bme280_definitions.h

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//***************************************
 
#ifndef BME280_DEFINITIONS_H
#define BME280_DEFINITIONS_H
 
//***************************************
 
#include <stdint.h>
 
#define BME280_OK               (0)     
#define BME280_PARAM_ERR        (-1)    
#define BME280_INTERFACE_ERR    (-2)    
#define BME280_ID_ERR           (-3)    
#define BME280_NO_INIT_ERR      (-4)    
#define BME280_CONDITION_ERR    (-5)    
#define BME280_BUSY_ERR         (-6)    
 
#define BME280_I2CADDR_SDOL (0x76)      
#define BME280_I2CADDR_SDOH (0x77)      
 
#define BME280_ID           (0x60)      
#define BME280_ID_ADDR      (0xD0)      
 
    /* Reset related */
#define BME280_RESET_ADDR   (0xE0)      
#define BME280_RESET_VALUE  (0xB6)      
 
    /* calibration data related */
#define BME280_CALIB_DATA1_ADDR (0x88)  
#define BME280_CALIB_DATA1_LEN  (25U)   
#define BME280_CALIB_DATA2_ADDR (0xE1)  
#define BME280_CALIB_DATA2_LEN  (7U)    
 
    /* control and config related */
#define BME280_CTRL_HUM_ADDR    (0xF2)  
#define BME280_CTRL_MEAS_ADDR   (0xF4)  
#define BME280_CONFIG_ADDR      (0xF5)  
 
    /* raw adc data related */
#define BME280_PRESS_ADC_ADDR   (0xF7)  
#define BME280_PRESS_ADC_LEN    (3U)    
#define BME280_TEMP_ADC_ADDR    (0xFA)  
#define BME280_TEMP_ADC_LEN     (3U)    
#define BME280_HUM_ADC_ADDR     (0xFD)  
#define BME280_HUM_ADC_LEN      (2U)    
 
    /* status register */
#define BME280_STATUS_ADDR      (0xF3)  
 
    /* oversampling values */
#define BME280_OVERSAMPLING_SKIPP   (0x00)  
#define BME280_OVERSAMPLING_X1      (0x01)  
#define BME280_OVERSAMPLING_X2      (0x02)  
#define BME280_OVERSAMPLING_X4      (0x03)  
#define BME280_OVERSAMPLING_X8      (0x04)  
#define BME280_OVERSAMPLING_X16     (0x05)  
 
    /* operating mode */
#define BME280_SLEEPMODE    (0x00)  
#define BME280_FORCEDMODE   (0x01)  
#define BME280_NORMALMODE   (0x03)  
 
    /* standby time in normal mode  */
#define BME280_STBY_0_5MS   (0x00)  
#define BME280_STBY_62_5MS  (0x01)  
#define BME280_STBY_125MS   (0x02)  
#define BME280_STBY_250MS   (0x03)  
#define BME280_STBY_500MS   (0x04)  
#define BME280_STBY_1000MS  (0x05)  
#define BME280_STBY_10MS    (0x06)  
#define BME280_STBY_20MS    (0x07)  
 
    /* filter coefficient */
#define BME280_FILTER_OFF   (0x00)  
#define BME280_FILTER_2     (0x01)  
#define BME280_FILTER_4     (0x02)  
#define BME280_FILTER_8     (0x03)  
#define BME280_FILTER_16    (0x04)  
 
 
typedef int8_t (*bme280_readregisters)(uint8_t reg_addr, uint8_t *rxbuff, uint8_t rxlen, void *driver);
 
typedef int8_t (*bme280_writeregister)(uint8_t reg_addr, uint8_t value, void *driver);
 
typedef void (*bme280_delayms)(uint8_t delay_time);
 
typedef int32_t BME280_S32_t;   
typedef uint32_t BME280_U32_t;  
typedef int64_t BME280_S64_t;   
 
struct BME280_calibration_data {
 
    uint16_t dig_T1;
    int16_t dig_T2;
    int16_t dig_T3;
 
    uint16_t dig_P1;
    int16_t dig_P2;
    int16_t dig_P3;
    int16_t dig_P4;
    int16_t dig_P5;
    int16_t dig_P6;
    int16_t dig_P7;
    int16_t dig_P8;
    int16_t dig_P9;
 
    uint8_t dig_H1;
    int16_t dig_H2;
    uint8_t dig_H3;
    int16_t dig_H4;
    int16_t dig_H5;
    int8_t dig_H6;
};
 
typedef struct {
 
    bme280_readregisters read;
    bme280_writeregister write;
    bme280_delayms delay;
    void *env_spec_data;
    uint8_t i2c_address;
 
} BME280_Driver_t;
 
typedef struct {
 
    BME280_Driver_t *driver;
 
    struct BME280_calibration_data trimm;
    BME280_S32_t t_fine;
 
    uint8_t initialized;
    uint8_t mode;
 
} BME280_t;
 
typedef struct {
 
    uint8_t oversampling_h; 
    uint8_t oversampling_p; 
    uint8_t oversampling_t; 
    uint8_t mode;   
    uint8_t t_stby; 
    uint8_t filter; 
    uint8_t spi3w_enable;   
 
} BME280_Config_t;
 
typedef struct {
 
    int8_t temp_int;    
    uint8_t temp_fract; 
 
    uint16_t pressure_int;  
    uint16_t pressure_fract;    
 
    uint8_t humidity_int;   
    uint16_t humidity_fract;    
 
} BME280_Data_t;
 
typedef struct {
 
    float temp; 
    float press;    
    float hum;  
 
} BME280_DataF_t;
 
#endif /* BME280_DEFINITIONS_H */