Freeman Oldman / NUCLEO_STM32F401RE_CC3000_ILI9341

The code from https://github.com/vpcola/Nucleo

mbed-rtos/rtx/rt_Event.c@0:5464d5e415e5, 2014-10-08 (annotated)

Committer:
sinrab
Date:
Wed Oct 08 11:00:24 2014 +0000
Revision:
0:5464d5e415e5
The code from https://github.com/vpcola/Nucleo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sinrab 0:5464d5e415e5 1 /*----------------------------------------------------------------------------
sinrab 0:5464d5e415e5 2 * RL-ARM - RTX
sinrab 0:5464d5e415e5 3 *----------------------------------------------------------------------------
sinrab 0:5464d5e415e5 4 * Name: RT_EVENT.C
sinrab 0:5464d5e415e5 5 * Purpose: Implements waits and wake-ups for event flags
sinrab 0:5464d5e415e5 6 * Rev.: V4.60
sinrab 0:5464d5e415e5 7 *----------------------------------------------------------------------------
sinrab 0:5464d5e415e5 8 *
sinrab 0:5464d5e415e5 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
sinrab 0:5464d5e415e5 10 * All rights reserved.
sinrab 0:5464d5e415e5 11 * Redistribution and use in source and binary forms, with or without
sinrab 0:5464d5e415e5 12 * modification, are permitted provided that the following conditions are met:
sinrab 0:5464d5e415e5 13 * - Redistributions of source code must retain the above copyright
sinrab 0:5464d5e415e5 14 * notice, this list of conditions and the following disclaimer.
sinrab 0:5464d5e415e5 15 * - Redistributions in binary form must reproduce the above copyright
sinrab 0:5464d5e415e5 16 * notice, this list of conditions and the following disclaimer in the
sinrab 0:5464d5e415e5 17 * documentation and/or other materials provided with the distribution.
sinrab 0:5464d5e415e5 18 * - Neither the name of ARM nor the names of its contributors may be used
sinrab 0:5464d5e415e5 19 * to endorse or promote products derived from this software without
sinrab 0:5464d5e415e5 20 * specific prior written permission.
sinrab 0:5464d5e415e5 21 *
sinrab 0:5464d5e415e5 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
sinrab 0:5464d5e415e5 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sinrab 0:5464d5e415e5 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sinrab 0:5464d5e415e5 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
sinrab 0:5464d5e415e5 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
sinrab 0:5464d5e415e5 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
sinrab 0:5464d5e415e5 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
sinrab 0:5464d5e415e5 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
sinrab 0:5464d5e415e5 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sinrab 0:5464d5e415e5 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
sinrab 0:5464d5e415e5 32 * POSSIBILITY OF SUCH DAMAGE.
sinrab 0:5464d5e415e5 33 *---------------------------------------------------------------------------*/
sinrab 0:5464d5e415e5 34
sinrab 0:5464d5e415e5 35 #include "rt_TypeDef.h"
sinrab 0:5464d5e415e5 36 #include "RTX_Conf.h"
sinrab 0:5464d5e415e5 37 #include "rt_System.h"
sinrab 0:5464d5e415e5 38 #include "rt_Event.h"
sinrab 0:5464d5e415e5 39 #include "rt_List.h"
sinrab 0:5464d5e415e5 40 #include "rt_Task.h"
sinrab 0:5464d5e415e5 41 #include "rt_HAL_CM.h"
sinrab 0:5464d5e415e5 42
sinrab 0:5464d5e415e5 43
sinrab 0:5464d5e415e5 44 /*----------------------------------------------------------------------------
sinrab 0:5464d5e415e5 45 * Functions
sinrab 0:5464d5e415e5 46 *---------------------------------------------------------------------------*/
sinrab 0:5464d5e415e5 47
sinrab 0:5464d5e415e5 48
sinrab 0:5464d5e415e5 49 /*--------------------------- rt_evt_wait -----------------------------------*/
