cb37b1deea
Extends Clock_IncMS()'s existing sec->min->hour cascade to also roll day->month->year (with leap-year Feb 29 via Days_In_Month()), and adds Clock_RecalcWeekday() computing current_weekday via Zeller's congruence whenever the date changes, rather than trusting PCF8563's own weekday register (which would drift if the date is edited manually). Verified the formula against 2026-07-31, a known Friday.
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef __CLOCK_H__
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#define __CLOCK_H__
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#include "config.h"
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// 全局软时钟变量声明
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extern u8 current_hour;
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extern u8 current_min;
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extern u8 current_sec;
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extern u8 current_day; // 日 (1~31)
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extern u8 current_month; // 月 (1~12)
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extern u8 current_year; // 年 (0~99，代表 2000~2099，不处理世纪)
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extern u8 current_weekday; // 星期 (0=周日, 1=周一, ..., 6=周六)
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extern volatile u8 clock_updated;
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extern volatile bit second_tick_flag; // 整秒滴答标志位，每次 current_sec 递增时置 1，供主循环转换为事件
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/**
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* @brief 系统软时钟毫秒递增更新 (在 1ms 中断中调用)
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*/
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void Clock_IncMS(void);
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/**
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* @brief 返回指定年月的天数上限 (处理闰年 2 月)
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* @param year 年 (0~99，代表 2000~2099)
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* @param month 月 (1~12)
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*/
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u8 Days_In_Month(u8 year, u8 month);
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/**
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* @brief 根据年月日重新计算星期，并写回 current_weekday
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* @details 采用 Zeller 公式现算，不依赖 RTC 自身的星期寄存器，
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* 避免手动改日期后星期跟着错乱；日期发生变化(自然进位或手动调节)时都要调用一次。
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*/
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void Clock_RecalcWeekday(void);
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#endif // __CLOCK_H__
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