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Document RfuSIO32Id struct

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This commit is contained in:
PikalaxALT
2020-02-01 16:39:47 -05:00
parent 16cc1ee922
commit 9400cd09de
1 changed files with 24 additions and 24 deletions
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src/librfu_sio32id.c
+24 -24
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@@ -6,11 +6,11 @@ static s32 Sio32IDMain(void);
struct RfuSIO32Id
{
u8 unk0;
u8 MS_mode;
u8 state;
u16 unk2;
u16 unk4;
u16 unk6;
u16 count;
u16 send_id;
u16 recv_id;
u16 unk8; // unused
u16 lastId;
};
@@ -73,7 +73,7 @@ static s32 Sio32IDMain(void)
switch (gRfuSIO32Id.state)
{
case 0:
gRfuSIO32Id.unk0 = 1;
gRfuSIO32Id.MS_mode = AGB_CLK_MASTER;
REG_SIOCNT |= SIO_38400_BPS;
REG_IME = 0;
REG_IE |= INTR_FLAG_SERIAL;
@@ -84,16 +84,16 @@ static s32 Sio32IDMain(void)
case 1:
if (gRfuSIO32Id.lastId == 0)
{
if (gRfuSIO32Id.unk0 == 1)
if (gRfuSIO32Id.MS_mode == AGB_CLK_MASTER)
{
if (gRfuSIO32Id.unk2 == 0)
if (gRfuSIO32Id.count == 0)
{
REG_IME = 0;
REG_SIOCNT |= SIO_ENABLE;
REG_IME = 1;
}
}
else if (gRfuSIO32Id.unk4 != RFU_ID && !gRfuSIO32Id.unk2)
else if (gRfuSIO32Id.send_id != RFU_ID && !gRfuSIO32Id.count)
{
REG_IME = 0;
REG_IE &= ~INTR_FLAG_SERIAL;
@@ -132,39 +132,39 @@ static void Sio32IDIntr(void)
#endif
regSIODATA32 = REG_SIODATA32;
if (gRfuSIO32Id.unk0 != 1)
if (gRfuSIO32Id.MS_mode != AGB_CLK_MASTER)
REG_SIOCNT |= SIO_ENABLE;
rfuSIO32IdUnk0_times_16 = 16 * gRfuSIO32Id.unk0; // to handle side effect of inline asm
rfuSIO32IdUnk0_times_16 = 16 * gRfuSIO32Id.MS_mode; // to handle side effect of inline asm
rfuSIO32IdUnk0_times_16 = (regSIODATA32 << rfuSIO32IdUnk0_times_16) >> 16;
regSIODATA32 = (regSIODATA32 << 16 * (1 - gRfuSIO32Id.unk0)) >> 16;
regSIODATA32 = (regSIODATA32 << 16 * (1 - gRfuSIO32Id.MS_mode)) >> 16;
if (gRfuSIO32Id.lastId == 0)
{
if (rfuSIO32IdUnk0_times_16 == gRfuSIO32Id.unk6)
if (rfuSIO32IdUnk0_times_16 == gRfuSIO32Id.recv_id)
{
if (gRfuSIO32Id.unk2 > 3)
if (gRfuSIO32Id.count > 3)
{
gRfuSIO32Id.lastId = regSIODATA32;
}
else if (rfuSIO32IdUnk0_times_16 == (u16)~gRfuSIO32Id.unk4)
else if (rfuSIO32IdUnk0_times_16 == (u16)~gRfuSIO32Id.send_id)
{
negRfuSIO32IdUnk6 = ~gRfuSIO32Id.unk6;
negRfuSIO32IdUnk6 = ~gRfuSIO32Id.recv_id;
if (regSIODATA32 == negRfuSIO32IdUnk6)
++gRfuSIO32Id.unk2;
++gRfuSIO32Id.count;
}
}
else
{
gRfuSIO32Id.unk2 = gRfuSIO32Id.lastId;
gRfuSIO32Id.count = 0;
}
}
if (gRfuSIO32Id.unk2 < 4)
gRfuSIO32Id.unk4 = *(gRfuSIO32Id.unk2 + Sio32ConnectionData);
if (gRfuSIO32Id.count < 4)
gRfuSIO32Id.send_id = *(gRfuSIO32Id.count + Sio32ConnectionData);
else
gRfuSIO32Id.unk4 = RFU_ID;
gRfuSIO32Id.unk6 = ~regSIODATA32;
REG_SIODATA32 = (gRfuSIO32Id.unk4 << 16 * (1 - gRfuSIO32Id.unk0))
+ (gRfuSIO32Id.unk6 << 16 * gRfuSIO32Id.unk0);
if (gRfuSIO32Id.unk0 == 1 && (gRfuSIO32Id.unk2 || regSIODATA32 == 0x494e))
gRfuSIO32Id.send_id = RFU_ID;
gRfuSIO32Id.recv_id = ~regSIODATA32;
REG_SIODATA32 = (gRfuSIO32Id.send_id << 16 * (1 - gRfuSIO32Id.MS_mode))
+ (gRfuSIO32Id.recv_id << 16 * gRfuSIO32Id.MS_mode);
if (gRfuSIO32Id.MS_mode == AGB_CLK_MASTER && (gRfuSIO32Id.count != 0 || regSIODATA32 == 0x494e))
{
for (delay = 0; delay < 600; ++delay)
;