Rev 4346 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4043 | jermar | 1 | /* |
| 2 | * Copyright (c) 2009 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 4092 | decky | 29 | /** @addtogroup genarch |
| 4043 | jermar | 30 | * @{ |
| 31 | */ |
||
| 32 | /** |
||
| 33 | * @file |
||
| 4092 | decky | 34 | * @brief Serial line processing. |
| 4043 | jermar | 35 | */ |
| 36 | |||
| 37 | #include <genarch/srln/srln.h> |
||
| 38 | #include <console/chardev.h> |
||
| 39 | #include <console/console.h> |
||
| 40 | #include <proc/thread.h> |
||
| 41 | #include <arch.h> |
||
| 4348 | svoboda | 42 | #include <string.h> |
| 4043 | jermar | 43 | |
| 4348 | svoboda | 44 | static indev_operations_t srln_raw_ops = { |
| 4092 | decky | 45 | .poll = NULL |
| 4043 | jermar | 46 | }; |
| 47 | |||
| 48 | static void ksrln(void *arg) |
||
| 49 | { |
||
| 4348 | svoboda | 50 | srln_instance_t *instance = (srln_instance_t *) arg; |
| 4092 | decky | 51 | bool cr = false; |
| 4348 | svoboda | 52 | uint32_t escape = 0; |
| 4092 | decky | 53 | |
| 54 | while (true) { |
||
| 4348 | svoboda | 55 | wchar_t ch = indev_pop_character(&instance->raw); |
| 4043 | jermar | 56 | |
| 4348 | svoboda | 57 | /* ANSI escape sequence processing */ |
| 58 | if (escape != 0) { |
||
| 59 | escape <<= 8; |
||
| 60 | escape |= ch & 0xff; |
||
| 61 | |||
| 62 | if ((escape == 0x1b4f) || (escape == 0x1b5b) || (escape == 0x1b5b33)) |
||
| 63 | continue; |
||
| 64 | |||
| 65 | switch (escape) { |
||
| 66 | case 0x1b4f46: |
||
| 67 | case 0x1b5b46: |
||
| 68 | ch = U_END_ARROW; |
||
| 69 | escape = 0; |
||
| 70 | break; |
||
| 71 | case 0x1b4f48: |
||
| 72 | case 0x1b5b48: |
||
| 73 | ch = U_HOME_ARROW; |
||
| 74 | escape = 0; |
||
| 75 | break; |
||
| 76 | case 0x1b5b41: |
||
| 77 | ch = U_UP_ARROW; |
||
| 78 | escape = 0; |
||
| 79 | break; |
||
| 80 | case 0x1b5b42: |
||
| 81 | ch = U_DOWN_ARROW; |
||
| 82 | escape = 0; |
||
| 83 | break; |
||
| 84 | case 0x1b5b43: |
||
| 85 | ch = U_RIGHT_ARROW; |
||
| 86 | escape = 0; |
||
| 87 | break; |
||
| 88 | case 0x1b5b44: |
||
| 89 | ch = U_LEFT_ARROW; |
||
| 90 | escape = 0; |
||
| 91 | break; |
||
| 92 | case 0x1b5b337e: |
||
| 93 | ch = U_DELETE; |
||
| 94 | escape = 0; |
||
| 95 | break; |
||
| 96 | default: |
||
| 97 | escape = 0; |
||
| 98 | } |
||
| 99 | } |
||
| 100 | |||
| 101 | if (ch == 0x1b) { |
||
| 102 | escape = ch & 0xff; |
||
| 103 | continue; |
||
| 104 | } |
||
| 105 | |||
| 106 | /* Replace carriage return with line feed |
||
| 107 | and suppress any following line feed */ |
||
| 4092 | decky | 108 | if ((ch == '\n') && (cr)) { |
| 109 | cr = false; |
||
| 4043 | jermar | 110 | continue; |
| 4092 | decky | 111 | } |
| 4043 | jermar | 112 | |
| 4092 | decky | 113 | if (ch == '\r') { |
| 114 | ch = '\n'; |
||
| 115 | cr = true; |
||
| 116 | } else |
||
| 117 | cr = false; |
||
| 118 | |||
| 4348 | svoboda | 119 | /* Backspace */ |
| 4092 | decky | 120 | if (ch == 0x7f) |
| 121 | ch = '\b'; |
||
| 122 | |||
| 4348 | svoboda | 123 | indev_push_character(instance->sink, ch); |
| 4043 | jermar | 124 | } |
| 125 | } |
||
| 126 | |||
| 4348 | svoboda | 127 | srln_instance_t *srln_init(void) |
| 4043 | jermar | 128 | { |
| 4348 | svoboda | 129 | srln_instance_t *instance |
| 130 | = malloc(sizeof(srln_instance_t), FRAME_ATOMIC); |
||
| 131 | if (instance) { |
||
| 132 | instance->thread |
||
| 133 | = thread_create(ksrln, (void *) instance, TASK, 0, "ksrln", false); |
||
| 134 | |||
| 135 | if (!instance->thread) { |
||
| 136 | free(instance); |
||
| 137 | return NULL; |
||
| 138 | } |
||
| 139 | |||
| 140 | instance->sink = NULL; |
||
| 141 | indev_initialize("srln", &instance->raw, &srln_raw_ops); |
||
| 142 | } |
||
| 4043 | jermar | 143 | |
| 4348 | svoboda | 144 | return instance; |
| 4043 | jermar | 145 | } |
| 146 | |||
| 4348 | svoboda | 147 | indev_t *srln_wire(srln_instance_t *instance, indev_t *sink) |
| 148 | { |
||
| 149 | ASSERT(instance); |
||
| 150 | ASSERT(sink); |
||
| 151 | |||
| 152 | instance->sink = sink; |
||
| 153 | thread_ready(instance->thread); |
||
| 154 | |||
| 155 | return &instance->raw; |
||
| 156 | } |
||
| 157 | |||
| 4043 | jermar | 158 | /** @} |
| 4052 | jermar | 159 | */ |