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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_CORTEX_A/rt_Event.c@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 2 * RL-ARM - RTX
DieterGraef 0:f9b6112278fe 3 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 4 * Name: RT_EVENT.C
DieterGraef 0:f9b6112278fe 5 * Purpose: Implements waits and wake-ups for event flags
DieterGraef 0:f9b6112278fe 6 * Rev.: V4.70
DieterGraef 0:f9b6112278fe 7 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 8 *
DieterGraef 0:f9b6112278fe 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH
DieterGraef 0:f9b6112278fe 10 * All rights reserved.
DieterGraef 0:f9b6112278fe 11 * Redistribution and use in source and binary forms, with or without
DieterGraef 0:f9b6112278fe 12 * modification, are permitted provided that the following conditions are met:
DieterGraef 0:f9b6112278fe 13 * - Redistributions of source code must retain the above copyright
DieterGraef 0:f9b6112278fe 14 * notice, this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 15 * - Redistributions in binary form must reproduce the above copyright
DieterGraef 0:f9b6112278fe 16 * notice, this list of conditions and the following disclaimer in the
DieterGraef 0:f9b6112278fe 17 * documentation and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 18 * - Neither the name of ARM nor the names of its contributors may be used
DieterGraef 0:f9b6112278fe 19 * to endorse or promote products derived from this software without
DieterGraef 0:f9b6112278fe 20 * specific prior written permission.
DieterGraef 0:f9b6112278fe 21 *
DieterGraef 0:f9b6112278fe 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
DieterGraef 0:f9b6112278fe 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
DieterGraef 0:f9b6112278fe 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
DieterGraef 0:f9b6112278fe 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
DieterGraef 0:f9b6112278fe 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
DieterGraef 0:f9b6112278fe 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
DieterGraef 0:f9b6112278fe 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
DieterGraef 0:f9b6112278fe 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
DieterGraef 0:f9b6112278fe 32 * POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 33 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 #include "rt_TypeDef.h"
DieterGraef 0:f9b6112278fe 36 #include "RTX_Config.h"
DieterGraef 0:f9b6112278fe 37 #include "rt_System.h"
DieterGraef 0:f9b6112278fe 38 #include "rt_Event.h"
DieterGraef 0:f9b6112278fe 39 #include "rt_List.h"
DieterGraef 0:f9b6112278fe 40 #include "rt_Task.h"
DieterGraef 0:f9b6112278fe 41 #ifdef __CORTEX_A9
DieterGraef 0:f9b6112278fe 42 #include "rt_HAL_CA.h"
DieterGraef 0:f9b6112278fe 43 #else
DieterGraef 0:f9b6112278fe 44 #include "rt_HAL_CM.h"
DieterGraef 0:f9b6112278fe 45 #endif
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47
DieterGraef 0:f9b6112278fe 48 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 49 * Functions
DieterGraef 0:f9b6112278fe 50 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 51
DieterGraef 0:f9b6112278fe 52
DieterGraef 0:f9b6112278fe 53 /*--------------------------- rt_evt_wait -----------------------------------*/
DieterGraef 0:f9b6112278fe 54
DieterGraef 0:f9b6112278fe 55 OS_RESULT rt_evt_wait (U16 wait_flags, U16 timeout, BOOL and_wait) {
DieterGraef 0:f9b6112278fe 56 /* Wait for one or more event flags with optional time-out. */
DieterGraef 0:f9b6112278fe 57 /* "wait_flags" identifies the flags to wait for. */
DieterGraef 0:f9b6112278fe 58 /* "timeout" is the time-out limit in system ticks (0xffff if no time-out) */
