Maxim Integrated
Driver for MAX31331 and MAX31334 Real Time Clock ICs.
max3133x.hpp
- Committer:
- Sinan Divarci
- Date:
- 22 months ago
- Revision:
- 0:4a2754e462db
File content as of revision 0:4a2754e462db:
/*******************************************************************************
* Copyright(C) Analog Devices 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* Software is furnished to do so, subject to the following conditions:
*
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* in all copies or substantial portions of the Software.
*
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of Analog Devices Inc.
* shall not be used except as stated in the Analog Devices Inc.
* Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
* trademarks, maskwork rights, or any other form of intellectual
* property whatsoever. Analog Devices Inc.retains all ownership rights.
*******************************************************************************
*/
#ifndef MAX3133X_HPP_
#define MAX3133X_HPP_
#include "mbed.h"
#include "rtos.h"
#include "max3133x_regs.hpp"
#define MAX3133X_I2C_ADDRESS 0x68
#define MAX3133X_I2C_W (MAX3133X_I2C_ADDRESS << 1)
#define MAX3133X_I2C_R ((MAX3133X_I2C_ADDRESS << 1) | 1)
enum max3133x_error_codes {
MAX3133X_NO_ERR,
MAX3133X_NULL_VALUE_ERR = -1,
MAX3133X_READ_REG_ERR = -2,
MAX3133X_WRITE_REG_ERR = -3,
MAX3133X_INVALID_TIME_ERR = -4,
MAX3133X_INVALID_DATE_ERR = -5,
MAX3133X_INVALID_MASK_ERR = -6,
MAX3133X_INVALID_ALARM_PERIOD_ERR = -7,
MAX3133X_ALARM_ONETIME_NOT_SUPP_ERR = -8,
MAX3133X_ALARM_YEARLY_NOT_SUPP_ERR = -9,
MAX3133X_ALARM_EVERYMINUTE_NOT_SUPP_ERR = -10,
MAX3133X_ALARM_EVERYSECOND_NOT_SUPP_ERR = -11
};
class MAX3133X
{
public:
/* PUBLIC FUNCTION DECLARATIONS */
/**
* @brief Read from a register.
*
* @param[in] reg Address of a register to be read.
* @param[out] value Pointer to save result value.
* @param[in] len Size of result to be read.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int read_register(uint8_t reg, uint8_t *value, uint8_t len);
/**
* @brief Write to a register.
*
* @param[in] reg Address of a register to be written.
* @param[out] value Pointer of value to be written to register.
* @param[in] len Size of result to be written.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int write_register(uint8_t reg, const uint8_t *value, uint8_t len);
/**
* @brief Read time info from RTC.
*
* @param[out] rtc_ctime Time info from RTC.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int get_time(struct tm *rtc_ctime, uint16_t *sub_sec = NULL);
/**
* @brief Selection of 24hr-12hr hour format
*/
typedef enum {
HOUR24 = 0, /**< 24-Hour format */
HOUR12 = 1, /**< 12-Hour format */
}hour_format_t;
/**
* @brief Set time info to RTC.
