LS-UART-WiFi Module User Manual May 2010
Contents
1. gt Privacy Ke Its length ie 54 bytes It defines the privacy key that the target network uses For different encryption method the definition of privacy key framework is as following WEP typedef situri KEY WEP NT8U KeyLength INTSU Keylndex INT8U Groupsl4 131 KEY WEP PI edef struct KEY_WPI i T8U Unicast 32 KEY W pagea COMP edef struct KEY_CCMP i T8U ME My IKEY COMP gt Data Type Its length is 1 byte It defines the data format of Link Layer Valid values are O RAW 1 UDP 2 TCP gt Port Its length is 2 bytes It defines service port The order of its bytes uses BigEndian namely the port number 6000 indicates 0x17 0x70 gt StalpAddr Its length is 4 bytes It defines the IP address of WLAN module itself The order of its bytes uses BigEndian namely the address 192 168 1 1 indicates OxCO OxA8 0x01 0x01 gt SubnetMask Its length is 1 byte It defines the subnet mask of the network which the WLAN module is in Its valid value is 0 no setting 1 subnet mask 255 255 255 0 2 subnet mask 255 255 0 0 3 subnet mask 255 0 0 0 others reserved 44 50 www linksprite com S LinkSprite gt SubnetGate Its length is 4 bytes It defines the subnet gate IP address of the network which the WLAN module is in and its format is as above It needs to note that according to the specific SubnetMask value the valid data filed length of SubnetGate is different and2. Notice Module disconnected 8 ByteSize No Parity 1 Stopbit V ACK l Scan Reset Parameters Transmition Input Bj repeat per 100 ms Stop Send TXT Sel File Send File Clear Status Bss info TX bytes 0 Hot connect RX bytes 0 The client software connects to WLAN module through the computer serial port and achieves the following functions gt Serial Configure The choice of serial baud rate includes 19200 38400 57600 115200 bps 17 50 www linksprite com S LinkSprite gt Sending control command Control commands can be sent to WLAN module by clicking the buttons the supported commands include scanning network join network leave network parameter configuration reset gt Receiving control message It analyzes the control message it receives and displays the result in the export window gt Parameters configuration It analyzes and modifies the system parameters and the seven groups of network parameters of WLAN module In the connection status text data or document can be sent to or received from the server software through wireless network gt Serial Data Detection It can snatch the data frames of serial communication It provides a convenient method for user s further development using the UART serial protocol 3 3 Server Software Server Receive window TCP RX bytes 0 Port 6000 Status Transmit window Remote IP
3. 36 50 www linksprite com S LinkSprite In versions newer than 1 53 this parameter is defined as signal strength and is used to return the strength of signal of the target network The range of its value is 0 255 0 indicates strongest signal 255 indicates weakest signal CH Channel number BSSID BSSID of network LEN Length of SSID SSID SSID of network 4 3 4 Command to Connect to a Network l l byte byte acta eam FLG 0x01 IDX 0 indicates default configuration network 1 7 indicate which group of network configuration parameters is used others not defined 4 3 5 Message of Network Connected l byte byte alterable length si t N v A y N j l 6 l byte byte byte FLG 0x41 RES 0 indicates connection is successful Others connection is failed and the latter fields after RES are insignificant CH Channel number BSSID BSSID of network LEN Length of SSID 37 50 www linksprite com X LinkSprite SSID SSID of network 4 3 6 Command to disconnect network l l byte byte OOI FLG 0x02 RES 0 disconnects normally Others disconnect abnormally 4 3 7 Message of Network Disconnected l l byte byte Sy FLG 0x42 RES 0 disconnects normally Others disconnect abnormally 4 3 8 Command to Set Parameters 1 byte byte Alterable length FLG PB PARA _1 PARA_n es mre A is saat l l LEN byte byte 38 5
4. It must be noted that once the WLAN module enters the transparent transmission mode it cannot receive users command from the UART serial port In testing or demonstration using the simulation environment please turn off the WLAN module client software and use general purpose serial tools such as Hyper Terminal serial debugging assistant etc to do the data transmission testing 2 5 3 TCP format TCP Transmission Control Protocol is a connection oriented data transmission protocol In TCP format a virtual connection is created between the two sides of the communication TCP supports reliable data transmission and can handle out of order loss damage of data in the process of transmission When TCP format is used in Link Layer it is highly recommended that the user enables ACK when sending data through UART serial port In other words it is recommended to use Send ACK manner to further ensure the reliability of transmission The TCP data transmission model is as following J User Interface protocol l I WLAN Module K O kes ae rae a a Ee ti MAC protocol ll z Il Il gt TCP Monitoring Mode When Link layer is set to TCP format in addition to being used as a client to connect to the TCP server defined in the network parameters the WLAN module can also be used as a TCP server in the TCP monitoring mode The TCP monitoring mode can be enabled or disabled by configuring a system parameter When the data format
5. 1 In network parameter configuration parameters of subnet mask and subnet gate are added 2 The length of the wireless privacy key in network parameter is changed from 64 bytes to 54 bytes 3 Starting in Version 1 53 IDX parameter in the message ofresult is modified to denote the network signal strength 49 50 www linksprite com S LinkSprite LinkSprite Technologies Inc Add 1410 Cannon Mountain Dr Longmont CO 80503 Tel 720 204 8599 Email sales linksprite com Support support linksprite com Web www linksprite com 50 50
6. IP address has nothing to do with the IP address of the network card of the tester1 computer on which client software runs gt Subnet Mask This is the subnet mask of the network that the WLAN module connects to gt Gateway IP Address This is the gateway IP address of the network that the WLAN module connects to gt Server IP Address This is the IP address of the network card of tester2 computer gt Service Port This is the port number of the server This setting must be the same as the server port number There is only one set of system parameters They are used to control the work mode of WLAN module gt Connection Mode Users can choose auto or manual connection mode 21 50 www linksprite com S LinkSprite gt Transparent Transmission Mode This is the transmission format of the serial data This transmission mode can be set to enabled or closed It must be noted that the transparent transmission mode can only be supported when automatic connection mode is used and the server data format is UDP Otherwise this parameter can be ignored gt Serial Baud Rate It defines the data rate of the serial port It configures the serial transmission data rate of the WLAN module Please refer to the serial port setting in the server software for more information on the serial data rate setting of the client software The data rates on both sides of the communication must be same Otherwise the communication between the c
