Maxim Integrated
Driver for MAX31331 and MAX31334 Real Time Clock ICs.
Diff: max3133x.cpp
- Revision:
- 0:4a2754e462db
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/max3133x.cpp Tue Aug 02 18:20:54 2022 +0300
@@ -0,0 +1,1406 @@
+/*******************************************************************************
+ * 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.
+ *******************************************************************************
+ */
+
+#include "max3133x.hpp"
+#include <iostream>
+
+#define pr_err(fmt, ...) if(1) printf(fmt " (%s:%d)\r\n", ## __VA_ARGS__, __func__, __LINE__)
+#define pr_debug(fmt, ...) if(0) printf(fmt " (%s:%d)\r\n", ## __VA_ARGS__, __func__, __LINE__)
+
+#define BCD2BIN(val) (((val) & 15) + ((val) >> 4) * 10)
+#define BIN2BCD(val) ((((val) / 10) << 4) + (val) % 10)
+#define SWAPBYTES(val) (((val & 0xFF) << 8) | ((val & 0xFF00) >> 8))
+
+#define POST_INTR_WORK_SIGNAL_ID 0x1
+
+MAX3133X::MAX3133X(const reg_addr_t *reg_addr, I2C *i2c, PinName inta_pin, PinName intb_pin)
+{
+ int ret;
+ if (i2c == NULL || reg_addr == NULL) {
+ pr_err("i2c object is invalid!");
+ return;
+ }
+
+ this->reg_addr = reg_addr;
+ i2c_handler = i2c;
+
+ ret = interrupt_disable(INT_ALL);
+ if (ret != MAX3133X_NO_ERR) {
+ pr_err("interrupt_disable failed!");
+ return;
+ }
+
+ for (int i = 0; i < NUM_OF_INTR_ID; i++) {
+ interrupt_handler_list[i].func = NULL;
+ interrupt_handler_list[i].cb = NULL;
+ }
+
+ if (inta_pin != NC) {
+ this->inta_pin = new InterruptIn(inta_pin);
+ this->inta_pin->fall(Callback<void()>(this, &MAX3133X::interrupt_handler));
+ this->inta_pin->enable_irq();
+ } else
+ this->inta_pin = NULL;
+
+ if (intb_pin != NC) {
+ this->intb_pin = new InterruptIn(intb_pin);
+ this->intb_pin->fall(Callback<void()>(this, &MAX3133X::interrupt_handler));
+ this->intb_pin->enable_irq();
+ } else
+ this->intb_pin = NULL;
+
+ if (inta_pin != NC || intb_pin != NC)
+ {
+ post_intr_work_thread = new Thread();
+ post_intr_work_thread->start(Callback<void()>(this, &MAX3133X::post_interrupt_work));
+ }
+}
+
+int MAX3133X::read_register(uint8_t reg, uint8_t *value, uint8_t len)
+{
+ int rtn_val;
+
+ if (value == NULL)
+ return MAX3133X_NULL_VALUE_ERR;
+
+ rtn_val = i2c_handler->write(MAX3133X_I2C_W, (const char *)®, 1, true);
+ if (rtn_val != 0)
+ return MAX3133X_WRITE_REG_ERR;
+
+ rtn_val = i2c_handler->read(MAX3133X_I2C_R, (char *) value, len, false);
+ if (rtn_val != 0)
+ return MAX3133X_READ_REG_ERR;
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::write_register(uint8_t reg, const uint8_t *value, uint8_t len)
+{
+ int rtn_val;
+ uint8_t *local_data;
+
+ if (value == NULL)
+ return MAX3133X_NULL_VALUE_ERR;
+
+ local_data = new uint8_t[1 + len];
+ local_data[0] = reg;
+
+ memcpy(&local_data[1], value, len);
+
+ rtn_val = i2c_handler->write(MAX3133X_I2C_W, (const char *)local_data, 1 + len);
+ delete[] local_data; //delete local_data anymore not used
+
+ if (rtn_val != 0)
+ return MAX3133X_WRITE_REG_ERR;
+
+ return MAX3133X_NO_ERR;
+}
+
+#define SET_BIT_FIELD(address, reg_name, bit_field_name, value) \
+{ int ret; \
+ ret = read_register(address, (uint8_t *)&(reg_name), 1); \
+ if (ret != MAX3133X_NO_ERR) { \
+ return ret; \
+ } \
+ if (bit_field_name != value) { \
+ bit_field_name = value; \
+ ret = write_register(address, (uint8_t *)&(reg_name), 1); \
+ if (ret != MAX3133X_NO_ERR) { \
+ return ret; \
+ } \
+ } \
+}
+
+inline void MAX3133X::rtc_regs_to_time(struct tm *time, const max3133x_rtc_time_regs_t *regs, uint16_t *sub_sec)
+{
+ if (sub_sec != NULL)
+ *sub_sec = (1000 * regs->seconds_1_128_reg.raw) / 128.0;
+
+ /* tm_sec seconds [0,61] */
+ time->tm_sec = BCD2BIN(regs->seconds_reg.bcd.value);
+
+ /* tm_min minutes [0,59] */
+ time->tm_min = BCD2BIN(regs->minutes_reg.bcd.value);
+
+ /* tm_hour hour [0,23] */
+ hour_format_t format = regs->hours_reg.bits_24hr.f_24_12 == 1 ? HOUR12 : HOUR24;
+ if (format == HOUR24)
+ time->tm_hour = BCD2BIN(regs->hours_reg.bcd_24hr.value);
+ else if (format == HOUR12) {
+ uint8_t hr24 = to_24hr(BCD2BIN(regs->hours_reg.bcd_12hr.value), regs->hours_reg.bits_12hr.am_pm);
+ time->tm_hour = hr24;
+ }
+
+ /* tm_wday day of week [0,6] (Sunday = 0) */
+ time->tm_wday = BCD2BIN(regs->day_reg.bcd.value) - 1;
+
+ /* tm_mday day of month [1,31] */
+ time->tm_mday = BCD2BIN(regs->date_reg.bcd.value);
+
+ /* tm_mon month of year [0,11] */
+ time->tm_mon = BCD2BIN(regs->month_reg.bcd.value) - 1;
+
+ /* tm_year years since 2000 */
+ if (regs->month_reg.bits.century)
+ time->tm_year = BCD2BIN(regs->year_reg.bcd.value) + 200;
+ else
+ time->tm_year = BCD2BIN(regs->year_reg.bcd.value) + 100;
+
+ /* tm_yday day of year [0,365] */
+ time->tm_yday = 0;
+
+ /* tm_isdst daylight savings flag */
+ time->tm_isdst = 0;
+}
+
+inline int MAX3133X::time_to_rtc_regs(max3133x_rtc_time_regs_t *regs, const struct tm *time, hour_format_t format)
+{
+ /*********************************************************
+ * +----------+------+---------------------------+-------+
+ * | Member | Type | Meaning | Range |
+ * +----------+------+---------------------------+-------+
+ * | tm_sec | int | seconds after the minute | 0-61* |
+ * | tm_min | int | minutes after the hour | 0-59 |
+ * | tm_hour | int | hours since midnight | 0-23 |
+ * | tm_mday | int | day of the month | 1-31 |
+ * | tm_mon | int | months since January | 0-11 |
+ * | tm_year | int | years since 1900 | |
+ * | tm_wday | int | days since Sunday | 0-6 |
+ * | tm_yday | int | days since January 1 | 0-365 |
+ * | tm_isdst | int | Daylight Saving Time flag | |
+ * +----------+------+---------------------------+-------+
+ * * tm_sec is generally 0-59. The extra range is to accommodate for leap
+ * seconds in certain systems.
