PXROS time slicing configuration

The time slicing value can be set during task creation or during runtime with use of the PxSetTimeslices() method [1]. Below, you will find examples illustrating both scenarios for reference.

Code 1. Example of time slice configuration during task creation

/* TIMESLICE (in ticks) */
#define TASK_TIMESLICE		           100


PxTask_t LedClientB_Create (PxPrio_t prio, PxEvents_t events, PxMc_t memClass, PxOpool_t objPool)
{
    PxTaskSpec_T task_Spec;

    /* Clear task_Spec structure before it is initialized */
    PxBzero ((PxUChar_t *)&task_Spec, sizeof(task_Spec));

    /* Configure Task specification */
    task_Spec.ts_name                    = (const PxChar_t *) "Task LedClientB";
    task_Spec.ts_fun                     = LedClientB_taskFunc;

    task_Spec.ts_mc                      = memClass;
    task_Spec.ts_opool                   = objPool;

    task_Spec.ts_privileges              = TASK_PRIVILIGES;
    task_Spec.ts_accessrights            = THISTASK_PXACCESS;

    task_Spec.ts_context                 = &task_Context;
    task_Spec.ts_protect_region          = taskAPRegions;

    task_Spec.ts_timeslices				 = TASK_TIMESLICE;

    task_Spec.ts_taskstack.stk_type      = PXStackAlloc;
    task_Spec.ts_taskstack.stk_size      = TASK_STACKSIZE / sizeof(PxInt_t);;
    task_Spec.ts_taskstack.stk_src.mc    = memClass;

    task_Spec.ts_inttaskstack.stk_type   = PXStackAlloc;
    task_Spec.ts_inttaskstack.stk_size   = TASK_INTR_STACKSIZE / sizeof(PxInt_t);;
    task_Spec.ts_inttaskstack.stk_src.mc = memClass;

    task_Spec.ts_abortstacksize          = 0;

    /* Create the Task */
    return PxTaskCreate (objPool,&task_Spec,prio,events);
}

Code 2. Example of timeslice configuration during runtime

void LedClientA_taskFunc (PxTask_t myID, PxMbx_t myMailbox, PxEvents_t myActEvents)
{
	/* task code here */

    /* Set timeslices (in ticks) */
    PxSetTimeslices(50);

    /* TASK MAIN LOOP
     * Wait for periodic event to wake-up, and send the Event to the LedServer.
     * In case of unexpected event, stop.
     */
    while (1)
    {
        errRes = PxTaskSignalEvents (LedServerID, LEDSERVER_EV_TOGGLE_LED_0);
            if (errRes != PXERR_NOERROR)
                PxPanic();
    }
}