78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/*!
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* @file Adafruit_BMP183.h
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*/
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#ifndef ADAFRUIT_BMP183_H
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#define ADAFRUIT_BMP183_H
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#include "Arduino.h"
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#include "SPI.h"
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// use the 'default' datasheet numbers to test calculations
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#define BMP183_DEBUG 0 //!< Enables or disables debug mode
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/** Registers **/
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enum {
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BMP183_REGISTER_CAL_AC1 = 0xAA, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_AC2 = 0xAC, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_AC3 = 0xAE, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_AC4 = 0xB0, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_AC5 = 0xB2, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_AC6 = 0xB4, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_B1 = 0xB6, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_B2 = 0xB8, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_MB = 0xBA, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_MC = 0xBC, // R Calibration data (16 bits)
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BMP183_REGISTER_CAL_MD = 0xBE, // R Calibration data (16 bits)
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BMP183_REGISTER_CHIPID = 0xD0,
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BMP183_REGISTER_VERSION = 0xD1,
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BMP183_REGISTER_SOFTRESET = 0xE0,
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BMP183_REGISTER_CONTROL = 0xF4,
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BMP183_REGISTER_TEMPDATA = 0xF6,
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BMP183_REGISTER_PRESSUREDATA = 0xF6,
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BMP183_REGISTER_READTEMPCMD = 0x2E,
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BMP183_REGISTER_READPRESSURECMD = 0x34
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};
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/** Mode Settings **/
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typedef enum {
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BMP183_MODE_ULTRALOWPOWER = 0,
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BMP183_MODE_STANDARD = 1,
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BMP183_MODE_HIGHRES = 2,
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BMP183_MODE_ULTRAHIGHRES = 3
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} bmp183_mode_t;
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/*!
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* @brief Class that stores state and functions for interacting with
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* BMP183
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*/
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class Adafruit_BMP183 {
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public:
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Adafruit_BMP183(int8_t SPICS, SPIClass *theSPI = &SPI);
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Adafruit_BMP183(int8_t SPICLK, int8_t SPIMISO, int8_t SPIMOSI, int8_t SPICS);
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boolean
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begin(bmp183_mode_t mode = BMP183_MODE_ULTRAHIGHRES); // by default go highres
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float getTemperature();
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int32_t getPressure();
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float getAltitude(float sealevelPressure = 101325); // std atmosphere
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uint16_t readRawTemperature();
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uint32_t readRawPressure();
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SPIClass *_spi; //!< pointer to SPI object
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private:
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uint8_t SPIxfer(uint8_t x);
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uint8_t read8(uint8_t addr);
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uint16_t read16(uint8_t addr);
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void write8(uint8_t addr, uint8_t data);
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int8_t _cs, _clk, _miso, _mosi;
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uint8_t oversampling;
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int16_t ac1, ac2, ac3, b1, b2, mb, mc, md;
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uint16_t ac4, ac5, ac6;
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};
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#endif // ADAFRUIT_BMP183_H
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