【已解决】at 模块发现一个问题：AT+CIPSTATUS 指令回复的数...

发布于 2019-02-20 18:17:20 浏览：5583 订阅该版

* 本帖最后由 tcsun 于 2019-2-21 11:22 编辑 *

我用at 模块其它的AT指令都是好的，今天发现用AT+CIPSTATUS 指令发现数所不完。
我写的查询tcp 联接的函数如下：
int L206_get_tcp_status(void)
{
        at_response_t resp = RT_NULL;
        char *type_connect;
        char *ip;
        char *conn_status;
        int port;

resp = at_create_resp(512, 11, rt_tick_from_millisecond(3000));
        if (!resp)
        {
                        rt_kprintf("No memory for response structure!<br>");
                        return -RT_ENOMEM;
        }
        
           if (at_exec_cmd(resp, "AT+CIPSTATUS") < 0)
    {
        rt_kprintf("get tcp conect status commands error!<br>");
        return -RT_ERROR;
    }

//        at_resp_parse_line_args_by_kw(resp, "STATE: ", "STATE: %s", conn_status);
//        rt_kprintf("connect status:%s<br>",conn_status);
}

打印的数据如下：
L206_get_tcp_status
msh />L206_get_tcp_status
[D/AT] send: 0000-0020: 41 54 2B 43 49 50 53 54  41 54 55 53                                                                  AT+CIPSTATUS
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 22 22 2C 22 49 4E 49 54  49 41 4C 22 0D 0A                                                            "","INITIAL"..
[D/AT] recvline: 0000-0020: 22 49 4E 49 54 49 41 4C  22 0D 0A                                                                     "INITIAL"..
[D/AT] recvline: 0000-0020: 43 3A 20 34 2C 2C 22 22  2C 22 22 2C 22 22 2C 22  49 4E 49 54 49 41 4C 22  0D 0A                      C: 4,,"","","","INITIAL"..
[D/AT] recvline: 0000-0020: 43 3A 20 35 2C 2C 22 22  2C 22 22 2C 22 22 2C 22  49 4E 49 54 49 41 4C 22  0D 0A                      C: 5,,"","","","INITIAL"..
[E/at.clnt] execute command (AT+CIPSTATUS) timeout (300 ticks)!
get tcp conect status commands error!

但我用手动直接发送这个指令AT+CIPSTATUS 或者用at client方式 原始数据是这样的：
msh />at client uart2
======== Welcome to using RT-Thread AT command client cli ========
Cli will forward your command to server port(uart2). Press 'ESC' to exit.
AT+CIPSTATUS
[D/AT] send: 0000-0020: 03 41 54 2B 43 49 50 53  54 41 54 55 53                                                               .AT+CIPSTATUS

STATE: CONNECT OK

C: 0,0,"TCP","124.193.136.53","8180","CONNECTED"
C: 1,,"","","","INITIAL"
C: 2,,"","","","INITIAL"
C: 3,,"","","","INITIAL"
C: 4,,"","","","INITIAL"
C: 5,,"","","","INITIAL"

-----------------------------------------------------------------

哪位帮忙指点一下是什么原因，找了半天都没有找出问题！