Revision 0:e33f18af0471, committed 2011-10-13

Comitter:

thejasvi3

Date:

Thu Oct 13 06:17:30 2011 +0000

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NokiaLCD.cpp	Thu Oct 13 06:17:30 2011 +0000
@@ -0,0 +1,458 @@
+/* mbed Nokia LCD Library
+ * Copyright (c) 2007-2010, sford
+ */
+
+#include "NokiaLCD.h"
+
+#include "mbed.h"
+
+#define NOKIALCD_ROWS 16
+#define NOKIALCD_COLS 16
+#define NOKIALCD_WIDTH 130
+#define NOKIALCD_HEIGHT 130
+#define NOKIALCD_FREQUENCY 5000000
+
+NokiaLCD::NokiaLCD(PinName mosi, PinName sclk, PinName cs, PinName rst, LCDType type)
+        : _spi(mosi, NC, sclk)
+        , _rst(rst)
+        , _cs(cs) {
+
+    _type = type;
+
+    _row = 0;
+    _column = 0;
+    _foreground = 0x00FFFFFF;
+    _background = 0x00000000;
+
+    reset();
+}
+
+void NokiaLCD::reset() {
+
+    // setup the SPI interface and bring display out of reset
+    _cs = 1;
+    _rst = 0;
+    _spi.format(9);
+    _spi.frequency(NOKIALCD_FREQUENCY);
+    wait_ms(1);
+    _rst = 1;
+    wait_ms(1);
+
+    _cs = 0;
+
+    switch (_type) {
+        case LCD6100:
+            command(0xCA); // display control
+            data(0);
+            data(32);
+            data(0);
+            command(0xBB);
+            data(1);
+            command(0xD1); // oscillator on
+            command(0x94); // sleep out
+            command(0x20); // power control
+            data(0x0F);
+            command(0xA7); // invert display
+            command(0x81); // Voltage control
+            data(39);      // contrast setting: 0..63
+            data(3);       // resistance ratio
+            wait_ms(1);
+            command(0xBC);
+            data(0);
+            data(1);
+            data(4);
+            command(0xAF);  // turn on the display
+            break;
+            
+        case LCD6610:
+            command(0xCA);    // display control
+            data(0);
+            data(31);
+            data(0);
+            command(0xBB);
+            data(1);
+            command(0xD1); // oscillator on
+            command(0x94); // sleep out
+            command(0x20); // power control
+            data(0x0F);
+            command(0xA7); // invert display
+            command(0x81); // Voltage control
+            data(39);      // contrast setting: 0..63
+            data(3);       // resistance ratio
+            wait_ms(1);
+            command(0xBC);
+            data(0);
+            data(0);
+            data(2);
+            command(0xAF);  // turn on the display
+            break;
+            
+        case PCF8833:
+            command(0x11);  // sleep out
+            command(0x3A);  // column mode
+            data(0x05);
+            command(0x36);  // madctl
+            data(0x60);     // vertical RAM, flip x
+            command(0x25);  // setcon
+            data(0x30);// contrast 0x30
+            wait_ms(2);
+            command(0x29);//DISPON
+            command(0x03);//BSTRON
+            break;
+    }
+
+    _cs = 1;
+
+    cls();
+}
+
+void NokiaLCD::command(int value) {
+    _spi.write(value & 0xFF);
+}
+
+void NokiaLCD::data(int value) {
+    _spi.write(value | 0x100);
+}
+
+void NokiaLCD::_window(int x, int y, int width, int height) {
+    int x1 = x + 0;
+    int y1 = y + 0;
+    int x2 = x1 + width - 1;
+    int y2 = y1 + height - 1;
+
+    switch (_type) {
+        case LCD6100:
+        case LCD6610:
+            command(0x15); // column
+            data(x1);
+            data(x2);
+            command(0x75); // row
+            data(y1);
+            data(y2);
+            command(0x5C); // start write to ram
+            break;
+        case PCF8833:
+            command(0x2A);  // column
+            data(x1);
+            data(x2);
+            command(0x2B); // row
+            data(y1);
+            data(y2);
+            command(0x2C); // start write to ram
+            break;
+    }
+}
+
+void NokiaLCD::_putp(int colour) {
+    int gr = ((colour >> 20) & 0x0F)
+             | ((colour >> 8 ) & 0xF0);
+    int nb = ((colour >> 4 ) & 0x0F);
+    data(nb);
+    data(gr);
+}
+
+const unsigned char FONT8x8[97][8] = {
+    0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
+    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
+    0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
+    0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
+    0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
+    0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
+    0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
+    0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
+    0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
+    0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
+    0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
+    0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
+    0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
+    0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
+    0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
+    0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
+    0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
+    0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
+    0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
