Manuel Caballero
±0.5°C Maximum Accuracy Digital Temperature Sensor
Dependents: mbed-os5-F303-18650-Manager-tp4056
MCP9808.h
- Committer:
- mcm
- Date:
- 2019-04-25
- Revision:
- 1:3aa7e66c9a5b
- Parent:
- 0:6a0fe4376e0f
- Child:
- 2:da266f1b2273
File content as of revision 1:3aa7e66c9a5b:
/**
* @brief MCP9808.h
* @details ±0.5°C Maximum Accuracy Digital Temperature Sensor.
* Header file.
*
*
* @return N/A
*
* @author Manuel Caballero
* @date 15/April/2019
* @version 15/April/2019 The ORIGIN
* @pre N/A.
* @warning N/A
* @pre This code belongs to AqueronteBlog ( http://unbarquero.blogspot.com ). All rights reserved.
*/
#ifndef MCP9808_H
#define MCP9808_H
#include "mbed.h"
/**
Example:
@code
[todo]
@endcode
*/
/*!
Library for the MCP9808 ±0.5°C Maximum Accuracy Digital Temperature Sensor.
*/
class MCP9808
{
public:
/**
* @brief DEFAULT ADDRESSES
*/
typedef enum {
MCP9808_ADDRESS_0 = ( 0b0011000 << 1U ), /*!< I2C slave address byte: A2A1A0: 000 */
MCP9808_ADDRESS_1 = ( 0b0011001 << 1U ), /*!< I2C slave address byte: A2A1A0: 001 */
MCP9808_ADDRESS_2 = ( 0b0011010 << 1U ), /*!< I2C slave address byte: A2A1A0: 010 */
MCP9808_ADDRESS_3 = ( 0b0011011 << 1U ), /*!< I2C slave address byte: A2A1A0: 011 */
MCP9808_ADDRESS_4 = ( 0b0011100 << 1U ), /*!< I2C slave address byte: A2A1A0: 100 */
MCP9808_ADDRESS_5 = ( 0b0011101 << 1U ), /*!< I2C slave address byte: A2A1A0: 101 */
MCP9808_ADDRESS_6 = ( 0b0011110 << 1U ), /*!< I2C slave address byte: A2A1A0: 110 */
MCP9808_ADDRESS_7 = ( 0b0011111 << 1U ) /*!< I2C slave address byte: A2A1A0: 111 */
} MCP9808_addresses_t;
/**
* @brief REGISTERS
*/
typedef enum {
MCP9808_CONFIG = 0x01, /*!< CONFIG register */
MCP9808_TUPPER = 0x02, /*!< T_UPPER register */
MCP9808_TLOWER = 0x03, /*!< T_LOWER register */
MCP9808_TCRIT = 0x04, /*!< T_CRIT register */
MCP9808_TA = 0x05, /*!< T_A register */
MCP9808_MANUFACTURER_ID = 0x06, /*!< Manufacturer ID register */
MCP9808_DEVICE_ID = 0x07, /*!< Device ID/Revision register */
MCP9808_RESOLUTION = 0x08 /*!< Resolution register */
} MCP9808_registers_t;
/**
* @brief CONFIG Register
*/
/* T_HYST <9:10>: TUPPER AND TLOWER LIMIT HYSTERESIS BITS
* NOTE:
* · This bit can not be altered when either of the Lock bits are set ( bit 6 and bit 7 )
* · This bit can be programmed in Shutdown mode
*/
typedef enum {
CONFIG_T_HYST_MASK = ( 0b11 << 9U ), /*!< T_HYST mask */
CONFIG_T_HYST_0_C = ( 0b00 << 9U ), /*!< T_HYST: 0C [ Default ] */
CONFIG_T_HYST_1_5_C = ( 0b01 << 9U ), /*!< T_HYST: +1.5C */
CONFIG_T_HYST_3_0_C = ( 0b10 << 9U ), /*!< T_HYST: +3.0C */
CONFIG_T_HYST_6_0_C = ( 0b11 << 9U ), /*!< T_HYST: +6.0C */
} MCP9808_config_thyst_t;
/* SHDN <8>: SHUTDOWN MODE BIT
* NOTE:
* · This bit can not be set to '1' when either of the Lock bits are set ( bit 6 and bit 7 ), however,
* it can be cleared to '0' for continuous conversion while locked.
