at30tse75x.h

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/*
 * Copyright (C) Daniel Krebs
 *
 * 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 AT30TSE75X_H
#define AT30TSE75X_H
 
#include <stdint.h>
#include "periph/i2c.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define AT30TSE75X_TEMP_ADDR            (0x48)
#define AT30TSE75X_EEPROM_ADDR          (0x50)
 
#define AT30TSE75X_REG__TEMPERATURE     (0x00)
#define AT30TSE75X_REG__CONFIG          (0x01)
#define AT30TSE75X_REG__LIMIT_LOW       (0x02)
#define AT30TSE75X_REG__LIMIT_HIGH      (0x03)
#define AT30TSE75X_REG__NV_CONFIG       (0x11)
#define AT30TSE75X_REG__NV_LIMIT_LOW    (0x12)
#define AT30TSE75X_REG__NV_LIMIR_HIGH   (0x13)
 
#define AT30TSE75X_INTEGER_MASK         (0x00ff)
#define AT30TSE75X_INTEGER_SHIFT        (0)
#define AT30TSE75X_FRACTIONAL_MASK      (0xf000)
#define AT30TSE75X_FRACTIONAL_SHIFT     (12)
#define AT30TSE75X_FRACTIONAL_BASE      (0.0625f)
 
#define AT30TSE75X_CONFIG__OS_BIT               (1 << 7)
#define AT30TSE75X_CONFIG__RESOLUTION_MASK      (0x60)
#define AT30TSE75X_CONFIG__RESOLUTION_SHIFT     (5)
#define AT30TSE75X_CONFIG__FTQ_MASK             (0x18)
#define AT30TSE75X_CONFIG__FTQ_SHIFT            (3)
#define AT30TSE75X_CONFIG__ALERT_POL_BIT        (1 << 2)
#define AT30TSE75X_CONFIG__ALARM_MODE_BIT       (1 << 1)
#define AT30TSE75X_CONFIG__SHUTDOWN_BIT         (1 << 0)
 
#define AT30TSE75X_CMD__SAVE_TO_NVRAM           (0x48)
#define AT30TSE75X_CMD__RESTORE_FROM_NVRAM      (0xb8)
#define AT30TSE75X_CMD__GENERAL_CALL_RESET      (0x06)
#define AT30TSE75X_CMD__GENERAL_CALL_RELATCH    (0x04)
 
#define AT30TSE75X_BUS_FREE_TIME_US             (1U)
 
typedef enum {
    AT30TSE75X_RESOLUTION_9BIT = 0,
    AT30TSE75X_RESOLUTION_10BIT = 1,
    AT30TSE75X_RESOLUTION_11BIT = 2,
    AT30TSE75X_RESOLUTION_12BIT = 3
} at30tse75x_resolution_t;
 
typedef enum {
    AT30TSE75X_MODE_COMPARATOR,
    AT30TSE75X_MODE_INTERRUPT,
    AT30TSE75X_MODE_ONE_SHOT
} at30tse75x_mode_t;
 
typedef enum {
    AT30TSE75X_ALARM_AFTER_1 = 0,
    AT30TSE75X_ALARM_AFTER_2 = 1,
    AT30TSE75X_ALARM_AFTER_4 = 2,
    AT30TSE75X_ALARM_AFTER_6 = 3
} at30tse75x_fault_tolerance_t;
 
typedef enum {
    AT30TSE75X_ALARM_ACTIVE_LOW,
    AT30TSE75X_ALARM_ACTIVE_HIGH
} at30tse75x_alarm_polatity_t;
 /* AT30TSE75x configuration types */
 
typedef struct {
    i2c_t i2c;          
    uint8_t addr;       
} at30tse75x_t;
 
int at30tse75x_init(at30tse75x_t* dev, i2c_t i2c, uint8_t addr);
 
int at30tse75x_save_config(const at30tse75x_t* dev);
 
int at30tse75x_restore_config(const at30tse75x_t* dev);
 
int at30tse75x_get_config(const at30tse75x_t* dev, uint8_t* data);
 
int at30tse75x_set_config(const at30tse75x_t* dev, uint8_t data);
 
int at30tse75x_set_resolution(const at30tse75x_t* dev, at30tse75x_resolution_t resolution);
 
int at30tse75x_set_mode(const at30tse75x_t* dev, at30tse75x_mode_t mode);
 
int at30tse75x_set_alarm_polarity(const at30tse75x_t* dev, at30tse75x_alarm_polatity_t polarity);
 
int at30tse75x_set_fault_tolerance(const at30tse75x_t* dev, at30tse75x_fault_tolerance_t tolerance);
 
int at30tse75x_set_limit_low(const at30tse75x_t* dev, int8_t t_low);
 
int at30tse75x_set_limit_high(const at30tse75x_t* dev, int8_t t_high);
 
int at30tse75x_get_temperature(const at30tse75x_t* dev, float* temperature);
 
#ifdef __cplusplus
}
#endif
 
#endif /* AT30TSE75X_H */