Jinan USR IOT Technology WIFI232D2A Embedded WiFi Module User Manual GPON SFU System Design

Jinan USR IOT Technology Limited Embedded WiFi Module GPON SFU System Design

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Date Submitted2014-09-02 00:00:00
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Document TitleGPON SFU System Design
Document CreatorWPS Office 个人版
Document Author: Kevin Qiu

USR-WIFI232-D2 User Manual
www.usriot.com
D2
USR-WIFI232USR-WIFI232-D2
Embedded WiFi Module User Manual
Version：V1.0.0
Remarks: This module is applicable to USR-WIFI232-D2. For Other modules please refer to the
corresponding document.
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Table Of Contents
1 Quick Start..........................................................................................................................................6
1.1 Hardware connect................................................................................................................... 6
1.2 Network connection.................................................................................................................6
1.3 Communication test.................................................................................................................7
2 Product Overview...............................................................................................................................8
2.1 General Description.................................................................................................................8
1 Quick Start..........................................................................................................................................6
1.1 Hardware connect................................................................................................................... 6
1.2 Network connection.................................................................................................................6
1.3 Communication test.................................................................................................................7
2 Product Overview...............................................................................................................................8
2.1 General Description.................................................................................................................8
2.2 Device Features...................................................................................................................... 9
2.3 Device Paremeters................................................................................................................10
2.4 Key Application...................................................................................................................... 10
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...................................................................................................11
3 Hardware Introduction..................................................................................................................... 12
3.1 Pins Definition........................................................................................................................12
3.1.1 USR-WIFI232-D2 Pins Definition...............................................................................12
3.1.2 USR-WIFI232-D2 Size............................................................................................... 14
3.2 Antenna.................................................................................................................................. 14
3.2.1 On-board Chip Antenna..............................................................................................14
3.2.2 External Antenna........................................................................................................ 15
3.3 Evaluation Kit.........................................................................................................................16
3.4 Hardware Reference Design................................................................................................ 17
3.4.1 Hardware Typical Application..................................................................................... 17
3.4.2 10/100M Ethernet Interface....................................................................................... 18
3.4.3 UART Interface........................................................................................................... 18
3.4.4 Power Interface...........................................................................................................19
4 Modules Function Description.........................................................................................................19
4.1 User configuration process................................................................................................... 19
4.2 Working mode....................................................................................................................... 20
4.2.1 Transparent Transmission Mode............................................................................... 20
4.2.2 Serial command mode............................................................................................... 20
4.2.3 GPIO mode................................................................................................................. 22
4.2.4 HTTPD Client mode................................................................................................... 22
4.3 Wireless Networking............................................................................................................. 23
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4.3.1 STA.............................................................................................................................. 23
4.3.2 AP................................................................................................................................ 24
4.3.3 AP+STA....................................................................................................................... 24
4.4 Ethernet Interface Communication.......................................................................................26
4.4.1 USR-WIFI232-D2 Ethernet Interface Networking (As AP)....................................... 26
4.4.2 USR-WIFI232-D2 Ethernet Interface Networking (As STA, N-Ver)......................... 26
4.4.3 USR-WIFI232-D2 Ethernet Interface Networking (As STA, Z-Ver)..........................27
4.5 WI-FI parameter setting........................................................................................................ 27
4.5.1 Auto- Frequency Function.......................................................................................... 27
4.5.2 Security....................................................................................................................... 27
4.5.3 Search Function for STA............................................................................................ 28
4.5.4 Address Binding..........................................................................................................28
4.6 UART Frame Scheme...........................................................................................................28
4.6.1 UART Free-Frame...................................................................................................... 28
4.6.2 UART Auto-Frame...................................................................................................... 29
4.7 Network Setting..................................................................................................................... 29
4.7.1 Socket A...................................................................................................................... 29
4.7.2 Socket B...................................................................................................................... 30
4.8 New function.......................................................................................................................... 30
