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annotate packages/hal/arm/cl7211/current/misc/lcd_support.c @ 36:e97d78785e2d ecos-sw-1999-09-12

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Merge from eCos master repository on 1999-09-12-15:40:34-BST
author jlarmour
date Sun, 12 Sep 1999 15:26:05 +0000
parents
children e7ba79f6d3a8
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1 //==========================================================================
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2 //
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3 // lcd_support.c
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4 //
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5 // Cirrus CL72xx eval board LCD support code
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Cygnus eCos Public License
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12 // Version 1.0 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://sourceware.cygnus.com/ecos
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released
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22 // September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Cygnus. Portions created
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25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
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26 // -------------------------------------------
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27 //
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28 //####COPYRIGHTEND####
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29 //==========================================================================
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30 //#####DESCRIPTIONBEGIN####
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31 //
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32 // Author(s): gthomas
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33 // Contributors: gthomas
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34 // Date: 1999-09-01
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35 // Description: Functions to drive LCD display
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36 //####DESCRIPTIONEND####
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37
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38 // 8x8 Font - from Helios
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39
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40 #define FIRST_CHAR 0x20
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41 #define LAST_CHAR 0x7E
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42 #define FONT_HEIGHT 8
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43 #define FONT_WIDTH 8
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44 static char font_table[LAST_CHAR-FIRST_CHAR+1][8] =
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45 {
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46 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* */
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47 { 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x18, 0x00 }, /* ! */
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48 { 0x36, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* " */
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49 { 0x6C, 0x6C, 0xFE, 0x6C, 0xFE, 0x6C, 0x6C, 0x00 }, /* # */
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50 { 0x30, 0xFC, 0x16, 0x7C, 0xD0, 0x7E, 0x18, 0x00 }, /* $ */
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51 { 0x06, 0x66, 0x30, 0x18, 0x0C, 0x66, 0x60, 0x00 }, /* % */
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52 { 0x1C, 0x36, 0x36, 0x1C, 0xB6, 0x66, 0xDC, 0x00 }, /* & */
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53 { 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* ' */
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54 { 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x18, 0x30, 0x00 }, /* ( */
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55 { 0x0C, 0x18, 0x30, 0x30, 0x30, 0x18, 0x0C, 0x00 }, /* ) */
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56 { 0x00, 0x18, 0x7E, 0x3C, 0x7E, 0x18, 0x00, 0x00 }, /* * */
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57 { 0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00 }, /* + */
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58 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x0C }, /* , */
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59 { 0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00 }, /* - */
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60 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00 }, /* . */
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61 { 0x00, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x00, 0x00 }, /* / */
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62 { 0x3C, 0x66, 0x76, 0x7E, 0x6E, 0x66, 0x3C, 0x00 }, /* 0 */
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63 { 0x18, 0x1C, 0x18, 0x18, 0x18, 0x18, 0x7E, 0x00 }, /* 1 */
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64 { 0x3C, 0x66, 0x60, 0x30, 0x18, 0x0C, 0x7E, 0x00 }, /* 2 */
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65 { 0x3C, 0x66, 0x60, 0x38, 0x60, 0x66, 0x3C, 0x00 }, /* 3 */
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66 { 0x30, 0x38, 0x3C, 0x36, 0x7E, 0x30, 0x30, 0x00 }, /* 4 */
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67 { 0x7E, 0x06, 0x3E, 0x60, 0x60, 0x66, 0x3C, 0x00 }, /* 5 */
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68 { 0x38, 0x0C, 0x06, 0x3E, 0x66, 0x66, 0x3C, 0x00 }, /* 6 */
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69 { 0x7E, 0x60, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00 }, /* 7 */
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70 { 0x3C, 0x66, 0x66, 0x3C, 0x66, 0x66, 0x3C, 0x00 }, /* 8 */
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71 { 0x3C, 0x66, 0x66, 0x7C, 0x60, 0x30, 0x1C, 0x00 }, /* 9 */
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72 { 0x00, 0x00, 0x18, 0x18, 0x00, 0x18, 0x18, 0x00 }, /* : */
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73 { 0x00, 0x00, 0x18, 0x18, 0x00, 0x18, 0x18, 0x0C }, /* ; */
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74 { 0x30, 0x18, 0x0C, 0x06, 0x0C, 0x18, 0x30, 0x00 }, /* < */
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75 { 0x00, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00, 0x00 }, /* = */
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76 { 0x0C, 0x18, 0x30, 0x60, 0x30, 0x18, 0x0C, 0x00 }, /* > */
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77 { 0x3C, 0x66, 0x30, 0x18, 0x18, 0x00, 0x18, 0x00 }, /* ? */
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78 { 0x3C, 0x66, 0x76, 0x56, 0x76, 0x06, 0x3C, 0x00 }, /* @ */
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79 { 0x3C, 0x66, 0x66, 0x7E, 0x66, 0x66, 0x66, 0x00 }, /* A */
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80 { 0x3E, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3E, 0x00 }, /* B */
