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Dependents:   Mecatro_Filtre

rtx/TARGET_ARM7/rt_Event.c@0:4a2c9c1f5b9e, 2021-03-15 (annotated)

Committer:
mecatro_prod
Date:
Mon Mar 15 14:18:11 2021 +0000
Revision:
0:4a2c9c1f5b9e
Pas de changement

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mecatro_prod 0:4a2c9c1f5b9e 1 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 2 * RL-ARM - RTX
mecatro_prod 0:4a2c9c1f5b9e 3 *----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 4 * Name: RT_EVENT.C
mecatro_prod 0:4a2c9c1f5b9e 5 * Purpose: Implements waits and wake-ups for event flags
mecatro_prod 0:4a2c9c1f5b9e 6 * Rev.: V4.60
mecatro_prod 0:4a2c9c1f5b9e 7 *----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 8 *
mecatro_prod 0:4a2c9c1f5b9e 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
mecatro_prod 0:4a2c9c1f5b9e 10 * All rights reserved.
mecatro_prod 0:4a2c9c1f5b9e 11 * Redistribution and use in source and binary forms, with or without
mecatro_prod 0:4a2c9c1f5b9e 12 * modification, are permitted provided that the following conditions are met:
mecatro_prod 0:4a2c9c1f5b9e 13 * - Redistributions of source code must retain the above copyright
mecatro_prod 0:4a2c9c1f5b9e 14 * notice, this list of conditions and the following disclaimer.
mecatro_prod 0:4a2c9c1f5b9e 15 * - Redistributions in binary form must reproduce the above copyright
mecatro_prod 0:4a2c9c1f5b9e 16 * notice, this list of conditions and the following disclaimer in the
mecatro_prod 0:4a2c9c1f5b9e 17 * documentation and/or other materials provided with the distribution.
mecatro_prod 0:4a2c9c1f5b9e 18 * - Neither the name of ARM nor the names of its contributors may be used
mecatro_prod 0:4a2c9c1f5b9e 19 * to endorse or promote products derived from this software without
mecatro_prod 0:4a2c9c1f5b9e 20 * specific prior written permission.
mecatro_prod 0:4a2c9c1f5b9e 21 *
mecatro_prod 0:4a2c9c1f5b9e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mecatro_prod 0:4a2c9c1f5b9e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mecatro_prod 0:4a2c9c1f5b9e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mecatro_prod 0:4a2c9c1f5b9e 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mecatro_prod 0:4a2c9c1f5b9e 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mecatro_prod 0:4a2c9c1f5b9e 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mecatro_prod 0:4a2c9c1f5b9e 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mecatro_prod 0:4a2c9c1f5b9e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mecatro_prod 0:4a2c9c1f5b9e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mecatro_prod 0:4a2c9c1f5b9e 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mecatro_prod 0:4a2c9c1f5b9e 32 * POSSIBILITY OF SUCH DAMAGE.
mecatro_prod 0:4a2c9c1f5b9e 33 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 34
mecatro_prod 0:4a2c9c1f5b9e 35 #include "rt_TypeDef.h"
