85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/*
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* 程序清单：动态定时器例程
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*
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* 这个例程会创建1个动态周期型定时器对象，然后控制它进行定时时间长度的更改。
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*/
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#include <rtthread.h>
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#include "tc_comm.h"
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/* 定时器的控制块 */
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static rt_timer_t timer1;
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static rt_uint8_t count;
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/* 定时器超时函数 */
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static void timeout1(void* parameter)
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{
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rt_tick_t timeout = 50;
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rt_kprintf("periodic timer is timeout\n");
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count ++;
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/* 停止定时器自身 */
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if (count >= 8)
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{
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/* 控制定时器然后更改超时时间长度 */
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rt_timer_control(timer1, RT_TIMER_CTRL_SET_TIME, (void *)&timeout);
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count = 0;
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}
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}
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void timer_control_init()
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{
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/* 创建定时器1 */
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timer1 = rt_timer_create("timer1", /* 定时器名字是 timer1 */
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timeout1, /* 超时时回调的处理函数 */
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RT_NULL, /* 超时函数的入口参数 */
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10, /* 定时长度，以OS Tick为单位，即10个OS Tick */
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RT_TIMER_FLAG_PERIODIC); /* 周期性定时器 */
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/* 启动定时器 */
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if (timer1 != RT_NULL)
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rt_timer_start(timer1);
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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}
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#ifdef RT_USING_TC
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static void _tc_cleanup()
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{
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/* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
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rt_enter_critical();
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/* 删除定时器对象 */
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rt_timer_delete(timer1);
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timer1 = RT_NULL;
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/* 调度器解锁 */
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rt_exit_critical();
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/* 设置TestCase状态 */
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tc_done(TC_STAT_PASSED);
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}
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int _tc_timer_control()
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{
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/* 设置TestCase清理回调函数 */
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tc_cleanup(_tc_cleanup);
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/* 执行定时器例程 */
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count = 0;
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timer_control_init();
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/* 返回TestCase运行的最长时间 */
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return 100;
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}
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/* 输出函数命令到finsh shell中 */
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FINSH_FUNCTION_EXPORT(_tc_timer_control, a timer control example);
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#else
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/* 用户应用入口 */
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int rt_application_init()
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{
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timer_control_init();
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return 0;
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}
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#endif
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