Waveshare WIFI232 User Manual

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WAVESHARE ELECTRONICS

WIFI232 User Manual

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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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Table Of Contents

1 Quick Start ................................................................................................................................... 6

1.1 Hardware connect ........................................................................................................ 6

1.2 Network connection ...................................................................................................... 7

1.3 communication test ...................................................................................................... 8

2 Product Overview ........................................................................................................................ 9

2.1 General Description...................................................................................................... 9

2.2 Device Features ........................................................................................................... 9

2.3 Device Paremeters ..................................................................................................... 10

2.4 Key Application ........................................................................................................... 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

3 Hardware 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 Chip Antenna ...................................................................................... 15

3.3.2 External Antenna ................................................................................................. 16

3.4 Evaluation Kit .............................................................................................................. 16

3.5 Hardware Reference Design...................................................................................... 18

3.5.1 Hardware Typical Application ............................................................................. 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

4 Modules 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 (As AP) .............................................. 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 UART Auto-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 STA parameters ..................................................................................... 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

5 Web Accessing and AT+instruction set .................................................................................... 37

5.1 Configuration via Web Accessing .............................................................................. 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 STA Interface 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

6 WIFI232 Usage Introduction ..................................................................................................... 67

6.1 Module Debug ............................................................................................................ 68

6.1.1 Software Debug Tools ......................................................................................... 68

6.1.2 Network Connection............................................................................................ 68

6.1.3 Debug .................................................................................................................. 68

6.2 Use Cases .................................................................................................................. 71

6.2.1 Wireless Control Application ............................................................................... 71

6.2.2 Remote Management Application ...................................................................... 71

6.2.3 Transparent Serial Port Application .................................................................... 72

6.2.4 Wireless Data Acquisition Card Application ....................................................... 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

STA and connection through AP? ............................................................................................. 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:WIFI module operates in STA mode, 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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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 TCPIP Socket 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 WIFI to 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 USB WIFI 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 <--> WIFI communication, 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 -> Module WIFI -> PC WIFI. WIFI to 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

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Work Mode

Transparent Mode/Serial command

AT command

AT+instruction set

Network Protocol

TCP/UDP/ARP/ICMP/DHCP/DNS/HT TP

Max. TCP Connection

User Configuration

Web Server＋AT command config.

2.4 Key Application

 Remote equipment monitoring  Industrial sensors and controls  Asset tracking and telemetry  Home automation  Medical devices

2.5 Package Information

2.5.1 Recommended Reflow Profile

Figure 5 Reflow Soldering Profile

Table 2 Reflow Soldering Parameter

Note:

1. Recommend to supply N2 for reflow oven.

2. N2 atmosphere during reflow (O2<300ppm).

2.5.2 Device Handling Instruction (Module IC SMT Preparation)

 Shelf life in sealed bag: 12 months, at <30℃ and <60% relative humidity (RH)  After bag is opened, devices that will be re-baked required after last baked with window time

168 hours.

NO.

Item

Temperature (Degree)

Time(Sec)

Reflow Time

Time of above 220

35~55 sec

Peak-Temp

260 max

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 Recommend to oven bake with N2 supplied.  Baked required with 24 hours at 125±5℃ before rework process for two modules, one is

new module and two is board with module.

 Recommend to store at ≦10% RH with vacuum packing.  If SMT process needs twice reflow:

T and reflow Case 1: Wifi module mounted on top side. Need to bake when bottom side process over 168 hours window time, no need to bake within 168 hours. Case 2: Wifi module mounted on bottom side, follow normal bake rule before process. Note: Window time means from last bake end to next reflow start that has 168 hours space.

2.5.3 Shipping Information

Figure 6 Shipping Information

TRAY Size: 420*245*34 mm

Note:

1 tray = 5*20 pcs = 100 pcs 1 box = 2 trays = 2*100 pcs = 200pcs 1 carton = 4 boxes = 4*200 pcs = 800pcs

3 Hardware Introduction

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3.1 Pins Definition

3.1.1 WIFI232 Pins Definition

Figure 7 WIFI232

PHY_TX+

PHY_RX+

nReady/GPIO9

RESET

UART_RTS/GPIO5

UART_TXD/GPIO3

GND

PHY_TX-

PHY_RX-

nReload/GPIO10

nLink/GPIO8

UART_CTS/GPIO6

UART_RXD/GPIO4

3.3V

Figure 8 WIFI232 Pins Map

Table 3 WIFI232 Pins Definition

Description

Name

Directio n

Note 1

Ground--GND

GND

Power

Ground

VCC 3.3V@350mA

3.3V

Power

3.3V @ 350mA power input

UART Data Transmit

UART_TXD

If not use UART function, this 4 pins can be configured as GPIO pins, and can change GPIO pin status through AT command

GPIO

GPIO3

I/O

UART Data Receive

UART_RXD

GPIO

GPIO4

I/O

UART sends request of data transmission

UART_RTS

O GPIO

GPIO5

I/O

UART receives data transmission permission

UART_CTS

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GPIO

GPIO6

I/O

Module reset signal

RESET

“Low ( 0 )” effective reset

input. The reset duration should be kept more than 300ms

WiFi status Indication

nLink

“0”- WIFI connection available “1”- No WIFI connection Can be configured as GPIO.

GPIO

GPIO8

I/O

Indicate the module status of power on process

nReady

“0” or “Palmodic Signal” -

Finish module boot up process;

“1” - Module boot up not

finish.

Can be configured as GPIO.

GPIO

GPIO9

I/O

Restore configuration

nReload

Module will Restore factory default configuration after set

this pin “0” more than 1s,

then set “1”.

GPIO

GPIO10

I/O

Ethernet Input+

PHY_RX+

+1.8V Ethernet Data Interface Support transformer and direct connection (AC couple) mode.

Ethernet Input-

PHY_RX-

Ethernet Output+

PHY_TX+

Ethernet Output-

PHY_TX-

3.2 Mechanical Size

WIFI232 modules physical size (25x40mm) as follows:

3.2.1 WIFI232

WIFI232 module Mechanical Size:

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Figure 9 WIFI232 Mechanical Size

3.3 Antenna

3.3.1 On-board Chip Antenna

WIFI232 supports a built-in antenna options, when customers choose a built-in antenna, must comply with the following built-in antenna module placement of notes and general rules:  Be in the user's PCB board, and the red region ( 6X8mm ) corresponding to the region cannot be

placed components and with GND;

 Antenna must away from the metal, at least to the distance around the higher components above

10MM;

 Antenna cannot be shielded by any meal enclosure; All cover, include plastic, shall away from

antenna at least 10MM;

Figure 10 WIFI232 Chip Antenna Keep Out Region

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Waveshare technological suggestions WIFI232 module be placed in the following areas of user board, in order to reduce the antenna and a wireless signal influence, at the same time, please consult with technology and technical support staff to assist module placement and associated regions of Layout design.

Figure 11 Suggested Module Placement Region

3.3.2 External Antenna

WIFI232 modules support internal antenna and external antenna option for user dedicated application. If user select external antenna, WIFI232 modules must be connected to the 2.4G antenna according to IEEE 802.11b/g/n standards. The antenna parameters required as follows:

Table 4 WIFI232 External Antenna Parameters

3.4 Evaluation Kit

Waveshare provides the evaluation kit to promote user to familiar the product and develop the

detailed application. The evaluation kit shown as below, user can connect to WIFI232 module with the RS-232 UART port, 100M Eth port or Wireless port to configure the parameters, manage the module or do the some functional tests.

Item

Parameters

Frequency range

2.4~2.5GHz

Impedance

50 Ohm

VSWR

2 (Max)

Return Loss

-10dB (Max)

Connector Type

I-PEX or populate directly

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Figure 12 WIFI232 module Evaluation Kit

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3.5 Hardware Reference Design

3.5.1 Hardware Typical Application

Figure 13 WIFI232 Hardware Typical Application

Notes： nRST- Module hardware reset signal. Input. Logics “0” effective.

There is 100K Ohm pull-up resister internal up to 3.3V. When module power up or some issue

happened, MCU need assert nRST signal “0” at least 300ms, then set” 1” to keep module fully

reset.

nReady- Module boot up ready signal. Output. Logics “0” effective.

There is 4.7K Ohm pull-up resister internal up to 3.3V. The module will output “0” “or “Palmodic Signal” after normal boot up. This signal used to judge if module finish boot up and ready for application or working at normal mode.

nLink- Module WIFI connection indication. Output.

There is 4.7K Ohm pull-up resister internal up to 3.3V. When module connect to AP (STA mode) or some WiFi STA connect to module (AP mode), the module will output “0”. This signal used to judge if module already at WiFi connection status.

nReload- Module restore to factory default configuration.Input. Logics “0” effective.

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User can assert nReload signal “0” more than 3‟s through button or MCU pin, then r elease, module will restore to factory default configuration and re-start boot up process. User need add

4.7K~10K Ohm pull-up resister external the module.

UART_TXD/RXD- UART port data transmit and receive signal. There is 1K Ohm pull-down resister internal. User can‟t add pull-up resister at these pins.

3.5.2 10/100M Ethernet Interface

WIFI232 modules provide one 10/100M Ethernet PHY layer interface for data transition or user configuration. This Ethernet support with transformer and without transformer (PHY-to-PHY) 2 kinds of connection.

3.5.2.1 Ethernet Connection with Transformer

User board put Ethernet transformer and RJ-45 connector. This is a general 10/100M Ethernet phy layer connection. The reference design as following:

3.5.2.2 Ethernet Connection without Transformer

For this application, Ethernet will work as internal data transmition interface and save one transformer and RJ45 connector. Ethernet PHY-to-PHY connection will use AC coupled connection. This is a space and cost optimized solution. Hardware reference design as following: Note: VCC signal at reference design shall base on user board PHY chipset voltage level, such as 2.5V power supply for general Ethernet PHY chipset.

