Function at_client_obj_wait_connect

components/net/at/src/at_client.c:460–499

* Waiting for connection to external devices. * * @param client current AT client object * @param timeout millisecond for timeout * * @return 0 : success * -2 : timeout * -5 : no memory */

 *        -5 : no memory
 */
int at_client_obj_wait_connect(at_client_t client, rt_uint32_t timeout)
{
    rt_err_t      result     = RT_EOK;
    at_response_t resp       = RT_NULL;
    rt_tick_t     start_time = 0;

    if (client == RT_NULL)
    {
        LOG_E("input AT client object is NULL, please create or get AT Client object!");
        return -RT_ERROR;
    }

    resp = at_create_resp(64, 0, rt_tick_from_millisecond(300));
    if (resp == RT_NULL)
    {
        LOG_E("no memory for AT client(%s) response object.", client->device->parent.name);
        return -RT_ENOMEM;
    }

    start_time = rt_tick_get();

    while (1)
    {
        /* Check whether it is timeout */
        if (rt_tick_get() - start_time > rt_tick_from_millisecond(timeout))
        {
            LOG_E("wait AT client(%s) connect timeout(%d tick).", client->device->parent.name, timeout);
            result = -RT_ETIMEOUT;
            break;
        }

        if (at_obj_exec_cmd(client, resp, "AT") == RT_EOK)
        {
            break;
        }
    }

    at_delete_resp(resp);
    return result;
}

/**
 * Send data to AT server, send data don't have end sign(eg: \r\n).