Revision 4:2bb5deb83b81, committed 2016-11-04

Comitter:

gmiles3

Date:

Fri Nov 04 13:45:06 2016 +0000

Parent:

3:c133402c77cb

Commit message:

Initial commit for angry balls game

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/4DGL-uLCD-SE.lib	Fri Nov 04 13:45:06 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/4180_1/code/4DGL-uLCD-SE/#2cb1845d7681

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h	Fri Nov 04 13:45:06 2016 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+// a new class to play a note on Speaker based on PwmOut class
+class Speaker
+{
+public:
+    Speaker(PinName pin) : _pin(pin) {
+// _pin(pin) means pass pin to the Speaker Constructor
+    }
+// class method to play a note based on PwmOut class
+    void PlayNote(float frequency, float duration, float volume) {
+        _pin.period(1.0/frequency);
+        _pin = volume/2.0;
+        wait(duration);
+        _pin = 0.0;
+    }
+
+private:
+    PwmOut _pin;
+};
\ No newline at end of file

--- a/main.cpp	Tue Jun 04 15:54:12 2013 +0100
+++ b/main.cpp	Fri Nov 04 13:45:06 2016 +0000
@@ -1,21 +1,422 @@
 #include "mbed.h"
 #include "rtos.h"
+#include <mpr121.h>
+#include "uLCD_4DGL.h"
+#include "Speaker.h"
 
-DigitalOut led(LED1);
+uLCD_4DGL uLCD(p9,p10,p11);
+int curr_x_u, curr_y_u, old_x_u, old_y_u; //user's current and old x,y coordinates
+int curr_x_e, curr_y_e, old_x_e, old_y_e; //enemy's current and old x,y coordinates
+float dx_e, dy_e, fx_e, fy_e; //x,y velocity of enemy and floating point representation of x,y coordinates
+int curr_x_b, curr_y_b, old_x_b, old_y_b; //payload's current and old x,y coordinates
+int curr_x_p, curr_y_p, old_x_p, old_y_p; //portal's current and old x,y coordinates
+Mutex lcd_mutex;
+
+Thread box; //handles user-payload collision logic
+Thread portal; //handles portal logic
+
+Speaker amp(p21);
+
+Serial pc(USBTX, USBRX); //debugging
+
+InterruptIn interrupt(p26);
+I2C i2c(p28, p27);
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
+
+int score = 0;
+int oldscore = 0;
+
+volatile int key = -1; //key pressed from keypad; set via interrupts -> volatile so compiler doesn't optimize out value reads
+
+enum State { START, LIVE, PAUSE, DEAD }; //game status
+volatile State s = START;
+
+//interrupt method that runs when keypad has a new value
+void fallInterrupt() {
+    int key_code=0;
+    int i=0;
+    int value=mpr121.read(0x00);
+    value +=mpr121.read(0x01)<<8;
+    i=0;
+    for (i=0; i<12; i++) {
+        if (((value>>i)&0x01)==1) key_code=i+1;
+    }
+    key = key_code;
+}
+
+//handles portal logic
+void portal_thread() {
+    while(s == LIVE || s == PAUSE) {
+        while(s == PAUSE);
+        //if payload and portal collide, score a point and randomize portal location
+        if (((curr_x_p-3 <= curr_x_b+3 && curr_x_p >= curr_x_b) || (curr_x_p+3 >= curr_x_b-3 && curr_x_p <= curr_x_b)) && ((curr_y_p+3 >= curr_y_b-3 && curr_y_p <= curr_y_b) || (curr_y_p-3 <= curr_y_b+3 && curr_y_p >= curr_y_b))) {
+            score++;
+            curr_x_p = (rand() % 106) + 10;
+            curr_y_p = (rand() % 106) + 10;
+        } else if (((curr_y_p-3 <= curr_y_b+3 && curr_y_p >= curr_y_b) || (curr_y_p+3 >= curr_y_b-3 && curr_y_p <= curr_y_b)) && ((curr_x_p+3 >= curr_x_b-3 && curr_x_p <= curr_x_b) || (curr_x_p-3 <= curr_x_b+3 && curr_x_p >= curr_x_b))) {
+            score++;
+            curr_x_p = (rand() % 106) + 10;
+            curr_y_p = (rand() % 106) + 10;
+        }
+        lcd_mutex.lock();
+        //redraw portal and play note if score has changed
+        uLCD.rectangle(curr_x_p-5, curr_y_p-5, curr_x_p+5, curr_y_p+5, BLUE);
+        if (score != oldscore) {
+            amp.PlayNote(1000.0,0.025,0.5);
+            oldscore = score;
+            uLCD.rectangle(old_x_p-5, old_y_p-5, old_x_p+5, old_y_p+5, BLACK);
+            old_x_p = curr_x_p;
+            old_y_p = curr_y_p;
+        }
+        //print score
+        uLCD.locate(1,15);
+        uLCD.color(0xFF00FF);
+        uLCD.printf("%d", score);
+        lcd_mutex.unlock();
+    }
+}
 