+ *********************************************************/
+ regs->seconds_reg.bcd.value = BIN2BCD(time->tm_sec);
+
+ regs->minutes_reg.bcd.value = BIN2BCD(time->tm_min);
+
+ if (format == HOUR24) {
+ regs->hours_reg.bcd_24hr.value = BIN2BCD(time->tm_hour);
+ regs->hours_reg.bits_24hr.f_24_12 = HOUR24;
+ } else if (format == HOUR12) {
+ uint8_t hr_12, pm;
+ to_12hr(time->tm_hour, &hr_12, &pm);
+ regs->hours_reg.bcd_12hr.value = BIN2BCD(hr_12);
+ regs->hours_reg.bits_12hr.f_24_12 = HOUR12;
+ regs->hours_reg.bits_12hr.am_pm = pm;
+ } else {
+ pr_err("Invalid Hour Format!");
+ return MAX3133X_INVALID_TIME_ERR;
+ }
+
+ regs->day_reg.bcd.value = BIN2BCD(time->tm_wday + 1);
+ regs->date_reg.bcd.value = BIN2BCD(time->tm_mday);
+ regs->month_reg.bcd.value = BIN2BCD(time->tm_mon + 1);
+
+ if (time->tm_year >= 200) {
+ regs->month_reg.bits.century = 1;
+ regs->year_reg.bcd.value = BIN2BCD(time->tm_year - 200);
+ } else if (time->tm_year >= 100) {
+ regs->month_reg.bits.century = 0;
+ regs->year_reg.bcd.value = BIN2BCD(time->tm_year - 100);
+ } else {
+ pr_err("Invalid set date!");
+ return MAX3133X_INVALID_DATE_ERR;
+ }
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::get_time(struct tm *time, uint16_t *sub_sec)
+{
+ int ret;
+ max3133x_rtc_time_regs_t max3133x_rtc_time_regs = {};
+ if (time == NULL) {
+ pr_err("rtc_ctime is invalid!");
+ return MAX3133X_NULL_VALUE_ERR;
+ }
+
+ ret = read_register(reg_addr->seconds_1_128_reg_addr, (uint8_t *) &max3133x_rtc_time_regs.seconds_1_128_reg, sizeof(max3133x_rtc_time_regs));
+ if (ret != MAX3133X_NO_ERR) {
+ pr_err("read time registers failed!");
+ return ret;
+ }
+
+ rtc_regs_to_time(time, &max3133x_rtc_time_regs, sub_sec);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::set_time(const struct tm *time, hour_format_t format)
+{
+ int ret;
+ max3133x_rtc_time_regs_t max3133x_rtc_time_regs = {};
+
+ if (time == NULL) {
+ pr_err("rtc_ctime is invalid!");
+ return MAX3133X_NULL_VALUE_ERR;
+ }
+
+ ret = time_to_rtc_regs(&max3133x_rtc_time_regs, time, format);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ ret = write_register(reg_addr->seconds_reg_addr, (uint8_t *)&max3133x_rtc_time_regs.seconds_reg.raw, sizeof(max3133x_rtc_time_regs)-1);
+ if (ret != MAX3133X_NO_ERR) {
+ pr_err("write time registers failed!");
+ return ret;
+ }
+
+ return MAX3133X_NO_ERR;
+}
+
+inline void MAX3133X::timestamp_regs_to_time(timestamp_t *timestamp, const max3133x_ts_regs_t *timestamp_reg)
+{
+ /* tm_sec seconds [0,61] */
+ timestamp->ctime.tm_sec = BCD2BIN(timestamp_reg->ts_sec_reg.bcd.value);
+
+ /* tm_min minutes [0,59] */
+ timestamp->ctime.tm_min = BCD2BIN(timestamp_reg->ts_min_reg.bcd.value);
+
+ /* tm_hour hour [0,23] */
+ hour_format_t format = timestamp_reg->ts_hour_reg.bits_24hr.f_24_12 ? HOUR12 : HOUR24;
+ if (format == HOUR24)
+ timestamp->ctime.tm_hour = BCD2BIN(timestamp_reg->ts_hour_reg.bcd_24hr.value);
+ else if (format == HOUR12) {
+ uint8_t hr24 = to_24hr(BCD2BIN(timestamp_reg->ts_hour_reg.bcd_12hr.value), timestamp_reg->ts_hour_reg.bits_12hr.am_pm);
+ timestamp->ctime.tm_hour = hr24;
+ }
+
+ /* tm_mday day of month [1,31] */
+ timestamp->ctime.tm_mday = BCD2BIN(timestamp_reg->ts_date_reg.bcd.value);
+
+ /* tm_mon month of year [0,11] */
+ timestamp->ctime.tm_mon = BCD2BIN(timestamp_reg->ts_month_reg.bcd.value) - 1;
+
+ /* tm_year years since 2000 */
+ if (timestamp_reg->ts_month_reg.bits.century)
+ timestamp->ctime.tm_year = BCD2BIN(timestamp_reg->ts_year_reg.bcd.value) + 200;
+ else
+ timestamp->ctime.tm_year = BCD2BIN(timestamp_reg->ts_year_reg.bcd.value) + 100;
+
+ /* tm_yday day of year [0,365] */
+ timestamp->ctime.tm_yday = 0; /* TODO */
+
+ /* tm_isdst daylight savings flag */
+ timestamp->ctime.tm_isdst = 0; /* TODO */
+
+ timestamp->sub_sec = (1000 * timestamp_reg->ts_sec_1_128_reg.raw) / 128.0;
+}
+
+int MAX3133X::get_status_reg(max3133x_status_reg_t * status_reg)
+{
+ return read_register(reg_addr->status_reg_addr, &status_reg->raw, 1);
+}
+
+int MAX3133X::get_interrupt_reg(max3133x_int_en_reg_t * int_en_reg)
+{
+ return read_register(reg_addr->int_en_reg_addr, &int_en_reg->raw, 1);
+}
+
+int MAX3133X::interrupt_enable(uint8_t mask)
+{
+ int ret;
+ max3133x_int_en_reg_t int_en_reg = {};
+
+ ret = read_register(reg_addr->int_en_reg_addr, &int_en_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ int_en_reg.raw |= mask;
+ return write_register(reg_addr->int_en_reg_addr, &int_en_reg.raw, 1);
+}
+
+int MAX3133X::interrupt_disable(uint8_t mask)
+{
+ int ret;
+ max3133x_int_en_reg_t int_en_reg = {};
+
+ ret = read_register(reg_addr->int_en_reg_addr, &int_en_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ int_en_reg.raw &= ~mask;