*
* @param[in] rtc_ctime Time info to be written to RTC.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int set_time(const struct tm *rtc_ctime, hour_format_t format = HOUR24);
/**
* @brief Alarm periodicity selection
*/
typedef enum {
ALARM_PERIOD_EVERYSECOND, /**< Once a second */
ALARM_PERIOD_EVERYMINUTE, /**< Seconds match */
ALARM_PERIOD_HOURLY, /**< Seconds and Minutes match */
ALARM_PERIOD_DAILY, /**< Hours, Minutes and Seconds match*/
ALARM_PERIOD_WEEKLY, /**< Day and Time match */
ALARM_PERIOD_MONTHLY, /**< Date and Time match */
ALARM_PERIOD_YEARLY, /**< Month, Date and Time match */
ALARM_PERIOD_ONETIME, /**< Year, Month, Date and Time match */
}alarm_period_t;
/**
* @brief Alarm number selection
*/
typedef enum {
ALARM1, /**< Alarm number 1 */
ALARM2, /**< Alarm number 2 */
}alarm_no_t;
/**
* @brief Set an alarm condition
*
* @param[in] alarm_no Alarm number, ALARM1 or ALARM2
* @param[in] alarm_time Pointer to alarm time to be set
* @param[in] period Alarm periodicity, one of ALARM_PERIOD_*
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int set_alarm(alarm_no_t alarm_no, const struct tm *alarm_time, alarm_period_t period);
/**
* @brief Get alarm data & time
*
* @param[in] alarm_no Alarm number, ALARM1 or ALARM2
* @param[out] alarm_time Pointer to alarm time to be filled in
* @param[out] period Pointer to the period of alarm, one of ALARM_PERIOD_*
* @param[out] is_enabled Pointer to the state of alarm
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int get_alarm(alarm_no_t alarm_no, struct tm *alarm_time, alarm_period_t *period, bool *is_enabled);
/**
* @brief Gets Status Register Value
*
* @param[in] status_reg
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int get_status_reg(max3133x_status_reg_t * status_reg);
/**
* @brief Gets Interrupt Enable Register Value
*
* @param[in] int_en_reg
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int get_interrupt_reg(max3133x_int_en_reg_t * int_en_reg);
/**
* @brief Selection of interrupt ids
*/
typedef enum {
INTR_ID_A1IE, /**< Alarm1 interrupt flag */
INTR_ID_A2IE, /**< Alarm2 interrupt flag */
INTR_ID_TIE, /**< Timer interrupt flag */
INTR_ID_DIE, /**< Digital (DIN) interrupt flag */
INTR_ID_VBATLOWIE, /**< VBAT Low Interrupt enable */
INTR_ID_PFAILE /**< Power fail Interrupt flag */
}intr_id_t;
/*Interrupt Enable Register Masks*/
#define A1IE 0b00000001 /*Alarm1 interrupt mask*/
#define A2IE 0b00000010 /*Alarm2 interrupt mask*/
#define TIE 0b00000100 /*Timer interrupt mask*/
#define DIE 0b00001000 /*Digital (DIN) interrupt mask*/
#define VBATLOWIE 0b00010000 /*VBAT Low Interrupt mask*/
#define PFAILE 0b00100000 /*Power fail Interrupt mask*/
#define DOSF 0b01000000 /*Disable oscillator flag*/
#define INT_ALL 0b00111111 /*All Interrupts*/
#define NUM_OF_INTR_ID 6 /*Number of Interrupt IDs*/
/**
* @brief Enables Interrupts
*
* @param[in] mask
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int interrupt_enable(uint8_t mask);
/**
* @brief Disables Interrupts
*
* @param[in] mask
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int interrupt_disable(uint8_t mask);
/**
* @brief Put device into reset state
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int sw_reset_assert();
/**
* @brief Release device from state state
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int sw_reset_release();
/**
* @brief Resets the digital block and the I2C programmable registers except for RAM registers and RTC_reset.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int sw_reset();
/**
* @brief Data retention mode enable/disable Configuration
*
* @details
* - Register : RTC_CONFIG1
* - Bit Fields : [2]
* - Default : 0x0
* - Description : Data retention mode enable/disable.