-void led_thread(void const *argument) {
-    while (true) {
-        // Signal flags that are reported as event are automatically cleared.
-        Thread::signal_wait(0x1);
-        led = !led;
+//handles user-payload collisions
+void box_thread() {
+    while(s == LIVE) {
+        old_x_u = curr_x_u;
+        old_y_u = curr_y_u;
+        old_x_b = curr_x_b;
+        old_y_b = curr_y_b;
+        //if 3 pressed, then go into pause state
+        if (key==3+1) {
+            s = PAUSE;
+            lcd_mutex.lock();
+            uLCD.locate(1, 2);
+            uLCD.color(0xFFFF00);
+            uLCD.printf("PAUSE");
+            //wait until 3 is unpressed
+            while(key==3+1);
+            //wait until 3 is pressed
+            while(key!=3+1);
+            //wait until 3 is unpressed
+            while(key==3+1);
+            uLCD.locate(1, 2);
+            uLCD.color(BLACK);
+            uLCD.printf("PAUSE");
+            uLCD.color(WHITE);
+            //countdown from 3
+            for (int i=3; i>=1; i--) {
+                uLCD.locate(1, 2);
+                uLCD.printf("%2D", i);
+                amp.PlayNote(800.0,0.025,0.5);
+                wait(1);
+            }
+            uLCD.locate(1,2);
+            uLCD.color(BLACK);
+            uLCD.printf("  ");
+            lcd_mutex.unlock();
+            //play on
+            s = LIVE;
+        }
+        //really complicated collision logic
+        //basically checks each way the boxes could be colliding based on which key is pressed (which direction user is moving)
+        if (key==0+1) {
+
+            if ((curr_x_b+6 > curr_x_u-6 && curr_x_u > curr_x_b) && ((curr_y_u+6 > curr_y_b-6 && curr_y_u <= curr_y_b) || (curr_y_u-6 < curr_y_b+6 && curr_y_u >= curr_y_b))) {
+                curr_x_b-=1;
+                curr_x_u = curr_x_b+12;
+                if (curr_x_b < 7) {
+                    curr_x_b = 25;
+                    curr_y_b = 63;
+                }
+            } else {
+                curr_x_u-=1;
+            }
+            if (curr_x_u < 7) curr_x_u = 7;
+        } else if (key==8+1) {
+
+            if ((curr_x_b-6 < curr_x_u+6 && curr_x_u < curr_x_b) && ((curr_y_u+6 > curr_y_b-6 && curr_y_u <= curr_y_b) || (curr_y_u-6 < curr_y_b+6 && curr_y_u >= curr_y_b))) {
+                curr_x_b+=1;
+                curr_x_u = curr_x_b-12;
+                if (curr_x_b > 120) {
+                    curr_x_b = 25;
+                    curr_y_b = 63;
+                }
+            } else {
+                curr_x_u+=1;
+            }
+            if (curr_x_u > 120) curr_x_u = 120;
+        } else if (key==4+1) {
+
+            if ((curr_y_b-6 < curr_y_u+6 && curr_y_u < curr_y_b) && ((curr_x_u+6 > curr_x_b-6 && curr_x_u <= curr_x_b) || (curr_x_u-6 < curr_x_b+6 && curr_x_u >= curr_x_b))) {
+                curr_y_b+=1;
+                curr_y_u = curr_y_b-12;
+                if (curr_y_b > 120) {
+                    curr_x_b = 25;
+                    curr_y_b = 63;
+                }
+            } else {
+                curr_y_u+=1;
+            }
+            if (curr_y_u > 120) curr_y_u = 120;
+        } else if (key==5+1) {
+
+            if ((curr_y_b+6 > curr_y_u-6 && curr_y_u > curr_y_b) && ((curr_x_u+6 > curr_x_b-6 && curr_x_u <= curr_x_b) || (curr_x_u-6 < curr_x_b+6 && curr_x_u >= curr_x_b))) {
+                curr_y_b-=1;
+                curr_y_u = curr_y_b+12;
+                if (curr_y_b < 7) {
+                    curr_x_b = 25;
+                    curr_y_b = 63;
+                }
+            } else {
+                curr_y_u-=1;
+            }
+            if (curr_y_u < 7) curr_y_u = 7;
+        }
+        //redraw user and payload
+        lcd_mutex.lock();
+        uLCD.rectangle(20, 58, 30, 68, WHITE);
+        uLCD.filled_rectangle(old_x_u-5, old_y_u-5, old_x_u+5, old_y_u+5, BLACK);
+        uLCD.filled_rectangle(curr_x_u-5, curr_y_u-5, curr_x_u+5, curr_y_u+5, GREEN);
+        uLCD.filled_rectangle(old_x_b-5, old_y_b-5, old_x_b+5, old_y_b+5, BLACK);
+        uLCD.filled_rectangle(curr_x_b-5, curr_y_b-5, curr_x_b+5, curr_y_b+5, DGREY);
+        lcd_mutex.unlock();
     }
 }
 
