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.
|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.|
|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
|Wi-Fi LED|| Indicate Wi-Fi Association
♦ LOW(ON) : Wi-Fi is associated
♦ HIGH(OFF) : Wi-Fi is not associated
|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|
|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
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.
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.
|Default information of WizFi250 AP Mode|
LED results of WIZFI250:
|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|
This section explains how to connect to AP by using serial command.
The module start by default in command mode. 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 (AT command for setting WiFi association) [OK] AT+WSEC=0,,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)
Now, the green mode LED is on, and data can be exchanged from Serial I/F to connected client and back. This mode is called data mode.
To exit this data mode or to enter into command mode again you need to send a single '+++' string without CR or LF (0x0D, 0x0A) - just the three 0x2B = '+' characters.