4.8.1 TCP password authentication.................................................................................... 30
4.8.2 Upload ID.................................................................................................................... 30
4.8.3 Self-adaption Baudrate...............................................................................................30
4.8.4 WEB IO....................................................................................................................... 31
4.8.5 Keepalive.................................................................................................................... 31
4.8.6 Multiple STA parameters............................................................................................ 31
4.8.7 Websocket.................................................................................................................. 31
4.9 Palmodic Signal.....................................................................................................................32
4.10 Parameters Configuration...................................................................................................32
4.11 Firmware Upgrade...............................................................................................................33
5 Web Accessing and AT+instruction set...........................................................................................34
5.1 Configuration via Web Accessing.........................................................................................34
5.1.1 Open Web Management Interface.............................................................................34
5.1.2 Quick Configure.......................................................................................................... 35
5.1.3 Mode Selection Page................................................................................................. 35
5.1.4 AP Interface Setting Page.......................................................................................... 36
5.1.5 STA Interface Setting Page........................................................................................ 36
5.1.6 Application Setting Page............................................................................................ 37
5.1.7 Ethernet Setting.......................................................................................................... 38
5.1.8 HTTPD Client Mode................................................................................................... 39
5.1.9 WEB IO....................................................................................................................... 39
5.1.10 Device Management Page.......................................................................................40
5.2 AT+instruction Introduction................................................................................................... 41
5.2.1 Configuration Mode.................................................................................................... 41
5.2.1.1 Switch to Configuration Mode......................................................................... 41
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5.2.2 AT+ Instruction Set Overview.....................................................................................42
5.2.2.1 Instruction Syntax Format................................................................................43
5.2.2.2 AT+ Instruction Set...........................................................................................44
5.2.2.2.1 AT+E.......................................................................................................46
5.2.2.2.2 AT+ENTM...............................................................................................46
5.2.2.2.3 AT+NETP............................................................................................... 46
5.2.2.2.4 AT+UART............................................................................................... 46
5.2.2.2.5 AT+ UARTF............................................................................................47
5.2.2.2.6 AT+ UARTFT......................................................................................... 47
5.2.2.2.7 AT+ UARTFL..........................................................................................48
5.2.2.2.8 AT+TMODE............................................................................................48
5.2.2.2.9 AT+WMODE.......................................................................................... 48
5.2.2.2.10 AT+WSKEY..........................................................................................48
5.2.2.2.11 AT+WSSSID.........................................................................................49
5.2.2.2.12 AT+ WSLK........................................................................................... 49
5.2.2.2.13 AT+WEBU............................................................................................50
5.2.2.2.14 AT+WAP...............................................................................................50
5.2.2.2.15 AT+WAKEY..........................................................................................50
5.2.2.2.16 AT+HIDESSID..................................................................................... 51
5.2.2.2.17 AT+MSLP............................................................................................. 51
5.2.2.2.18 AT+WSCAN......................................................................................... 52
5.2.2.2.19 AT+ TCPLK.......................................................................................... 52
5.2.2.2.20 AT + TCPDIS....................................................................................... 52
5.2.2.2.21 AT+ WANN...........................................................................................52
5.2.2.2.22 AT+ LANN............................................................................................ 53
5.2.2.2.23 AT+DHCPDEN.....................................................................................53
5.2.2.2.24 AT+ DHCPGW..................................................................................... 54
5.2.2.2.25 AT+ TCPTO......................................................................................... 54
5.2.2.2.26 AT+ MAXSK......................................................................................... 54
5.2.2.2.27 AT+TCPB............................................................................................. 54
5.2.2.2.28 AT+TCPPTB........................................................................................ 55
5.2.2.2.29 AT+TCPADDB..................................................................................... 55
5.2.2.2.30 AT+TCPTOB........................................................................................ 55
5.2.2.2.31 AT+TCPLKB.........................................................................................56
5.2.2.2.32 AT+STTC............................................................................................. 56
5.2.2.2.33 AT+DOMAIN........................................................................................ 56
5.2.2.2.34 AT+FRLDEN........................................................................................ 56
5.2.2.2.35 AT+FUDLX...........................................................................................57
5.2.2.2.36 AT+MMID............................................................................................. 57
5.2.2.2.37 AT+IDFIR............................................................................................. 57
5.2.2.2.38 AT+IDEVE............................................................................................58
5.2.2.2.39 AT+AABR............................................................................................. 58
5.2.2.2.40 AT+RELD............................................................................................. 58