*/
typedef enum {
NORMAL_OP_MODE,
DATA_RETENTION_MODE
}data_ret_t;
/**
* @brief I2C timeout enable Configuration
*
* @details
* - Register : RTC_CONFIG1
* - Bit Fields : [1]
* - Default : 0x1
* - Description : I2C timeout enable
*/
typedef enum {
DISABLE_I2C_TIMEOUT,
ENABLE_I2C_TIMEOUT
}i2c_timeout_t;
/**
* @brief Active-high enable for the crystal oscillator Configuration
*
* @details
* - Register : RTC_CONFIG1
* - Bit Fields : [0]
* - Default : 0x1
* - Description : Active-high enable for the crystal oscillator
*/
typedef enum {
DISABLE_OSCILLATOR,
ENABLE_OSCILLATOR
}en_osc_t;
/**
* @brief Digital (DIN) pin Sleep Entry Enable Configuration
*
* @details
* - Register : RTC_CONFIG2
* - Bit Fields : [4]
* - Default : 0x0
* - Description : Digital (DIN) pin Sleep Entry Enable
*/
typedef enum {
DIN_SLEEP_ENTRY_DISABLE,
DIN_SLEEP_ENTRY_ENABLE
}dse_t;
/**
* @brief Digital (DIN) pin Debounce Enable Configuration
*
* @details
* - Register : RTC_CONFIG2
* - Bit Fields : [3]
* - Default : 0x0
* - Description : Digital (DIN) pin Debounce Enable
*/
typedef enum {
DIN_DEBOUNCE_DISABLE,
DIN_DEBOUNCE_ENABLE
}ddb_t;
/**
* @brief CLKOUT enable Configuration
*
* @details
* - Register : RTC_CONFIG2
* - Bit Fields : [2]
* - Default : 0x0
* - Description : CLKOUT enable
*/
typedef enum {
INTERRUPT,
CLOCK_OUTPUT
}enclko_t;
/**
* @brief Register Configuration
*
* @details
* - Register : RTC_CONFIG1
* - Bit Fields : [5:4]
* - Default : 0x0
* - Description : Alarm1 Auto Clear
*/
typedef enum {
BY_READING, /**< 0x0: Alarm1 flag and interrupt can only be cleared by reading Status register via I2C */
AFTER_10MS, /**< 0x1: Alarm1 flag and interrupt are cleared ~10ms after assertion */
AFTER_500MS, /**< 0x2: Alarm1 flag and interrupt are cleared ~500ms after assertion */
AFTER_5s /**< 0x3: Alarm1 flag and interrupt are cleared ~5s after assertion. This option should not be used when Alarm1 is set to OncePerSec. */
}a1ac_t;
/**
* @brief Sets Alarm1 Auto Clear Mode
*
* @param[in] a1ac A1AC bits.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int set_alarm1_auto_clear(a1ac_t a1ac);
/**
* @brief Digital (DIN) interrupt polarity configuration
*
* @details
* - Register : RTC_CONFIG1
* - Bit Fields : [3]
* - Default : 0x0
* - Description : Digital (DIN) interrupt polarity
*/
typedef enum {
FALLING_EDGE, /**< 0x0: Interrupt triggers on falling edge of DIN input. */
RISING_EDGE /**< 0x1: Interrupt triggers on rising edge of DIN input. */
}dip_t;
/**
* @brief Digital (DIN) interrupt polarity
*
* @param[in] dip
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int set_din_polarity(dip_t dip);
/**
* @brief Put device into data retention mode
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int data_retention_mode_enter();
/**
* @brief Remove device from data retention mode
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int data_retention_mode_exit();
/**
* @brief Enable I2C timeout
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int i2c_timeout_enable();
/**
* @brief Disable I2C timeout
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int i2c_timeout_disable();
/**
* @brief Enable the crystal oscillator.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int oscillator_enable();
/**
* @brief Disable the crystal oscillator.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int oscillator_disable();
/**
* @brief Enable the CLKOUT. Sets INTBb/CLKOUT pin as CLKO (clock output).
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int clkout_enable();
/**
* @brief Disable the CLKOUT. Sets INTBb/CLKOUT pin as INTBb (interrupt).
