#include "include.h"

void rtc_clock_init(void)
{
    // printf("rtc_clock_init\n");
    tm_t tm;
    tm.year = 2025;
    tm.mon  = 1;
    tm.day = 1;
    tm.hour = 9;
    tm.min  = 0;
    tm.sec  = 0;
    //tm.weekday = get_weekday(tm.year, tm.mon, tm.day);
    RTCCNT = tm_to_time(tm);
}

//多少秒后闹钟响
AT(.text.rtc)
void rtc_set_alarm_relative_time(u32 nsec)
{
    tm_t rtc_tm;
    rtc_tm = time_to_tm(RTCCNT);                //更新时间结构体
    RTCALM = tm_to_time(rtc_tm) + nsec;         //设置闹钟相对于当前时间n秒后
}

//设置多少秒后闹钟唤醒
AT(.text.rtc)
void rtc_set_alarm_wakeup(u32 nsec)
{
    uint rtccon3 = RTCCON3;

    RTCCON0 |= BIT(18);
    RTCCON0 = (RTCCON0 & ~(0X3<<8)) | (0X2<<8);

    RTCCPND = BIT(17);                          //clear RTC alarm pending
    RTCCON9 = BIT(0);                           //clear alarm pending
    rtc_set_alarm_relative_time(nsec);

    rtccon3 |= BIT(8);                          //RTC alarm wakeup enable
    RTCCON3 = rtccon3;
}


//关闭闹钟
AT(.text.rtc)
void rtc_alarm_disable(void)
{
    // printf("%s\n", __func__);
    RTCCPND = BIT(17);                          //clear RTC alarm pending
    RTCCON9 = BIT(8);                           //clear alarm pending
    rtc_set_alarm_relative_time(0xffff);
    RTCCON3 &= ~BIT(8);
}


/*
 * 设置RTC时间
 * 输入：tm结构体指针
*/
void rtc_clock_set(tm_t rtc_tm)
{
    RTCCNT = tm_to_time(rtc_tm);
}

/*
 * 设置RTC时间
 * 输入：timestamp格林威治时间(UTC/GMT)
 *       time_zone时区(范围0~24, 表示西十二区(UTC_W12) ~ 东十二区(UTC_E12))
*/
void rtc_clock_timestamp_set(u32 timestamp, u8 time_zone)
{
    int zone_offset = (time_zone - UTC_0);
    u32 day_offset = (2020 - 1970)*365 + (2020 - 1970)/4;       //RTCCNT时间从2020年开始, 标准的是从1970年开始算,需计算偏移
    u32 offset = day_offset*86400;

    RTCCNT = timestamp + zone_offset*3600 - offset;

}

/*
 * 获取RTC时间
 * 输入: 空
   输出: rtc_tm结构体
*/
tm_t rtc_clock_get(void)
{
    return time_to_tm(RTCCNT);
}

//休眠后后RTC校准时回调函数
AT(.sleep_text.rtc)
void rtc_clock_calc_notify(void)
{
    sys_cb.rtc_cal_cnt++;
}