watch_rtc.h

/*
 * MIT License
 *
 * Copyright (c) 2020 Joey Castillo
 *
 * 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 THE
 * AUTHORS OR COPYRIGHT HOLDERS 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.
 */
#ifndef _WATCH_RTC_H_INCLUDED
#define _WATCH_RTC_H_INCLUDED
 
#include "watch.h"
#include "hpl_calendar.h"
 
 
#define WATCH_RTC_REFERENCE_YEAR (2020)
 
typedef union {
    struct {
        uint32_t second : 6;    // 0-59
        uint32_t minute : 6;    // 0-59
        uint32_t hour : 5;      // 0-23
        uint32_t day : 5;       // 1-31
        uint32_t month : 4;     // 1-12
        uint32_t year : 6;      // 0-63 (representing 2020-2083)
    } unit;
    uint32_t reg;               // the bit-packed value as expected by the RTC peripheral's CLOCK register.
} watch_date_time;
 
typedef enum watch_rtc_alarm_match {
    ALARM_MATCH_DISABLED = 0,
    ALARM_MATCH_SS,
    ALARM_MATCH_MMSS,
    ALARM_MATCH_HHMMSS,
} watch_rtc_alarm_match;
 
bool _watch_rtc_is_enabled(void);
 
void watch_rtc_set_date_time(watch_date_time date_time);
 
watch_date_time watch_rtc_get_date_time(void);
 
void watch_rtc_register_alarm_callback(ext_irq_cb_t callback, watch_date_time alarm_time, watch_rtc_alarm_match mask);
 
void watch_rtc_disable_alarm_callback(void);
 
void watch_rtc_register_tick_callback(ext_irq_cb_t callback);
 
void watch_rtc_disable_tick_callback(void);
 
void watch_rtc_register_periodic_callback(ext_irq_cb_t callback, uint8_t frequency);
 
void watch_rtc_disable_periodic_callback(uint8_t frequency);
 
void watch_rtc_disable_matching_periodic_callbacks(uint8_t mask);
 
void watch_rtc_disable_all_periodic_callbacks(void);
 
void watch_rtc_enable(bool en);
 
void watch_rtc_freqcorr_write(int16_t value, int16_t sign);
 
#endif