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81 { 0x3C, 0x66, 0x06, 0x06, 0x06, 0x66, 0x3C, 0x00 }, /* C */
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82 { 0x1E, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1E, 0x00 }, /* D */
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83 { 0x7E, 0x06, 0x06, 0x3E, 0x06, 0x06, 0x7E, 0x00 }, /* E */
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84 { 0x7E, 0x06, 0x06, 0x3E, 0x06, 0x06, 0x06, 0x00 }, /* F */
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85 { 0x3C, 0x66, 0x06, 0x76, 0x66, 0x66, 0x3C, 0x00 }, /* G */
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86 { 0x66, 0x66, 0x66, 0x7E, 0x66, 0x66, 0x66, 0x00 }, /* H */
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87 { 0x7E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7E, 0x00 }, /* I */
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88 { 0x7C, 0x30, 0x30, 0x30, 0x30, 0x36, 0x1C, 0x00 }, /* J */
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89 { 0x66, 0x36, 0x1E, 0x0E, 0x1E, 0x36, 0x66, 0x00 }, /* K */
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90 { 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x7E, 0x00 }, /* L */
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91 { 0xC6, 0xEE, 0xFE, 0xD6, 0xD6, 0xC6, 0xC6, 0x00 }, /* M */
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92 { 0x66, 0x66, 0x6E, 0x7E, 0x76, 0x66, 0x66, 0x00 }, /* N */
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93 { 0x3C, 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x00 }, /* O */
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94 { 0x3E, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x06, 0x00 }, /* P */
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95 { 0x3C, 0x66, 0x66, 0x66, 0x56, 0x36, 0x6C, 0x00 }, /* Q */
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96 { 0x3E, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x66, 0x00 }, /* R */
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97 { 0x3C, 0x66, 0x06, 0x3C, 0x60, 0x66, 0x3C, 0x00 }, /* S */
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98 { 0x7E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00 }, /* T */
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99 { 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x00 }, /* U */
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100 { 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x00 }, /* V */
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101 { 0xC6, 0xC6, 0xD6, 0xD6, 0xFE, 0xEE, 0xC6, 0x00 }, /* W */
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102 { 0x66, 0x66, 0x3C, 0x18, 0x3C, 0x66, 0x66, 0x00 }, /* X */
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103 { 0x66, 0x66, 0x66, 0x3C, 0x18, 0x18, 0x18, 0x00 }, /* Y */
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104 { 0x7E, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x7E, 0x00 }, /* Z */
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105 { 0x3E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x3E, 0x00 }, /* [ */
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106 { 0x00, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x00, 0x00 }, /* \ */
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107 { 0x7C, 0x60, 0x60, 0x60, 0x60, 0x60, 0x7C, 0x00 }, /* ] */
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108 { 0x3C, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* ^ */
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109 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF }, /* _ */
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110 { 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* ` */
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111 { 0x00, 0x00, 0x3C, 0x60, 0x7C, 0x66, 0x7C, 0x00 }, /* a */
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112 { 0x06, 0x06, 0x3E, 0x66, 0x66, 0x66, 0x3E, 0x00 }, /* b */
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113 { 0x00, 0x00, 0x3C, 0x66, 0x06, 0x66, 0x3C, 0x00 }, /* c */
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114 { 0x60, 0x60, 0x7C, 0x66, 0x66, 0x66, 0x7C, 0x00 }, /* d */
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115 { 0x00, 0x00, 0x3C, 0x66, 0x7E, 0x06, 0x3C, 0x00 }, /* e */
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116 { 0x38, 0x0C, 0x0C, 0x3E, 0x0C, 0x0C, 0x0C, 0x00 }, /* f */
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117 { 0x00, 0x00, 0x7C, 0x66, 0x66, 0x7C, 0x60, 0x3C }, /* g */
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118 { 0x06, 0x06, 0x3E, 0x66, 0x66, 0x66, 0x66, 0x00 }, /* h */
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119 { 0x18, 0x00, 0x1C, 0x18, 0x18, 0x18, 0x3C, 0x00 }, /* i */
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120 { 0x18, 0x00, 0x1C, 0x18, 0x18, 0x18, 0x18, 0x0E }, /* j */
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121 { 0x06, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x00 }, /* k */
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122 { 0x1C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00 }, /* l */
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123 { 0x00, 0x00, 0x6C, 0xFE, 0xD6, 0xD6, 0xC6, 0x00 }, /* m */
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124 { 0x00, 0x00, 0x3E, 0x66, 0x66, 0x66, 0x66, 0x00 }, /* n */
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125 { 0x00, 0x00, 0x3C, 0x66, 0x66, 0x66, 0x3C, 0x00 }, /* o */
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126 { 0x00, 0x00, 0x3E, 0x66, 0x66, 0x3E, 0x06, 0x06 }, /* p */
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127 { 0x00, 0x00, 0x7C, 0x66, 0x66, 0x7C, 0x60, 0xE0 }, /* q */
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128 { 0x00, 0x00, 0x36, 0x6E, 0x06, 0x06, 0x06, 0x00 }, /* r */
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129 { 0x00, 0x00, 0x7C, 0x06, 0x3C, 0x60, 0x3E, 0x00 }, /* s */
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130 { 0x0C, 0x0C, 0x3E, 0x0C, 0x0C, 0x0C, 0x38, 0x00 }, /* t */
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131 { 0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x00 }, /* u */
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132 { 0x00, 0x00, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x00 }, /* v */
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133 { 0x00, 0x00, 0xC6, 0xD6, 0xD6, 0xFE, 0x6C, 0x00 }, /* w */
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134 { 0x00, 0x00, 0x66, 0x3C, 0x18, 0x3C, 0x66, 0x00 }, /* x */
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135 { 0x00, 0x00, 0x66, 0x66, 0x66, 0x7C, 0x60, 0x3C }, /* y */
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136 { 0x00, 0x00, 0x7E, 0x30, 0x18, 0x0C, 0x7E, 0x00 }, /* z */
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137 { 0x30, 0x18, 0x18, 0x0E, 0x18, 0x18, 0x30, 0x00 }, /* { */
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138 { 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00 }, /* | */
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139 { 0x0C, 0x18, 0x18, 0x70, 0x18, 0x18, 0x0C, 0x00 }, /* } */