mecatro_prod 0:4a2c9c1f5b9e 36 #include "RTX_Conf.h"
mecatro_prod 0:4a2c9c1f5b9e 37 #include "rt_System.h"
mecatro_prod 0:4a2c9c1f5b9e 38 #include "rt_Event.h"
mecatro_prod 0:4a2c9c1f5b9e 39 #include "rt_List.h"
mecatro_prod 0:4a2c9c1f5b9e 40 #include "rt_Task.h"
mecatro_prod 0:4a2c9c1f5b9e 41 #include "rt_HAL_CM.h"
mecatro_prod 0:4a2c9c1f5b9e 42
mecatro_prod 0:4a2c9c1f5b9e 43
mecatro_prod 0:4a2c9c1f5b9e 44 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 45 * Functions
mecatro_prod 0:4a2c9c1f5b9e 46 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 47
mecatro_prod 0:4a2c9c1f5b9e 48
mecatro_prod 0:4a2c9c1f5b9e 49 /*--------------------------- rt_evt_wait -----------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 50
mecatro_prod 0:4a2c9c1f5b9e 51 OS_RESULT rt_evt_wait (U16 wait_flags, U16 timeout, BOOL and_wait) {
mecatro_prod 0:4a2c9c1f5b9e 52 /* Wait for one or more event flags with optional time-out. */
mecatro_prod 0:4a2c9c1f5b9e 53 /* "wait_flags" identifies the flags to wait for. */
mecatro_prod 0:4a2c9c1f5b9e 54 /* "timeout" is the time-out limit in system ticks (0xffff if no time-out) */
mecatro_prod 0:4a2c9c1f5b9e 55 /* "and_wait" specifies the AND-ing of "wait_flags" as condition to be met */
mecatro_prod 0:4a2c9c1f5b9e 56 /* to complete the wait. (OR-ing if set to 0). */
mecatro_prod 0:4a2c9c1f5b9e 57 U32 block_state;
mecatro_prod 0:4a2c9c1f5b9e 58
mecatro_prod 0:4a2c9c1f5b9e 59 if (and_wait) {
mecatro_prod 0:4a2c9c1f5b9e 60 /* Check for AND-connected events */
mecatro_prod 0:4a2c9c1f5b9e 61 if ((os_tsk.run->events & wait_flags) == wait_flags) {
mecatro_prod 0:4a2c9c1f5b9e 62 os_tsk.run->events &= ~wait_flags;
mecatro_prod 0:4a2c9c1f5b9e 63 return (OS_R_EVT);
mecatro_prod 0:4a2c9c1f5b9e 64 }
mecatro_prod 0:4a2c9c1f5b9e 65 block_state = WAIT_AND;
mecatro_prod 0:4a2c9c1f5b9e 66 }
mecatro_prod 0:4a2c9c1f5b9e 67 else {
mecatro_prod 0:4a2c9c1f5b9e 68 /* Check for OR-connected events */
mecatro_prod 0:4a2c9c1f5b9e 69 if (os_tsk.run->events & wait_flags) {
mecatro_prod 0:4a2c9c1f5b9e 70 os_tsk.run->waits = os_tsk.run->events & wait_flags;
mecatro_prod 0:4a2c9c1f5b9e 71 os_tsk.run->events &= ~wait_flags;
mecatro_prod 0:4a2c9c1f5b9e 72 return (OS_R_EVT);
mecatro_prod 0:4a2c9c1f5b9e 73 }
mecatro_prod 0:4a2c9c1f5b9e 74 block_state = WAIT_OR;
mecatro_prod 0:4a2c9c1f5b9e 75 }
mecatro_prod 0:4a2c9c1f5b9e 76 /* Task has to wait */
mecatro_prod 0:4a2c9c1f5b9e 77 os_tsk.run->waits = wait_flags;
mecatro_prod 0:4a2c9c1f5b9e 78 rt_block (timeout, (U8)block_state);
mecatro_prod 0:4a2c9c1f5b9e 79 return (OS_R_TMO);
mecatro_prod 0:4a2c9c1f5b9e 80 }
mecatro_prod 0:4a2c9c1f5b9e 81
mecatro_prod 0:4a2c9c1f5b9e 82
mecatro_prod 0:4a2c9c1f5b9e 83 /*--------------------------- rt_evt_set ------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 84
mecatro_prod 0:4a2c9c1f5b9e 85 void rt_evt_set (U16 event_flags, OS_TID task_id) {