+    0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
+    0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
+    0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
+    0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
+    0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
+    0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
+    0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
+    0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
+    0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
+    0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
+    0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
+    0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
+    0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
+    0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
+    0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
+    0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
+    0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
+    0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
+    0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
+    0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
+    0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
+    0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
+    0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
+    0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
+    0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
+    0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
+    0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
+    0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
+    0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
+    0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
+    0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
+    0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
+    0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
+    0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
+    0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
+    0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
+    0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
+    0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
+    0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
+    0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
+    0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
+    0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
+    0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
+    0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
+    0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
+    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
+    0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
+    0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
+    0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
+    0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
+    0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
+    0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
+    0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
+    0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
+    0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
+    0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
+    0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
+    0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
+    0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
+    0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
+    0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
+    0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
+    0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
+    0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
+    0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
+    0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
+    0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
+    0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
+    0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
+    0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
+    0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
+    0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
+    0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
+    0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
+    0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
+    0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
+    0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
+    0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00
+}; // DEL
+
+void NokiaLCD::locate(int column, int row) {
+    _column = column;
+    _row = row;
+}
+
+void NokiaLCD::newline() {
+    _column = 0;
+    _row++;
+    if (_row >= _rows) {
+        _row = 0;
+    }
+}
+
+int NokiaLCD::_putc(int value) {
+    int x = _column * 8;  // FIXME: Char sizes
+    int y = _row * 8;
+    bitblit(x + 1, y + 1, 8, 8, (char*)&(FONT8x8[value - 0x1F][0]));
+
+    _column++;
+
+    if (_column >= NOKIALCD_COLS) {
+        _row++;
+        _column = 0;
+    }
+
+    if (_row >= NOKIALCD_ROWS) {
+        _row = 0;