7. TX bytes 0 not conncet Remote Port not connect 18 50 www linksprite com S LinkSprite The server software runs on the computer with a WLAN connection When the computer and the WLAN module both connect to a network defined by an AP the server software can do the data transmission testing with the client software gt UDP Testing First set up a UDP server and set the Link Layer data format of WLAN module to UDP Then data communication can be established including sending and receiving text receiving document In this mode the server does not support sending document gt TCP Testing First set up a TCP server and set the Link Layer data format of WLAN module to TCP Then data communication can be established including sending and receiving text gt Online Update The server works as the online update server enables the remote firmware update for the WLAN module 3 4 Parameter Management 3 4 1 Parameter Query Edit The client software can be used to manage the parameters of the WLAN module The following example demonstrates how to modify the encryption method 19 50 www linksprite com S LinkSprite Wireless Network Param Group Privacy Type OPEN WEP WPI COMP BSSID 08 10 74 2a 6T 4a _ SSID transfer Data Type TCF a T Local IP 192 168 1 203 Mask 255 255 255 0 Gateway 192 168 1 1 Server IP 192 168 1 100 Server Port 6000 E Server MAC 0
8. bytes 128bit key In addition to the 24 random bits use needs to set the rest 104 bits or 13 bytes gt WPI In the encryption mode of WPI user needs to set 32 byte key Broadcast is achieved from AP automatically This encryption mode must be used with the AP designed by LinkSprite gt CCMP In the encryption mode of WPI user needs to set 16 byte key Broadcast is achieved from AP automatically This encryption mode must be used with the AP designed by LinkSprite 2 5 Data transmission In a connection WLAN module automatically transmits the payload data that it receives between the user s serial UART port and the wireless port According to the user setting the Data Link Layer of WLAN module can work in RAW UDP or TCP data formats 2 5 1 RAW format In the raw data format user data is not encapsulated while it is transmitted in Data Link Layer Instead it is directly packed into an 802 11 network frame and transmitted In this format WLAN module uses the servers MAC address as the target address of the transmission The RAW data transmission model is as following 11 50 www linksprite com S LinkSprite User Interface protocol User Data User Data Il MAC protocol User Data ll EE il oe Se a Aa 2 5 2 UDP format UDP User Data Protocol is a connectionless data transmission protocol in the TCP IP protocol stack UDP protocol supports unreliable data transmission and does not guarantee t
9. 0 www linksprite com S LinkSprite FLG 0x03 PB Group number of network parameter The value range is 0xb1 0xb7 representing 1st 7th group of parameters Parameter PB is an optional field It can be ignored when only setting system parameters M Parameter ID defined in the following table Para ID Parameter Meaning 0x00 Reserved 0x01 BSSID 0x02 Channel 0x03 SSID 0x04 Encryption method 0x05 Secret Key 0x06 Data format of Link Layer 0x07 Service Port 0x08 IP address of device 0x09 IP address of server Ox0a MAC address of server 0x0b Subnet Mask Ox0c IP address of gateway Ox0d Reserved Oxa0 Oxal1 Serial type Oxa2 Serial baud rate Oxa3 B G mode Oxa4 maximum speed Oxad Transmission power Oxa6 MAC address of device Oxa7 Connection mode Oxa8 the number of automatic retries after connection failure 39 50 www linksprite com S LinkSprite Oxa9 Transparent transmission mode Oxaa TCP monitor mode Reserved the parameters set by the manufacturer can only be read by user LEN Length of INFO field INFO Parameter content 4 3 9 Message of Setting Parameters l l byte byte ay FLG 0x43 RES 0 successful others failed 4 3 10 Command to Inquire Parameters l 1 byte byte Alterable length FLG 0x04 PB Group number of network parameter Its definition is same as command to set para
10. 0 15 58 e0 Td b9 System AutoConnectAP OFF TCP Server Mode OFF Serial Baudrate 115200 Transparent Mode OFF II Local BAC O0 1e e3 d8 de bb Tork Bode NORMAL 1 Click the parameter configuration button Please do not set the parameter during transmission 2 Choose parameter index 3 Check the box of encryption setting and modify the encryption method 4 Click the Save button 5 Modification is finished 3 4 2 Parameter Explanation 20 50 www linksprite com S LinkSprite Network parameters include the parameters needed to connect to AP and server This module supports 7 groups of network parameters These parameters are defined as follows gt Parameter Index This is the group number of the network parameter gt Channel SSID Encryption style Key These are all the configuration parameters please refer to the setting of AP gt BSSID This is MAC address of the target AP gt The data format of Link Layer This is the data format used by the transmission between the WLAN module and the server The setting of the client must be same as the setting of the server Note the server software in this testing system can only support UDP and TCP data formats gt Local IP address This is the IP address of the WLAN module It is arbitrarily defined by user but it must be a valid IP address of the target AP and is not used by other devices It is worth noting that this
