Revision 0:21669ea33448, committed 2014-11-10

Comitter:

john_ghielec

Date:

Mon Nov 10 13:04:42 2014 +0000

Child:

1:cd8a3926f263

Commit message:

Initial commit.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DisplayN18.cpp	Mon Nov 10 13:04:42 2014 +0000
@@ -0,0 +1,521 @@
+#include "DisplayN18.h"
+
+DisplayN18::DisplayN18() : resetPin(P0_20), backlightPin(P0_19), rsPin(P0_7), csPin(P0_2), spi(P0_21, P0_22, P1_15)
+{
+    this->resetPin.write(false);
+    this->backlightPin.write(true);
+    this->rsPin.write(false);
+    
+    this->spi.format(8, 3);
+    this->spi.frequency(15000000);
+    
+    this->initialize();
+}
+
+void DisplayN18::writeCommand(unsigned char command)
+{
+    this->rsPin.write(false);
+    
+    this->csPin.write(false);
+    
+    this->spi.write(command);
+    
+    this->csPin.write(true);
+}
+
+void DisplayN18::writeData(unsigned char data)
+{
+    this->writeData(&data, 1);
+}
+
+void DisplayN18::writeData(const unsigned char* data, unsigned int length)
+{
+    this->rsPin.write(true);
+    
+    this->csPin.write(false);
+    
+    for (unsigned int i = 0; i < length; i++)
+        this->spi.write(data[i]);
+    
+    this->csPin.write(true);
+}
+
+void DisplayN18::reset()
+{
+    this->resetPin.write(false);
+    wait_ms(300);
+    
+    this->resetPin.write(true);
+    wait_ms(500);
+}
+
+void DisplayN18::initialize()
+{
+    this->reset();
+
+    this->writeCommand(0x11);
+    
+    wait_ms(120);
+
+    this->writeCommand(0xB1);
+    this->writeData(0x01); this->writeData(0x2C); this->writeData(0x2D);
+    this->writeCommand(0xB2);
+    this->writeData(0x01); this->writeData(0x2C); this->writeData(0x2D);
+    this->writeCommand(0xB3);
+    this->writeData(0x01); this->writeData(0x2C); this->writeData(0x2D);
+    this->writeData(0x01); this->writeData(0x2C); this->writeData(0x2D);
+
+    this->writeCommand(0xB4);
+    this->writeData(0x07);
+
+    this->writeCommand(0xC0);
+    this->writeData(0xA2); this->writeData(0x02); this->writeData(0x84);
+    this->writeCommand(0xC1); this->writeData(0xC5);
+    this->writeCommand(0xC2);
+    this->writeData(0x0A); this->writeData(0x00);
+    this->writeCommand(0xC3);
+    this->writeData(0x8A); this->writeData(0x2A);
+    this->writeCommand(0xC4);
+    this->writeData(0x8A); this->writeData(0xEE);
+
+    this->writeCommand(0xC5);
+    this->writeData(0x0E);
+
+    this->writeCommand(0x36);
+    this->writeData(0xA8);
+
+    this->writeCommand(0xe0);
+    this->writeData(0x0f); this->writeData(0x1a);
+    this->writeData(0x0f); this->writeData(0x18);
+    this->writeData(0x2f); this->writeData(0x28);
+    this->writeData(0x20); this->writeData(0x22);
+    this->writeData(0x1f); this->writeData(0x1b);
+    this->writeData(0x23); this->writeData(0x37); this->writeData(0x00);
+    this->writeData(0x07);
+    this->writeData(0x02); this->writeData(0x10);
+
+    this->writeCommand(0xe1);
+    this->writeData(0x0f); this->writeData(0x1b);
+    this->writeData(0x0f); this->writeData(0x17);
+    this->writeData(0x33); this->writeData(0x2c);
