dolphin/Externals/WiiUseSrc/Src/wiiboard.c

188 lines
4.3 KiB
C

/*
* wiiuse
*
* Written By:
* Michael Laforest < para >
* Email: < thepara (--AT--) g m a i l [--DOT--] com >
*
* Copyright 2006-2007
*
* This file is part of wiiuse.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* $Header$
*
*/
/**
* @file
* @brief Wii Fit Balance Board device.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#ifdef WIN32
#include <Winsock2.h>
#endif
#include "definitions.h"
#include "wiiuse_internal.h"
#include "dynamics.h"
#include "events.h"
#include "wiiboard.h"
static short big_to_lil(unsigned short num)
{
short ret = num;
char *bret = (char*)&ret;
char tmp = bret[1];
bret[1] = bret[0];
bret[0] = tmp;
return ret;
}
/**
* @brief Handle the handshake data from the guitar.
*
* @param cc A pointer to a classic_ctrl_t structure.
* @param data The data read in from the device.
* @param len The length of the data block, in bytes.
*
* @return Returns 1 if handshake was successful, 0 if not.
*/
int wii_board_handshake(struct wiimote_t* wm, struct wii_board_t* wb, byte* data, unsigned short len) {
int i;
short* handshake_short;
/* decrypt data */
printf("DECRYPTED DATA WIIBOARD\n");
for (i = 0; i < len; i++)
{
if(i%16==0)
{
if(i!=0)
printf("\n");
printf("%X: ",0x4a40000+32+i);
}
printf("%02X ", data[i]);
}
printf("\n");
handshake_short = (short*)data;
wb->ctr[0] = big_to_lil(handshake_short[2]);
wb->cbr[0] = big_to_lil(handshake_short[3]);
wb->ctl[0] = big_to_lil(handshake_short[4]);
wb->cbl[0] = big_to_lil(handshake_short[5]);
wb->ctr[1] = big_to_lil(handshake_short[6]);
wb->cbr[1] = big_to_lil(handshake_short[7]);
wb->ctl[1] = big_to_lil(handshake_short[8]);
wb->cbl[1] = big_to_lil(handshake_short[9]);
wb->ctr[2] = big_to_lil(handshake_short[10]);
wb->cbr[2] = big_to_lil(handshake_short[11]);
wb->ctl[2] = big_to_lil(handshake_short[12]);
wb->cbl[2] = big_to_lil(handshake_short[13]);
/* handshake done */
wm->exp.type = EXP_WII_BOARD;
#ifdef WIN32
wm->timeout = WIIMOTE_DEFAULT_TIMEOUT;
#endif
return 1;
}
/**
* @brief The wii board disconnected.
*
* @param cc A pointer to a wii_board_t structure.
*/
void wii_board_disconnected(struct wii_board_t* wb) {
memset(wb, 0, sizeof(struct wii_board_t));
}
/**
* @brief Handle guitar event.
*
* @param cc A pointer to a classic_ctrl_t structure.
* @param msg The message specified in the event packet.
*/
void wii_board_event(struct wii_board_t* wb, byte* msg) {
short *shmsg = (short*)(msg);
wb->rtr = big_to_lil(shmsg[0]);
if(wb->rtr<0) wb->rtr = 0;
wb->rbr = big_to_lil(shmsg[1]);
if(wb->rbr<0) wb->rbr = 0;
wb->rtl = big_to_lil(shmsg[2]);
if(wb->rtl<0) wb->rtl = 0;
wb->rbl = big_to_lil(shmsg[3]);
if(wb->rbl<0) wb->rbl = 0;
/*
Interpolate values
Calculations borrowed from wiili.org - No names to mention sadly :( http://www.wiili.org/index.php/Wii_Balance_Board_PC_Drivers page however!
*/
if(wb->rtr<wb->ctr[1])
{
wb->tr = 68*(wb->rtr-wb->ctr[0])/(wb->ctr[1]-wb->ctr[0]);
}
else if(wb->rtr >= wb->ctr[1])
{
wb->tr = 68*(wb->rtr-wb->ctr[1])/(wb->ctr[2]-wb->ctr[1]) + 68;
}
if(wb->rtl<wb->ctl[1])
{
wb->tl = 68*(wb->rtl-wb->ctl[0])/(wb->ctl[1]-wb->ctl[0]);
}
else if(wb->rtl >= wb->ctl[1])
{
wb->tl = 68*(wb->rtl-wb->ctl[1])/(wb->ctl[2]-wb->ctl[1]) + 68;
}
if(wb->rbr<wb->cbr[1])
{
wb->br = 68*(wb->rbr-wb->cbr[0])/(wb->cbr[1]-wb->cbr[0]);
}
else if(wb->rbr >= wb->cbr[1])
{
wb->br = 68*(wb->rbr-wb->cbr[1])/(wb->cbr[2]-wb->cbr[1]) + 68;
}
if(wb->rbl<wb->cbl[1])
{
wb->bl = 68*(wb->rbl-wb->cbl[0])/(wb->cbl[1]-wb->cbl[0]);
}
else if(wb->rbl >= wb->cbl[1])
{
wb->bl = 68*(wb->rbl-wb->cbl[1])/(wb->cbl[2]-wb->cbl[1]) + 68;
}
}
void wiiuse_set_wii_board_calib(struct wiimote_t *wm)
{
}