11. 00 00 00 47 50 www linksprite com S LinkSprite 4 5 4 CRC 8 Algorithm Reference Implementation INT8U __crc8_tbl 256 0x00 0x91 0xe3 0x72 0x07 0x96 0xe4 0x75 0x0e 0x9f 0xed 0x7c 0x09 0x98 0xea 0x7b Ox1c 0x8d 0xff 0x6e 0x1b 0x8a 0xf8 0x69 0x12 0x83 0xf1 0x60 0x15 0x84 0xf6 0x67 0x38 0xa9 0xdb 0x4a 0x3f Oxae 0xdc 0x4d 0x36 0xa7 0xd5 0x44 0x31 0xa0 0xd2 0x43 0x24 0xb5 0xc7 0x56 0x23 0xb2 0xc0 0x51 0x2a 0xbb 0xc9 0x58 0x2d 0xbc 0xce Ox5f 0x70 0xe1 0x93 0x02 0x77 0xe6 0x94 0x05 0x7e 0xef 0x9d 0x0c 0x79 0xe8 0x9a 0x0b Ox6c Oxfd Ox8f 0x1e 0x6b 0xfa 0x88 0x19 0x62 0xf3 0x81 0x10 0x65 0xf4 0x86 0x17 0x48 0xd9 0xab 0x3a 0x4f Oxde 0xac 0x3d 0x46 0xd7 0xa5 0x34 0x41 0xd0 0xa2 0x33 0x54 0xc5 0xb7 0x26 0x53 0xc2 0xb0 0x21 0x5a 0xcb 0xb9 0x28 0x5d 0xcc 0xbe 0x2f 0xe0 0x71 0x03 0x92 0xe7 0x76 0x04 0x95 Oxee 0x7f 0x0d 0x9c 0xe9 0x78 0x0a 0x9b Oxfc 0x6d 0x1f 0x8e Oxfb 0x6a 0x18 0x89 Oxf2 0x63 0x11 0x80 0xf5 0x64 0x16 0x87 0xd8 0x49 0x3b 0xaa Oxdf 0x4e 0x3c 0xad Oxd6 0x47 0x35 0xa4 0xd1 0x40 0x32 0xa3 0xc4 0x55 0x27 0xb6 0xc3 0x52 0x20 0xb1 Oxca 0x5b 0x29 0xb8 0xcd 0x5c 0x2e Oxbf 0x90 0x01 0x73 0xe2 0x97 0x06 0x74 0xe5 0x9e 0x0f 0x7d 0xec 0x99 0x08 0x7a 0xeb Ox8c 0x1d 0x6f Oxfe 0x8b 0x1a 0x68 0xf9 0x82 0x13 0x61 0xf0 0x85 0x14 0x66 0xf7 0xa8 0x39 0x4b 0xda Oxaf 0x3e 0x4c 0xdd O0xa6 0x37 0x45 0xd4 0xa1 0x30 0x42 0xd3 0xb4 0x25 0x57 0xc6 0xb3 0x22 0x50 0xc1 Oxba 0x2b 0x59 0xc8 0xbd 0x2c 0x5e 0xcf oe Ch
12. a TCP server waiting for client s connection requests Baud Rate of Serial Port LAN module supports four baud rates 19200 38400 57600 115200 bps Device Physical Address It s the MAC address of WLAN module Network Parameters These are the parameters that need to be set to connect to the target network This module supports up to seven target networks and users can set seven groups of network parameters Each group of network parameter includes BSSID The BSSID of target network Its value is the MAC address of the AP used in target network Each AP owns their unique and non repeated MAC address The module uses this BSSID to identify a different network Channel It specifies the channel of the target network This module supports Channel 1 14 SSID It specifies the SSID of the target network Encryption Type It defines the encryption method used in the target network The encryption methods that this module supports include Non encrypted WEP CCMP and WPI Key It defines the key used by the target network According to different method of encryption key is in different format Data format of the Link Layer This module supports three data formats RAW UDP TCP Physical Address of the Server It defines the MAC address of the Data Center Server only used in RAW format IP Address of the Device It defines the WLAN module s own IP address only used in UDP TCP format IP Address of the Server It defines the IP addre
13. adecimal number for letter A is 0x41 B is 0x42 etc The hexadecimal number for letter a is 0x61 b is 0x62 etc The hexadecimal number for character 0 is 0x30 1 is 0x31 etc Question Why does connection failure or quick disconnection after successful connection happen when the TCP format is used TCP connection is a virtual connection If the network connection disconnects abnormally such as power off or manual reset then the connection between the WLAN module and the server cannot be cleared This causes failure in reconnection to the server The method to resolve this problem is as follow Restart the server software Set different service port Question Why can not the server receive any data 30 50 www linksprite com IS e e N LinkSprite Check if the encryption method and key setting in network parameters are consistent with the setting of AP Check if IP address of device IP address of server and service port in network parameters are set correctly Check if the firewall of the computer which the server software runs in is turned off Question What is the relationship between the IP address of the network card of the computer which the client software runs in and the device IP address defined in the configuration parameters of the WLAN module The WLAN module itself has the cr gd of network connection It does not use the network connection of Windows system in the com
14. automaticly then connects to the AP and Operational Data Sel File Sand File in POS mechines is uploaded to Data Center Server in Bus Terminus through AP L Clear Status Bss info TX bytes 0 Ssid aq3_lin Channel 3 Bssid 08 10 T4 2a 6T 4a RX bytes 6 E WLANETEST ServerV 1 32EN EIER Receive window RY bytes 401 tem based on the WLAN technic car or handheld achine alway oes the indentification automaticly then connect e AP and Operational Data in POS mechines is uploaded to Data Ce Status Transmit window Remote IP TX bytes 0 Sel File Send File Send TT gt 192 168 1 203 Hello Remote Port 10064 27 50 www linksprite com S LinkSprite 3 9 Document Transmission Test The client and server software also support the document transmission As an example the process that the client sends a document to the server is shown below Serial Configure Output Cmd Msg Serial data Ri Sending File Send completely total 805162 bytes s200 8 ByteSize No Parity 1 Stopbit Close V ACK Clear Control Join Leave TCP Reset Parameters Transmition Input repeat per 100 ms E beijing 4TT9 txt Stop Send WET eta Clear Status Bss info TX bytes 813400 Ssid ag3 lin Channel 3 Bssid 08 10 T4 2a 6T 4a Ri bytes 0 28 50 www lin
15. ct when disconnected o In manual mode user can control to connect or disconnect flexibly Support RAW UDP TCP format of network data transmission Support 7 groups of basic parameter settings can connect up to seven target networks Support parameter configuration through the user interface Support online firmware upgrade Support external antenna UFL interface Maximum transmission power is 100mW and receiving sensitivity is 90dBm Typical Applications Wireless POS Machine In a Wireless Bus System using WLAN techniques terminals can be car held or hand held When buses reach the terminal wireless POS machine detects the identification automatically and then connects to the AP Operational Data in POS machine is uploaded to the Data Center Server in Bus terminal through AP 4 50 www linksprite com X LinkSprite wireless POS Machine R Data Certer server WLAN Wodule Inside 1 2 2 Wireless Monitoring and Control System Terminal 1 a Terminal 2 N A Terminal 3 gt Konitor and control A D Center Server Terminal n FLAN Module inside Serial device networking through TCP IP has been popular for industrial networking However with wired communication deployment of new wires and the following construction often become a bottleneck In contrast WLAN can be embedded in the monitoring and control terminals therefore reduces the wire deployment and construction cost Furthermore it can be easil