-int main (void) {
-    Thread thread(led_thread);
-    
-    while (true) {
-        Thread::wait(1000);
-        thread.signal_set(0x1);
+//main thread handles setup of game, angry ball collision logic, gameover, and game resets
+int main() {
+    //setup keypad interrupts
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
+    uLCD.baudrate(3000000);
+    //load in Angry Balls image from SD
+    uLCD.media_init();
+    uLCD.set_sector_address(0x003B, 0xD400);
+    uLCD.display_image(0,0);
+    //wait 3 seconds to allow keypad time to set up while player can look at the pretty image
+    wait(3);
+    uLCD.textbackground_color(WHITE);
+    uLCD.text_width(1);
+    uLCD.text_height(1);
+    uLCD.color(RED);
+    uLCD.locate(0, 0);
+    uLCD.printf("Angry Balls!");
+    uLCD.locate(0, 1);
+    uLCD.color(BLACK);
+    uLCD.printf("Press 3 to play");
+    //start tone
+    amp.PlayNote(700.0,0.2,0.5);
+    amp.PlayNote(1000.0,0.2,0.0);
+    amp.PlayNote(600.0,0.1,0.5);
+    amp.PlayNote(1000.0,0.1,0.0);
+    amp.PlayNote(700.0,0.5,0.5);
+    //wait until 3 is pressed
+    while(key != 3+1);
+    //wait until 3 is unpressed
+    while(key == 3+1);
+    //clear screen
+    uLCD.cls();
+    uLCD.textbackground_color(BLACK);
+    uLCD.background_color(BLACK);
+    //setup initial state for every object
+    curr_x_u = 9;
+    curr_y_u = 63;
+    curr_x_b = 25;
+    curr_y_b = 63;
+    curr_x_e = 75;
+    curr_y_e = 75;
+    dx_e = -0.75;
+    dy_e = 0.75;
+    curr_x_p = 110;
+    curr_y_p = 15;
+    old_x_p = curr_x_p;
+    old_y_p = curr_y_p;
+    //draw everything
+    uLCD.filled_rectangle(curr_x_u-5, curr_y_u-5, curr_x_u+5, curr_y_u+5, GREEN);
+    uLCD.filled_rectangle(curr_x_b-5, curr_y_b-5, curr_x_b+5, curr_y_b+5, DGREY);
+    uLCD.filled_circle(curr_x_e, curr_y_e, 6, RED);
+    uLCD.rectangle(curr_x_p-5, curr_y_p-5, curr_x_p+5, curr_y_p+5, BLUE);
+    uLCD.color(WHITE);
+    uLCD.locate(1,2);
+    uLCD.printf("Place ball!");
+    //logic for placing ball before game starts based on key presses; prevents ball from going through walls & middle boundary
+    while(key != 3+1) {
+        old_x_e = curr_x_e;
+        old_y_e = curr_y_e;
+        if (key==0+1) {
+            curr_x_e-=2;
+            if (curr_x_e < 71) curr_x_e = 71;
+        }
+        if (key==8+1) {
+            curr_x_e+=2;
+            if (curr_x_e > 120) curr_x_e = 120;
+        }
+        if (key==4+1) {
+            curr_y_e+=2;
+            if (curr_y_e > 120) curr_y_e = 120;
+        }
+        if (key==5+1) {
+            curr_y_e-=2;
+            if (curr_y_e < 7) curr_y_e = 7;
+        }
+        //draw ball
+        uLCD.locate(1,2);
+        uLCD.printf("Place ball!");
+        uLCD.rectangle(curr_x_p-5, curr_y_p-5, curr_x_p+5, curr_y_p+5, BLUE);
+        uLCD.filled_circle(old_x_e, old_y_e, 6, BLACK);
+        uLCD.filled_circle(curr_x_e, curr_y_e, 6, RED);
+    }
+    //wait until 3 is unpressed
+    while(key==3+1);
+    uLCD.locate(1,2);
+    uLCD.color(BLACK);
+    uLCD.printf("Place ball!");
+    fx_e = curr_x_e;
+    fy_e = curr_y_e;