+    }
+
+    return value;
+}
+
+void NokiaLCD::cls() {
+    fill(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT, _background);
+    _row = 0;
+    _column = 0;
+}
+
+
+void NokiaLCD::window(int x, int y, int width, int height) {
+    _cs = 0;
+    _window(x, y, width, height);
+    _cs = 1;
+}
+
+void NokiaLCD::putp(int colour) {
+    _cs = 0;
+    _putp(colour);
+    _cs = 1;
+}
+
+void NokiaLCD::pixel(int x, int y, int colour) {
+    _cs = 0;
+    _window(x, y, 1, 1);
+     switch (_type) {
+        case LCD6100:
+        case PCF8833:
+           
+                _putp(colour);
+            
+            break;
+        case LCD6610:
+           
+                int r4 = (colour >> (16 + 4)) & 0xF;
+                int g4 = (colour >> (8 + 4)) & 0xF;
+                int b4 = (colour >> (0 + 4)) & 0xF;
+                int d1 = (r4 << 4) | g4;
+                int d2 = (b4 << 4) | r4;
+                int d3 = (g4 << 4) | b4;
+                data(d1); 
+                data(d2);   
+                data(d3);
+            
+            break;
+            }
+    _cs = 1;
+}
+
+void NokiaLCD::fill(int x, int y, int width, int height, int colour) {
+    _cs = 0;
+    _window(x, y, width, height);
+    switch (_type) {
+        case LCD6100:
+        case PCF8833:
+            for (int i=0; i<width*height; i++) {
+                _putp(colour);
+            }
+            break;
+        case LCD6610:
+            for (int i=0; i<width*height/2; i++) {
+                int r4 = (colour >> (16 + 4)) & 0xF;
+    	        int g4 = (colour >> (8 + 4)) & 0xF;
+                int b4 = (colour >> (0 + 4)) & 0xF;
+        	    int d1 = (r4 << 4) | g4;
+                int d2 = (b4 << 4) | r4;
+                int d3 = (g4 << 4) | b4;
+                data(d1); 
+    	        data(d2);   
+    	        data(d3);
+            }
+            break;
+    }
+    _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
+    _cs = 1;
+}
+
+void NokiaLCD::blit(int x, int y, int width, int height, const int* colour) {
+    _cs = 0;
+    _window(x, y, width, height);
+
+    switch (_type) {
+        case LCD6100:
+        case PCF8833:
+            for (int i=0; i<width*height; i++) {
+                 _putp(colour[i]);
+             }
+             break;
+        case LCD6610:
+            for (int i=0; i<width*height/2; i++) {
+        	    int r41 = (colour[i*2] >> (16 + 4)) & 0xF;
+        	    int g41 = (colour[i*2] >> (8 + 4)) & 0xF;
+        	    int b41 = (colour[i*2] >> (0 + 4)) & 0xF;
+    	   
+                int r42 = (colour[i*2+1] >> (16 + 4)) & 0xF;
+        	    int g42 = (colour[i*2+1] >> (8 + 4)) & 0xF;
+        	    int b42 = (colour[i*2+1] >> (0 + 4)) & 0xF;   
+        	    int d1 = (r41 << 4) | g41;
+        	    int d2 = (b41 << 4) | r42;
+        	    int d3 = (g42 << 4) | b42;               
+       	        data(d1); 
+    	        data(d2); 
+    	        data(d3); 
+            }
+            break;
+     }            
+    _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
+    _cs = 1;
+}
+
+void NokiaLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
+    _cs = 0;
+    _window(x, y, width, height);
+
+    switch (_type) {
+        case LCD6100:
+        case PCF8833:
+            for (int i=0; i<height*width; i++) {
+                int byte = i / 8;
+                int bit = i % 8;
+                int colour = ((bitstream[byte] << bit) & 0x80) ? _foreground : _background;
+                _putp(colour);
+            }
+            break;
+        case LCD6610:
+            for(int i=0; i<height*width/2; i++) {
+                int byte1 = (i*2) / 8;
+                int bit1 = (i*2) % 8;   
+        	    int colour1 = ((bitstream[byte1] << bit1) & 0x80) ? _foreground : _background;
+        	    int byte2 = (i*2+1) / 8;
+                int bit2 = (i*2+1) % 8;   
+                int colour2 = ((bitstream[byte2] << bit2) & 0x80) ? _foreground : _background;
+	
+        	    int r41 = (colour1 >> (16 + 4)) & 0xF;
+        	    int g41 = (colour1 >> (8 + 4)) & 0xF;
+        	    int b41 = (colour1 >> (0 + 4)) & 0xF;
+    	   
+                int r42 = (colour2 >> (16 + 4)) & 0xF;
+        	    int g42 = (colour2 >> (8 + 4)) & 0xF;
+        	    int b42 = (colour2 >> (0 + 4)) & 0xF;   
+        	    int d1 = (r41 << 4) | g41;
+        	    int d2 = (b41 << 4) | r42;
+        	    int d3 = (g42 << 4) | b42;               
+       	        data(d1); 
+    	        data(d2); 
+    	        data(d3); 
+            }
+            break;
+     }
+    _window(0, 0, _width, _height);
+    _cs = 1;
+}
+
+void NokiaLCD::foreground(int c) {
+    _foreground = c;
+}
+
+void NokiaLCD::background(int c) {
+    _background = c;
+}
+
+int NokiaLCD::width() {
+    return NOKIALCD_WIDTH;
+}
+
+int NokiaLCD::height() {
+    return NOKIALCD_HEIGHT;
+}
+
+int NokiaLCD::columns() {
+    return NOKIALCD_COLS;
+}
+
+int NokiaLCD::rows() {
+    return NOKIALCD_ROWS;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NokiaLCD.h	Thu Oct 13 06:17:30 2011 +0000
@@ -0,0 +1,151 @@
+/* mbed NokiaLCD Library, for a 130x130 Nokia colour LCD
+ * Copyright (c) 2007-2010, sford
+ *
+ * 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.
