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1 | jermar | 1 | /* |
1843 | jermar | 2 | * Copyright (C) 2006 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1754 | jermar | 29 | /** @addtogroup genarch |
1702 | cejka | 30 | * @{ |
31 | */ |
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1754 | jermar | 32 | /** |
1757 | jermar | 33 | * @file |
1843 | jermar | 34 | * @brief Key processing. |
1702 | cejka | 35 | */ |
36 | |||
1843 | jermar | 37 | #include <genarch/kbd/key.h> |
1842 | jermar | 38 | #include <genarch/kbd/scanc.h> |
39 | #include <genarch/kbd/scanc_pc.h> |
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508 | jermar | 40 | #include <synch/spinlock.h> |
1843 | jermar | 41 | #include <console/chardev.h> |
508 | jermar | 42 | #include <typedefs.h> |
517 | jermar | 43 | #include <macros.h> |
1 | jermar | 44 | |
508 | jermar | 45 | #define PRESSED_SHIFT (1<<0) |
46 | #define PRESSED_CAPSLOCK (1<<1) |
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47 | #define LOCKED_CAPSLOCK (1<<0) |
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48 | |||
894 | jermar | 49 | #define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */ |
878 | vana | 50 | |
1780 | jermar | 51 | static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE]; |
878 | vana | 52 | |
623 | jermar | 53 | SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */ |
508 | jermar | 54 | static volatile int keyflags; /**< Tracking of multiple keypresses. */ |
509 | jermar | 55 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */ |
508 | jermar | 56 | |
57 | /** Process release of key. |
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58 | * |
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59 | * @param sc Scancode of the key being released. |
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60 | */ |
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1780 | jermar | 61 | void key_released(uint8_t sc) |
508 | jermar | 62 | { |
63 | spinlock_lock(&keylock); |
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64 | switch (sc) { |
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65 | case SC_LSHIFT: |
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66 | case SC_RSHIFT: |
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67 | keyflags &= ~PRESSED_SHIFT; |
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68 | break; |
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69 | case SC_CAPSLOCK: |
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70 | keyflags &= ~PRESSED_CAPSLOCK; |
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71 | if (lockflags & LOCKED_CAPSLOCK) |
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72 | lockflags &= ~LOCKED_CAPSLOCK; |
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73 | else |
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74 | lockflags |= LOCKED_CAPSLOCK; |
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75 | break; |
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76 | default: |
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77 | break; |
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78 | } |
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79 | spinlock_unlock(&keylock); |
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80 | } |
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81 | |||
82 | /** Process keypress. |
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83 | * |
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84 | * @param sc Scancode of the key being pressed. |
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85 | */ |
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1780 | jermar | 86 | void key_pressed(uint8_t sc) |
508 | jermar | 87 | { |
88 | char *map = sc_primary_map; |
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89 | char ascii = sc_primary_map[sc]; |
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90 | bool shift, capslock; |
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91 | bool letter = false; |
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92 | |||
93 | spinlock_lock(&keylock); |
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94 | switch (sc) { |
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601 | palkovsky | 95 | case SC_LSHIFT: |
96 | case SC_RSHIFT: |
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508 | jermar | 97 | keyflags |= PRESSED_SHIFT; |
98 | break; |
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601 | palkovsky | 99 | case SC_CAPSLOCK: |
508 | jermar | 100 | keyflags |= PRESSED_CAPSLOCK; |
101 | break; |
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601 | palkovsky | 102 | case SC_SPEC_ESCAPE: |
103 | break; |
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104 | case SC_LEFTARR: |
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105 | chardev_push_character(&kbrd, 0x1b); |
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106 | chardev_push_character(&kbrd, 0x5b); |
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107 | chardev_push_character(&kbrd, 0x44); |
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108 | break; |
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109 | case SC_RIGHTARR: |
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110 | chardev_push_character(&kbrd, 0x1b); |
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111 | chardev_push_character(&kbrd, 0x5b); |
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112 | chardev_push_character(&kbrd, 0x43); |
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113 | break; |
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114 | case SC_UPARR: |
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115 | chardev_push_character(&kbrd, 0x1b); |
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116 | chardev_push_character(&kbrd, 0x5b); |
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117 | chardev_push_character(&kbrd, 0x41); |
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118 | break; |
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119 | case SC_DOWNARR: |
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120 | chardev_push_character(&kbrd, 0x1b); |
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121 | chardev_push_character(&kbrd, 0x5b); |
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122 | chardev_push_character(&kbrd, 0x42); |
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123 | break; |
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606 | palkovsky | 124 | case SC_HOME: |
125 | chardev_push_character(&kbrd, 0x1b); |
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126 | chardev_push_character(&kbrd, 0x4f); |
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127 | chardev_push_character(&kbrd, 0x48); |
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128 | break; |
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129 | case SC_END: |
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130 | chardev_push_character(&kbrd, 0x1b); |
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131 | chardev_push_character(&kbrd, 0x4f); |
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132 | chardev_push_character(&kbrd, 0x46); |
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133 | break; |
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134 | case SC_DELETE: |
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135 | chardev_push_character(&kbrd, 0x1b); |
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136 | chardev_push_character(&kbrd, 0x5b); |
