ELEC2645 (2018/19) / Mbed 2 deprecated el17dg

Initial publish

Dependencies:   mbed

Fork of el17dg by Dmitrijs Griskovs

mbed-rtos/rtx/TARGET_ARM7/rt_Robin.c@40:e3bbda7444fa, 2019-05-07 (annotated)

Committer:
Noximilien
Date:
Tue May 07 15:22:35 2019 +0000
Revision:
40:e3bbda7444fa
Parent:
1:5aa2312d3e94 
The Final, Submission Version. I have read and agreed to the academic integrity. SID:201160286

Who changed what in which revision?

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Noximilien 1:5aa2312d3e94 1 /*----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 2 * RL-ARM - RTX
Noximilien 1:5aa2312d3e94 3 *----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 4 * Name: RT_ROBIN.C
Noximilien 1:5aa2312d3e94 5 * Purpose: Round Robin Task switching
Noximilien 1:5aa2312d3e94 6 * Rev.: V4.60
Noximilien 1:5aa2312d3e94 7 *----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 8 *
Noximilien 1:5aa2312d3e94 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
Noximilien 1:5aa2312d3e94 10 * All rights reserved.
Noximilien 1:5aa2312d3e94 11 * Redistribution and use in source and binary forms, with or without
Noximilien 1:5aa2312d3e94 12 * modification, are permitted provided that the following conditions are met:
Noximilien 1:5aa2312d3e94 13 * - Redistributions of source code must retain the above copyright
Noximilien 1:5aa2312d3e94 14 * notice, this list of conditions and the following disclaimer.
Noximilien 1:5aa2312d3e94 15 * - Redistributions in binary form must reproduce the above copyright
Noximilien 1:5aa2312d3e94 16 * notice, this list of conditions and the following disclaimer in the
Noximilien 1:5aa2312d3e94 17 * documentation and/or other materials provided with the distribution.
Noximilien 1:5aa2312d3e94 18 * - Neither the name of ARM nor the names of its contributors may be used
Noximilien 1:5aa2312d3e94 19 * to endorse or promote products derived from this software without
Noximilien 1:5aa2312d3e94 20 * specific prior written permission.
Noximilien 1:5aa2312d3e94 21 *
Noximilien 1:5aa2312d3e94 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Noximilien 1:5aa2312d3e94 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Noximilien 1:5aa2312d3e94 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Noximilien 1:5aa2312d3e94 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Noximilien 1:5aa2312d3e94 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Noximilien 1:5aa2312d3e94 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Noximilien 1:5aa2312d3e94 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Noximilien 1:5aa2312d3e94 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Noximilien 1:5aa2312d3e94 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Noximilien 1:5aa2312d3e94 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Noximilien 1:5aa2312d3e94 32 * POSSIBILITY OF SUCH DAMAGE.
Noximilien 1:5aa2312d3e94 33 *---------------------------------------------------------------------------*/
Noximilien 1:5aa2312d3e94 34
Noximilien 1:5aa2312d3e94 35 #include "rt_TypeDef.h"
Noximilien 1:5aa2312d3e94 36 #include "RTX_Conf.h"
Noximilien 1:5aa2312d3e94 37 #include "rt_List.h"
Noximilien 1:5aa2312d3e94 38 #include "rt_Task.h"
Noximilien 1:5aa2312d3e94 39 #include "rt_Time.h"
Noximilien 1:5aa2312d3e94 40 #include "rt_Robin.h"
Noximilien 1:5aa2312d3e94 41 #include "rt_HAL_CM.h"
Noximilien 1:5aa2312d3e94 42
Noximilien 1:5aa2312d3e94 43 /*----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 44 * Global Variables
Noximilien 1:5aa2312d3e94 45 *---------------------------------------------------------------------------*/
Noximilien 1:5aa2312d3e94 46
Noximilien 1:5aa2312d3e94 47 struct OS_ROBIN os_robin;
Noximilien 1:5aa2312d3e94 48
Noximilien 1:5aa2312d3e94 49
Noximilien 1:5aa2312d3e94 50 /*----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 51 * Global Functions
Noximilien 1:5aa2312d3e94 52 *---------------------------------------------------------------------------*/
Noximilien 1:5aa2312d3e94 53
Noximilien 1:5aa2312d3e94 54 /*--------------------------- rt_init_robin ---------------------------------*/
Noximilien 1:5aa2312d3e94 55
Noximilien 1:5aa2312d3e94 56 __weak void rt_init_robin (void) {
Noximilien 1:5aa2312d3e94 57 /* Initialize Round Robin variables. */
Noximilien 1:5aa2312d3e94 58 os_robin.task = NULL;
Noximilien 1:5aa2312d3e94 59 os_robin.tout = (U16)os_rrobin;
Noximilien 1:5aa2312d3e94 60 }
Noximilien 1:5aa2312d3e94 61
Noximilien 1:5aa2312d3e94 62 /*--------------------------- rt_chk_robin ----------------------------------*/
Noximilien 1:5aa2312d3e94 63
Noximilien 1:5aa2312d3e94 64 __weak void rt_chk_robin (void) {
Noximilien 1:5aa2312d3e94 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
Noximilien 1:5aa2312d3e94 66 P_TCB p_new;
Noximilien 1:5aa2312d3e94 67
Noximilien 1:5aa2312d3e94 68 if (os_robin.task != os_rdy.p_lnk) {
Noximilien 1:5aa2312d3e94 69 /* New task was suspended, reset Round Robin timeout. */
Noximilien 1:5aa2312d3e94 70 os_robin.task = os_rdy.p_lnk;
Noximilien 1:5aa2312d3e94 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
Noximilien 1:5aa2312d3e94 72 }
Noximilien 1:5aa2312d3e94 73 if (os_robin.time == (U16)os_time) {
Noximilien 1:5aa2312d3e94 74 /* Round Robin timeout has expired, swap Robin tasks. */
Noximilien 1:5aa2312d3e94 75 os_robin.task = NULL;
Noximilien 1:5aa2312d3e94 76 p_new = rt_get_first (&os_rdy);
Noximilien 1:5aa2312d3e94 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
Noximilien 1:5aa2312d3e94 78 }
Noximilien 1:5aa2312d3e94 79 }
Noximilien 1:5aa2312d3e94 80
Noximilien 1:5aa2312d3e94 81 /*----------------------------------------------------------------------------
Noximilien 1:5aa2312d3e94 82 * end of file
Noximilien 1:5aa2312d3e94 83 *---------------------------------------------------------------------------*/
Noximilien 1:5aa2312d3e94 84