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int clkout_disable();
/**
* @brief Set output clock frequency on INTBb/CLKOUT pin Configuration
*
* @details
* - Register : RTC_CONFIG2
* - Bit Fields : [1:0]
* - Default : 0x3
* - Description : Output clock frequency on INTBb/CLKOUT pin
*/
typedef enum {
CLKOUT_1HZ,
CLKOUT_64HZ,
CLKOUT_1024KHZ,
CLKOUT_32KHZ_UNCOMP
}clko_hz_t;
/**
* @brief Set output clock frequency on INTBb/CLKOUT pin
*
* @param[in] clko_hz
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int set_clko_freq(clko_hz_t clko_hz);
/**
* @brief Get output clock frequency on INTBb/CLKOUT pin
*
* @param[out] clko_hz
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int get_clko_freq(clko_hz_t *clko_hz);
/**
* @brief Enable the Timestamp Function
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int timestamp_function_enable();
/**
* @brief Disable the Timestamp Function
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int timestamp_function_disable();
/**
* @brief All Timestamp registers are reset to 0x00. If the Timestamp Function is Enabled, timestamp recording will start again.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int timestamp_registers_reset();
/**
* @brief Enable Timestamp Overwrite mode
*
* @details More than 4 timestamps are recorded by overwriting oldest timestamp. Latest timestamp is always stored in the TS0 bank; earliest timestamp will be stored in the TS3 bank.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timestamp_overwrite_enable();
/**
* @brief Disable Timestamp Overwrite mode
*
* @details Timestamps are recorded (TS0 -> .. -> TS3). Latest timestamp is always stored in the TS0 bank. Further TS trigger events do not record timestamps.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timestamp_overwrite_disable();
/*Timestamp Config Register Masks*/
#define TSVLOW 0b00100000 /*Record Timestamp on VBATLOW detection */
#define TSPWM 0b00010000 /*Record Timestamp on power supply switch (VCC <-> VBAT)*/
#define TSDIN 0b00001000 /*Record Timestamp on DIN transition. Polarity controlled by DIP bitfield in RTC_Config1 register.*/
/**
* @brief Enable Timestamp Records
*
* @param[in] record_enable_mask one or more of TS*
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int timestamp_record_enable(uint8_t record_enable_mask);
/**
* @brief Disable Timestamp Records
*
* @param[in] record_disable_mask one or more of TS*
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int timestamp_record_disable(uint8_t record_disable_mask);
/**
* @brief Timer frequency selection Configuration
*
* @details
* - Register : TIMER_CONFIG
* - Bit Fields : [1:0]
* - Default : 0x0
* - Description : Timer frequency selection
*/
typedef enum {
TIMER_FREQ_1024HZ, /**< 1024Hz */
TIMER_FREQ_256HZ, /**< 256Hz */
TIMER_FREQ_64HZ, /**< 64Hz */
TIMER_FREQ_16HZ, /**< 16Hz */
}timer_freq_t;
/**
* @brief Enable timer
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_start();
/**
* @brief Pause timer, timer value is preserved
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_pause();
/**
* @brief Start timer from the paused value
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_continue();
/**
* @brief Disable timer
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_stop();
/**
* @brief Turn-on the Battery Voltage Detector Function
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int battery_voltage_detector_enable();
/**
* @brief Turn-off the Battery Voltage Detector Function
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int battery_voltage_detector_disable();
/**
* @brief Supply voltage select.