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137 | chardev_push_character(&kbrd, 0x33); |
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138 | chardev_push_character(&kbrd, 0x7e); |
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139 | break; |
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601 | palkovsky | 140 | default: |
517 | jermar | 141 | letter = is_lower(ascii); |
508 | jermar | 142 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK); |
143 | shift = keyflags & PRESSED_SHIFT; |
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144 | if (letter && capslock) |
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145 | shift = !shift; |
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146 | if (shift) |
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147 | map = sc_secondary_map; |
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511 | jermar | 148 | chardev_push_character(&kbrd, map[sc]); |
508 | jermar | 149 | break; |
150 | } |
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151 | spinlock_unlock(&keylock); |
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152 | } |
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511 | jermar | 153 | |
1843 | jermar | 154 | uint8_t active_read_buff_read(void) |
511 | jermar | 155 | { |
878 | vana | 156 | static int i=0; |
894 | jermar | 157 | i &= (ACTIVE_READ_BUFF_SIZE-1); |
158 | if(!active_read_buff[i]) { |
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878 | vana | 159 | return 0; |
160 | } |
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161 | return active_read_buff[i++]; |
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162 | } |
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163 | |||
1843 | jermar | 164 | void active_read_buff_write(uint8_t ch) |
878 | vana | 165 | { |
166 | static int i=0; |
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894 | jermar | 167 | active_read_buff[i] = ch; |
878 | vana | 168 | i++; |
894 | jermar | 169 | i &= (ACTIVE_READ_BUFF_SIZE-1); |
878 | vana | 170 | active_read_buff[i]=0; |
171 | } |
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172 | |||
173 | |||
1843 | jermar | 174 | void active_read_key_pressed(uint8_t sc) |
878 | vana | 175 | { |
176 | char *map = sc_primary_map; |
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177 | char ascii = sc_primary_map[sc]; |
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178 | bool shift, capslock; |
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179 | bool letter = false; |
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180 | |||
181 | /*spinlock_lock(&keylock);*/ |
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182 | switch (sc) { |
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183 | case SC_LSHIFT: |
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184 | case SC_RSHIFT: |
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185 | keyflags |= PRESSED_SHIFT; |
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186 | break; |
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187 | case SC_CAPSLOCK: |
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188 | keyflags |= PRESSED_CAPSLOCK; |
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189 | break; |
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190 | case SC_SPEC_ESCAPE: |
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191 | break; |
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192 | case SC_LEFTARR: |
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193 | active_read_buff_write(0x1b); |
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194 | active_read_buff_write(0x5b); |
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195 | active_read_buff_write(0x44); |
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196 | break; |
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197 | case SC_RIGHTARR: |
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198 | active_read_buff_write(0x1b); |
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199 | active_read_buff_write(0x5b); |
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200 | active_read_buff_write(0x43); |
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201 | break; |
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202 | case SC_UPARR: |
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203 | active_read_buff_write(0x1b); |
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204 | active_read_buff_write(0x5b); |
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205 | active_read_buff_write(0x41); |
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206 | break; |
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207 | case SC_DOWNARR: |
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208 | active_read_buff_write(0x1b); |
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209 | active_read_buff_write(0x5b); |
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210 | active_read_buff_write(0x42); |
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211 | break; |
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212 | case SC_HOME: |
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213 | active_read_buff_write(0x1b); |
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214 | active_read_buff_write(0x4f); |
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215 | active_read_buff_write(0x48); |
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216 | break; |
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217 | case SC_END: |
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218 | active_read_buff_write(0x1b); |
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219 | active_read_buff_write(0x4f); |
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220 | active_read_buff_write(0x46); |
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221 | break; |
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222 | case SC_DELETE: |
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223 | active_read_buff_write(0x1b); |
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224 | active_read_buff_write(0x5b); |
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225 | active_read_buff_write(0x33); |
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226 | active_read_buff_write(0x7e); |
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227 | break; |
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228 | default: |
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229 | letter = is_lower(ascii); |
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230 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK); |
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231 | shift = keyflags & PRESSED_SHIFT; |
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232 | if (letter && capslock) |
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233 | shift = !shift; |
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234 | if (shift) |
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235 | map = sc_secondary_map; |
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236 | active_read_buff_write(map[sc]); |
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237 | break; |
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238 | } |
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239 | /*spinlock_unlock(&keylock);*/ |
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240 | |||
241 | } |
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242 | |||
1754 | jermar | 243 | /** @} |
1702 | cejka | 244 | */ |