nxtOSEK/lejos_nxj/src/java/classes/lejos/nxt/LCD.java

   1 package lejos.nxt;\r
   2 \r
   3 /**\r
   4  * \r
   5  * @author Andre Nijholt\r
   6  */\r
   7 public class LCD {\r
   8         public static final int SCREEN_SCALE    = 4;\r
   9         public static final int SCREEN_WIDTH    = 100;\r
  10         public static final int SCREEN_HEIGHT   = 64;\r
  11         \r
  12         public static final int DISPLAY_WIDTH   = 100;\r
  13         public static final int DISPLAY_DEPTH   = 8;    // 8 * 8 bits = 64 pixels\r
  14         \r
  15         public static final int NOOF_CHARS              = 128;\r
  16         public static final int FONT_WIDTH              = 5;\r
  17         public static final int CELL_WIDTH              = FONT_WIDTH + 1;\r
  18         \r
  19         public static final int DISPLAY_CHAR_WIDTH = DISPLAY_WIDTH / CELL_WIDTH;\r
  20         public static final int DISPLAY_CHAR_DEPTH = DISPLAY_DEPTH;\r
  21 \r
  22         private static final byte font[][] = {\r
  23                 /* 0x00 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  24                 /* 0x01 */ {0x3E, 0x55, 0x61, 0x55, 0x3E},\r
  25                 /* 0x02 */ {0x3E, 0x6B, 0x5F, 0x6B, 0x3E},\r
  26                 /* 0x03 */ {0x0C, 0x1E, 0x3C, 0x1E, 0x0C},\r
  27                 /* 0x04 */ {0x08, 0x1C, 0x3E, 0x1C, 0x08},\r
  28                 /* 0x05 */ {0x08, 0x7c, 0x0e, 0x7c, 0x08}, /* SHIFT char */\r
  29                 /* 0x06 */ {0x18, 0x5C, 0x7E, 0x5C, 0x18},\r
  30                 /* 0x07 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  31                 /* 0x08 */ {0x08, 0x1c, 0x3e, 0x08, 0x08}, /* BACKSPACE char */\r
  32                 /* 0x09 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  33                 /* 0x0A */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  34                 /* 0x0B */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  35                 /* 0x0C */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  36                 /* 0x0D */ {0x10, 0x38, 0x7c, 0x10, 0x1e}, /* ENTER char */\r
  37                 /* 0x0E */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  38                 /* 0x0F */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  39                 /* 0x10 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  40                 /* 0x11 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  41                 /* 0x12 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  42                 /* 0x13 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  43                 /* 0x14 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  44                 /* 0x15 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  45                 /* 0x16 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  46                 /* 0x17 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  47                 /* 0x18 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  48                 /* 0x19 */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  49                 /* 0x1A */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  50                 /* 0x1B */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  51                 /* 0x1C */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  52                 /* 0x1D */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  53                 /* 0x1E */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  54                 /* 0x1F */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