5.2.2.2.41 AT+Z.....................................................................................................58
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5.2.2.2.42 AT+MID................................................................................................ 58
5.2.2.2.43 AT+VER............................................................................................... 59
5.2.2.2.44 AT+H.................................................................................................... 59
5.2.2.2.45 AT+ HTTPURL.....................................................................................59
5.2.2.2.46 AT+ HTTPTP....................................................................................... 59
5.2.2.2.47 AT+ HTTPPH....................................................................................... 60
5.2.2.2.48 AT+ HTTPCN.......................................................................................60
5.2.2.2.49 AT+ HTTPUA....................................................................................... 60
5.2.2.2.50 AT+EPHYA...........................................................................................60
5.2.2.2.51 AT+EPHYB.......................................................................................... 61
6 USR-WIFI232-D2 Usage Introduction............................................................................................ 61
6.1 Module Debug....................................................................................................................... 61
6.1.1 Software Debug Tools................................................................................................ 61
6.1.2 Network Connection................................................................................................... 61
6.1.3 Debug.......................................................................................................................... 62
6.2 Use Cases............................................................................................................................. 64
6.2.1 Wireless Control Application...................................................................................... 64
6.2.2 Remote Management Application..............................................................................64
6.2.3 Transparent Serial Port Application........................................................................... 65
6.2.4 Wireless Data Acquisition Card Application.............................................................. 66
Appendix A: Questions and Answers................................................................................................. 68
Q1: How to configure transparent serial port application (TCP protocol) with two WIFI
modules?......................................................................................................................................68
Q2: Where to Set WIFI Module LAN IP and WAN IP through Web Page？............................ 69
Q3: How to configure transparent serial port application (UDP protocol) with two WIFI
modules?......................................................................................................................................69
Q4: Where to set USR-WIFI232-D2 module network protocol (TCP/UDP)?........................... 70
Q5: How to configure transparent serial port application: Two WIFI modules all configured as
STA and connection through AP?...............................................................................................71
Q6: How to avoid IP address confliction when apply USR-WIFI232-D2 module?...................72
Q7: PC works as server, all WIFI modules works as data acquisition card and connect with
PC, how to configure this application?....................................................................................... 72
Q8: WIFI module support UDP multicast?................................................................................. 73
Q9:WIFI module operates in STA mode, the PC how to get the IP module?...........................74
Appendix b: evb reference design..................................................................................................... 75
Appendix c: external power shutdown mode reference design........................................................76
Appendix D: The FCC statement....................................................................................................... 76
Appendix e: Contact Information........................................................................................................78
Appendix f: Disclaimer........................................................................................................................ 78
Appendix g: History.............................................................................................................................78
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1 Quick Start
USR-WIFI232-D2 series product is used to transmit data between RS232 and WIFI or Ethernet
TCPIP transparently, user can update the product to WIFI or Ethernet interface control without
knowing the WIFI ,Ethernet 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 or Ethernet 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 USR-WIFI232-D2 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 this module, we need connect module RS232 to PC and also WIFI or Ethernet to
PC.
In order to test the communication between serial and WIFI or Ethernet network, we need to
connect the serial port to PC, and also connect WIFI or Ethernet networks to PC.
WIFI or
Ethernet
- 18
DC 5 E R
PO
RS2
32
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 USR-WIFI232-D2-EVK
evaluation board for users to choose.
1.2 Network connection
Open Wi-Fi, search network on the PC, as shown in below, USR-WIFI232-AP_3378 is the default
network name (SSID) of the module.
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Figure 2 WIFI Search
Join the network, choose to automatically obtain IP, USR-WIFI232-D2 module supports DHCP
Server feature and is enabled by default.
Figure 3 WIFI connection
Now, link led of USR-WIFI232-D2-EVK Evaluation Board is lighting.
1.3 Communication test
Module’s default setting:
SSID:USR-WIFI232-D2_xxxx(xxxx is the last of mac address);
� SSID:
Encryption
mode
�
mode::open，none;
UART:57600,8,1,None;
� UART:
� Network parameters
parameters：TCP,Server,8899,10.10.100.254;
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� IP:
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 or Ethernet communication, the steps are as follows:
1. Open test software USR-TCP232-Test;
2. COM Settings area (left):
Choose COM port witch has connect the module, there is COM3, 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 or Ethernet -> Module WIFI or Ethernet -> Module RS232 -> PC
RS232.
Figure 4 serial / network transmission test
2 Product Overview
2.1 General Description
USR-WIFI232-D2 module is an integration of 802.11 b/g/n wi-fi module,which provide a wireless
interface and a Ethernet interface to any equipment with a Serial interface for data transfer.
The module used to MAC, Ethernet interface,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.
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USR-WIFI232-D2 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.
USR-WIFI232-D2 as a hotspot can accommodate 32 clients simultaneously wi-fi access, but also
can accommodate 32 TCP client.
Figure 5 Block diagram
2.2 Device Features
�
Support IEEE802.11b/g/n Wireless Standards
�
Support TCP/IP/UDP Network Protocols
�
Support UART/GPIO/Ethernet Data Interface
�
/AP+STA Mode
Support Work As STA/AP
STA/AP/AP+STA
�
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
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�
mm
Small Size: 45*32
45*32mm
�
FCC/CE Certificated
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2.3 Device Paremeters
Table 1
Class
Wireless
Parameters
USR-WIFI232-D2 Module Technical Specifications
Item
Parameters
Certification
Wireless standard
Frequency range
FCC/CE
802.11 b/g/n
2.412GHz-2.484GHz
802.11b: +20 dBm (Max.)
802.11g: +18 dBm (Max.)
802.11n: +15 dBm (Max.)
