test/twai_sem/lpc2000/sample.c

   1 /**
   2  *  Sample program for Hyper Operating System V4 Advance
   3  *
   4  * @file  sample.c
   5  * @brief %jp{サンプルプログラム}%en{Sample program}
   6  *
   7  * Copyright (C) 1998-2006 by Project HOS
   8  * http://sourceforge.jp/projects/hos/
   9  */
  10
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include "kernel.h"
  14 #include "kernel_id.h"
  15 #include "uart.h"
  16
  17
  18
  19 /** %jp{初期化ハンドラ} */
  20 void Sample_Initialize(VP_INT exinf)
  21 {
  22         /* %jp{UART初期化} */
  23         Uart_Initialize();
  24
  25         /* %jp{タスク起動} */
  26         act_tsk(TSKID_WAIT);
  27         act_tsk(TSKID_SIGNAL);
  28 }
  29
  30
  31 /** %jp{乱数取得} */
  32 int GetRand(void)
  33 {
  34         int r;
  35
  36         wai_sem(SEMID_RAND);
  37         r = rand();
  38         sig_sem(SEMID_RAND);
  39
  40         return r;
  41 }
  42
  43
  44
  45 /** %jp{待ちタスク} */
  46 void Sample_WaitTask(VP_INT exinf)
  47 {
  48         TMO     tmo;
  49         ER      ercd;
  50
  51         for ( ; ; )
  52         {
  53                 /* 待ち時間を決める */
  54                 tmo = GetRand() % 5;
  55
  56                 /* 待つ */
  57                 ercd = twai_sem(SEMID_TEST, tmo);
  58                 switch ( ercd )
  59                 {
  60                 case E_OK:
  61                         Uart_PutString("OK\n");
  62                         break;
  63
  64                 case E_TMOUT:
  65                         Uart_PutString("TMOUT\n");
  66                         break;
  67
  68                 default:
  69                         Uart_PutString("error!\n");
  70                         for ( ; ; ) ;
  71                 }
  72         }
  73 }
  74
  75
  76 /** %jp{sig_semタスク} */
  77 void Sample_SignalTask(VP_INT exinf)
  78 {
  79         RELTIM tim;
  80
  81         for ( ; ; )
  82         {
  83                 tim = GetRand() % 5;
  84                 dly_tsk(tim);
  85
  86                 sig_sem(SEMID_TEST);
  87         }
  88 }
  89
  90
  91
  92 /* end of file */