Joystick.h

00001 /*
00002 * N3310LCD. A program to interface mbed with the nuelectronics
00003 * Nokia 3310 LCD shield from www.nuelectronics.com. Ported from
00004 * the nuelectronics Arduino code.
00005 *
00006 * Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk>
00007 *
00008 * This file is part of N3310LCD.
00009 *
00010 * N3310LCD is free software: you can redistribute it and/or modify
00011 * it under the terms of the GNU General Public License as published by
00012 * the Free Software Foundation, either version 3 of the License, or
00013 * (at your option) any later version.
00014 * 
00015 * N3310LCD is distributed in the hope that it will be useful,
00016 * but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018 * GNU General Public License for more details.
00019 *
00020 * You should have received a copy of the GNU General Public License
00021 * along with N3310LCD.  If not, see <http://www.gnu.org/licenses/>.
00022 */
00023 
00024 #ifndef SNATCH59_JOYSTICK_H
00025 #define SNATCH59_JOYSTICK_H
00026 
00027 #define NUM_KEYS    5
00028 
00029 enum eJoystickKey {LEFT_KEY, CENTER_KEY, DOWN_KEY, UP_KEY, RIGHT_KEY};
00030 
00031 class Joystick
00032 {
00033 public:
00034     Joystick(PinName jstick);
00035     
00036     int getKeyState(int i);
00037     void resetKeyState(int i);
00038     void updateADCKey();        // call this to initiate joystick read
00039     
00040 private:
00041     // data
00042     int buttonCount[NUM_KEYS];    // debounce counters
00043     int buttonStatus[NUM_KEYS];   // button status - pressed/released
00044     int buttonFlag[NUM_KEYS];     // button on flags for user program
00045     
00046     static const int adcKeyVal[NUM_KEYS];
00047     
00048     // I/O
00049     AnalogIn    joystick;
00050     
00051     // functions
00052     int getKey(int input);
00053 };
00054 
00055 #endif