+    this->writeData(0x29); this->writeData(0x2e);
+    this->writeData(0x30); this->writeData(0x30);
+    this->writeData(0x39); this->writeData(0x3f);
+    this->writeData(0x00); this->writeData(0x07);
+    this->writeData(0x03); this->writeData(0x10);
+
+    this->writeCommand(0x2a);
+    this->writeData(0x00); this->writeData(0x00);
+    this->writeData(0x00); this->writeData(0x7f);
+    this->writeCommand(0x2b);
+    this->writeData(0x00); this->writeData(0x00);
+    this->writeData(0x00); this->writeData(0x9f);
+
+    this->writeCommand(0xF0);
+    this->writeData(0x01);
+    this->writeCommand(0xF6);
+    this->writeData(0x00);
+
+    this->writeCommand(0x3A);
+    this->writeData(0x05);
+
+    this->writeCommand(0x29);
+
+    this->clear();
+}
+
+void DisplayN18::setClippingArea(unsigned char x, unsigned char y, unsigned char width, unsigned char height)
+{
+    unsigned char data[4] = { 0x00, 0x00, 0x00, 0x00 };
+
+    data[1] = x;
+    data[3] = x + width;
+    this->writeCommand(0x2A);
+    this->writeData(data, 4);
+
+    data[1] = y;
+    data[3] = y + height;
+    this->writeCommand(0x2B);
+    this->writeData(data, 4);
+}
+
+unsigned short DisplayN18::rgbToShort(unsigned char r, unsigned char g, unsigned char b)
+{
+    unsigned short red = r;
+    unsigned short green = g;
+    unsigned short blue = b;
+
+    red /= 8;
+    green /= 4;
+    blue /= 8;
+
+    red &= 0x1F;
+    green &= 0x3F;
+    blue &= 0x1F;
+
+    red <<= 3;
+    blue <<= 8;
+    green = ((green & 0x7) << 13) + ((green & 0x38) >> 3);
+
+    return red | green | blue;
+}
+
+void DisplayN18::clear(unsigned short backColor)
+{
+    for (unsigned int i = 0; i < DisplayN18::WIDTH; i += 10)
+        for (unsigned int j = 0; j < DisplayN18::HEIGHT; j += 8)
+            this->fillRect(i, j, 10, 8, backColor);
+}
+
+void DisplayN18::draw(const unsigned short* data, int x, int y, int width, int height)
+{
+    this->setClippingArea(x, y, width - 1, height - 1);
+    this->writeCommand(0x2C);
+    this->writeData(reinterpret_cast<const unsigned char*>(data), width * height * 2);
+}
+
+void DisplayN18::setPixel(int x, int y, unsigned short foreColor)
+{
+    this->draw(&foreColor, x, y, 1, 1);
+}
+
+void DisplayN18::fillRect(int x, int y, int width, int height, unsigned short foreColor)
+{
+    this->setClippingArea(static_cast<unsigned char>(x), static_cast<unsigned char>(y), static_cast<unsigned char>(width - 1), static_cast<unsigned char>(height));
+    
+    this->writeCommand(0x2C);
+    
+    unsigned short buffer[50];
+    for (int j = 0; j < sizeof(buffer) / 2; j++)
+        buffer[j] = foreColor;
+
+    this->rsPin.write(true);
+
+    int i;
+    for (i = sizeof(buffer); i < height * width * 2; i += sizeof(buffer))
+        this->writeData(reinterpret_cast<unsigned char*>(buffer), sizeof(buffer));
+    
+    i -= sizeof(buffer);
+    if (i != height * width * 2)
+        this->writeData(reinterpret_cast<unsigned char*>(buffer), height * width * 2 - i);
+}
+
+void DisplayN18::drawRect(int x, int y, int width, int height, unsigned short foreColor)