*/
typedef enum {
CONFIG_SHDN_MASK = ( 1U << 8U ), /*!< SHDN mask */
CONFIG_SHDN_CONTINUOUS_CONVERSION = ( 0U << 8U ), /*!< SHDN: Continuous conversion [ Default ] */
CONFIG_SHDN_SHUTDOWN = ( 1U << 8U ) /*!< SHDN: Shutdown ( Low-power mode ) */
} MCP9808_config_shdn_t;
/* CRIT_LOCK <7>: T_CRIT LOCKED BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_CRIT_LOCK_MASK = ( 1U << 7U ), /*!< CRIT_LOCK mask */
CONFIG_CRIT_LOCK_UNLOCKED = ( 0U << 7U ), /*!< T_CRIT register can be written [ Default ] */
CONFIG_CRIT_LOCK_LOCKED = ( 1U << 7U ) /*!< T_CRIT register can not be written */
} MCP9808_config_crit_lock_t;
/* WIN_LOCK <6>: CORRECTION INTERRUPT ENABLE
* NOTE: N/A.
*/
typedef enum {
CONFIG_WIN_LOCK_MASK = ( 1U << 6U ), /*!< WIN_LOCK mask */
CONFIG_WIN_LOCK_UNLOCKED = ( 0U << 6U ), /*!< TUPPER and TLOWER can be written [ Default ] */
CONFIG_WIN_LOCK_LOCKED = ( 1U << 6U ) /*!< TUPPER and TLOWER can not be written */
} MCP9808_config_win_lock_t;
/* INT_CLEAR <5>: INTERRUPT CLEAR BIT
* NOTE:
* · This bit can not be set to '1' in Shutdown mode, but it can be cleared after the device enters Shutdown mode
*/
typedef enum {
CONFIG_INT_CLEAR_MASK = ( 1U << 5U ), /*!< INT_CLEAR mask */
CONFIG_INT_CLEAR_NO_EFFECT = ( 0U << 5U ), /*!< No effect [ Default ] */
CONFIG_INT_CLEAR_CLEAR_INT_OUTPUT = ( 1U << 5U ) /*!< Clear interrupt output, when read, returns '0' */
} MCP9808_conf_int_clear_t;
/* ALERT_STAT <4>: ALERT OUTPUT STATUS BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_ALERT_STAT_MASK = ( 1U << 4U ), /*!< ALERT_STAT mask */
CONFIG_ALERT_STAT_NOT_ASSERTED = ( 0U << 4U ), /*!< ALERT_STAT is not asserted [ Default ] */
CONFIG_ALERT_STAT_ASSERTED = ( 1U << 4U ) /*!< ALERT_STAT is asserted */
} MCP9808_config_alert_stat_t;
/* ALERT_CNT <3>: ALERT OUTPUT CONTROL BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_ALERT_CNT_MASK = ( 1U << 3U ), /*!< ALERT_CNT mask */
CONFIG_ALERT_CNT_DISABLED = ( 0U << 3U ), /*!< ALERT_CNT disabled [ Default ] */
CONFIG_ALERT_CNT_ENABLED = ( 1U << 3U ) /*!< ALERT_CNT enabled */
} MCP9808_config_alert_cnt_t;
/* ALERT_SEL <2>: ALERT OUTPUT SELECT BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_ALERT_SEL_MASK = ( 1U << 2U ), /*!< ALERT_SEL mask */
CONFIG_ALERT_SEL_TUPPER_TLOWER_TCRIT = ( 0U << 2U ), /*!< Alert output for T_UPPER, T_LOWER and T_CRIT [ Default ] */
CONFIG_ALERT_SEL_TA_GREATER_TCRIT = ( 1U << 2U ) /*!< Alert output for T_A greater T_CRIT */
} MCP9808_config_alert_sel_t;
/* ALERT_POL <1>: ALERT OUTPUT POLARITY BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_ALERT_POL_MASK = ( 1U << 1U ), /*!< ALERT_POL mask */
CONFIG_ALERT_POL_ACTIVE_LOW = ( 0U << 1U ), /*!< ALERT_POL active-low [ Default ] */
CONFIG_ALERT_POL_ACTIVE_HIGH = ( 1U << 1U ) /*!< ALERT_POL active-high */
} MCP9808_config_alert_pol_t;
/* ALERT_MOD <0>: ALERT OUTPUT MODE BIT
* NOTE: N/A.
*/
typedef enum {
CONFIG_ALERT_MOD_MASK = ( 1U << 0U ), /*!< ALERT_MOD mask */
CONFIG_ALERT_MOD_COMPARATOR_OUTPUT = ( 0U << 0U ), /*!< ALERT_MOD comparator output [ Default ] */
CONFIG_ALERT_MOD_INTERRUPT_OUTPUT = ( 1U << 0U ) /*!< ALERT_MOD interrupt output */
} MCP9808_config_alert_mod_t;
/**
* @brief T_UPPER/T_LOWER/T_CRIT TEMPERATURE LIMIT REGISTERS
*/
/* SIGN <12>: SIGN BIT
* NOTE: N/A.
