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Basic command detection

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This commit is contained in:
Pokechu22 2020-08-21 18:07:56 -07:00
parent fcb86ce1c1
commit 38e56c1e36
2 changed files with 34 additions and 3 deletions
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34
Source/Core/Core/HW/EXI/EXI_DeviceSD.cpp
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@ -25,7 +25,8 @@ void CEXISD::ImmWrite(u32 data, u32 size)
else if (size == 2 && data == 0)
{
// Get ID command
INFO_LOG_FMT(EXPANSIONINTERFACE, "SD: EXI_GetID detected (size = {:x}, data = {:x})", size, data);
INFO_LOG_FMT(EXPANSIONINTERFACE, "SD: EXI_GetID detected (size = {:x}, data = {:x})", size,
data);
get_id = true;
}
}
@ -61,11 +62,40 @@ void CEXISD::DoState(PointerWrap& p)
{
p.Do(inited);
p.Do(get_id);
p.Do(command);
p.Do(m_uPosition);
p.DoArray(cmd);
}
void CEXISD::TransferByte(u8& byte)
{
// TODO: Write-protect inversion(?)
if (m_uPosition == 0)
{
if ((byte & 0b11000000) == 0b01000000)
{
INFO_LOG_FMT(EXPANSIONINTERFACE, "EXI SD command started: {:02x}", byte);
cmd[m_uPosition++] = byte;
}
}
else if (m_uPosition < 6)
{
cmd[m_uPosition++] = byte;
if (m_uPosition == 6)
{
// Buffer now full
m_uPosition = 0;
if ((byte & 1) != 1)
{
INFO_LOG_FMT(EXPANSIONINTERFACE, "EXI SD command invalid, last bit not set: {:02x}", byte);
return;
}
// TODO: Check CRC
INFO_LOG_FMT(EXPANSIONINTERFACE, "EXI SD command received: {:02x}", fmt::join(cmd.begin(), cmd.end(), " "));
}
}
}
} // namespace ExpansionInterface

3
Source/Core/Core/HW/EXI/EXI_DeviceSD.h
View File

@ -4,6 +4,7 @@
#pragma once
#include <array>
#include <string>
#include "Common/CommonTypes.h"
@ -32,7 +33,7 @@ private:
// STATE_TO_SAVE
bool inited = false;
bool get_id = false;
int command = 0;
u32 m_uPosition = 0;
std::array<u8, 6> cmd;
};
} // namespace ExpansionInterface