*/
typedef enum {
POW_MGMT_SUPPLY_SEL_AUTO, /**< Circuit decides whether to use VCC or VBACKUP */
POW_MGMT_SUPPLY_SEL_VCC, /**< Use VCC as supply */
POW_MGMT_SUPPLY_SEL_VBAT, /**< Use VBAT as supply */
}power_mgmt_supply_t;
/**
* @brief Select device power source
*
* @param[in] supply Supply selection, one of POW_MGMT_SUPPLY_SEL_*
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int supply_select(power_mgmt_supply_t supply);
/**
* @brief Selection of charging path's resistor value
*/
typedef enum {
TRICKLE_CHARGER_3K, /**< 3000 Ohm */
TRICKLE_CHARGER_3K_2, /**< 3000 Ohm */
TRICKLE_CHARGER_6K, /**< 6000 Ohm */
TRICKLE_CHARGER_11K, /**< 11000 Ohm */
}trickle_charger_ohm_t;
/**
* @brief Configure trickle charger charging path, also enable it
*
* @param[in] res Value of resistor
* @param[in] diode Enable diode
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int trickle_charger_enable(trickle_charger_ohm_t res, bool diode);
/**
* @brief Disable Trickle Charger
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int trickle_charger_disable();
/**
* @brief Selection of Timestamp
*/
typedef enum {
TS0, /**< Timestamp 0 */
TS1, /**< Timestamp 1 */
TS2, /**< Timestamp 2 */
TS3, /**< Timestamp 3 */
NUM_OF_TS /**< Number of Timestamps */
}ts_num_t;
/**
* @brief Timestamp Triggers
*/
typedef enum {
NOT_TRIGGERED, /**< Not Triggered */
DINF, /**< triggered by DIN transition */
VCCF, /**< triggered by VBAT -> VCC switch */
VBATF, /**< triggered by VCC -> VBAT switch */
VLOWF, /**< triggered by VLOW detection */
NUM_OF_TRIG /**< Number of Triggers */
}ts_trigger_t;
typedef struct {
ts_num_t ts_num;
ts_trigger_t ts_trigger;
uint16_t sub_sec;
struct tm ctime;
}timestamp_t;
/**
* @brief Read Timestamp info.
*
* @param[in] ts_num Timestamp number.
* @param[out] timestamp Time info.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int get_timestamp(int ts_num, timestamp_t *timestamp);
/**
* @brief correct the clock accuracy on your board. refer the datasheet for additional informations
*
* @param[in] meas Timestamp number.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int offset_configuration(int meas);
/**
* @brief Allow the OSF to indicate the oscillator status.
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int oscillator_flag_enable();
/**
* @brief Disable the oscillator flag, irrespective of the oscillator status
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int oscillator_flag_disable();
/**
* @brief Function pointer type to interrupt handler function
*/
typedef void (*interrupt_handler_function)(void *);
/**
* @brief Set interrupt handler for a specific interrupt id
*
* @param[in] id Interrupt id, one of INTR_ID_*
* @param[in] func Interrupt handler function
* @param[in] cb Interrupt handler data
*/
void set_intr_handler(intr_id_t id, interrupt_handler_function func, void *cb);
protected:
typedef struct {
uint8_t status_reg_addr;
uint8_t int_en_reg_addr;
uint8_t rtc_reset_reg_addr;
uint8_t rtc_config1_reg_addr;
uint8_t rtc_config2_reg_addr;
uint8_t timestamp_config_reg_addr;
uint8_t timer_config_reg_addr;
uint8_t sleep_config_reg_addr;
uint8_t seconds_1_128_reg_addr;
uint8_t seconds_reg_addr;
uint8_t minutes_reg_addr;
