| 0,0 → 1,159 |
|---|
| /* |
| * Copyright (c) 2009 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup genarch |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief Serial line processing. |
| */ |
| |
| #include <genarch/srln/srln.h> |
| #include <console/chardev.h> |
| #include <console/console.h> |
| #include <proc/thread.h> |
| #include <arch.h> |
| #include <string.h> |
| |
| static indev_operations_t srln_raw_ops = { |
| .poll = NULL |
| }; |
| |
| static void ksrln(void *arg) |
| { |
| srln_instance_t *instance = (srln_instance_t *) arg; |
| bool cr = false; |
| uint32_t escape = 0; |
| |
| while (true) { |
| wchar_t ch = indev_pop_character(&instance->raw); |
| |
| /* ANSI escape sequence processing */ |
| if (escape != 0) { |
| escape <<= 8; |
| escape |= ch & 0xff; |
| |
| if ((escape == 0x1b4f) || (escape == 0x1b5b) || (escape == 0x1b5b33)) |
| continue; |
| |
| switch (escape) { |
| case 0x1b4f46: |
| case 0x1b5b46: |
| ch = U_END_ARROW; |
| escape = 0; |
| break; |
| case 0x1b4f48: |
| case 0x1b5b48: |
| ch = U_HOME_ARROW; |
| escape = 0; |
| break; |
| case 0x1b5b41: |
| ch = U_UP_ARROW; |
| escape = 0; |
| break; |
| case 0x1b5b42: |
| ch = U_DOWN_ARROW; |
| escape = 0; |
| break; |
| case 0x1b5b43: |
| ch = U_RIGHT_ARROW; |
| escape = 0; |
| break; |
| case 0x1b5b44: |
| ch = U_LEFT_ARROW; |
| escape = 0; |
| break; |
| case 0x1b5b337e: |
| ch = U_DELETE; |
| escape = 0; |
| break; |
| default: |
| escape = 0; |
| } |
| } |
| |
| if (ch == 0x1b) { |
| escape = ch & 0xff; |
| continue; |
| } |
| |
| /* Replace carriage return with line feed |
| and suppress any following line feed */ |
| if ((ch == '\n') && (cr)) { |
| cr = false; |
| continue; |
| } |
| |
| if (ch == '\r') { |
| ch = '\n'; |
| cr = true; |
| } else |
| cr = false; |
| |
| /* Backspace */ |
| if (ch == 0x7f) |
| ch = '\b'; |
| |
| indev_push_character(instance->sink, ch); |
| } |
| } |
| |
| srln_instance_t *srln_init(void) |
| { |
| srln_instance_t *instance |
| = malloc(sizeof(srln_instance_t), FRAME_ATOMIC); |
| if (instance) { |
| instance->thread |
| = thread_create(ksrln, (void *) instance, TASK, 0, "ksrln", false); |
| |
| if (!instance->thread) { |
| free(instance); |
| return NULL; |
| } |
| |
| instance->sink = NULL; |
| indev_initialize("srln", &instance->raw, &srln_raw_ops); |
| } |
| |
| return instance; |
| } |
| |
| indev_t *srln_wire(srln_instance_t *instance, indev_t *sink) |
| { |
| ASSERT(instance); |
| ASSERT(sink); |
| |
| instance->sink = sink; |
| thread_ready(instance->thread); |
| |
| return &instance->raw; |
| } |
| |
| /** @} |
| */ |