127 lines
4.9 KiB
C
127 lines
4.9 KiB
C
/**
|
|
*******************************************************************************
|
|
* @file arch.c
|
|
* @version V1.1.6
|
|
* @date 2014.05.23
|
|
* @brief This file provides InitTaskContext() and SysTick_Handler().
|
|
*******************************************************************************
|
|
* @copy
|
|
* 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 the <ORGANIZATION> 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 THE COPYRIGHT OWNER OR 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.
|
|
*
|
|
* <h2><center>© COPYRIGHT 2014 CooCox </center></h2>
|
|
*******************************************************************************
|
|
*/
|
|
|
|
/*---------------------------- Include ---------------------------------------*/
|
|
#include <coocox.h>
|
|
U64 OSTickCnt = 0; /*!< Current system tick counter */
|
|
|
|
/**
|
|
******************************************************************************
|
|
* @brief Initial task context
|
|
* @param[in] task Entry point of task.
|
|
* @param[in] param The parameter pass to task.
|
|
* @param[in] pstk The pointer to stack top.
|
|
* @param[out] None
|
|
* @retval Returns location of new stack top.
|
|
*
|
|
* @par Description
|
|
* @details This function is called to initialize the stack frame of the
|
|
* task being created.
|
|
******************************************************************************
|
|
*/
|
|
OS_STK *InitTaskContext(FUNCPtr task,void *param,OS_STK *pstk)
|
|
{
|
|
OS_STK *context;
|
|
context = pstk;
|
|
#if CFG_CHIP_TYPE == 3
|
|
context = context - 18;
|
|
#endif
|
|
*(context--) = (U32)0x01000000L; /* xPSR */
|
|
*(context--) = (U32)task; /* Entry point of task. */
|
|
*(context) = (U32)0xFFFFFFFEL;
|
|
context = context - 5;
|
|
*(context) = (U32)param; /* R0: argument */
|
|
context = context - 8;
|
|
#if CFG_CHIP_TYPE == 3
|
|
context = context - 16;
|
|
#endif
|
|
// *(--context) = 0xfffffffd; /* LR */
|
|
|
|
return (context); /* Returns location of new stack top. */
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
*******************************************************************************
|
|
* @brief System tick interrupt handler.
|
|
* @param[in] None
|
|
* @param[out] None
|
|
* @retval None
|
|
*
|
|
* @par Description
|
|
* @details This is system tick interrupt headler.
|
|
* @note CoOS may schedule when exiting this ISR.
|
|
*******************************************************************************
|
|
*/
|
|
void CoSysTick_Handler(void)
|
|
{
|
|
OSSchedLock++; /* Lock scheduler. */
|
|
OSTickCnt++; /* Increment systerm time. */
|
|
#if CFG_TASK_WAITTING_EN >0
|
|
if(DlyList != Co_NULL) /* Have task in delay list? */
|
|
{
|
|
if(DlyList->delayTick > 1) /* Delay time > 1? */
|
|
{
|
|
DlyList->delayTick--; /* Decrease delay time of the list head. */
|
|
}
|
|
else
|
|
{
|
|
DlyList->delayTick = 0;
|
|
isr_TimeDispose(); /* Call hander for delay time list */
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if CFG_TMR_EN > 0
|
|
if(TmrList != Co_NULL) /* Have timer in working? */
|
|
{
|
|
if(TmrList->tmrCnt > 1) /* Timer time > 1? */
|
|
{
|
|
TmrList->tmrCnt--; /* Decrease timer time of the list head. */
|
|
}
|
|
else
|
|
{
|
|
TmrList->tmrCnt = 0;
|
|
isr_TmrDispose(); /* Call hander for timer list */
|
|
}
|
|
}
|
|
#endif
|
|
TaskSchedReq = Co_TRUE;
|
|
OsSchedUnlock();
|
|
}
|