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/*
Copyright 2016-2023 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef RTC_H
#define RTC_H
#include "types.h"
#include "Savestate.h"
namespace melonDS
{
class RTC
{
public:
struct StateData
{
u8 StatusReg1;
u8 StatusReg2;
u8 DateTime[7];
u8 Alarm1[3];
u8 Alarm2[3];
u8 ClockAdjust;
u8 FreeReg;
u8 IRQFlag;
// DSi registers
u32 MinuteCount;
u8 FOUT1;
u8 FOUT2;
u8 AlarmDate1[3];
u8 AlarmDate2[3];
};
RTC(melonDS::NDS& nds);
~RTC();
void Reset();
void DoSavestate(Savestate* file);
void GetState(StateData& state);
void SetState(StateData& state);
void GetDateTime(int& year, int& month, int& day, int& hour, int& minute, int& second);
void SetDateTime(int year, int month, int day, int hour, int minute, int second);
void ClockTimer(u32 param);
u16 Read();
void Write(u16 val, bool byte);
private:
melonDS::NDS& NDS;
u16 IO;
u8 Input;
u32 InputBit;
u32 InputPos;
u8 Output[8];
u32 OutputBit;
u32 OutputPos;
u8 CurCmd;
StateData State;
s32 TimerError;
u32 ClockCount;
void ResetState();
void ScheduleTimer(bool first);
u8 BCD(u8 val);
u8 FromBCD(u8 val);
u8 BCDIncrement(u8 val);
u8 BCDSanitize(u8 val, u8 vmin, u8 vmax);
void SetIRQ(u8 irq);
void ClearIRQ(u8 irq);
void ProcessIRQ(int type);
u8 DaysInMonth();
void CountYear();
void CountMonth();
void CheckEndOfMonth();
void CountDay();
void CountHour();
void CountMinute();
void CountSecond();
void WriteDateTime(int num, u8 val);
void SaveDateTime();
void CmdRead();
void CmdWrite(u8 val);
void ByteIn(u8 val);
};
}
#endif
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