mecatro_prod 0:4a2c9c1f5b9e 86 /* Set one or more event flags of a selectable task. */
mecatro_prod 0:4a2c9c1f5b9e 87 P_TCB p_tcb;
mecatro_prod 0:4a2c9c1f5b9e 88
mecatro_prod 0:4a2c9c1f5b9e 89 p_tcb = os_active_TCB[task_id-1];
mecatro_prod 0:4a2c9c1f5b9e 90 if (p_tcb == NULL) {
mecatro_prod 0:4a2c9c1f5b9e 91 return;
mecatro_prod 0:4a2c9c1f5b9e 92 }
mecatro_prod 0:4a2c9c1f5b9e 93 p_tcb->events |= event_flags;
mecatro_prod 0:4a2c9c1f5b9e 94 event_flags = p_tcb->waits;
mecatro_prod 0:4a2c9c1f5b9e 95 /* If the task is not waiting for an event, it should not be put */
mecatro_prod 0:4a2c9c1f5b9e 96 /* to ready state. */
mecatro_prod 0:4a2c9c1f5b9e 97 if (p_tcb->state == WAIT_AND) {
mecatro_prod 0:4a2c9c1f5b9e 98 /* Check for AND-connected events */
mecatro_prod 0:4a2c9c1f5b9e 99 if ((p_tcb->events & event_flags) == event_flags) {
mecatro_prod 0:4a2c9c1f5b9e 100 goto wkup;
mecatro_prod 0:4a2c9c1f5b9e 101 }
mecatro_prod 0:4a2c9c1f5b9e 102 }
mecatro_prod 0:4a2c9c1f5b9e 103 if (p_tcb->state == WAIT_OR) {
mecatro_prod 0:4a2c9c1f5b9e 104 /* Check for OR-connected events */
mecatro_prod 0:4a2c9c1f5b9e 105 if (p_tcb->events & event_flags) {
mecatro_prod 0:4a2c9c1f5b9e 106 p_tcb->waits &= p_tcb->events;
mecatro_prod 0:4a2c9c1f5b9e 107 wkup: p_tcb->events &= ~event_flags;
mecatro_prod 0:4a2c9c1f5b9e 108 rt_rmv_dly (p_tcb);
mecatro_prod 0:4a2c9c1f5b9e 109 p_tcb->state = READY;
mecatro_prod 0:4a2c9c1f5b9e 110 #ifdef __CMSIS_RTOS
mecatro_prod 0:4a2c9c1f5b9e 111 rt_ret_val2(p_tcb, 0x08/*osEventSignal*/, p_tcb->waits);
mecatro_prod 0:4a2c9c1f5b9e 112 #else
mecatro_prod 0:4a2c9c1f5b9e 113 rt_ret_val (p_tcb, OS_R_EVT);
mecatro_prod 0:4a2c9c1f5b9e 114 #endif
mecatro_prod 0:4a2c9c1f5b9e 115 rt_dispatch (p_tcb);
mecatro_prod 0:4a2c9c1f5b9e 116 }
mecatro_prod 0:4a2c9c1f5b9e 117 }
mecatro_prod 0:4a2c9c1f5b9e 118 }
mecatro_prod 0:4a2c9c1f5b9e 119
mecatro_prod 0:4a2c9c1f5b9e 120
mecatro_prod 0:4a2c9c1f5b9e 121 /*--------------------------- rt_evt_clr ------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 122
mecatro_prod 0:4a2c9c1f5b9e 123 void rt_evt_clr (U16 clear_flags, OS_TID task_id) {
mecatro_prod 0:4a2c9c1f5b9e 124 /* Clear one or more event flags (identified by "clear_flags") of a */
mecatro_prod 0:4a2c9c1f5b9e 125 /* selectable task (identified by "task"). */
mecatro_prod 0:4a2c9c1f5b9e 126 P_TCB task = os_active_TCB[task_id-1];
mecatro_prod 0:4a2c9c1f5b9e 127
mecatro_prod 0:4a2c9c1f5b9e 128 if (task == NULL) {
mecatro_prod 0:4a2c9c1f5b9e 129 return;
mecatro_prod 0:4a2c9c1f5b9e 130 }
mecatro_prod 0:4a2c9c1f5b9e 131 task->events &= ~clear_flags;
mecatro_prod 0:4a2c9c1f5b9e 132 }
mecatro_prod 0:4a2c9c1f5b9e 133
mecatro_prod 0:4a2c9c1f5b9e 134
mecatro_prod 0:4a2c9c1f5b9e 135 /*--------------------------- isr_evt_set -----------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 136
mecatro_prod 0:4a2c9c1f5b9e 137 void isr_evt_set (U16 event_flags, OS_TID task_id) {