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140 { 0x8C, 0xD6, 0x62, 0x00, 0x00, 0x00, 0x00, 0x00 } /* ~ */
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141 };
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142
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143 #define ALPS_LH
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144 #ifdef ALPS_LH
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145 #define LCD_WIDTH 640
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146 #define LCD_HEIGHT 240
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147 #else
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148 #define LCD_WIDTH 320
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149 #define LCD_HEIGHT 240
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150 #endif
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151 // This can be 1 or 2
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152 #define SCREEN_SCALE 2
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153 #define NIBBLES_PER_PIXEL (1*SCREEN_SCALE)
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154 #define PIXELS_PER_BYTE (2/NIBBLES_PER_PIXEL)
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155 #define PIXEL_MASK ((1<<PIXELS_PER_BYTE)-1)
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156
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157 // Physical screen info
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158 int lcd_depth; // Should be 1, 2, or 4
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159 int lcd_width = LCD_WIDTH;
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160 int lcd_height = LCD_HEIGHT;
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161 cyg_uint8 *lcd_base = (cyg_uint8 *)0xC0000000;
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162
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163 // Virtual screen info
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164 int curX = 0; // Last used position
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165 int curY = 0;
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166 int width = LCD_WIDTH / (FONT_WIDTH*NIBBLES_PER_PIXEL);
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167 int height = LCD_HEIGHT / (FONT_HEIGHT*SCREEN_SCALE);
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168 int fg = 0x0F;
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169 int bg = 0x00;
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170
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171 // Functions
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172
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173 void
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174 lcd_on(int depth)
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175 {
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176 cyg_int32 ctl_word = 0;
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177 lcd_depth = depth;
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178 switch (depth) {
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179 case 1:
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180 *(volatile cyg_int32 *)PALLSW = 0xF0F0F0F0;
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181 *(volatile cyg_int32 *)PALMSW = 0xF0F0F0F0;
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182 ctl_word = 0;
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183 break;
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184 case 2:
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185 *(volatile cyg_int32 *)PALLSW = 0xFA50FA50;
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186 *(volatile cyg_int32 *)PALMSW = 0xFA50FA50;
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187 ctl_word = LCDCON_GSEN;
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188 break;
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189 case 4:
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190 *(volatile cyg_int32 *)PALLSW = 0x76543210;
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191 *(volatile cyg_int32 *)PALMSW = 0xFEDCBA98;
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192 ctl_word = LCDCON_GSEN | LCDCON_GSMD;
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193 break;
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194 }
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195 // Video buffer size
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196 ctl_word |= ((lcd_width * lcd_height * lcd_depth) / 128 - 1) << LCDCON_BUFSIZ_S;
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197 // Line length
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198 ctl_word |= ((lcd_width / 16) - 1) << LCDCON_LINE_LENGTH_S;
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199 // Pixel prescale
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200 ctl_word |= ((526628 / (lcd_height * lcd_width)) - 1) << LCDCON_PIX_PRESCALE_S;
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201 // AC frequency bias
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202 ctl_word |= 0 << LCDCON_AC_PRESCALE_S;
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203 *(volatile cyg_int32 *)LCDCON = ctl_word;
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204 diag_printf("Depth: %d, ctl: %x\n", depth, ctl_word);
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205
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206 #ifdef ALPS_LH
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207 #define LCD_DCDC 0x02
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208 #define LCD_ENABLE 0x04
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209 #define LCD_BACKLIGHT 0x08
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210 #define LCD_INIT (LCD_DCDC|LCD_ENABLE|LCD_BACKLIGHT)
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211 *(volatile cyg_uint8 *)PDDDR = 0x40; // 1's are inputs (backwards from A/B/E)
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212 *(volatile cyg_uint8 *)PDDR = LCD_INIT; // Enable video + backlight + DC-DC converter
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213 #else
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214 #ifdef _CL7111
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215 *(volatile cyg_uint8 *)PDDR = 0x20; // Enable video
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216 *(volatile cyg_uint8 *)PEDDR = 0x0F; // Register E data direction
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217 *(volatile cyg_uint8 *)PEDR |= 0x01; // Enable PE2
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218
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219 *(volatile cyg_uint32 *)PMPCON = 0x500; // Enable DC-to-DC pump #1
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220 #endif
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221 #endif
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222
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223 *(volatile cyg_uint8 *)FRBADDR = 0x0C; // Highest order nibble of LCD frame address
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224