+ return write_register(reg_addr->int_en_reg_addr, &int_en_reg.raw, 1);
+}
+
+int MAX3133X::sw_reset_assert()
+{
+ max3133x_rtc_reset_reg_t rtc_reset_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_reset_reg_addr, rtc_reset_reg, rtc_reset_reg.bits.swrst, 1);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::sw_reset_release()
+{
+ max3133x_rtc_reset_reg_t rtc_reset_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_reset_reg_addr, rtc_reset_reg, rtc_reset_reg.bits.swrst, 0);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::sw_reset()
+{
+ int ret;
+ ret = sw_reset_assert();
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ ThisThread::sleep_for(5);
+ return sw_reset_release();
+}
+
+int MAX31331::rtc_config(rtc_config_t *max31331_config)
+{
+ int ret;
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ max31331_rtc_config2_reg_t rtc_config2_reg = {};
+
+ rtc_config1_reg.bits.a1ac = max31331_config->a1ac;
+ rtc_config1_reg.bits.dip = max31331_config->dip;
+ rtc_config1_reg.bits.data_ret = max31331_config->data_ret;
+ rtc_config1_reg.bits.i2c_timeout = max31331_config->i2c_timeout;
+ rtc_config1_reg.bits.en_osc = max31331_config->en_osc;
+
+ ret = write_register(reg_addr.rtc_config1_reg_addr, &rtc_config1_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ rtc_config2_reg.bits.clko_hz = max31331_config->clko_hz;
+ rtc_config2_reg.bits.enclko = max31331_config->enclko;
+
+ return write_register(reg_addr.rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+}
+
+int MAX31334::rtc_config(rtc_config_t *max31334_config)
+{
+ int ret;
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+
+ rtc_config1_reg.bits.a1ac = max31334_config->a1ac;
+ rtc_config1_reg.bits.dip = max31334_config->dip;
+ rtc_config1_reg.bits.data_ret = max31334_config->data_ret;
+ rtc_config1_reg.bits.i2c_timeout = max31334_config->i2c_timeout;
+ rtc_config1_reg.bits.en_osc = max31334_config->en_osc;
+
+ ret = write_register(reg_addr.rtc_config1_reg_addr, &rtc_config1_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ rtc_config2_reg.bits.clko_hz = max31334_config->clko_hz;
+ rtc_config2_reg.bits.enclko = max31334_config->enclko;
+ rtc_config2_reg.bits.ddb = max31334_config->ddb;
+ rtc_config2_reg.bits.dse = max31334_config->dse;
+
+ return write_register(reg_addr.rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+}
+
+int MAX31331::get_rtc_config(rtc_config_t *max31331_config)
+{
+ int ret;
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ max31331_rtc_config2_reg_t rtc_config2_reg = {};
+
+ ret = read_register(reg_addr.rtc_config1_reg_addr, &rtc_config1_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ max31331_config->a1ac = (a1ac_t)rtc_config1_reg.bits.a1ac;
+ max31331_config->dip = (dip_t)rtc_config1_reg.bits.dip;
+ max31331_config->data_ret = (data_ret_t)rtc_config1_reg.bits.data_ret;
+ max31331_config->i2c_timeout = (i2c_timeout_t)rtc_config1_reg.bits.i2c_timeout;
+ max31331_config->en_osc = (en_osc_t)rtc_config1_reg.bits.en_osc;
+
+ ret = read_register(reg_addr.rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ max31331_config->clko_hz = (clko_hz_t)rtc_config2_reg.bits.clko_hz;
+ max31331_config->enclko = (enclko_t)rtc_config2_reg.bits.enclko;
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::get_rtc_config(rtc_config_t *max31334_config)
+{
+ int ret;
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+
+ ret = read_register(reg_addr.rtc_config1_reg_addr, &rtc_config1_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ max31334_config->a1ac = (a1ac_t)rtc_config1_reg.bits.a1ac;
+ max31334_config->dip = (dip_t)rtc_config1_reg.bits.dip;
+ max31334_config->data_ret = (data_ret_t)rtc_config1_reg.bits.data_ret;
+ max31334_config->i2c_timeout = (i2c_timeout_t)rtc_config1_reg.bits.i2c_timeout;
+ max31334_config->en_osc = (en_osc_t)rtc_config1_reg.bits.en_osc;
+
+ ret = read_register(reg_addr.rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ max31334_config->clko_hz = (clko_hz_t)rtc_config2_reg.bits.clko_hz;
+ max31334_config->ddb = (ddb_t)rtc_config2_reg.bits.ddb;
+ max31334_config->dse = (dse_t)rtc_config2_reg.bits.dse;
+ max31334_config->enclko = (enclko_t)rtc_config2_reg.bits.enclko;
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::set_alarm1_auto_clear(a1ac_t a1ac)
+{
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config1_reg_addr, rtc_config1_reg, rtc_config1_reg.bits.a1ac, a1ac);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::set_din_polarity(dip_t dip)
+{
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config1_reg_addr, rtc_config1_reg, rtc_config1_reg.bits.dip, dip);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::data_retention_mode_config(bool enable)
+{
