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Table of Contents
WIZ550S2E Programmer's Guide 1 ........................................................................................................
Overview 1 .........................................................................................................................................
WIZ550S2E AT Command Set 1 ..........................................................................................................
Responses 1 ....................................................................................................................................
Network Commands 3 .....................................................................................................................
Management Commands 10 ...........................................................................................................
Function Commands 13 ..................................................................................................................
Configuration Tool 14 .........................................................................................................................
Description 14 .................................................................................................................................
Common Configurations 15 .............................................................................................................
Network Configurations 18 ..............................................................................................................
Serial Configurations 21 ..................................................................................................................
Options Configurations 23 ...............................................................................................................
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WIZ550S2E Programmer's Guide
Overview
This page provides detailed information about AT commands set and how to use the Configuration
tool, which retrieves and sets all configurations of WIZ550S2E via Ethernet. Users can change any
value of the WIZ550S2E and communicate with the peer system through TCP(or UDP) socket by
sending AT commands.
2014/07/29 10:12 · jameskim
WIZ550S2E AT Command Set
This section provides a list of WIZ550S2E AT commands and their functions. Users can input
commands and parameters through USART line. Every command starts with “AT”. Any other initial
character will cause an error in return. Commands and parameters are all ASCII characters, i.e. when
you input 'AT+NSTAT', you should input ASCII characters 'A', 'T', '+', 'N', 'S', 'T', 'A', 'T' and 'Enter Key'
which is CR, LF (0x0d, 0x0A).
All commands should be terminated with
CR(0x0D), LF(0x0A)
Some parameters are mandatory and others are optional. Parameters must be entered in the order of
format column given by the command tables. Although the optional parameter is not used, the
comma delimiters ',' must still be included in the command. In most cases, valid commands return the
character [S] and invalid inputs return [F]. The possible responses sent from WIZ550S2E to the user
are described as Responses. Below are examples of user input. As you can see, WIZ550S2E return
“\r\n” back instead of “\r”, which means user (host system) always handle '\r\n' as the only delimiter.
Input by User AT\r\n (0x61 0x74 0x0d 0x0a)
Output from WIZ550S2E [S]\r\n (0x5b 0x53 0x5d 0x0d 0x0a)
Responses
Response Format
[(Type),(Id),(Param1),(Param2),(Param3),(Param4),(Param5),(Param6)]↓(Data)↓
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(Type): Type of response. It can be one of S, D, F, W, R and V.
●
(Id): Socket Identifier. This is the mandatory in Async mode.
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(Param1) ~ (Param6): ): These are included in case of commands retrieving module's setting value.
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↓: This means 'Enter' key as delimiter and CR, LF(0x0d, 0x0a) are its real value.
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(Data): When huge data are needed, 'Data' will be followed in case of Type of response, D and R.
●
Responses are listed below.
Response Description
Success Response [S,(Id),(Param1),(Param2),(Param3),(Param4),(Param5),(Param6)]↓
Command Request Success, outputs with param when it's needed.
Success Dump Response [D,(Id),(Size)]↓(Data)↓
Command Request Success, Outputs large data include 'Enter key' value.
Fail Response [F,(Id),(ErrorCode),(ErrorParam)]↓
Command Request Fail, outputs with param when it's needed.
Wait Response [W,(Id)]↓
Command is started with ID in Async mode.
Data Receive Response [R,(SockId),(ReceivedSize),(SrcIP),(SrcPort)]↓(Data)↓
Outputs the received data.
Event Response [V,(Id),(EventCode)]↓
Event occurred.
(Id): 0 - System ID or 0~n - Socket Number
●
(Size): Byte size of the output data
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(ErrorCode): Error Code
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(ErrorParam): Value of description for Error Code
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(SockId): Socket Identifier of the socket which received data
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(ReceivedSize): Byte size of received data
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(SrcIP): Sender's IP address. This is mandatory in case of UDP & TCP Client. In case of TCP Server
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this is omitted.
(SrcPort): Sender socket's port number. This is mandatory in case of UDP & TCP Client.In case of TCP
●
Server this is omitted.
(EventCode): Indication of which event happened.