16. d Scan network Info ID Channel BSSID Pi 00 Oa 79 cl e6 70 S g 06 0a 00 00 00 30 3 4 5 6 T 00 24 01 38 91 a3 06 0a 00 00 00 06 08 10 T4 2a 6T 4a 02 1e e3 96 4a 10 00 23 ed S1 al 4e 00 1 a 70 35 b9 30 00 1 a 70 35 b9 31 00 1b 2 56 d Se 01 02 03 10 10 i SSID OOOATSC1E431 hedwmm dlink HED_APOwhz ag3 lin mm ag3 linux linksys_zhmhl linksys_zhmh2 33 wapi_ly n Reset Parameters Transmition repeat per 100 ms Send TXT Sel File Send File Clear Status Bss info TX bytes Not connect RY bytes 1 click Scan button 2 return the scan result 3 7 TCP Monitor Mode Test 1 Accurately set the network parameters and enable TCP monitor mode 2 WLAN module gets in monitor status after a successful connection 3 Use the Internet Explorer in tester 2 and connect to the WLAN module Fill in IP address and port number with the their actual values 4 After receiving a request the WLAN module sets up a TCP connection with the Internet Explorer A message of successful TCP connection and the requested HTTP data sent from the Internet Explorer are shown in the client software 25 50 www linksprite com X LinkSprite 5 Type in random character string in the input window of the client software click TXT send then click the TCP connection button and choose disconnect to disconnect the TCP connection as shown below 6 In the In
17. ed as follows 4 4 1 System parameters gt Baud rate Its length is 1 byte It defines the baud rate of the UART serial port in bps 0 19200 1 38400 2 57600 3 115200 gt Auto Connect Its length is 1 byte It defines the connection mode of the WLAN module 0 manual 1 automatic gt Transparent Its length is 1 byte It defines the transparent transmission mode 0 close 1 enable this mode is only valid in automatic connection mode and UDP data format gt TCP Server Mode Its length is 1 byte It defines the TCP monitor mode 0 close 1 enable this mode is only valid in TCP data format 4 4 2 Network parameters This module supports up to 7 groups of network parameters so there are 7 network parameter configurations whose indexes are 1 7 Each group of parameters includes gt BSSID Its length is 6 bytes It defines BSSID of the target network Its value is the MAC address of the AP used by the target network gt Channel Its length is 1 byte It defines the channel of the target network its valid value range is 1 14 43 50 www linksprite com IS e e N LinkSprite gt SSID Its length is variable but not longer than 32 bytes It defines SSID of the target network gt Privacy Type HEF length is 1 byte It defines the encryption method of WLAN module Its definition is as ollowing Value Description 0 Not encrypted 1 WEP 2 WPI 3 CCMP ae Reserved
18. ee Re ee ee ke eke 43 4 5 2 The Example of Parameters Setting eise eek ee ee ee ee ee ee ee Re ee RA 45 4 5 3 The example of sending data sees ee Re Re RA AA Re ee ee ee 45 4 5 4 CRC 8 Algorithm Reference ImplementatiON esse ee ee AA ee 46 4 6 Serial Protocol Modification NoteS ee see ee RA Re Re ee Re ee Re ee Re ee ee ee 47 3 50 www linksprite com S LinkSprite 1 Overview 1 1 1 2 1 2 1 LS UART WiFi is a WLAN Module with UART serial interface by LinkSprite www linksprite com Main Functions Summary SOC chip based solution cost effective high quality and stable built in WiFi protocol stack and serial transfer protocol Simple interface 5V ground RX TX four wire connection Small dimension 22 60 7 mm Simple and efficient serial user interface easy for development Can be easily driven by 8 16 32 bit microcontroller such as MSC51 PIC ARM7 Simple programming Specifications Support UART data interface baud rate 19 2k 38 4k 57 6k 115 2k bps Support 802 11b wireless data rate up to 11Mbps Support Integrated 802 11 MAC protocol functions Support STA applications in basic networks Support OPEN WEP authentication method Support shared key encryption method wep64 wep128 data transmission Support automatic networking mode and manual networking mode o Inthe automatic mode the module can automatically scan the target network and can automatically reconne
19. he integrity of the data But UDP uses little network source and processes data fast Therefore it is suitable for applications that require real time but low integrity data transmission such as audio and video data transmission UDP format is also good for data broadcasting When Data Link Layer of the WLAN module uses UDP format the information including device IP address server IP address and service port number must be set accurately If server and WLAN module are not in the same subnet subnet mask and gateway must be set Otherwise they cannot communicate with each other the setting of IP address and port number must follow the TCP IP potocol The UDP data transmission model is as following 12 50 www linksprite com X LinkSprite User Interface protocol User Data User Data k IUser Host k7 WLAN Module pa ve _ MT gt Transparent Transmission Mode In UDP format WLAN module also supports transparent transmission mode Transparent transmission means that the WLAN module transmits transparently the data it receives from the serial user port to the network The data transmission model is as following EE SD TI The module must meet all the following conditions before it can work in the transparent transmission mode 1 Automatic networking mode is used 13 50 www linksprite com S LinkSprite 2 UDP Link Layer data format is used 3 WLAN module is in successful connection status
20. ition and transmission mechanism of control data between a user terminal and a WALN module is defined in the User Serial Control protocol User Data This is the user s private data Its protocol is defined by user 4 2 UART serial protocol 4 2 1 Data Format j byte byte byte byte LENGTH byte www linksprite com S LinkSprite SYN Synchronized Field it indicates the start of a data frame the fixed value is OxAA CTL Control Field its meaning is as follow Bit Bit 4 Bit3 0 A a ie WO n N A TYPE SN TYPE Frame type 000b indicates control data 001b indicates common data 010b indicates the ACK acknowledgement to the previous frame LENGTH field must be 0 Others are reserved A This bit in data frame must be set to 1 It indicates that the data frame includes CRC and the receiver needs to return ACK acknowledgement It is not used in an ACK frame SN SN stands for sequence number The range of its value is 0 15 In data frame if it is the retry of the previous frame then the sequence number remain unchanged Otherwise the sequence number increments 1 every time In ACK acknowledgement frame SN is equal to the sequence number of the previous frame it receives LENGTH LENGTH field it defines the length of DATA field The maximum value is 140 bytes CHK Frame Head Verification field It is sum of the CRC of the CTL field and the LENGTH field DATA Actual transmis
