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 * Converted to a mbed library by Andrew D. Lindsay
00009 *
00010 * This file is part of N3310LCD.
00011 *
00012 * N3310LCD is free software: you can redistribute it and/or modify
00013 * it under the terms of the GNU General Public License as published by
00014 * the Free Software Foundation, either version 3 of the License, or
00015 * (at your option) any later version.
00016 *
00017 * N3310LCD is distributed in the hope that it will be useful,
00018 * but WITHOUT ANY WARRANTY; without even the implied warranty of
00019 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00020 * GNU General Public License for more details.
00021 *
00022 * You should have received a copy of the GNU General Public License
00023 * along with N3310LCD.  If not, see <http://www.gnu.org/licenses/>.
00024 */
00025 
00026 #ifndef SNATCH59_JOYSTICK_H
00027 #define SNATCH59_JOYSTICK_H
00028 
00029 #define NUM_KEYS    5
00030 
00031 enum eJoystickKey {LEFT_KEY, CENTER_KEY, DOWN_KEY, UP_KEY, RIGHT_KEY};
00032 
00033 class Joystick
00034 {
00035 public:
00036     Joystick(PinName jstick);
00037 
00038     int getKeyState(int i);
00039     void resetKeyState(int i);
00040     void updateADCKey();        // call this to initiate joystick read
00041 
00042 private:
00043     // data
00044     int buttonCount[NUM_KEYS];    // debounce counters
00045     int buttonStatus[NUM_KEYS];   // button status - pressed/released
00046     int buttonFlag[NUM_KEYS];     // button on flags for user program
00047 
00048     static const int adcKeyVal[NUM_KEYS];
00049 
00050     // I/O
00051     AnalogIn    joystick;
00052 
00053     // functions
00054     int getKey(int input);
00055 };
00056 
00057 #endif