事件例程

雷鹏

/*
* 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 "tc comm.h"

#define THREAD_STACK_SIZE  512
#define  THREAD_PRIORITY  20
#define  THREAD_TIMESLICE 20


/* 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 j 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 j 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 j 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