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config1_reg_addr, rtc_config1_reg, rtc_config1_reg.bits.data_ret, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::data_retention_mode_enter()
+{
+ return data_retention_mode_config(1);
+}
+
+int MAX3133X::data_retention_mode_exit()
+{
+ return data_retention_mode_config(0);
+}
+
+int MAX3133X::i2c_timeout_config(bool enable)
+{
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config1_reg_addr, rtc_config1_reg, rtc_config1_reg.bits.i2c_timeout, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::i2c_timeout_enable()
+{
+ return i2c_timeout_config(1);
+}
+
+int MAX3133X::i2c_timeout_disable()
+{
+ return i2c_timeout_config(0);
+}
+
+int MAX3133X::oscillator_config(bool enable)
+{
+ max3133x_rtc_config1_reg_t rtc_config1_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config1_reg_addr, rtc_config1_reg, rtc_config1_reg.bits.en_osc, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::oscillator_enable()
+{
+ return oscillator_config(1);
+}
+
+int MAX3133X::oscillator_disable()
+{
+ return oscillator_config(0);
+}
+
+int MAX31334::get_sleep_state()
+{
+ int ret;
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+
+ ret = read_register(reg_addr.rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ return rtc_config2_reg.bits.slst;
+}
+
+int MAX31334::din_sleep_entry_config(bool enable)
+{
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+ SET_BIT_FIELD(reg_addr.rtc_config2_reg_addr, rtc_config2_reg, rtc_config2_reg.bits.dse, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::din_sleep_entry_enable()
+{
+ return din_sleep_entry_config(1);
+}
+
+int MAX31334::din_sleep_entry_disable()
+{
+ return din_sleep_entry_config(0);
+}
+
+int MAX31334::din_pin_debounce_config(bool enable)
+{
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+ SET_BIT_FIELD(reg_addr.rtc_config2_reg_addr, rtc_config2_reg, rtc_config2_reg.bits.ddb, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::din_pin_debounce_enable()
+{
+ return din_pin_debounce_config(1);
+}
+
+int MAX31334::din_pin_debounce_disable()
+{
+ return din_pin_debounce_config(0);
+}
+
+int MAX3133X::clkout_config(bool enable)
+{
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config2_reg_addr, rtc_config2_reg, rtc_config2_reg.bits.enclko, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::clkout_enable()
+{
+ return clkout_config(1);
+}
+
+int MAX3133X::clkout_disable()
+{
+ return clkout_config(0);
+}
+
+int MAX3133X::set_clko_freq(clko_hz_t clko_hz)
+{
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+ SET_BIT_FIELD(reg_addr->rtc_config2_reg_addr, rtc_config2_reg, rtc_config2_reg.bits.clko_hz, clko_hz);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::get_clko_freq(clko_hz_t *clko_hz)
+{
+ int ret;
+ max31334_rtc_config2_reg_t rtc_config2_reg = {};
+
+ ret = read_register(reg_addr->rtc_config2_reg_addr, &rtc_config2_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ *clko_hz = (clko_hz_t)rtc_config2_reg.bits.clko_hz;
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::timestamp_function_enable()
+{
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+ SET_BIT_FIELD(reg_addr->timestamp_config_reg_addr, timestamp_config_reg, timestamp_config_reg.bits.tse, 1);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::timestamp_function_disable()
+{
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+ SET_BIT_FIELD(reg_addr->timestamp_config_reg_addr, timestamp_config_reg, timestamp_config_reg.bits.tse, 0);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::timestamp_registers_reset()
+{
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+ SET_BIT_FIELD(reg_addr->timestamp_config_reg_addr, timestamp_config_reg, timestamp_config_reg.bits.tsr, 1);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::timestamp_overwrite_config(bool enable)
+{
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+ SET_BIT_FIELD(reg_addr->timestamp_config_reg_addr, timestamp_config_reg, timestamp_config_reg.bits.tsow, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::timestamp_overwrite_enable()
+{
+ return timestamp_overwrite_config(1);
+}
+
+int MAX3133X::timestamp_overwrite_disable()
+{
+ return timestamp_overwrite_config(0);
+}
+
+int MAX3133X::timestamp_record_enable(uint8_t record_enable_mask)
+{
+ int ret;
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+
+ if (record_enable_mask > (TSVLOW | TSPWM | TSDIN))
+ return MAX3133X_INVALID_MASK_ERR;
+
+ ret = read_register(reg_addr->timestamp_config_reg_addr, ×tamp_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timestamp_config_reg.raw |= record_enable_mask;
+ return write_register(reg_addr->timestamp_config_reg_addr, ×tamp_config_reg.raw, 1);