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This module Ethernet interface default is for the application with transformer connection. If you need PHY-PHY directly connection, please change the hardware as follows:

1. Weld 0 ohm resistance in red position

2. Remove the component in yellow position

BOT side component TOP side component

Figure 14 Schematic resistance changes

Specific PHY-PHY direct connection reference to user manual chapter 1.3.2.2 application of Ethernet without transformer and AT+FEPTP command The command: AT+FVEW=enable<CR> to open ethernet WAN port function Remark:

1. Only when ethernet as WAN, this command is needed. Module default LAN port.

2. After this command, make sure module WAN IP and LAN IP in different segment. (Modify the ALN IP in AP Settings, modify the WAN IP in STA Settings)

AT+FEPTP=on<CR> Quey/set default ethernet PHY-PHY on/off AT+FEPHY=on<CR> Open ethernet function permanently AT+RELD<CR> Command with “F” need to be affective after AT+RELD

After module reset, command effect, then will not impact by Reload For user‟s design, pls note:

1. Cable connection should be AC coupling, your cable need be pulled up to VCC (fit with PHY chip level)

2. Cable TX connected to RX. In PHY-PHY direct connection, PHY chip dose not support direct/ cross self-adaption

3.Your PHY chip on board should better to be forced into 100M work mode

3.5.3 UART Interface

UART interface is the serial data transmition interface mainly used for WIFI232 modules.

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User can add RS-232 chipset on user board and convert the signal to RS-232 voltage to communicate with outside equipment or sensors. WIFI232 modules UART interface include 4 general signals: TXD/RXD/RTS/CTS. The hardware reference design with RS-232 chipset as following:

Figure 15 Figure 1 UART Interface Reference Design

Notes: TXD pin is also hardware configuration pin internal module. So this pin MUST pull-down

during module power up. WIFI232 modules provide internal pull-down resister, user can‟t add pull-up/pull-down resister on user board, which may cause module can‟t work.

3.5.4 Power Interface

WIFI232 module support single +3.3V power supply. The peak current shall about 350mA and normal WiFi working current shall about 200mA. The power save (WiFi OFF) mode will about 100mA

Decoupling at power pin suggested, At least one 100uF and one 10uF capacitor required at user board and put near module power input pin will increase the reliability and performance.

4 Modules Function Description

4.1 User configuration process

After WIFI232 module electric starter, based on user pre-set parameters, automatically connect to wireless networks and servers, and enter the working mode is set to open in accordance with the default serial port parameters.

The parameters which need to configure include:

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 Wireless Network Parameters

 Wireless Network Name（SSID）  Security Mode  Encryption Key

 TCP/UDP Linking Parameters

 Protocol Type  Link Type（Server or Client）  Target Port ID Number  Target Port IP Address

 Serial Port Parameters

 Baud Rate  Data Bit  Parity (Check) Bit  Stop Bit  Hardware Flow Control

 Work Mode Selection

 Transparent mode/Serial command mode/GPIO mode

The following sections will introduce specific to each part in detail.

4.2 Working mode

4.2.1 Transparent Mode

WIFI232 modules support serial interface transparent transmission mode. The benefit of this mode is achieves a plug and play serial data port, and reduces user complexity furthest. In this mode, user should only configure the necessary parameters. After power on, module can automatically connect to the default wireless network and server.

As in this mode, the module's serial port always work in the transparent transmission mode, so users only need to think of it as a virtual serial cable, and send and receive data as using a simple serial. In other words, the serial cable of users‟ original serial devices is directly replaced with the module; user devices can be easy for wireless data transmission without any changes.

The transparent transmission mode can fully compatible with user‟s original software platform and

reduce the software development effort for integrate wireless data transmission.

Notes: Users also open the serial port hardware flow control (CTS/RTS) function, so that we can make the bit error rate to a minimum.If the user doesn't need hardware flow control function of the serial port, only need to the corresponding pin foot (CTS/RTS) hung up.

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4.2.2 Serial command mode

In this mode, the user can send the serial data to a different server address, this pattern can be use udp or TCP client sends data to the server. Customer MCU send packets according to the following format, parsing module is finished, only the n bytes of data sent to the destination address.When data is returned, not analytical data from serial port output directly.

Table 5 Protocol table of Serial command mode

frame

header

length

functio

byte

Backup

data area

Destinati

on port

Target

address

Data

Sum

check

(n+m+5)

1 2 2 m n

frame header：

0x55 0xAA（Constant）

Length：

Starting from the function byte, to Sum check (does not contain the sum check) all bytes.

High byte at the front

Function byte：

Bit0:（UDP:0 ;TCP:1） Bit1:（Short connection:0;Long connection:1） Bit2:（IP:0;Domain name:1）

Bit7:（cut protocol:0;full protocol:1）Note: currently only supports cut protocol Notes:  Bit1:If it is a short connection, it sends data, and then will be disconnected; if it is long

connection, it sends data, connection will remain, until the re changing the target address.

 Bit2:Indicates that the target address is IP or domain name. If it is IP, the target address is 4

bytes; if the domain name, the target address length for the entire domain name string length (the last byte address is „\0‟, that is the end of the string).

 Bit7:Under the cut protocol, reply frame contains only data; Under the full protocol, reply

frame has "failed to send", "waiting for", "UDP radio response equipment IP" frame data.

Backup data area:

 First byte:If it is a short connection, this position is TCP waits for the timeout time (1-255), if

the send command is completed, did not receive a response, then wait a few seconds and the corresponding, if 5, said to wait for the 5S to disconnect; if the sending command, immediately receive the returned data, then immediately disconnected; if it is long connection, this position is 0x00.

 Second byte:Reserve

Destination port:

Little endian, low byte in the former,such as port 23, here are 0x17 0x00 Target address:

If it is IP, is 4 bytes, for example, 192.168.0.7 said 0x07 0x00 0xA8 0xC0; if it is a domain name, then the address of indefinite length,ending with the‟\0'.

Data:

Variable length,the maximum not exceeding 1000bytes.

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Sum check:

From the function word to check byte (does not contain a check byte), add Sum check. The following is an example of a specific application:

send data:0x55 0xaa 0x00 0x0a 0x00 0x00 0x00 0x21 0x00 0x85 0x00 0xA8 0xC0 0x01 0x0f

Length:0x00 0x0a

Function byte:0x00 (UDP;Short connection;IP;cut protocol)

Destination port:0x21 0x00(33)

Target address:0x85 0x00 0xA8 0xC0 (192.168.0.133)

Data:0x01(data length :1)

Sum check:0x0f (0x00+0x00+0x00+0x21+0x00+0x85+0x00+0xA8+0xC0+0x01=0x0f)

4.2.3 GPIO mode

WIFI232 module support GPIO mode:At GPIO,UART (TXD/ RXD/CTS/RTS) defined as GPIO and others (Ready/Link/) also defined as GPIO pin. When module works at GPIO mode, PC and other equipments can setup connection (TCP/UDP) through WiFi, then read/write GPIO information through command.

 GPIO n IN, Set GPIOn as input, Response GPIO OK or GPIO NOK;  GPIO n OUT 0, Set GPIOn as output and output ‘0’, Response GPIO OK or GPIO NOK;  GPIO n OUT 1, Set GPIOn as output and output ‘1’, Response GPIO OK or GPIO NOK;  GPIO n SW, Set GPIOn as output and switch the output status, Response GPIO OK or

GPIO NOK;

 GPIO n PWM m1 m2, Set GPIOn output a wave: m1 is ‘high’ duration and m2 is ’low’

duration (Time unit is ‘ms’ and minimal is 10ms), Response GPIO OK or GPIO NOK;

 GPIO n GET, Read GPIOn status, Response I0,I1,O0,O1, means” input low”,” input

high”,”output low”,”output high” Notes: n can be 3, 4, 5, 6, 8, 9 corresponding module pin. GPIO 4 can only defined as input and GPIO 3 can only defined as output. GPIO READ returns all current IO status, and GPIO n GET said method. Such as, I1I1I0I0I0I0O1, I said input, O output. 0 low, 1 express high.4 pin is negated. Read the 1 actual 0 actual 1, read the 0.

4.2.4 HTTPD Client mode

This mode is used to send data to the HTTP server. After setting the HTTP header format by webpage or AT command, the data sent each time by UART will add the HTTP header automatically.Convenient for the user directly submit data or read data from the HTTP server. Below is the specific application, for example: The first set HTTP parameters using AT instructions. AT+HTTPURL=192.168.1.1,80 The serveraddress and portsettings AT+HTTPTP=POST Set the HTTP type, GET, PUT or POST AT+HTTPPH=/set Set the path,the mostis50 bytes AT+HTTPCN=keep-alive Set the Connection,maximum length of 20bytes AT+HTTPUA=lwip13.2 Set the User-Agent,maximum length of 20bytes

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If the sending data is 1234.In the 80 port of 192.168.1.1 will receive the following data POST /set HTTP /1.1 Connection:keep-alive User-Agent:lwip1.3.2 Content-Length:4 Host:192.168.1.1:80

1234

If the HTTP type is GET, the 80 port 192.168.1.1 receive data POST /set1234 HTTP /1.1 Connection:keep-alive User-Agent:lwip1.3.2 Content-Length:0 Host:192.168.1.1:80 Data received from server will be directly sent to the serial port,without any treatment.

4.3 Wireless Networking

WIFI232 module can be configured as both wireless STA and AP base on network type. Logically there are two interfaces in WIFI232. One is for STA, and another is for AP. When WIFI232 works as AP, other STA equipments are able to connect to wireless LAN via WIFI232 module. Wireless Networking with WIFI232 is very flexible. Following figure shows the functional architecture of WIFI232 module:

Figure 16 WIFI232 Functional Architecture

Notes: AP: that is the wireless Access Point, the founder of a wireless network and the center of the

network nodes. The wireless router we use at home or in office may be an AP. STA: short for Station, each terminal connects to a wireless network (such as laptops, PDA and other networking devices) can be called with a STA device.

4.3.1 STA

Infrastructure: it‟s also called basic network. It built by AP and many STAs which join in. The characters of network of this type are that AP is the center, and all communication between STAs is transmitted through the AP. The figure following shows such type of networking.

