Function rt_sem_init

src/ipc.c:376–391

* @brief This function will initialize a static semaphore object. * * @note For the static semaphore object, its memory space is allocated by the compiler during compiling, * and shall placed on the read-write data segment or on the uninitialized data segment. * By contrast, the rt_sem_create() function will allocate memory space automatically and initialize *

 * @warning  This function can ONLY be called from threads.
 */
rt_err_t rt_sem_init(rt_sem_t    sem,
                     const char *name,
                     rt_uint32_t value,
                     rt_uint8_t  flag)
{
    RT_ASSERT(sem != RT_NULL);
    RT_ASSERT(value < 0x10000U);
    RT_ASSERT((flag == RT_IPC_FLAG_FIFO) || (flag == RT_IPC_FLAG_PRIO));

    /* initialize object */
    rt_object_init(&(sem->parent.parent), RT_Object_Class_Semaphore, name);

    _sem_object_init(sem, value, flag, RT_SEM_VALUE_MAX);

    return RT_EOK;
}
RTM_EXPORT(rt_sem_init);