Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbed-rtos/rtx/TARGET_ARM7/rt_Event.c@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 2 * RL-ARM - RTX
mbedAustin 11:cada08fc8a70 3 *----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 4 * Name: RT_EVENT.C
mbedAustin 11:cada08fc8a70 5 * Purpose: Implements waits and wake-ups for event flags
mbedAustin 11:cada08fc8a70 6 * Rev.: V4.60
mbedAustin 11:cada08fc8a70 7 *----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 8 *
mbedAustin 11:cada08fc8a70 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
mbedAustin 11:cada08fc8a70 10 * All rights reserved.
mbedAustin 11:cada08fc8a70 11 * Redistribution and use in source and binary forms, with or without
mbedAustin 11:cada08fc8a70 12 * modification, are permitted provided that the following conditions are met:
mbedAustin 11:cada08fc8a70 13 * - Redistributions of source code must retain the above copyright
mbedAustin 11:cada08fc8a70 14 * notice, this list of conditions and the following disclaimer.
mbedAustin 11:cada08fc8a70 15 * - Redistributions in binary form must reproduce the above copyright
mbedAustin 11:cada08fc8a70 16 * notice, this list of conditions and the following disclaimer in the
mbedAustin 11:cada08fc8a70 17 * documentation and/or other materials provided with the distribution.
mbedAustin 11:cada08fc8a70 18 * - Neither the name of ARM nor the names of its contributors may be used
mbedAustin 11:cada08fc8a70 19 * to endorse or promote products derived from this software without
mbedAustin 11:cada08fc8a70 20 * specific prior written permission.
mbedAustin 11:cada08fc8a70 21 *
mbedAustin 11:cada08fc8a70 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbedAustin 11:cada08fc8a70 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbedAustin 11:cada08fc8a70 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbedAustin 11:cada08fc8a70 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbedAustin 11:cada08fc8a70 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbedAustin 11:cada08fc8a70 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbedAustin 11:cada08fc8a70 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbedAustin 11:cada08fc8a70 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbedAustin 11:cada08fc8a70 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbedAustin 11:cada08fc8a70 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbedAustin 11:cada08fc8a70 32 * POSSIBILITY OF SUCH DAMAGE.
mbedAustin 11:cada08fc8a70 33 *---------------------------------------------------------------------------*/
mbedAustin 11:cada08fc8a70 34
mbedAustin 11:cada08fc8a70 35 #include "rt_TypeDef.h"
mbedAustin 11:cada08fc8a70 36 #include "RTX_Conf.h"
mbedAustin 11:cada08fc8a70 37 #include "rt_System.h"
mbedAustin 11:cada08fc8a70 38 #include "rt_Event.h"
mbedAustin 11:cada08fc8a70 39 #include "rt_List.h"
mbedAustin 11:cada08fc8a70 40 #include "rt_Task.h"
mbedAustin 11:cada08fc8a70 41 #include "rt_HAL_CM.h"
mbedAustin 11:cada08fc8a70 42
mbedAustin 11:cada08fc8a70 43
mbedAustin 11:cada08fc8a70 44 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 45 * Functions
mbedAustin 11:cada08fc8a70 46 *---------------------------------------------------------------------------*/
mbedAustin 11:cada08fc8a70 47
mbedAustin 11:cada08fc8a70 48
mbedAustin 11:cada08fc8a70 49 /*--------------------------- rt_evt_wait -----------------------------------*/
mbedAustin 11:cada08fc8a70 50
mbedAustin 11:cada08fc8a70 51 OS_RESULT rt_evt_wait (U16 wait_flags, U16 timeout, BOOL and_wait) {
mbedAustin 11:cada08fc8a70 52 /* Wait for one or more event flags with optional time-out. */
mbedAustin 11:cada08fc8a70 53 /* "wait_flags" identifies the flags to wait for. */
