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/*******************************************************************************
* Copyright (C) 2019 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
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* The above copyright notice and this permission notice shall be included
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*******************************************************************************
* @file DS1775.h
*******************************************************************************
*/
#ifndef DS1775_H
#define DS1775_H
#include "mbed.h"

#define DS1775_NO_ERROR   0
#define DS1775_ERROR      -1

#define DS1775_REG_TEMPERATURE      0X00
#define DS1775_REG_CONFIGURATION    0X01
#define DS1775_REG_THYST_LOW_TRIP   0X02 
#define DS1775_REG_TOS_HIGH_TRIP    0X03 
#define DS1775_REG_MAX              0X03

#define DS1775_CFG_ONE_SHOT_START   (1) /* Start one-shot measurement */

#define DS1775_CFG_CONV_RATE_0_25   (0x00 << 1) /* 0.25 conversions/sec */
#define DS1775_CFG_CONV_RATE_1      (0x01 << 1) /* 1.0 conversions/sec */
#define DS1775_CFG_CONV_RATE_4      (0x02 << 1) /* 4.0 conversions/sec */
#define DS1775_CFG_CONV_RATE_8      (0x03 << 1) /* 8.0 conversions/sec */
#define DS1775_WAIT_CONV_TIME_9BIT  (0.1875)
#define DS1775_WAIT_CONV_TIME_10BIT (0.375)
#define DS1775_WAIT_CONV_TIME_11BIT (0.750)
#define DS1775_WAIT_CONV_TIME_12BIR (1.5)

#define DS1775_CFG_RESOLUTION_9BIT  (0x00 << 5)
#define DS1775_CFG_RESOLUTION_10BIT (0x01 << 5)
#define DS1775_CFG_RESOLUTION_11BIT (0x02 << 5)
#define DS1775_CFG_RESOLUTION_12BIT (0x03 << 5)

#define DS1775_CFG_NORMAL_FORMAT    (0X00 << 7)
#define DS1775_CFG_EXTENDED_FORMAT  (0X01 << 7)

#define DS1775_CFG_CONTINUOUS       (0X00 << 8)
#define DS1775_CFG_SHUTDOWN         (0X01 << 8)

#define DS1775_CFG_COMPARATOR_MODE  (0X00 << 9)
#define DS1775_CFG_INTERRUPT_MODE   (0X01 << 9)


#define DS1775_CFG_FAULT_FILTER_1   (0x00 << 11)
#define DS1775_CFG_FAULT_FILTER_2   (0x01 << 11)
#define DS1775_CFG_FAULT_FILTER_4   (0x02 << 11)
#define DS1775_CFG_FAULT_FILTER_6   (0x03 << 11)

#define DS1775_CFG_OVER_TEMP_MASK   (0x80)


#define DS1775_I2C_SLAVE_ADR_R0 (0x90 >> 1) // code uses the 7 bit address
#define DS1775_I2C_SLAVE_ADR_R1 (0x92 >> 1)
#define DS1775_I2C_SLAVE_ADR_R2 (0x94 >> 1)
#define DS1775_I2C_SLAVE_ADR_R3 (0x96 >> 1)
#define DS1775_I2C_SLAVE_ADR_R4 (0x98 >> 1)
#define DS1775_I2C_SLAVE_ADR_R5 (0x9A >> 1)
#define DS1775_I2C_SLAVE_ADR_R6 (0x9C >> 1)
#define DS1775_I2C_SLAVE_ADR_R7 (0x9E >> 1)

#define DS1775_CF_NORMAL_FORMAT (0.00390625F)
#define DS1775_CF_EXTENDED_FORMAT (0.0078125F)

/** @union ds1775_raw_data
 * @brief union data structure for byte word manipulations
 */
union ds1775_raw_data {
    struct {
        uint8_t lsb;
        uint8_t msb;
    };
    struct {
        uint16_t magnitude_bits:15;
        uint16_t sign_bit:1;
    };
    uint16_t uwrd;
    int16_t swrd;
};
#define DS1775_U16_MAX     ((uint16_t)~0U)
#define DS1775_S16_MAX     ((int16_t)(DS1775_U16_MAX>>1))
#define DS1775_S16_MIN     ((int16_t)(-DS1775_S16_MAX - 1))

#endif/* MAX31875_H */