21. kCrc8 INT8U ptr INT32U len INT8U crc8 data crc8 0 while len 0 data ptr crc8 __crc8_tbl crc8data crc8 0x00 return 0 else return 1 48 50 www linksprite com S LinkSprite INT8U GetCrc8 INT8U ptr INT32U len INT8U crc8 data crc8 0 while len 0 data ptr crc8 __crc8_tbl crc8data return crc8 4 6 Serial Protocol Modification Notes gt Version 1 3 modification from Version 1 0 1 The largest value of LENGTH field in data format definition of UART serial protocol is modified to 1400 2 In data format definition of user serial protocol a TCP failed sending message is added 3 The definition of the parameter IDX in the start connection command is modified to the index number of network parameter group 4 In parameter setting command parameter inquiry command parameter inquiry message of user serial protocol a new PB field is added 5 M field of Parameter ID in parameter setting command parameter inquiry command parameter inquiry message of user serial protocol is redefined 6 In the initialization completion message of user serial protocol new fields of TYP V and INFO are added gt Version 1 4 modifications from Version 1 3 1 In RE format definition of user serial protocol TCP connection command status message are added 2 In system parameter setting a parameter of TcpServerMode is added gt Version 1 5 modifications from Version 1 4
22. ksprite com X LinkSprite fq WLANETEST Server 1 32EH Server Receive window TCP RX bytes 813400 Port 6000 File Receive completel Status Transmit window Remote IP TX bytes 0 Sel File Send File Send TXT 192 168 1 203 E EE Remote Port 10036 It is noted that when WLAN module uses UDP data format document transmission is only supported from the client to the server Due to uncertainty document transmission may be incomplete To ensure the transmission reliably TCP format is suggested 3 10 FAQ Question Why does the message of Notice Module disconnected appear when a user command is sent in the client software Check if the serial port setting of the client software is accurate Check if the WLAN module is powered on Check if the WLAN module is in working in transparent transmission mode Question Why does a connection fail There are a variety of causes for a connection failure 1 The target network is not available m Check if the power of AP is on and the configuration is correct 29 50 www linksprite com IS e e N LinkSprite Mm Scan network manually be sure the target network can be found m Check if the wireless mode of AP is set to B mode or B G mixed mode 2 Network configuration parameters of the AP is not correct m Check the configuration of WLAN module ensure channel BSSID SSID and encryption setting is the same as the setting of AP 3 If Li
23. lient software and module becomes impossible 3 5 Automatic Connection Serial Configure Output COM Cmd Msg Serial data 115200 md Join to default 3 Info Join successfully 8 ByteSize Info Leave Bss No Parity ere 1 Stopbit V ACK Control Scan Leave Reset Parameters Transmition repeat per 100 ms Send TXT Send File Status Bss info TX bytes 0 Not connect RX bytes O 22 50 www linksprite com X LinkSprite In automatic mode all process of connection is automatically completed by the WLAN module without user s intervention User only needs to set at least one group of network parameters before first use Then the WLAN module will automatically scan network after power on reset If it finds a target network it automatically connects and sends out an confirmation message of a successful connection as shown here 3 6 Manual Connection Manual connection mode supports a more flexible method for user to use User can use command to control the module to scan connect and transmit data etc With the client software user can send the following commands to the WLAN module gt Connect to a Network Serial Configure Output COM Cmd Mse Serial data 115200 Cmd Join to bss N ON Info Join successfully 8 ByteSize No Parity 1 Stopbit V ACK Control Scan oe Please select which group of paramte
24. meters M Parameter ID Its definition is same as command to set parameters 4 3 11 Message of Inquiring Parameters 40 50 www linksprite com S LinkSprite l 1 byte byte Alterable length MEE S N art l 1 LEN byte byte FLG 0x44 PB Group number of network parameter M Parameter ID Its definition is same as setting parameter LEN Length of INFO field INFO Parameter content 4 3 12 Reset Order l l byte byte FLG 0x05 RES Not defined 4 3 13 Message of Finished Initialization l l l Alterable length byte byte byte FLG 0x45 41 50 www linksprite com S LinkSprite TYP Reset type 0O hardware reset 1 software reset others not defined V Version value fixed to 0x76 INFO Character strings of firmware version 4 3 14 Command to connect a TCP connection l l byte byte FLG 0x06 RES 0 Set up a connection 1 Disconnect a connection Other reserved 4 3 15 Message of TCP connection Status l l byte byte an FLG 0x46 RES 0 connection is successful 1 connection has been disconnected 2 connection is busy 3 does not join the network 4 invalid value others reserved 4 3 16 Message of Failed TCP Sending 42 50 www linksprite com S LinkSprite l l byte byte im FLG 0x47 RES No defined 4 4 Configuration parameters WLAN module s configuration parameters are defin
25. nk Layer data format is TCP incorrect network parameters related to service can also cause connection failure m Check that MAC address of server IP address of device IP address of server and service port setting are valid and correct Please note MAC address of server refers to the at ln address of the network card in the computer which the server software runs IP address of server refers to the IP address of the computer which the server software runs in Service port refers to the service port set in server software IP address of device refers to the IP address set for WLAN module It must be in the same sub network as the server Question Why is my secret key always being incorrect The representation of the key in client software of this system may be different from that of your AP If so format conversion is needed Here is an example of the format conversion for a 64 bit WEP key lf the key of AP uses hexadecimal format Suppose the key of AP is 10 hexadecimal numbers 1234567890 Then after conversion the key Is represented as 5 hexadecimal numbers 0x12 0x34 0x56 0x78 0x90 lf the key of AP uses ASCII format Suppose the key of AP is 5 ASCII letters abcde Then after conversion the key is represented as 5 hexadecimal numbers 0x61 0x62 0x63 0x64 0x65 Please refer to the normal ACSII character set for the hexadecimal representation of ASCII characters Common letters and numbers are represented as follows The hex
