WizFi220-EVB WIZnet, WizFi220-EVB Datasheet - Page 28

• Manufacturer Part Number: WizFi220-EVB
• Description: WiFi / 802.11 Development Tools EVALUATION BOARD FOR WIZFI220
• Manufacturer: WIZnet

Specifications of WizFi220-EVB

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: WizFi220
• Protocol Supported: 802.11 b/g/n
• Frequency: 2.4 GHz
• Interface Type: I2C, SPI, UART
• Operating Supply Voltage: 3.3 V
• Antenna Connector Type: U.FL
• Modulation Technique: CCK, DSSS

as needed. However, the Adapter does not accept any new TCP/UDP client/server or data
connection requests.
The ATO command (terminated by the ASCII character “O”, not the number 0) is used to
return to data mode.
Applying the “AT+XEHT=1” command (Enable Hardware Trigger), you can change between
data mode and command mode using GPIO 10, without escape sequence (“+++”).
Using D2(GPIO 31), D4(GPIO 28) of WizFi210, you can see if the WizFi210 is associated to
the AP and if serial-to-wifi network channel is normal.
And applying the “AT+XDUM=1” command (Disable UART Message), all UART messages are
blocked in data mode. In this situation, you have to check the signal of GPIO 28 and GPIO
31 to know disassociation or network connection closed.
sent, in order to avoid sending a large number of packets with small payloads onto the
network. The wait time is specified in units of 10 milliseconds. This functionality is available
for both UDP and TCP connections.
The possible responses sent by the Adapter to the serial host are described below.
The Response Codes can be distinguished into codes resulting from the AT Command or
not. There are Carriage Return(\r, 0x0d) and Line Feed(\n, 0x0a) above and below ASCII
STRING. If you send “at” string and Line Feed to the WizFi210,
at + Line Feed (0x61 0x74 0x0d)
You can see the following data.
at + Carriage Return (0x61 0x74 0x0d) + \r\n[OK]\r\n (0x0d 0x0a 0x5b 0x4f 0x4b 0x5d 0x0d 0x0a)
No
WizFi 210 User Manual
(4) Response Codes
In data mode, the Nagle Algorithm Wait Time can be used to buffer any characters to be
1
2
3
4
5
ASCII
CHAR
0
1
2
3
4
Response
S2W_SUCCESS
S2W_FAILURE
S2W_EINVAL
S2W_SOCK_FAIL
S2W_ENOCID
(WIZnet Co., Ltd.)
ASCII STRING
[OK]
[ERROR]
[ERROR: INVALID INPUT]
[ERROR: SOCKET FAILURE]
[ERROR: NO CID]
Meaning
Command Request Success.
Command Request Failed.
Invalid Command or Option or
Parameter.
Socket Operation Failed.
All allowed CID’s in use, so there
was no CID to assign to the new
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