+{
+    this->drawLine(x, y, x + width, y, foreColor);
+    this->drawLine(x, y + height, x + width, y + height, foreColor);
+    this->drawLine(x, y, x, y + height, foreColor);
+    this->drawLine(x + width, y, x + width, y + height, foreColor);
+}
+
+void DisplayN18::fillCircle(int x, int y, int radius, unsigned short foreColor)
+{
+    int f = 1 - radius;
+    int dd_f_x = 1;
+    int dd_f_y = -2 * radius;
+    int x1 = 0;
+    int y1 = radius;
+
+    for (int i = y - radius; i <= y + radius; i++)
+        this->setPixel(x, i, foreColor);
+
+    while (x1 < y1)
+    {
+        if (f >= 0)
+        {
+            y1--;
+            dd_f_y += 2;
+            f += dd_f_y;
+        }
+
+        x1++;
+        dd_f_x += 2;
+        f += dd_f_x;
+
+        for (int i = y - y1; i <= y + y1; i++)
+        {
+            this->setPixel(x + x1, i, foreColor);
+            this->setPixel(x - x1, i, foreColor);
+        }
+
+        for (int i = y - x1; i <= y + x1; i++)
+        {
+            this->setPixel(x + y1, i, foreColor);
+            this->setPixel(x - y1, i, foreColor);
+        }
+    }
+}
+
+void DisplayN18::drawCircle(int x, int y, int radius, unsigned short foreColor)
+{
+    int f = 1 - radius;
+    int dd_f_x = 1;
+    int dd_f_y = -2 * radius;
+    int x1 = 0;
+    int y1 = radius;
+
+    this->setPixel(x, y + radius, foreColor);
+    this->setPixel(x, y - radius, foreColor);
+    this->setPixel(x + radius, y, foreColor);
+    this->setPixel(x - radius, y, foreColor);
+
+    while (x1 < y1)
+    {
+        if (f >= 0)
+        {
+            y1--;
+            dd_f_y += 2;
+            f += dd_f_y;
+        }
+
+        x1++;
+        dd_f_x += 2;
+        f += dd_f_x;
+
+        this->setPixel(x + x1, y + y1, foreColor);
+        this->setPixel(x - x1, y + y1, foreColor);
+        this->setPixel(x + x1, y - y1, foreColor);
+        this->setPixel(x - x1, y - y1, foreColor);
+
+        this->setPixel(x + y1, y + x1, foreColor);
+        this->setPixel(x - y1, y + x1, foreColor);
+        this->setPixel(x + y1, y - x1, foreColor);
+        this->setPixel(x - y1, y - x1, foreColor);
+    }
+}
+
+void DisplayN18::drawLine(int x0, int y0, int x1, int y1, unsigned short foreColor)
+{
+    if (x0 == x1)
+    {
+        if (y1 < y0)
+        {
+            int temp = y0;
+            y0 = y1;
+            y1 = temp;
+        }
+
+        this->setClippingArea(static_cast<unsigned char>(x0), static_cast<unsigned char>(y0), 0, static_cast<unsigned char>(y1 - y0 - 1));
+        this->writeCommand(0x2C);
+
+        unsigned short data[DisplayN18::STEP];
+        for (int i = 0; i < DisplayN18::STEP; i++)
+            data[i] = foreColor;
+
+        for (unsigned char thisY = y0; thisY < y1; thisY += DisplayN18::STEP)
+            this->writeData(reinterpret_cast<unsigned char*>(data), (thisY + DisplayN18::STEP <= y1 ? DisplayN18::STEP : y1 - thisY) * 2);
+
+        return;
+    }
+
+    if (y0 == y1)
+    {
+        if (x1 < x0)
+        {
+            int temp = x0;
+            x0 = x1;
