Micros WizFi250 User manual

2014/03/13 09:47 1/8 WizFi250 Quick Start Guide
- http://wizwiki.net/wiki/
WizFi250 Quick Start Guide
WizFi250 Evaluation Board
The WizFi250 EVB is the evaluation board for testing WizFi250 and prototyping development.
WizFi250 EVB is composed of a WizFi250 evaluation board and a WizFi250 module.
Feature Identification
Button Description
WizFi250 Reset Through this button, user can restart WizFi250 module.
Function
Through the function button, user can enter specific mode without AT
Command.
♦ Factory Recovery : When doing Boot or Reset, press the button over 3.5
seconds
♦ AP Mode : When module is working, press it once.
♦ OTA Mode : When module is working, press it twice.
♦ Factory Default : When module is working, press it three times.
Arduino Board Reset With this button, user can restart Arduino board.
LED Description
UART RX/TX Indicate UART RX/TX Status
Power LED Indicate Power On/Off of WizFi250
Mode LED
Indicate Data/Command Mode
♦ LOW(ON) : Data Mode
♦ HIGH(OFF) : Command Mode

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Wi-Fi LED
Indicate Wi-Fi Association
♦ LOW(ON) : Wi-Fi is associated
♦ HIGH(OFF) : Wi-Fi is not associated
Pin Description
BOOT
Enter boot mode
♦ SHORT : Start in boot mode
♦ OPEN : Start in application mode
5V Power Alternative choice for 5V power supply
GPIO Pin Through this pin, user can use GPIO signal
Interface Description
UART1 Interface Alternative choice for Serial interface.
SPI Interface Through these pins, user can control SPI interface.
USB Interface
This provides power supply & Serial interface
Default serial information:
♦ Baud rate : 115200
♦ Data rate : 8
♦ Stop bits : 1
♦ Parity : None
♦ Flow control : None
Interface Board PIN Map
Interface Board Dimension

2014/03/13 09:47 3/8 WizFi250 Quick Start Guide
- http://wizwiki.net/wiki/
2013/08/28 15:45 · kaizen
Start Serial to Wi-Fi
This chapter explains how to set WizFi250 in order to exchange data with peer system. This picture
shows the environment for using Serial to Wi-Fi as example. In this example, WizFi250 is set to the
TCP server and peer system is set to the TCP client. And then data is exchanged between WizFi250
and the peer system.

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Using Function Button & Web Server Interface
This section explains how to set WizFi250 using web server in order to use serial to Wi-Fi application.
(If you Use the function button, you can launch web server easily.)
Procedure for setting serial to Wi-Fi is explained below.
1. Press the “Function Button” one time in order to run AP mode and launch the web server. If
●
WizFi250 is changed to AP mode successfully, Wi-Fi LED will be on and you can see WizFi250’s SSID
by your PC
Default information of WizFi250 AP Mode
SSID WizFi250_AP_0008DCXXXXXX
Security WPA2 Mixed
Security Key 123456789
IP Address 192.168.12.1
Gateway Address 192.168.12.1
LED results of WIZFI250:

2014/03/13 09:47 5/8 WizFi250 Quick Start Guide
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2. Connect to WizFi250’s SSID …by inputting default password (123456789) and WizFi250’s IP
●
address or URL (wizfi250.wiznet.com) in your web browser. After that input the user id and user
password. ( Default ID : admin, Default Password : admin )
3. If you select “S2W Setting & Scan Network” menu, …the web page will be shown as below.
●
If WizFi250 is set successfully, it shows the success message … as in the following picture on the
right.
If you select <Next_Step> button, you can move to next page.
WizFi250 TCP/IP Settings guide
Modes AP or Station (connect to AP)
Protocol TCP/UDP (Server / Client)
Remote IP Connecting device's IP address
Remote Port Connecting device's Port
Local Port Module's Port

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4. Select WizFi250's DHCP Mode.
●
It includes DHCP or stactic IP setting.
5. Firstly, input the password of …the AP you want to join and click “Join“ button to connect to that
●
AP.
After setting up, you will see “Device Started Web server and access point stopped. See
UART for further information.” message in web browser. It means that WizFi250 will try to
connect to the selected AP.
Important note: If you input the wrong password of AP, you need to redo all procedures.
6. WizFi250 will be associated … to the AP you select… and you can use TCP server in WizFi250.
●

2014/03/13 09:47 7/8 WizFi250 Quick Start Guide
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This picture is the serial message when WizFi250 has set successfully.
Using Serial Command
This section explains how to connect to AP by using serial command.
If the user inputs the AT commands below, WizFi250 will be connected to AP by DHCP and run as TCP
server.
In this example, the settings of AP will be created as below:
( SSID : WizFiDemoAP, Security : WPA2, Key : 12345678 )
AT (Sent AT command with 0x0d (Hex of Enter button))
[OK] (response meaning successful execution)
AT+WSET=0,WizFiDemoAP ,,6 (AT command for setting WiFi association)
[OK]
AT+WSEC=0,WPA2,12345678 (AT command for setting WiFi security)
[OK]
AT+WNET=1 (AT command for setting DHCP)
[OK]
AT+WJOIN (AT command executing AP association)
Joining : WizFiDemoAP
Successfully joined : WizFiDemoAP
[Link-Up Event]
IP Addr : 192.168.3.104
Gateway : 192.168.3.1
[OK]
AT+SCON=SO,TSN, , ,5000,1 (AT command for setting TCP Server)
[OK]
[CONNECT 0] (When TCP connection is done, it shows this message)
Exchanging data with a peer system
This section explains how to exchange data between WizFi250 and Peer System.

Last update: 2013/09/30 16:09 products:wizfi250:wizfi250qsg:start http://wizwiki.net/wiki/doku.php?id=products:wizfi250:wizfi250qsg:start
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This example describes the structure of data flow.
After TCP connection is done and if WizFi250 receives serial data, the serial data will be sent to peer
system immediately and Wizfi250 can receive data from peer system.
2013/08/28 16:43 · kaizen
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Last update: 2013/09/30 16:09