10 请问看门狗超时时间和事件组发送可以重复发送吗？

static int wdt_sample(void)
{
    rt_err_t ret = RT_EOK;
    rt_uint32_t timeout = 5;        /* 溢出时间，单位：秒 */
    /* 根据设备名称查找看门狗设备，获取设备句柄 */
    wdg_dev = rt_device_find(WDT_DEVICE_NAME);
    if (!wdg_dev)
    {
//        rt_kprintf("find %s failed!\n", device_name);
        return RT_ERROR;
    }
    /* 设置看门狗溢出时间 */
    ret = rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
    if (ret != RT_EOK)
    {
//        rt_kprintf("set %s timeout failed!\n", device_name);
        return RT_ERROR;
    }
    /* 启动看门狗 */
    ret = rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_START, RT_NULL);
    if (ret != RT_EOK)
    {
//        rt_kprintf("start %s failed!\n", device_name);
        return -RT_ERROR;
    }
    /* 设置空闲线程回调函数 */
//    rt_thread_idle_sethook(idle_hook);
    return ret;
}

rt_event_send(&feed_dog_event, EVENT_FLAG3);

void feed_dog(void* parameter)
{
    rt_uint32_t e = 0;
    while(1)
    {
         if (rt_event_recv(&feed_dog_event, (EVENT_FLAG1 & EVENT_FLAG2 & EVENT_FLAG3 & EVENT_FLAG4 &  EVENT_FLAG5),
                      RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
                      30, &e) == RT_EOK)
         {
             if ((e & DOG_BIT_ALL) == DOG_BIT_ALL)
             {
                rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
                e = 0;
             }
         }
        rt_thread_delay(500);
    }
}