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CoOS Demonstrator adapted to mbed Hardware.
Diff: arch.c
- Revision:
- 0:57690853989a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/arch.c Fri Dec 03 19:45:30 2010 +0000 @@ -0,0 +1,96 @@ +/** + ******************************************************************************* + * @file arch.c + * @version V1.1.3 + * @date 2010.04.26 + * @brief This file provides InitTaskContext() and SysTick_Handler(). + ******************************************************************************* + * @copy + * WRITE COPY INFORMATION USE CAPITAL LETTER + * + * <h2><center>© COPYRIGHT 2009 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; + *(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; + + 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. + ******************************************************************************* + */ +extern "C" void SysTick_Handler(void) +{ + OSSchedLock++; /* Lock scheduler. */ + OSTickCnt++; /* Increment systerm time. */ +#if CFG_TASK_WAITTING_EN >0 + if(DlyList != 0) /* 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 != 0) /* 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 = TRUE; + OsSchedUnlock(); +}