Function rt_device_control

components/drivers/core/device.c:419–432

* @brief This function will perform a variety of control functions on devices. * * @param dev is the pointer of device driver structure. * * @param cmd is the command sent to device. * * @param arg is the argument of command. * * @return the result, -RT_ENOSYS for failed. */

 * @return the result, -RT_ENOSYS for failed.
 */
rt_err_t rt_device_control(rt_device_t dev, int cmd, void *arg)
{
    /* parameter check */
    RT_ASSERT(dev != RT_NULL);
    RT_ASSERT(rt_object_get_type(&dev->parent) == RT_Object_Class_Device);

    /* call device_write interface */
    if (device_control != RT_NULL)
    {
        return device_control(dev, cmd, arg);
    }

    return -RT_ENOSYS;
}
RTM_EXPORT(rt_device_control);

/**