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Figure 17 WIFI232 Basic Wireless Network Structure

4.3.2 AP

Because WIFI232 can be set to AP, can also be set to STA, so the WIFI232 can be achieved easily wireless ad hoc network.

As showing in the figure below, WIFI232 (1) can be treat as an AP, and WIFI232(2), WIFI232 (3) and the laptop are STAs connected to WIFI232 (1). Meanwhile, all WIFI232 modules can connected to user device via UART interface. All WIFI232 modules can be operated and managed through the laptop. So it is convenient to O&M all WIFI232 modules. Moreover, in such Adhoc network structure, the whole coverage of a wireless network can be extended easily.

Figure 18 WIFI232 STA Network Structure

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4.3.3 AP+STA

WIFI232 module support AP+STA network mode, means module support one AP interface and one STA interface at the same time, as following figure,

Figure 19 WIFI232 AP+STA Network Structure

When module enables AP+STA function, Module‟s STA interface can connect with router and

connect to TCP server in the network. At the same time, module‟s AP interface is also active and

permit phone/PAD to connect through TCPB, then phone/PAD can control user device and and setting the module parameters, The advantage of AP+STA mode is:  Users can easily setting and track user device through Phone/PAD and not change the

orginal network setting.  Users can easily setting module‟s parameters through WiFi when module works as STA

mode.

AP+STA Mode Setting:

AP+STA mode need serial AT command to enable as follows:

 AT+FAPSTA=on, Enable AP+STA mode;  Then, when you configure module works as STA mode, it‟s AP interface still active;

AP+STA Mode Notes:

When user enable AT+STA function,the STA port need to keep connected with other router(AP), or STA port will have to scan the AP frequently ,which will affect AP port function and may cause some date loss. So ,if user confirm STA port can't connect with AP at some time,user can disable the STA scan through the following command:  AT+STTC=on/off,on:Scan AP;off:No Scan AP. After re-start module,this command not saved;  AT+FSTTC=on/off; This command is saved after re-staring the module;

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4.4 Ethernet Interface Communication

WIFI232 module provides one 100M Ethernet interface. With this Ethernet interface, user can easily realize the three interface (WiFi, UART, and Ethernet) intercommunication and networking. WIFI232 module can configured as Bridge Mode or Router Mode base on different networking technology.

Notes: As the Ethernet mode will increase additional consumption, so it is default closed. If you need this function, pls use AT+FEPHY=on to open it and RELD can‟t change this. For different application, WIFI232 need version switch via commands (such as following description of N-ver and Z-ver). With command AT+FVER=n to switch to N-ver and with command AT+FVER=z to switch to Z-ver.

4.4.1 WIFI232 Ethernet Interface Networking (As AP)

Figure 20 WIFI232 Ethernet Interface Networking (As AP)

WIFI232 module works as AP and also the center of this network. All devices‟ IP address in this network shall use the same network segment with WIFI232 and they can ntercommunication with this method.

4.4.2 WIFI232 Ethernet Interface Networking (As STA, N-Ver)

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Figure 21 WIFI232 Ethernet Interface Networking (As STA, N-Ver)

WIFI232 module works as STA (Software is N-Version), and module set as router mode. When module connect to AP, it will get wireless port IP address from AP (For example: 192.168.1.100). At the same time, module also form a subnet (Default 10.10.100.254) and all devices connected to module Ethernet interface will get assigned IP address (For example: 10.10.100.101).So as shown, PC1 at internal subnet can initiate a connection to PC2 (For WIFI232 works as router mode), but PC2 can‟t active initiate a connection to PC1.

4.4.3 WIFI232 Ethernet Interface Networking (As STA, Z-Ver)

Figure 22 WIFI232 Ethernet Interface Networking (As STA, Z-Ver)

For above networking, WIFI232 module works as STA（Firmware is Z-Version）,and module configured as bridge mode. When module connect to AP, all devices connected to module Ethernet interface will get assigned IP address from AP (For example: 192.168.1.101).For module works as bridge mode, it can be treated as a transparent device and PC1, PC2 can communicate without any limit. But in this networking, WIFI232 module needs assign a static LAN IP address (For example: 192.168.1.10) if module also needs communication with AP or configuration through web page.

4.5 WI-FI parameter setting

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4.5.1 Auto- Frequency Function

When module works as STA, WIFI232 will adjust its wireless channel to keep the same channel with associated AP and connect in. When module works as AP and WIFI232 enable Auto-frequency function, then when module boot up, it will select the best wireless channel based on surrounding environment.

4.5.2 Security

WIFI232 module supports multiple wireless encryption mechanisms, and enables to protect the security of user‟s data transmission, the mechanisms include:

 WEP  WPA-PSK/TKIP  WPA-PSK/AES  WPA2-PSK/TKIP  WPA2-PSK/AES

4.5.3 Search Function for STA

When using web configuration STA Interface Setting Page, user can push “Search” button to find

surrounding AP, and find a AP to associated.

Figure 23 Search page

4.5.4 Address Binding

WIFI232 module supports the feature of binding the BSSID address of target network. According to the provisions of 802.11 protocol, different wireless networks can have a same network name (i.e. SSID / ESSID), but must correspond to a unique BSSID address (i.e. MAC address). Illegal intruders can create a wireless network with the same SSID / ESSID, it will make STAs in the network to join to the illegal AP, thereby and then network leakage happen.

Users can prevent STA from joining to illegal network by binding the BSSID address, to improve wireless network security.

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4.6 UART Frame Scheme

4.6.1 UART Free-Frame

WIFI232 support UART free-frame function. If user select open this function, module will check the intervals between any two bytes when receiving UART data. If this interval time exceeds defined value (50ms default), WIFI232 will think it as the end of one frame and transfer this freeframe to WiFi port, or WIFI232 will receive UART data until 4K bytes, then transfer 4KB frame to WiFi port.

WIFI232‟s default interval time is 50ms. User can also set this interval to fast (10ms) through AT command. But user have to consider if user MCU can send UART data with 10ms interval ,or the UART data may be divide as fragment.

Through AT command: AT+FUARTTE=fast/normal, user can set the interval time: fast (10ms) and

normal (50ms). This command is factory default setting command and AT+RELD can‟t change its

value.

4.6.2 UART Auto-Frame

WIFI232 support UART auto-frame function. If user select open this function and setting autoframe trigger length and auto-frame trigger time parameters, then module will auto framing the data which received from UART port and transmitting to the network as pre-defined data structure.

 Auto-frame trigger length: The fixed data length that module used to transmitting to the

network.  Auto-frame trigger time: After the trigger time, if UART port received data can‟t reach auto-

frame trigger length, then module will transmitting available data to the network and bypass

the auto-frame trigger length condition.

Detailed UART auto-frame function can refer to AT+ instruction set “UARTF/UARTFT/UARTFL” introduction.

4.7 Network Setting

WIFI232 module has two TCP/UDP Socket: Socket A and Socket B. Serial data written to the module, will be sent to the Socket A and B simultaneously; TCP/UDP data that module receives through either Socket A or B,will be sent to the serial port. Dual Socket through different settings, you can achieve a variety of network interconnect. When the module shipped only open Socket A, Socket B default is not to connect, if the user needs to use, please set by AT commands.

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4.7.1 Socket A

Socket A has three work mode: TCP Server, TCP Client, UDP.The setting method, please refer to the AT+NETP command instruction. When Socket A configured as TCP Server, it supports Multi-TCP link connection, and maximum 32 TCP clients permitted to connect to Socket A. Multi-TCP link connection will work as following structure: Upstream: All dates from different TCP connection or client will be transmitted to the serial port as a sequence. Downstream: All data from serial port (user) will be duplicate and broadcast to every TCP connection or client. Detailed multi-TCP link data transmition structure as following figure:

Figure 24 Multi-TCP Link Data Transmition Structure

4.7.2 Socket B

Socket B has one work mode: TCP Client, please refer to the AT+TCPB/AT+TCPPTB/TCPADDB/ TCPTOB/TCPLKBcommand instruction. With variety work mode, socket B can provide users with flexible data transfer methods.For example, Socket B can connect to a remote server in order to achieve remote control.

4.8 New function

4.8.1 TCP password authentication

This feature is available only on the module as a TCP server, when the TCP client connection module, the module will authenticate each connected tcp. Each TCP client first data is the “password+0x0d+0x0a” (the password is Webpage authentication password). The default password is “admin”, so the first piece of data should be "0x61 0x64 0x6D 0x69 0x6E 0x0D 0x0A" (Hex). If the password is correct, the module returns "OK", on the other hand, return to the "NO" and disconnect.

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The TCP connection of this function can be Webpage in "TCP connection password authentication" is opened or disable. Please refer to the specific "5.1.6" section.

4.8.2 Upload ID

This function only applies to the module as a TCP client, in front of the data when module connected to the server with two bytes of ID (ID the range is 0 ~ 65535, the high byte before, and the low byte behind) plus two bytes ID radix-minus-one complement.Module is the default ID is 1111, for example, is sent to the server when the first four bytes "0x57 0x04 0xfb 0xa8". There are two ways to upload their own id: one is to upload their own id for connection to the server for the first time;The other is a plus id in front of each data. ID number related parameter is set in the "serial port and other Settings" section of the web, build joint function of ID for the first time, and each data with the function of ID are opened by default. ID can also use the at command to set the related parameters, specific refer to 5.2.2.2.36-

5.2.2.2.38 section.

4.8.3 WEB IO

This function only work for "GPIO mode". When the module is in the "GPIO mode", enter the Webpage in "WEB IO", you can click on the corresponding button to control module pin level. Without the need to download and install app, any platform, any equipment, as long as you can into the built-in Webpage of module through the browser built-you can control module pin of IO.

4.8.4 Keepalive

V4.02.10. USR13 and above version of the firmware added keepalive when the TCP connection mechanism, so when the module of network anomalies, timely diagnose abnormal to the network and disconnect, when the network has resumed after, and just in time to connect to the server.

