Waveshare WIFI232 User manual

WAVESHARE ELECTRONICS
WIFI232 User Manual
Page 1 of 81
WIFI232 User Manual
Note: this article is based on the firmware version for V5.01.01 and above version of the module,
if the version is lower than this version, some function is not supported.

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WIFI232 User Manual
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Table Of Contents
1Quick Start...................................................................................................................................6
1.1 Hardware connect........................................................................................................6
1.2 Network connection......................................................................................................7
1.3 communication test ......................................................................................................8
2Product Overview........................................................................................................................9
2.1 General Description......................................................................................................9
2.2 Device Features ...........................................................................................................9
2.3 Device Paremeters.....................................................................................................10
2.4 KeyApplication...........................................................................................................11
2.5 Package Information ..................................................................................................11
2.5.1 Recommended Reflow Profile............................................................................ 11
2.5.2 Device Handling Instruction (Module IC SMT Preparation)...............................11
2.5.3 Shipping Information...........................................................................................12
3Hardware Introduction...............................................................................................................12
3.1 Pins Definition.............................................................................................................13
3.1.1 WIFI232 Pins Definition......................................................................................13
3.2 Mechanical Size.........................................................................................................14
3.2.1 WIFI232...............................................................................................................14
3.3 Antenna.......................................................................................................................15
3.3.1 On-board ChipAntenna......................................................................................15
3.3.2 External Antenna.................................................................................................16
3.4 Evaluation Kit..............................................................................................................16
3.5 Hardware Reference Design......................................................................................18
3.5.1 HardwareTypicalApplication .............................................................................18
3.5.2 10/100M Ethernet Interface................................................................................19
3.5.2.1 Ethernet Connection with Transformer................................................19
3.5.2.2 Ethernet Connection without Transformer...........................................19
3.5.3 UART Interface....................................................................................................20
3.5.4 Power Interface...................................................................................................21
4Modules Function Description ..................................................................................................21
4.1 User configuration process........................................................................................21
4.2 Working mode.............................................................................................................22
4.2.1 Transparent Mode...............................................................................................22
4.2.2 Serial command mode........................................................................................23
4.2.3 GPIO mode .........................................................................................................24
4.2.4 HTTPD Client mode............................................................................................24
4.3 Wireless Networking...................................................................................................25
4.3.1 STA......................................................................................................................25
4.3.2 AP........................................................................................................................26
4.3.3 AP+STA...............................................................................................................27
4.4 Ethernet Interface Communication............................................................................28
4.4.1 WIFI232 Ethernet Interface Networking (AsAP) ..............................................28
4.4.2 WIFI232 Ethernet Interface Networking (As STA, N-Ver)..................................28

