sht3x.h

Go to the documentation of this file.

/*
 * Copyright (C) 2018 Gunar Schorcht
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef SHT3X_H
#define SHT3X_H
 
#include <stdint.h>
#include <stdbool.h>
 
#include "periph/i2c.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define SHT3X_I2C_ADDR_1    (0x44)  
#define SHT3X_I2C_ADDR_2    (0x45)  
typedef enum {
    SHT3X_OK,                       
    SHT3X_ERROR_I2C,                
    SHT3X_ERROR_CRC,                
    SHT3X_ERROR_STATUS,             
    SHT3X_ERROR_MEASURE_CMD_INV,    
} sht3x_error_codes;
 
typedef enum {
    SHT3X_SINGLE_SHOT = 0,  
    SHT3X_PERIODIC_0_5_MPS, 
    SHT3X_PERIODIC_1_MPS,   
    SHT3X_PERIODIC_2_MPS,   
    SHT3X_PERIODIC_4_MPS,   
    SHT3X_PERIODIC_10_MPS   
} sht3x_mode_t;
 
 
typedef enum {
    SHT3X_HIGH = 0, 
    SHT3X_MEDIUM,   
    SHT3X_LOW       
} sht3x_repeat_t;
 
 
typedef struct {
    i2c_t          i2c_dev;   
    uint8_t        i2c_addr;  
    sht3x_mode_t   mode;      
    sht3x_repeat_t repeat;    
} sht3x_params_t;
 
typedef struct {
 
    i2c_t           i2c_dev;         
    uint8_t         i2c_addr;        
    sht3x_mode_t    mode;            
    sht3x_repeat_t  repeat;          
    bool            meas_started;    
    uint32_t        meas_start_time; 
    uint32_t        meas_duration;   
} sht3x_dev_t;
 
 
int sht3x_init (sht3x_dev_t *dev, const sht3x_params_t *params);
 
int sht3x_read (sht3x_dev_t* dev, int16_t* temp, int16_t* hum);
 
#ifdef __cplusplus
}
#endif
 
#endif /* SHT3X_H */