  55                 /* 0x20 */ {0x00, 0x00, 0x00, 0x00, 0x00},\r
  56                 /* 0x21 */ {0x00, 0x00, 0x5F, 0x00, 0x00},\r
  57                 /* 0x22 */ {0x00, 0x07, 0x00, 0x07, 0x00},\r
  58                 /* 0x23 */ {0x14, 0x3E, 0x14, 0x3E, 0x14},\r
  59                 /* 0x24 */ {0x04, 0x2A, 0x7F, 0x2A, 0x10},\r
  60                 /* 0x25 */ {0x26, 0x16, 0x08, 0x34, 0x32},\r
  61                 /* 0x26 */ {0x36, 0x49, 0x59, 0x26, 0x50},\r
  62                 /* 0x27 */ {0x00, 0x00, 0x07, 0x00, 0x00},\r
  63                 /* 0x28 */ {0x00, 0x1C, 0x22, 0x41, 0x00},\r
  64                 /* 0x29 */ {0x00, 0x41, 0x22, 0x1C, 0x00},\r
  65                 /* 0x2A */ {0x2A, 0x1C, 0x7F, 0x1C, 0x2A},\r
  66                 /* 0x2B */ {0x08, 0x08, 0x3E, 0x08, 0x08},\r
  67                 /* 0x2C */ {0x00, 0x50, 0x30, 0x00, 0x00},\r
  68                 /* 0x2D */ {0x08, 0x08, 0x08, 0x08, 0x08},\r
  69                 /* 0x2E */ {0x00, 0x60, 0x60, 0x00, 0x00},\r
  70                 /* 0x2F */ {0x20, 0x10, 0x08, 0x04, 0x02},\r
  71                 /* 0x30 */ {0x3E, 0x51, 0x49, 0x45, 0x3E},\r
  72                 /* 0x31 */ {0x00, 0x42, 0x7F, 0x40, 0x00},\r
  73                 /* 0x32 */ {0x42, 0x61, 0x51, 0x49, 0x46},\r
  74                 /* 0x33 */ {0x21, 0x41, 0x45, 0x4B, 0x31},\r
  75                 /* 0x34 */ {0x18, 0x14, 0x12, 0x7F, 0x10},\r
  76                 /* 0x35 */ {0x27, 0x45, 0x45, 0x45, 0x39},\r
  77                 /* 0x36 */ {0x3C, 0x4A, 0x49, 0x49, 0x30},\r
  78                 /* 0x37 */ {0x01, 0x01, 0x79, 0x05, 0x03},\r
  79                 /* 0x38 */ {0x36, 0x49, 0x49, 0x49, 0x36},\r
  80                 /* 0x39 */ {0x06, 0x49, 0x49, 0x29, 0x1E},\r
  81                 /* 0x3A */ {0x00, 0x36, 0x36, 0x00, 0x00},\r
  82                 /* 0x3B */ {0x00, 0x56, 0x36, 0x00, 0x00},\r
  83                 /* 0x3C */ {0x08, 0x14, 0x22, 0x41, 0x00},\r
  84                 /* 0x3D */ {0x14, 0x14, 0x14, 0x14, 0x14},\r
  85                 /* 0x3E */ {0x41, 0x22, 0x14, 0x08, 0x00},\r
  86                 /* 0x3F */ {0x02, 0x01, 0x59, 0x05, 0x02},\r
  87                 /* 0x40 */ {0x1C, 0x2A, 0x36, 0x3E, 0x0C},\r
  88                 /* 0x41 */ {0x7E, 0x09, 0x09, 0x09, 0x7E},\r
  89                 /* 0x42 */ {0x7F, 0x49, 0x49, 0x49, 0x3E},\r
  90                 /* 0x43 */ {0x3E, 0x41, 0x41, 0x41, 0x22},\r
  91                 /* 0x44 */ {0x7F, 0x41, 0x41, 0x22, 0x1C},\r
  92                 /* 0x45 */ {0x7F, 0x49, 0x49, 0x49, 0x41},\r
  93                 /* 0x46 */ {0x7F, 0x09, 0x09, 0x09, 0x01},\r
  94                 /* 0x47 */ {0x3E, 0x41, 0x41, 0x49, 0x3A},\r
  95                 /* 0x48 */ {0x7F, 0x08, 0x08, 0x08, 0x7F},\r
  96                 /* 0x49 */ {0x00, 0x41, 0x7F, 0x41, 0x00},\r
  97                 /* 0x4A */ {0x20, 0x40, 0x41, 0x3F, 0x01},\r
  98                 /* 0x4B */ {0x7F, 0x08, 0x14, 0x22, 0x41},\r
  99                 /* 0x4C */ {0x7F, 0x40, 0x40, 0x40, 0x40},\r
 100                 /* 0x4D */ {0x7F, 0x02, 0x04, 0x02, 0x7F},\r
 101                 /* 0x4E */ {0x7F, 0x04, 0x08, 0x10, 0x7F},\r
 102                 /* 0x4F */ {0x3E, 0x41, 0x41, 0x41, 0x3E},\r
 103                 /* 0x50 */ {0x7F, 0x09, 0x09, 0x09, 0x06},\r
 104                 /* 0x51 */ {0x3E, 0x41, 0x51, 0x21, 0x5E},\r