uint8_t hours_reg_addr;
uint8_t day_reg_addr;
uint8_t date_reg_addr;
uint8_t month_reg_addr;
uint8_t year_reg_addr;
uint8_t alm1_sec_reg_addr;
uint8_t alm1_min_reg_addr;
uint8_t alm1_hrs_reg_addr;
uint8_t alm1_day_date_reg_addr;
uint8_t alm1_mon_reg_addr;
uint8_t alm1_year_reg_addr;
uint8_t alm2_min_reg_addr;
uint8_t alm2_hrs_reg_addr;
uint8_t alm2_day_date_reg_addr;
uint8_t timer_count_reg_addr;
uint8_t timer_count2_reg_addr;
uint8_t timer_count1_reg_addr;
uint8_t timer_init_reg_addr;
uint8_t timer_init2_reg_addr;
uint8_t timer_init1_reg_addr;
uint8_t pwr_mgmt_reg_addr;
uint8_t trickle_reg_addr;
uint8_t offset_high_reg_addr;
uint8_t offset_low_reg_addr;
uint8_t ts0_sec_1_128_reg_addr;
uint8_t ts0_sec_reg_addr;
uint8_t ts0_min_reg_addr;
uint8_t ts0_hour_reg_addr;
uint8_t ts0_date_reg_addr;
uint8_t ts0_month_reg_addr;
uint8_t ts0_year_reg_addr;
uint8_t ts0_flags_reg_addr;
uint8_t ts1_sec_1_128_reg_addr;
uint8_t ts1_sec_reg_addr;
uint8_t ts1_min_reg_addr;
uint8_t ts1_hour_reg_addr;
uint8_t ts1_date_reg_addr;
uint8_t ts1_month_reg_addr;
uint8_t ts1_year_reg_addr;
uint8_t ts1_flags_reg_addr;
uint8_t ts2_sec_1_128_reg_addr;
uint8_t ts2_sec_reg_addr;
uint8_t ts2_min_reg_addr;
uint8_t ts2_hour_reg_addr;
uint8_t ts2_date_reg_addr;
uint8_t ts2_month_reg_addr;
uint8_t ts2_year_reg_addr;
uint8_t ts2_flags_reg_addr;
uint8_t ts3_sec_1_128_reg_addr;
uint8_t ts3_sec_reg_addr;
uint8_t ts3_min_reg_addr;
uint8_t ts3_hour_reg_addr;
uint8_t ts3_date_reg_addr;
uint8_t ts3_month_reg_addr;
uint8_t ts3_year_reg_addr;
uint8_t ts3_flags_reg_addr;
}reg_addr_t;
/* Constructors */
MAX3133X(const reg_addr_t *reg_addr, I2C *i2c, PinName inta_pin = NC, PinName intb_pin = NC);
private:
/* PRIVATE TYPE DECLARATIONS */
/* PRIVATE VARIABLE DECLARATIONS */
I2C *i2c_handler;
InterruptIn *inta_pin;
InterruptIn *intb_pin;
/* PRIVATE CONSTANT VARIABLE DECLARATIONS */
const reg_addr_t *reg_addr;
/* PRIVATE FUNCTION DECLARATIONS */
void rtc_regs_to_time(struct tm *time, const max3133x_rtc_time_regs_t *regs, uint16_t *sub_sec);
int time_to_rtc_regs(max3133x_rtc_time_regs_t *regs, const struct tm *time, hour_format_t format);
void timestamp_regs_to_time(timestamp_t *timestamp, const max3133x_ts_regs_t *timestamp_reg);
int time_to_alarm_regs(max3133x_alarm_regs_t ®s, const struct tm *alarm_time, hour_format_t format);
void alarm_regs_to_time(alarm_no_t alarm_no, struct tm *alarm_time, const max3133x_alarm_regs_t *regs, hour_format_t format);
int set_alarm_period(alarm_no_t alarm_no, max3133x_alarm_regs_t ®s, alarm_period_t period);
int set_alarm_regs(alarm_no_t alarm_no, const max3133x_alarm_regs_t *regs);
uint8_t to_24hr(uint8_t hr, uint8_t pm);
void to_12hr(uint8_t hr, uint8_t *hr_12, uint8_t *pm);
int get_rtc_time_format(hour_format_t *format);
int data_retention_mode_config(bool enable);
int battery_voltage_detector_config(bool enable);
int clkout_config(bool enable);
int i2c_timeout_config(bool enable);
int oscillator_config(bool enable);
int timestamp_overwrite_config(bool enable);
int oscillator_flag_config(bool enable);
/**
* @brief Interrupt handler function
*/
void interrupt_handler();
/**
* @brief Post interrupt jobs after interrupt is detected.