4.8.5 Multiple STA parameters

This function based on V4.02.10 D.U SR18 and above version of the firmware, in the sta mode, if can network signal is too low, it will automatically switch to the other AP network (switching network automatically restart). This feature provides a signal threshold, when the current network signals is lower than the critical value, the module of automatic switching network and restart.If the signal value is set to 100, the module will not switch network.Even if the current network signal is not the current network will always search, not heavy to other networks. The function of the specific Settings page refer to section 5.1.4. Specific setup process, please refer to the AT command section(5.2.2.2.50-5.2.2.2.56).

4.8.6 Websocket

This module can realize the function of the websocket server, allowing serial real-time interaction with the web module, replace the previous HTTP GET, POST, corresponding faster.This module provides the corresponding websocket test page for user testing, specific page is as follows:(web

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Page:10.10.100.254/websocketen.html)

Figure 25 Websocket Page

Click on the "connect" page and then implements a connection, so a serial port with page can send or receive data from each other.This module websocket server support 8 client connection at the same time. This function for web applications, and for web users with higher response speed, if you want to customize the corresponding web page, can connect your company.

4.8.7 Fast access Wi-Fi(usr-link)

When one module works in AP mode, it opens a UDP port used to receive fast access Wi-Fi commands, the port number is 49000. The phone PDA can directly connect to Wi-Fi network of the module, send commands to search router list and set SSID and password. After the completion of set up, module will automatically restart, connected to the router, work in the STA mode at this time. Protocol format Searching command

Name

Num of Bytes

Description

head

fixed value:0xFF

length

Sum of data bytes from length bytes to check byte(not contain length bytes and check byte).

cmd

Command type, 0x01

check

Sum of bytes from head (not contained) byte to check byte (not contained).

Response for searching

Name

Num of Bytes

Description

head

fixed value:0xFF

length

Sum of data bytes from length bytes to check byte(not contain length bytes and check byte).

cmd

Command type, 0x81

AP num

The number of AP what module scans

SSID1

Unsized

The SSID of router 1

separator

Separator of SSID1, fixed value:0x00

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Signal strength1

Signal strength of router 1,0~100：0%~100%

separator

Separator of signal strength1, fixed value: 0x0D,0x0A

… … …

………

SSID n

Unsized

The SSID of router n

M+1

separator

Separator of SSID n, fixed value:0x00

M+2

Signal strength

Signal strength of router n,0~100：0%~100% M+3

separator

fixed value:0x0D,0x0A

M+4

check

Sum of bytes from head (not contained) byte to check byte (not contained).

Example: Data from phone PDA to module (HEX): FF 00 01 01 02 Data from module to phone PDA (HEX): FF 00 14 81 02 54 45 53 54 31 00 40 0D 0A 54 45 53 54 32 00 37 0D 0A 1F Explanation: The phone PDA send searching command to module, the response from module is: SSID of router1 is “TEST1”, signal strength of router1 is 64%; SSID of router2 is “TEST2”, signal strength of router2 is 55%. Note: The information of routers is ordered by signal strength. Setting command

Name

Num of Bytes

Description

head

fixed value:0xFF

length

Sum of data bytes from length bytes to check byte (not contain length bytes and check byte).

cmd

Command type, 0x02

reserve

fixed value:0x00

SSID

Unsized

SSID of router

separator

fixed value:0x0D,0x0A 7

password

Unsized

Password of router

check

Sum of bytes from head (not contained) byte to check byte (not contained).

Response for setting

Name

Num of Bytes

Description

head

fixed value:0xFF

length

Sum of data bytes from length bytes to check byte(not contain length bytes and check byte).

cmd

Command type, 0x82

Check for SSID

If the SSID set by PDA exist, check value is 0x01, otherwise is 0x00.

Check for password

If the form of password set by PDA is correct, check value is 0x01, otherwise is 0x00.

check

Sum of bytes from head (not contained) byte to check byte (not contained).

Example: Data from phone PDA to module (HEX): FF 00 0F 02 00 54 45 53 54 31 0D 0A 31 32 33 34 35 36 CE Data from module to phone PDA (HEX): FF 00 03 82 01 01 87 Explanation:

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The phone PDA send setting command to module, SSID is set to “TEST1”, password is set to “123456”. The response from module is that the “TEST1” Wi-Fi network exist, the form of password is correct.

4.8Palmodic Signal

Base on selected factory default setting, “nReady” signal can have two output statuses:  Status One: The module will output “0” after normal boot up. This signal used to judge if

module finish boot up and ready for application.  Status Two: The module will output “Palmodic Signal” after normal boot up.The palmodic

signal is 0.5Hz square wave with dutyfactor 1:1. User can query this signal to judge if

moduleis active “live” or need to re-boot. When module switches to command mode, it will

output “0”, which used to distinguish work mode and command mode.

4.9 Parameters Configuration

WIFI232 module supports two methods to configuration parameters: Web Accessing and AT+instruction set.

Web accessing means users can configure parameters through built-in webpage. When WIFI232 module connected to wireless network, parameters configuration is done on a PC connected to the same wireless network. AT+instruction set configuration means user configure parameters through serial interface command. Refer to “AT+instruction set” chapter for more detail.

4.10 Firmware Upgrade

WIFI232 module supports firmware upgrade online.

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5 Web Accessing and AT+instruction set

5.1 Configuration via Web Accessing

When first use WIFI232 modules, user may need some configuration. User can connect to WIFI232 module‟s wireless interface with following default setting information and configure the module through laptop.

Table 6 WIFI232 Web Access Default Setting

Parameters

Default Setting

SSID

WIFI232

IP Address

10.10.100.254

Subnet Mask

255.255.255.0

User Name

admin

Password

admin

5.1.1 Open Web Management Interface

Step 1: Connect laptop to SSID “WIFI232” of WIFI232 module via wireless LAN card; Step 2: After wireless connection OK. Open Wen browser and access “http://10.10.100.254”; Step 3: Then input user name and password in the page as following and click “OK” button.

Figure 26 Open Web Management page

The WIFI232 web management page support English and Chinese language. User can select

language environment at the top right corner and click “Apply” button.

The main menu include five pages: “Mode Selection”,” AP Interface Setting”,”STA Interface Setting”,”Application Setting”, “WEB IO”and “Device Management”

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5.1.2 Quick Configure

This page provides users with a method of rapid configuration module.Users according to the steps to configure the parameters and restart the module page, you can let the module is normal work, reduced the configuration steps and time.Of course the options on this page is less, if some detailed configuration, still need to the corresponding configuration page.

Figure 27 Quick Configure Page

This page has four configuration options and a restart, the corresponding instructions below:

 WI-FI Setting: set the working mode of wifi, AP mode or the STA.  Ethernet Ports Setting: open/close the Ethernet ports, and set up the corresponding work

mode.  UART Setting: set serial port parameters, including baud rate, parity bit, 485 functions and so

on.

 Network Setting: set network parameters, Only TCPA related parameters.  Device Management: when after completion of the above parameters are configured, click

reset module.

5.1.3 Mode Selection Page

This page use to setting the wireless networking mode (AP and STA mode).

"Data transmission mode" selection module working mode are "Transparent Mode", "Serial Command mode", "HTTPD Client mode", "GPIO mode".

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"TCP connection password authentication" can choose whether open TCP password authentication.

Figure 28 Mode Selection Page

5.1.4 AP Interface Setting Page

This page use to setting the parameters when WIFI232 module works as AP.

Figure 29 AP Interface Setting Page

5.1.5 STA Interface Setting Page

This page use to setting the parameters when WIFI232 module works as STA. Such as SSID of AP which module need to connected, and also select the networking type: DHCP or static IP address.

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Figure 30 STA Interface Setting Page

5.1.6 Application Setting Page

This page use to setting the parameters of serial port communication, such as UART setting,UART AutoFrame Setting,Ethernet function,Device ID setting and high layer network protocol setting which used support serial communication.

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Figure 31 Application Setting Page

Notes: Generally, Network protocols support three modes: TCP Server, TCP Client, UDP Client,UDP Server.

Besides module working as TCP Server (IP address not required in this mode). User must set the IP address of the device which need communicate with WIFI232 module. Also the Port ID between two sides of the communication devices must keep the same.

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5.1.7 Ethernet Setting

This page is used to set Ethernet front-end ports of the module, It can be open or closed.And also can be set to the WAN port to use, this module can be used as a secondary router, making it easy for users to network.Specific Settings page is as follows:

Figure 32 Ethernet Setting Page

5.1.8 HTTPD Client Mode

This page sets the HTTP header in the HTTPD Client mode.Include: the address of the server, the server port, request type, protocol header path, Connection, user-agent. HTTPD Client mode support POST, PUT, GET three HTTP request types.Is a POST or PUT request way, serial data can be added to the back of the HTTP header;When the request is a GET, data can be added to the back of the path in the HTTP header.The specific way of sending data can consult section 4.2.4.

Figure 33 HTTPD Client Mode Page

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5.1.9 WEB IO

Figure 34 WEB IO Page

5.1.10 Advanced Page

Under the advanced Settings page, the user can set the port mapping and function of DDNS, without having to go on a router Settings, reduce the complexity of setting, the port mapping and DDNS, can be in the public environment, by entering the peanut shell domain name and port, can quickly and easily find the module.

Figure 35 Advanced Setting Page

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5.1.11 Device Management Page

This page use to manage WIFI232 module general setting, such as administrator setting, restart module button, restore factory default setting button, and update firmware through webpage.

Figure 36 Device Management Page

Notes: Restart module button: When you setting the parameters of different web pages,

you will click “Apply” button to confirm the setting, but the setting take effect only after user click the “Restart” button here, the module will re-boot up and refresh the memory

information with new changes.

5.2 AT+instruction Introduction

5.2.1 Configuration Mode

When WIFI232 power up, it will default works as transparent transmission mode, then user can switch to configuration mode by serial port command. WIFI232 UART default parameters setting as below figure

Figure 37 WIFI232 Default UART Port Parameters

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In configuration mode, user can setting the module through AT+ instruction set, which cover all web page setting function.

5.2.1.1 Switch to Configuration Mode

Two steps to finish switching from transparent transmission mode to configuration mode.

