94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
|
/*----------------------------------------------------------------------------
|
||
|
|
* CMSIS-RTOS - RTX
|
||
|
|
*----------------------------------------------------------------------------
|
||
|
|
* Name: RT_TIME.C
|
||
|
|
* Purpose: Delay and interval wait functions
|
||
|
|
* Rev.: V4.79
|
||
|
|
*----------------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* Copyright (c) 1999-2009 KEIL, 2009-2015 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 & 0x8000U) == 0U) {
|
||
|
|
rt_block (delta, WAIT_ITV);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
* end of file
|
||
|
|
*---------------------------------------------------------------------------*/
|