I messed up the merge, so pushing it over to another repo so I don't lose it. Will tidy up and remove later
Dependencies: BufferedSerial FatFileSystemCpp mbed
rt_Robin.c
00001 /*---------------------------------------------------------------------------- 00002 * RL-ARM - RTX 00003 *---------------------------------------------------------------------------- 00004 * Name: RT_ROBIN.C 00005 * Purpose: Round Robin Task switching 00006 * Rev.: V4.60 00007 *---------------------------------------------------------------------------- 00008 * 00009 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH 00010 * All rights reserved. 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are met: 00013 * - Redistributions of source code must retain the above copyright 00014 * notice, this list of conditions and the following disclaimer. 00015 * - Redistributions in binary form must reproduce the above copyright 00016 * notice, this list of conditions and the following disclaimer in the 00017 * documentation and/or other materials provided with the distribution. 00018 * - Neither the name of ARM nor the names of its contributors may be used 00019 * to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00023 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE 00026 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00027 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00028 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00029 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00030 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00031 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *---------------------------------------------------------------------------*/ 00034 00035 #include "rt_TypeDef.h" 00036 #include "RTX_Conf.h" 00037 #include "rt_List.h" 00038 #include "rt_Task.h" 00039 #include "rt_Time.h" 00040 #include "rt_Robin.h" 00041 #include "rt_HAL_CM.h" 00042 00043 /*---------------------------------------------------------------------------- 00044 * Global Variables 00045 *---------------------------------------------------------------------------*/ 00046 00047 struct OS_ROBIN os_robin; 00048 00049 00050 /*---------------------------------------------------------------------------- 00051 * Global Functions 00052 *---------------------------------------------------------------------------*/ 00053 00054 /*--------------------------- rt_init_robin ---------------------------------*/ 00055 00056 __weak void rt_init_robin (void) { 00057 /* Initialize Round Robin variables. */ 00058 os_robin.task = NULL; 00059 os_robin.tout = (U16)os_rrobin; 00060 } 00061 00062 /*--------------------------- rt_chk_robin ----------------------------------*/ 00063 00064 __weak void rt_chk_robin (void) { 00065 /* Check if Round Robin timeout expired and switch to the next ready task.*/ 00066 P_TCB p_new; 00067 00068 if (os_robin.task != os_rdy.p_lnk) { 00069 /* New task was suspended, reset Round Robin timeout. */ 00070 os_robin.task = os_rdy.p_lnk; 00071 os_robin.time = (U16)os_time + os_robin.tout - 1; 00072 } 00073 if (os_robin.time == (U16)os_time) { 00074 /* Round Robin timeout has expired, swap Robin tasks. */ 00075 os_robin.task = NULL; 00076 p_new = rt_get_first (&os_rdy); 00077 rt_put_prio ((P_XCB)&os_rdy, p_new); 00078 } 00079 } 00080 00081 /*---------------------------------------------------------------------------- 00082 * end of file 00083 *---------------------------------------------------------------------------*/ 00084
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