+    uLCD.color(WHITE);
+    //countdown til start
+    for (int i=3; i>=1; i--) {
+        uLCD.locate(1, 2);
+        uLCD.printf("%2D", i);
+        amp.PlayNote(800.0,0.025,0.5);
+        wait(1);
     }
-}
+    uLCD.locate(1,2);
+    uLCD.color(BLACK);
+    uLCD.printf("  ");
+    //game is live, start other two threads
+    s = LIVE;
+    box.start(box_thread);
+    portal.start(portal_thread);
+    //collision logic for angry ball
+    //check if ball has collided with a wall, the user, or the payload (gameover)
+    while(s == LIVE || s == PAUSE) {
+        while (s==PAUSE);
+        old_x_e = curr_x_e;
+        old_y_e = curr_y_e;
+        if (curr_x_e < 7) {
+            curr_x_e = 7;
+            dx_e = -dx_e;
+        } else if (curr_x_e > 120) {
+            curr_x_e = 120;
+            dx_e = -dx_e;
+        } else if (curr_y_e > 120) {
+            curr_y_e = 120;
+            dy_e = -dy_e;
+        } else if (curr_y_e < 7) {
+            curr_y_e = 7;
+            dy_e = -dy_e;
+        } else if (((dx_e < 0 && curr_x_e-6 < curr_x_u+6 && curr_x_e > curr_x_u) || (dx_e > 0 && curr_x_e+6 > curr_x_u-6 && curr_x_e < curr_x_u)) && ((curr_y_e+6 > curr_y_u-6 && curr_y_e < curr_y_u) || (curr_y_e-6 < curr_y_u+6 && curr_y_e > curr_y_u))) {
+            dx_e = -dx_e;
+        } else if (((dy_e < 0 && curr_y_e-6 < curr_y_u+6 && curr_y_e > curr_y_u) || (dy_e > 0 && curr_y_e+6 > curr_y_u-6 && curr_y_e < curr_y_u)) && ((curr_x_e+6 > curr_x_u-6 && curr_x_e < curr_x_u) || (curr_x_e-6 < curr_x_u+6 && curr_x_e > curr_x_u))) {
+            dy_e = -dy_e;
+        }
+        if (((dx_e < 0 && curr_x_e-6 < curr_x_b+6 && curr_x_e > curr_x_b) || (dx_e > 0 && curr_x_e+6 > curr_x_b-6 && curr_x_e < curr_x_b)) && ((curr_y_e+6 > curr_y_b-6 && curr_y_e < curr_y_b) || (curr_y_e-6 < curr_y_b+6 && curr_y_e > curr_y_b))) {
+            s = DEAD;
+        } else if (((dy_e < 0 && curr_y_e-6 < curr_y_b+6 && curr_y_e > curr_y_b) || (dy_e > 0 && curr_y_e+6 > curr_y_b-6 && curr_y_e < curr_y_b)) && ((curr_x_e+6 > curr_x_b-6 && curr_x_e < curr_x_b) || (curr_x_e-6 < curr_x_b+6 && curr_x_e > curr_x_b))) {
+            s = DEAD;
+        }
+        //update floating point coordinates with velocity values
+        fx_e += dx_e;
+        fy_e += dy_e;
+        //cast floating coordinates to integer coordinates
+        curr_x_e = (int) fx_e;
+        curr_y_e = (int) fy_e;
+        //redraw ball
+        lcd_mutex.lock();
+        uLCD.filled_circle(old_x_e, old_y_e, 6, BLACK);
+        uLCD.filled_circle(curr_x_e, curr_y_e, 6, RED);
+        lcd_mutex.unlock();
+        //if ball-payload collision has occurred, game is now dead
+        if (s == DEAD) {
+            //print gameover, score, instructions to start over, and play gameover sound
+            lcd_mutex.lock();
+            uLCD.cls();
+            uLCD.locate(1,2);
+            uLCD.color(RED);
+            uLCD.printf("GAMEOVER");
+            uLCD.locate(1,4);
+            uLCD.color(0x4B0082);
+            uLCD.printf("Score:%d", score);
+            uLCD.locate(1,8);
+            uLCD.color(WHITE);