Configurable
802.11b: -89 dBm
802.11g: -81dBm
802.11n: -71dBm
External:I-PEX Connector
Internal:On-board chip antenna
UART: 1200bps - 230400bps
GPIOs
Ethernet: 100Mpbs
3.3V (+/-5%)
170mA~300mA
Transmit Power
Receiver Sensitivity
Antenna Option
Data Interface
Hardware
Parameters
Software
Parameters
Operating Voltage
Operating Current
Operating
Temperature
Storage Temperature
Dimensions and Size
Network Type
Security Mechanisms
Encryption
Work Mode
Serial command
Network Protocol
Max. TCP Connection
User Configuration
-25℃- 85℃
-40℃- 125℃
45×32×8mm
Station /AP mode/STA+AP
WEP/WAP-PSK/WAP2-PSK/WAPI
WEP64/WEP128/TKIP/AES
Transparent Transmission
AT+instruction set
TCP/UDP/ARP/ICMP/DHCP/DNS/HT
TP
32
Web Server＋AT command config.
2.4 Key Application
�
�
�
�
Remote equipment monitoring
Industrial sensors and controls
Asset tracking and telemetry
Home automation
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�
Medical devices
2.5 Package Information
2.5.1
Recommended Reflow Profile
Figure 6 Reflow Soldering Profile
NO.
Table 2 Reflow Soldering Parameter
Item
Temperature (Degree)
Time(Sec)
Reflow Time
Peak-Temp
Time of above 220
35~55 sec
260 max
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.
� 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:
(1) Top side SMT and reflow à (2) Bottom side SMT 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
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Figure 7 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
3.1 Pins Definition
3.1.1
USR-WIFI232-D2 Pins Definition
D2
Figure 8 USR-WIFI232USR-WIFI232-D2
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D2 Pins Map
Figure 9 USR-WIFI232USR-WIFI232-D2
D2 Pins Definition
Table 3 USR-WIFI232USR-WIFI232-D2
Pin
Description
Name
Ethernet1 Output+
Ethernet1 OutputEthernet1 Input+
Ethernet1 Input-
TX1+
TX1RX1+
RX1-
Directi
Directio
Ethernet1 LED
NET1_LED
UART Data Transmit
UART_TXD
GPIO
UART Data Receive
GPIO3
UART_RXD
I/O
GPIO4
UART_RTS
I/O
GPIO
UART sends request
of data transmission
GPIO
GPIO5
I/O
UART_CTS
10
UART receives data
transmission
permission
Module reset signal
nRST
11
Output 1.8V
1.8V
12
/14
13
13/14
GND
VCC
GND
3.3V
Power
Power
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Note
+1.8V Ethernet Data
Interface
Support transformer and
direct connection (AC
couple) mode.
Ethernet1 pilot light
If not use UART function,
this 4 pins can be
configured as GPIO pins,
and can change GPIO pin
status through AT
command.
“Low ( 0 )” effective reset
input.
The reset duration should be
kept more than 300ms
1.8V@300mA, to the Eth
application
Ground
3.3V @ 350mA power input
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15
GND
GND
Power
Ground
16
WiFi status Indication
Link
“0”WIFI
available, “1”connection.
17
Indicate the module
status of power on
process
Ready
18
Restore configuration
Reload
19
Ethernet2 LED
NET2_LED
20
Ethernet2 Output+
TX2+
21
Ethernet2 Output-
TX2-
22
Ethernet2 Input+
RX2+
23
Ethernet2 Input-
RX2-
connection
No WIFI
“0” - Finish module boot up
process;
“1” - Module boot up not
finish.
Module will Restore factory
default configuration after set
this pin “0” more than 1s,
then set “1”.
Ethernet2 pilot light
+1.8V Ethernet Data
Interface
Support transformer and
direct connection (AC
couple) mode.
3.1.2
USR-WIFI232-D2 Size
USR-WIFI232-D2 module Mechanical Size:
Figure 10
A/B Mechanical Size
USR-WIFI232USR-WIFI232-A/B
3.2 Antenna
3.2.1
On-board Chip Antenna
USR-WIFI232-D2 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:
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Be in the user's PCB board, and the Light blue 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 11
USR-WIFI232-D2 Chip Antenna Keep Out Region
USR technological suggestions USR-WIFI232-D2 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 12
Suggested Module Placement Region
3.2.2
External Antenna
USR - WIFI232 - D2 module can be done by switching the resistance external antenna interface
to apply different customer application.If user select external antenna, USR-WIFI232-D2 modules
must be connected to the 2.4G antenna according to IEEE 802.11b/g/n standards.
The antenna parameters required as follows:
Figure 13
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As shown in figure, switch resistance is normally in the red areas.For external antenna, the
resistance change to blue area.
Table 4 USR-WIFI232-D2 External Antenna Parameters
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
3.3 Evaluation Kit
USR 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 USR-WIFI232-D2 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.