mbedAustin 11:cada08fc8a70 54 /* "timeout" is the time-out limit in system ticks (0xffff if no time-out) */
mbedAustin 11:cada08fc8a70 55 /* "and_wait" specifies the AND-ing of "wait_flags" as condition to be met */
mbedAustin 11:cada08fc8a70 56 /* to complete the wait. (OR-ing if set to 0). */
mbedAustin 11:cada08fc8a70 57 U32 block_state;
mbedAustin 11:cada08fc8a70 58
mbedAustin 11:cada08fc8a70 59 if (and_wait) {
mbedAustin 11:cada08fc8a70 60 /* Check for AND-connected events */
mbedAustin 11:cada08fc8a70 61 if ((os_tsk.run->events & wait_flags) == wait_flags) {
mbedAustin 11:cada08fc8a70 62 os_tsk.run->events &= ~wait_flags;
mbedAustin 11:cada08fc8a70 63 return (OS_R_EVT);
mbedAustin 11:cada08fc8a70 64 }
mbedAustin 11:cada08fc8a70 65 block_state = WAIT_AND;
mbedAustin 11:cada08fc8a70 66 }
mbedAustin 11:cada08fc8a70 67 else {
mbedAustin 11:cada08fc8a70 68 /* Check for OR-connected events */
mbedAustin 11:cada08fc8a70 69 if (os_tsk.run->events & wait_flags) {
mbedAustin 11:cada08fc8a70 70 os_tsk.run->waits = os_tsk.run->events & wait_flags;
mbedAustin 11:cada08fc8a70 71 os_tsk.run->events &= ~wait_flags;
mbedAustin 11:cada08fc8a70 72 return (OS_R_EVT);
mbedAustin 11:cada08fc8a70 73 }
mbedAustin 11:cada08fc8a70 74 block_state = WAIT_OR;
mbedAustin 11:cada08fc8a70 75 }
mbedAustin 11:cada08fc8a70 76 /* Task has to wait */
mbedAustin 11:cada08fc8a70 77 os_tsk.run->waits = wait_flags;
mbedAustin 11:cada08fc8a70 78 rt_block (timeout, (U8)block_state);
mbedAustin 11:cada08fc8a70 79 return (OS_R_TMO);
mbedAustin 11:cada08fc8a70 80 }
mbedAustin 11:cada08fc8a70 81
mbedAustin 11:cada08fc8a70 82
mbedAustin 11:cada08fc8a70 83 /*--------------------------- rt_evt_set ------------------------------------*/
mbedAustin 11:cada08fc8a70 84
mbedAustin 11:cada08fc8a70 85 void rt_evt_set (U16 event_flags, OS_TID task_id) {
mbedAustin 11:cada08fc8a70 86 /* Set one or more event flags of a selectable task. */
mbedAustin 11:cada08fc8a70 87 P_TCB p_tcb;
mbedAustin 11:cada08fc8a70 88
mbedAustin 11:cada08fc8a70 89 p_tcb = os_active_TCB[task_id-1];
mbedAustin 11:cada08fc8a70 90 if (p_tcb == NULL) {
mbedAustin 11:cada08fc8a70 91 return;
mbedAustin 11:cada08fc8a70 92 }
mbedAustin 11:cada08fc8a70 93 p_tcb->events |= event_flags;
mbedAustin 11:cada08fc8a70 94 event_flags = p_tcb->waits;
mbedAustin 11:cada08fc8a70 95 /* If the task is not waiting for an event, it should not be put */
mbedAustin 11:cada08fc8a70 96 /* to ready state. */
mbedAustin 11:cada08fc8a70 97 if (p_tcb->state == WAIT_AND) {
mbedAustin 11:cada08fc8a70 98 /* Check for AND-connected events */
mbedAustin 11:cada08fc8a70 99 if ((p_tcb->events & event_flags) == event_flags) {
mbedAustin 11:cada08fc8a70 100 goto wkup;
mbedAustin 11:cada08fc8a70 101 }
mbedAustin 11:cada08fc8a70 102 }
mbedAustin 11:cada08fc8a70 103 if (p_tcb->state == WAIT_OR) {
mbedAustin 11:cada08fc8a70 104 /* Check for OR-connected events */
mbedAustin 11:cada08fc8a70 105 if (p_tcb->events & event_flags) {
mbedAustin 11:cada08fc8a70 106 p_tcb->waits &= p_tcb->events;
mbedAustin 11:cada08fc8a70 107 wkup: p_tcb->events &= ~event_flags;
mbedAustin 11:cada08fc8a70 108 rt_rmv_dly (p_tcb);
mbedAustin 11:cada08fc8a70 109 p_tcb->state = READY;
mbedAustin 11:cada08fc8a70 110 #ifdef __CMSIS_RTOS
mbedAustin 11:cada08fc8a70 111 rt_ret_val2(p_tcb, 0x08/*osEventSignal*/, p_tcb->waits);
mbedAustin 11:cada08fc8a70 112 #else
mbedAustin 11:cada08fc8a70 113 rt_ret_val (p_tcb, OS_R_EVT);
mbedAustin 11:cada08fc8a70 114 #endif
mbedAustin 11:cada08fc8a70 115 rt_dispatch (p_tcb);
mbedAustin 11:cada08fc8a70 116 }
mbedAustin 11:cada08fc8a70 117 }
mbedAustin 11:cada08fc8a70 118 }
mbedAustin 11:cada08fc8a70 119
mbedAustin 11:cada08fc8a70 120
mbedAustin 11:cada08fc8a70 121 /*--------------------------- rt_evt_clr ------------------------------------*/
