tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_A/rt_Task.h

   1 /*----------------------------------------------------------------------------
   2  *      RL-ARM - RTX
   3  *----------------------------------------------------------------------------
   4  *      Name:    RT_TASK.H
   5  *      Purpose: Task functions and system start up.
   6  *      Rev.:    V4.60
   7  *----------------------------------------------------------------------------
   8  *
   9  * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
  10  * All rights reserved.
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions are met:
  13  *  - Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *  - Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *  - Neither the name of ARM  nor the names of its contributors may be used
  19  *    to endorse or promote products derived from this software without
  20  *    specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  *---------------------------------------------------------------------------*/
  34
  35 /* Definitions */
  36
  37 /* Values for 'state'   */
  38 #define INACTIVE        0
  39 #define READY           1
  40 #define RUNNING         2
  41 #define WAIT_DLY        3
  42 #define WAIT_ITV        4
  43 #define WAIT_OR         5
  44 #define WAIT_AND        6
  45 #define WAIT_SEM        7
  46 #define WAIT_MBX        8
  47 #define WAIT_MUT        9
  48
  49 /* Return codes */
  50 #define OS_R_TMO        0x01
  51 #define OS_R_EVT        0x02
  52 #define OS_R_SEM        0x03
  53 #define OS_R_MBX        0x04
  54 #define OS_R_MUT        0x05
  55
  56 #define OS_R_OK         0x00
  57 #define OS_R_NOK        0xff
  58
  59 /* Variables */
  60 extern struct OS_TSK os_tsk;
  61 extern struct OS_TCB os_idle_TCB;
  62
  63 /* Functions */
  64 extern void      rt_switch_req (P_TCB p_new);
  65 extern void      rt_dispatch   (P_TCB next_TCB);
  66 extern void      rt_block      (U16 timeout, U8 block_state);
  67 extern void      rt_tsk_pass   (void);
  68 extern OS_TID    rt_tsk_self   (void);
  69 extern OS_RESULT rt_tsk_prio   (OS_TID task_id, U8 new_prio);
  70 extern OS_TID    rt_tsk_create (FUNCP task, U32 prio_stksz, void *stk, void *argv);
  71 extern OS_RESULT rt_tsk_delete (OS_TID task_id);
  72 #ifdef __CMSIS_RTOS
  73 extern void      rt_sys_init   (void);
  74 extern void      rt_sys_start  (void);
  75 #else
  76 extern void      rt_sys_init   (FUNCP first_task, U32 prio_stksz, void *stk);
  77 #endif
  78
  79 /*----------------------------------------------------------------------------
  80  * end of file
  81  *---------------------------------------------------------------------------*/
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