+            x1 = temp;
+        }
+
+        this->setClippingArea(static_cast<unsigned char>(x0), static_cast<unsigned char>(y0), static_cast<unsigned char>(x1 - x0 - 1), 0);
+        this->writeCommand(0x2C);
+
+        unsigned short data[DisplayN18::STEP];
+        for (int i = 0; i < DisplayN18::STEP; i++)
+            data[i] = foreColor;
+
+        for (unsigned char thisX = x0; thisX < x1; thisX += DisplayN18::STEP)
+            this->writeData(reinterpret_cast<unsigned char*>(data), (thisX + DisplayN18::STEP <= x1 ? DisplayN18::STEP : x1 - thisX) * 2);
+
+        return;
+    }
+
+    int t;
+    bool steep = ((y1 - y0) < 0 ? -(y1 - y0) : (y1 - y0)) > ((x1 - x0) < 0 ? -(x1 - x0) : (x1 - x0));
+
+    if (steep)
+    {
+        t = x0;
+        x0 = y0;
+        y0 = t;
+        t = x1;
+        x1 = y1;
+        y1 = t;
+    }
+
+    if (x0 > x1)
+    {
+        t = x0;
+        x0 = x1;
+        x1 = t;
+
+        t = y0;
+        y0 = y1;
+        y1 = t;
+    }
+
+    int dx, dy;
+    dx = x1 - x0;
+    dy = (y1 - y0) < 0 ? -(y1 - y0) : (y1 - y0);
+
+    int err = (dx / 2);
+    int ystep;
+
+    if (y0 < y1)
+        ystep = 1;
+    else
+        ystep = -1;
+
+    for (; x0 < x1; x0++)
+    {
+        if (steep)
+            this->setPixel(y0, x0, foreColor);
+        else
+            this->setPixel(x0, y0, foreColor);
+
+        err -= dy;
+
+        if (err < 0)
+        {
+            y0 += (char)ystep;
+            err += dx;
+        }
+    }
+}
+
+unsigned char characters[95 * 5] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, /* Space  0x20 */
+    0x00, 0x00, 0x4f, 0x00, 0x00, /* ! */
+    0x00, 0x07, 0x00, 0x07, 0x00, /* " */
+    0x14, 0x7f, 0x14, 0x7f, 0x14, /* # */
+    0x24, 0x2a, 0x7f, 0x2a, 0x12, /* $ */
+    0x23, 0x13, 0x08, 0x64, 0x62, /* % */
+    0x36, 0x49, 0x55, 0x22, 0x20, /* & */
+    0x00, 0x05, 0x03, 0x00, 0x00, /* ' */
+    0x00, 0x1c, 0x22, 0x41, 0x00, /* ( */
+    0x00, 0x41, 0x22, 0x1c, 0x00, /* ) */
+    0x14, 0x08, 0x3e, 0x08, 0x14, /* // */
+    0x08, 0x08, 0x3e, 0x08, 0x08, /* + */
+    0x50, 0x30, 0x00, 0x00, 0x00, /* , */
+    0x08, 0x08, 0x08, 0x08, 0x08, /* - */
+    0x00, 0x60, 0x60, 0x00, 0x00, /* . */
+    0x20, 0x10, 0x08, 0x04, 0x02, /* / */
+    0x3e, 0x51, 0x49, 0x45, 0x3e, /* 0      0x30 */
+    0x00, 0x42, 0x7f, 0x40, 0x00, /* 1 */
+    0x42, 0x61, 0x51, 0x49, 0x46, /* 2 */
+    0x21, 0x41, 0x45, 0x4b, 0x31, /* 3 */
+    0x18, 0x14, 0x12, 0x7f, 0x10, /* 4 */
+    0x27, 0x45, 0x45, 0x45, 0x39, /* 5 */
+    0x3c, 0x4a, 0x49, 0x49, 0x30, /* 6 */
+    0x01, 0x71, 0x09, 0x05, 0x03, /* 7 */
+    0x36, 0x49, 0x49, 0x49, 0x36, /* 8 */
+    0x06, 0x49, 0x49, 0x29, 0x1e, /* 9 */
+    0x00, 0x36, 0x36, 0x00, 0x00, /* : */
+    0x00, 0x56, 0x36, 0x00, 0x00, /* ; */
+    0x08, 0x14, 0x22, 0x41, 0x00, /* < */
+    0x14, 0x14, 0x14, 0x14, 0x14, /* = */
+    0x00, 0x41, 0x22, 0x14, 0x08, /* > */
+    0x02, 0x01, 0x51, 0x09, 0x06, /* ? */
+    0x3e, 0x41, 0x5d, 0x55, 0x1e, /* @      0x40 */
+    0x7e, 0x11, 0x11, 0x11, 0x7e, /* A */
