---
title: "Wiffi210 connection & disconnection (urgent)"
url: "https://maker.wiznet.io/forum/9771"
markdown_url: "https://maker.wiznet.io/forum/9771/md"
type: "Forum topic"
category: "Wireless"
author: "hobbex"
created: "2013-12-25T09:32:03+09:00"
last_activity: "2017-05-04T08:30:48+09:00"
language: "en"
views: 465
replies: 4
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Wiffi210 connection & disconnection (urgent)

## Question

Asked by hobbex on 2013-12-25 in Wireless.

Hi,
What is the proper way of disconnecting from a Network??

I set up my WIFI-module as a server and connect to a PC in Adhoc-mode.

I use these commands:

Connect to WiFi-network:
AT+WWPA=password

Disable DHCP:
AT+NDHCP=0

set module Ip-Address and Gateway IP:
AT+NSET=192.168.1.1,255.255.255.0,192.168.1.2

set Wifi-parameters for auto-connect:
AT+WAUTO=2,MYadhocNetwork,0

Connect:
ATA

> Connection is made…<

Now in data-mode, i cannot send any more commands to the module.

Now if want to disconnect again…
Question1: is the proper way of disconnecting, to send “+++” ?? do i have to issue a AT+XDUM=0 command first everytime?

Question2:
If i connect my computer to the adhoc-network first, it says “waiting for user”. As soon as i connect the WIFI-module (with ATA), the connection is made and the computer says “connected”. Everything is fine!
But if i connect the module first and then the computer, no connection is made. The computer says “waiting for user…” and nothing more happens. Can i force a connection to be made?

i could use the AT+PING command to see when the computer is connected and then issue a ATA command, but that won’t work since i’m not connected to the computer before ATA-command

Question3:
Can i send AT+Ping commands while in data-mode? The module is inresponsive in data-mode, so i’m not sure how to send additional commands without first exiting data-mode (with +++), which disconnects the server-client connection.

Note: i’m using a dfRobot Wifi-shield v2.2.Tried getting help from dFrobot, without success (yet)

## Replies

### Reply 1 by hobbex, 2013-12-25

here is my settings (at&v)

```
at&v
ACTIVE PROFILE
C0 &Y0 E0 V1 B=115200,8,N,1 &K0 &R0
+NDHCP=0168.1.2
+DNS1=0.0.0.0, +DNS2=0.0.0.0
+WM=0 +WAUTO=2,"MYadhocNetwork",,
+WRE0.0.0.0,4000
+WAUTH=0 +WWPA="myPassword"+PSK-valid=0 +SSID=htech2
+WWEP1=000,26,,
S0=01000 S1=00500 S2=00500 S3=00003 S4=00010 S5=00150
+BDATA=0  +WSEC=XAIRCMDPORT=5001
+XDO=0,0,0 +XAR=0 +XUAP=0 +XPSO=0,0
```

### Reply 2 by ssekim, 2013-12-26

Hello hobbex

You can’t issue at-commands in data-mode.
If you want to disconnect it or issue additional command, WizFi210 should be transited into using “+++”.

Steve

### Reply 3 by hobbex, 2013-12-26

Thanks Steve,

So, what about my Question#2 regarding the adhoc-connection procedure?

### Reply 4 by ssekim, 2013-12-31

Here is my test scenario.

1. configure WizFi210 as ad-hoc mode(ssid : dddddd)
   AT+NSET=192.168.12.254,255.255.255.0,192.168.12.1
   at+wd
   at+wa=dddddd (just test ssid)

2. configure PC as ad-hoc mode(ssid : dddddd)
   In this step, I used with static ip.
   Then the ping-test worked well.
   How about test it again with another wireless utility(not zero configuration).
   I guess the problem is related with windows-wifi-configuration-program(zero configuration).

Steve

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Source: https://maker.wiznet.io/forum/9771