+ */
+
+#ifndef MBED_NOKIALCD_H
+#define MBED_NOKIALCD_H
+
+#include "mbed.h"
+
+/** An interface for the 130x130 Nokia Mobile phone screens
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "NokiaLCD.h"
+ *
+ * NokiaLCD lcd(p5, p7, p8, p9, NokiaLCD::6610); // mosi, sclk, cs, rst, type
+ *
+ * int main() {
+ *     lcd.printf("Hello World!");
+ * }
+ * @endcode
+ */
+class NokiaLCD : public Stream {
+
+public:
+    /** LCD panel format */
+    enum LCDType {
+        LCD6100     /**< Nokia 6100, as found on sparkfun board (default) */
+        , LCD6610   /**< Nokia 6610, as found on olimex board */
+        , PCF8833
+    };
+
+    /** Create and Nokia LCD interface, using a SPI and two DigitalOut interfaces
+     *
+     * @param mosi SPI data out
+     * @param sclk SPI clock
+     * @param cs Chip Select (DigitalOut)
+     * @param rst Reset (DigitalOut)
+     * @param type The LCDType to select driver chip variants
+     */
+    NokiaLCD(PinName mosi, PinName sclk, PinName cs, PinName rst, LCDType type = LCD6100);
+
+#if DOXYGEN_ONLY
+    /** Write a character to the LCD
+     *
+     * @param c The character to write to the display
+     */
+    int putc(int c);
+
+    /** Write a formated string to the LCD
+     *
+     * @param format A printf-style format string, followed by the
+     *               variables to use in formating the string.
+     */
+    int printf(const char* format, ...);
+#endif
+
+    /** Locate to a screen column and row
+     *
+     * @param column  The horizontal position from the left, indexed from 0
+     * @param row     The vertical position from the top, indexed from 0
+     */
+    void locate(int column, int row);
+
+    /** Clear the screen and locate to 0,0 */
+    void cls();
+
+    /** Set a pixel on te screen
+     * 
+     * @param x horizontal position from left
+     * @param y vertical position from top
+     * @param colour 24-bit colour in format 0x00RRGGBB
+     */
+    void pixel(int x, int y, int colour);
+    
+    /** Fill an area of the screen
+     * 
+     * @param x horizontal position from left
+     * @param y vertical position from top
+     * @param width width in pixels
+     * @param height height in pixels
+     * @param colour 24-bit colour in format 0x00RRGGBB
+     */    
+    void fill(int x, int y, int width, int height, int colour);
+
+    void blit(int x, int y, int width, int height, const int* colour);
+    void bitblit(int x, int y, int width, int height, const char* bitstream);
+
+    int width();
+    int height();
+    int columns();
+    int rows();
+
+    void reset();
+
+    /** Set the foreground colour
+     * 
+     * @param c 24-bit colour
+     */
+    void foreground(int c);
+
+    /** Set the background colour
+     * 
+     * @param c 24-bit colour
+     */
+    void background(int c);
+
+protected:
+    virtual void _window(int x, int y, int width, int height);
+    virtual void _putp(int colour);
+
+    void command(int value);
+    void data(int value);
+
+    void newline();
+    virtual int _putc(int c);
+    virtual int _getc() {
+        return 0;
+    }
+    void putp(int v);
+    void window(int x, int y, int width, int height);
+
+    SPI _spi;
+    DigitalOut _rst;
+    DigitalOut _cs;
+
+    LCDType _type;