Figure 14
D2 module Evaluation Kit
USR-WIFI232USR-WIFI232-D2
D2 Evaluation Kit Interface Description
Table 5 USR-WIFI232USR-WIFI232-D2
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Description
5V power input connector
Male serial jack of 9-pin,and used to connect to
PC
100M Eth Interface
100M Eth Interface
2x12 2.54mm DIP connector, connect WIFI
module
USR-WIFI232-D2 User Manual
Function
External
Interface
Name
DC jack
DB9
RJ-45(1)
RJ-45(2)
Module
LED
Button
Power
(Red)
NET1
NET2
Ready
Link
Reset
Reload
3.3V Power Indicator
Ethernet1 LED
Ethernet2 LED
Ready/GPIO Indicator
Link/GPIO Indicator
Used to reset the module.
Module restore to factory default configuration.
3.4 Hardware Reference Design
3.4.1
Hardware Typical Application
Figure 15
USR-WIFI232-D2 Hardware Typical Application
Notes
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.
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Ready
Ready-- 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.
Link
Link-- 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
nReload- Module restore to factory default configuration.Input. Logics “0” effective.
User can assert nReload signal “0” more than 3’s through button or MCU pin, then release,
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. If not use this function, then can use AT
command AT+FRLDEN=off to disable it.
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.
3.4.2
10/100M Ethernet Interface
User board put Ethernet transformer and RJ-45 connector. This is a general 10/100M Ethernet
phy layer connection. The reference design as following:
Figure 16
Ethernet Reference Design with Transformer
3.4.3
UART Interface
UART interface is the serial data transmition interface mainly used for USR-WIFI232-D2 modules.
User can add RS-232 chipset on user board and convert the signal to RS-232 voltage to
communicate with outside equipment or sensors. USR-WIFI232-D2 modules UART interface
include 4 general signals: TXD/RXD/RTS/CTS. The hardware reference design with RS-232
chipset as following:
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Figure 10 UART Interface Reference Design
Notes: TXD pin is also hardware configuration pin internal module. So this pin MUST pull-down
during module power up. USR-WIFI232-D2 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.
3.4.4
Power Interface
USR-WIFI232-D2 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,one 10uF and one 100nF 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 USR-WIFI232-D2 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:
�
Wireless Network Parameters
� Wireless Network Name（SSID）
� Security Mode
� Encryption Key
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�
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 transmission/Serial command mode/GPIO mode/HTTPD Client mode
The following sections will introduce specific to each part in detail.
4.2 Working mode
4.2.1
Transparent Transmission Mode
USR-WIFI232-D2 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.
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.
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frame
header
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Table 6 Protocol table of Serial command mode
length
functio
Backup
Destinati
Target
Data
data area
on port
address
byte
(n+m+5)
Sum
check
frame header
header：
0x55 0xAA（Constant）
Length
Length：
Starting from the function byte, to Sum check (does not contain the sum check) all bytes.
High byte at the front
Function byte
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
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
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.
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)
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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
USR-WIFI232-D2 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.
Set GPIOn as input, Response GPIO OK or GPIO NOK;
� GPIO n IN,
� 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;
Set GPIOn as output and switch the output status, Response GPIO OK or
� GPIO n SW,
�
�
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 6,7,8,9,16,17 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.
4.2.4
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
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
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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
USR-WIFI232-D2 module can be configured as both wireless STA and AP base on network type.
Logically there are two interfaces in USR-WIFI232-D2. One is for STA, and another is for AP.
When USR-WIFI232-D2 works as AP, other STA equipments are able to connect to wireless LAN
via USR-WIFI232-D2 module. Wireless Networking with USR-WIFI232-D2 is very flexible.
Following figure shows the functional architecture of USR-WIFI232-D2 module:
Figure 18
USR-WIFI232-D2 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.
AP
U S R -WIFI2 3 2 D2
U S R -WIFI 2 3 2 D2
U S R -WIFI 2 3 2 D2
UART
User Device
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USR-WIFI232-D2 Basic Wireless Network Structure
4.3.2
AP
Because USR-WIFI232-D2 can be set to AP, can also be set to STA, so the USR-WIFI232-D2
can be achieved easily wireless ad hoc network.
As showing in the figure below, USR-WIFI232-D2 (1) can be treat as an AP, and USR-WIFI232D2 (2), USR-WIFI232-D2 (3) and the laptop are STAs connected to USR-WIFI232-D2 (1).
Meanwhile, all USR-WIFI232-D2 modules can connected to user device via UART interface. All
USR-WIFI232-D2 modules can be operated and managed through the laptop. So it is convenient
to O&M all USR-WIFI232-D2 modules. Moreover, in such Adhoc network structure, the whole
coverage of a wireless network can be extended easily.
