Sollae Systems CSW-M85 User manual

Sollae Systems Co., Ltd.
http://www.sollae.co.kr
Serial to Wi-Fi module
CSW-M85 User’s Manual
Version 1.6

CSW-M85 User’s Manual Ver. 1.6
Sollae Systems Co., Ltd.
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http://www.sollae.co.kr
To all residents of the European Union
Important environmental information about this product
This symbol on this unit or the package indicates that disposal of this unit after
its lifecycle could harm the environment. Do not dispose of the unit as unsorted
municipal waste; it should be brought to a specialized company for recycling. It is your
responsibility to return this unit to your local recycling service. Respect your local
environmental regulation. If in doubt, contact your local waste disposal authorities

CSW-M85 User’s Manual Ver. 1.6
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Contents
1Overview ..................................................................................................................................- 5 -
1.1 Overview ................................................................................................................................................................- 5 -
1.2 Features ..................................................................................................................................................................- 5 -
1.3 Application Examples.......................................................................................................................................- 5 -
1.4 Components.........................................................................................................................................................- 6 -
1.5 Specification .........................................................................................................................................................- 7 -
1.5.1 Hardware ......................................................................................................................................................- 7 -
1.5.2 Software ........................................................................................................................................................- 7 -
1.5.3 Dimension ....................................................................................................................................................- 8 -
1.5.4 Pin assignment ..........................................................................................................................................- 9 -
1.5.5 Voltage Parameters............................................................................................................................... - 10 -
1.5.6 Application Circuit................................................................................................................................. - 10 -
1.6 Evaluation Board.............................................................................................................................................. - 11 -
1.6.1 Components............................................................................................................................................. - 11 -
2Installation and Test............................................................................................................ - 13 -
2.1 Background knowledge ............................................................................................................................... - 13 -
2.1.1 Topology .................................................................................................................................................... - 13 -
2.1.2 Key terms................................................................................................................................................... - 14 -
2.1.3 Authentication and Security............................................................................................................. - 15 -
2.2 Installation.......................................................................................................................................................... - 16 -
2.2.1 Making Wireless LAN link ................................................................................................................. - 16 -
2.2.2 Setting Network Area .......................................................................................................................... - 17 -
2.3 Simple Test......................................................................................................................................................... - 20 -
3Configuration ....................................................................................................................... - 23 -
3.1 Configuration with ezManager................................................................................................................. - 23 -
3.1.1 Configuration via WLAN .................................................................................................................... - 23 -
3.1.2 Configuration via Serial ...................................................................................................................... - 24 -
3.2 AT command..................................................................................................................................................... - 25 -
3.3 Assigning an IP address automatically ................................................................................................. - 26 -
3.3.1 Obtain an IP automatically (DHCP)............................................................................................... - 26 -
3.3.2 Obtain an IP automatically (PPPoE) .............................................................................................. - 27 -
3.3.3 Notify IP Change ................................................................................................................................... - 28 -
4Operation Modes ................................................................................................................ - 29 -

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4.1 What is the Operation Mode?.................................................................................................................. - 29 -
4.2 Changing modes............................................................................................................................................. - 29 -
4.3 Comparison with each mode.................................................................................................................... - 30 -
4.4 Normal Mode ................................................................................................................................................... - 30 -
4.5 Serial Configuration Mode ......................................................................................................................... - 31 -
4.5.1 Configuring arameters ........................................................................................................................ - 31 -
4.5.2 Revoking Serurity Options................................................................................................................. - 31 -
4.6 ISP Mode ............................................................................................................................................................ - 31 -
4.6.1 Upgrading Firmware............................................................................................................................. - 31 -
4.7 LQ Indication Mode....................................................................................................................................... - 31 -
5Communication Modes ...................................................................................................... - 32 -
5.1 TCP Server.......................................................................................................................................................... - 32 -
5.1.1 Key parameters....................................................................................................................................... - 32 -
5.1.2 Examples.................................................................................................................................................... - 33 -
5.2 TCP Client ........................................................................................................................................................... - 36 -
5.2.1 Key parameters....................................................................................................................................... - 36 -
5.2.2 Examples.................................................................................................................................................... - 37 -
5.3 AT Command .................................................................................................................................................... - 39 -
5.3.1 Key parameters....................................................................................................................................... - 39 -
5.3.2 Examples.................................................................................................................................................... - 40 -
5.4 UDP ....................................................................................................................................................................... - 43 -
5.4.1 Key parameters....................................................................................................................................... - 43 -
5.4.2 Examples.................................................................................................................................................... - 44 -
6System Management .......................................................................................................... - 46 -
6.1 Upgrading Firmware...................................................................................................................................... - 46 -
6.1.1 Firmware .................................................................................................................................................... - 46 -
6.1.2 Processes ................................................................................................................................................... - 46 -
6.2 Status Monitoring........................................................................................................................................... - 48 -
6.2.1 TELNET........................................................................................................................................................ - 48 -
6.2.2 Status Window of ezManager ......................................................................................................... - 50 -
7Additional Functions........................................................................................................... - 53 -
7.1 Security ................................................................................................................................................................ - 53 -
7.1.1 Access Restriction (ezTCP Firewall)................................................................................................ - 53 -
7.1.2 Setting Password.................................................................................................................................... - 53 -
7.1.3 Using WEP ................................................................................................................................................ - 54 -
7.1.4 Using WPA and WPA2......................................................................................................................... - 55 -