 105                 /* 0x52 */ {0x7F, 0x09, 0x19, 0x29, 0x46},\r
 106                 /* 0x53 */ {0x26, 0x49, 0x49, 0x49, 0x32},\r
 107                 /* 0x54 */ {0x01, 0x01, 0x7F, 0x01, 0x01},\r
 108                 /* 0x55 */ {0x3F, 0x40, 0x40, 0x40, 0x3F},\r
 109                 /* 0x56 */ {0x1F, 0x20, 0x40, 0x20, 0x1F},\r
 110                 /* 0x57 */ {0x7F, 0x20, 0x18, 0x20, 0x7F},\r
 111                 /* 0x58 */ {0x63, 0x14, 0x08, 0x14, 0x63},\r
 112                 /* 0x59 */ {0x03, 0x04, 0x78, 0x04, 0x03},\r
 113                 /* 0x5A */ {0x61, 0x51, 0x49, 0x45, 0x43},\r
 114                 /* 0x5B */ {0x00, 0x7F, 0x41, 0x41, 0x00},\r
 115                 /* 0x5C */ {0x02, 0x04, 0x08, 0x10, 0x20},\r
 116                 /* 0x5D */ {0x00, 0x41, 0x41, 0x7F, 0x00},\r
 117                 /* 0x5E */ {0x04, 0x02, 0x01, 0x02, 0x04},\r
 118                 /* 0x5F */ {0x40, 0x40, 0x40, 0x40, 0x40},\r
 119                 /* 0x60 */ {0x00, 0x00, 0x07, 0x00, 0x00},\r
 120                 /* 0x61 */ {0x20, 0x54, 0x54, 0x54, 0x78},\r
 121                 /* 0x62 */ {0x7f, 0x48, 0x44, 0x44, 0x38},\r
 122                 /* 0x63 */ {0x30, 0x48, 0x48, 0x48, 0x20},\r
 123                 /* 0x64 */ {0x38, 0x44, 0x44, 0x48, 0x7f},\r
 124                 /* 0x65 */ {0x38, 0x54, 0x54, 0x54, 0x18},\r
 125                 /* 0x66 */ {0x08, 0x7e, 0x09, 0x09, 0x02},\r
 126                 /* 0x67 */ {0x0c, 0x52, 0x52, 0x52, 0x3e},\r
 127                 /* 0x68 */ {0x7f, 0x08, 0x04, 0x04, 0x78},\r
 128                 /* 0x69 */ {0x00, 0x44, 0x7d, 0x40, 0x00},\r
 129                 /* 0x6A */ {0x20, 0x40, 0x40, 0x3d, 0x00},\r
 130                 /* 0x6B */ {0x7f, 0x10, 0x28, 0x44, 0x00},\r
 131                 /* 0x6C */ {0x00, 0x41, 0x7f, 0x40, 0x00},\r
 132                 /* 0x6D */ {0x7c, 0x04, 0x18, 0x04, 0x78},\r
 133                 /* 0x6E */ {0x7c, 0x08, 0x04, 0x04, 0x78},\r
 134                 /* 0x6F */ {0x38, 0x44, 0x44, 0x44, 0x38},\r
 135                 /* 0x70 */ {(byte) 0xfc, 0x14, 0x14, 0x14, 0x08},\r
 136                 /* 0x71 */ {0x08, 0x14, 0x14, 0x18, 0x7c},\r
 137                 /* 0x72 */ {0x7c, 0x08, 0x04, 0x04, 0x08},\r
 138                 /* 0x73 */ {0x48, 0x54, 0x54, 0x54, 0x20},\r
 139                 /* 0x74 */ {0x04, 0x3f, 0x44, 0x40, 0x20},\r
 140                 /* 0x75 */ {0x3c, 0x40, 0x40, 0x20, 0x7c},\r
 141                 /* 0x76 */ {0x1c, 0x20, 0x40, 0x20, 0x1c},\r
 142                 /* 0x77 */ {0x3c, 0x40, 0x38, 0x40, 0x3c},\r
 143                 /* 0x78 */ {0x44, 0x28, 0x10, 0x28, 0x44},\r
 144                 /* 0x79 */ {0x0c, 0x50, 0x50, 0x50, 0x3c},\r
 145                 /* 0x7A */ {0x44, 0x64, 0x54, 0x4c, 0x44},\r
 146                 /* 0x7B */ {0x00, 0x08, 0x36, 0x41, 0x00},\r
 147                 /* 0x7C */ {0x00, 0x00, 0x7F, 0x00, 0x00},\r
 148                 /* 0x7D */ {0x00, 0x41, 0x36, 0x08, 0x00},\r
 149                 /* 0x7E */ {0x00, 0x07, 0x00, 0x07, 0x00},\r
 150                 /* 0x7F */ {0x3E, 0x36, 0x2A, 0x36, 0x3E},\r
 151         };\r
 152 \r
 153         private static int [] displayBuf = new int[200];\r
 154 \r
 155         public static void setPixel(int rgbColor, int x, int y) {\r
 156                 if (x < 0 || x >= SCREEN_WIDTH || y < 0 || y >= SCREEN_HEIGHT) return; // Test-Modify for speed\r
 157                 int xChar = x / 4;\r
 158                 int yChar = y / 8;\r