PC
U S R - W I F I 2 3 2 -D2
U S R -W I F I 2 3 2 -D2
UART
User Device
Figure 20
U S R -W I F I 2 3 2 -D2
UART
User Device
USR-WIFI232-D2 STA Network Structure
4.3.3
AP+STA
USR-WIFI232-D2 module support AP+STA network mode, means module support one AP
interface and one STA interface at the same time, as following figure,
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User
Device
AP
UART
Phone
Tcp
Client
Tcp
server
Tcpb
Tcp server
U S R -W I F I 2 3 2 -D2
Figure 21
USR-WIFI232-D2 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
USR-WIFI232-D2 module provides one 100M Ethernet interface. With this Ethernet interface,
user can easily realize the three interface (WiFi, UART, and Ethernet) intercommunication and
networking. USR-WIFI232-D2 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, USR-WIFI232-610 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
USR-WIFI232-D2 Ethernet Interface Networking (As AP)
PC1
PC2
U S R -W I F I 2 3 2 -D2
1 0 0 M Eth
I P ：1 0 .1 0 .1 0 0 .1 0 1
GateWay ：
1 0 .1 0 .1 0 0 .2 5 4
Figure 22
I P ：1 0 .1 0 .1 0 0 .1 0 0
GateWay ：
1 0 .1 0 .1 0 0 .2 5 4
AP
I P ：1 0 .1 0 .1 0 0 .2 5 4
USR-WIFI232-D2 Ethernet Interface Networking (As AP)
USR-WIFI232-D2 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 USR-WIFI232-D2 and they can
ntercommunication with this method.
4.4.2
USR-WIFI232-D2 Ethernet Interface Networking (As STA, N-Ver)
PC1
1 0 0 M Eth
IP：
1 0 .1 0 .1 0 0 .1 0 1
GateWay ：
1 0 .1 0 .1 0 0 .2 5 4
AP
U S R -W I F I 2 3 2 -D2
IP ：
1 0 .1 0 .1 0 0 .
254
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PC 2
STA N -V e r
IP ：
1 9 2 .1 6 8 .1.1 0 1
GateWay ：
1 9 2 .1 6 8 .1.1 0 1
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IP：
1 9 2 .1 6 8 .1.1
IP：
1 9 2 .1 6 8 .1.1 0 0
GateWay：
1 9 2 .1 6 8 .1.1
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USR-WIFI232-D2 Ethernet Interface Networking (As STA
STA,, N-Ver
N-Ver))
Figure 23
USR-WIFI232-D2 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 USRWIFI232-D2 works as router mode), but PC2 can’t active initiate a connection to PC1.
4.4.3
USR-WIFI232-D2 Ethernet Interface Networking (As STA, Z-Ver)
PC1
U S R -W I F I 2 3 2 -D2
1 0 0 M Eth
PC2
STA Z -V e r
IP ：
1 9 2 .1 6 8 .1.1 0
GateWay ：
1 9 2 .1 6 8 .1.1
I P ：1 9 2 .1 6 8 .1.1 0 1
GateWay ：
1 9 2 .1 6 8 .1.1
Figure 24
AP
IP：
1 9 2 .1 6 8 .1.1
I P ：1 9 2 .1 6 8 .1.1 0 0
GateWay ：
1 9 2 .1 6 8 .1.1
USR-WIFI232-D2 Ethernet Interface Networking (As STA
STA,, Z-Ver
Z-Ver))
For above networking, USR-WIFI232-D2 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, USR-WIFI232-D2 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
4.5.1
Auto- Frequency Function
When module works as STA, USR-WIFI232-D2 will adjust its wireless channel to keep the same
channel with associated AP and connect in.
When module works as AP and USR-WIFI232-D2 enable Auto-frequency function, then when
module boot up, it will select the best wireless channel based on surrounding environment.
4.5.2
Security
USR-WIFI232-D2 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
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�
WPA2-PSK/TKIP
�
WPA2-PSK/AES
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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 25
4.5.4
Search page
Address Binding
USR-WIFI232-D2 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.
4.6 UART Frame Scheme
4.6.1
UART Free-Frame
USR-WIFI232-D2 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), USR-WIFI232-D2 will think it as the end of one frame and
transfer this free-frame to WiFi port, or USR-WIFI232-D2 will receive UART data until 4K bytes,
then transfer 4KB frame to WiFi port.
USR-WIFI232-D2’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.
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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
USR-WIFI232-D2 support UART auto-frame function. If user select open this function and setting
auto-frame 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 autoframe 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
USR-WIFI232-D2 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.
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:
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4.7.2
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Multi-TCP Link Data Transmition Structure
Socket B
Socket B has one work mode: TCP Client, please refer to the AT + SOCKB command 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
This chapter is based on the function of V4.02.10.USR13 and above, if not this version you can
skip this section.
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.
The TCP connection of this function can be Webpage in "TCP connection password
authentication" is opened or disable. Please refer to the specific "5.1.2" 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 5.2.1.4.325.2.1.4.34 section.
4.8.3
Self-adaption Baudrate
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This feature, please cooperate with our company's virtual serial port software use.
Use a serial port connected module, and use the at command "at + AABR = on" open this
function and restart.In the USR - VOCM software "synchronous baud rate (RFC2217 similar)" is
selected, the following figure.
