Pierre Provent / USBHost

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   TEST_USB_Nucleo_F429ZI Essais_USB_Nucleo_F429ZI SID_V3_Nucleo_F429ZI SID_V4_Nucleo_F429ZI_copy

mbed-rtos/rtx/TARGET_ARM7/rt_Robin.c@0:77ca32e8e04e, 2020-09-25 (annotated)

Committer:
pierreprovent
Date:
Fri Sep 25 10:17:49 2020 +0000
Revision:
0:77ca32e8e04e
Programme acquisition en enregistrement sur clef USB carte Nucleo F429ZI cours ELE118 Cnam

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pierreprovent 0:77ca32e8e04e 1 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 2 * RL-ARM - RTX
pierreprovent 0:77ca32e8e04e 3 *----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 4 * Name: RT_ROBIN.C
pierreprovent 0:77ca32e8e04e 5 * Purpose: Round Robin Task switching
pierreprovent 0:77ca32e8e04e 6 * Rev.: V4.60
pierreprovent 0:77ca32e8e04e 7 *----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 8 *
pierreprovent 0:77ca32e8e04e 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
pierreprovent 0:77ca32e8e04e 10 * All rights reserved.
pierreprovent 0:77ca32e8e04e 11 * Redistribution and use in source and binary forms, with or without
pierreprovent 0:77ca32e8e04e 12 * modification, are permitted provided that the following conditions are met:
pierreprovent 0:77ca32e8e04e 13 * - Redistributions of source code must retain the above copyright
pierreprovent 0:77ca32e8e04e 14 * notice, this list of conditions and the following disclaimer.
pierreprovent 0:77ca32e8e04e 15 * - Redistributions in binary form must reproduce the above copyright
pierreprovent 0:77ca32e8e04e 16 * notice, this list of conditions and the following disclaimer in the
pierreprovent 0:77ca32e8e04e 17 * documentation and/or other materials provided with the distribution.
pierreprovent 0:77ca32e8e04e 18 * - Neither the name of ARM nor the names of its contributors may be used
pierreprovent 0:77ca32e8e04e 19 * to endorse or promote products derived from this software without
pierreprovent 0:77ca32e8e04e 20 * specific prior written permission.
pierreprovent 0:77ca32e8e04e 21 *
pierreprovent 0:77ca32e8e04e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
pierreprovent 0:77ca32e8e04e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
pierreprovent 0:77ca32e8e04e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
pierreprovent 0:77ca32e8e04e 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
pierreprovent 0:77ca32e8e04e 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
pierreprovent 0:77ca32e8e04e 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
pierreprovent 0:77ca32e8e04e 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
pierreprovent 0:77ca32e8e04e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
pierreprovent 0:77ca32e8e04e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
pierreprovent 0:77ca32e8e04e 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
pierreprovent 0:77ca32e8e04e 32 * POSSIBILITY OF SUCH DAMAGE.
pierreprovent 0:77ca32e8e04e 33 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 34
pierreprovent 0:77ca32e8e04e 35 #include "rt_TypeDef.h"
pierreprovent 0:77ca32e8e04e 36 #include "RTX_Conf.h"
pierreprovent 0:77ca32e8e04e 37 #include "rt_List.h"
pierreprovent 0:77ca32e8e04e 38 #include "rt_Task.h"
pierreprovent 0:77ca32e8e04e 39 #include "rt_Time.h"
pierreprovent 0:77ca32e8e04e 40 #include "rt_Robin.h"
pierreprovent 0:77ca32e8e04e 41 #include "rt_HAL_CM.h"
pierreprovent 0:77ca32e8e04e 42
pierreprovent 0:77ca32e8e04e 43 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 44 * Global Variables
pierreprovent 0:77ca32e8e04e 45 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 46
pierreprovent 0:77ca32e8e04e 47 struct OS_ROBIN os_robin;
pierreprovent 0:77ca32e8e04e 48
pierreprovent 0:77ca32e8e04e 49
pierreprovent 0:77ca32e8e04e 50 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 51 * Global Functions
pierreprovent 0:77ca32e8e04e 52 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 53
pierreprovent 0:77ca32e8e04e 54 /*--------------------------- rt_init_robin ---------------------------------*/
pierreprovent 0:77ca32e8e04e 55
pierreprovent 0:77ca32e8e04e 56 __weak void rt_init_robin (void) {
pierreprovent 0:77ca32e8e04e 57 /* Initialize Round Robin variables. */
pierreprovent 0:77ca32e8e04e 58 os_robin.task = NULL;
pierreprovent 0:77ca32e8e04e 59 os_robin.tout = (U16)os_rrobin;
pierreprovent 0:77ca32e8e04e 60 }
pierreprovent 0:77ca32e8e04e 61
pierreprovent 0:77ca32e8e04e 62 /*--------------------------- rt_chk_robin ----------------------------------*/
pierreprovent 0:77ca32e8e04e 63
pierreprovent 0:77ca32e8e04e 64 __weak void rt_chk_robin (void) {
pierreprovent 0:77ca32e8e04e 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
pierreprovent 0:77ca32e8e04e 66 P_TCB p_new;
pierreprovent 0:77ca32e8e04e 67
pierreprovent 0:77ca32e8e04e 68 if (os_robin.task != os_rdy.p_lnk) {
pierreprovent 0:77ca32e8e04e 69 /* New task was suspended, reset Round Robin timeout. */
pierreprovent 0:77ca32e8e04e 70 os_robin.task = os_rdy.p_lnk;
pierreprovent 0:77ca32e8e04e 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
pierreprovent 0:77ca32e8e04e 72 }
pierreprovent 0:77ca32e8e04e 73 if (os_robin.time == (U16)os_time) {
pierreprovent 0:77ca32e8e04e 74 /* Round Robin timeout has expired, swap Robin tasks. */
pierreprovent 0:77ca32e8e04e 75 os_robin.task = NULL;
pierreprovent 0:77ca32e8e04e 76 p_new = rt_get_first (&os_rdy);
pierreprovent 0:77ca32e8e04e 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
pierreprovent 0:77ca32e8e04e 78 }
pierreprovent 0:77ca32e8e04e 79 }
pierreprovent 0:77ca32e8e04e 80
pierreprovent 0:77ca32e8e04e 81 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 82 * end of file
pierreprovent 0:77ca32e8e04e 83 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 84