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4.4.3 WIFI232 Ethernet Interface Networking (As STA, Z-Ver).................................29
4.5 WI-FI parameter setting .............................................................................................29
4.5.1 Auto- Frequency Function..................................................................................30
4.5.2 Security................................................................................................................30
4.5.3 Search Function for STA.....................................................................................30
4.5.4 Address Binding..................................................................................................30
4.6 UART Frame Scheme................................................................................................31
4.6.1 UART Free-Frame ..............................................................................................31
4.6.2 UARTAuto-Frame...............................................................................................31
4.7 Network Setting..........................................................................................................31
4.7.1 Socket A..............................................................................................................32
4.7.2 Socket B..............................................................................................................32
4.8 New function...............................................................................................................32
4.8.1 TCP password authentication.............................................................................32
4.8.2 Upload ID ............................................................................................................33
4.8.3 WEB IO................................................................................................................33
4.8.4 Keepalive.............................................................................................................33
4.8.5 Multiple STAparameters.....................................................................................33
4.8.6 Websocket...........................................................................................................33
4.8.7 Fast access Wi-Fi(usr-link).................................................................................34
4.8Palmodic Signal....................................................................................................................36
4.9 Parameters Configuration..........................................................................................36
4.10 Firmware Upgrade......................................................................................................36
5WebAccessing and AT+instruction set ....................................................................................37
5.1 Configuration via WebAccessing..............................................................................37
5.1.1 Open Web Management Interface .....................................................................37
5.1.2 Quick Configure..................................................................................................38
5.1.3 Mode Selection Page..........................................................................................38
5.1.4 AP Interface Setting Page ..................................................................................39
5.1.5 STAInterface Setting Page.................................................................................39
5.1.6 Application Setting Page.....................................................................................40
5.1.7 Ethernet Setting ..................................................................................................42
5.1.8 HTTPD Client Mode............................................................................................42
5.1.9 WEB IO................................................................................................................43
5.1.10 Advanced Page...................................................................................................43
5.1.11 Device Management Page.................................................................................44
5.2 AT+instruction Introduction ........................................................................................44
5.2.1 Configuration Mode.............................................................................................44
5.2.1.1 Switch to Configuration Mode..............................................................45
5.2.2 AT+ Instruction Set Overview.............................................................................45
5.2.2.1 Instruction Syntax Format....................................................................47
5.2.2.2 AT+ Instruction Set...............................................................................48
5.2.2.2.1 AT+E..............................................................................................50
5.2.2.2.2 AT+ENTM......................................................................................50

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5.2.2.2.3 AT+NETP......................................................................................50
5.2.2.2.4 AT+UART......................................................................................50
5.2.2.2.5 AT+UARTF....................................................................................51
5.2.2.2.6 AT+UARTFT..................................................................................51
5.2.2.2.7 AT+UARTFL..................................................................................52
5.2.2.2.8 AT+TMODE...................................................................................52
5.2.2.2.9 AT+WMODE..................................................................................52
5.2.2.2.10 AT+WSKEY...................................................................................52
5.2.2.2.11 AT+WSSSID..................................................................................53
5.2.2.2.12 AT+ WSLK.....................................................................................53
5.2.2.2.13 AT+WEBU.....................................................................................54
5.2.2.2.14 AT+WAP........................................................................................54
5.2.2.2.15 AT+WAKEY...................................................................................54
5.2.2.2.16 AT+HIDESSID...............................................................................55
5.2.2.2.17 AT+MSLP......................................................................................55
5.2.2.2.18 AT+WSCAN ..................................................................................56
5.2.2.2.19 AT+ TCPLK...................................................................................56
5.2.2.2.20 AT + TCPDIS.................................................................................56
5.2.2.2.21 AT+ WANN....................................................................................57
5.2.2.2.22 AT+ LANN.....................................................................................57
5.2.2.2.23 AT+DHCPDEN..............................................................................57
5.2.2.2.24 AT+ DHCPGW ..............................................................................58
5.2.2.2.25 AT+ TCPTO...................................................................................58
5.2.2.2.26 AT+ MAXSK..................................................................................58
5.2.2.2.27 AT+TCPB......................................................................................59
5.2.2.2.28 AT+TCPPTB..................................................................................59
5.2.2.2.29 AT+TCPADDB...............................................................................59
5.2.2.2.30 AT+TCPTOB.................................................................................60
5.2.2.2.31 AT+TCPLKB..................................................................................60
5.2.2.2.32 AT+EPHY......................................................................................60
5.2.2.2.33 AT+STTC.......................................................................................60
5.2.2.2.34 AT+DOMAIN .................................................................................61
5.2.2.2.35 AT+FUDLX....................................................................................61
5.2.2.2.36 AT+MMID ......................................................................................61
5.2.2.2.37 AT+IDFIR.......................................................................................61
5.2.2.2.38 AT+IDEVE.....................................................................................62
5.2.2.2.39 AT+AABR......................................................................................62
5.2.2.2.40 AT+RELD......................................................................................63
5.2.2.2.41 AT+Z..............................................................................................63
5.2.2.2.42 AT+MID .........................................................................................63
5.2.2.2.43 AT+VER.........................................................................................63
5.2.2.2.44 AT+H..............................................................................................63
5.2.2.2.45 AT+ HTTPURL..............................................................................63
5.2.2.2.46 AT+ HTTPTP.................................................................................64

