Function rt_timer_control

src/timer.c:665–739

* @brief This function will get or set some options of the timer * * @param timer the timer to be get or set * @param cmd the control command * @param arg the argument * * @return the statu of control */

 * @return the statu of control
 */
rt_err_t rt_timer_control(rt_timer_t timer, int cmd, void *arg)
{
    struct rt_spinlock *spinlock;
    rt_base_t level;

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

    spinlock = _timerlock_idx(timer);

    level = rt_spin_lock_irqsave(spinlock);
    switch (cmd)
    {
    case RT_TIMER_CTRL_GET_TIME:
        *(rt_tick_t *)arg = timer->init_tick;
        break;

    case RT_TIMER_CTRL_SET_TIME:
        RT_ASSERT((*(rt_tick_t *)arg) < RT_TICK_MAX / 2);
        if (timer->parent.flag & RT_TIMER_FLAG_ACTIVATED)
        {
            _timer_remove(timer);
            timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
        }
        timer->init_tick = *(rt_tick_t *)arg;
        break;

    case RT_TIMER_CTRL_SET_ONESHOT:
        timer->parent.flag &= ~RT_TIMER_FLAG_PERIODIC;
        break;

    case RT_TIMER_CTRL_SET_PERIODIC:
        timer->parent.flag |= RT_TIMER_FLAG_PERIODIC;
        break;

    case RT_TIMER_CTRL_GET_STATE:
        if(timer->parent.flag & RT_TIMER_FLAG_ACTIVATED)
        {
            /*timer is start and run*/
            *(rt_uint32_t *)arg = RT_TIMER_FLAG_ACTIVATED;
        }
        else
        {
            /*timer is stop*/
            *(rt_uint32_t *)arg = RT_TIMER_FLAG_DEACTIVATED;
        }
        break;

    case RT_TIMER_CTRL_GET_REMAIN_TIME:
        *(rt_tick_t *)arg =  timer->timeout_tick;
        break;
    case RT_TIMER_CTRL_GET_FUNC:
        *(void **)arg = (void *)timer->timeout_func;
        break;

    case RT_TIMER_CTRL_SET_FUNC:
        timer->timeout_func = (void (*)(void*))arg;