mbedAustin 11:cada08fc8a70 122
mbedAustin 11:cada08fc8a70 123 void rt_evt_clr (U16 clear_flags, OS_TID task_id) {
mbedAustin 11:cada08fc8a70 124 /* Clear one or more event flags (identified by "clear_flags") of a */
mbedAustin 11:cada08fc8a70 125 /* selectable task (identified by "task"). */
mbedAustin 11:cada08fc8a70 126 P_TCB task = os_active_TCB[task_id-1];
mbedAustin 11:cada08fc8a70 127
mbedAustin 11:cada08fc8a70 128 if (task == NULL) {
mbedAustin 11:cada08fc8a70 129 return;
mbedAustin 11:cada08fc8a70 130 }
mbedAustin 11:cada08fc8a70 131 task->events &= ~clear_flags;
mbedAustin 11:cada08fc8a70 132 }
mbedAustin 11:cada08fc8a70 133
mbedAustin 11:cada08fc8a70 134
mbedAustin 11:cada08fc8a70 135 /*--------------------------- isr_evt_set -----------------------------------*/
mbedAustin 11:cada08fc8a70 136
mbedAustin 11:cada08fc8a70 137 void isr_evt_set (U16 event_flags, OS_TID task_id) {
mbedAustin 11:cada08fc8a70 138 /* Same function as "os_evt_set", but to be called by ISRs. */
mbedAustin 11:cada08fc8a70 139 P_TCB p_tcb = os_active_TCB[task_id-1];
mbedAustin 11:cada08fc8a70 140
mbedAustin 11:cada08fc8a70 141 if (p_tcb == NULL) {
mbedAustin 11:cada08fc8a70 142 return;
mbedAustin 11:cada08fc8a70 143 }
mbedAustin 11:cada08fc8a70 144 rt_psq_enq (p_tcb, event_flags);
mbedAustin 11:cada08fc8a70 145 rt_psh_req ();
mbedAustin 11:cada08fc8a70 146 }
mbedAustin 11:cada08fc8a70 147
mbedAustin 11:cada08fc8a70 148
mbedAustin 11:cada08fc8a70 149 /*--------------------------- rt_evt_get ------------------------------------*/
mbedAustin 11:cada08fc8a70 150
mbedAustin 11:cada08fc8a70 151 U16 rt_evt_get (void) {
mbedAustin 11:cada08fc8a70 152 /* Get events of a running task after waiting for OR connected events. */
mbedAustin 11:cada08fc8a70 153 return (os_tsk.run->waits);
mbedAustin 11:cada08fc8a70 154 }
mbedAustin 11:cada08fc8a70 155
mbedAustin 11:cada08fc8a70 156
mbedAustin 11:cada08fc8a70 157 /*--------------------------- rt_evt_psh ------------------------------------*/
mbedAustin 11:cada08fc8a70 158
mbedAustin 11:cada08fc8a70 159 void rt_evt_psh (P_TCB p_CB, U16 set_flags) {
mbedAustin 11:cada08fc8a70 160 /* Check if task has to be waken up */
mbedAustin 11:cada08fc8a70 161 U16 event_flags;
mbedAustin 11:cada08fc8a70 162
mbedAustin 11:cada08fc8a70 163 p_CB->events |= set_flags;
mbedAustin 11:cada08fc8a70 164 event_flags = p_CB->waits;
mbedAustin 11:cada08fc8a70 165 if (p_CB->state == WAIT_AND) {
mbedAustin 11:cada08fc8a70 166 /* Check for AND-connected events */
mbedAustin 11:cada08fc8a70 167 if ((p_CB->events & event_flags) == event_flags) {
mbedAustin 11:cada08fc8a70 168 goto rdy;
mbedAustin 11:cada08fc8a70 169 }
mbedAustin 11:cada08fc8a70 170 }
mbedAustin 11:cada08fc8a70 171 if (p_CB->state == WAIT_OR) {
mbedAustin 11:cada08fc8a70 172 /* Check for OR-connected events */
mbedAustin 11:cada08fc8a70 173 if (p_CB->events & event_flags) {
mbedAustin 11:cada08fc8a70 174 p_CB->waits &= p_CB->events;
mbedAustin 11:cada08fc8a70 175 rdy: p_CB->events &= ~event_flags;
mbedAustin 11:cada08fc8a70 176 rt_rmv_dly (p_CB);
mbedAustin 11:cada08fc8a70 177 p_CB->state = READY;
mbedAustin 11:cada08fc8a70 178 #ifdef __CMSIS_RTOS
mbedAustin 11:cada08fc8a70 179 rt_ret_val2(p_CB, 0x08/*osEventSignal*/, p_CB->waits);
mbedAustin 11:cada08fc8a70 180 #else
mbedAustin 11:cada08fc8a70 181 rt_ret_val (p_CB, OS_R_EVT);
mbedAustin 11:cada08fc8a70 182 #endif
mbedAustin 11:cada08fc8a70 183 rt_put_prio (&os_rdy, p_CB);
mbedAustin 11:cada08fc8a70 184 }
mbedAustin 11:cada08fc8a70 185 }
mbedAustin 11:cada08fc8a70 186 }
mbedAustin 11:cada08fc8a70 187
mbedAustin 11:cada08fc8a70 188 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 189 * end of file
mbedAustin 11:cada08fc8a70 190 *---------------------------------------------------------------------------*/