+            uLCD.printf("Press 3 to retry");
+            amp.PlayNote(300.0,0.5,0.5);
+            amp.PlayNote(300.0,0.05,0.0);
+            amp.PlayNote(280.0,0.5,0.5);
+            amp.PlayNote(300.0,0.05,0.0);
+            amp.PlayNote(260.0,1.0,0.5);
+            //wait until 3 is pressed
+            while(key != 3+1);
+            //wait until 3 is unpressed
+            while(key == 3+1);
+            //reinitialize game state for new game; same code as above
+            uLCD.cls();
+            score = 0;
+            oldscore = 0;
+            curr_x_u = 9;
+            curr_y_u = 63;
+            curr_x_b = 25;
+            curr_y_b = 63;
+            curr_x_e = 75;
+            curr_y_e = 75;
+            dx_e = -0.75;
+            dy_e = 0.75;
+            curr_x_p = 110;
+            curr_y_p = 15;
+            old_x_p = curr_x_p;
+            old_y_p = curr_y_p;
+            uLCD.filled_rectangle(curr_x_u-5, curr_y_u-5, curr_x_u+5, curr_y_u+5, GREEN);
+            uLCD.filled_rectangle(curr_x_b-5, curr_y_b-5, curr_x_b+5, curr_y_b+5, DGREY);
+            uLCD.filled_circle(curr_x_e, curr_y_e, 6, RED);
+            uLCD.rectangle(curr_x_p-5, curr_y_p-5, curr_x_p+5, curr_y_p+5, BLUE);
+            uLCD.color(WHITE);
+            uLCD.locate(1,2);
+            uLCD.printf("Place ball!");
+            while(key != 3+1) {
+                old_x_e = curr_x_e;
+                old_y_e = curr_y_e;
+                if (key==0+1) {
+                    curr_x_e-=2;
+                    if (curr_x_e < 71) curr_x_e = 71;
+                }
+                if (key==8+1) {
+                    curr_x_e+=2;
+                    if (curr_x_e > 120) curr_x_e = 120;
+                }
+                if (key==4+1) {
+                    curr_y_e+=2;
+                    if (curr_y_e > 120) curr_y_e = 120;
+                }
+                if (key==5+1) {
+                    curr_y_e-=2;
+                    if (curr_y_e < 7) curr_y_e = 7;
+                }
+                uLCD.locate(1,2);
+                uLCD.printf("Place ball!");
+                uLCD.rectangle(curr_x_p-5, curr_y_p-5, curr_x_p+5, curr_y_p+5, BLUE);
+                uLCD.filled_circle(old_x_e, old_y_e, 6, BLACK);
+                uLCD.filled_circle(curr_x_e, curr_y_e, 6, RED);
+            }
+            while(key==3+1);
+            uLCD.locate(1,2);
+            uLCD.color(BLACK);
+            uLCD.printf("Place ball!");
+            fx_e = curr_x_e;
+            fy_e = curr_y_e;
+            uLCD.color(WHITE);
+            for (int i=3; i>=1; i--) {
+                uLCD.locate(1, 2);
+                uLCD.printf("%2D", i);
+                amp.PlayNote(800.0,0.025,0.5);
+                wait(1);
+            }
+            uLCD.locate(1,2);
+            uLCD.color(BLACK);
+            uLCD.printf("  ");
+            lcd_mutex.unlock();
+            //game is live again
+            //restart the other threads
+            s = LIVE;
+            box.start(box_thread);
+            portal.start(portal_thread);
+        }
+    }
+}
\ No newline at end of file

