Payload is now independent of agbsdk

Are you happy now @luckytyphlosion? Kappa
This commit is contained in:
PikalaxALT
2019-04-21 21:54:29 -04:00
parent 29dc2b2284
commit 1d28c9820f
44 changed files with 8273 additions and 41 deletions
+296
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#include <gba/gba.h>
#include <gba/flash_internal.h>
static u8 sTimerNum;
static u16 sTimerCount;
static vu16 *sTimerReg;
static u16 sSavedIme;
u8 gFlashTimeoutFlag;
u8 (*PollFlashStatus)(u8 *);
const struct FlashType *gFlash;
u16 gFlashNumRemainingBytes;
const u16 *gFlashMaxTime;
u16 (*ProgramFlashByte)(u16, u32, u8);
u16 (*ProgramFlashSector)(u16, void *);
u16 (*EraseFlashChip)(void);
u16 (*EraseFlashSector)(u16);
u16 (*WaitForFlashWrite)(u8, u8 *, u8);
void SetReadFlash1(u16 *dest);
void SwitchFlashBank(u8 bankNum)
{
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0xB0);
FLASH_WRITE(0x0000, bankNum);
}
#define DELAY() \
do { \
vu16 i; \
for (i = 20000; i != 0; i--) \
; \
} while (0)
u16 ReadFlashId(void)
{
u16 flashId;
u16 readFlash1Buffer[0x20];
u8 (*readFlash1)(u8 *);
SetReadFlash1(readFlash1Buffer);
readFlash1 = (u8 (*)(u8 *))((s32)readFlash1Buffer + 1);
// Enter ID mode.
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0x90);
DELAY();
flashId = readFlash1(FLASH_BASE + 1) << 8;
flashId |= readFlash1(FLASH_BASE);
// Leave ID mode.
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0xF0);
FLASH_WRITE(0x5555, 0xF0);
DELAY();
return flashId;
}
void FlashTimerIntr(void)
{
if (sTimerCount != 0 && --sTimerCount == 0)
gFlashTimeoutFlag = 1;
}
u16 SetFlashTimerIntr(u8 timerNum, void (**intrFunc)(void))
{
if (timerNum >= 4)
return 1;
sTimerNum = timerNum;
sTimerReg = &REG_TMCNT(sTimerNum);
*intrFunc = FlashTimerIntr;
return 0;
}
void StartFlashTimer(u8 phase)
{
const u16 *maxTime = &gFlashMaxTime[phase * 3];
sSavedIme = REG_IME;
REG_IME = 0;
sTimerReg[1] = 0;
REG_IE |= (INTR_FLAG_TIMER0 << sTimerNum);
gFlashTimeoutFlag = 0;
sTimerCount = *maxTime++;
*sTimerReg++ = *maxTime++;
*sTimerReg-- = *maxTime++;
REG_IF = (INTR_FLAG_TIMER0 << sTimerNum);
REG_IME = 1;
}
void StopFlashTimer(void)
{
REG_IME = 0;
*sTimerReg++ = 0;
*sTimerReg-- = 0;
REG_IE &= ~(INTR_FLAG_TIMER0 << sTimerNum);
REG_IME = sSavedIme;
}
u8 ReadFlash1(u8 *addr)
{
return *addr;
}
void SetReadFlash1(u16 *dest)
{
u16 *src;
u16 i;
PollFlashStatus = (u8 (*)(u8 *))((s32)dest + 1);
src = (u16 *)ReadFlash1;
src = (u16 *)((s32)src ^ 1);
i = ((s32)SetReadFlash1 - (s32)ReadFlash1) >> 1;
while (i != 0)
{
*dest++ = *src++;
i--;
}
}
void ReadFlash_Core(u8 *src, u8 *dest, u32 size)
{
while (size-- != 0)
{
*dest++ = *src++;
}
}
void ReadFlash(u16 sectorNum, u32 offset, void *dest, u32 size)
{
u8 *src;
u16 i;
u16 readFlash_Core_Buffer[0x40];
u16 *funcSrc;
u16 *funcDest;
void (*readFlash_Core)(u8 *, u8 *, u32);
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
if (gFlash->romSize == FLASH_ROM_SIZE_1M)
{
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
}
funcSrc = (u16 *)ReadFlash_Core;
funcSrc = (u16 *)((s32)funcSrc ^ 1);
funcDest = readFlash_Core_Buffer;
i = ((s32)ReadFlash - (s32)ReadFlash_Core) >> 1;