Figure 27
RFC 2217
In this way, the module of baud rate will be as the USR-VCOM to change at any time, and don't
have to restart the module.If restart the module, baud rate and will come back to before.
4.8.4
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.
4.8.5
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.
4.8.6
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 4.5.4.
4.8.7
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
Page:10.10.100.254/websocketen.html)
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Figure 28
www.usriot.com
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.
4.9 Palmodic Signal
Base on selected factory default setting, “Ready” 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.
Notes:
This function is user selected factory setting and RELD instruction will not effective for this
function. If user not requires this function, the default factory setting is Status One. Contact with
USR Technology for more detailed support.
4.10
Parameters Configuration
USR-WIFI232-D2 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 USRWIFI232-D2 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
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parameters through serial interface command. Refer to “AT+instruction set” chapter for more
detail.
Notes:
USR can customized the parameters setting as customer request and ship USR-WIFI232-D2
modules with these parameters as factory default configuration. It will reduce user’s module
configuration time for mass production. Also, if user need different parameters setting for every
module, USR can provide the auto-configuration tool to speed up the module configuration
duration. Please contact USR technical interface to acquire this tool if required.
4.11
Firmware Upgrade
USR-WIFI232-D2 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 USR-WIFI232-D2 modules, user may need some configuration. User can connect
to USR-WIFI232-D2 module’s wireless interface with following default setting information and
configure the module through laptop.
Table 7 USR-WIFI232-D2 Web Access Default Setting
Parameters
Default Setting
SSID
USR-WIFI232-AP_xxxx
IP Address
10.10.100.254
255.255.255.0
Subnet Mask
admin
User Name
Password
admin
5.1.1
Open Web Management Interface
Step 1: Connect laptop to SSID “USR-WIFI232-AP_xxxx” of USR-WIFI232-D2 module via
wireless LAN card;
http://10.10.100.254
Step 2: After wireless connection OK. Open browser and access “http://10.10.100.254
http://10.10.100.254”;
Step 3: Then input user name and password in the page as following and click “OK” button.
Figure 29
Open Web Management page
The USR-WIFI232-D2 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 nine pages: “Quick Configure”,“Mode Selection”,” AP Interface
Setting”,”STA Interface Setting”,”Application Setting”, “Ethernet Setting”,’’HTTPD Client
mode”,“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 30
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", "GPIO mode"and””HTTPD-Client Mode”.
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Figure 31
www.usriot.com
Mode Selection Page
5.1.4
AP Interface Setting Page
This page use to setting the parameters when USR-WIFI232-D2 module works as AP.
Figure 32
AP Interface Setting Page
5.1.5
STA Interface Setting Page
This page use to setting the parameters when USR-WIFI232-D2 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 33
www.usriot.com
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 34
www.usriot.com
Application Setting Page
Notes:
Generally, Network protocols support three modes: TCP Server
Server, TCP Client
Client, UDP Server
Server, UDP
Client
Client.
When the module is configured to UDP server side, the module will memory the UDP client end
of the last communication, and communication with this UDP client.While the UDP client mode
will only with the target IP address and communication.When set to the TCP Server, do not need
to enter the IP address.For other Settings, need to fill in the need to connect each other IP
address.Fill in port with protocol port number, at the ends of the communication port number must
be the same.
The Socket B only as a TCP client terminal to communicate with the server.
TCP connection password authentication: when the module in the TCP server mode, password
authentication on the TCP client connect to.
Note: this verification is only in a module as a TCP server.After the opening, the TCP client connected
module, the first data which sent to the module is password and carriage returns.The password is the
password to login page default is "admin".Such as the default when sending the first data should be
"0x61 0x64 0x6D 0x69 0x6E 0x0D 0x0A" (hex).
5.1.7
Ethernet Setting
This page is used to set two Ethernet front-end ports of the module, two Ethernet front-end ports
can be open or closed.And so the second 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:
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Figure 35
www.usriot.com
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 36
5.1.9
HTTPD Client Mode Page
WEB IO
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Figure 37
5.1.10
www.usriot.com
WEB IO Page
Device Management Page
This page use to manage USR-WIFI232-D2 module general setting, such as administrator setting,
restart module button, restore factory default setting button, and update firmware through webpage.
Figure 38
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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 USR-WIFI232-D2 power up, it will default works as transparent transmission mode, then
user can switch to configuration mode by serial port command. USR-WIFI232-D2 UART default
parameters setting as below figure
Figure 39
USR-WIFI232-D2 Default UART Port Parameters
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
+ok”” to go into AT+
instruction set configuration mode.
Figure 40
Switch to Configuration Mode
Notes:
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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 wrong 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.
Figure 41
”AT+H
AT+H”” Instruction for Help
We supply software USR-WIFI232-Setup to send command easily, software setup:
Figure 42
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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.