 UART input “+++”, after module receive “+++”, and feedback “a” as confirmation.  UART input “a”, after module receive “a” and feedback “+ok” to go into AT+

instruction set configuration mode.

Figure 38 Switch to Configuration Mode

Notes:

1. When user input “+++” (No “Enter” key required), the UART port will display feedback

information “a”, and not display input information”+++” as above UART display.

2. Any other input or wro ng step to UART port will cause the module still works as original mode (transparent transmission).

5.2.2 AT+ Instruction Set Overview

User can input AT+ Instruction through hyper terminal or other serial debug terminal, also can

program the AT+ Instruction to script. User can also input “AT+H” to list all AT+ Instruction and

description to start.

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Figure 39 ”AT+H” Instruction for Help

We supply software WIFI232-Setup to send command easily, software setup:

Figure 40 Serial port parameter

Click “Open Com”, send “+++a”, it will reply +ok in left side, then type in and send the command you need to send, then click “AT+RELD” to restore, then parameters saved.

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Figure 41 software of WIFI232-Setup

Above is by COM, also you can send by WIFI: First, connect with PC, open the software, see Net part

Figure 42 Search module

Click search, then will show module, click module then you can send command.

5.2.2.1 Instruction Syntax Format

AT+Instruction protocol is based on the instruction of ASCII command style, the description of syntax format as follow.

 Format Description

 < >: Means the parts must be included

 [ ]: Means the optional part

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 Command Message

AT+<CMD>[op][para-1,para-2,para-3,para-4…]<CR>

 AT+: Prefix of command message;

 CMD: Command string;

 [op]: Symbol of command operator,

 “=” : The command requires parameters input;  “NULL”: Query the current command parameters setting;

 [para-n]: Parameters input for setting if required;

<CR>: ”Enter” Key, it‟s 0x0a or 0x0d in ASCII;

Notes: When input AT+Instruction, “AT+<CMD>” character will display capital letter automatic

and other parts will not change as you input.

 Response Message

+<RSP>[op] [para-1,para-2,para-3,para-4…]<CR><LF><CR><LF>

 +: Prefix of response message;  RSP: Response string;

 “ok” : Success

 “ERR”: Failure  [op] : =  [para-n]: Parameters if query command or Error code when error happened;  <CR>: ASCII 0x0d;  <LF>: ASCIII 0x0a;

 Error Code

Table 7 Error Code Description WIFI232 Web Access Default Setting

Error Code

Description

-1

Invalid Command Format

-2

Invalid Command

-3

Invalid Operation Symbol

-4

Invalid Parameter

-5

Operation Not Permitted

5.2.2.2 AT+ Instruction Set

Table 8 AT+ Instruction Set List

Instruction

Description

<null>

NULL

Open/Close show back function

ENTM

Set module into transparent transmission mode

NETP

Set/Query network protocol parameters

UART

Set/Query serial port parameters

UARTF

Open/Close UART auto-frame function

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UARTFT

Set/Query UART auto-frame trigger time

UARTFL

Set/Query UART auto-frame trigger length

TMODE

Set/Query data transmission mode (transparent transmission or agreement transmission)

WMODE

Set/Query WIFI work mode (AP or STA)

WSKEY

Set/Query WIFI security parameters as STA

WSSSID

Set/Query WIFI target AP SSID parameters as STA

WSLK

Query WiFi link status as STA

WEBU

Set/Query WEB page login parameters (User Name and Password)

WAP

Set/Query WIFI parameters as AP

WAKEY

Set/Query WIFI security parameters as AP

HIDESSID

Set/Query hide AP‟s SSID

MSLP

Set modules into power save mode.(Turn OFF WiFi)

WSCAN

Seek AP when module works as STA mode

TCPLK

Query if TCP link already build-up

TCPDIS

Open/Cose TCP (Only TCP Client available)

WANN

Set/Query WAN setting, only effective as STA mode

LANN

Set/Query LAN setting, only effective as AP mode

DHCPDEN

Enable/Disable LAN DHCP server function

DHCPGW

Set/Query DHCP gateway address

TCPTO

Set/Query TCP timeout

MAXSK

Set/Query maxima TCP connection

TCPB

Open/Close TCPB function

TCPPTB

Set/Query TCPB port number

TCPADDB

Set/Query TCPB server address

TCPTOB

Set/Query TCPB time out time

TCPLKB

Query TCPB link status

EPHY

Open/Close ETH interface

STTC

Enable/Disable STA port scan function

DOMAIN

Set/Query domain of module webpage

RELD

Restore to factory default setting

FUDLX

Open / close the 485 function

MMID

Device ID

IDFIR

Send an ID when module connection is established

IDEVE

Every time to send data to send ID

MID

Query module ID information

VER

Query module software version information

Help

WSSSIDA

Set/query the first AP„s ssid of 3 sta parameters

settings

WSSSIDB

Set/query the second AP„s ssid of 3 sta parameters settings

WSSSIDC

Set/query the third AP„s ssid of 3 sta parameters settings

WSKEYA

Set/query the first AP„s password of 3 sta parameters

settings

WSKEYB

Set/query the second AP„s password of 3 sta parameters settings

WSKEYC

Set/query the third AP„s password of 3 sta parameters settings

WSLQ

Set/query the critiacl value of network switching

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Notes: WIFI232 module can works as AP or STA, user have to use different AT+ Instruction to set WiFi parameters when module works as AP or STA mode.

5.2.2.2.1 AT+E

 Function: Open/Close show back function;  Format:

AT+E<CR>

+ok<CR>< LF ><CR>< LF >

When WIFI232 module firstly switch from transparent transmission to configuration mode, show back status is open, input “AT+E” to close show back function, input“AT+E” again to open show back function.

5.2.2.2.2 AT+ENTM

 Function: Set module into transparent transmission mode;  Format:

AT+ENTM<CR> +ok<CR>< LF ><CR>< LF >

When operate this command, module switch from configuration mode to transparent transmission mode.

5.2.2.2.3 AT+NETP

 Function: Set/Query network protocol parameters;  Format:

 Query Operation

AT+NETP<CR> +ok=<protocol,CS,port,IP><CR>< LF ><CR>< LF >

 Set Operation

AT+NETP=<protocol,CS,port,IP><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 protocol:

 TCP  UDP

 CS: Network mode:

 SERVER

 CLIENT  Port: protocol port ID: Decimal digit and less than 65535  IP: Server‟s IP address when module set as client

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.4 AT+UART

 Function: Set/Query serial port parameters;  Format:

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 Query Operation

AT+UART<CR>

+ok=<baudrate,data_bits,stop_bit,parity,flowctrl><CR>< LF ><CR>< LF >

 Set Operation

AT+UART=<baudrate,data_bits,stop_bit,parity,flowctrl><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 baudrate:

 300,600,1200,1800,2400,4800,9600,19200,38400,57600,115200,230400,345

600,460800

 data_bits:

 5,6,7,8  stop_bits:

 1,2  parity:

 NONE,EVEN,ODD,MARK,SPACE  flowctrl：hardware flow control (CTSRTS)

 NFC: No flow control

 FC: flow control

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.5 AT+UARTF

 Function: Open/Close UART auto-frame function;  Format:

 Query Operation

AT+ UARTF<CR> +ok=<para><CR>< LF ><CR>< LF >

 Set Operation

AT+ UARTF=<para ><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 para:

 disable - Close auto-frame function;

 enable - Open auto-frame function;

5.2.2.2.6 AT+UARTFT

 Function: Set/Query UART auto-frame trigger time;  Format:

 Query Operation

AT+ UARTFT<CR> +ok=<time><CR>< LF ><CR>< LF >

 Set Operation

AT+ UARTFT=<time ><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

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 time: Range 100 ~10000; Unit: ms. Auto-frame trigger time

5.2.2.2.7 AT+UARTFL

 Function: Set/Query UART auto-frame trigger length;  Format:

 Query Operation

AT+ UARTFL<CR> +ok=<len><CR>< LF ><CR>< LF >

 Set Operation

AT+ UARTFL=<len ><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 len: Range 64 ~4096; Unit: byte. Auto-frame trigger length;

5.2.2.2.8 AT+TMODE

 Function: Set/Query data transmission mode;  Format:

 Query Operation

AT+TMODE<CR>

+ok=<tmode><CR>< LF ><CR>< LF >

 Set Operation

AT+ TMODE=<tmode><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 tmode: Data transmission mode

 Through: Transparent transmission

 Agreement: Agreement transmission

 Httpdclient: Httpd Client Mode

 GPIO: GPIO Mode

After WIFI232 module boots up again, the setting will be effective.

Note: No CMD.After power on, the module will not work in the AT command mode by default.

5.2.2.2.9 AT+WMODE

 Function: Set/Query WIFI work mode;  Format:

 Query Operation

AT+WMODE<CR> +ok=<mode><CR>< LF ><CR>< LF >

 Set Operation

AT+ WMODE=<mode><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 mode:WIFI work mode

 AP

 STA

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.10 AT+WSKEY

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 Function: Set/Query WIFI security parameters as STA;  Format:

 Query Operation

AT+WSKEY<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSKEY=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 auth: Authentication mode

 OPEN

 SHARED

 WPAPSK  encry:Encryption algorithm

 NONE: When “auth=OPEN”, effective

 WEP: When “auth=OPEN” or “SHARED”, effective

 TKIP: When ”auth= WPAPSK”, effective

 AES: When “auth= WPAPSK”, effective  key: password, ASCII code, shall less than 64 bit and greater than 8bit

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.11 AT+WSSSID

 Function: Set/Query WIFI target AP SSID parameters as STA.  Format:

 Query Operation

AT+WSSSID<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSSSID=<ap’s ssid ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 ap‟s ssid: AP‟s SSID

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.12 AT+ WSLK

 Function: Query WiFi link status as STA  Format:

 Query Operation

AT+ WSLK<CR> +ok=<ret><CR>< LF ><CR>< LF >

 Parameters:

 ret

 ”Disconnected”, if no WiFi connection;

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 ”AP‟ SSID（AP‟s MAC” ）, if WiFi connection available;

 ”RF Off”, if WiFi OFF;

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.13 AT+WEBU

 Function: Set/Query WEB page login parameters;  Format:

 Query Operation

AT+WEBU<CR> +ok=<usr,password><CR>< LF ><CR>< LF >

 Set Operation

AT+ WEBU=< usr,password ><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 usr: User name for WEB page access;  password：Password for WEB page access;

5.2.2.2.14 AT+WAP

 Function: Set/Query WIFI parameters as AP;  Format:

 Query Operation

AT+WAP<CR> +ok=<wifi_mode,ssid,channel><CR>< LF ><CR>< LF >

 Set Operation

AT+ WAP=<wifi_mode,ssid,channel><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 wifi_mode: WiFi protocols

 11BG

 11B

 11G

 11BGN

 11N  ssid: SSID when module works as AP;  channel: WIFI channel selection

 AUTO

 CH1~CH11

This Instruction only effective for WIFI232 works as AP. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as STA.

