Function at_obj_exec_cmd

components/net/at/src/at_client.c:297–357

* Send commands to AT server and wait response. * * @param client current AT client object * @param resp AT response object, using RT_NULL when you don't care response * @param cmd_expr AT commands expression * * @return 0 : success * -1 : response status error * -2 : wait timeout * -7 : enter AT CLI mode */

 *        -7 : enter AT CLI mode
 */
int at_obj_exec_cmd(at_client_t client, at_response_t resp, const char *cmd_expr, ...)
{
    va_list  args;
    rt_err_t result = RT_EOK;

    RT_ASSERT(cmd_expr);

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

    /* check AT CLI mode */
    if (client->status == AT_STATUS_CLI && resp)
    {
        return -RT_EBUSY;
    }

    rt_mutex_take(&client->lock, RT_WAITING_FOREVER);

    client->resp_status = AT_RESP_OK;

    if (resp != RT_NULL)
    {
        resp->buf_len     = 0;
        resp->line_counts = 0;
    }

    client->resp = resp;
    rt_event_recv(&client->event, at_client_resp_notice_event, RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR, 0, NULL);

    va_start(args, cmd_expr);
    client->last_cmd_len = at_vprintfln(client->device, client->send_buf, client->send_bufsz, cmd_expr, args);
    if (client->last_cmd_len > 2)
    {
        client->last_cmd_len -= 2; /* "\r\n" */
    }
    va_end(args);

    if (resp != RT_NULL)
    {
        if (rt_event_recv(&client->event, at_client_resp_notice_event, RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR, resp->timeout, NULL) != RT_EOK)
        {
            LOG_W("execute command (%.*s) timeout (%d ticks)!", client->last_cmd_len, client->send_buf, resp->timeout);
            client->resp_status = AT_RESP_TIMEOUT;
            result              = -RT_ETIMEOUT;
        }
        else if (client->resp_status != AT_RESP_OK)
        {
            LOG_E("execute command (%.*s) failed!", client->last_cmd_len, client->send_buf);
            result = -RT_ERROR;
        }
    }

    client->resp = RT_NULL;

    rt_mutex_release(&client->lock);