*/
void post_interrupt_work();
Thread *post_intr_work_thread;
struct handler {
void (*func)(void *);
void *cb;
};
handler interrupt_handler_list[NUM_OF_INTR_ID];
};
/** MAX31334 Device Class
*
* Hold configurations for the MAX31334
*/
class MAX31334 : public MAX3133X
{
private:
static const reg_addr_t reg_addr;
int din_sleep_entry_config(bool enable);
int din_pin_debounce_config(bool enable);
public:
typedef struct {
a1ac_t a1ac; /*RTC_CONFIG1 - Alarm1 Auto Clear */
dip_t dip; /*RTC_CONFIG1 - Digital (DIN) interrupt polarity */
data_ret_t data_ret; /*RTC_CONFIG1 - Data retention mode enable/disable. */
i2c_timeout_t i2c_timeout;/*RTC_CONFIG1 - I2C timeout enable */
en_osc_t en_osc; /*RTC_CONFIG1 - Active-high enable for the crystal oscillator */
dse_t dse; /*RTC_CONFIG2 - Digital (DIN) pin Sleep Entry Enable */
ddb_t ddb; /*RTC_CONFIG2 - Digital (DIN) pin Debounce Enable */
enclko_t enclko; /*RTC_CONFIG2 - CLKOUT enable */
clko_hz_t clko_hz; /*RTC_CONFIG2 - Set output clock frequency on INTBb/CLKOUT pin */
}rtc_config_t;
/**
* @brief Configure the device
*
* @param[in] max31334_config Device configuration
*
* @return MAX3133X_NO_ERR on success, error code on failure
*
* @note RTC_CONFIG1 and RTC_CONFIG2 registers are set.
*/
int rtc_config(rtc_config_t *max31334_config);
/**
* @brief Get device configuration
*
* @param[out] max31334_config Device configuration
*
* @return MAX3133X_NO_ERR on success, error code on failure
*
* @note RTC_CONFIG1 and RTC_CONFIG2 register values are read.
*/
int get_rtc_config(rtc_config_t *max31334_config);
/**
* @brief Initialize timer
*
* @param[in] init_val Timer initial value
* @param[in] repeat Timer repeat mode enable/disable
* @param[in] freq Timer frequency, one of TIMER_FREQ_*
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_init(uint16_t init_val, bool repeat, timer_freq_t freq);
/**
* @brief Read timer value
*
* @return timer value on success, error code on failure
*/
int timer_get();
/**
* @brief Get Sleep State
*
* @return Sleep State. 0: SLST=0 indicates the PSW SM is not in Sleep state,
* 1: SLST=1 indicates the PSW SM is in Sleep state.
* negative: on failure
*/
int get_sleep_state();
/**
* @brief Enable the Digital (DIN) pin Sleep Entry
*
* @details DIN pin can be used to enter sleep state.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int din_sleep_entry_enable();
/**
* @brief Disable the Digital (DIN) pin Sleep Entry
*
* @details DIN pin cannot be used to enter sleep state (Sleep state entry is only possible by writing SLP=1 over I2C).
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int din_sleep_entry_disable();
/**
* @brief Enable the Digital (DIN) pin Debounce function
*
* @details 50ms debounce on DIN pin enabled.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int din_pin_debounce_enable();
/**
* @brief Disable the Digital (DIN) pin Debounce function
*
* @details No debounce on DIN pin.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int din_pin_debounce_disable();
/**
* @brief Put PSW SM into Active state.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int sleep_enter();
/**
* @brief Put PSW SM into Sleep state.
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int sleep_exit();
/**
* @brief Register Configuration
*
* @details
* - Register : SLEEP_CONFIG
* - Bit Fields : [6:4]
* - Default : 0x0
* - Description : Wait State Timeout. This bitfield must be set before writing SLP=1 if a finite wait state duration is
* desired before entering the sleep state.