*/
typedef enum {
TEMPERATURE_LIMIT_SIGN_MASK = ( 1U << 12U ), /*!< SIGN mask */
TEMPERATURE_LIMIT_SIGN_TA_POSITIVE = ( 0U << 12U ), /*!< T_A greater or iqual 0C [ Default ] */
TEMPERATURE_LIMIT_SIGN_TA_NEGATIVE = ( 1U << 12U ) /*!< T_A lower 0C */
} MCP9808_temperature_limit_sign_t;
/* INTEGRAL <8:4>: TEMPERATURE INTEGRAL BOUNDARY PART
* NOTE: N/A.
*/
typedef enum {
TEMPERATURE_LIMIT_INTEGRAL_PART_MASK = ( 0b11111111 << 4U ) /*!< Temperature limit, integral part mask */
} MCP9808_temperature_limit_integral_boundary_t;
/* DECIMAL <3:2>: TEMPERATURE DECIMAL BOUNDARY PART
* NOTE: N/A.
*/
typedef enum {
TEMPERATURE_LIMIT_DECIMAL_PART_MASK = ( 0b11 << 2U ), /*!< Temperature limit, decimal part mask */
TEMPERATURE_LIMIT_DECIMAL_PART_0_00C = ( 0b00 << 2U ), /*!< Temperature limit, decimal part: 0.00C */
TEMPERATURE_LIMIT_DECIMAL_PART_0_25C = ( 0b01 << 2U ), /*!< Temperature limit, decimal part: 0.25C */
TEMPERATURE_LIMIT_DECIMAL_PART_0_50C = ( 0b10 << 2U ), /*!< Temperature limit, decimal part: 0.50C */
TEMPERATURE_LIMIT_DECIMAL_PART_0_75C = ( 0b11 << 2U ) /*!< Temperature limit, decimal part: 0.75C */
} MCP9808_temperature_limit_decimal_boundary_t;
/**
* @brief T_A AMBIENT TEMPERATURE REGISTERS
*/
/* TA_VS_TCRIT <15>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_VS_TCRIT_MASK = ( 1U << 15U ), /*!< T_A mask */
T_A_TA_VS_TCRIT_TA_LOWER_TCRIT = ( 0U << 15U ), /*!< T_A lower T_CRIT */
T_A_TA_VS_TCRIT_TA_GREATER_EQUAL_TCRIT = ( 1U << 15U ) /*!< T_A greater or equal T_CRIT */
} MCP9808_t_a_ta_vs_tcrit_t;
/* TA_VS_TUPPER <14>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_VS_TUPPER_MASK = ( 1U << 14U ), /*!< T_A mask */
T_A_TA_VS_TUPPER_TA_LOWER__IQUAL_TUPPER = ( 0U << 14U ), /*!< T_A lower or equal T_UPPER */
T_A_TA_VS_TUPPER_TA_GREATER_TUPPER = ( 1U << 14U ) /*!< T_A greater T_UPPER */
} MCP9808_t_a_ta_vs_tupper_t;
/* TA_VS_LOWER <13>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_VS_TLOWER_MASK = ( 1U << 13U ), /*!< T_A mask */
T_A_TA_VS_TLOWER_TA_LOWER_TLOWER = ( 1U << 13U ), /*!< T_A lower or equal T_LOWER */
T_A_TA_VS_TLOWER_TA_GREATER_EQUAL_TLOWER = ( 0U << 13U ) /*!< T_A greater T_LOWER */
} MCP9808_t_a_ta_vs_tlower_t;
/* TA_SIGN <12>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_SIGN_MASK = ( 1U << 12U ), /*!< T_A SIGN mask */
T_A_TA_SIGN_POSITIVE = ( 0U << 12U ), /*!< T_A positive */
T_A_TA_SIGN_NEGATIVE = ( 1U << 12U ) /*!< T_A negative */
} MCP9808_t_a_sign_t;
/* TA_INTEGRAL <11:4>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_INTEGRAL_PART_MASK = ( 0b11111111 << 4U ) /*!< T_A integral part */
} MCP9808_t_a_integral_t;
/* TA_DECIMAL <3:0>
* NOTE: N/A.
*/
typedef enum {
T_A_TA_DECIMAL_PART_MASK = ( 0b1111 << 0U ) /*!< T_A decimal part */
} MCP9808_t_a_decimal_t;
/**
* @brief RESOLUTION REGISTER
*/
/* RESOLUTION <1:0>
* NOTE: N/A.