26. nvironments consist of the following devices gt Tester 1 It is used to run the client software of WLAN module and communicates with WLAN module through the computer serial port The functions include 1 Send command to control the WLAN module 2 Receive and analyze the message sent by the WLAN module 3 Set or inquire the configuration parameters of WLAN module 4 Work with server software to run data transmission testing gt WLAN module It consists of the STAU network card that supports UART serial port The functions include 1 Wireless connection 2 Data transmission between serial port and wireless network gt AP It s used to build a wireless network gt Tester 2 16 50 www linksprite com S LinkSprite It is used to run the server software of WLAN module This computer must have network connection The functions include 1 conduct the data transmission testing with client software 2 Use as server for online update of the WLAN module firmware 3 2 Client Software Serial Configure Output COMI Cmd Msg Serial data 115200 Cmd Sean network koatos Module ete Info Module x Faiet Ora VER 1 51 rel produced at 08 36 32 Apr 30 2009 Cmd Scan DENNO 5 Notice Mod isconnec Cmd Scan network Notice Mo ledenn Cmd Scan ries nS Control Notice Module disconnecte Cmd Scan network Notice Module disc cma Scan network Notice Module disc Leave cma Sean network
27. of Link Layer is not TCP this parameter can be neglected According to the status of TCP monitoring mode the connection procedure of WLAN module is different 14 50 www linksprite com S LinkSprite gt Disable TCP Monitoring After associating with the AP the WLAN module automatically connects to the server defined in the network parameters and returns the message of successful connection to user If the connection fails it returns a failure message The procedure of the WLAN module is the same as that in Version 1 3 and older versions which do not support the TCP Monitoring mode gt Enable TCP Monitoring After connecting with the AP the WLAN module returns the message of successful connection to user Then WLAN module enters TCP Monitoring mode and can accept external TCP connection requests If user wishes it works as the client to connect to the server the server can use TCP connection command to initiate the connection request This module does not support multiple TCP connections at the same time If currently a TCP connection is in place it can no longer receive or send new connection requests 15 50 www linksprite com X LinkSprite 3 Testing Guide WLAN cannot work properly until it is embedded in a system We support the following simulation environment for users to do the functional testing of the module 3 1 Summary Run the server software PC Interface Tester 1 Tester 2 All the testing e
28. ork eie ee ee ee ee Re ee RA 35 4 3 5 Message of Network Connected i ese ee ee ee AA RA RA ee Re ee 35 4 3 6 Order of Starting to Disconnect NetWOFK ese ee ee ee ee ee RA RA RA ee 36 4 3 7 Message of Network Disconnected iss ee ee RR ee ke 36 4 3 8 Setting Parameter Order i ee ee ee ee ee ke ee Re ee Re RR ee ee 36 4 3 9 Message of Setting Parameter Result iss ee ee ee Re ee Re ee ee ee 38 4 3 10 Inquiring Parameter Order iii ee ke ee ee RA RA Re ee ee ee ee ee ee ee 38 4 3 11 Message of Inquiring Result sees see Re ee dd ke ee 38 2 50 www linksprite com S LinkSprite 4 3 12 Reset Orde ese sone a a EE Ene ER di ANANE EE denen Ee ENE Es ER ee 39 4 3 13 Message of Finished Initialization ee see RA ee Re RA 39 4 3 14 TCP Connection order ee ee ee Re RA ee RA ee RR eke ee 40 4 3 15 Message of TCP connection Status iese ee ee ee RA RR ee ee ee 40 4 3 16 Message of TCP Failed Sending iese ee ee ee Re Re Re ee Re ee 40 4 4 Configuration parameterS sesse ee ee ee ee Re ek ee ee ee ee Re ee RA ee ek ke ee Re ee ee ee 41 4 4 1 System parameters ee ee RA RR ee ee ee ee ee ee ee ee ee ee ee ee ee 41 4 4 2 Network parameters ii sees ee ee Re ee ee ee ee ee ee ee ee ee ee ee ee ee 41 4 5 Programming Guide iissa narendana Ke Ge ES EERS Nee dk es ee ES EERS RR anaana 43 4 5 1 The Example of Network Control see ese ee ee Re Re
29. others are ignored For example SubnetMask 1 SubnetGate 0 192 SubnetGate 1 168 SubnetGate 2 1 SubnetGate 3 1 Then only SubnetGate 3 is in use others are ignored gt SerlpAddr Its length is 4 bytes It defines the IP address of data center server The format is same as StalpAddr gt SerMacAddr Its length is 6 bytes It defines the MAC address of data center server only used in RAW format 4 5 Programming Guide 4 5 1 Examples of Network Control gt Example 1 Scan the network whose channel numbers are 1 5 6 11 Create the following command where the highlighted blue part is to scan 00 the specified channels 31 channels 1 5 6 04 channel 11 00 31 04 The returned message 45 50 www linksprite com S LinkSprite aa Ob O1 IDX Channel 1 1 2 1 3 1 4 1 5 6 6 5 T 5 8 5 9 6 10 6 di 6 12 11 13 11 14 11 15 11 40 01 0 OO id 3 01 00 01 BSSID O00 1d 60 95 3d e0 00 1d Of 85 8f 74 00 O0b c0 03 06 2a 60 11 22 33 44 02 00 21 27 2a ca d4 00 1a 70 35 b9 30 00 1a 70 35 b9 31 O00 1a 70 35 b9 32 O00 1f 33 he 2a c2 DO DOT 3d 28 9e ff DO0 14 di c3 S5c bd 00 1e 58 a3 01 a2 00 1ib 2f 56 df Se 00 1b 2f 56 O0d 50 08 10 74 0a df 46 asus wep40bss ap wapi HED 123 megs stauart wrv_open stauart Wrv wep stauart wry wepiz8 NETGEAR 2 4 G MCGS hanjp abj 12345 NETGEAR whz2 gt Example 2 Connect to the target network defined in the first group of pa
30. puter which the client software runs in So the IP address of the network card has nothing to do with the WLAN module In the demo system the tow sides of the communication are P of the WLAN module device P of the network card in the server computer Question when UDP format is used why does the server software show a non connection status while the client has returned a successful connection message UDP is a connectionless protocol The server software does not know the address of the sender unless it has received some data in its monitor port Therefore the client as the communication od eier must send some data to the server There is no such problem when the TCP format is used Question Why is the network delay when a WLAN module is used bigger than normal Check if the wireless network mode of AP is set to B mode or B G mixed mode Question How is the transparent transmission mode terminated Turn off the power of AP reset the WLAN module or use the client software to modify the configuration parameters 31 50 www linksprite com S LinkSprite 4 Serial Protocol 4 1 Summary UART a interface data control data user data Interface Data The format and transmission mechanism of the data transmitted between a user terminal and a WALN module through UART serial is defined in the corresponding serial protocol Serial data may include control data and user data Control Data The defin