*/
typedef enum {
WSTO_0MS, /**< 0ms */
WSTO_8MS, /**< 8ms */
WSTO_16MS, /**< 16ms */
WSTO_24MS, /**< 24ms */
WSTO_32MS, /**< 32ms */
WSTO_40MS, /**< 40ms */
WSTO_48MS, /**< 48ms */
WSTO_56MS /**< 56ms */
}wsto_t;
/**
* @brief Set Wait State Timeout
*
* @param[in] wsto Wait State Timeout
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int set_wait_state_timeout(wsto_t wsto);
/**
* @brief Get Wait State Timeout
*
* @param[out] wsto Wait State Timeout
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int get_wait_state_timeout(wsto_t* wsto);
/*Sleep Config Register Masks*/
#define A1WE 0b00000001 /*Alarm1 Wakeup Enable */
#define A2WE 0b00000010 /*Alarm2 Wakeup Enable */
#define TWE 0b00000100 /*Timer Wakeup Enable */
#define DWE 0b00001000 /*DIN Wakeup Enable */
/**
* @brief Enable Wakeup
*
* @param[in] wakeup_enable_mask one or more of Sleep Config Register Masks
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int wakeup_enable(uint8_t wakeup_enable_mask);
/**
* @brief Disable Wakeup
*
* @param[in] wakeup_disable_mask one or more of Sleep Config Register Masks
*
* @returns MAX3133X_NO_ERR on success, error code on failure.
*/
int wakeup_disable(uint8_t wakeup_disable_mask);
MAX31334(I2C *i2c, PinName inta_pin = NC, PinName intb_pin = NC) : MAX3133X(®_addr, i2c, inta_pin, intb_pin) {}
};
/** MAX31331 Device Class
*
* Hold configurations for the MAX31331
*/
class MAX31331 : public MAX3133X
{
private:
static const reg_addr_t reg_addr;
public:
typedef struct {
a1ac_t a1ac; /*RTC_CONFIG1 - Alarm1 Auto Clear */
dip_t dip; /*RTC_CONFIG1 - Digital (DIN) interrupt polarity */
data_ret_t data_ret; /*RTC_CONFIG1 - Data retention mode enable/disable. */
i2c_timeout_t i2c_timeout;/*RTC_CONFIG1 - I2C timeout enable */
en_osc_t en_osc; /*RTC_CONFIG1 - Active-high enable for the crystal oscillator */
enclko_t enclko; /*RTC_CONFIG2 - CLKOUT enable */
clko_hz_t clko_hz; /*RTC_CONFIG2 - Set output clock frequency on INTBb/CLKOUT pin */
}rtc_config_t;
/**
* @brief Configure the device
*
* @param[in] max31331_config Device configuration
*
* @return MAX3133X_NO_ERR on success, error code on failure
*
* @note RTC_CONFIG1 and RTC_CONFIG2 registers are set.
*/
int rtc_config(rtc_config_t *max31331_config);
/**
* @brief Get device configuration
*
* @param[out] max31331_config Device configuration
*
* @return MAX3133X_NO_ERR on success, error code on failure
*
* @note RTC_CONFIG1 and RTC_CONFIG2 register values are read.
*/
int get_rtc_config(rtc_config_t *max31331_config);
/**
* @brief Initialize timer
*
* @param[in] init_val Timer initial value
* @param[in] repeat Timer repeat mode enable/disable
* @param[in] freq Timer frequency, one of TIMER_FREQ_*
*
* @return MAX3133X_NO_ERR on success, error code on failure
*/
int timer_init(uint8_t init_val, bool repeat, timer_freq_t freq);
/**
* @brief Read timer value
*
* @return timer value on success, error code on failure
*/
int timer_get();
MAX31331(I2C *i2c, PinName inta_pin = NC, PinName intb_pin = NC) : MAX3133X(®_addr, i2c, inta_pin, intb_pin) {}
};
#endif /* MAX3133X_HPP_ */