+    0x7f, 0x49, 0x49, 0x49, 0x36, /* B */
+    0x3e, 0x41, 0x41, 0x41, 0x22, /* C */
+    0x7f, 0x41, 0x41, 0x22, 0x1c, /* D */
+    0x7f, 0x49, 0x49, 0x49, 0x41, /* E */
+    0x7f, 0x09, 0x09, 0x09, 0x01, /* F */
+    0x3e, 0x41, 0x49, 0x49, 0x7a, /* G */
+    0x7f, 0x08, 0x08, 0x08, 0x7f, /* H */
+    0x00, 0x41, 0x7f, 0x41, 0x00, /* I */
+    0x20, 0x40, 0x41, 0x3f, 0x01, /* J */
+    0x7f, 0x08, 0x14, 0x22, 0x41, /* K */
+    0x7f, 0x40, 0x40, 0x40, 0x40, /* L */
+    0x7f, 0x02, 0x0c, 0x02, 0x7f, /* M */
+    0x7f, 0x04, 0x08, 0x10, 0x7f, /* N */
+    0x3e, 0x41, 0x41, 0x41, 0x3e, /* O */
+    0x7f, 0x09, 0x09, 0x09, 0x06, /* P      0x50 */
+    0x3e, 0x41, 0x51, 0x21, 0x5e, /* Q */
+    0x7f, 0x09, 0x19, 0x29, 0x46, /* R */
+    0x26, 0x49, 0x49, 0x49, 0x32, /* S */
+    0x01, 0x01, 0x7f, 0x01, 0x01, /* T */
+    0x3f, 0x40, 0x40, 0x40, 0x3f, /* U */
+    0x1f, 0x20, 0x40, 0x20, 0x1f, /* V */
+    0x3f, 0x40, 0x38, 0x40, 0x3f, /* W */
+    0x63, 0x14, 0x08, 0x14, 0x63, /* X */
+    0x07, 0x08, 0x70, 0x08, 0x07, /* Y */
+    0x61, 0x51, 0x49, 0x45, 0x43, /* Z */
+    0x00, 0x7f, 0x41, 0x41, 0x00, /* [ */
+    0x02, 0x04, 0x08, 0x10, 0x20, /* \ */
+    0x00, 0x41, 0x41, 0x7f, 0x00, /* ] */
+    0x04, 0x02, 0x01, 0x02, 0x04, /* ^ */
+    0x40, 0x40, 0x40, 0x40, 0x40, /* _ */
+    0x00, 0x00, 0x03, 0x05, 0x00, /* `      0x60 */
+    0x20, 0x54, 0x54, 0x54, 0x78, /* a */
+    0x7F, 0x44, 0x44, 0x44, 0x38, /* b */
+    0x38, 0x44, 0x44, 0x44, 0x44, /* c */
+    0x38, 0x44, 0x44, 0x44, 0x7f, /* d */
+    0x38, 0x54, 0x54, 0x54, 0x18, /* e */
+    0x04, 0x04, 0x7e, 0x05, 0x05, /* f */
+    0x08, 0x54, 0x54, 0x54, 0x3c, /* g */
+    0x7f, 0x08, 0x04, 0x04, 0x78, /* h */
+    0x00, 0x44, 0x7d, 0x40, 0x00, /* i */
+    0x20, 0x40, 0x44, 0x3d, 0x00, /* j */
+    0x7f, 0x10, 0x28, 0x44, 0x00, /* k */
+    0x00, 0x41, 0x7f, 0x40, 0x00, /* l */
+    0x7c, 0x04, 0x7c, 0x04, 0x78, /* m */
+    0x7c, 0x08, 0x04, 0x04, 0x78, /* n */
+    0x38, 0x44, 0x44, 0x44, 0x38, /* o */
+    0x7c, 0x14, 0x14, 0x14, 0x08, /* p      0x70 */
+    0x08, 0x14, 0x14, 0x14, 0x7c, /* q */
+    0x7c, 0x08, 0x04, 0x04, 0x00, /* r */
+    0x48, 0x54, 0x54, 0x54, 0x24, /* s */
+    0x04, 0x04, 0x3f, 0x44, 0x44, /* t */
+    0x3c, 0x40, 0x40, 0x20, 0x7c, /* u */
+    0x1c, 0x20, 0x40, 0x20, 0x1c, /* v */
+    0x3c, 0x40, 0x30, 0x40, 0x3c, /* w */
+    0x44, 0x28, 0x10, 0x28, 0x44, /* x */
+    0x0c, 0x50, 0x50, 0x50, 0x3c, /* y */
+    0x44, 0x64, 0x54, 0x4c, 0x44, /* z */
+    0x08, 0x36, 0x41, 0x41, 0x00, /* { */
+    0x00, 0x00, 0x77, 0x00, 0x00, /* | */
+    0x00, 0x41, 0x41, 0x36, 0x08, /* } */
+    0x08, 0x08, 0x2a, 0x1c, 0x08  /* ~ */
+};
+
+void DisplayN18::drawCharacter(int x, int y, const char character, unsigned short foreColor, unsigned short backColor, unsigned char fontSize)
+{
+    if (character > 126 || character < 32)
+        return;
+
+    unsigned short* horizontal = new unsigned short[DisplayN18::CHAR_HEIGHT * fontSize];
+    for (int i = 0; i < DisplayN18::CHAR_WIDTH; i++)
+    {
+        for (int j = 0; j < DisplayN18::CHAR_HEIGHT; j++)