while (i != 0)
{
*funcDest++ = *funcSrc++;
i--;
}
readFlash_Core = (void (*)(u8 *, u8 *, u32))((s32)readFlash_Core_Buffer + 1);
src = FLASH_BASE + (sectorNum << gFlash->sector.shift) + offset;
readFlash_Core(src, dest, size);
}
u32 VerifyFlashSector_Core(u8 *src, u8 *tgt, u32 size)
{
while (size-- != 0)
{
if (*tgt++ != *src++)
return (u32)(tgt - 1);
}
return 0;
}
u32 VerifyFlashSector(u16 sectorNum, u8 *src)
{
u16 i;
u16 verifyFlashSector_Core_Buffer[0x80];
u16 *funcSrc;
u16 *funcDest;
u8 *tgt;
u16 size;
u32 (*verifyFlashSector_Core)(u8 *, u8 *, u32);
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
if (gFlash->romSize == FLASH_ROM_SIZE_1M)
{
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
}
funcSrc = (u16 *)VerifyFlashSector_Core;
funcSrc = (u16 *)((s32)funcSrc ^ 1);
funcDest = verifyFlashSector_Core_Buffer;
i = ((s32)VerifyFlashSector - (s32)VerifyFlashSector_Core) >> 1;
while (i != 0)
{
*funcDest++ = *funcSrc++;
i--;
}
verifyFlashSector_Core = (u32 (*)(u8 *, u8 *, u32))((s32)verifyFlashSector_Core_Buffer + 1);
tgt = FLASH_BASE + (sectorNum << gFlash->sector.shift);
size = gFlash->sector.size;
return verifyFlashSector_Core(src, tgt, size);
}
u32 VerifyFlashSectorNBytes(u16 sectorNum, u8 *src, u32 n)
{
u16 i;
u16 verifyFlashSector_Core_Buffer[0x80];
u16 *funcSrc;
u16 *funcDest;
u8 *tgt;
u32 (*verifyFlashSector_Core)(u8 *, u8 *, u32);
if (gFlash->romSize == FLASH_ROM_SIZE_1M)
{
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
}
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
funcSrc = (u16 *)VerifyFlashSector_Core;
funcSrc = (u16 *)((s32)funcSrc ^ 1);
funcDest = verifyFlashSector_Core_Buffer;
i = ((s32)VerifyFlashSector - (s32)VerifyFlashSector_Core) >> 1;
while (i != 0)
{
*funcDest++ = *funcSrc++;
i--;
}
verifyFlashSector_Core = (u32 (*)(u8 *, u8 *, u32))((s32)verifyFlashSector_Core_Buffer + 1);
tgt = FLASH_BASE + (sectorNum << gFlash->sector.shift);
return verifyFlashSector_Core(src, tgt, n);
}
u32 ProgramFlashSectorAndVerify(u16 sectorNum, u8 *src)
{
u8 i;
u32 result;
for (i = 0; i < 3; i++)
{
result = ProgramFlashSector(sectorNum, src);
if (result != 0)
continue;
result = VerifyFlashSector(sectorNum, src);
if (result == 0)
break;
}
return result;
}
u32 ProgramFlashSectorAndVerifyNBytes(u16 sectorNum, void *src, u32 n)
{
u8 i;
u32 result;
for (i = 0; i < 3; i++)
{
result = ProgramFlashSector(sectorNum, src);
if (result != 0)
continue;
result = VerifyFlashSectorNBytes(sectorNum, src, n);
if (result == 0)
break;
}
return result;
}
+86
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#include "gba/gba.h"
#include "gba/flash_internal.h"
static const char AgbLibFlashVersion[] = "FLASH1M_V103";
const struct FlashSetupInfo * const sSetupInfos[] =
{
&MX29L010,
&LE26FV10N1TS,
&DefaultFlash
};
u32 IdentifyFlash(void)
{
u16 result;
u16 flashId;
const struct FlashSetupInfo * const *setupInfo;
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
flashId = ReadFlashId();
setupInfo = sSetupInfos;
result = 1;
for (;;)
{
if ((*setupInfo)->type.ids.separate.makerId == 0)
break;
if (flashId == (*setupInfo)->type.ids.joined)