+}
+
+int MAX3133X::timestamp_record_disable(uint8_t record_disable_mask)
+{
+ int ret;
+ max3133x_timestamp_config_reg_t timestamp_config_reg = {};
+
+ if (record_disable_mask > (TSVLOW | TSPWM | TSDIN))
+ return MAX3133X_INVALID_MASK_ERR;
+
+ ret = read_register(reg_addr->timestamp_config_reg_addr, ×tamp_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timestamp_config_reg.raw &= ~record_disable_mask;
+ return write_register(reg_addr->timestamp_config_reg_addr, ×tamp_config_reg.raw, 1);
+}
+
+int MAX31331::timer_init(uint8_t timer_init, bool repeat, timer_freq_t freq)
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr.timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 0; /* timer is reset */
+ timer_config_reg.bits.tpause = 1; /* timer is paused */
+ timer_config_reg.bits.trpt = repeat ? 1 : 0; /* Timer repeat mode */
+ timer_config_reg.bits.tfs = freq; /* Timer frequency */
+
+ ret = write_register(reg_addr.timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ return write_register(reg_addr.timer_init_reg_addr, &timer_init, 1);
+}
+
+int MAX31334::timer_init(uint16_t timer_init, bool repeat, timer_freq_t freq)
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr.timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 0; /* timer is reset */
+ timer_config_reg.bits.tpause = 1; /* timer is paused */
+ timer_config_reg.bits.trpt = repeat ? 1 : 0; /* Timer repeat mode */
+ timer_config_reg.bits.tfs = freq; /* Timer frequency */
+
+ ret = write_register(reg_addr.timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_init = SWAPBYTES(timer_init);
+
+ return write_register(reg_addr.timer_init2_reg_addr, (uint8_t *)&timer_init, 2);
+}
+
+int MAX31331::timer_get()
+{
+ int ret;
+ uint8_t timer_count;
+
+ ret = read_register(reg_addr.timer_count_reg_addr, &timer_count, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ return timer_count;
+}
+
+int MAX31334::timer_get()
+{
+ int ret;
+ uint16_t timer_count;
+
+ ret = read_register(reg_addr.timer_count2_reg_addr, (uint8_t *)&timer_count, 2);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ return SWAPBYTES(timer_count);
+}
+
+int MAX3133X::timer_start()
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 1;
+ timer_config_reg.bits.tpause = 0;
+
+ return write_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+}
+
+int MAX3133X::timer_pause()
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 1;
+ timer_config_reg.bits.tpause = 1;
+
+ return write_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+}
+
+int MAX3133X::timer_continue()
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 1;
+ timer_config_reg.bits.tpause = 0;
+
+ return write_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+}
+
+int MAX3133X::timer_stop()
+{
+ int ret;
+ max3133x_timer_config_reg_t timer_config_reg = {};
+
+ ret = read_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timer_config_reg.bits.te = 0;
+ timer_config_reg.bits.tpause = 1;
+
+ return write_register(reg_addr->timer_config_reg_addr, &timer_config_reg.raw, 1);
+}
+
+int MAX31334::sleep_enter()
+{
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+ SET_BIT_FIELD(reg_addr.sleep_config_reg_addr, sleep_config_reg, sleep_config_reg.bits.slp, 1);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::sleep_exit()
+{
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+ SET_BIT_FIELD(reg_addr.sleep_config_reg_addr, sleep_config_reg, sleep_config_reg.bits.slp, 0);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::set_wait_state_timeout(wsto_t wsto)
+{
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+ SET_BIT_FIELD(reg_addr.sleep_config_reg_addr, sleep_config_reg, sleep_config_reg.bits.wsto, wsto);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::get_wait_state_timeout(wsto_t* wsto)
+{
+ int ret;
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+
+ ret = read_register(reg_addr.sleep_config_reg_addr, &sleep_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ *wsto = (wsto_t)sleep_config_reg.bits.wsto;
+ return MAX3133X_NO_ERR;
+}
+
+int MAX31334::wakeup_enable(uint8_t wakeup_enable_mask)
+{
+ int ret;
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+
+ ret = read_register(reg_addr.sleep_config_reg_addr, &sleep_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ sleep_config_reg.raw |= wakeup_enable_mask;
+ return write_register(reg_addr.sleep_config_reg_addr, &sleep_config_reg.raw, 1);
+}
+
+int MAX31334::wakeup_disable(uint8_t wakeup_disable_mask)
+{
+ int ret;
+ max31334_sleep_config_reg_t sleep_config_reg = {};
+
+ ret = read_register(reg_addr.sleep_config_reg_addr, &sleep_config_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ sleep_config_reg.raw &= ~wakeup_disable_mask;
