Maxim Integrated
Driver for MAX31331 and MAX31334 Real Time Clock ICs.
Diff: max3133x.hpp
- Revision:
- 0:4a2754e462db
diff -r 000000000000 -r 4a2754e462db max3133x.hpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/max3133x.hpp Tue Aug 02 18:20:54 2022 +0300
@@ -0,0 +1,1096 @@
+/*******************************************************************************
+ * 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,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * 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_ */