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rt-thread的定时器管理源码分析(六)

2014-11-24 08:11:12 · 作者: · 浏览: 5
标签: rt-thread 定时器 管理 源码 分析
* @param arg the argument
*
* @return RT_EOK
*/
rt_err_t rt_timer_control(rt_timer_t timer, rt_uint8_t cmd, void *arg)
{
/* timer check */
RT_ASSERT(timer != RT_NULL);
switch (cmd)
{
case RT_TIMER_CTRL_GET_TIME://获取时间参数
*(rt_tick_t *)arg = timer->init_tick;
break;
case RT_TIMER_CTRL_SET_TIME://修改时间参数
timer->init_tick = *(rt_tick_t *)arg;
break;
case RT_TIMER_CTRL_SET_ONESHOT://修改定时器模式为单次触发定时器
timer->parent.flag &= ~RT_TIMER_FLAG_PERIODIC;
break;
case RT_TIMER_CTRL_SET_PERIODIC://修改定时器为周期触发定时器
timer->parent.flag |= RT_TIMER_FLAG_PERIODIC;
break;
}
return RT_EOK;
}