+ return write_register(reg_addr.sleep_config_reg_addr, &sleep_config_reg.raw, 1);
+}
+
+int MAX3133X::battery_voltage_detector_config(bool enable)
+{
+ max3133x_pwr_mgmt_reg_t pwr_mgmt_reg = {};
+ SET_BIT_FIELD(reg_addr->pwr_mgmt_reg_addr, pwr_mgmt_reg, pwr_mgmt_reg.bits.en_vbat_detect, enable);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::battery_voltage_detector_enable()
+{
+ return battery_voltage_detector_config(1);
+}
+
+int MAX3133X::battery_voltage_detector_disable()
+{
+ return battery_voltage_detector_config(0);
+}
+
+int MAX3133X::supply_select(power_mgmt_supply_t supply)
+{
+ int ret;
+ max3133x_pwr_mgmt_reg_t pwr_mgmt_reg = {};
+
+ ret = read_register(reg_addr->pwr_mgmt_reg_addr, &pwr_mgmt_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ switch (supply) {
+ case POW_MGMT_SUPPLY_SEL_VCC:
+ pwr_mgmt_reg.bits.manual_sel = 1;
+ pwr_mgmt_reg.bits.vback_sel = 0;
+ break;
+ case POW_MGMT_SUPPLY_SEL_VBAT:
+ pwr_mgmt_reg.bits.manual_sel = 1;
+ pwr_mgmt_reg.bits.vback_sel = 1;
+ break;
+ case POW_MGMT_SUPPLY_SEL_AUTO:
+ default:
+ pwr_mgmt_reg.bits.manual_sel = 0;
+ break;
+ }
+
+ return write_register(reg_addr->pwr_mgmt_reg_addr, &pwr_mgmt_reg.raw, 1);
+}
+
+int MAX3133X::trickle_charger_enable(trickle_charger_ohm_t res, bool diode)
+{
+ max3133x_trickle_reg_reg_t trickle_reg_reg = {};
+ trickle_reg_reg.bits.trickle = res;
+
+ if (diode)
+ trickle_reg_reg.bits.trickle |= 0x04;
+
+ trickle_reg_reg.bits.en_trickle = true;
+
+ return write_register(reg_addr->trickle_reg_addr, &trickle_reg_reg.raw, 1);
+}
+
+int MAX3133X::trickle_charger_disable()
+{
+ max3133x_trickle_reg_reg_t trickle_reg_reg = {};
+ SET_BIT_FIELD(reg_addr->trickle_reg_addr, trickle_reg_reg, trickle_reg_reg.bits.en_trickle, 0);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::get_timestamp(int ts_num, timestamp_t *timestamp)
+{
+ int ret;
+ max3133x_ts_regs_t timestamp_reg;
+ max3133x_ts_flags_reg_t ts_flags_reg;
+ uint8_t ts_reg_addr;
+ uint8_t ts_flag_reg_addr = reg_addr->ts0_flags_reg_addr + sizeof(max3133x_ts_regs_t)*ts_num;
+
+ ret = read_register(ts_flag_reg_addr, (uint8_t *)&ts_flags_reg, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timestamp->ts_num = (ts_num_t)ts_num;
+ timestamp->ts_trigger = (ts_trigger_t)(ts_flags_reg.raw & 0xF);
+
+ if (ts_flags_reg.raw == NOT_TRIGGERED) // no need to read timestamp register
+ return MAX3133X_NO_ERR;
+
+ ts_reg_addr = reg_addr->ts0_sec_1_128_reg_addr + sizeof(max3133x_ts_regs_t)*ts_num;
+ ret = read_register(ts_reg_addr, (uint8_t *)×tamp_reg, sizeof(max3133x_ts_regs_t)-1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ timestamp_regs_to_time(timestamp, ×tamp_reg);
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::offset_configuration(int meas)
+{
+ short int offset;
+ double acc = (meas - 32768)*30.5175;
+
+ offset = (short int)(acc/0.477);
+
+ return write_register(reg_addr->offset_high_reg_addr, (uint8_t *)&offset, 2);
+}
+
+int MAX3133X::oscillator_flag_config(bool enable)
+{
+ max3133x_int_en_reg_t int_en_reg = {};
+ SET_BIT_FIELD(reg_addr->int_en_reg_addr, int_en_reg, int_en_reg.bits.dosf, !enable);
+ return MAX3133X_NO_ERR;
+}
+
+void MAX3133X::set_intr_handler(intr_id_t id, interrupt_handler_function func, void *cb)
+{
+ interrupt_handler_list[id].func = func;
+ interrupt_handler_list[id].cb = cb;
+}
+
+void MAX3133X::post_interrupt_work()
+{
+ int ret;
+ uint8_t mask;
+ max3133x_int_en_reg_t int_en_reg = {};
+ max3133x_status_reg_t status_reg = {};
+
+ while (true) {
+ ThisThread::flags_wait_any(POST_INTR_WORK_SIGNAL_ID);
+
+ ret = read_register(reg_addr->status_reg_addr, &status_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR) {
+ pr_err("Read status register failed!");
+ continue;
+ }
+
+ ret = read_register(reg_addr->int_en_reg_addr, &int_en_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR) {
+ pr_err("Read interrupt enable register failed!");
+ continue;
+ }
+
+ for (int i = 0; i < NUM_OF_INTR_ID; i++) {
+ mask = (1 << i);
+ if ((status_reg.raw & mask) && (int_en_reg.raw & mask)) {
+ if (interrupt_handler_list[i].func != NULL)
+ interrupt_handler_list[i].func(interrupt_handler_list[i].cb);
+ }
+ }
+ }
+}
+
+void MAX3133X::interrupt_handler()
+{
+ post_intr_work_thread->flags_set(POST_INTR_WORK_SIGNAL_ID);
+}
+
+uint8_t MAX3133X::to_24hr(uint8_t hr, uint8_t pm) {
+ if (pm) {
+ if (hr < 12)
+ hr += 12;
+ } else {
+ if (hr == 12)
+ hr -= 12;
+ }
+ return hr;
+}
+
+void MAX3133X::to_12hr(uint8_t hr, uint8_t *hr_12, uint8_t *pm) {
+ if (hr == 0) {
+ *hr_12 = 12;
+ *pm = 0;
+ } else if (hr < 12) {
+ *hr_12 = hr;
+ *pm = 0;
+ } else if (hr == 12) {
+ *hr_12 = 12;
+ *pm = 1;
+ } else {
+ *hr_12 = hr - 12;
