120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
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/*
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* wiiuse
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*
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* Written By:
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* Michael Laforest < para >
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* Email: < thepara (--AT--) g m a i l [--DOT--] com >
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*
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* Copyright 2006-2007
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*
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* This file is part of wiiuse.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* $Header$
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*
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*/
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/**
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* @file
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* @brief Handles device I/O (non-OS specific).
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "definitions.h"
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#include "wiiuse_internal.h"
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#include "io.h"
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/**
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* @brief Get initialization data from the wiimote.
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*
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* @param wm Pointer to a wiimote_t structure.
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* @param data unused
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* @param len unused
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*
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* When first called for a wiimote_t structure, a request
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* is sent to the wiimote for initialization information.
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* This includes factory set accelerometer data.
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* The handshake will be concluded when the wiimote responds
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* with this data.
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*/
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void wiiuse_handshake(struct wiimote_t* wm, byte* data, unsigned short len) {
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if (!wm) return;
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switch (wm->handshake_state) {
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case 0:
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{
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/* send request to wiimote for accelerometer calibration */
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byte* buf;
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WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_HANDSHAKE);
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wiiuse_set_leds(wm, WIIMOTE_LED_NONE);
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buf = (byte*)malloc(sizeof(byte) * 8);
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wiiuse_read_data_cb(wm, wiiuse_handshake, buf, WM_MEM_OFFSET_CALIBRATION, 7);
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wm->handshake_state++;
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wiiuse_set_leds(wm, WIIMOTE_LED_NONE);
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break;
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}
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case 1:
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{
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struct read_req_t* req = wm->read_req;
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struct accel_t* accel = &wm->accel_calib;
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/* received read data */
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accel->cal_zero.x = req->buf[0];
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accel->cal_zero.y = req->buf[1];
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accel->cal_zero.z = req->buf[2];
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accel->cal_g.x = req->buf[4] - accel->cal_zero.x;
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accel->cal_g.y = req->buf[5] - accel->cal_zero.y;
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accel->cal_g.z = req->buf[6] - accel->cal_zero.z;
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/* done with the buffer */
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free(req->buf);
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/* handshake is done */
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WIIUSE_DEBUG("Handshake finished. Calibration: Idle: X=%x Y=%x Z=%x\t+1g: X=%x Y=%x Z=%x",
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accel->cal_zero.x, accel->cal_zero.y, accel->cal_zero.z,
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accel->cal_g.x, accel->cal_g.y, accel->cal_g.z);
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/* request the status of the wiimote to see if there is an expansion */
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wiiuse_status(wm);
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WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_HANDSHAKE);
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WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_HANDSHAKE_COMPLETE);
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wm->handshake_state++;
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/* now enable IR if it was set before the handshake completed */
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if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_IR)) {
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WIIUSE_DEBUG("Handshake finished, enabling IR.");
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WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_IR);
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wiiuse_set_ir(wm, 1);
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}
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break;
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}
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default:
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{
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break;
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}
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}
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}
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