DieterGraef 0:f9b6112278fe 59 /* "and_wait" specifies the AND-ing of "wait_flags" as condition to be met */
DieterGraef 0:f9b6112278fe 60 /* to complete the wait. (OR-ing if set to 0). */
DieterGraef 0:f9b6112278fe 61 U32 block_state;
DieterGraef 0:f9b6112278fe 62
DieterGraef 0:f9b6112278fe 63 if (and_wait) {
DieterGraef 0:f9b6112278fe 64 /* Check for AND-connected events */
DieterGraef 0:f9b6112278fe 65 if ((os_tsk.run->events & wait_flags) == wait_flags) {
DieterGraef 0:f9b6112278fe 66 os_tsk.run->events &= ~wait_flags;
DieterGraef 0:f9b6112278fe 67 return (OS_R_EVT);
DieterGraef 0:f9b6112278fe 68 }
DieterGraef 0:f9b6112278fe 69 block_state = WAIT_AND;
DieterGraef 0:f9b6112278fe 70 }
DieterGraef 0:f9b6112278fe 71 else {
DieterGraef 0:f9b6112278fe 72 /* Check for OR-connected events */
DieterGraef 0:f9b6112278fe 73 if (os_tsk.run->events & wait_flags) {
DieterGraef 0:f9b6112278fe 74 os_tsk.run->waits = os_tsk.run->events & wait_flags;
DieterGraef 0:f9b6112278fe 75 os_tsk.run->events &= ~wait_flags;
DieterGraef 0:f9b6112278fe 76 return (OS_R_EVT);
DieterGraef 0:f9b6112278fe 77 }
DieterGraef 0:f9b6112278fe 78 block_state = WAIT_OR;
DieterGraef 0:f9b6112278fe 79 }
DieterGraef 0:f9b6112278fe 80 /* Task has to wait */
DieterGraef 0:f9b6112278fe 81 os_tsk.run->waits = wait_flags;
DieterGraef 0:f9b6112278fe 82 rt_block (timeout, (U8)block_state);
DieterGraef 0:f9b6112278fe 83 return (OS_R_TMO);
DieterGraef 0:f9b6112278fe 84 }
DieterGraef 0:f9b6112278fe 85
DieterGraef 0:f9b6112278fe 86
DieterGraef 0:f9b6112278fe 87 /*--------------------------- rt_evt_set ------------------------------------*/
DieterGraef 0:f9b6112278fe 88
DieterGraef 0:f9b6112278fe 89 void rt_evt_set (U16 event_flags, OS_TID task_id) {
DieterGraef 0:f9b6112278fe 90 /* Set one or more event flags of a selectable task. */
DieterGraef 0:f9b6112278fe 91 P_TCB p_tcb;
DieterGraef 0:f9b6112278fe 92
DieterGraef 0:f9b6112278fe 93 p_tcb = os_active_TCB[task_id-1];
DieterGraef 0:f9b6112278fe 94 if (p_tcb == NULL) {
DieterGraef 0:f9b6112278fe 95 return;
DieterGraef 0:f9b6112278fe 96 }
DieterGraef 0:f9b6112278fe 97 p_tcb->events |= event_flags;
DieterGraef 0:f9b6112278fe 98 event_flags = p_tcb->waits;
DieterGraef 0:f9b6112278fe 99 /* If the task is not waiting for an event, it should not be put */
DieterGraef 0:f9b6112278fe 100 /* to ready state. */
DieterGraef 0:f9b6112278fe 101 if (p_tcb->state == WAIT_AND) {
DieterGraef 0:f9b6112278fe 102 /* Check for AND-connected events */
DieterGraef 0:f9b6112278fe 103 if ((p_tcb->events & event_flags) == event_flags) {
DieterGraef 0:f9b6112278fe 104 goto wkup;
DieterGraef 0:f9b6112278fe 105 }
DieterGraef 0:f9b6112278fe 106 }
DieterGraef 0:f9b6112278fe 107 if (p_tcb->state == WAIT_OR) {
DieterGraef 0:f9b6112278fe 108 /* Check for OR-connected events */
DieterGraef 0:f9b6112278fe 109 if (p_tcb->events & event_flags) {
DieterGraef 0:f9b6112278fe 110 p_tcb->waits &= p_tcb->events;
DieterGraef 0:f9b6112278fe 111 wkup: p_tcb->events &= ~event_flags;
DieterGraef 0:f9b6112278fe 112 rt_rmv_dly (p_tcb);
DieterGraef 0:f9b6112278fe 113 p_tcb->state = READY;
DieterGraef 0:f9b6112278fe 114 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 115 rt_ret_val2(p_tcb, 0x08/*osEventSignal*/, p_tcb->waits);
DieterGraef 0:f9b6112278fe 116 #else
DieterGraef 0:f9b6112278fe 117 rt_ret_val (p_tcb, OS_R_EVT);
DieterGraef 0:f9b6112278fe 118 #endif
DieterGraef 0:f9b6112278fe 119 rt_dispatch (p_tcb);
DieterGraef 0:f9b6112278fe 120 }
DieterGraef 0:f9b6112278fe 121 }
DieterGraef 0:f9b6112278fe 122 }
DieterGraef 0:f9b6112278fe 123
DieterGraef 0:f9b6112278fe 124
DieterGraef 0:f9b6112278fe 125 /*--------------------------- rt_evt_clr ------------------------------------*/