31. rameters Create the following command where the highlighted blue part is to connect 01 to first group of parameters 01 The returned message of successful connection is aa Oc OO ic 92 EENDE E Ti 6L TS oak fe Ae ke TR The explanation content is Connect successfully 46 50 www linksprite com NS N e N LinkSprite Channel 5 BSSID 00 1a 70 35 b9 32 SSID stauart_wrv_wep128 4 5 2 Example of Parameters Setting gt Example 1 Set the first group of network parameters as following BSSID 00 1a 70 35 b9 32 Channel 5 SSID stauart_wrv_wep128 Encryption type WEP Privacy key 128 bits choose the second group of privacy keys the keys are 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 Create the following command look at the highlighted blue part 4 5 3 Example of sending data gt Example 1 Send the following data to WLAN module with send response mode This is a test text with ack Create the following data frame according to the request aa 9d 00 le fd 54 68 69 73 20 69 73 20 61 20 74 65 73 74 20 74 65 76 74 20 77 69 74 66 20 61 63 6b 2e 6e 00 00 00 00 00 00 gt Example 2 Send the following data to WLAN module with continuous sending This is a test text without ack Create the following data frame according to the request aa ic 00 20 35 54 68 69 73 20 69 73 20 61 20 74 65 73 74 20 74 65 78 74 20 77 69 74 68 6f 75 74 20 61 63 6b Ze 00 00 00
32. receiver must execute the command it receives In this system command can only be originated by a host computer MESSAGE It defines the message that the sender wants to send to the receiver The sender does not need ACK from the receiver The definition of data format is as following alterable length A af Wes FLG PARAMETERS SUBTYPE Bit 6 Bits 0 TYPE 00 Command from host to WLAN module 01 Message from WLAN module to host 10 Reserved 11 Reserved SUBTYPE 000000b Scan network 000001b Connect to the network 000010b Disconnect to the network 000011b Set parameters 35 50 www linksprite com S LinkSprite 000100b Inquire the parameters 000101b Reset initialization 000110b TCP connection 000111b TCP failed transmission Others Reserved PARAMETERS They are defined differently according to the TYPE and SUBTYPE 4 3 2 Command to Scan Network l 2 byte byte An PORTMASK FLG 0x00 PORTMASK Channel mask The first byte represents channels 1 8 BitO represents Channel 1 Bit represents Channel 2 etc The lower 6 bits of the second byte represent channels 9 14 4 3 3 Message of Scanning Network Result alterable length od ae l l 6 l LEN byte byte byte byte FLG 0x40 IDX In 1 51 or older versions it defines the network number and is used to return the index number of scanned networks This number begins from 1 and increments 1 for each network
33. rs is to be used j 0 is default l Reset hag x Transmition OK L Cancel repeat per 100 ms Stop Send DT l Sel File Send File Ese Status Bss info TX bytes Ssid ag3 lin Channel 3 Bssid 08 10 T4 2a 67T 4a RX bytes 23 50 www linksprite com S LinkSprite 1 Click the Join button 2 Choose the group number of the network parameters then click OK 3 Connect successfully gt Disconnect the connection Serial Configure Output com 115200 8 ByteSize No Parity 1 Stopbit V ACK Control TCP Reset Parameters 1 Transmition MI repeat per 100 ms Stop Send TAT Sel File Send File Clear Status Bss info Not connect 1 Click Leave button 2 Disconnect successfully gt Scan the network Cmd Msg Serial data Cmd Join to bss 1 Info Join successfully Info Leave Bss Cmd Leave bss Info Leave Bss Cmd Leave bss Info Leave Bss Cmd Join to default Info Leave Bss Cmd Join to default Info Join successfully Leave bss Info Leave Bss 24 50 TX bytes RX bytes 0 0 www linksprite com S LinkSprite Serial Configure Comi 115200 8 ByteSize No Parity 1 Stopbit V ACK Control Sean Leave Output Cmd Msg Serial data Cm
34. s ee ee Ee AA Re ee AAR ee AA AR Ee Re AA Re ee AA ee Re ee ee 17 3 4 2 Parameter Explanation iese ees ee ee ee Re ee de ee Re ee ee ee de ee ee ee ee ke ee ee 18 3 5 Automatic netwOrKiNg ee ek ee RA RR ee Re ee ee ee RA ee ee ee ee ee ee ee ee ee ee ee 20 3 6 Manual networking ii see ee RR ee ee RA Re ed ee ee ge ee ee Re ee ee ee Re ee ee 21 3 7 TCP Monitor Mode Test see es ee ee Re RA RA dian e ee RA Re ee Re ee Re ee ee ee ee ee ee 23 3 8 Text Tamsten SE EE EE RE ines 24 3 9 Document Trabster TeSt is EE ESSEN KS RE SEGE KEY ER EKE KERE ESE EE ESE GR KERE DRR pe SR Re ENEE 26 3 10 The Answers of Familiar QUESTIONS ie ee ee RA RA RA RA Re ee Re ee Re ee 27 4 SERIAL dere ee ERA EE EE OE EE eiaa EEO 30 4 RS ER EE OE EE EE AR OR OE 30 4 2 UART Serial Protocol AE eisau aaa oenn aiaa aa ane aaa aaea PNE a eaS a kan 30 4 21 Data eli AA OE N RE EE RE GEE 30 4 2 2 Transfer MechaniSM ese see ee AA ee AA ee RR AA Ee ee ee ee ee ee 31 4 2 3 Serial ConfiguratiON sees eek ee Re ee Re RA AR Re ek ee ee ee Re ee ee ee naka 32 4 3 User Serial Control Protocol ee ee RR Re RA Re ee Re ee ee ee ee ee Re ee ee 33 4 3 1 Data Format iese ee ee ee ee Re ee ee ee ee ee ee Re ee ee ee ee ee ee ee ke 33 4 3 2 Order of Starting to Scan NetWOrK ee ee ee ee ee Re RA Re ee Re ee Re ee 34 4 3 3 Message of Scanning Network Result see ee ee ee ee Re Re Re ee 34 4 3 4 Order of Starting to Connect to Netw
35. sion data If A is set to 1 the last byte of DATA is the 8 bit CRC sum of early LENGTH 1 byte data PADDING Fill field at frame end Its value is 6 continuous 0x00 4 2 2 Transmission Mechanism Two different transmission modes can be used for two types of the frames 33 50 www linksprite com IS e e N LinkSprite gt Send response Mode The data frame whose A is set to 1 uses this transmission mode The sender needs to wait for ACK from the receiver after the sender has sent a frame of data Then it starts to send the next frame as following Ea Woy DATA A 1 SN n AC a vEENE n Berra 1 SN ntl EES E Ki gt Continuous sending mode The data frame whose A is set to 0 uses this transmission mode The sender can continuously send frame after it has sent a frame of data It does not need to wait for the ACK form the receiver sender receiver l I DATA A 0 SN n DATA A 0 SN n 1 4 2 3 Serial Configuration The following is the configuration of the UART serial port Data rate 19200 38400 57600 115200 bps Data bit 8bits Parity bit none Stop bit 1bits 34 50 www linksprite com S LinkSprite flow control none 4 3 User Serial Control Protocol 4 3 1 Data Format This proren is used to define the format of the control data transmitted through UART user serial port Control data includes the following two types COMMAND and MESSAGE COMMAND The
