Function rt_timer_start

src/timer.c:562–616

* @brief This function will start the timer * * @param timer the timer to be started * * @return the operation status, RT_EOK on OK, -RT_ERROR on error */

 * @return the operation status, RT_EOK on OK, -RT_ERROR on error
 */
rt_err_t rt_timer_start(rt_timer_t timer)
{
    rt_sched_lock_level_t slvl;
    int is_thread_timer = 0;
    struct rt_spinlock *spinlock;
    rt_list_t *timer_list;
    rt_base_t level;
    rt_err_t err;

    /* parameter check */
    RT_ASSERT(timer != RT_NULL);
    RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);

#ifdef RT_USING_TIMER_ALL_SOFT
    timer_list = _soft_timer_list;
    spinlock = &_stimer_lock;
#else
#ifdef RT_USING_TIMER_SOFT
    if (timer->parent.flag & RT_TIMER_FLAG_SOFT_TIMER)
    {
        timer_list = _soft_timer_list;
        spinlock = &_stimer_lock;
    }
    else
#endif /* RT_USING_TIMER_SOFT */
    {
        timer_list = _timer_list;
        spinlock = &_htimer_lock;
    }
#endif

    if (timer->parent.flag & RT_TIMER_FLAG_THREAD_TIMER)
    {
        rt_thread_t thread;
        is_thread_timer = 1;
        rt_sched_lock(&slvl);

        thread = rt_container_of(timer, struct rt_thread, thread_timer);
        RT_ASSERT(rt_object_get_type(&thread->parent) == RT_Object_Class_Thread);
        rt_sched_thread_timer_start(thread);
    }

    level = rt_spin_lock_irqsave(spinlock);

    err = _timer_start(timer_list, timer);

    rt_spin_unlock_irqrestore(spinlock, level);

    if (is_thread_timer)
    {
        rt_sched_unlock(slvl);
    }

    return err;
}
RTM_EXPORT(rt_timer_start);

/**