{
result = 0;
break;
}
setupInfo++;
}
ProgramFlashByte = (*setupInfo)->programFlashByte;
ProgramFlashSector = (*setupInfo)->programFlashSector;
EraseFlashChip = (*setupInfo)->eraseFlashChip;
EraseFlashSector = (*setupInfo)->eraseFlashSector;
WaitForFlashWrite = (*setupInfo)->WaitForFlashWrite;
gFlashMaxTime = (*setupInfo)->maxTime;
gFlash = &(*setupInfo)->type;
return result;
}
u16 WaitForFlashWrite_Common(u8 phase, u8 *addr, u8 lastData)
{
u16 result = 0;
u8 status;
StartFlashTimer(phase);
while ((status = PollFlashStatus(addr)) != lastData)
{
if (status & 0x20)
{
// The write operation exceeded the flash chip's time limit.
if (PollFlashStatus(addr) == lastData)
break;
FLASH_WRITE(0x5555, 0xF0);
result = phase | 0xA000u;
break;
}
if (gFlashTimeoutFlag)
{
if (PollFlashStatus(addr) == lastData)
break;
FLASH_WRITE(0x5555, 0xF0);
result = phase | 0xC000u;
break;
}
}
StopFlashTimer();
return result;
}
+31
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#include "gba/gba.h"
#include "gba/flash_internal.h"
const u16 leMaxTime[] =
{
10, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
10, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
2000, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
2000, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
};
const struct FlashSetupInfo LE26FV10N1TS =
{
ProgramFlashByte_MX,
ProgramFlashSector_MX,
EraseFlashChip_MX,
EraseFlashSector_MX,
WaitForFlashWrite_Common,
leMaxTime,
{
131072, // ROM size
{
4096, // sector size
12, // bit shift to multiply by sector size (4096 == 1 << 12)
32, // number of sectors
0 // appears to be unused
},
{ 3, 1 }, // wait state setup data
{ { 0x62, 0x13 } } // ID
}
};
+193
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#include "gba/gba.h"
#include "gba/flash_internal.h"
const u16 mxMaxTime[] =
{
10, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
10, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
2000, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
2000, 65469, TIMER_ENABLE | TIMER_INTR_ENABLE | TIMER_256CLK,
};
const struct FlashSetupInfo MX29L010 =
{
ProgramFlashByte_MX,
ProgramFlashSector_MX,
EraseFlashChip_MX,
EraseFlashSector_MX,
WaitForFlashWrite_Common,
mxMaxTime,
{
131072, // ROM size
{
4096, // sector size
12, // bit shift to multiply by sector size (4096 == 1 << 12)
32, // number of sectors
0 // appears to be unused
},
{ 3, 1 }, // wait state setup data
{ { 0xC2, 0x09 } } // ID
}
};
const struct FlashSetupInfo DefaultFlash =
{
ProgramFlashByte_MX,
ProgramFlashSector_MX,
EraseFlashChip_MX,
EraseFlashSector_MX,
WaitForFlashWrite_Common,
mxMaxTime,
{
131072, // ROM size
{
4096, // sector size
12, // bit shift to multiply by sector size (4096 == 1 << 12)
32, // number of sectors
0 // appears to be unused
},
{ 3, 1 }, // wait state setup data
{ { 0x00, 0x00 } } // ID of 0
}
};
u16 EraseFlashChip_MX(void)
{
u16 result;
u16 readFlash1Buffer[0x20];
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | gFlash->wait[0];
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0x80);
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0x10);