mecatro_prod 0:4a2c9c1f5b9e 138 /* Same function as "os_evt_set", but to be called by ISRs. */
mecatro_prod 0:4a2c9c1f5b9e 139 P_TCB p_tcb = os_active_TCB[task_id-1];
mecatro_prod 0:4a2c9c1f5b9e 140
mecatro_prod 0:4a2c9c1f5b9e 141 if (p_tcb == NULL) {
mecatro_prod 0:4a2c9c1f5b9e 142 return;
mecatro_prod 0:4a2c9c1f5b9e 143 }
mecatro_prod 0:4a2c9c1f5b9e 144 rt_psq_enq (p_tcb, event_flags);
mecatro_prod 0:4a2c9c1f5b9e 145 rt_psh_req ();
mecatro_prod 0:4a2c9c1f5b9e 146 }
mecatro_prod 0:4a2c9c1f5b9e 147
mecatro_prod 0:4a2c9c1f5b9e 148
mecatro_prod 0:4a2c9c1f5b9e 149 /*--------------------------- rt_evt_get ------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 150
mecatro_prod 0:4a2c9c1f5b9e 151 U16 rt_evt_get (void) {
mecatro_prod 0:4a2c9c1f5b9e 152 /* Get events of a running task after waiting for OR connected events. */
mecatro_prod 0:4a2c9c1f5b9e 153 return (os_tsk.run->waits);
mecatro_prod 0:4a2c9c1f5b9e 154 }
mecatro_prod 0:4a2c9c1f5b9e 155
mecatro_prod 0:4a2c9c1f5b9e 156
mecatro_prod 0:4a2c9c1f5b9e 157 /*--------------------------- rt_evt_psh ------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 158
mecatro_prod 0:4a2c9c1f5b9e 159 void rt_evt_psh (P_TCB p_CB, U16 set_flags) {
mecatro_prod 0:4a2c9c1f5b9e 160 /* Check if task has to be waken up */
mecatro_prod 0:4a2c9c1f5b9e 161 U16 event_flags;
mecatro_prod 0:4a2c9c1f5b9e 162
mecatro_prod 0:4a2c9c1f5b9e 163 p_CB->events |= set_flags;
mecatro_prod 0:4a2c9c1f5b9e 164 event_flags = p_CB->waits;
mecatro_prod 0:4a2c9c1f5b9e 165 if (p_CB->state == WAIT_AND) {
mecatro_prod 0:4a2c9c1f5b9e 166 /* Check for AND-connected events */
mecatro_prod 0:4a2c9c1f5b9e 167 if ((p_CB->events & event_flags) == event_flags) {
mecatro_prod 0:4a2c9c1f5b9e 168 goto rdy;
mecatro_prod 0:4a2c9c1f5b9e 169 }
mecatro_prod 0:4a2c9c1f5b9e 170 }
mecatro_prod 0:4a2c9c1f5b9e 171 if (p_CB->state == WAIT_OR) {
mecatro_prod 0:4a2c9c1f5b9e 172 /* Check for OR-connected events */
mecatro_prod 0:4a2c9c1f5b9e 173 if (p_CB->events & event_flags) {
mecatro_prod 0:4a2c9c1f5b9e 174 p_CB->waits &= p_CB->events;
mecatro_prod 0:4a2c9c1f5b9e 175 rdy: p_CB->events &= ~event_flags;
mecatro_prod 0:4a2c9c1f5b9e 176 rt_rmv_dly (p_CB);
mecatro_prod 0:4a2c9c1f5b9e 177 p_CB->state = READY;
mecatro_prod 0:4a2c9c1f5b9e 178 #ifdef __CMSIS_RTOS
mecatro_prod 0:4a2c9c1f5b9e 179 rt_ret_val2(p_CB, 0x08/*osEventSignal*/, p_CB->waits);
mecatro_prod 0:4a2c9c1f5b9e 180 #else
mecatro_prod 0:4a2c9c1f5b9e 181 rt_ret_val (p_CB, OS_R_EVT);
mecatro_prod 0:4a2c9c1f5b9e 182 #endif
mecatro_prod 0:4a2c9c1f5b9e 183 rt_put_prio (&os_rdy, p_CB);
mecatro_prod 0:4a2c9c1f5b9e 184 }
mecatro_prod 0:4a2c9c1f5b9e 185 }
mecatro_prod 0:4a2c9c1f5b9e 186 }
mecatro_prod 0:4a2c9c1f5b9e 187
mecatro_prod 0:4a2c9c1f5b9e 188 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 189 * end of file
mecatro_prod 0:4a2c9c1f5b9e 190 *---------------------------------------------------------------------------*/