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rtx/TARGET_CORTEX_A/rt_Time.c
- Committer:
- Reynier
- Date:
- 2016-05-13
- Revision:
- 109:f37e70028583
- Parent:
- 92:bc9729798a19
File content as of revision 109:f37e70028583:
/*---------------------------------------------------------------------------- * RL-ARM - RTX *---------------------------------------------------------------------------- * Name: RT_TIME.C * Purpose: Delay and interval wait functions * 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_Task.h" #include "rt_Time.h" /*---------------------------------------------------------------------------- * Global Variables *---------------------------------------------------------------------------*/ /* Free running system tick counter */ U32 os_time; /*---------------------------------------------------------------------------- * Functions *---------------------------------------------------------------------------*/ /*--------------------------- rt_time_get -----------------------------------*/ U32 rt_time_get (void) { /* Get system time tick */ return (os_time); } /*--------------------------- rt_dly_wait -----------------------------------*/ void rt_dly_wait (U16 delay_time) { /* Delay task by "delay_time" */ rt_block (delay_time, WAIT_DLY); } /*--------------------------- rt_itv_set ------------------------------------*/ void rt_itv_set (U16 interval_time) { /* Set interval length and define start of first interval */ os_tsk.run->interval_time = interval_time; os_tsk.run->delta_time = interval_time + (U16)os_time; } /*--------------------------- rt_itv_wait -----------------------------------*/ void rt_itv_wait (void) { /* Wait for interval end and define start of next one */ U16 delta; delta = os_tsk.run->delta_time - (U16)os_time; os_tsk.run->delta_time += os_tsk.run->interval_time; if ((delta & 0x8000) == 0) { rt_block (delta, WAIT_ITV); } } /*---------------------------------------------------------------------------- * end of file *---------------------------------------------------------------------------*/