+    int _row, _column, _rows, _columns, _foreground, _background, _width, _height;
+};
+
+#endif
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Oct 13 06:17:30 2011 +0000
@@ -0,0 +1,257 @@
+#include <mbed.h>
+#include <string>
+#include <list>
+
+#include <mpr121.h>
+#include "NokiaLCD.h"
+
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+// Pushbuttons to change the octaves of the touchpads
+InterruptIn octavePlus1(p18);   // Pushbutton that increments the octave of touchpad1
+InterruptIn octaveMinus1(p17);  // Pushbutton that decrements the octave of touchpad1
+InterruptIn octavePlus2(p16);   // Pushbutton that increments the octave of touchpad2
+InterruptIn octaveMinus2(p15);  // Pushbutton that decrements the octave of touchpad2
+
+// Create the interrupt receiver object on pin 26
+InterruptIn interrupt1(p26);    // IRQ of touchpad1
+InterruptIn interrupt2(p8);     // IRQ of touchpad2
+
+// Setup the Serial to the PC for debugging
+Serial pc(USBTX, USBRX);
+
+// Setup the i2c bus on pins 28 and 27
+I2C i2c1(p28, p27);
+I2C i2c2(p9,p10);
+
+
+//Setup NOKIA LCD
+NokiaLCD lcd(p5, p7, p12, p11, NokiaLCD::LCD6610); // mosi, sclk, cs, rst, type
+
+
+// Setup the Mpr121:
+// constructor(i2c object, i2c address of the mpr121)
+Mpr121 mpr121_1(&i2c1, Mpr121::ADD_VSS);
+Mpr121 mpr121_2(&i2c2, Mpr121::ADD_VSS);
+
+Timer t1;   // to calulate delta time
+
+void midiEventGenerator1();
+void midiEventGenerator2();
+
+
+volatile char octave[2] = {0,1};    // Stores the current octave of both the touchpads
+volatile int prev_val[2] = {0,0};   // Stores the previous touchpad values
+volatile int cur_val[2] = {0,0};    // Stores the current touchpad values
+volatile int time_us = 0;           // Stores the time between different events of the same touchpad
+
+
+const int backgroundColor = 0x0000FF;
+const int graphBarColor = 0xFFFFFF;
+const int graphAxesColor = 0xFFFFFF;
+
+int t = 0;
+
+// Key hit/release interrupt routine for touch pad 1
+void fallInterrupt1()
+{
+      time_us = t1.read_us();
+      t1.stop();
+      t1.reset();
+      t1.start();
+      cur_val[0] = mpr121_1.read(0x00);
+      cur_val[0] += mpr121_1.read(0x01)<<8;
+      
+      midiEventGenerator1();      
+}
+
+
+// Key hit/release interrupt routine for touch pad 2
+void fallInterrupt2()
+{
+      time_us = t1.read_us();
+      t1.stop();
+      t1.reset();
+      t1.start();
+      cur_val[1] = mpr121_2.read(0x00);
+      cur_val[1] += mpr121_2.read(0x01)<<8;
+      
+      midiEventGenerator2();
+}
+
+void octaveIncrement1()
+{
+    if(octave[0] < 9)
+        octave[0]++;
+        
+    // Update the octave number on the LCD
+    lcd.fill(48,8,8,8,backgroundColor);
+    lcd.locate(6,1);
+    lcd.printf("%d",octave[0]);
+        
+    wait(0.5);
+}
+
+void octaveIncrement2()
+{
+    if(octave[1] < 9)
+        octave[1]++;
+        
+    lcd.fill(112,8,8,8,backgroundColor);
+    lcd.locate(14,1);
+    lcd.printf("%d",octave[1]);
+        
+    wait(0.5);
+}
+
+void octaveDecrement1()
+{
+    if(octave[0] > 0)
+        octave[0]--;
+        
+    lcd.fill(48,8,8,8,backgroundColor);
+    lcd.locate(6,1);
+    lcd.printf("%d",octave[0]);
+        
+    wait(0.5);        
+}
+
+void octaveDecrement2()
+{
+    if(octave[1] > 0)
+        octave[1]--;
+        
+    lcd.fill(112,8,8,8,backgroundColor);
+    lcd.locate(14,1);