Figure 43
software of USR-WIFI232-Setup
Above is by COM, also you can send by WIFI:
First, connect with PC, open the software, see Net part
Figure 44
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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�
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Command Message
… ]
AT+[op][para-1,para-2,para-3,para-4
AT+[op][para-1,para-2,para-3,para-4…
�
�
�
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;
: ”Enter” Key, it’s 0x0a or 0x0d in ASCII;
Notes
Notes: When input AT+Instruction, “AT+” character will display capital letter automatic
and other parts will not change as you input.
�
Response Message
…]
+[op] [para-1,para-2,para-3,para-4
[para-1,para-2,para-3,para-4…
�
�
+: Prefix of response message;
�
RSP: Response string;
�
“ok” : Success
�
“ERR”: Failure
�
[op] : =
�
[para-n]: Parameters if query command or Error code when error happened;
�
: ASCII 0x0d;
�
: ASCIII 0x0a;
Error Code
Table 8 Error Code Description USR-WIFI232-D2 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
Instruction

ENTM
NETP
UART
Table 9 AT+ Instruction Set List
Description
NULL
Open/Close show back function
Set module into transparent transmission mode
Set/Query network protocol parameters
Set/Query serial port parameters
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UARTF
UARTFT
UARTFL
TMODE
WMODE
WSKEY
WSSSID
WSLK
WEBU
WAP
WAKEY
HIDESSID
MSLP
WSCAN
TCPLK
TCPDIS
WANN
LANN
DHCPDEN
DHCPGW
TCPTO
MAXSK
TCPB
TCPPTB
TCPADDB
TCPTOB
TCPLKB
STTC
DOMAIN
FRLDEN
RELD
FUDLX
MMID
IDFIR
IDEVE
AABR
MID
VER
HTTPURL
HTTPTP
HTTPPH
HTTPCN
HTTPUA
EPHYA
EPHYB
USR-WIFI232-D2 User Manual
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Open/Close UART auto-frame function
Set/Query UART auto-frame trigger time
Set/Query UART auto-frame trigger length
Set/Query data transmission mode
(transparent transmission or agreement transmission)
Set/Query WIFI work mode (AP or STA)
Set/Query WIFI security parameters as STA
Set/Query WIFI target AP SSID parameters as STA
Query WiFi link status as STA
Set/Query WEB page login parameters
(User Name and Password)
Set/Query WIFI parameters as AP
Set/Query WIFI security parameters as AP
Set/Query hide AP’s SSID
Set modules into power save mode.(Turn OFF WiFi)
Seek AP when module works as STA mode
Query if TCP link already build-up
Open/Cose TCP (Only TCP Client available)
Set/Query WAN setting, only effective as STA mode
Set/Query LAN setting, only effective as AP mode
Enable/Disable LAN DHCP server function
Set/Query DHCP gateway address
Set/Query TCP timeout
Set/Query maxima TCP connection
Open/Close TCPB function
Set/Query TCPB port number
Set/Query TCPB server address
Set/Query TCPB time out time
Query TCPB link status
Enable/Disable STA port scan function
Set/Query domain of module webpage
Enable/Disable nReload pin function
Restore to factory default setting
Open / close the 485 function
Device ID
Send an ID when module connection is established
Every time to send data to send ID
Open / close baud rate adaptive function
Query module ID information
Query module software version information
Help
Set /Query HTTP server IP address and Port Number
Set /Query HTTP request type
Set/Query HTTP protocol header path
Set/Query Connection of HTTP protocol header
Set/Query User-Agent of HTTP protocol header
Open/Close ETH1 interface
Open/Close ETH2 interface
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Notes: USR-WIFI232-D2 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
+ok< LF >< LF >
When USR-WIFI232-D2 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
+ok< LF >< 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
+ok=< LF >< LF >
�
Set Operation
AT+NETP=
+ok< LF >< 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 USR-WIFI232-D2 module boots up again, the setting will be effective.
5.2.2.2.4 AT+UART
�
Function: Set/Query serial port parameters;
�
Format:
�
Query Operation
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AT+UART
+ok=< LF >< LF >
�
Set Operation
AT+UART=
+ok< LF >< LF >
�
Parameters:
�
baudrate:
�
50,75,110,134,150,200,300,600,1200,1800,2400,4800,9600,19200,38400,576
00,115200,230400,345600,460800
�
data_bits:
�
�
stop_bits:
�
�
1,2
parity:
�
�
5,6,7,8
NONE,EVEN,ODD,MARK,SPACE
flowctrl：hardware flow control (CTSRTS)
�
NFC: No flow control
�
FC: flow control
After USR-WIFI232-D2 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
+ok=< LF >< LF >
�
Set Operation
AT+ UARTF=
+ok< LF >< 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
+ok=
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