+            for (int k = 0; k < fontSize; k++)
+                horizontal[j * fontSize + k] = characters[(character - 32) * 5 + i] & (1 << j) ? foreColor : backColor;
+
+        for (int k = 0; k < fontSize; k++)
+            this->draw(horizontal, x + i * fontSize + k, y, 1, DisplayN18::CHAR_HEIGHT * fontSize);
+    }
+
+    for (int i = 0; i < DisplayN18::CHAR_HEIGHT; i++)
+        for (int k = 0; k < fontSize; k++)
+            horizontal[i * fontSize + k] = backColor;
+
+    for (int k = 0; k < fontSize; k++)
+        this->draw(horizontal, x + DisplayN18::CHAR_WIDTH * fontSize + k, y, 1, DisplayN18::CHAR_HEIGHT * fontSize);
+
+    delete[] horizontal;
+}
+
+void DisplayN18::drawString(int x, int y, const char* str, unsigned short foreColor, unsigned short backColor, unsigned char fontSize)
+{
+    if (*str == '\0')
+        return;
+
+    do
+    {
+        this->drawCharacter(x, y, *str, foreColor, backColor, fontSize);
+        
+        x += (DisplayN18::CHAR_WIDTH + DisplayN18::CHAR_SPACING) * fontSize;
+    } while (*(++str) != '\0');
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DisplayN18.h	Mon Nov 10 13:04:42 2014 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+
+#pragma once
+
+class DisplayN18 
+{
+    static const unsigned char STEP = 4;
+    
+    DigitalOut resetPin;
+    DigitalOut backlightPin;
+    DigitalOut rsPin;
+    DigitalOut csPin;
+    SPI spi;
+
+    void writeCommand(unsigned char command);
+    void writeData(unsigned char data);
+    void writeData(const unsigned char* data, unsigned int length);
+
+    void reset();
+    void initialize();
+    void setClippingArea(unsigned char x, unsigned char y, unsigned char width, unsigned char height);
+
+    public:
+        DisplayN18();
+        
+        static const unsigned short BLUE = 0x00F8;
+        static const unsigned short GREEN = 0xE007;
+        static const unsigned short RED = 0x1F00;
+        static const unsigned short WHITE = 0xFFFF;
+        static const unsigned short BLACK = 0x0000;
+
+        static const unsigned int WIDTH = 160;
+        static const unsigned int HEIGHT = 128;
+        static const unsigned char CHAR_WIDTH = 5;
+        static const unsigned char CHAR_HEIGHT = 8;
+        static const unsigned char CHAR_SPACING = 1;
+
+        static unsigned short rgbToShort(unsigned char r, unsigned char g, unsigned char b);
+
+        void clear(unsigned short backColor = 0x0000);
+        void draw(const unsigned short* data, int x, int y, int width, int height);
+        void setPixel(int x, int y, unsigned short foreColor);
+
+        void fillRect(int x, int y, int width, int height, unsigned short foreColor);
+        void drawRect(int x, int y, int width, int height, unsigned short foreColor);
+
+        void fillCircle(int x, int y, int radius, unsigned short foreColor);
+        void drawCircle(int x, int y, int radius, unsigned short foreColor);
+
+        void drawLine(int x0, int y0, int x1, int y1, unsigned short foreColor);
+
