Diff: Joystick.cpp

Revision:

1:740d0a3999a9

Parent:

0:36fb749b83c7

--- a/Joystick.cpp	Mon Dec 07 17:24:52 2009 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,126 +0,0 @@
-/*
-* N3310LCD. A program to interface mbed with the nuelectronics
-* Nokia 3310 LCD shield from www.nuelectronics.com. Ported from
-* the nuelectronics Arduino code.
-*
-* Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk>
-*
-* This file is part of N3310LCD.
-*
-* N3310LCD 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.
-* 
-* N3310LCD 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 N3310LCD.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <mbed.h>
-#include "Joystick.h"
-
-//keypad debounce parameter
-#define DEBOUNCE_MAX 15
-#define DEBOUNCE_ON  10
-#define DEBOUNCE_OFF 3
-
-// values correspond to use of a 3.3V supply for the LCD shield.
-const int Joystick::adcKeyVal[NUM_KEYS] = {50,     // LEFT
-                                           200,    // CENTER DEPRESSED
-                                           400,    // DOWN 
-                                           600,    // UP
-                                           800     // RIGHT
-                                           // 1024 CENTER NOT DEPRESSED
-                                           };
-                                           
-Joystick::Joystick(PinName jstick) : joystick(jstick)
-{
-    // reset button arrays
-    for (int i = 0; i < NUM_KEYS; i++)
-    {
-        buttonCount[i] = 0;
-        buttonStatus[i] = 0;
-        buttonFlag[i] = 0;
-    }
-}
-
-int Joystick::getKeyState(int i)
-{
-    int retval = 0;
-    
-    if (i < NUM_KEYS)
-    {
-        retval = buttonFlag[i];
-    }
-    
-    return retval;
-}
-
-void Joystick::resetKeyState(int i)
-{
-    if (i < NUM_KEYS)
-    {
-        buttonFlag[i] = 0;
-    }
-}
-
-void Joystick::updateADCKey()
-{
-    // NOTE: the mbed analog in is 0 - 3.3V, represented as 0.0 - 1.0. It is important 
-    // that the LCD shield is powered from a 3.3V supply in order for the 'right' joystick
-    // key to function correctly.
-    
-    int adcKeyIn = joystick * 1024;    // scale this up so we can use int
-    int keyIn = getKey(adcKeyIn);
-    
-    for (int i = 0; i < NUM_KEYS; i++)
-    {
-        if (keyIn == i)  //one key is pressed 
-        { 
-            if (buttonCount[i] < DEBOUNCE_MAX)
-            {
-                buttonCount[i]++;
-                if (buttonCount[i] > DEBOUNCE_ON)
-                {
-                    if (buttonStatus[i] == 0)
-                    {
-                        buttonFlag[i] = 1;
-                        buttonStatus[i] = 1; //button debounced to 'pressed' status
-                    }
-                }
-            }
-        }
-        else // no button pressed
-        {
-            if (buttonCount[i] > 0)
-            {  
-                buttonFlag[i] = 0;    
-                buttonCount[i]--;
-                if (buttonCount[i] < DEBOUNCE_OFF)
-                {
-                    buttonStatus[i] = 0;   //button debounced to 'released' status
-                }
-            }
-        }
-    }
-}
-  
-// Convert ADC value to key number
-int Joystick::getKey(int input)
-{
-    int k;
-    
-    for (k = 0; k < NUM_KEYS; k++)
-    {
-        if (input < adcKeyVal[k]) return k;
-    }
-    
-    if (k >= NUM_KEYS) k = -1;     // No valid key pressed
-    
-    return k;
-}