--- a/mbed-rtos.lib	Tue Jun 04 15:54:12 2013 +0100
+++ b/mbed-rtos.lib	Fri Nov 04 13:45:06 2016 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed-rtos/
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed-rtos/#3da5f554d8bf

--- a/mbed.bld	Tue Jun 04 15:54:12 2013 +0100
+++ b/mbed.bld	Fri Nov 04 13:45:06 2016 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed/builds/9bcdf88f62b0
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpr121.cpp	Fri Nov 04 13:45:06 2016 +0000
@@ -0,0 +1,221 @@
+/*
+Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <mbed.h>
+#include <sstream>
+#include <string>
+#include <list>
+
+#include <mpr121.h>
+    
+Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
+{
+    this->i2c = i2c;
+    
+    address = i2cAddress;
+           
+    // Configure the MPR121 settings to default
+    this->configureSettings();
+}
+
+   
+void Mpr121::configureSettings()
+{
+    // Put the MPR into setup mode
+    this->write(ELE_CFG,0x00);
+    
+    // Electrode filters for when data is > baseline
+    unsigned char gtBaseline[] = {
+         0x01,  //MHD_R
+         0x01,  //NHD_R 
+         0x00,  //NCL_R
+         0x00   //FDL_R
+         };
+         
+    writeMany(MHD_R,gtBaseline,4);   
+                 
+     // Electrode filters for when data is < baseline   
+     unsigned char ltBaseline[] = {
+        0x01,   //MHD_F
+        0x01,   //NHD_F
+        0xFF,   //NCL_F
+        0x02    //FDL_F
+        };
+        
+    writeMany(MHD_F,ltBaseline,4);
+        
+    // Electrode touch and release thresholds
+    unsigned char electrodeThresholds[] = {
+        E_THR_T, // Touch Threshhold
+        E_THR_R  // Release Threshold
+        };
+
+    for(int i=0; i<12; i++){
+        int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
+    }   
+
+    // Proximity Settings
+    unsigned char proximitySettings[] = {
+        0xff,   //MHD_Prox_R
+        0xff,   //NHD_Prox_R
+        0x00,   //NCL_Prox_R
+        0x00,   //FDL_Prox_R
+        0x01,   //MHD_Prox_F
+        0x01,   //NHD_Prox_F
+        0xFF,   //NCL_Prox_F
+        0xff,   //FDL_Prox_F
+        0x00,   //NHD_Prox_T
+        0x00,   //NCL_Prox_T
+        0x00    //NFD_Prox_T
+        };
+    writeMany(MHDPROXR,proximitySettings,11);
+
+    unsigned char proxThresh[] = {
+        PROX_THR_T, // Touch Threshold
+        PROX_THR_R  // Release Threshold
+        };
+    writeMany(EPROXTTH,proxThresh,2); 
+       
+    this->write(FIL_CFG,0x04);
+    
+    // Set the electrode config to transition to active mode
+    this->write(ELE_CFG,0x0c);
+}
+
+void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
+    
+    if(electrode > 11) return;
+    
+    // Get the current mode
+    unsigned char mode = this->read(ELE_CFG);
+    
+    // Put the MPR into setup mode
+    this->write(ELE_CFG,0x00);
+    
+    // Write the new threshold
+    this->write((ELE0_T+(electrode*2)), touch);
+    this->write((ELE0_T+(electrode*2)+1), release);
+    
+    //Restore the operating mode
