Function at_client_obj_send

components/net/at/src/at_client.c:511–534

* Send data to AT server, send data don't have end sign(eg: \r\n). * * @param client current AT client object * @param buf send data buffer * @param size send fixed data size * * @return >0: send data size * =0: send failed */

 *         =0: send failed
 */
rt_size_t at_client_obj_send(at_client_t client, const char *buf, rt_size_t size)
{
    rt_size_t len;

    RT_ASSERT(buf);

    if (client == RT_NULL)
    {
        LOG_E("input AT Client object is NULL, please create or get AT Client object!");
        return 0;
    }

#ifdef AT_PRINT_RAW_CMD
    at_print_raw_cmd("sendline", buf, size);
#endif

    rt_mutex_take(&client->lock, RT_WAITING_FOREVER);

    len = at_utils_send(client->device, 0, buf, size);

    rt_mutex_release(&client->lock);

    return len;
}

/**
 * AT client receive fixed-length data.