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Error Code
General Error Code
Code Error Name Description
0 ERR_Undefined Undefined Error
1 ERR_WrongOperator Wrong Operator
2 ERR_WrongCommandSign Wrong Command Sign
3 ERR_WrongArguments Wrong Arguments
4 ERR_OurofRange Parameter is out of Range
5 ERR_FuncDisabled This function is disabled
6 ERR_NotAllowed Not Allowed
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Code Error Name Description
7 ERR_CommandBusy Command Busy
8 ERR_CommandTimeout Command Timeout
Socket Error Code
Code Error Name Description
10 ERR_SockNotAvail Socket Not Available
11 ERR_SockClosed Socket Closed
12 ERR_SockPortNumNotAvail Port Not Available
13 ERR_SockNotConnected Not Connected
14 ERR_SockWrongAddr Wrong Address
15 ERR_SockDataNotAvailable Data Not Available
Other Error Code
Code Error Name Description
20 ERR_NoFreeMem No Free Memory
Event Code
Socket Event Code
Code Socket Event Name Description
0 EVENT_SockConnected Connected. Socket transition from Listen state to established state
1 EVENT_SockDisconnected Disconnected. Socket transition from established state to
disconnected state
2 EVENT_SockClosed Closed. Socket transition to closed state
3 EVENT_SockDataRcvd Data Received. The corresponding socket received data from its
peer
Network Commands
Command Prop. Input Parameter Response
AT+NSET
None or ? [S,,S,(IP),(SN),(GW),(DNS)]
[S,,D]
=S,(IP),(SN),(GW),(DNS) [S]
D [S]
-num,Param [S]
AT+NSTAT None or ? [S,,S/D,(IP),(SN),(GW),(DNS)]
AT+NMAC None or ? [S,,(MAC)]
= (MAC) [S]
AT+NOPEN =S/C/U,(SrcPort),(DstIP),(DstPort) [W,(SockId)]
[S,(SockId)]
A
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Command Prop. Input Parameter Response
AT+NCLOSE = (SockId) [W,(SockId)]
[S,(SockId)]
AT+NSEND = (SockId),(size),(DstIP),(DstPort) [W,(SockId)]
[S,(SockId)]
AT+NSOCK None or ? [D,,(Size)]↓(Data)
= (SockId) [S,,S/C/U,(SrcPort),(DstIP),(DstPort)]
AT+NSET
Format:
●
AT+NSET=<DHCP>,<IP>,<SN>,<GW>,<DNS>
Meaning: Network Configuration
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<DHCP>: Static/DHCP
Parameter Meaning
S DHCP Off, Static
D DHCP On, DHCP Client
<IP>: IP Address (Optional)
<SN>: Subnet Mask (Optional)
<GW>: Gateway Address (Optional)
<DNS>: DNS Address(Optional)
Response:
●
[S]
Example 1:
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AT+NSET\r\n
AT+NSET?\r\n
Meaning: Get Current Network Setting
●
Note that <IP>,<SN>,<GW>,<DNS> address of response are not actual addresses, but
addresses stored in the memory. So when DHCP is on, they are usually different from actual
addresses.
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Response:
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[S,,S,192.168.11.100,255.255.255.0,192.168.11.1,8.8.8.8]
[S,,D]
Example 2:
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AT+NSET-2,192.168.11.110\r\n
Meaning: Update Second Parameter
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Response:
●
[S]
AT+NSTAT
Format:
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AT+NSTAT
AT+NSTAT?
Meaning: Display Current Network Status
●
Response:
●
[S,,<DHCP>,<IP>,<SN>,<GW>,<DNS>]
Example 1:
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AT+NSTAT\r\n
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AT+NSTAT?\r\n
Meaning: Display Current Network Status
●
Response:
●
[S,,S,192.168.11.100,255.255.255.0,192.168.11.1,8.8.8.8]
[S,,D]
AT+NMAC
Format:
●
AT+NMAC
AT+NMAC?
Meaning: Get MAC Address
●
Response:
●
[S,,<MAC>]
Example 1:
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AT+NMAC=00:08:dc:1d:bb:8b\r\n
Meaning: Set MAC Address
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Response:
●
[S]
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Example 2:
●
AT+NMAC\r\n
AT+NMAC?\r\n
Meaning: Get MAC Address
●
Response:
●
[S,,00:08:dc:1d:bb:8a]
AT+NOPEN
Format:
●
AT+NOPEN=<SockType>,<SrcPort>,<DstIP>,<DstPort>
Meaning: Initialize Socket
●
<SockType>: Socket Type
Parameter Meaning
S TCP Server Socket
C TCP Client Socket
U UDP Socket
<SrcPort>: Local Port Number
<DstIP>: Destination IP Address
<DstPort>: Destination Port Number
Response:
●
[W,(SockId)]
[S,(SockId)]
Example 1:
●
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AT+NOPEN=C,3000,192.168.11.100,3000\r\n
Meaning: Create TCP Client Socket
●
Response:
●
[W,0]
[S,0]
[W,0]
[F,,1]
Example 2:
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AT+NOPEN=S,5000,,\r\n
Meaning: Create TCP Server Socket
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Response:
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[S,,0]
AT+NCLOSE
Format:
●
AT+NCLOSE=(SockId)
Meaning: Close Socket
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<SockId>: Socket ID
Response:
●
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[W,(SockId)]
[S,(SockId)]
Example 1:
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AT+NCLOSE\r\n
Meaning: Close Socket
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Response:
●
[W,0]
[S,0]
[F,,11]
AT+NSEND
Format:
●
AT+NSEND=<SockId>,<size>,<DstIP>,<DstPort>
Meaning: Send Data
●
<SockId>: Socket ID
Parameter Meaning
S TCP Server Socket
C TCP Client Socket
U UDP Socket
<SrcPort>: Local Port Number
<DstIP>: Destination IP Address
<DstPort>: Destination Port Number
Response:
●
Indice