+ *pm = 1;
+ }
+}
+
+int MAX3133X::set_alarm_period(alarm_no_t alarm_no, max3133x_alarm_regs_t ®s, alarm_period_t period)
+{
+ regs.sec.bits.am1 = 1;
+ regs.min.bits.am2 = 1;
+ regs.hrs.bits_24hr.am3 = 1;
+ regs.day_date.bits.am4 = 1;
+ regs.mon.bits.am5 = 1;
+ regs.mon.bits.am6 = 1;
+ regs.day_date.bits.dy_dt_match = 1;
+
+ switch (period) {
+ case ALARM_PERIOD_ONETIME:
+ if (alarm_no == ALARM2) /* not supported! */
+ return MAX3133X_ALARM_ONETIME_NOT_SUPP_ERR;
+ regs.mon.bits.am6 = 0;
+ case ALARM_PERIOD_YEARLY:
+ if (alarm_no == ALARM2) /* not supported! */
+ return MAX3133X_ALARM_YEARLY_NOT_SUPP_ERR;
+ regs.mon.bits.am5 = 0;
+ case ALARM_PERIOD_MONTHLY:
+ regs.day_date.bits.dy_dt_match = 0;
+ case ALARM_PERIOD_WEEKLY:
+ regs.day_date.bits.am4 = 0;
+ case ALARM_PERIOD_DAILY:
+ regs.hrs.bits_24hr.am3 = 0;
+ case ALARM_PERIOD_HOURLY:
+ regs.min.bits.am2 = 0;
+ case ALARM_PERIOD_EVERYMINUTE:
+ if ((alarm_no == ALARM2) && (period == ALARM_PERIOD_EVERYMINUTE))
+ return MAX3133X_ALARM_EVERYMINUTE_NOT_SUPP_ERR; /* Alarm2 does not support "every minute" alarm*/
+ regs.sec.bits.am1 = 0;
+ case ALARM_PERIOD_EVERYSECOND:
+ if ((alarm_no == ALARM2) && (period == ALARM_PERIOD_EVERYSECOND))
+ return MAX3133X_ALARM_EVERYSECOND_NOT_SUPP_ERR; /* Alarm2 does not support "once per second" alarm*/
+ break;
+ default:
+ return MAX3133X_INVALID_ALARM_PERIOD_ERR;
+ }
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::time_to_alarm_regs(max3133x_alarm_regs_t ®s, const struct tm *alarm_time, hour_format_t format)
+{
+ regs.sec.bcd.value = BIN2BCD(alarm_time->tm_sec);
+ regs.min.bcd.value = BIN2BCD(alarm_time->tm_min);
+
+ if (format == HOUR24)
+ regs.hrs.bcd_24hr.value = BIN2BCD(alarm_time->tm_hour);
+ else if (format == HOUR12) {
+ uint8_t hr_12, pm;
+ to_12hr(alarm_time->tm_hour, &hr_12, &pm);
+ regs.hrs.bcd_12hr.value = BIN2BCD(hr_12);
+ regs.hrs.bits_12hr.am_pm = pm;
+ } else {
+ pr_err("Invalid Hour Format!");
+ return MAX3133X_INVALID_TIME_ERR;
+ }
+
+ if (regs.day_date.bits.dy_dt_match == 0)/* Date match */
+ regs.day_date.bcd_date.value = BIN2BCD(alarm_time->tm_mday);
+ else /* Day match */
+ regs.day_date.bcd_day.value = BIN2BCD(alarm_time->tm_wday);
+
+ regs.mon.bcd.value = BIN2BCD(alarm_time->tm_mon + 1);
+
+ if (alarm_time->tm_year >= 200)
+ regs.year.bcd.value = BIN2BCD(alarm_time->tm_year - 200);
+ else if (alarm_time->tm_year >= 100)
+ regs.year.bcd.value = BIN2BCD(alarm_time->tm_year - 100);
+ else {
+ pr_err("Invalid set year!");
+ return MAX3133X_INVALID_DATE_ERR;
+ }
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::set_alarm_regs(alarm_no_t alarm_no, const max3133x_alarm_regs_t *regs)
+{
+ uint8_t len = sizeof(max3133x_alarm_regs_t);
+
+ if (alarm_no == ALARM1)
+ return write_register(reg_addr->alm1_sec_reg_addr, (uint8_t *)®s->sec.raw, len);
+ else
+ return write_register(reg_addr->alm2_min_reg_addr, (uint8_t *)®s->min.raw, len-3);
+}
+
+int MAX3133X::get_rtc_time_format(hour_format_t *format)
+{
+ int ret;
+ max3133x_hours_reg_t hours_reg = {};
+ ret = read_register(reg_addr->hours_reg_addr, (uint8_t *)&hours_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ *format = (hour_format_t)hours_reg.bits_24hr.f_24_12;
+
+ return MAX3133X_NO_ERR;
+}
+
+int MAX3133X::set_alarm(alarm_no_t alarm_no, const struct tm *alarm_time, alarm_period_t period)
+{
+ int ret;
+ max3133x_alarm_regs_t alarm_regs = {};
+ hour_format_t format = {};
+
+ ret = set_alarm_period(alarm_no, alarm_regs, period);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ ret = get_rtc_time_format(&format);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ /* Convert time structure to alarm registers */
+ ret = time_to_alarm_regs(alarm_regs, alarm_time, format);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ return set_alarm_regs(alarm_no, &alarm_regs);
+}
+
+inline void MAX3133X::alarm_regs_to_time(alarm_no_t alarm_no, struct tm *alarm_time, const max3133x_alarm_regs_t *regs, hour_format_t format)
+{
+ alarm_time->tm_min = BCD2BIN(regs->min.bcd.value);
+
+ if (format == HOUR24)
+ alarm_time->tm_hour = BCD2BIN(regs->hrs.bcd_24hr.value);
+ else if (format == HOUR12)
+ alarm_time->tm_hour = to_24hr(BCD2BIN(regs->hrs.bcd_12hr.value), regs->hrs.bits_12hr.am_pm);
+
+ if (regs->day_date.bits.dy_dt_match == 0) { /* date */
+ alarm_time->tm_mday = BCD2BIN(regs->day_date.bcd_date.value);
+ alarm_time->tm_wday = 0;
+ } else { /* day */
+ alarm_time->tm_wday = BCD2BIN(regs->day_date.bcd_day.value);
+ alarm_time->tm_mday = 0;
+ }
+
+ if (alarm_no == ALARM1) {
+ alarm_time->tm_sec = BCD2BIN(regs->sec.bcd.value);
+ alarm_time->tm_mon = BCD2BIN(regs->mon.bcd.value) - 1;
+ alarm_time->tm_year = BCD2BIN(regs->year.bcd.value) + 100; /* XXX no century bit */