36. ss of the Data Center Server only used in UDP TCP format Service Port It defines the server port number only used in UDP TCP format 8 50 www linksprite com S LinkSprite 23 Connection Mode WLAN module supports two connection modes automatic mode and manual mode for users to choose from It needs to be noted that in the 1 3 and older versions when the WLAN module is set to TCP Link Layer format the process of connection automatically includes the process of connection with the TCP server 2 3 1 Automatic Connection In automatic connection mode without any user intervention WLAN module automatically scans and connects to the network after the power on reset If one of the following situations occurs WLAN module will automatically re connect 1 Connection fails 2 connection is disconnected 3 The target network is rescanned 4 Server disconnects the TCP connection when TCP Data format is used If one of the following situations occurs WLAN module will automatically scan 1 The AP of the target network is off 2 WLAN module leaves the signal coverage area of the AP Its work procedure is as follows 9 50 www linksprite com S LinkSprite Scan network Compare the scan result with the set parameters Connect to the network Network disconnects Network has connected In the automatic mode all connection process is automatically completed by WAN module without any user inter
37. ternet Explorer window the character string that was typed in the client software is shown Wireless Network Param Group Channel BSSID SSID lt filataType T gt Local IP Mask Gateway Server IP _ Privacy OPEN WEP WPI Type COMP 08 10 74 2a 6T 4a alin 192 168 1 203 255 255 255 0 192 168 1 1 192 168 1 100 Bj Server MAC System AutoConnectAP _ Serial Baudrate WM Local BAC Fork Mode 00 15 58 e0 Td b3 OFF v CP Server Mode n z Save 115200 X Transparent Mode OFF DO 1e e dB de bb NORMAL 3 8 Text Transmission Test After WLAN module successfully connects to a network the client and server software can be used to test the text transmission 26 50 www linksprite com X LinkSprite Serial Configure com AE 115200 ema Leave bss 3 Info Leave Bss 8 ByteSize Text No Parity Hello 1 Stopbit Cmd Join to default y Info Leave Bss V ACK Cmd Leave bss Info Leave Bss Cmd Join to bss 1 Control Info Join successfully Leave u Reset Transmition Input En a Wireless Bus System based on the WLAN technic carheld or handheld POS ER machine in each bus equips with a WLAN module based on VART serial and AP is fixed Stop in the Bus Terminus When bus reachs in the terminus wireless POS machine always does the indentification
38. vention This makes it very easy to use for users To successfully connect the network users only need to set at least one group of basic parameters in the first use Then WLAN module will automatically scan the network after each power on reset If the target network is detected connection will be connected automatically and user will receive a confirmation message after successful connection After that user can send data normally If the connection is disconnected accidentally in the process the module can do automatic reconnection In the case that the AP in the network is off or WLAN module leaves the signal coverage area of the network WLAN module starts automatic scan until an available net work is found This module supports at most seven target networks at the same time When there are more than one target networks in the area WLAN module may connect automatically to the first available network 2 3 2 Manual Connection 10 50 www linksprite com S LinkSprite In the manual connection mode users need to control connection and disconnection of WLAN module through user command 24 Encryption WLAN module supports three encryption modes WEP WPI and CCMP and the non encrypted OPEN mode gt WEP In the WEP encryption mode user can set 4 sets of key and choose one set as default key The length of the key can be 64 bit or 128 bit 64 bit key In addition to the 24 random bits user needs to set the rest 40 bits or 5
39. www linksprite com S LinkSprite LS UART WiFi Module User Manual May 2010 1 50 www linksprite com S LinkSprite TABLE OF CONTENTS THOVERVIEW nanana aaaea aE A AEO EA aaa EE a A AnA Aa AEE EAEE a Ora iene need 4 Tal MaM FUNCION RR OR N EE EE oana EE aiiin 4 REM EE OE OE ER ER OE 4 121 2 esels si OO ER RE ER Er EO 4 1 2 Typical Too le ie EE EE RR E 4 1 2 1 Wireless POS Machine sees see ee ee ee Re ek ee ee Re ee ee ee ee ee ee ee ee Re eek 5 1 2 2 Wirelsee Monitoring and Control SysteM sees ee eke RA ee ee ee ee ee Re ee ee 5 2 FUNCITON DESCRIPTION EE EO RO EE RE HE Ne 6 21 Block ABIE ER NE OE EE EE EE 6 2 2 Parameter management seed ee de ee ee ee ee ee ee ee ee Ad ee ee ke ee ee ee ee ee ee 6 2 9 Connection Model use EE RE ENE si Eer GERED aara aianei EEN se gee Ge EK ek se Feeds 7 2 3 1 Automatic Connectoren RA RR Re ee Re ee Re ee Re ee Re RA ee ee 7 2 9 2 Manual Connection AA EE Oe 9 Ne RE EE OR EO OE RA ER EE 9 2 5 PEER N EE pa EE SANE EEEE 9 2 54 RAW eli SE AE RR OE OE EP 10 2 5 2 UDP TOMMAl ER RE ER EE RE RE 10 2 53 EPOS AE RE EE ee RE EG Di EE Ee ee Ge yr 13 3 TESNNG GUIDE sorso N N RE OR OE OE NG 14 RE STEL SAREL N OE EE EE 14 ROET EE EE Ena Ena 15 3 3 Server SOfWar ees eek ee RA Re ee Re ee Re ee ee Re AR ee RA RA RA RA rnea ee ee ee 16 3 4 Parameter management sees esse ee ee AA Ge AA ee ee ee AA ee ee ee edidi Re ee aa 17 3 4 1 Parameter guery edit see
40. y modified to meet the requirements of the Industrial Environment and Factory Automation Systems and on site monitoring system etc 5 50 www linksprite com N LinkSprite 2 Function Descriptions 2 1 Block Diagram Information and call gt Control Data Flow gt Protocol Data Flow _ gt Common Data Flow _ gt Hixed Data Flow 6 50 www linksprite com S LinkSprite RX DATA into module TX DATA out from module Ng 3 K UIA Ul ooo gt Ja ar 2 cz a Ia Cas VI TOT MAC 001FA4A708BB 7 50 www linksprite com S LinkSprite 22 Parameter management WLAN module provides for user parameters reconfiguration These parameters are used to control the module operation Parameters are divided into two types system parameters and network parameters gt System Parameters mee parameters are used to control the working mode of the module it include gt Networking Mode WLAN module supports two modes automatic networking and manual networking Transparent Transmission Mode WLAN module supports transparent transmission mode in the serial port It is worth noting that this mode is valid only when the module is in automatic networking mode AND it uses the UDP protocol in Link Layer TCP Monitoring Mode WLAN module supports the use of TCP listening mode when TCP protocol is used in Link Layer After this mode is selected the WLAN module can be used as
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