If it is called, it must be called before OSInit(). Pointer to the base of the buffer used as the stack. Os.h/os_core.c Prototype # void OS_ConfigureISRStk (CPU_STK *p_stk_base_ptr , which can be found in rtos/common/include/version.h.Ĭonfigure the stack used for ISRs, if available. This function is DEPRECATED and will be removed in a future version of this product. The version number of the Kernel multiplied by 10000. Os.h/os_core.c Prototype # CPU_INT16U OSVersion (RTOS_ERR *p_err ) Arguments # In other words, version 3.01.02 would be returned as 30102. The returned value is the Kernel's version number multiplied by 10000. Returns the version number of the Kernel. If it does, that would be considered a fatal error. Os.h/os_core.c Prototype # void OSStart (RTOS_ERR *p_err ) Arguments #ī) Load the context of the task pointed to by OSTCBHighRdyPtr.
Before you can call OSStart(), you MUST have called OSInit() and you MUST have created at least one application task. Starts the multitasking process which lets the Kernel manage the tasks that you created. Os.h/os_core.c Prototype # void OSSchedUnlock (RTOS_ERR *p_err ) Arguments # In other words, for every call to OSSchedLock(), you MUST have a call to OSSchedUnlock(). You MUST invoke OSSchedLock() and OSSchedUnlock() in pairs.
Os.h/os_core.c Prototype # void OSSchedLock (RTOS_ERR *p_err ) Arguments # Prevents rescheduling from taking place, allowing your application to prevent context switches until you are ready to permit context switching. Os.h/os_core.c Prototype # void OSSched (void ) Arguments #
#Lab scheduling round robin with a timeslice of 4 ticks code
This function is invoked by TASK level code and is not used to reschedule tasks from ISRs (see OSIntExit() for ISR rescheduling). This function is called by other kernel services to determine whether a new, high priority task has been made ready to run. This function MUST be called from a task. Os.h/os_core.c Prototype # void OSSchedRoundRobinYield (RTOS_ERR *p_err ) Arguments # Gives up the CPU when a task is finished its execution before its time slice expires. A value of 0 assumes OSCfg_TickRate_Hz / 10. Os.h/os_core.c Prototype # void OSSchedRoundRobinCfg (CPU_BOOLEAN en ,ĭetermines if the round-robin will be used:ĭEF_ENABLED Round-robin scheduling is enabled.ĭEF_DISABLED Round-robin scheduling is disabled.ĭefault number of ticks between time slices. Rescheduling is prevented when the scheduler is locked (see OSSchedLock()).Ĭhanges the round-robin scheduling parameters. In other words, for every call to OSIntEnter() (or direct increment to OSIntNestingCtr) at the beginning of the ISR, you MUST have a call to OSIntExit() at the end of the ISR. You MUST invoke OSIntEnter() and OSIntExit() in pairs. Os.h/os_core.c Prototype # void OSIntExit (void ) Arguments # When the last nested ISR has completed, the Kernel will call the scheduler to determine whether a new, high-priority task is ready to run. Notifies the Kernel that you have completed servicing an ISR. You are allowed to nest interrupts up to 250 levels deep. In other words, for every call to OSIntEnter() (or direct increment to OSIntNestingCtr) at the beginning of the ISR you MUST have a call to OSIntExit() at the end of the ISR. You MUST still call OSIntExit() even though you can increment ' OSIntNestingCtr' directly.
The port is actually considered part of the OS and is allowed to access the Kernel's variables. Your ISR can directly increment ' OSIntNestingCtr' without calling this function because OSIntNestingCtr has been declared 'global'. This function MUST be called with interrupts already disabled. Os.h/os_core.c Prototype # void OSIntEnter (void ) Arguments # This allows the Kernel to keep track of interrupt nesting and only performs rescheduling at the last nested ISR. Used in an interrupt service routine (ISR) to notify the Kernel that you are about to service an interrupt. This function MUST be called AFTER Common's Mem_Init(). Pointer to the variable that will receive one of the following error code(s) from this function: Os.h/os_core.c Prototype # void OSInit (RTOS_ERR *p_err ) Arguments # Initializes the internals of the Kernel and MUST be called before creating any Kernel object and before calling OSStart().
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