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/*
* Copyright (C) 2017 FIX94
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
#include <gccore.h>
#include <stdio.h>
#include <string.h>
#include "wiidrc_structs.h"
#include "wiidrc/wiidrc.h"
static struct WiiDRCStat __WiiDRC_Status;
static struct WiiDRCData __WiiDRC_PadData;
static struct WiiDRCButtons __WiiDRC_PadButtons;
static bool __WiiDRC_ShutdownRequested;
static u32 __WiiDRC_Inited = 0;
static u8 *__WiiDRC_I2CBuf = NULL;
static u8 *__WiiDRC_DRCStateBuf = NULL;
static bool __WiiDRC_SetI2CBuf()
{
DCInvalidateRange((void*)0x938B2964, 4);
if(*(vu32*)0x938B2964 == 0x138BB004) //r569
{
__WiiDRC_I2CBuf = (u8*)0x938BB004;
return true;
}
DCInvalidateRange((void*)0x938B2564, 4);
if(*(vu32*)0x938B2564 == 0x138BB004) //r570
{
__WiiDRC_I2CBuf = (u8*)0x938BB004;
return true;
}
else if(*(vu32*)0x938B2564 == 0x138BA004) //r590
{
__WiiDRC_I2CBuf = (u8*)0x938BA004;
return true;
}
return false;
}
static bool __WiiDRC_SetDRCStateBuf()
{
//TODO r569
DCInvalidateRange((void*)0x938B563C, 4);
if(*(vu32*)0x938B563C == 0x138BE770) //r570
{
__WiiDRC_DRCStateBuf = (u8*)0x938BE770;
return true;
}
DCInvalidateRange((void*)0x938B5724, 4);
if(*(vu32*)0x938B5724 == 0x138BD770) //r590
{
__WiiDRC_DRCStateBuf = (u8*)0x938BD770;
return true;
}
return false;
}
bool WiiDRC_Init()
{
if(__WiiDRC_Inited == 1)
return false;
if(!__WiiDRC_SetI2CBuf())
return false;
//can fail on r569 for now
__WiiDRC_SetDRCStateBuf();
__WiiDRC_Inited = 1;
WiiDRC_Recalibrate(); //sets up __WiiDRC_Status
memset(&__WiiDRC_PadData,0,sizeof(struct WiiDRCData));
memset(&__WiiDRC_PadButtons,0,sizeof(struct WiiDRCButtons));
__WiiDRC_ShutdownRequested = false;
return true;
}
bool WiiDRC_Inited()
{
return !!__WiiDRC_Inited;
}
bool WiiDRC_Recalibrate()
{
if(__WiiDRC_Inited == 0)
return false;
DCInvalidateRange(__WiiDRC_I2CBuf,9);
__WiiDRC_Status.xAxisLmid = (s8)(__WiiDRC_I2CBuf[4]-0x80);
__WiiDRC_Status.yAxisLmid = (s8)(__WiiDRC_I2CBuf[5]-0x80);
__WiiDRC_Status.xAxisRmid = (s8)(__WiiDRC_I2CBuf[6]-0x80);
__WiiDRC_Status.yAxisRmid = (s8)(__WiiDRC_I2CBuf[7]-0x80);
return true;
}
bool WiiDRC_ScanPads()
{
if(__WiiDRC_Inited == 0)
return false;
DCInvalidateRange(__WiiDRC_I2CBuf,9);
__WiiDRC_ShutdownRequested = !!(__WiiDRC_I2CBuf[1]&0x80);
__WiiDRC_PadData.button = (__WiiDRC_I2CBuf[2]<<8) | (__WiiDRC_I2CBuf[3]);
__WiiDRC_PadData.xAxisL = ((s8)(__WiiDRC_I2CBuf[4]-0x80)) - __WiiDRC_Status.xAxisLmid;
__WiiDRC_PadData.yAxisL = ((s8)(__WiiDRC_I2CBuf[5]-0x80)) - __WiiDRC_Status.yAxisLmid;
__WiiDRC_PadData.xAxisR = ((s8)(__WiiDRC_I2CBuf[6]-0x80)) - __WiiDRC_Status.xAxisRmid;
__WiiDRC_PadData.yAxisR = ((s8)(__WiiDRC_I2CBuf[7]-0x80)) - __WiiDRC_Status.yAxisRmid;
__WiiDRC_PadData.extra = __WiiDRC_I2CBuf[8];
__WiiDRC_PadData.battery = (__WiiDRC_PadData.extra>>1)&7;
u16 newstate, oldstate;
newstate = __WiiDRC_PadData.button;
oldstate = __WiiDRC_PadButtons.state;
__WiiDRC_PadButtons.state = newstate;
__WiiDRC_PadButtons.up = oldstate & ~newstate;
__WiiDRC_PadButtons.down = newstate & (newstate ^ oldstate);
return true;
}
bool WiiDRC_Connected()
{
if(__WiiDRC_DRCStateBuf)
{
DCInvalidateRange(__WiiDRC_DRCStateBuf, 4);
return !!(*(vu32*)__WiiDRC_DRCStateBuf);
}
return true; //default connect
}
bool WiiDRC_ShutdownRequested()
{
return __WiiDRC_ShutdownRequested;
}
const u8 *WiiDRC_GetRawI2CAddr()
{
return __WiiDRC_I2CBuf;
}
const struct WiiDRCData *WiiDRC_Data()
{
return &__WiiDRC_PadData;
}
u32 WiiDRC_ButtonsUp()
{
return __WiiDRC_PadButtons.up;
}
u32 WiiDRC_ButtonsDown()
{
return __WiiDRC_PadButtons.down;
}
u32 WiiDRC_ButtonsHeld()
{
return __WiiDRC_PadButtons.state;
}
s16 WiiDRC_lStickX()
{
return __WiiDRC_PadData.xAxisL;
}
s16 WiiDRC_lStickY()
{
return __WiiDRC_PadData.yAxisL;
}
s16 WiiDRC_rStickX()
{
return __WiiDRC_PadData.xAxisR;
}
s16 WiiDRC_rStickY()
{
return __WiiDRC_PadData.yAxisR;
}
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