+    lcd.printf("%d",octave[1]);
+        
+    wait(0.5);        
+}
+
+void rx()
+{
+    // reset timer when new file is to be created
+    t1.stop();
+    t1.reset();
+    t1.start();
+    
+    char temp = pc.getc();
+}
+
+int main()
+{
+  // Initialize LCD
+  lcd.background(backgroundColor);
+  lcd.cls();
+  
+  lcd.fill(5,35,55,1,graphAxesColor);
+  lcd.fill(5,35,1,85,graphAxesColor);
+  
+  lcd.fill(65,35,55,1,graphAxesColor);
+  lcd.fill(65,35,1,85,graphAxesColor);
+  
+  lcd.locate(0,1);
+  lcd.printf("Octv: %d",octave[0]);
+  
+  lcd.locate(8,1);
+  lcd.printf("Octv: %d",octave[1]);
+  
+  // Initialize the pushbutton interrupts
+  octavePlus1.mode(PullUp);
+  octavePlus1.fall(&octaveIncrement1);
+  octavePlus2.mode(PullUp);
+  octavePlus2.fall(&octaveIncrement2);
+  octaveMinus1.mode(PullUp);
+  octaveMinus1.fall(&octaveDecrement1);
+  octaveMinus2.mode(PullUp);
+  octaveMinus2.fall(&octaveDecrement2);
+  
+     
+  // for touch pad 1
+  interrupt1.mode(PullUp);
+  interrupt1.fall(&fallInterrupt1);
+  t1.reset();
+  t1.start();
+  
+
+  // for touch pad 2
+  interrupt2.mode(PullUp);
+  interrupt2.fall(&fallInterrupt2);
+
+  // Setup interrupt for serial port rx. This is used to reset the deltatime timer when a new file is created on the PC
+  pc.attach(&rx);
+  
+  int temp = 0;
+  while (1)
+  {
+        temp ^= 1;
+        led1 = temp;;
+        wait(0.5);
+  }
+}
+
+
+void midiEventGenerator1()
+{
+    int temp;
+    
+    // Evaluate for touch pad 1
+    temp = cur_val[0] ^ prev_val[0];
+    
+    for(int i = 0; i < 12; i++)
+    {
+        if((temp & 1) == 1)
+        {
+            int mask = (1 << i);
+            
+            if((cur_val[0] & mask) == mask)
+            {
+                pc.printf("on%01d%03d%010d",0,((octave[0] * 12) + i), time_us); // sending format: channel, note, deltaTime_uS
+                lcd.fill(6,(36 + (7 * i)),50,6,graphBarColor);                  // Display the FFT
+            }
+            else
+            {
+                pc.printf("of%01d%03d%010d",0,((octave[0] * 12) + i), time_us);
+                lcd.fill(6,(36 + (7 * i)),50,6,backgroundColor);
+            }
+        }
+        temp = temp >> 1;
+    }
+    
+    prev_val[0] = cur_val[0];
+
+}
+
+void midiEventGenerator2()
+{
+    int temp;
+    
+    // Evaluate for touch pad 2
+    temp = cur_val[1] ^ prev_val[1];
+    
+    for(int i = 0; i < 12; i++)
+    {
+        if((temp & 1) == 1)
+        {
+            int mask = (1 << i);
+            
+            if((cur_val[1] & mask) == mask)
+            {
+                pc.printf("on%01d%03d%010d",0,((octave[1] * 12) + i), time_us);
+                lcd.fill(66,(36 + (7 * i)),50,6,graphBarColor);
+            }
+            else
+            {
+                pc.printf("of%01d%03d%010d",0,((octave[1] * 12) + i), time_us);
+                lcd.fill(66,(36 + (7 * i)),50,6,backgroundColor);
+            }
+        }
+        temp = temp >> 1;
+    }
+    
+    prev_val[1] = cur_val[1];
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Oct 13 06:17:30 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpr121.cpp	Thu Oct 13 06:17:30 2011 +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	Thu Oct 13 06:17:30 2011 +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