118 lines
2.4 KiB
C++
118 lines
2.4 KiB
C++
/*
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Copyright 2016-2024 melonDS team
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef RTC_H
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#define RTC_H
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#include "types.h"
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#include "Savestate.h"
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namespace melonDS
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{
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class RTC
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{
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public:
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struct StateData
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{
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u8 StatusReg1;
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u8 StatusReg2;
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u8 DateTime[7];
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u8 Alarm1[3];
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u8 Alarm2[3];
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u8 ClockAdjust;
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u8 FreeReg;
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u8 IRQFlag;
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// DSi registers
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u32 MinuteCount;
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u8 FOUT1;
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u8 FOUT2;
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u8 AlarmDate1[3];
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u8 AlarmDate2[3];
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};
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RTC(melonDS::NDS& nds);
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~RTC();
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void Reset();
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void DoSavestate(Savestate* file);
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void GetState(StateData& state) const;
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void SetState(const StateData& state);
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void GetDateTime(int& year, int& month, int& day, int& hour, int& minute, int& second) const;
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void SetDateTime(int year, int month, int day, int hour, int minute, int second);
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void ClockTimer(u32 param);
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u16 Read();
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void Write(u16 val, bool byte);
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private:
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melonDS::NDS& NDS;
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u16 IO;
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u8 Input;
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u32 InputBit;
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u32 InputPos;
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u8 Output[8];
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u32 OutputBit;
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u32 OutputPos;
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u8 CurCmd;
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StateData State;
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s32 TimerError;
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u32 ClockCount;
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void ResetState();
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void ScheduleTimer(bool first);
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u8 BCD(u8 val) const;
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u8 FromBCD(u8 val) const;
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u8 BCDIncrement(u8 val) const;
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u8 BCDSanitize(u8 val, u8 vmin, u8 vmax) const;
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void SetIRQ(u8 irq);
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void ClearIRQ(u8 irq);
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void ProcessIRQ(int type);
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u8 DaysInMonth() const;
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void CountYear();
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void CountMonth();
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void CheckEndOfMonth();
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void CountDay();
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void CountHour();
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void CountMinute();
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void CountSecond();
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void WriteDateTime(int num, u8 val);
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void SaveDateTime();
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void CmdRead();
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void CmdWrite(u8 val);
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void ByteIn(u8 val);
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};
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}
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#endif
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