+ }
+}
+
+int MAX3133X::get_alarm(alarm_no_t alarm_no, struct tm *alarm_time, alarm_period_t *period, bool *is_enabled)
+{
+ int ret;
+ max3133x_alarm_regs_t alarm_regs = {};
+ max3133x_int_en_reg_t int_en_reg = {};
+ uint8_t len = sizeof(max3133x_alarm_regs_t);
+ hour_format_t format;
+
+ ret = get_rtc_time_format(&format);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ if (alarm_no == ALARM1)
+ ret = read_register(reg_addr->alm1_sec_reg_addr, &alarm_regs.sec.raw, len);
+ else
+ ret = read_register(reg_addr->alm2_min_reg_addr, &alarm_regs.min.raw, len-3);
+
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ /* Convert alarm registers to time structure */
+ alarm_regs_to_time(alarm_no, alarm_time, &alarm_regs, format);
+
+ *period = ALARM_PERIOD_EVERYSECOND;
+
+ if (alarm_no == ALARM1) {
+ if (alarm_regs.sec.bits.am1 == 0)
+ *period = ALARM_PERIOD_EVERYMINUTE;
+ }
+
+ if (alarm_regs.min.bits.am2 == 0)
+ *period = ALARM_PERIOD_HOURLY;
+ if (alarm_regs.hrs.bits_24hr.am3 == 0)
+ *period = ALARM_PERIOD_DAILY;
+ if (alarm_regs.day_date.bits.am4 == 0)
+ *period = ALARM_PERIOD_WEEKLY;
+ if (alarm_regs.day_date.bits.dy_dt_match == 0)
+ *period = ALARM_PERIOD_MONTHLY;
+ if (alarm_no == ALARM1) {
+ if (alarm_regs.mon.bits.am5 == 0)
+ *period = ALARM_PERIOD_YEARLY;
+ if (alarm_regs.mon.bits.am6 == 0)
+ *period = ALARM_PERIOD_ONETIME;
+ }
+
+ ret = read_register(reg_addr->int_en_reg_addr, (uint8_t *)&int_en_reg.raw, 1);
+ if (ret != MAX3133X_NO_ERR)
+ return ret;
+
+ if (alarm_no == ALARM1)
+ *is_enabled = ((int_en_reg.raw & A1IE) == A1IE);
+ else
+ *is_enabled = ((int_en_reg.raw & A2IE) == A2IE);
+
+ return MAX3133X_NO_ERR;
+}
+
+const MAX3133X::reg_addr_t MAX31334::reg_addr = {
+ MAX31334_STATUS,
+ MAX31334_INT_EN,
+ MAX31334_RTC_RESET,
+ MAX31334_RTC_CONFIG1,
+ MAX31334_RTC_CONFIG2,
+ MAX31334_TIMESTAMP_CONFIG,
+ MAX31334_TIMER_CONFIG,
+ MAX31334_SLEEP_CONFIG,
+ MAX31334_SECONDS_1_128,
+ MAX31334_SECONDS,
+ MAX31334_MINUTES,
+ MAX31334_HOURS,
+ MAX31334_DAY,
+ MAX31334_DATE,
+ MAX31334_MONTH,
+ MAX31334_YEAR,
+ MAX31334_ALM1_SEC,
+ MAX31334_ALM1_MIN,
+ MAX31334_ALM1_HRS,
+ MAX31334_ALM1_DAY_DATE,
+ MAX31334_ALM1_MON,
+ MAX31334_ALM1_YEAR,
+ MAX31334_ALM2_MIN,
+ MAX31334_ALM2_HRS,
+ MAX31334_ALM2_DAY_DATE,
+ REG_NOT_AVAILABLE,
+ MAX31334_TIMER_COUNT2,
+ MAX31334_TIMER_COUNT1,
+ REG_NOT_AVAILABLE,
+ MAX31334_TIMER_INIT2,
+ MAX31334_TIMER_INIT1,
+ MAX31334_PWR_MGMT,
+ MAX31334_TRICKLE_REG,
+ MAX31334_OFFSET_HIGH,
+ MAX31334_OFFSET_LOW,
+ MAX31334_TS0_SEC_1_128,
+ MAX31334_TS0_SEC,
+ MAX31334_TS0_MIN,
+ MAX31334_TS0_HOUR,
+ MAX31334_TS0_DATE,
+ MAX31334_TS0_MONTH,
+ MAX31334_TS0_YEAR,
+ MAX31334_TS0_FLAGS,
+ MAX31334_TS1_SEC_1_128,
+ MAX31334_TS1_SEC,
+ MAX31334_TS1_MIN,
+ MAX31334_TS1_HOUR,
+ MAX31334_TS1_DATE,
+ MAX31334_TS1_MONTH,
+ MAX31334_TS1_YEAR,
+ MAX31334_TS1_FLAGS,
+ MAX31334_TS2_SEC_1_128,
+ MAX31334_TS2_SEC,
+ MAX31334_TS2_MIN,
+ MAX31334_TS2_HOUR,
+ MAX31334_TS2_DATE,
+ MAX31334_TS2_MONTH,
+ MAX31334_TS2_YEAR,
+ MAX31334_TS2_FLAGS,
+ MAX31334_TS3_SEC_1_128,
+ MAX31334_TS3_SEC,
+ MAX31334_TS3_MIN,
+ MAX31334_TS3_HOUR,
+ MAX31334_TS3_DATE,
+ MAX31334_TS3_MONTH,
+ MAX31334_TS3_YEAR,
+ MAX31334_TS3_FLAGS
+};
+
+const MAX3133X::reg_addr_t MAX31331::reg_addr = {
+ MAX31331_STATUS,
+ MAX31331_INT_EN,
+ MAX31331_RTC_RESET,
+ MAX31331_RTC_CONFIG1,
+ MAX31331_RTC_CONFIG2,
+ MAX31331_TIMESTAMP_CONFIG,
+ MAX31331_TIMER_CONFIG,
+ REG_NOT_AVAILABLE,
+ MAX31331_SECONDS_1_128,
+ MAX31331_SECONDS,
+ MAX31331_MINUTES,
+ MAX31331_HOURS,
+ MAX31331_DAY,
+ MAX31331_DATE,
+ MAX31331_MONTH,
+ MAX31331_YEAR,
+ MAX31331_ALM1_SEC,
+ MAX31331_ALM1_MIN,
+ MAX31331_ALM1_HRS,
+ MAX31331_ALM1_DAY_DATE,
+ MAX31331_ALM1_MON,
+ MAX31331_ALM1_YEAR,
+ MAX31331_ALM2_MIN,
+ MAX31331_ALM2_HRS,
+ MAX31331_ALM2_DAY_DATE,
+ MAX31331_TIMER_COUNT,
+ REG_NOT_AVAILABLE,
+ REG_NOT_AVAILABLE,
+ MAX31331_TIMER_INIT,
+ REG_NOT_AVAILABLE,
+ REG_NOT_AVAILABLE,
+ MAX31331_PWR_MGMT,
+ MAX31331_TRICKLE_REG,
+ MAX31331_OFFSET_HIGH,
+ MAX31331_OFFSET_LOW,
+ MAX31331_TS0_SEC_1_128,
+ MAX31331_TS0_SEC,
+ MAX31331_TS0_MIN,
+ MAX31331_TS0_HOUR,
+ MAX31331_TS0_DATE,
+ MAX31331_TS0_MONTH,
+ MAX31331_TS0_YEAR,
+ MAX31331_TS0_FLAGS,
+ MAX31331_TS1_SEC_1_128,
+ MAX31331_TS1_SEC,
+ MAX31331_TS1_MIN,
+ MAX31331_TS1_HOUR,
+ MAX31331_TS1_DATE,
+ MAX31331_TS1_MONTH,
+ MAX31331_TS1_YEAR,
+ MAX31331_TS1_FLAGS,
+ MAX31331_TS2_SEC_1_128,
+ MAX31331_TS2_SEC,
+ MAX31331_TS2_MIN,
+ MAX31331_TS2_HOUR,
+ MAX31331_TS2_DATE,
+ MAX31331_TS2_MONTH,
+ MAX31331_TS2_YEAR,
+ MAX31331_TS2_FLAGS,
+ MAX31331_TS3_SEC_1_128,
+ MAX31331_TS3_SEC,
+ MAX31331_TS3_MIN,
+ MAX31331_TS3_HOUR,
+ MAX31331_TS3_DATE,
+ MAX31331_TS3_MONTH,
+ MAX31331_TS3_YEAR,
+ MAX31331_TS3_FLAGS
+};