085_oss p_oss = BMP085_oss1);
float get_temperature();
float get_pressure();
void update();
protected:
void init(BMP085_oss);
unsigned short twi_readshort (int, int);
unsigned long twi_readlong (int, int);
void twi_writechar (int, int, int);
I2C i2c;
float temperature;
float pressure;
private:
short ac1, ac2, ac3, b1, b2, mb, mc, md, oss;
unsigned short ac4, ac5, ac6;
};
#endif