SetReadFlash1(readFlash1Buffer);
result = WaitForFlashWrite(3, FLASH_BASE, 0xFF);
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
return result;
}
u16 EraseFlashSector_MX(u16 sectorNum)
{
u16 numTries;
u16 result;
u8 *addr;
u16 readFlash1Buffer[0x20];
if (sectorNum >= gFlash->sector.count)
return 0x80FF;
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
numTries = 0;
try_erase:
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | gFlash->wait[0];
addr = FLASH_BASE + (sectorNum << gFlash->sector.shift);
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0x80);
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
*addr = 0x30;
SetReadFlash1(readFlash1Buffer);
result = WaitForFlashWrite(2, addr, 0xFF);
if (!(result & 0xA000) || numTries > 3)
goto done;
numTries++;
goto try_erase;
done:
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | WAITCNT_SRAM_8;
return result;
}
u16 ProgramFlashByte_MX(u16 sectorNum, u32 offset, u8 data)
{
u8 *addr;
u16 readFlash1Buffer[0x20];
if (offset >= gFlash->sector.size)
return 0x8000;
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
addr = FLASH_BASE + (sectorNum << gFlash->sector.shift) + offset;
SetReadFlash1(readFlash1Buffer);
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | gFlash->wait[0];
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0xA0);
*addr = data;
return WaitForFlashWrite(1, addr, data);
}
static u16 ProgramByte(u8 *src, u8 *dest)
{
FLASH_WRITE(0x5555, 0xAA);
FLASH_WRITE(0x2AAA, 0x55);
FLASH_WRITE(0x5555, 0xA0);
*dest = *src;
return WaitForFlashWrite(1, dest, *src);
}
u16 ProgramFlashSector_MX(u16 sectorNum, void *src)
{
u16 result;
u8 *dest;
u16 readFlash1Buffer[0x20];
if (sectorNum >= gFlash->sector.count)
return 0x80FF;
result = EraseFlashSector_MX(sectorNum);
if (result != 0)
return result;
SwitchFlashBank(sectorNum / SECTORS_PER_BANK);
sectorNum %= SECTORS_PER_BANK;
SetReadFlash1(readFlash1Buffer);
REG_WAITCNT = (REG_WAITCNT & ~WAITCNT_SRAM_MASK) | gFlash->wait[0];
gFlashNumRemainingBytes = gFlash->sector.size;
dest = FLASH_BASE + (sectorNum << gFlash->sector.shift);
while (gFlashNumRemainingBytes > 0)
{
result = ProgramByte(src, dest);
if (result != 0)
break;
gFlashNumRemainingBytes--;
src++;
dest++;
}
return result;
}
+2 -2
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@@ -1,5 +1,5 @@
#include <gba/gba.h>
#include <agb_flash.h>
#include "gba/gba.h"
#include "gba/flash_internal.h"
#include "constants/vars.h"
#include "global.h"
#include "main.h"
+1 -1
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@@ -1,4 +1,4 @@
#include <gba/gba.h>
#include "gba/gba.h"
#include "global.h"
#include "main.h"
#include "rtc.h"
+2 -2
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@@ -1,5 +1,5 @@
#include <gba/gba.h>
#include <siirtc.h>
#include "gba/gba.h"
#include "siirtc.h"
#include "global.h"
#include "main.h"
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// Ruby/Sapphire/Emerald cartridges contain a Seiko Instruments Inc. (SII)
// S-3511A real-time clock (RTC). This library ("SIIRTC_V001") is for
// communicating with the RTC.