5.2.2.2.15 AT+WAKEY

 Function: Set/Query WIFI security parameters as AP;  Format:

 Query Operation

AT+WAKEY<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >

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 Set Operation

AT+ WAKEY=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 auth: Authentication mode

 OPEN

 SHARED

 WPAPSK  encry:Encryption algorithm

 NONE: When “auth=OPEN”, effective;

 WEP: When “auth=OPEN”, effective or “SHARED”, effective;

 TKIP: When “auth=WPAPSK”, effective;

 AES:When “auth=WPAPSK”, effective;

 TKIPAES:When “auth=WPAPSK”, effective;  key: password, ASCII code, shall less than 64 bit and greater than 8bit;

This Instruction only effective for WIFI232 works as AP. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as STA.

5.2.2.2.16 AT+HIDESSID

 Function: Set/Query hide AP‟s SSID;  Format:

 Query Operation

AT+HIDSSID<CR> +ok=<sta.><CR><LF><CR><LF>

 Set Operation

AT+HIDSSID=<sta><CR> +ok<CR><LF><CR><LF>

 Parameters:

 When Query,sta reply if module‟s SSID is hide;

 On-not hide SSID

 Off- hide SSID  When Set,

 Off-hide SSID

 On- not hide SSID

5.2.2.2.17 AT+MSLP

 Function: Set modules into power save mode.(Turn OFF WiFi,Regardless of the AP

mode or the sta mode);

 Format:

 Query Operation

AT+ MSLP <CR> +ok=<sta.><CR>< LF ><CR>< LF >

 Set Operation

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AT+ MSLP=<on/off><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 When Query,sta reply if the module in sleep mode;

 On - Module not in sleep mode (WiFi ON);

 Off - Module in sleep mode(WiFi OFF);  When Set,

 Off - Set module to sleep mode (WiFi OFF);

 On - Set module to normal mode (WiFi ON);

When module go into sleep mode, user can input “AT+MSLP=on” to re-start the module and module go into transparent transmission mode.

5.2.2.2.18 AT+WSCAN

 Function: Seek AP when module works as STA mode;  Format:

AT+ WSCAN<CR> +ok=<ap_site><CR>< LF ><CR>< LF >

 Parameters:

 ap_site: AP searched;

The first line of the return value is "RSSI, SSID, BSSID, Channel, Encryption,Authentication", they are the signal strength, network name, MAC address,channel, mode of authentication, encryption algorithm.

5.2.2.2.19 AT+ TCPLK

 Function: Query if TCP link already build-up;  Format:

AT+ TCPLK<CR> +ok=<sta><CR>< LF ><CR>< LF >

 Parameters:

 sta.: if module already setup TCP link;

 on: TCP link setup;

 off: TCP link not setup;

5.2.2.2.20 AT + TCPDIS

 Function: Open/Cose TCP (Only TCP Client available);  Format:

 Query Operation

AT+TCPDIS<CR> +ok=<sta><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPDIS=<on/off><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 sta.: set/query TCP link status;

 on: TCP link available; When setting “on”, module will connect to TCP server

right away.

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 off: TCP link not available; when setting “off”, module will disconnect with TCP

server and not connect again.

5.2.2.2.21 AT+ WANN

 Function: Set/Query WAN setting, only effective as STA mode;  Format:

 Query Operation

AT+WANN<CR> +ok=<mode,address,mask,gateway><CR>< LF ><CR>< LF >

 Set Operation

AT+ WANN=< mode,address,mask,gateway ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 mode: IP setting for WAN port

 static: Static IP

 DHCP: Dynamic IP  address: WAN port IP address;  mask: WAN port subnet mask;  gateway: WAN port gateway address;

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.22 AT+ LANN

 Function: Set/Query LAN setting, only effective as AP mode;  Format:

 Query Operation

AT+LANN<CR> +ok=<address,mask ><CR>< LF ><CR>< LF >

 Set Operation

AT+ LANN=<address,mask ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 address: LAN port IP address;  mask: LAN port subnet mask;

This Instruction only effective for WIFI232 works as AP. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as STA.

Note: AT+WANN check the wan port address of module, AT+LANN check the LAN port address of module, and the two IP cannot be set on the same network segment,If do,Module will be abnormal.

5.2.2.2.23 AT+DHCPDEN

 Function: Enable/Disable LAN DHCP server function;  Format:

 Query Operation

AT+DHCPDEN<CR> +ok=<sta><CR><LF><CR><LF>

 Set Operation

AT+DHCPDEN=<sta><CR>

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+ok<CR><LF><CR><LF>

 Parameters:

 sta. If Enable/Disable LAN DHCP server function;

 on: Enable LAN DHCP function

 off: Disable LAN DHCP function

5.2.2.2.24 AT+ DHCPGW

 Function: Set/Query DHCP gateway address;  Format:

 Query Operation

AT+ DHCPGW<CR> +ok=<address><CR>< LF ><CR>< LF >

 Set Operation

AT+ DHCPGW=<address ><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 address: DHCP gate address;

5.2.2.2.25 AT+ TCPTO

 Function: Set/Query TCP timeout;  Format:

 Query Operation

AT+ TCPTO<CR> +ok=<time><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPTO=<time ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 time: TCP timeout time.

 <= 600, (600s);

 >=0, (0 means no timeout);

 Default, 300s;

TCP timeout: module began to count when TCP channel did not receive any data, receive data purge count.If the timing time exceed TCPTO, disconnect the TCP channel.If module work in TCP Client , it will take the initiative to rewiring the TCP Server, If module work in the TCP Server, the TCP Client need active reconnection.

5.2.2.2.26 AT+ MAXSK

 Function: Set/Query maxima TCP connection;  Format:

 Query Operation

AT+ MAXSK<CR> +ok=<num><CR>< LF ><CR>< LF >

 Set Operation

AT+ MAXSK =<num ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

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 num: 1~32, default 32. maxima TCP connection;

When configure as TCP/Server, WIFI232 support maxima 32 TCP connections. If not require so much connection, user can resetting this parameters.

5.2.2.2.27 AT+TCPB

 Function: Open/Close TCPB function;  Format:

 Query Operation

AT+TCPB<CR> +ok=<sta><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPB=<on/off><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 sta: TCPB enable status

 on, TCPB enable

 off, TCPB disable

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.28 AT+TCPPTB

 Function: Set/Query TCPB port number;  Format:

 Query Operation

AT+TCPPTB<CR> +ok=<port><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPB=<port><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 port: decimal ,<65535

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.29 AT+TCPADDB

 Function: Set/Query TCPB server address;  Format:

 Query Operation

AT+TCPADDB<CR> +ok=<add><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPADDB=<add><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 add: TCPB server address, can be IP address or url.

After WIFI232 module boots up again, the setting will be effective

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5.2.2.2.30 AT+TCPTOB

 Function: Set/Query TCPB time out time;  Format:

 Query Operation

AT+TCPTOB<CR> +ok=<time><CR>< LF ><CR>< LF >

 Set Operation

AT+ TCPTOB=<time><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 time: TCPB time out time, <=600 (600s), >=0 (No time out), default 300

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.31 AT+TCPLKB

 Function: Query TCPB link status;  Format:

AT+TCPCKB<CR> +ok=<sta><CR>< LF ><CR>< LF >

 Parameters:

 sta: TCPB link status

 on, TCPB link OK

 off, TCPB link not available

5.2.2.2.32 AT+EPHY

 Function: Open/Close ETH interface;  Format:

 Set Operation

AT+ EPHY=<on/off><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 On/off

 Off: Close Ethernet port function;

 On: Open Ethernet port function;

If you want to keep the Ethernet port open,please use the AT+FEPHY=on.

Close module‟s Ethernet port function can reduce the power consumption. The default setting for

WIFI232 is close Ethernet port function. Use AT + FVEW = disable/enable, so you can set the modules work in LAN port (disable) or wan port (enable), the directive restore factory Settings to take effect.

5.2.2.2.33 AT+STTC

 Function: Enable/Disable STA port scan function  Format:

 Query Operation

AT+STTC<CR>

+ok=<sta><CR>< LF ><CR>< LF >

 Set Operation

AT+STTC=<on/off><CR>

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+ok<CR><LF><CR><LF>

 Parameters:

 Sta: when query, this value feedback

 On: Enable STA port scan function

 Off: Disable STA port scan function

5.2.2.2.34 AT+DOMAIN

 Function: Set/Query domain of module webpage;  Format

 Query Operation

AT+DOMAIN<CR> +ok=<domian><CR><LF><CR><LF>

 Set Operation

AT+DOMAIN=<domain><CR> +ok<CR><LF><CR><LF>

 Parameters:

 domain: domain to access to module webpage

5.2.2.2.35 AT+FUDLX

 Function: Enable/Disable 485 function;  Format:

 Query Operation

AT+FUDLX<CR> +ok=<on/off><CR><LF><CR><LF>

 Set Operation

AT+FUDLX=<on/off><CR> +ok<CR><LF><CR><LF>

 Parameters:

 On/off: Enable or Disable 485 function

 On, enable 485 function;

 Off, disable 485 function;

Notes: AT+FUDLX is F-Setting, means restore to factory setting will not affect this command.

