-
BMP085.h
- Committer:
- aguscahya
- Date:
- 2021-04-22
- Revision:
- 1:bd3f19ce9849
- Parent:
- 0:0b4c4632aeb0
File content as of revision 1:bd3f19ce9849:
/* * @file BMP085.h * @author Tyler Weaver * @author Kory Hill * * @section LICENSE * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * @section DESCRIPTION * * BMP085 I2C Temperature/Pressure/Altitude Sensor * * Max sample rate: 128 samples/second (temperature at 1/second) * * Datasheet: * * http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/Pressure/BST-BMP085-DS000-06.pdf */ #ifndef BMP085_H #define BMP085_H #include "mbed.h" class BMP085 { public: /** * The I2C address that can be passed directly to i2c object (it's already shifted 1 bit left). */ static const int16_t I2C_ADDRESS = 0xEE; //address of bmp085 /** * Constructor. * * Calls init function * * @param sda - mbed pin to use for the SDA I2C line. * @param scl - mbed pin to use for the SCL I2C line. */ BMP085(PinName sda, PinName scl); /** * Constructor that accepts external i2c interface object. * * Calls init function * * @param i2c The I2C interface object to use. */ BMP085(I2C &i2c) : i2c_(i2c) { init(); } ~BMP085(); /** * Sets the oss rate variables * Acceptable values = 1,2,4,8 * *@param oss the number of over sampling */ void set_oss(int oss); int32_t get_temperature(); int32_t get_pressure(); double get_altitude_m(); double get_altitude_ft(); /** * Initialize sensor and get calibration values */ void init(); void display_cal_param(Serial *pc); protected: private: I2C &i2c_; /** * The raw buffer for allocating I2C object in its own without heap memory. */ char i2cRaw[sizeof(I2C)]; // calculation variables int16_t AC1, AC2, AC3, B1, B2, MB, MC, MD; uint16_t AC4, AC5, AC6; int32_t UT,UP; // uncompressed temperature and pressure value int32_t X1, X2, B5, temperature; // get_temperature variables int32_t B6, B3, X3, pressure; // get_pressure variables uint32_t B4, B7; double altitude; // setting variables char oss_bit_; char oversampling_setting_; float conversion_time_; void get_cal_param(); // get calibration parameters void get_ut(); // get uncompressed temperature void get_up(); // get uncompressed pressure void write_char(char,char); int16_t read_int16(char); uint16_t read_uint16(char); void read_multiple(char, char*, int); }; #endif