36372 mbed / Mbed 2 deprecated SP14P1_skeleton

skeleton for lab1

Dependencies:   AvailableMemory mbed-rtos mbed

Fork of helloaabbc by 32314 mbed

mbed-rtos/rtx/rt_Robin.c@0:1c8f2727e9f5, 2014-04-03 (annotated)

Committer:
y7jin
Date:
Thu Apr 03 22:56:32 2014 +0000
Revision:
0:1c8f2727e9f5
hello

Who changed what in which revision?

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y7jin 0:1c8f2727e9f5 1 /*----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 2 * RL-ARM - RTX
y7jin 0:1c8f2727e9f5 3 *----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 4 * Name: RT_ROBIN.C
y7jin 0:1c8f2727e9f5 5 * Purpose: Round Robin Task switching
y7jin 0:1c8f2727e9f5 6 * Rev.: V4.60
y7jin 0:1c8f2727e9f5 7 *----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 8 *
y7jin 0:1c8f2727e9f5 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
y7jin 0:1c8f2727e9f5 10 * All rights reserved.
y7jin 0:1c8f2727e9f5 11 * Redistribution and use in source and binary forms, with or without
y7jin 0:1c8f2727e9f5 12 * modification, are permitted provided that the following conditions are met:
y7jin 0:1c8f2727e9f5 13 * - Redistributions of source code must retain the above copyright
y7jin 0:1c8f2727e9f5 14 * notice, this list of conditions and the following disclaimer.
y7jin 0:1c8f2727e9f5 15 * - Redistributions in binary form must reproduce the above copyright
y7jin 0:1c8f2727e9f5 16 * notice, this list of conditions and the following disclaimer in the
y7jin 0:1c8f2727e9f5 17 * documentation and/or other materials provided with the distribution.
y7jin 0:1c8f2727e9f5 18 * - Neither the name of ARM nor the names of its contributors may be used
y7jin 0:1c8f2727e9f5 19 * to endorse or promote products derived from this software without
y7jin 0:1c8f2727e9f5 20 * specific prior written permission.
y7jin 0:1c8f2727e9f5 21 *
y7jin 0:1c8f2727e9f5 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
y7jin 0:1c8f2727e9f5 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
y7jin 0:1c8f2727e9f5 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
y7jin 0:1c8f2727e9f5 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
y7jin 0:1c8f2727e9f5 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
y7jin 0:1c8f2727e9f5 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
y7jin 0:1c8f2727e9f5 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
y7jin 0:1c8f2727e9f5 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
y7jin 0:1c8f2727e9f5 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
y7jin 0:1c8f2727e9f5 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
y7jin 0:1c8f2727e9f5 32 * POSSIBILITY OF SUCH DAMAGE.
y7jin 0:1c8f2727e9f5 33 *---------------------------------------------------------------------------*/
y7jin 0:1c8f2727e9f5 34
y7jin 0:1c8f2727e9f5 35 #include "rt_TypeDef.h"
y7jin 0:1c8f2727e9f5 36 #include "RTX_Config.h"
y7jin 0:1c8f2727e9f5 37 #include "rt_List.h"
y7jin 0:1c8f2727e9f5 38 #include "rt_Task.h"
y7jin 0:1c8f2727e9f5 39 #include "rt_Time.h"
y7jin 0:1c8f2727e9f5 40 #include "rt_Robin.h"
y7jin 0:1c8f2727e9f5 41 #include "rt_HAL_CM.h"
y7jin 0:1c8f2727e9f5 42
y7jin 0:1c8f2727e9f5 43 /*----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 44 * Global Variables
y7jin 0:1c8f2727e9f5 45 *---------------------------------------------------------------------------*/
y7jin 0:1c8f2727e9f5 46
y7jin 0:1c8f2727e9f5 47 struct OS_ROBIN os_robin;
y7jin 0:1c8f2727e9f5 48
y7jin 0:1c8f2727e9f5 49
y7jin 0:1c8f2727e9f5 50 /*----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 51 * Global Functions
y7jin 0:1c8f2727e9f5 52 *---------------------------------------------------------------------------*/
y7jin 0:1c8f2727e9f5 53
y7jin 0:1c8f2727e9f5 54 /*--------------------------- rt_init_robin ---------------------------------*/
y7jin 0:1c8f2727e9f5 55
y7jin 0:1c8f2727e9f5 56 __weak void rt_init_robin (void) {
y7jin 0:1c8f2727e9f5 57 /* Initialize Round Robin variables. */
y7jin 0:1c8f2727e9f5 58 os_robin.task = NULL;
y7jin 0:1c8f2727e9f5 59 os_robin.tout = (U16)os_rrobin;
y7jin 0:1c8f2727e9f5 60 }
y7jin 0:1c8f2727e9f5 61
y7jin 0:1c8f2727e9f5 62 /*--------------------------- rt_chk_robin ----------------------------------*/
y7jin 0:1c8f2727e9f5 63
y7jin 0:1c8f2727e9f5 64 __weak void rt_chk_robin (void) {
y7jin 0:1c8f2727e9f5 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
y7jin 0:1c8f2727e9f5 66 P_TCB p_new;
y7jin 0:1c8f2727e9f5 67
y7jin 0:1c8f2727e9f5 68 if (os_robin.task != os_rdy.p_lnk) {
y7jin 0:1c8f2727e9f5 69 /* New task was suspended, reset Round Robin timeout. */
y7jin 0:1c8f2727e9f5 70 os_robin.task = os_rdy.p_lnk;
y7jin 0:1c8f2727e9f5 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
y7jin 0:1c8f2727e9f5 72 }
y7jin 0:1c8f2727e9f5 73 if (os_robin.time == (U16)os_time) {
y7jin 0:1c8f2727e9f5 74 /* Round Robin timeout has expired, swap Robin tasks. */
y7jin 0:1c8f2727e9f5 75 os_robin.task = NULL;
y7jin 0:1c8f2727e9f5 76 p_new = rt_get_first (&os_rdy);
y7jin 0:1c8f2727e9f5 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
y7jin 0:1c8f2727e9f5 78 }
y7jin 0:1c8f2727e9f5 79 }
y7jin 0:1c8f2727e9f5 80
y7jin 0:1c8f2727e9f5 81 /*----------------------------------------------------------------------------
y7jin 0:1c8f2727e9f5 82 * end of file
y7jin 0:1c8f2727e9f5 83 *---------------------------------------------------------------------------*/
y7jin 0:1c8f2727e9f5 84