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 void rt_evt_clr (U16 clear_flags, OS_TID task_id) {
DieterGraef 0:f9b6112278fe 128 /* Clear one or more event flags (identified by "clear_flags") of a */
DieterGraef 0:f9b6112278fe 129 /* selectable task (identified by "task"). */
DieterGraef 0:f9b6112278fe 130 P_TCB task = os_active_TCB[task_id-1];
DieterGraef 0:f9b6112278fe 131
DieterGraef 0:f9b6112278fe 132 if (task == NULL) {
DieterGraef 0:f9b6112278fe 133 return;
DieterGraef 0:f9b6112278fe 134 }
DieterGraef 0:f9b6112278fe 135 task->events &= ~clear_flags;
DieterGraef 0:f9b6112278fe 136 }
DieterGraef 0:f9b6112278fe 137
DieterGraef 0:f9b6112278fe 138
DieterGraef 0:f9b6112278fe 139 /*--------------------------- isr_evt_set -----------------------------------*/
DieterGraef 0:f9b6112278fe 140
DieterGraef 0:f9b6112278fe 141 void isr_evt_set (U16 event_flags, OS_TID task_id) {
DieterGraef 0:f9b6112278fe 142 /* Same function as "os_evt_set", but to be called by ISRs. */
DieterGraef 0:f9b6112278fe 143 P_TCB p_tcb = os_active_TCB[task_id-1];
DieterGraef 0:f9b6112278fe 144
DieterGraef 0:f9b6112278fe 145 if (p_tcb == NULL) {
DieterGraef 0:f9b6112278fe 146 return;
DieterGraef 0:f9b6112278fe 147 }
DieterGraef 0:f9b6112278fe 148 rt_psq_enq (p_tcb, event_flags);
DieterGraef 0:f9b6112278fe 149 rt_psh_req ();
DieterGraef 0:f9b6112278fe 150 }
DieterGraef 0:f9b6112278fe 151
DieterGraef 0:f9b6112278fe 152
DieterGraef 0:f9b6112278fe 153 /*--------------------------- rt_evt_get ------------------------------------*/
DieterGraef 0:f9b6112278fe 154
DieterGraef 0:f9b6112278fe 155 U16 rt_evt_get (void) {
DieterGraef 0:f9b6112278fe 156 /* Get events of a running task after waiting for OR connected events. */
DieterGraef 0:f9b6112278fe 157 return (os_tsk.run->waits);
DieterGraef 0:f9b6112278fe 158 }
DieterGraef 0:f9b6112278fe 159
DieterGraef 0:f9b6112278fe 160
DieterGraef 0:f9b6112278fe 161 /*--------------------------- rt_evt_psh ------------------------------------*/
DieterGraef 0:f9b6112278fe 162
DieterGraef 0:f9b6112278fe 163 void rt_evt_psh (P_TCB p_CB, U16 set_flags) {
DieterGraef 0:f9b6112278fe 164 /* Check if task has to be waken up */
DieterGraef 0:f9b6112278fe 165 U16 event_flags;
DieterGraef 0:f9b6112278fe 166
DieterGraef 0:f9b6112278fe 167 p_CB->events |= set_flags;
DieterGraef 0:f9b6112278fe 168 event_flags = p_CB->waits;
DieterGraef 0:f9b6112278fe 169 if (p_CB->state == WAIT_AND) {
DieterGraef 0:f9b6112278fe 170 /* Check for AND-connected events */
DieterGraef 0:f9b6112278fe 171 if ((p_CB->events & event_flags) == event_flags) {
DieterGraef 0:f9b6112278fe 172 goto rdy;
DieterGraef 0:f9b6112278fe 173 }
DieterGraef 0:f9b6112278fe 174 }
DieterGraef 0:f9b6112278fe 175 if (p_CB->state == WAIT_OR) {
DieterGraef 0:f9b6112278fe 176 /* Check for OR-connected events */
DieterGraef 0:f9b6112278fe 177 if (p_CB->events & event_flags) {
DieterGraef 0:f9b6112278fe 178 p_CB->waits &= p_CB->events;
DieterGraef 0:f9b6112278fe 179 rdy: p_CB->events &= ~event_flags;
DieterGraef 0:f9b6112278fe 180 rt_rmv_dly (p_CB);
DieterGraef 0:f9b6112278fe 181 p_CB->state = READY;
DieterGraef 0:f9b6112278fe 182 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 183 rt_ret_val2(p_CB, 0x08/*osEventSignal*/, p_CB->waits);
DieterGraef 0:f9b6112278fe 184 #else
DieterGraef 0:f9b6112278fe 185 rt_ret_val (p_CB, OS_R_EVT);
DieterGraef 0:f9b6112278fe 186 #endif
DieterGraef 0:f9b6112278fe 187 rt_put_prio (&os_rdy, p_CB);
DieterGraef 0:f9b6112278fe 188 }
DieterGraef 0:f9b6112278fe 189 }
DieterGraef 0:f9b6112278fe 190 }
DieterGraef 0:f9b6112278fe 191
DieterGraef 0:f9b6112278fe 192 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 193 * end of file
DieterGraef 0:f9b6112278fe 194 *---------------------------------------------------------------------------*/