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5.2.2.2.47 AT+ HTTPPH................................................................................64
5.2.2.2.48 AT+ HTTPCN................................................................................64
5.2.2.2.49 AT+ HTTPUA................................................................................64
5.2.2.2.50 AT+WSSSIDA...............................................................................65
5.2.2.2.51 AT+WSSSIDB...............................................................................65
5.2.2.2.52 AT+WSSSIDC...............................................................................65
5.2.2.2.53 AT+WSKEYA.................................................................................65
5.2.2.2.54 AT+WSKEYB................................................................................66
5.2.2.2.55 AT+WSKEYC................................................................................66
5.2.2.2.56 AT+ WSLQ....................................................................................67
6WIFI232 Usage Introduction.....................................................................................................67
6.1 Module Debug............................................................................................................68
6.1.1 Software DebugTools.........................................................................................68
6.1.2 Network Connection............................................................................................68
6.1.3 Debug..................................................................................................................68
6.2 Use Cases..................................................................................................................71
6.2.1 Wireless ControlApplication...............................................................................71
6.2.2 Remote Management Application ......................................................................71
6.2.3 Transparent Serial PortApplication....................................................................72
6.2.4 Wireless DataAcquisition CardApplication.......................................................72
Appendix A: Questions and Answers.........................................................................................74
Q1: How to configure transparent serial port application (TCP protocol) with two WIFI
modules?...................................................................................................................................74
Q2: Where to Set WIFI Module LAN IP and WAN IP through Web Page？...........................74
Q3: How to configure transparent serial port application (UDP protocol) with two WIFI
modules?...................................................................................................................................75
Q4: Where to set WIFI232 module network protocol (TCP/UDP)?.........................................76
Q5: How to configure transparent serial port application: Two WIFI modules all configured as
STAand connection throughAP?.............................................................................................77
Q6: How to avoid IP address confliction when apply WIFI232 module?.................................78
Q7: PC works as server, all WIFI modules works as data acquisition card and connect with
PC, how to configure this application?.....................................................................................78
Q8: WIFI module support UDP multicast?...............................................................................79
Q9:WIFImodule operates in STAmode, the PC how to get the IP module?..........................80
Appendix b: external power shutdown mode reference design ............................................81
Appendix c: Disclaimer.....................................................................................................................81

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WIFI232 User Manual
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1 Quick Start
WIFI232 series product is used to transmit data between RS232 and WIFI TCPIP transparently,
user can update the product to WIFI control without knowing the WIFI and TCPIP detail. All the
convert work is done by the module. For users, the RS232 side is only as a serial device,the WIFI
side is TCPIPSocket data. User can setup the work detail by sample settings which can setup via
inside web pages or RS232 port. The setup work only need do once, then it will save the setting
forever.
This chapter is a user guide for WIFI232 series products. We suggest users follow the guide to
test module at first, and will have a good understanding of the modules. Users can also choose
the chapter which you are interested in to read. For specific details and instructions, please refer
to the following chapters.
1.1 Hardware connect
In order to test WIFI module, we need connect module RS232 to PC and also WIFIto PC.
In order to test the communication between serial and WIFI network, we need to connect the
serial port to PC, and also connect WIFI networks to PC. Due to the special need both WIFI and
serial, we use PC which add USBWIFI network Card such as the following picture.
Figure 1 hardware connection diagram
About the serial connection, because the module RS232 is 3.3V TTL level, the computer can not
connect to module directly, the user needs to have a TTL to RS232 adapter cable and then
connect to the computer. in order to facilitate the test, we provide WIFI232 evaluation board for
users to choose.