5.2.2.2.36 AT+MMID

 Function: Set/Query Device ID;  Format:

 Query Operation

AT+MMID<CR> +ok=<time><CR>< LF ><CR>< LF >

 Set Operation

AT+ MMID=<time><CR>

+ok<CR>< LF ><CR>< LF >

 Parameters:

 ID: device id(0~65535)

After WIFI232 module boots up again, the setting will be effective.

5.2.2.2.37 AT+IDFIR

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 Function: Enable/Disable “Send an ID when module connection is established” function;  Format:

 Query Operation

AT+IDFIR<CR> +ok=<on/off><CR><LF><CR><LF>

 Set Operation

AT+IDFIR=<on/off><CR> +ok<CR><LF><CR><LF>

 Parameters:

 On/off: Enable or Disable “Send an ID when module connection is established”

function

 On, enable “Send an ID when module connection is established” function;

 Off, disable “Send an ID when module connection is established” function;

5.2.2.2.38 AT+IDEVE

 Function: Enable/Disable Every time to send data to send ID function;  Format:

 Query Operation

AT+IDEVE<CR> +ok=<on/off><CR><LF><CR><LF>

 Set Operation

AT+IDEVE=<on/off><CR> +ok<CR><LF><CR><LF>

 Parameters:

 On/off: Enable or Disable Every time to send data to send ID function

 On, enable Every time to send data to send ID function;

 Off, disable Every time to send data to send ID function;

Note: The ID function requires that the server carries out corresponding processing.In front of the data when module connected to the server with two bytes of ID (ID the range is 0 ~ 65535, the high byte before, and the low byte behind) plus two bytes ID radix-minus-one complement.Module is the default ID is 1111, for example, is sent to the server when the first four bytes "0x57 0x04 0xfb 0xa8".

5.2.2.2.39 AT+AABR

 Function: Enable/Disable Self-adaption Baudrate function;  Format:

 Query Operation

AT+AABR<CR> +ok=<on/off><CR><LF><CR><LF>

 Set Operation

AT+AABR=<on/off><CR> +ok<CR><LF><CR><LF>

 Parameters:

 On/off: Enable or Disable Self-adaption Baudratefunction

 On, enable Self-adaption Baudrate function;

 Off, disable Self-adaption Baudrate function;

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5.2.2.2.40 AT+RELD

 Function: Restore to factory default setting;  Format:

AT+ RELD<CR> +ok=rebooting…<CR>< LF ><CR>< LF >

This command restores the module to factory default setting, and then re-starts the module.

5.2.2.2.41 AT+Z

 Function: Re-start module;  Format:

AT+ Z<CR>

5.2.2.2.42 AT+MID

 Function: Query module ID information;  Format:

 Query Operation

AT+MID<CR> +ok=<module_id><CR>< LF ><CR>< LF >

 Parameters:

 module_id: MID information;

 A11-yymmddnnnn “yymmdd” date; “nnnn” serial number;

5.2.2.2.43 AT+VER

 Function: Query module software version information;  Format:

 Query Operation

AT+VER<CR> +ok=<ver><CR>< LF ><CR>< LF >

 Parameters:

 ver: Module software version information;

5.2.2.2.44 AT+H

 Function: Help;  Format:

 Query Operation

AT+H<CR> +ok=<command help><CR>< LF ><CR>< LF >

 Parameters:

 command help: command introduction;

5.2.2.2.45 AT+ HTTPURL

 Function:Set /Query HTTP server IP address and Port Number.  Format:

 Query Operation:

AT+HTTPURL<CR> +ok=<IP,Port><CR>< LF ><CR>< LF >

 Set Operation:

AT+HTTPURL=<IP,Port><CR> +ok<CR>< LF ><CR>< LF >

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 Parameters:

 IP:HTTP server IP address.  Port:HTTP server Port number。

5.2.2.2.46 AT+ HTTPTP

 Function:Set /Query HTTP request type.  Format:

 Query Operation:

AT+HTTPTP<CR> +ok=<Type><CR>< LF ><CR>< LF >

 Set Operation:

AT+HTTPTP=<Type><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 Type：GET(default) or POST.

5.2.2.2.47 AT+ HTTPPH

 Function:Set/Query HTTP protocol header path.  Format:

 Query Operation:

AT+HTTPPH<CR> +ok=<Path><CR>< LF ><CR>< LF >

 Set Operation:

AT+HTTPPH=<Path><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 Path: Max length is 50 bytes.

5.2.2.2.48 AT+ HTTPCN

 Function:Set/Query Connection of HTTP protocol header.  Format:

 Query Operation:

AT+HTTPCN<CR> +ok=<Connection><CR>< LF ><CR>< LF >

 Set Operation:

AT+HTTPCN=<Connection><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 Connection: Max length is 20 bytes.

5.2.2.2.49 AT+ HTTPUA

 Function:Set/Query User-Agent of HTTP protocol header.  Format:

 Query Operation:

AT+HTTPUA<CR> +ok=<Parameter><CR>< LF ><CR>< LF >

 Set Operation:

AT+HTTPUA=<Parameter><CR>

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+ok<CR>< LF ><CR>< LF >

 Parameters:

 Parameter: Max length is 20 bytes.

5.2.2.2.50 AT+WSSSIDA

 Function: Set/query the first AP„s ssid of 3 sta parameters settings .  Format:

 Query Operation

AT+WSSSIDA<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSSSIDA=<ap’s ssid ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 ap‟s ssid: AP‟s SSID

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.51 AT+WSSSIDB

 Function: Set/query the second AP„s ssid of 3 sta parameters settings .  Format:

 Query Operation

AT+WSSSIDB<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSSSIDB=<ap’s ssid ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 ap‟s ssid: AP‟s SSID

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.52 AT+WSSSIDC

 Function: Set/query the third AP„s ssid of 3 sta parameters settings .  Format:

 Query Operation

AT+WSSSIDC<CR> +ok=<ap’s ssid><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSSSIDC=<ap’s ssid ><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 ap‟s ssid: AP‟s SSID

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.53 AT+WSKEYA

 Function: Set/query the first AP„s password of 3 sta parameters settings .

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 Format:

 Query Operation

AT+WSKEYA<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSKEYA=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 auth: Authentication mode

 OPEN

 SHARED

 WPAPSK  encry:Encryption algorithm

 NONE: When “auth=OPEN”, effective

 WEP: When “auth=OPEN” or “SHARED”, effective

 TKIP: When ”auth= WPAPSK”, effective

 AES: When “auth= WPAPSK”, effective  key: password, ASCII code, shall less than 64 bit and greater than 8bit

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.54 AT+WSKEYB

 Function: Set/query the second AP„s password of 3 sta parameters settings .  Format:

 Query Operation

AT+WSKEYB<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSKEYB=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 auth: Authentication mode

 OPEN

 SHARED

 WPAPSK  encry:Encryption algorithm

 NONE: When “auth=OPEN”, effective

 WEP: When “auth=OPEN” or “SHARED”, effective

 TKIP: When ”auth= WPAPSK”, effective

 AES: When “auth= WPAPSK”, effective  key: password, ASCII code, shall less than 64 bit and greater than 8bit

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.55 AT+WSKEYC

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 Function: Set/query the third AP„s password of 3 sta parameters settings .  Format:

 Query Operation

AT+WSKEYC<CR> +ok=<auth,encry,key><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSKEYC=< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 auth: Authentication mode

 OPEN

 SHARED

 WPAPSK  encry:Encryption algorithm

 NONE: When “auth=OPEN”, effective

 WEP: When “auth=OPEN” or “SHARED”, effective

 TKIP: When ”auth= WPAPSK”, effective

 AES: When “auth= WPAPSK”, effective  key: password, ASCII code, shall less than 64 bit and greater than 8bit

This Instruction only effective for WIFI232 works as STA. After WIFI232 module boots up again, the setting will be effective. But user can set this command when module configured as AP.

5.2.2.2.56 AT+ WSLQ

 Function: Set/query the critiacl value of network switching.  Format:

 Query Operation

AT+ WSLQ<CR> +ok=<ret><CR>< LF ><CR>< LF >

 Set Operation

AT+ WSLQ< auth,encry,key><CR> +ok<CR>< LF ><CR>< LF >

 Parameters:

 ret:The percentage of signal intensity, such as signalstrength was 50%, setting

should be AT+WSLQ=50<CR>;

Note: if set to 100, the module will not automatically switch WIFI network.If the users only one STA parameter, please be sure to set this parameter to 100.

6 WIFI232 Usage Introduction

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6.1 Module Debug

6.1.1 Software Debug Tools

In order to facilitate the use of my company, development of the serial and network debugging twoin-one test software, TCP232-Test

6.1.2 Network Connection

In order to test the serial port to the WIFI network address conversion, we will module serial connected with the computer, network and computer links to WIFI. Due to the need to have both a WIFI and serial special requirements, only a minority of the notebook computer can achieve, the user can use the desktop with a USB card, or use the notebook computer with a USB to serial line way, the author uses the desktop and WIFI card form test, desktop with serial.

Figure 43 Connection diagram

On the serial connection, module pin leads to 3.3V TTL level, not directly connected with the computer, need to bring the bottom or users are TTL to RS232 connecting line connected to the computer, in order to facilitate the user to test the use of, we provide a variety of floor for the user to choose, here in the case of WIFI232.

Hardware connectivity, for module power supply, the red power indicator light, wait about 6 seconds ( internal system boot ), Ready lights, said system startup complete, can operate, entering the next step.

6.1.3 Debug

As shown above, opened in PC program, set the COM export and open the serial port connection

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Figure 44 “CommTools” Serial Debug Tools

Open test software TCP232-Test.exe, selection of hardware attached to the computer's serial number, this is COM10, choose 57600 baud rate, such as the WIFI module serial default baud rate, open the serial port. Network settings in TCP client mode, the server IP address input 10.10.100.254, this is WIFI module default IP address, server port number 8899, this module default monitor TCP port number, click the link to establish TCP connection,Then click the create connection.

