| 1 | /*
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| 2 | * Copyright (c) 2009 Jakub Jermar
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| 3 | * All rights reserved.
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| 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 |
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| 29 | /** @addtogroup genarch
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | * @brief Serial line processing.
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| 35 | */
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| 36 |
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| 37 | #include <genarch/srln/srln.h>
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| 38 | #include <console/chardev.h>
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| 39 | #include <console/console.h>
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| 40 | #include <proc/thread.h>
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| 41 | #include <arch.h>
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| 42 |
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| 43 | static indev_t srlnout;
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| 44 |
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| 45 | indev_operations_t srlnout_ops = {
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| 46 | .poll = NULL
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| 47 | };
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| 48 |
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| 49 | static void ksrln(void *arg)
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| 50 | {
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| 51 | indev_t *in = (indev_t *) arg;
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| 52 | bool cr = false;
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| 53 |
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| 54 | while (true) {
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| 55 | uint8_t ch = _getc(in);
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| 56 |
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| 57 | if ((ch == '\n') && (cr)) {
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| 58 | cr = false;
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| 59 | continue;
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| 60 | }
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| 61 |
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| 62 | if (ch == '\r') {
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| 63 | ch = '\n';
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| 64 | cr = true;
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| 65 | } else
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| 66 | cr = false;
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| 67 |
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| 68 | if (ch == 0x7f)
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| 69 | ch = '\b';
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| 70 |
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| 71 | indev_push_character(stdin, ch);
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| 72 | }
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| 73 | }
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| 74 |
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| 75 | void srln_init(indev_t *devin)
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| 76 | {
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| 77 | indev_initialize("srln", &srlnout, &srlnout_ops);
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| 78 | thread_t *thread
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| 79 | = thread_create(ksrln, devin, TASK, 0, "ksrln", false);
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| 80 |
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| 81 | if (thread) {
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| 82 | stdin = &srlnout;
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| 83 | thread_ready(thread);
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | /** @}
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| 88 | */
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