sinrab 0:5464d5e415e5 50
sinrab 0:5464d5e415e5 51 OS_RESULT rt_evt_wait (U16 wait_flags, U16 timeout, BOOL and_wait) {
sinrab 0:5464d5e415e5 52 /* Wait for one or more event flags with optional time-out. */
sinrab 0:5464d5e415e5 53 /* "wait_flags" identifies the flags to wait for. */
sinrab 0:5464d5e415e5 54 /* "timeout" is the time-out limit in system ticks (0xffff if no time-out) */
sinrab 0:5464d5e415e5 55 /* "and_wait" specifies the AND-ing of "wait_flags" as condition to be met */
sinrab 0:5464d5e415e5 56 /* to complete the wait. (OR-ing if set to 0). */
sinrab 0:5464d5e415e5 57 U32 block_state;
sinrab 0:5464d5e415e5 58
sinrab 0:5464d5e415e5 59 if (and_wait) {
sinrab 0:5464d5e415e5 60 /* Check for AND-connected events */
sinrab 0:5464d5e415e5 61 if ((os_tsk.run->events & wait_flags) == wait_flags) {
sinrab 0:5464d5e415e5 62 os_tsk.run->events &= ~wait_flags;
sinrab 0:5464d5e415e5 63 return (OS_R_EVT);
sinrab 0:5464d5e415e5 64 }
sinrab 0:5464d5e415e5 65 block_state = WAIT_AND;
sinrab 0:5464d5e415e5 66 }
sinrab 0:5464d5e415e5 67 else {
sinrab 0:5464d5e415e5 68 /* Check for OR-connected events */
sinrab 0:5464d5e415e5 69 if (os_tsk.run->events & wait_flags) {
sinrab 0:5464d5e415e5 70 os_tsk.run->waits = os_tsk.run->events & wait_flags;
sinrab 0:5464d5e415e5 71 os_tsk.run->events &= ~wait_flags;
sinrab 0:5464d5e415e5 72 return (OS_R_EVT);
sinrab 0:5464d5e415e5 73 }
sinrab 0:5464d5e415e5 74 block_state = WAIT_OR;
sinrab 0:5464d5e415e5 75 }
sinrab 0:5464d5e415e5 76 /* Task has to wait */
sinrab 0:5464d5e415e5 77 os_tsk.run->waits = wait_flags;
sinrab 0:5464d5e415e5 78 rt_block (timeout, (U8)block_state);
sinrab 0:5464d5e415e5 79 return (OS_R_TMO);
sinrab 0:5464d5e415e5 80 }
sinrab 0:5464d5e415e5 81
sinrab 0:5464d5e415e5 82
sinrab 0:5464d5e415e5 83 /*--------------------------- rt_evt_set ------------------------------------*/
sinrab 0:5464d5e415e5 84
sinrab 0:5464d5e415e5 85 void rt_evt_set (U16 event_flags, OS_TID task_id) {
sinrab 0:5464d5e415e5 86 /* Set one or more event flags of a selectable task. */
sinrab 0:5464d5e415e5 87 P_TCB p_tcb;
sinrab 0:5464d5e415e5 88
sinrab 0:5464d5e415e5 89 p_tcb = os_active_TCB[task_id-1];
sinrab 0:5464d5e415e5 90 if (p_tcb == NULL) {
sinrab 0:5464d5e415e5 91 return;
sinrab 0:5464d5e415e5 92 }
sinrab 0:5464d5e415e5 93 p_tcb->events |= event_flags;
sinrab 0:5464d5e415e5 94 event_flags = p_tcb->waits;
sinrab 0:5464d5e415e5 95 /* If the task is not waiting for an event, it should not be put */
sinrab 0:5464d5e415e5 96 /* to ready state. */
sinrab 0:5464d5e415e5 97 if (p_tcb->state == WAIT_AND) {
sinrab 0:5464d5e415e5 98 /* Check for AND-connected events */
sinrab 0:5464d5e415e5 99 if ((p_tcb->events & event_flags) == event_flags) {
sinrab 0:5464d5e415e5 100 goto wkup;
sinrab 0:5464d5e415e5 101 }
sinrab 0:5464d5e415e5 102 }
sinrab 0:5464d5e415e5 103 if (p_tcb->state == WAIT_OR) {
sinrab 0:5464d5e415e5 104 /* Check for OR-connected events */
sinrab 0:5464d5e415e5 105 if (p_tcb->events & event_flags) {
sinrab 0:5464d5e415e5 106 p_tcb->waits &= p_tcb->events;
sinrab 0:5464d5e415e5 107 wkup: p_tcb->events &= ~event_flags;
sinrab 0:5464d5e415e5 108 rt_rmv_dly (p_tcb);
sinrab 0:5464d5e415e5 109 p_tcb->state = READY;
sinrab 0:5464d5e415e5 110 #ifdef __CMSIS_RTOS
sinrab 0:5464d5e415e5 111 rt_ret_val2(p_tcb, 0x08/*osEventSignal*/, p_tcb->waits);
sinrab 0:5464d5e415e5 112 #else
sinrab 0:5464d5e415e5 113 rt_ret_val (p_tcb, OS_R_EVT);
sinrab 0:5464d5e415e5 114 #endif
sinrab 0:5464d5e415e5 115 rt_dispatch (p_tcb);
sinrab 0:5464d5e415e5 116 }
sinrab 0:5464d5e415e5 117 }
sinrab 0:5464d5e415e5 118 }
sinrab 0:5464d5e415e5 119
