static rt_mutex_t test_mutex = RT_NULL;
test_mutex = rt_mutex_create("test_mutex",        //互斥量名
                             RT_IPC_FLAG_PRIO);   //操作互斥量方式
if (test_mutex != RT_NULL)                        //监测互斥量初始化是否成功
{
    rt_kprintf("互斥量初始化成功！");
}

//一般在线程入口函数中对互斥量进行操作
void thread_entry(void* parameter)
{
    dosomething();
    rt_err_t uwRet = RT_EOK;
    uwRet = rt_mutex_take(test_mutex, RT_WAITING_FOREVER);
    if (uwRet == RT_EOK)
        rt_kprintf("获取互斥量成功!");
    dosomething();
    uwRet = rt_mutex_release(test_mutex);
}