sdk-hwV1.3/lichee/melis-v3.0/source/ekernel/drivers/osal/src/hal_sem.c

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#include <hal_sem.h>
#include <rtdef.h>
#include <log.h>

hal_sem_t hal_sem_create(unsigned int cnt)
{
     return (hal_sem_t) rt_sem_create("hal_layer", cnt, RT_IPC_FLAG_FIFO);
}

int hal_sem_delete(hal_sem_t sem)
{
    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    rt_sem_delete(sem);
    return 0;
}

int hal_sem_getvalue(hal_sem_t sem, int *val)
{
    if (sem == NULL || val == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    rt_sem_control(sem, RT_IPC_CMD_GET_STATE, val);

    return 0;
}

int hal_sem_post(hal_sem_t sem)
{
    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    // must be success.
    rt_sem_release(sem);

    return 0;
}

int hal_sem_timedwait(hal_sem_t sem, unsigned long ticks)
{
    rt_err_t ret;

    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    ret = rt_sem_take(sem, ticks);
    if (ret != RT_EOK)
    {
        // timeout.
        return -2;
    }

    return 0;
}

int hal_sem_trywait(hal_sem_t sem)
{
    rt_err_t ret;

    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    ret = rt_sem_trytake(sem);
    if (ret != RT_EOK)
    {
        // timeout.
        return -2;
    }

    return 0;
}

int hal_sem_wait(hal_sem_t sem)
{
    rt_err_t ret;

    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    ret = rt_sem_take(sem, RT_WAITING_FOREVER);
    if (ret != RT_EOK)
    {
        // timeout.
        return -2;
    }

    return 0;
}

int hal_sem_clear(hal_sem_t sem)
{
    rt_err_t ret;

    if (sem == NULL)
    {
        __err("fatal error, parameter is invalid.");
        return -1;
    }

    ret = rt_sem_control(sem, RT_IPC_CMD_RESET, NULL);
    if (ret != RT_EOK) {
        __err("rt_sem_control fail\n");
        return -1;
    }

    return 0;
}