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1.2 Network connection
The following is the WIFI232 module example,Other modules are the same.Open Wi-Fi, search
network, as shown in below, WIFI232 _3378(A/B determined according to the specific type of
module, XXXX is the MAC address after the four) is the default network name (SSID) of the
module.
Figure 2 WIFI Search
Join the network, choose to automatically obtain IP, WIFI module supports DHCP Server feature
and is enabled by default.

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Figure 3 WIFI connection
Now, nlink led of WIFI232 Evaluation Board is lighting.
1.3 communication test
Module’s default setting:
SSID:WIFI232;
Encryption mode:open，none;
UART:57600,8,1,None;
Network parameters：TCP,Server,8899,10.10.100.254;
IP:10.10.100.254;
We just need to follow the parameters of the corresponding set of network communication
parameters, you can make serial <--> WIFIcommunication, the steps are as follows:
1. Open test software TCP232-Test;
2. COM Settings area (left):
Choose COM port witch has connect the module, there is COM10, choose band rate to 57600,
this is the default band rate of WIFI module, Click Open COM port.
3. Net Settings area (right):
Choose TCP client mode, Server IP write 10.10.100.254, it is the WIFI default IP address, Server
port to 8899, It is the default Port the WIFI module listen, Click Connect to link to the module.
Now, you can test send data between RS232 and WIFI.
COM port to WIFI: PC RS232 -> Module RS232 -> ModuleWIFI -> PC WIFI.
WIFIto COM port: PC WIFI -> Module WIFI -> Module RS232 -> PC RS232.

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Figure 4 serial / network transmission test
2 Product Overview
2.1 General Description
WIFI232 module is an integration of 802.11 b/g/n wi-fi module,which provide a wireless interface
to any equipment with a Serial interface for data transfer.
The module used to MAC, baseband chip, RF transceiver unit, as well as the power
amplifier;Embedded firmware support wi-fi protocols and configuration, as well as the network
TCP/IP protocol stack.
WIFI232 uses the industry's highest performance embedded industrial structure, and for the
application of smart furniture, smart grid, handheld devices, personal medical, industrial control,
etc. These data fields, do a professional optimization.
WIFI232 as a hot spot can accommodate 32 clients simultaneously wi-fi access, but also can
accommodate 32 TCP client.
2.2 Device Features
Support IEEE802.11b/g/n Wireless Standards
Support TCP/IP/UDP Network Protocols

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Support UART/GPIO/Ethernet Data Interface
Support Work As STA/AP/AP+STA Mode
Support Router/Bridge Mode Networking
Support Internal/External Antenna Option
Support Transparent Transmission Mode
Support AT+ Instruction Set for Configuration
Support Friendly Web Configuration Page
Support Palmodic Signal
Support UART Auto-Frame Function
Single +3.3V Power Supply
FCC/CE Certificated
2.3 Device Paremeters
Table 1 WIFI232 Module Technical Specifications
Class
Item
Parameters
Wireless
Parameters
Certification
FCC/CE
Wireless standard
802.11 b/g/n
Frequency range
2.412GHz-2.484GHz
Transmit Power
802.11b: +20 dBm (Max.)
802.11g: +18 dBm (Max.)
802.11n: +15 dBm (Max.)
Configurable
Receiver Sensitivity
802.11b: -89 dBm
802.11g: -81dBm
802.11n: -71dBm
Antenna Option
External:I-PEX Connector
Internal:On-board chip antenna
Hardware
Parameters
Data Interface
UART: 300bps - 460800bps
GPIOs
Ethernet: 100Mpbs
Operating Voltage
3.3V (+/-5%)
Operating Current
170mA~300mA
Operating
Temperature
-25℃- 85℃
Storage Temperature
-40℃- 125℃
Dimensions and Size
25×40×8mm
Software
Parameters
Network Type
Station /AP mode/STA+AP
Security Mechanisms
WEP/WAP-PSK/WAP2-PSK/WAPI
Encryption
WEP64/WEP128/TKIP/AES