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Figure 45 “TCP UDPDbg” Tools Create Connection

Because of the WIFI232 module default support for transparent transmission mode, so now you can debug tools two-way data, all data will be wholly intact transmission to the other side of display. The testing process can be seen in module TXD and RXD indicator lights in the data through the flashing.

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Figure 46 The test results show that the network and serial port

Note: because of the RTS/CTS pin processing difference, currently available on the part of the

serial debugging software for the module of the system is not available, please be sure to want to use TCP232-Test we provide testing, or just RXD TXD GND connected the three line to the computer, please notice.

6.2 Use Cases

6.2.1 Wireless Control Application

Figure 47 Wireless Control Application

For this wireless control application, WIFI232 works as AP mode. Module‟s serial port connects to user device. So, control agent (Smart phone for this example) can manage and control the user device through the wireless connection with WIFI232 module.

6.2.2 Remote Management Application

Figure 48 Remote Management Application

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For this remote management application, WIFI232 works as STA mode and connects to Internet through wireless AP. Module configured as TCP Client and communicates with remote TCP server at

Internet. Module‟s serial port connects to user device.

So, user device‟s data or sampling information can send to remote TCP server for storage or

processing. Also remote TCP server can send command to control and manage the user device through the wireless network.

6.2.3 Transparent Serial Port Application

For this transparent serial port application, two WIFI232 modules connect as below figures to build up a transparent serial port connection.

Figure 49 Transparent Serial Port Application

For left side WIFI232 module, configured as AP mode and use default SSID and IP address, network protocol configured as TCP/Server mode, and protocol port ID: 8899.

For right side WIFI232 module, configured as STA mode and setting the same SSID （”WIFI232” for this example）with left side WIFI232 module, enable DHCP network and network protocol configured as TCP/Client mode, protocol port ID: 8899. Target IP address part setting the same IP address with left side WIFI232 module (“10.10.100.254” for this example).

When right side WIFI232 boot up, it will find wireless AP (SSID：WIFI232 for this example) and open TCP/Client network protocol to connect with left side module‟s TCP/Server. All these operation will be automatic and after finished, the two user devices connected to WIFI232 module through serial port can communicate each other and think the connection between them is fully transparent.

Note: LAN IP address and WAN port should in different segment, as picture shown, we change to 10.10.99.254 (the address get from left module WAN port DHCP is 10.10.100.xxx)

6.2.4 Wireless Data Acquisition Card Application

For this wireless data acquisition card application, one PC works as data server and every data acquisition card connects with a WIFI232 module to support wireless connection function.

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Figure 50 Wireless Data Acquisition Card Application

As above figure, one WIFI232 configured as AP mode and all others configured as STA mode. All WIFI232 which configured as STA and data server PC wireless connected to WIFI232 which configured as AP to make up a wires network.

Data server PC open TCP/Server protocol and all WIFI232 modules open TCP/Client protocol. All data acquisition cards‟ data and sampling information can be transmitted to data server PC for operation.

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Appendix A: Questions and Answers

Q1: How to configure transparent serial port application (TCP protocol) with two WIFI modules?

 Network structure as below figure:

 Module 1# Setting:

 Works as AP mode; --See “Mode Selection Page”  LAN IP address: 10.10.100.254; --See “AP Interface Setting Page”  Network Protocal:TCP/Server, Port ID: 8899; -- See “Application Setting Page”

(Module default setting);

 Module 2# Setting:

 Works as STA mode; --See “Mode Selection Page”  WAN connection type: DHCP or Static IP (For this example:10.10.100.100)

--See “STA Interface Setting Page”  Network Protocal:TCP/Client, Port ID: 8899; Application IP address: Module 1#‟s LAN

IP address (10.10.100.254); -- See “Application Setting Page”

 Notes: When module 2# works as STA mode, module‟s WiFi interface works as WAN

port. Module‟s WAN IP address and LAN IP address shall be setting different segment.

So, module 2#‟s LAN IP address must change to other segment; (For this sample, we

change to 10.10.99.254); --See “AP Interface Setting Page”

Figure 51 Configure Transparent Serial Port Connection (TCP)

Q2: Where to Set WIFI Module LAN IP and WAN IP through Web Page？

 WIFI232 Wireless LAN IP address setting see “AP Interface Setting Page” as below Figure,

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Figure 52 Module LAN IP Setting

 WIFI232 Wireless WAN IP address setting see “STA Interface Setting Page” as below Figure,

User can set WAN connection type to DHCP and STATIC IP.

Figure 53 Module WAN IP Setting

Q3: How to configure transparent serial port application (UDP protocol) with two WIFI modules?

 Network structure as below figure:

 Module 1# Setting:

 Works as AP mode; --See “Mode Selection Page”  LAN IP address: 10.10.100.254; --See “AP Interface Setting Page”  Network Protocal:UDP, Port ID: 8899; Application IP address:10.10.100.100;

-- See “Application Setting Page”

 Module 2# Setting:

 Works as STA mode; --See “Mode Selection Page”  WAN connection type: Static IP (10.10.100.100)

--See “STA Interface Setting Page”  Network Protocal:UDP, Port ID: 8899; Application IP address: Module 1#‟s LAN IP

address (10.10.100.254); -- See “Application Setting Page”

 LAN IP address: 10.10.99.254 (Different net segment with WAN port)

--See “AP Interface Setting Page”

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Figure 54 Configure Transparent Serial Port Connection (UDP)

Q4: Where to set WIFI232 module network protocol (TCP/UDP)?

 WIFI232 network protocol setting see “Application Setting Page” as below Figure,

 Protocol: TCP Server

 Only Port ID required: 8899 (Default)

Figure 55 Module Network Protocols: TCP/Server

 Protocol: TCP Client

 Application IP address required: it‟s target TCP server „s IP address;  Port ID required: 8899 (Default)

Figure 56 Module Network Protocol: TCP/Client

 Protocol: UDP

 No Server/Client selection required;  Application IP address required: it‟s target device „s IP address;

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 Port ID required: 8899 (Default)

Figure 57 Module Network Protocol: UDP

Q5: How to configure transparent serial port application: Two WIFI modules all configured as STA and connection through AP?

 Network structure as below figure:

 Module 1# Setting: ( We use WIFI232 as AP for this example)

 Works as AP mode and all default setting;

 Module 2# Setting:

 Works as STA mode; --See “Mode Selection Page”  WAN connection type: Static IP: 10.10.100.100; --See “STA Interface Setting Page”  Network Protocal:TCP/Server, Port ID: 8899; -- See “Application Setting Page”  LAN IP address: 10.10.99.254 (Different net segment with WAN port);

--See “AP Interface Setting Page”

 Module 3# Setting:

 Works as STA mode; --See “Mode Selection Page”  WAN connection type: Static IP: 10.10.100.101; --See “STA Interface Setting Page”  Network Protocal:TCP/Client, Port ID: 8899; Application IP address: Module 2#‟s WAN

IP address (10.10.100.100); -- See “Application Setting Page”

 LAN IP address: 10.10.98.254 (Different net segment with WAN port);

--See “AP Interface Setting Page”

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Figure 58 Two WIFI232 Modules Connection Through AP

Q6: How to avoid IP address confliction when apply WIFI232 module?

 The following address allocation method can avoid the IP address confliction for dynamic and

static IP address mixed application.

 Module dynamic IP address range from 100 to 200 for last IP address segment.

 Such as default IP: 10.10.100.254. When module works as AP, the IP address module

can allocate to STA is from 10.10.100.100 to 10.10.100.200;

 So, if user needs to set static IP for dedicated STA internal network, the available IP

address range can start from 10.10.100.1 to 10.10.100.99.

Q7: PC works as server, all WIFI modules works as data acquisition card and connect with PC, how to configure this application?

 Network structure as below figure: Three WIFI232 module setup 3 TCP links with PC server.

Module 1# works as AP and all devices connect to module 1# through WiFi interface;

 PC Setting:

 IP address: 10.10.100.100;  Network Protocal:TCP/Server, Port ID: 8899;

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 Module 1# Setting:

 Works as AP mode;  LAN IP address: 10.10.100.254;  Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;

 Module 2# Setting:

 Works as STA mode;  WAN connection type: Static IP: 10.10.100.101;  Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;  LAN IP address: 10.10.99.254 (Different net segment with WAN port);

 Module 3# Setting:

 Works as STA mode;  WAN connection type: Static IP: 10.10.100.102;  Network Protocal:TCP/Client, Port ID: 8899; Application IP address:10.10.100.100;  LAN IP address: 10.10.98.254 (Different net segment with WAN port);

Figure 59 Wireless Data Acquisition Card Setting

Q8: WIFI module support UDP multicast?

At present, all the WIFI module does not support UDP multicast function,IP multicast address range is "224.0.0.0~ 239.255.255.255”,When setting module, please don't set this IP section, if set, may cause the module can't normal start.

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Q9:WIFI module operates in STA mode, the PC how to get the IP module?

All wifi module supports UDP search,they will return to their respective IP, MAC, MID, detailed search process is as follows:

1. PC via UDP broadcast (broadcast address: xx.xx.xx.255, Port: 48899) sent a password, the default password is: "HF-A11ASSISTHREAD", the password can be used AT commands (AT + FASWD) set up,it's Up to 100 bytes.

2. After the module receives a password, if the password is correct, to the address (Unicast, Port: 48899) sends local IP address and MAC address and name of the module. (IP, MAC, MID as 10.10.100.254,888 B5D0000E2, guxin).

So you can get to the IP address of the module.

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Appendix b: external power shutdown mode reference design

Appendix c: Disclaimer

This document provides information about WIFI232 modules, this document does not grant any license to intellectual property rights. Except the responsibility declared in the product sale clause, WAVEAHARE does not assume any other responsibilities. In addition, WAVEAHARE does not make any warranties for the sale and use of this product, including the suitability of the product for a particular purpose, merchantability or fitness for any patent, copyright or other intellectual property infringement, etc. WAVEAHARE may make changes to specifications and product descriptions without notice.

Waveshare WIFI232 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual