Shoaib Ahmed / Mbed 2 deprecated uzairkhan

Final 350 project

Dependencies:   uzair Camera_LS_Y201 F7_Ethernet LCD_DISCO_F746NG NetworkAPI SDFileSystem mbed

mbed-rtos/rtx/TARGET_ARM7/rt_Robin.c@0:791a779d6220, 2017-07-31 (annotated)

Committer:
shoaib_ahmed
Date:
Mon Jul 31 09:16:35 2017 +0000
Revision:
0:791a779d6220
final project;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shoaib_ahmed 0:791a779d6220 1 /*----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 2 * RL-ARM - RTX
shoaib_ahmed 0:791a779d6220 3 *----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 4 * Name: RT_ROBIN.C
shoaib_ahmed 0:791a779d6220 5 * Purpose: Round Robin Task switching
shoaib_ahmed 0:791a779d6220 6 * Rev.: V4.60
shoaib_ahmed 0:791a779d6220 7 *----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 8 *
shoaib_ahmed 0:791a779d6220 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
shoaib_ahmed 0:791a779d6220 10 * All rights reserved.
shoaib_ahmed 0:791a779d6220 11 * Redistribution and use in source and binary forms, with or without
shoaib_ahmed 0:791a779d6220 12 * modification, are permitted provided that the following conditions are met:
shoaib_ahmed 0:791a779d6220 13 * - Redistributions of source code must retain the above copyright
shoaib_ahmed 0:791a779d6220 14 * notice, this list of conditions and the following disclaimer.
shoaib_ahmed 0:791a779d6220 15 * - Redistributions in binary form must reproduce the above copyright
shoaib_ahmed 0:791a779d6220 16 * notice, this list of conditions and the following disclaimer in the
shoaib_ahmed 0:791a779d6220 17 * documentation and/or other materials provided with the distribution.
shoaib_ahmed 0:791a779d6220 18 * - Neither the name of ARM nor the names of its contributors may be used
shoaib_ahmed 0:791a779d6220 19 * to endorse or promote products derived from this software without
shoaib_ahmed 0:791a779d6220 20 * specific prior written permission.
shoaib_ahmed 0:791a779d6220 21 *
shoaib_ahmed 0:791a779d6220 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
shoaib_ahmed 0:791a779d6220 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
shoaib_ahmed 0:791a779d6220 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
shoaib_ahmed 0:791a779d6220 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
shoaib_ahmed 0:791a779d6220 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
shoaib_ahmed 0:791a779d6220 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
shoaib_ahmed 0:791a779d6220 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
shoaib_ahmed 0:791a779d6220 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
shoaib_ahmed 0:791a779d6220 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
shoaib_ahmed 0:791a779d6220 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
shoaib_ahmed 0:791a779d6220 32 * POSSIBILITY OF SUCH DAMAGE.
shoaib_ahmed 0:791a779d6220 33 *---------------------------------------------------------------------------*/
shoaib_ahmed 0:791a779d6220 34
shoaib_ahmed 0:791a779d6220 35 #include "rt_TypeDef.h"
shoaib_ahmed 0:791a779d6220 36 #include "RTX_Conf.h"
shoaib_ahmed 0:791a779d6220 37 #include "rt_List.h"
shoaib_ahmed 0:791a779d6220 38 #include "rt_Task.h"
shoaib_ahmed 0:791a779d6220 39 #include "rt_Time.h"
shoaib_ahmed 0:791a779d6220 40 #include "rt_Robin.h"
shoaib_ahmed 0:791a779d6220 41 #include "rt_HAL_CM.h"
shoaib_ahmed 0:791a779d6220 42
shoaib_ahmed 0:791a779d6220 43 /*----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 44 * Global Variables
shoaib_ahmed 0:791a779d6220 45 *---------------------------------------------------------------------------*/
shoaib_ahmed 0:791a779d6220 46
shoaib_ahmed 0:791a779d6220 47 struct OS_ROBIN os_robin;
shoaib_ahmed 0:791a779d6220 48
shoaib_ahmed 0:791a779d6220 49
shoaib_ahmed 0:791a779d6220 50 /*----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 51 * Global Functions
shoaib_ahmed 0:791a779d6220 52 *---------------------------------------------------------------------------*/
shoaib_ahmed 0:791a779d6220 53
shoaib_ahmed 0:791a779d6220 54 /*--------------------------- rt_init_robin ---------------------------------*/
shoaib_ahmed 0:791a779d6220 55
shoaib_ahmed 0:791a779d6220 56 __weak void rt_init_robin (void) {
shoaib_ahmed 0:791a779d6220 57 /* Initialize Round Robin variables. */
shoaib_ahmed 0:791a779d6220 58 os_robin.task = NULL;
shoaib_ahmed 0:791a779d6220 59 os_robin.tout = (U16)os_rrobin;
shoaib_ahmed 0:791a779d6220 60 }
shoaib_ahmed 0:791a779d6220 61
shoaib_ahmed 0:791a779d6220 62 /*--------------------------- rt_chk_robin ----------------------------------*/
shoaib_ahmed 0:791a779d6220 63
shoaib_ahmed 0:791a779d6220 64 __weak void rt_chk_robin (void) {
shoaib_ahmed 0:791a779d6220 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
shoaib_ahmed 0:791a779d6220 66 P_TCB p_new;
shoaib_ahmed 0:791a779d6220 67
shoaib_ahmed 0:791a779d6220 68 if (os_robin.task != os_rdy.p_lnk) {
shoaib_ahmed 0:791a779d6220 69 /* New task was suspended, reset Round Robin timeout. */
shoaib_ahmed 0:791a779d6220 70 os_robin.task = os_rdy.p_lnk;
shoaib_ahmed 0:791a779d6220 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
shoaib_ahmed 0:791a779d6220 72 }
shoaib_ahmed 0:791a779d6220 73 if (os_robin.time == (U16)os_time) {
shoaib_ahmed 0:791a779d6220 74 /* Round Robin timeout has expired, swap Robin tasks. */
shoaib_ahmed 0:791a779d6220 75 os_robin.task = NULL;
shoaib_ahmed 0:791a779d6220 76 p_new = rt_get_first (&os_rdy);
shoaib_ahmed 0:791a779d6220 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
shoaib_ahmed 0:791a779d6220 78 }
shoaib_ahmed 0:791a779d6220 79 }
shoaib_ahmed 0:791a779d6220 80
shoaib_ahmed 0:791a779d6220 81 /*----------------------------------------------------------------------------
shoaib_ahmed 0:791a779d6220 82 * end of file
shoaib_ahmed 0:791a779d6220 83 *---------------------------------------------------------------------------*/
shoaib_ahmed 0:791a779d6220 84