*/
typedef enum {
RESOLUTION_MASK = ( 0b11 << 0U ), /*!< Resolution mask */
RESOLUTION_0_5_C = ( 0b00 << 0U ), /*!< Resolution: +0.5C */
RESOLUTION_0_25_C = ( 0b01 << 0U ), /*!< Resolution: +0.25C */
RESOLUTION_0_125_C = ( 0b10 << 0U ), /*!< Resolution: +0.125C */
RESOLUTION_0_0625_C = ( 0b11 << 0U ) /*!< Resolution: +0.0625C [ Default ] */
} MCP9808_resolution_t;
#ifndef MCP9808_VECTOR_STRUCT_H
#define MCP9808_VECTOR_STRUCT_H
typedef struct {
MCP9808_config_thyst_t t_hyst; /*!< Temperature Limit Hysteresis */
MCP9808_config_shdn_t shdn; /*!< Shutdown mode */
MCP9808_config_crit_lock_t t_crit; /*!< T_CRIT lock bit */
MCP9808_config_win_lock_t t_win_lock; /*!< Win. Lock bit */
MCP9808_conf_int_clear_t int_clear; /*!< Interrupt clear bit */
MCP9808_config_alert_stat_t alert_stat; /*!< Alert output status bit */
MCP9808_config_alert_cnt_t alert_cnt; /*!< Alert Output control bit */
MCP9808_config_alert_sel_t alert_sel; /*!< Alert Output select bit */
MCP9808_config_alert_pol_t alert_pol; /*!< Alert Output polarity bit */
MCP9808_config_alert_mod_t alert_mod; /*!< Alert Output mode bit */
} MCP9808_config_reg_t;
typedef struct {
float t_a; /*!< Ambient temperature value */
uint16_t t_a_raw; /*!< Raw ambient temperature value */
MCP9808_t_a_sign_t t_a_sign; /*!< Ambient temperature sign */
MCP9808_t_a_ta_vs_tcrit_t ta_vs_tcrit; /*!< T_A vs T_CRIT result */
MCP9808_t_a_ta_vs_tupper_t ta_vs_tupper; /*!< T_A vs T_UPPER result */
MCP9808_t_a_ta_vs_tlower_t ta_vs_tlower; /*!< T_A vs T_LOWER result */
MCP9808_resolution_t resolution; /*!< Device resolution */
float t_upper; /*!< T_UPPER limit */
float t_lower; /*!< T_LOWER limit */
float t_crit; /*!< T_CRIT limit */
uint16_t manufacturerID; /*!< Manufacturer ID */
uint8_t deviceID; /*!< Device ID */
uint8_t deviceRevision; /*!< Device Revision */
} MCP9808_data_t;
#endif
/**
* @brief INTERNAL CONSTANTS
*/
typedef enum {
MCP9808_SUCCESS = 0U,
MCP9808_FAILURE = 1U,
I2C_SUCCESS = 0U /*!< I2C communication was fine */
} MCP9808_status_t;
/** Create an MCP9808 object connected to the specified I2C pins.
*
* @param sda I2C data pin
* @param scl I2C clock pin
* @param addr I2C slave address
* @param freq I2C frequency
*/
MCP9808 ( PinName sda, PinName scl, uint32_t addr, uint32_t freq );
/** Delete MCP9808 object.
*/
~MCP9808();
/** It gets CONFIG register value.
*/
MCP9808_status_t MCP9808_GetCONFIG ( MCP9808_config_reg_t* myCONFIG );
/** It sets CONFIG register value.
*/
MCP9808_status_t MCP9808_SetCONFIG ( MCP9808_config_reg_t myCONFIG );
/** It sets temperature limit for: T_UPPER, T_LOWER or T_CRIT.
*/
MCP9808_status_t MCP9808_SetT_Limit ( MCP9808_registers_t myTLimit, MCP9808_data_t myTValue_Limit );
/** It gets temperature limit for: T_UPPER, T_LOWER or T_CRIT.
*/
MCP9808_status_t MCP9808_GetT_Limit ( MCP9808_registers_t myTLimit, MCP9808_data_t* myTValue_Limit);
/** It gets ambient temperature register ( raw value ).
*/
MCP9808_status_t MCP9808_GetRawTA ( MCP9808_data_t* myRawTA );
/** It gets ambient temperature register ( Celsius degrees ).
*/
MCP9808_status_t MCP9808_GetTA ( MCP9808_data_t* myTA );
/** It gets manufacturer ID.
*/
MCP9808_status_t MCP9808_GetManufacturerID ( MCP9808_data_t* myManufacturerID );
/** It gets both device ID and device revision.
*/
MCP9808_status_t MCP9808_GetDeviceID ( MCP9808_data_t* myDeviceID );
/** It sets the sensor resolution.
*/
MCP9808_status_t MCP9808_SetResolution ( MCP9808_data_t myResolution );
/** It gets the sensor resolution.
*/
MCP9808_status_t MCP9808_GetResolution ( MCP9808_data_t* myResolution );
private:
I2C _i2c;
uint32_t _MCP9808_Addr;
};
#endif