+        void drawCharacter(int x, int y, const char character, unsigned short foreColor, unsigned short backColor, unsigned char fontSize = 1);
+        void drawString(int x, int y, const char* str, unsigned short foreColor, unsigned short backColor, unsigned char fontSize = 1);
+};
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Main.cpp	Mon Nov 10 13:04:42 2014 +0000
@@ -0,0 +1,225 @@
+#include "mbed.h"
+
+#include "DisplayN18.h"
+
+DigitalIn left(P0_14, PullUp);
+DigitalIn right(P0_11, PullUp);
+DigitalIn down(P0_12, PullUp);
+DigitalIn up(P0_13, PullUp);    
+DigitalIn square(P0_16, PullUp);
+DigitalIn circle(P0_1, PullUp);  
+DigitalOut led1(P0_9);
+DigitalOut led2(P0_8);    
+PwmOut pwm(P0_18);
+AnalogIn ain(P0_15);
+I2C i2c(P0_5, P0_4);
+DisplayN18 disp;
+
+int ballX, ballY, ballSpeedX, ballSpeedY, paddleX, pwmTicksLeft, lives;
+
+const char* LOSE_1 = "You lose.";
+const char* LOSE_2 = "Press circle to restart.";
+const char* SPLASH = "Press circle to start.";
+
+const char I2C_ADDR = 0x1C << 1;
+const int BALL_RADIUS = 4;
+const int MIN_BALL_SPEED = 2;
+const int MAX_BALL_SPEED = 4;
+const int PADDLE_WIDTH = 40;
+const int PADDLE_HEIGHT = 5;
+const int PADDLE_SPEED = 5;
+const int BOUNCE_SOUND_TICKS = 2;
+
+void initializeBall() {
+    ballX = DisplayN18::WIDTH / 2 - BALL_RADIUS;
+    ballY = DisplayN18::HEIGHT / 4 - BALL_RADIUS;
+    
+    ballSpeedX = rand() % (MAX_BALL_SPEED - MIN_BALL_SPEED) + MIN_BALL_SPEED;
+    ballSpeedY = rand() % (MAX_BALL_SPEED - MIN_BALL_SPEED) + MIN_BALL_SPEED;
+    
+    if (rand() % 2)
+        ballSpeedX *= -1;
+    
+    if (rand() % 2)
+        ballSpeedY *= -1;
+    
+    if (ballSpeedX == 0)
+        ballSpeedX++;
+    
+    if (ballSpeedY == 0)
+        ballSpeedY++;
+}
+
+void initializeGame() {
+    initializeBall();
+        
+    paddleX = DisplayN18::WIDTH / 2 - PADDLE_WIDTH / 2;
+    pwmTicksLeft = 0;
+    lives = 4;
+    
+    pwm.period_ms(1);
+    pwm.write(0.00);
+    
+    disp.clear();
+}
+
+void drawString(const char* str, int y) {
+    disp.drawString(DisplayN18::WIDTH / 2 - (DisplayN18::CHAR_WIDTH + DisplayN18::CHAR_SPACING) * strlen(str) / 2, y, str, DisplayN18::WHITE, DisplayN18::BLACK);         
+}
+
+void doSplash() {
+    drawString(SPLASH, DisplayN18::HEIGHT / 2 - DisplayN18::CHAR_HEIGHT / 2);  
+       
+    while (circle)
+        wait_ms(1);
+}
+
+void clearPaddle() {
+    disp.fillRect(paddleX, DisplayN18::HEIGHT - PADDLE_HEIGHT, PADDLE_WIDTH, PADDLE_HEIGHT, DisplayN18::BLACK);    
+}
+
+void drawPaddle() {
+    disp.fillRect(paddleX, DisplayN18::HEIGHT - PADDLE_HEIGHT, PADDLE_WIDTH, PADDLE_HEIGHT, DisplayN18::BLUE);    
+}
+
+void updatePaddle() {
+    if (left)
+        paddleX += PADDLE_SPEED;
+        
+    if (right)
+        paddleX -= PADDLE_SPEED;
+}
+
+void clearBall() {   
+    disp.fillRect(ballX - BALL_RADIUS, ballY - BALL_RADIUS, BALL_RADIUS * 2, BALL_RADIUS * 2, DisplayN18::BLACK); 
+}
+
+void drawBall() {
+    disp.fillRect(ballX - BALL_RADIUS, ballY - BALL_RADIUS, BALL_RADIUS * 2, BALL_RADIUS * 2, DisplayN18::RED); 
+}
+
+void updateBall() {
+    ballX += ballSpeedX;
