File content as of revision 0:5ace1cc7a9f2:

#ifndef _BME280_H_
#define _BME280_H_
#include "mbed.h"

#define BME280_U32_t uint32_t
#define BME280_S32_t int32_t
#define BME280_S64_t int64_t

/**
 * BME280 Environmental sensor
 *
 * Note: Interface selection is done by the value of CSB (chip select)
 * if CSB is pulled-up, I2C interface is active.
 * if CSB is pulled-down, SPI interface is active.
 * After CSB has been pulled down once (regardless of whether any clock cycle occurred)
 * the I2C interface is disabled until the next power-on-reset.
 */

class BME280
{
public:
 /**
  * BME280 I2C Interface
  *
  * @param sda SDA pin
  * @param scl SCL pin
  * @param addr address of the I2C peripheral
  */
BME280(PinName sda, PinName scl, int addr) ;

 /**
  * BME280 SPI Interface
  *
  * @param sck  SPI SCKL pin
  * @param miso SPI Master In Slave Out pin
  * @param mosi SPI Master Out Slave In pin
  * @param cs   SPI Chip Select pin
  */
BME280(PinName sck, PinName miso, PinName mosi, PinName cs) ;

~BME280() ;

void reset(void) ; 
void init(void) ;
void trigger(void) ; /* forced mode */
uint8_t  busy(void) ;

uint8_t getID(void) ;

void readData(uint8_t data[]) ;
  
float getTemperature(uint8_t data[]) ;
float getHumidity(uint8_t data[]) ;
float getPressure(uint8_t data[]) ;

private:
  SPI *m_spi ;
  I2C *m_i2c ;
  DigitalOut *m_cs ;
  int m_addr ;
  BME280_S32_t t_fine ;
  
  uint16_t dig_T1, dig_T2, dig_T3 ;
  uint16_t dig_P1, dig_P2, dig_P3 ; 
  uint16_t dig_P4, dig_P5, dig_P6 ; 
  uint16_t dig_P7, dig_P8, dig_P9 ;
  uint16_t dig_H1, dig_H2, dig_H3 ;
  uint16_t dig_H4, dig_H5, dig_H6 ;

  void i2c_readRegs(int addr, uint8_t *data, int len) ;
  void i2c_writeRegs(uint8_t *data, int len) ;
  void spi_readRegs(int addr, uint8_t *data, int len) ;
  void spi_writeRegs(uint8_t *data, int len) ;
  void readRegs(int addr, uint8_t *data, int len) ;
  void writeRegs(uint8_t *data, int len) ;
} ;
#endif /* _BME280_H_ */