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  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.  
  29. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief   Serial line processing.
  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>
  42.  
  43. chardev_t srlnin;
  44. static chardev_t *srlnout;
  45.  
  46. static void srlnin_suspend(chardev_t *d)
  47. {
  48. }
  49.  
  50. static void srlnin_resume(chardev_t *d)
  51. {
  52. }
  53.  
  54. chardev_operations_t srlnin_ops = {
  55.     .suspend = srlnin_suspend,
  56.     .resume = srlnin_resume,
  57. };
  58.  
  59. static void ksrln(void *arg)
  60. {
  61.     chardev_t *in = (chardev_t *) arg;
  62.     uint8_t ch;
  63.  
  64.     while (1) {
  65.         ch = _getc(in);
  66.        
  67.         if (ch == '\r')
  68.             continue;
  69.        
  70.         chardev_push_character(srlnout, ch);
  71.     }
  72. }
  73.  
  74.  
  75. void srln_init(chardev_t *devout)
  76. {
  77.     thread_t *t;
  78.  
  79.     chardev_initialize("srln", &srlnin, &srlnin_ops);
  80.     srlnout = devout;
  81.    
  82.     t = thread_create(ksrln, &srlnin, TASK, 0, "ksrln", false);
  83.     ASSERT(t);
  84.     thread_ready(t);
  85. }
  86.  
  87. /** @}
  88.  */
  89.  
  90.