ref: fbcc8d1b0e05cace2abe2083a88a8c2304efc9d7
dir: /engine/rtc/rtc.asm/
StopRTC: ; unreferenced ld a, SRAM_ENABLE ld [MBC3SRamEnable], a call LatchClock ld a, RTC_DH ld [MBC3SRamBank], a ld a, [MBC3RTC] set 6, a ; halt ld [MBC3RTC], a call CloseSRAM ret StartRTC: ld a, SRAM_ENABLE ld [MBC3SRamEnable], a call LatchClock ld a, RTC_DH ld [MBC3SRamBank], a ld a, [MBC3RTC] res 6, a ; halt ld [MBC3RTC], a call CloseSRAM ret GetTimeOfDay:: ; get time of day based on the current hour ldh a, [hHours] ; hour ld hl, TimesOfDay .check ; if we're within the given time period, ; get the corresponding time of day cp [hl] jr c, .match ; else, get the next entry inc hl inc hl ; try again jr .check .match ; get time of day inc hl ld a, [hl] ld [wTimeOfDay], a ret TimesOfDay: ; hours for the time of day ; 0400-0959 morn | 1000-1759 day | 1800-0359 nite db MORN_HOUR, NITE_F db DAY_HOUR, MORN_F db NITE_HOUR, DAY_F db MAX_HOUR, NITE_F db -1, MORN_F BetaTimesOfDay: ; unreferenced db 20, NITE_F db 40, MORN_F db 60, DAY_F db -1, MORN_F StageRTCTimeForSave: call UpdateTime ld hl, wRTC ld a, [wCurDay] ld [hli], a ldh a, [hHours] ld [hli], a ldh a, [hMinutes] ld [hli], a ldh a, [hSeconds] ld [hli], a ret SaveRTC: ld a, SRAM_ENABLE ld [MBC3SRamEnable], a call LatchClock ld hl, MBC3RTC ld a, RTC_DH ld [MBC3SRamBank], a res 7, [hl] ld a, BANK(sRTCStatusFlags) ld [MBC3SRamBank], a xor a ld [sRTCStatusFlags], a call CloseSRAM ret StartClock:: call GetClock call _FixDays call FixDays jr nc, .skip_set ; bit 5: Day count exceeds 139 ; bit 6: Day count exceeds 255 call RecordRTCStatus ; set flag on sRTCStatusFlags .skip_set call StartRTC ret _FixDays: ld hl, hRTCDayHi bit 7, [hl] jr nz, .set_bit_7 bit 6, [hl] jr nz, .set_bit_7 xor a ret .set_bit_7 ; Day count exceeds 16383 ld a, %10000000 call RecordRTCStatus ; set bit 7 on sRTCStatusFlags ret ClockContinue: call CheckRTCStatus ld c, a and %11000000 ; Day count exceeded 255 or 16383 jr nz, .time_overflow ld a, c and %00100000 ; Day count exceeded 139 jr z, .dont_update call UpdateTime ld a, [wRTC + 0] ld b, a ld a, [wCurDay] cp b jr c, .dont_update .time_overflow farcall ClearDailyTimers farcall Function170923 ld a, BANK(s5_aa8c) ; aka BANK(s5_b2fa) call OpenSRAM ld a, [s5_aa8c] inc a ld [s5_aa8c], a ld a, [s5_b2fa] inc a ld [s5_b2fa], a call CloseSRAM ret .dont_update xor a ret _InitTime:: call GetClock call FixDays ld hl, hRTCSeconds ld de, wStartSecond ld a, [wStringBuffer2 + 3] sub [hl] dec hl jr nc, .okay_secs add 60 .okay_secs ld [de], a dec de ld a, [wStringBuffer2 + 2] sbc [hl] dec hl jr nc, .okay_mins add 60 .okay_mins ld [de], a dec de ld a, [wStringBuffer2 + 1] sbc [hl] dec hl jr nc, .okay_hrs add 24 .okay_hrs ld [de], a dec de ld a, [wStringBuffer2] sbc [hl] dec hl jr nc, .okay_days add 140 ld c, 7 call SimpleDivide .okay_days ld [de], a ret