#include "gba/gba.h"
#include "siirtc.h"
#define STATUS_INTFE 0x02 // frequency interrupt enable
#define STATUS_INTME 0x08 // per-minute interrupt enable
#define STATUS_INTAE 0x20 // alarm interrupt enable
#define STATUS_24HOUR 0x40 // 0: 12-hour mode, 1: 24-hour mode
#define STATUS_POWER 0x80 // power on or power failure occurred
#define TEST_MODE 0x80 // flag in the "second" byte
#define ALARM_AM 0x00
#define ALARM_PM 0x80
#define OFFSET_YEAR offsetof(struct SiiRtcInfo, year)
#define OFFSET_MONTH offsetof(struct SiiRtcInfo, month)
#define OFFSET_DAY offsetof(struct SiiRtcInfo, day)
#define OFFSET_DAY_OF_WEEK offsetof(struct SiiRtcInfo, dayOfWeek)
#define OFFSET_HOUR offsetof(struct SiiRtcInfo, hour)
#define OFFSET_MINUTE offsetof(struct SiiRtcInfo, minute)
#define OFFSET_SECOND offsetof(struct SiiRtcInfo, second)
#define OFFSET_STATUS offsetof(struct SiiRtcInfo, status)
#define OFFSET_ALARM_HOUR offsetof(struct SiiRtcInfo, alarmHour)
#define OFFSET_ALARM_MINUTE offsetof(struct SiiRtcInfo, alarmMinute)
#define INFO_BUF(info, index) (*((u8 *)(info) + (index)))
#define DATETIME_BUF(info, index) INFO_BUF(info, OFFSET_YEAR + index)
#define DATETIME_BUF_LEN (OFFSET_SECOND - OFFSET_YEAR + 1)
#define TIME_BUF(info, index) INFO_BUF(info, OFFSET_HOUR + index)
#define TIME_BUF_LEN (OFFSET_SECOND - OFFSET_HOUR + 1)
#define WR 0 // command for writing data
#define RD 1 // command for reading data
#define CMD(n) (0x60 | (n << 1))
#define CMD_RESET CMD(0)
#define CMD_STATUS CMD(1)
#define CMD_DATETIME CMD(2)
#define CMD_TIME CMD(3)
#define CMD_ALARM CMD(4)
#define GPIO_PORT_DATA (*(vu16 *)0x80000C4)
#define GPIO_PORT_DIRECTION (*(vu16 *)0x80000C6)
#define GPIO_PORT_READ_ENABLE (*(vu16 *)0x80000C8)
extern vu16 GPIOPortDirection;
static u16 sDummy; // unused variable
static bool8 sLocked;
static int WriteCommand(u8 value);
static int WriteData(u8 value);
static u8 ReadData();
static void EnableGpioPortRead();
static void DisableGpioPortRead();
static const char AgbLibRtcVersion[] = "SIIRTC_V001";
void SiiRtcUnprotect()
{
EnableGpioPortRead();
sLocked = FALSE;
}
void SiiRtcProtect()
{
DisableGpioPortRead();
sLocked = TRUE;
}
u8 SiiRtcProbe()
{
u8 errorCode;
struct SiiRtcInfo rtc;
if (!SiiRtcGetStatus(&rtc))
return 0;
errorCode = 0;
if ((rtc.status & (SIIRTCINFO_POWER | SIIRTCINFO_24HOUR)) == SIIRTCINFO_POWER
|| (rtc.status & (SIIRTCINFO_POWER | SIIRTCINFO_24HOUR)) == 0)
{
// The RTC is in 12-hour mode. Reset it and switch to 24-hour mode.
// Note that the conditions are redundant and equivalent to simply
// "(rtc.status & SIIRTCINFO_24HOUR) == 0". It's possible that this
// was also intended to handle resetting the clock after power failure
// but a mistake was made.
if (!SiiRtcReset())
return 0;
errorCode++;
}
SiiRtcGetTime(&rtc);
if (rtc.second & TEST_MODE)
{
// The RTC is in test mode. Reset it to leave test mode.
