diff options
| author | bernard.xiong <[email protected]> | 2010-03-25 15:16:34 +0000 |
|---|---|---|
| committer | bernard.xiong <[email protected]> | 2010-03-25 15:16:34 +0000 |
| commit | 474d3b805660b260739702089be2e99a26f6d12b (patch) | |
| tree | a760a0609fa552735807fe56a50a5940aa5ef9d3 /examples/kernel/timer_control.c | |
| parent | a08d9637b608c2f94925e2d304080026b771e7fb (diff) | |
add timer_control example.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@543 bbd45198-f89e-11dd-88c7-29a3b14d5316
Diffstat (limited to 'examples/kernel/timer_control.c')
| -rw-r--r-- | examples/kernel/timer_control.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/examples/kernel/timer_control.c b/examples/kernel/timer_control.c new file mode 100644 index 0000000000..7039000dfb --- /dev/null +++ b/examples/kernel/timer_control.c @@ -0,0 +1,82 @@ +/*
+ * 程序清单：动态定时器例程
+ *
+ * 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。
+ */
+#include <rtthread.h>
+#include "tc_comm.h"
+
+/* 定时器的控制块 */
+static rt_timer_t timer1;
+static rt_uint8_t count;
+
+/* 定时器超时函数 */
+static void timeout1(void* parameter)
+{
+ rt_kprintf("periodic timer is timeout\n");
+
+ count ++;
+ /* 停止定时器自身 */
+ if (count >= 8)
+ {
+ /* 控制定时器然后更改超时时间长度 */
+ rt_timer_control(timer1, RT_TIMER_CTRL_SET_TIME, 50);
+ count = 0;
+ }
+}
+
+void timer_stop_self_init()
+{
+ /* 创建定时器1 */
+ timer1 = rt_timer_create("timer1", /* 定时器名字是 timer1 */
+ timeout1, /* 超时时回调的处理函数 */
+ RT_NULL, /* 超时函数的入口参数 */
+ 10, /* 定时长度，以OS Tick为单位，即10个OS Tick */
+ RT_TIMER_FLAG_PERIODIC); /* 周期性定时器 */
+ /* 启动定时器 */
+ if (timer1 != RT_NULL)
+ rt_timer_start(timer1);
+ else
+ tc_stat(TC_STAT_END | TC_STAT_FAILED);
+}
+
+#ifdef RT_USING_TC
+static void _tc_cleanup()
+{
+ /* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
+ rt_enter_critical();
+
+ /* 删除定时器对象 */
+ rt_timer_delete(timer1);
+ timer1 = RT_NULL;
+
+ /* 调度器解锁 */
+ rt_exit_critical();
+
+ /* 设置TestCase状态 */
+ tc_done(TC_STAT_PASSED);
+}
+
+int _tc_timer_stop_self()
+{
+ /* 设置TestCase清理回调函数 */
+ tc_cleanup(_tc_cleanup);
+
+ /* 执行定时器例程 */
+ count = 0;
+ timer_stop_self_init();
+
+ /* 返回TestCase运行的最长时间 */
+ return 100;
+}
+/* 输出函数命令到finsh shell中 */
+FINSH_FUNCTION_EXPORT(_tc_timer_stop_self, a dynamic timer example);
+#else
+/* 用户应用入口 */
+int rt_application_init()
+{
+ timer_stop_self_init();
+
+ return 0;
+}
+#endif
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