+    this->write(ELE_CFG, mode);
+}
+    
+    
+unsigned char Mpr121::read(int key){
+
+    unsigned char data[2];
+    
+    //Start the command
+    i2c->start();
+
+    // Address the target (Write mode)
+    int ack1= i2c->write(address);
+
+    // Set the register key to read
+    int ack2 = i2c->write(key);
+
+    // Re-start for read of data
+    i2c->start();
+
+    // Re-send the target address in read mode
+    int ack3 = i2c->write(address+1);
+
+    // Read in the result
+    data[0] = i2c->read(0); 
+
+    // Reset the bus        
+    i2c->stop();
+
+    return data[0];
+}
+
+
+int Mpr121::write(int key, unsigned char value){
+    
+    //Start the command
+    i2c->start();
+
+    // Address the target (Write mode)
+    int ack1= i2c->write(address);
+
+    // Set the register key to write
+    int ack2 = i2c->write(key);
+
+    // Read in the result
+    int ack3 = i2c->write(value); 
+
+    // Reset the bus        
+    i2c->stop();
+    
+    return (ack1+ack2+ack3)-3;
+}
+
+
+int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
+    //Start the command
+    i2c->start();
+
+    // Address the target (Write mode)
+    int ack= i2c->write(address);
+    if(ack!=1){
+        return -1;
+    }
+    
+    // Set the register key to write
+    ack = i2c->write(start);
+    if(ack!=1){
+        return -1;
+    }
+
+    // Write the date set
+    int count = 0;
+    while(ack==1 && (count < length)){
+        ack = i2c->write(dataSet[count]);
+        count++;
+    } 
+    // Stop the cmd
+    i2c->stop();
+    
+    return count;
+}
+      
+
+bool Mpr121::getProximityMode(){
+    if(this->read(ELE_CFG) > 0x0c)
+        return true;
+    else
+        return false;
+}
+
+void Mpr121::setProximityMode(bool mode){
+    this->write(ELE_CFG,0x00);
+    if(mode){
+        this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
+    } else {
+        this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
+    }
+}
+
+
+int Mpr121::readTouchData(){
+    return this->read(0x00);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpr121.h	Fri Nov 04 13:45:06 2016 +0000
@@ -0,0 +1,157 @@
+/*
+Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
+
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+   Parts written by Jim Lindblom of Sparkfun
+   Ported to mbed by A.Buckton, Feb 2011
+*/
+
+#ifndef MPR121_H
+#define MPR121_H
+
+//using namespace std;
+
+class Mpr121 
+{
+
+public:
+    // i2c Addresses, bit-shifted
+    enum Address { ADD_VSS = 0xb4,// ADD->VSS = 0x5a <-wiring on Sparkfun board
+                   ADD_VDD = 0xb6,// ADD->VDD = 0x5b
+                   ADD_SCL = 0xb8,// ADD->SDA = 0x5c
+                   ADD_SDA = 0xba // ADD->SCL = 0x5d
+                 };
+
+    // Real initialiser, takes the i2c address of the device.
+    Mpr121(I2C *i2c, Address i2cAddress);
+    
+    bool getProximityMode();
+    
+    void setProximityMode(bool mode);
+    
+    int readTouchData();
+               
+    unsigned char read(int key);
+    
