Function serial_tty_open

components/drivers/serial/serial_tty.c:199–224

}

static int serial_tty_open(struct lwp_tty *tp)
{
    struct serial_tty_context *softc;
    struct rt_serial_device *serial;
    rt_err_t error;
    int oflags;

    softc = tty_softc(tp);
    serial = softc->parent;

    LOG_D("%s", __func__);

    rt_device_control(&serial->parent, RT_DEVICE_CTRL_CONSOLE_OFLAG, &oflags);

    error = rt_device_open(&serial->parent, oflags);

    if (!error)
    {
        /**
         * to avoid driver accesssing null data,
         * these are setup only after tty is registered
         */
        _setup_serial(serial, tp, softc);
    }
    return error;
}

static void serial_tty_close(struct lwp_tty *tp)
{