bmp180.h

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#ifndef INC_SENSORS_INC_BMP180_H_
#define INC_SENSORS_INC_BMP180_H_
 
#include "stdint.h"
#include "stddef.h"

typedef int8_t (*BMP180_I2C_Read_Func)(uint8_t dev_addr, uint8_t reg_addr,
                                        uint8_t *data, uint16_t len);
typedef int8_t (*BMP180_I2C_Write_Func)(uint8_t dev_addr, uint8_t reg_addr,
                                         uint8_t *data, uint16_t len);
typedef void   (*BMP180_Delay_Func)(uint32_t ms);

typedef struct
{
    int16_t  AC1; 
    int16_t  AC2; 
    int16_t  AC3; 
    uint16_t AC4; 
    uint16_t AC5; 
    uint16_t AC6; 
    int16_t  B1;  
    int16_t  B2;  
    int16_t  MB;  
    int16_t  MC;  
    int16_t  MD;  
} BMP180_CalibrationData_t;

typedef struct {
    BMP180_I2C_Read_Func     i2c_read;    
    BMP180_I2C_Write_Func    i2c_write;   
    BMP180_Delay_Func        delay_ms;    
    uint8_t                  oss;         
    BMP180_CalibrationData_t calib;       
    int32_t                  b5;          
    float                    temperature_C; 
    float                    pressure_Pa;  
} BMP180_HandleTypeDef;
 
/* ---------- Constants ---------- */
#define BMP180_CALIB_DATA_SIZE          22   
#define BMP180_ADDRESS                  0xEE 
#define BMP180_REG_CALIB_DATA_START     0xAA 
#define BMP180_REG_CALIB_DATA_END       0xBF 
#define BMP180_REG_OUT_XLSB             0xF8 
#define BMP180_REG_OUT_LSB              0xF7 
#define BMP180_REG_OUT_MSB              0xF6 
#define BMP180_REG_CTRL_MEAS            0xF4 
#define BMP180_REG_SOFT_RST             0xE0 
#define BMP180_REG_CHIP_ID              0xD0 
#define BMP180_MEASURE_TEMP             0x0E 
#define BMP180_MEASURE_PRESSURE         0x14 

typedef union
{
    uint8_t all; 
    struct {
        uint8_t measure : 5; 
        uint8_t sco     : 1; 
        uint8_t oss     : 2; 
    } bits;
} BMP180_CtrlMeas_t;

int8_t BMP180_Init(BMP180_HandleTypeDef *dev);

int8_t BMP180_Read(BMP180_HandleTypeDef *dev);

int8_t BMP180_Read_Temperature(BMP180_HandleTypeDef *dev);

int8_t BMP180_get_ut(BMP180_HandleTypeDef *dev, int32_t *ut_result);

int8_t BMP180_get_up(BMP180_HandleTypeDef *dev, int32_t *up_result);

void BMP180_calc_temperature(BMP180_HandleTypeDef *dev, int32_t ut);

void BMP180_calc_pressure(BMP180_HandleTypeDef *dev, int32_t up);
 
#endif /* INC_SENSORS_INC_BMP180_H_ */