BME280.h

00001 #ifndef BME280_H
00002 #define BME280_H
00003 
00004 #include "mbed.h"
00005 
00006 #define BME280_ADDR_H       (0x77)
00007 #define BME280_ADDR_L       (0x76)
00008 
00009 #define BME280_CTRL_HUM     (0xF2)
00010 #define BME280_CTRL_MEAS    (0xF4)
00011 
00012 typedef enum {
00013     BME280_SAMPLING_X1    = 0x01,
00014     BME280_SAMPLING_X2    = 0x02,
00015     BME280_SAMPLING_X4    = 0x03,
00016     BME280_SAMPLING_X8    = 0x04,
00017     BME280_SAMPLING_X16   = 0x05,
00018 } bme280_sampling_t;
00019 
00020 typedef enum{
00021     BME280_MODE_SLEEP   = 0x00,
00022     BME280_MODE_FORCED1 = 0x01,
00023     BME280_MODE_FORCED2 = 0x02,
00024     BME280_MODE_NORMAL  = 0x03,
00025 } bme280_mode_t;
00026 
00027 class BME280
00028 {
00029 public:
00030     BME280(I2C& bme280_i2c, uint8_t bme280_addr=BME280_ADDR_H);
00031     //virtual ~BME280();
00032     bool init(void);
00033     float getTemperature(void);
00034     float getPressure(void);
00035     float getHumidity(void);
00036 
00037 protected:
00038     I2C         _i2c;
00039     uint8_t     _addr;
00040     bool        _init;
00041     uint16_t    dig_T1;
00042     int16_t     dig_T2, dig_T3;
00043     uint16_t    dig_P1;
00044     int16_t     dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
00045     uint16_t    dig_H1, dig_H3;
00046     int16_t     dig_H2, dig_H4, dig_H5, dig_H6;
00047     int32_t     t_fine;
00048 };
00049 
00050 #endif