sinrab 0:5464d5e415e5 120
sinrab 0:5464d5e415e5 121 /*--------------------------- rt_evt_clr ------------------------------------*/
sinrab 0:5464d5e415e5 122
sinrab 0:5464d5e415e5 123 void rt_evt_clr (U16 clear_flags, OS_TID task_id) {
sinrab 0:5464d5e415e5 124 /* Clear one or more event flags (identified by "clear_flags") of a */
sinrab 0:5464d5e415e5 125 /* selectable task (identified by "task"). */
sinrab 0:5464d5e415e5 126 P_TCB task = os_active_TCB[task_id-1];
sinrab 0:5464d5e415e5 127
sinrab 0:5464d5e415e5 128 if (task == NULL) {
sinrab 0:5464d5e415e5 129 return;
sinrab 0:5464d5e415e5 130 }
sinrab 0:5464d5e415e5 131 task->events &= ~clear_flags;
sinrab 0:5464d5e415e5 132 }
sinrab 0:5464d5e415e5 133
sinrab 0:5464d5e415e5 134
sinrab 0:5464d5e415e5 135 /*--------------------------- isr_evt_set -----------------------------------*/
sinrab 0:5464d5e415e5 136
sinrab 0:5464d5e415e5 137 void isr_evt_set (U16 event_flags, OS_TID task_id) {
sinrab 0:5464d5e415e5 138 /* Same function as "os_evt_set", but to be called by ISRs. */
sinrab 0:5464d5e415e5 139 P_TCB p_tcb = os_active_TCB[task_id-1];
sinrab 0:5464d5e415e5 140
sinrab 0:5464d5e415e5 141 if (p_tcb == NULL) {
sinrab 0:5464d5e415e5 142 return;
sinrab 0:5464d5e415e5 143 }
sinrab 0:5464d5e415e5 144 rt_psq_enq (p_tcb, event_flags);
sinrab 0:5464d5e415e5 145 rt_psh_req ();
sinrab 0:5464d5e415e5 146 }
sinrab 0:5464d5e415e5 147
sinrab 0:5464d5e415e5 148
sinrab 0:5464d5e415e5 149 /*--------------------------- rt_evt_get ------------------------------------*/
sinrab 0:5464d5e415e5 150
sinrab 0:5464d5e415e5 151 U16 rt_evt_get (void) {
sinrab 0:5464d5e415e5 152 /* Get events of a running task after waiting for OR connected events. */
sinrab 0:5464d5e415e5 153 return (os_tsk.run->waits);
sinrab 0:5464d5e415e5 154 }
sinrab 0:5464d5e415e5 155
sinrab 0:5464d5e415e5 156
sinrab 0:5464d5e415e5 157 /*--------------------------- rt_evt_psh ------------------------------------*/
sinrab 0:5464d5e415e5 158
sinrab 0:5464d5e415e5 159 void rt_evt_psh (P_TCB p_CB, U16 set_flags) {
sinrab 0:5464d5e415e5 160 /* Check if task has to be waken up */
sinrab 0:5464d5e415e5 161 U16 event_flags;
sinrab 0:5464d5e415e5 162
sinrab 0:5464d5e415e5 163 p_CB->events |= set_flags;
sinrab 0:5464d5e415e5 164 event_flags = p_CB->waits;
sinrab 0:5464d5e415e5 165 if (p_CB->state == WAIT_AND) {
sinrab 0:5464d5e415e5 166 /* Check for AND-connected events */
sinrab 0:5464d5e415e5 167 if ((p_CB->events & event_flags) == event_flags) {
sinrab 0:5464d5e415e5 168 goto rdy;
sinrab 0:5464d5e415e5 169 }
sinrab 0:5464d5e415e5 170 }
sinrab 0:5464d5e415e5 171 if (p_CB->state == WAIT_OR) {
sinrab 0:5464d5e415e5 172 /* Check for OR-connected events */
sinrab 0:5464d5e415e5 173 if (p_CB->events & event_flags) {
sinrab 0:5464d5e415e5 174 p_CB->waits &= p_CB->events;
sinrab 0:5464d5e415e5 175 rdy: p_CB->events &= ~event_flags;
sinrab 0:5464d5e415e5 176 rt_rmv_dly (p_CB);
sinrab 0:5464d5e415e5 177 p_CB->state = READY;
sinrab 0:5464d5e415e5 178 #ifdef __CMSIS_RTOS
sinrab 0:5464d5e415e5 179 rt_ret_val2(p_CB, 0x08/*osEventSignal*/, p_CB->waits);
sinrab 0:5464d5e415e5 180 #else
sinrab 0:5464d5e415e5 181 rt_ret_val (p_CB, OS_R_EVT);
sinrab 0:5464d5e415e5 182 #endif
sinrab 0:5464d5e415e5 183 rt_put_prio (&os_rdy, p_CB);
sinrab 0:5464d5e415e5 184 }
sinrab 0:5464d5e415e5 185 }
sinrab 0:5464d5e415e5 186 }
sinrab 0:5464d5e415e5 187
sinrab 0:5464d5e415e5 188 /*----------------------------------------------------------------------------
sinrab 0:5464d5e415e5 189 * end of file
sinrab 0:5464d5e415e5 190 *---------------------------------------------------------------------------*/
sinrab 0:5464d5e415e5 191