+    int write(int address, unsigned char value);
+    int writeMany(int start, unsigned char* dataSet, int length);
+
+    void setElectrodeThreshold(int electrodeId, unsigned char touchThreshold, unsigned char releaseThreshold);
+        
+protected:
+    // Configures the MPR with standard settings. This is permitted to be overwritten by sub-classes.
+    void configureSettings();
+    
+private:
+    // The I2C bus instance.
+    I2C *i2c;
+
+    // i2c address of this mpr121
+    Address address;
+};
+
+
+// MPR121 Register Defines
+#define    MHD_R        0x2B
+#define    NHD_R        0x2C
+#define    NCL_R        0x2D
+#define    FDL_R        0x2E
+#define    MHD_F        0x2F
+#define    NHD_F        0x30
+#define    NCL_F        0x31
+#define    FDL_F        0x32
+#define    NHDT         0x33
+#define    NCLT         0x34
+#define    FDLT         0x35
+// Proximity sensing controls
+#define    MHDPROXR     0x36
+#define    NHDPROXR     0x37
+#define    NCLPROXR     0x38
+#define    FDLPROXR     0x39
+#define    MHDPROXF     0x3A
+#define    NHDPROXF     0x3B
+#define    NCLPROXF     0x3C
+#define    FDLPROXF     0x3D
+#define    NHDPROXT     0x3E
+#define    NCLPROXT     0x3F
+#define    FDLPROXT     0x40
+// Electrode Touch/Release thresholds
+#define    ELE0_T       0x41
+#define    ELE0_R       0x42
+#define    ELE1_T       0x43
+#define    ELE1_R       0x44
+#define    ELE2_T       0x45
+#define    ELE2_R       0x46
+#define    ELE3_T       0x47
+#define    ELE3_R       0x48
+#define    ELE4_T       0x49
+#define    ELE4_R       0x4A
+#define    ELE5_T       0x4B
+#define    ELE5_R       0x4C
+#define    ELE6_T       0x4D
+#define    ELE6_R       0x4E
+#define    ELE7_T       0x4F
+#define    ELE7_R       0x50
+#define    ELE8_T       0x51
+#define    ELE8_R       0x52
+#define    ELE9_T       0x53
+#define    ELE9_R       0x54
+#define    ELE10_T      0x55
+#define    ELE10_R      0x56
+#define    ELE11_T      0x57
+#define    ELE11_R      0x58
+// Proximity Touch/Release thresholds
+#define    EPROXTTH     0x59
+#define    EPROXRTH     0x5A
+// Debounce configuration
+#define    DEB_CFG      0x5B
+// AFE- Analogue Front End configuration
+#define    AFE_CFG      0x5C 
+// Filter configuration
+#define    FIL_CFG      0x5D
+// Electrode configuration - transistions to "active mode"
+#define    ELE_CFG      0x5E
+
+#define GPIO_CTRL0      0x73
+#define GPIO_CTRL1      0x74
+#define GPIO_DATA       0x75
+#define    GPIO_DIR     0x76
+#define    GPIO_EN      0x77
+#define    GPIO_SET     0x78
+#define GPIO_CLEAR      0x79
+#define GPIO_TOGGLE     0x7A
+// Auto configration registers
+#define    AUTO_CFG_0   0x7B
+#define    AUTO_CFG_U   0x7D
+#define    AUTO_CFG_L   0x7E
+#define    AUTO_CFG_T   0x7F
+
+// Threshold defaults
+// Electrode touch threshold
+#define    E_THR_T      0x0F   
+// Electrode release threshold 
+#define    E_THR_R      0x0A    
+// Prox touch threshold
+#define    PROX_THR_T   0x02
+// Prox release threshold
+#define    PROX_THR_R   0x02
+
+#endif