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Project/Src/rt-thread/examples/kernel/event_simple.c

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+/*
+ * 程序清单：事件例程
+ *
+ * 这个程序会创建3个动态线程及初始化一个静态事件对象
+ * 一个线程等于事件对象上以接收事件；
+ * 一个线程定时发送事件 (事件3)
+ * 一个线程定时发送事件 (事件5)
+ */
+#include <rtthread.h>
+#include <time.h>
+#include "tc_comm.h"
+
+/* 指向线程控制块的指针 */
+static rt_thread_t tid1 = RT_NULL;
+static rt_thread_t tid2 = RT_NULL;
+static rt_thread_t tid3 = RT_NULL;
+
+/* 事件控制块 */
+static struct rt_event event;
+
+/* 线程1入口函数 */
+static void thread1_entry(void *param)
+{
+    rt_uint32_t e;
+
+    while (1)
+    {
+        /* receive first event */
+        if (rt_event_recv(&event, ((1 << 3) | (1 << 5)),
+                          RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
+                          RT_WAITING_FOREVER, &e) == RT_EOK)
+        {
+            rt_kprintf("thread1: AND recv event 0x%x\n", e);
+        }
+
+        rt_kprintf("thread1: delay 1s to prepare second event\n");
+        rt_thread_delay(10);
+
+        /* receive second event */
+        if (rt_event_recv(&event, ((1 << 3) | (1 << 5)),
+                          RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
+                          RT_WAITING_FOREVER, &e) == RT_EOK)
+        {
+            rt_kprintf("thread1: OR recv event 0x%x\n", e);
+        }
+
+        rt_thread_delay(5);
+    }
+}
+
+/* 线程2入口函数 */
+static void thread2_entry(void *param)
+{
+    while (1)
+    {
+        rt_kprintf("thread2: send event1\n");
+        rt_event_send(&event, (1 << 3));
+
+        rt_thread_delay(10);
+    }
+}
+
+/* 线程3入口函数 */
+static void thread3_entry(void *param)
+{
+    while (1)
+    {
+        rt_kprintf("thread3: send event2\n");
+        rt_event_send(&event, (1 << 5));
+
+        rt_thread_delay(20);
+    }
+}
+
+int event_simple_init()
+{
+    /* 初始化事件对象 */
+    rt_event_init(&event, "event", RT_IPC_FLAG_FIFO);
+
+    /* 创建线程1 */
+    tid1 = rt_thread_create("t1",
+                            thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
+                            THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    if (tid1 != RT_NULL)
+        rt_thread_startup(tid1);
+    else
+        tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+    /* 创建线程2 */
+    tid2 = rt_thread_create("t2",
+                            thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
+                            THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    if (tid2 != RT_NULL)
+        rt_thread_startup(tid2);
+    else
+        tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+    /* 创建线程3 */
+    tid3 = rt_thread_create("t3",
+                            thread3_entry, RT_NULL, /* 线程入口是thread3_entry, 入口参数是RT_NULL */
+                            THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    if (tid3 != RT_NULL)
+        rt_thread_startup(tid3);
+    else
+        tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+    return 0;
+}
+
+#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();
+
+    /* 删除线程 */
+    if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
+        rt_thread_delete(tid1);
+    if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
+        rt_thread_delete(tid2);
+    if (tid3 != RT_NULL && tid3->stat != RT_THREAD_CLOSE)
+        rt_thread_delete(tid3);
+
+    /* 执行事件对象脱离 */
+    rt_event_detach(&event);
+
+    /* 调度器解锁 */
+    rt_exit_critical();
+
+    /* 设置TestCase状态 */
+    tc_done(TC_STAT_PASSED);
+}
+
+int _tc_event_simple()
+{
+    /* 设置TestCase清理回调函数 */
+    tc_cleanup(_tc_cleanup);
+    event_simple_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_event_simple, a simple event example);
+#else
+/* 用户应用入口 */
+int rt_application_init()
+{
+    event_simple_init();
+
+    return 0;
+}
+#endif