+    ballY += ballSpeedY;
+}
+
+void checkCollision() {    
+    if (paddleX < 0)
+        paddleX = 0;
+        
+    if (paddleX + PADDLE_WIDTH > DisplayN18::WIDTH)
+        paddleX = DisplayN18::WIDTH - PADDLE_WIDTH;
+        
+    if ((ballX - BALL_RADIUS < 0 && ballSpeedX < 0) || (ballX + BALL_RADIUS >= DisplayN18::WIDTH && ballSpeedX > 0))
+        ballSpeedX *= -1;
+        
+    if (ballY - BALL_RADIUS < 0 && ballSpeedY < 0)
+        ballSpeedY *= -1;
+        
+    if (ballY + BALL_RADIUS >= DisplayN18::HEIGHT - PADDLE_HEIGHT && ballSpeedY > 0) {
+        if (ballY + BALL_RADIUS >= DisplayN18::HEIGHT) {
+            initializeBall();
+            
+            lives--;
+        }
+        else if (ballX > paddleX && ballX < paddleX + PADDLE_WIDTH) {
+            ballSpeedY *= -1;
+            
+            pwmTicksLeft = BOUNCE_SOUND_TICKS;                       
+        }
+    }
+}
+
+void checkPwm() {
+    if (pwmTicksLeft == 0) {
+        pwm.write(0.0);
+    }
+    else {
+        pwmTicksLeft--;
+        pwm.write(0.5); 
+    }
+}
+
+void checkLives() {
+    if (lives == 0) {
+        disp.clear();
+        
+        drawString(LOSE_1, DisplayN18::HEIGHT / 2 - DisplayN18::CHAR_HEIGHT); 
+        drawString(LOSE_2, DisplayN18::HEIGHT / 2);  
+        
+        while (circle)
+            wait_ms(1);
+            
+        initializeGame();
+    }
+    else {
+        disp.drawCharacter(0, 0, static_cast<char>(lives + '0'), DisplayN18::WHITE, DisplayN18::BLACK);   
+    }
+}
+
+int read_short(char address) {
+    char buffer[2];
+    
+    i2c.write(I2C_ADDR, &address, 1, true);
+    i2c.read(I2C_ADDR | 1, buffer, 2);
+    
+    return ((buffer[0] << 2) | (buffer[1] >> 6)) & 0x3F;
+}
+
+int write_register(char address, char value) {    
+    char buffer[2] = { address, value };
+    return i2c.write(I2C_ADDR, buffer, 2);
+}
+
+void get_xyz(int& x, int& y, int& z) {
+    x = read_short(0x01);
+    y = read_short(0x03);
+    z = read_short(0x05);
+            
+    if (x > 511) x -= 1024;
+    if (y > 511) y -= 1024;
+    if (z > 511) z -= 1024; 
+}
+
+void print_int(int value, int x, int y) {
+    char buffer[10];
+    int len = sprintf(buffer, "%d", value);
+    
+    disp.drawString(x, y, buffer, DisplayN18::WHITE, DisplayN18::BLACK);
+}
+
+int main() {
+    int x, y, z;
+    
+    write_register(0x2A, 0x01);
+    
+    //srand(ain.read_u16());
+    
+    //doSplash();
+    
+    //initializeGame();
+    
+    while (true) {
+        /*clearPaddle();
+        clearBall();
+        
+        updatePaddle();
+        updateBall();
+    
+        checkCollision();
+        
+        drawPaddle();        
+        drawBall();
+        
+        checkPwm();
+        checkLives();*/
+        
+        get_xyz(x, y, z);
+        
+        print_int(x, 0, 0);
+        print_int(y, 0, 15);
+        print_int(z, 0, 30);
+        
+        wait_ms(100);
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Nov 10 13:04:42 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1
\ No newline at end of file