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225 *(volatile cyg_uint32 *)SYSCON1 |= SYSCON1_LCDEN;
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226 }
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227
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228 // Clear screen
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229 static void
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230 lcd_clear(void)
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231 {
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232 cyg_int8 *ptr = lcd_base;
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233 int i;
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234 for (i = 0; i < (lcd_width*lcd_height*lcd_depth)/8; i++) {
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235 *ptr++ = 0;
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236 }
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237 curX = 0; curY = 0;
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238 }
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239
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240 // Render a character at position (X,Y) with current background/foreground
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241 static void
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242 lcd_drawc(cyg_int8 c, int x, int y)
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243 {
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244 // Note: this only works for fonts which are a multiple of 8 bits wide!
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245 cyg_uint8 *bufptr, bits;
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246 int l, p, w;
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247 switch (lcd_depth) {
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248 case 1:
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249 bufptr = lcd_base + ((y * FONT_HEIGHT * (lcd_width*lcd_depth)) + (x * FONT_WIDTH)) / 8;
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250 for (l = 0; l < FONT_HEIGHT; l++) {
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251 *bufptr = font_table[c][l];
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252 bufptr += (lcd_width*lcd_depth)/8;
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253 }
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254 break;
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255 case 2:
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256 diag_printf("Depth 2 not implemented\n");
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257 break;
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258 case 4:
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259 bufptr = lcd_base + ((y * (FONT_HEIGHT*SCREEN_SCALE) * (lcd_width*lcd_depth))
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260 + (x * (FONT_WIDTH*SCREEN_SCALE) * lcd_depth)) / 8;
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261 for (l = 0; l < FONT_HEIGHT; l++) {
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262 for (w = 0; w < SCREEN_SCALE; w++) {
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263 bits = font_table[c-FIRST_CHAR][l];
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264 for (p = 0; p < 8; p += PIXELS_PER_BYTE) {
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265 switch (bits & PIXEL_MASK) {
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266 case 0:
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267 *bufptr++ = (bg << 4) | bg;
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268 break;
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269 case 1:
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270 #if SCREEN_SCALE == 1
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271 *bufptr++ = (bg << 4) | fg;
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272 #else
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273 *bufptr++ = (fg << 4) | fg;
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274 #endif
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275 break;
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276 #if SCREEN_SCALE == 1
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277 case 2:
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278 *bufptr++ = (fg << 4) | bg;
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279 break;
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280 case 3:
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281 *bufptr++ = (fg << 4) | fg;
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282 break;
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283 #endif
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284 }
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285 bits >>= PIXELS_PER_BYTE;
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286 }
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287 bufptr += (lcd_width*lcd_depth)/8 - (8/PIXELS_PER_BYTE);
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288 }
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289 }
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290 break;
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291 }
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292 }
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293
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294 static void
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295 lcd_putc(cyg_int8 c)
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296 {
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297 switch (c) {
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298 case '\r':
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299 curX = 0;
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300 break;
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301 case '\n':
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302 curY++;
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303 break;
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304 case '\b':
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305 curX--;
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306 if (curX < 0) {
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307 curY--;
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308 if (curY < 0) curY = 0;
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309 curX = width-1;
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310 }
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311 default:
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312 lcd_drawc(c, curX, curY);
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313 curX++;
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314 if (curX == width) {
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315 curY++;
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316 curX = 0;
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317 }
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318 }
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319 }
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320