dolphin/Externals/WiiUseSrc/Src/wiiboard.c

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/*
* 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 Wiiboard expansion 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"
/**
* @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 offset = 0;
if (data[offset]==0xff) {
if (data[offset+16]==0xff) {
WIIUSE_DEBUG("Wii Balance Board handshake appears invalid, trying again.");
wiiuse_read_data(wm, data, WM_EXP_MEM_CALIBR, EXP_HANDSHAKE_LEN);
return 0;
}
offset += 16;
}
wb->ctr[0] = (data[offset+4]<<8)|data[offset+5];
wb->cbr[0] = (data[offset+6]<<8)|data[offset+7];
wb->ctl[0] = (data[offset+8]<<8)|data[offset+9];
wb->cbl[0] = (data[offset+10]<<8)|data[offset+11];
wb->ctr[1] = (data[offset+12]<<8)|data[offset+13];
wb->cbr[1] = (data[offset+14]<<8)|data[offset+15];
wb->ctl[1] = (data[offset+16]<<8)|data[offset+17];
wb->cbl[1] = (data[offset+18]<<8)|data[offset+19];
wb->ctr[2] = (data[offset+20]<<8)|data[offset+21];
wb->cbr[2] = (data[offset+22]<<8)|data[offset+23];
wb->ctl[2] = (data[offset+24]<<8)|data[offset+25];
wb->cbl[2] = (data[offset+26]<<8)|data[offset+27];
/* handshake done */
wm->event = WIIUSE_WII_BOARD_CTRL_INSERTED;
wm->exp.type = EXP_WII_BOARD;
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) {
wb->rtr = (msg[0]<<8)|msg[1];
wb->rbr = (msg[2]<<8)|msg[3];
wb->rtl = (msg[4]<<8)|msg[5];
wb->rbl = (msg[6]<<8)|msg[7];
calc_balanceboard_state(wb);
}