 159                 int index = yChar * 25 + xChar;\r
 160                 int specificBit = (y % 8) + ((x % 4) * 8);\r
 161                 displayBuf[index] = displayBuf[index] | (rgbColor << specificBit);\r
 162         }\r
 163 \r
 164         public static void drawString(String str, int x, int y, boolean invert) {\r
 165                 char [] strData = str.toCharArray();\r
 166                 for (int i = 0; (i < strData.length) && (x < DISPLAY_CHAR_WIDTH) \r
 167                                 && (y < DISPLAY_CHAR_DEPTH); i++) {\r
 168                         drawChar(strData[i], (x + i) * CELL_WIDTH, y, invert);\r
 169                 }\r
 170         }\r
 171 \r
 172         public static void drawChar(char c, int x, int y, boolean invert) {\r
 173                 for (int i = 0; i <= FONT_WIDTH; i++) {\r
 174                         int xChar = (x + i) / 4;\r
 175                         int index = y * 25 + xChar;\r
 176                         \r
 177                         if (i < FONT_WIDTH) {\r
 178                                 // Clear buffer before writing chars\r
 179                                 displayBuf[index] &= ~(0xFF << (((x + i) % 4) * 8));\r
 180                                 displayBuf[index] |= ((invert ? (font[c][i] ^0xFF) : font[c][i]) << (((x + i) % 4) * 8));\r
 181                         } else if (invert) {\r
 182                                 displayBuf[index] &= ~(0xFF << (((x + i) % 4) * 8));\r
 183                                 displayBuf[index] |= (0xFF << (((x + i) % 4) * 8));\r
 184                         }\r
 185                 }\r
 186         }\r
 187         \r
 188         public static void drawPixels(byte b, int x, int y, boolean invert) {\r
 189                 int index = ((y / 8) * 25) + (x / 4);\r
 190                 displayBuf[index] |= (((invert ? (b ^ 0xFF) : b) & 0xFF) << ((x % 4) * 8));\r
 191         }\r
 192 \r
 193         public static void clearDisplay() {\r
 194                 for (int i = 0; i < displayBuf.length; i++) {\r
 195                         displayBuf[i] = 0;\r
 196                 }\r
 197                 clear();\r
 198         }\r
 199         \r
 200         public static void setDisplay() {\r
 201                 setDisplay(displayBuf);\r
 202         }\r
 203 \r
 204         /**\r
 205          * Display a string on the LCD at specified x,y co-ordinate.\r
 206          */\r
 207         public static native void drawString(String str, int x, int y);\r
 208 \r
 209         /**\r
 210          * Display an int on the LCD at specified x,y co-ordinate.\r
 211          */\r
 212         public static native void drawInt(int i, int x, int y);\r
 213 \r
 214         /**\r
 215          * Display an in on the LCD at x,y with leading spaces to occupy at least the number\r
 216          * of characters specified by the places parameter.\r
 217          */\r
 218         public static native void drawInt(int i, int places, int x, int y);\r
 219 \r
 220         /**\r
 221          * Update the display.\r
 222          */\r
 223         public static native void refresh();\r
 224           \r
 225         /**\r
 226          * Clear the display.\r
 227          */\r
 228         public static native void clear();\r
 229           \r
 230         /**\r
 231          * Write graphics from a Java buffer to the display.\r
 232          */\r
 233         public static native void setDisplay(int[] buff);\r
 234 }\r