if (!SiiRtcReset())
return (errorCode << 4) & 0xF0;
errorCode++;
}
return (errorCode << 4) | 1;
}
bool8 SiiRtcReset()
{
u8 result;
struct SiiRtcInfo rtc;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_RESET | WR);
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
rtc.status = SIIRTCINFO_24HOUR;
result = SiiRtcSetStatus(&rtc);
return result;
}
bool8 SiiRtcGetStatus(struct SiiRtcInfo *rtc)
{
u8 statusData;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_STATUS | RD);
GPIO_PORT_DIRECTION = 5;
statusData = ReadData();
rtc->status = (statusData & (STATUS_POWER | STATUS_24HOUR))
| ((statusData & STATUS_INTAE) >> 3)
| ((statusData & STATUS_INTME) >> 2)
| ((statusData & STATUS_INTFE) >> 1);
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcSetStatus(struct SiiRtcInfo *rtc)
{
u8 statusData;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
statusData = STATUS_24HOUR
| ((rtc->status & SIIRTCINFO_INTAE) << 3)
| ((rtc->status & SIIRTCINFO_INTME) << 2)
| ((rtc->status & SIIRTCINFO_INTFE) << 1);
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_STATUS | WR);
WriteData(statusData);
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcGetDateTime(struct SiiRtcInfo *rtc)
{
u8 i;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_DATETIME | RD);
GPIO_PORT_DIRECTION = 5;
for (i = 0; i < DATETIME_BUF_LEN; i++)
DATETIME_BUF(rtc, i) = ReadData();
INFO_BUF(rtc, OFFSET_HOUR) &= 0x7F;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcSetDateTime(struct SiiRtcInfo *rtc)
{
u8 i;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_DATETIME | WR);
for (i = 0; i < DATETIME_BUF_LEN; i++)
WriteData(DATETIME_BUF(rtc, i));
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcGetTime(struct SiiRtcInfo *rtc)
{
u8 i;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_TIME | RD);
GPIO_PORT_DIRECTION = 5;
for (i = 0; i < TIME_BUF_LEN; i++)
TIME_BUF(rtc, i) = ReadData();
INFO_BUF(rtc, OFFSET_HOUR) &= 0x7F;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcSetTime(struct SiiRtcInfo *rtc)
{
u8 i;
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIO_PORT_DIRECTION = 7;
WriteCommand(CMD_TIME | WR);
for (i = 0; i < TIME_BUF_LEN; i++)
WriteData(TIME_BUF(rtc, i));
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
bool8 SiiRtcSetAlarm(struct SiiRtcInfo *rtc)
{
u8 i;
u8 alarmData[2];
if (sLocked == TRUE)
return FALSE;
sLocked = TRUE;
// Decode BCD.
alarmData[0] = (rtc->alarmHour & 0xF) + 10 * ((rtc->alarmHour >> 4) & 0xF);
// The AM/PM flag must be set correctly even in 24-hour mode.
if (alarmData[0] < 12)
alarmData[0] = rtc->alarmHour | ALARM_AM;
else
alarmData[0] = rtc->alarmHour | ALARM_PM;
alarmData[1] = rtc->alarmMinute;
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 5;
GPIOPortDirection = 7; // Why is this the only instance that uses a symbol?
WriteCommand(CMD_ALARM | WR);
for (i = 0; i < 2; i++)
WriteData(alarmData[i]);
GPIO_PORT_DATA = 1;
GPIO_PORT_DATA = 1;
sLocked = FALSE;
return TRUE;
}
static int WriteCommand(u8 value)
{
u8 i;
u8 temp;
for (i = 0; i < 8; i++)
{
temp = ((value >> (7 - i)) & 1);
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 5;
}
// control reaches end of non-void function
}
static int WriteData(u8 value)
{
u8 i;
u8 temp;
for (i = 0; i < 8; i++)
{
temp = ((value >> i) & 1);
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 4;
GPIO_PORT_DATA = (temp << 1) | 5;
}
// control reaches end of non-void function
}
static u8 ReadData()
{
u8 i;
u8 temp;
u8 value;
for (i = 0; i < 8; i++)
{
GPIO_PORT_DATA = 4;
GPIO_PORT_DATA = 4;
GPIO_PORT_DATA = 4;
GPIO_PORT_DATA = 4;
GPIO_PORT_DATA = 4;
GPIO_PORT_DATA = 5;
temp = ((GPIO_PORT_DATA & 2) >> 1);
value = (value >> 1) | (temp << 7); // UB: accessing uninitialized var
}
return value;
}
static void EnableGpioPortRead()
{
GPIO_PORT_READ_ENABLE = 1;
}
static void DisableGpioPortRead()
{
GPIO_PORT_READ_ENABLE = 0;
}