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Diff: rtx/TARGET_CORTEX_A/rt_Event.c
- Revision:
- 105:94371fac911d
- Parent:
- 104:07314541bd12
--- a/rtx/TARGET_CORTEX_A/rt_Event.c Thu Feb 18 10:00:31 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,194 +0,0 @@ -/*---------------------------------------------------------------------------- - * RL-ARM - RTX - *---------------------------------------------------------------------------- - * Name: RT_EVENT.C - * Purpose: Implements waits and wake-ups for event flags - * Rev.: V4.70 - *---------------------------------------------------------------------------- - * - * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - *---------------------------------------------------------------------------*/ - -#include "rt_TypeDef.h" -#include "RTX_Config.h" -#include "rt_System.h" -#include "rt_Event.h" -#include "rt_List.h" -#include "rt_Task.h" -#ifdef __CORTEX_A9 -#include "rt_HAL_CA.h" -#else -#include "rt_HAL_CM.h" -#endif - - -/*---------------------------------------------------------------------------- - * Functions - *---------------------------------------------------------------------------*/ - - -/*--------------------------- rt_evt_wait -----------------------------------*/ - -OS_RESULT rt_evt_wait (U16 wait_flags, U16 timeout, BOOL and_wait) { - /* Wait for one or more event flags with optional time-out. */ - /* "wait_flags" identifies the flags to wait for. */ - /* "timeout" is the time-out limit in system ticks (0xffff if no time-out) */ - /* "and_wait" specifies the AND-ing of "wait_flags" as condition to be met */ - /* to complete the wait. (OR-ing if set to 0). */ - U32 block_state; - - if (and_wait) { - /* Check for AND-connected events */ - if ((os_tsk.run->events & wait_flags) == wait_flags) { - os_tsk.run->events &= ~wait_flags; - return (OS_R_EVT); - } - block_state = WAIT_AND; - } - else { - /* Check for OR-connected events */ - if (os_tsk.run->events & wait_flags) { - os_tsk.run->waits = os_tsk.run->events & wait_flags; - os_tsk.run->events &= ~wait_flags; - return (OS_R_EVT); - } - block_state = WAIT_OR; - } - /* Task has to wait */ - os_tsk.run->waits = wait_flags; - rt_block (timeout, (U8)block_state); - return (OS_R_TMO); -} - - -/*--------------------------- rt_evt_set ------------------------------------*/ - -void rt_evt_set (U16 event_flags, OS_TID task_id) { - /* Set one or more event flags of a selectable task. */ - P_TCB p_tcb; - - p_tcb = os_active_TCB[task_id-1]; - if (p_tcb == NULL) { - return; - } - p_tcb->events |= event_flags; - event_flags = p_tcb->waits; - /* If the task is not waiting for an event, it should not be put */ - /* to ready state. */ - if (p_tcb->state == WAIT_AND) { - /* Check for AND-connected events */ - if ((p_tcb->events & event_flags) == event_flags) { - goto wkup; - } - } - if (p_tcb->state == WAIT_OR) { - /* Check for OR-connected events */ - if (p_tcb->events & event_flags) { - p_tcb->waits &= p_tcb->events; -wkup: p_tcb->events &= ~event_flags; - rt_rmv_dly (p_tcb); - p_tcb->state = READY; -#ifdef __CMSIS_RTOS - rt_ret_val2(p_tcb, 0x08/*osEventSignal*/, p_tcb->waits); -#else - rt_ret_val (p_tcb, OS_R_EVT); -#endif - rt_dispatch (p_tcb); - } - } -} - - -/*--------------------------- rt_evt_clr ------------------------------------*/ - -void rt_evt_clr (U16 clear_flags, OS_TID task_id) { - /* Clear one or more event flags (identified by "clear_flags") of a */ - /* selectable task (identified by "task"). */ - P_TCB task = os_active_TCB[task_id-1]; - - if (task == NULL) { - return; - } - task->events &= ~clear_flags; -} - - -/*--------------------------- isr_evt_set -----------------------------------*/ - -void isr_evt_set (U16 event_flags, OS_TID task_id) { - /* Same function as "os_evt_set", but to be called by ISRs. */ - P_TCB p_tcb = os_active_TCB[task_id-1]; - - if (p_tcb == NULL) { - return; - } - rt_psq_enq (p_tcb, event_flags); - rt_psh_req (); -} - - -/*--------------------------- rt_evt_get ------------------------------------*/ - -U16 rt_evt_get (void) { - /* Get events of a running task after waiting for OR connected events. */ - return (os_tsk.run->waits); -} - - -/*--------------------------- rt_evt_psh ------------------------------------*/ - -void rt_evt_psh (P_TCB p_CB, U16 set_flags) { - /* Check if task has to be waken up */ - U16 event_flags; - - p_CB->events |= set_flags; - event_flags = p_CB->waits; - if (p_CB->state == WAIT_AND) { - /* Check for AND-connected events */ - if ((p_CB->events & event_flags) == event_flags) { - goto rdy; - } - } - if (p_CB->state == WAIT_OR) { - /* Check for OR-connected events */ - if (p_CB->events & event_flags) { - p_CB->waits &= p_CB->events; -rdy: p_CB->events &= ~event_flags; - rt_rmv_dly (p_CB); - p_CB->state = READY; -#ifdef __CMSIS_RTOS - rt_ret_val2(p_CB, 0x08/*osEventSignal*/, p_CB->waits); -#else - rt_ret_val (p_CB, OS_R_EVT); -#endif - rt_put_prio (&os_rdy, p_CB); - } - } -} - -/*---------------------------------------------------------------------------- - * end of file - *---------------------------------------------------------------------------*/