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7.2 Option Tab Functions.................................................................................................................................... - 56 -
7.2.1 Sending MAC Address ........................................................................................................................ - 56 -
7.3 Serial Port Tab Functions............................................................................................................................. - 57 -
7.3.1 TELNET COM port Control Option (RFC 2217) - ①.............................................................. - 57 -
7.3.2 Disable TCP Transmission Delay - ②........................................................................................... - 57 -
7.3.3 Data Frame Interval - ③.................................................................................................................... - 57 -
7.3.4 TCP Server / Client mode - ④........................................................................................................ - 58 -
7.4 Additional Functions...................................................................................................................................... - 59 -
7.4.1 Factory Reset ........................................................................................................................................... - 59 -
8Checklist in Trouble............................................................................................................. - 60 -
8.1 Searching problem with ezManager...................................................................................................... - 60 -
8.2 Connection Problem over TCP/IP............................................................................................................ - 61 -
8.3 Data Communication Problem on the Serial Port .......................................................................... - 62 -
9Technical Support, Warranty, and Precaution................................................................ - 63 -
9.1 Technical Support ........................................................................................................................................... - 63 -
9.2 Warranty.............................................................................................................................................................. - 63 -
9.2.1 Refund......................................................................................................................................................... - 63 -
9.2.2 Free Repair Services ............................................................................................................................. - 63 -
9.2.3 Charged Repair Services..................................................................................................................... - 63 -
9.3 Precaution........................................................................................................................................................... - 64 -
10 Revision History................................................................................................................... - 65 -

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1 Overview
1.1 Overview
Including a PC, almost all communication devices are using serial communication.
Devices transmit and receive data in bit order in the serial communication which is quite
simple to implement but has weaknesses such as short distance and hard maintenance.
CSW-M85 is a module-typed converter enables serial devices to support TCP/IP
communication through wireless LAN (IEEE 802.11b/g/n). CSW-M85 carries out the
converting process for users to get to the network using TCP/IP protocol.
1.2 Features
Compact Module type
Both Internal (Chip) and External (U.FL socket) antennas are available.
Stable embedded TCP/IP stack
Easy configuration program (ezManager)
1.3 Application Examples
1:1 network with a PC
Figure 1-1 1:1 network with a PC

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1:1 network with a PC through an AP
Figure 1-2 1:1 network with a PC through an AP
Internet connection with a xDSL/cable modem
Figure 1-3 Internet connection with an xDSL/cable modem
1.4 Components
CSW-M85’s body
2dBi Dipole External Antenna (Option)
Evaluation board for CSW-M85 (Option)

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1.5 Specification
1.5.1 Hardware
Power
Input Voltage
DC 3.3V (±0.3V)
Current
typically 360mA
Dimension
42mm x 28mm
Weight
About 7g
CPU
ARM7 Core
Memory
512 Kbytes Flash Memory, 96 Kbytes SRAM
Serial Port
Serial
1 x UART –3.3V TTL (Baud Rate: 300bps ~ 230,400bps)
WLAN
Standard
Chip Antenna / U.FL connector(Selectable)
(IEEE 802.11b/g/n)
Temperature
Operating: -10 ~ 70℃/ Storage: -40 ~ 85℃
RoHS
RoHS Compliant
1.5.2 Software
Protocol
TCP, UDP, IP, ICMP, ARP, TELNET, DHCP, PPPoE, DNS lookup, DDNS,
Telnet COM Port Control Option(RFC2217),
WEP, WPA PSK, WPA2 PSK
Diagnose
Console port –115,200 / N / 8 / 1
Operation
mode
Normal
For Normal Data Communication
ISP
For Upgrading F/W
Serial Configuration
For Configuration via Serial
LQ Indication
For Indicating Link Quality by LED
Communicat
ion mode
TCP Server
TCP Passive Connection
TCP Client
TCP Active Connection
AT Command
TCP Passive / Active Connection
UDP
UDP –No Connection
Major
Utilities
ezManager
Configuration Utility for MS Windows
(Supports Downloading F/W)
ezVSP
Serial to TCP/IP Virtual driver for MS Windows

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1.5.3 Dimension
Top view
Figure 1-4 top view
Side / Bottom view
Figure 1-5 side / bottom view

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1.5.4 Pin assignment
CON1/CON2
CON1 and CON2 have headers of 2mm pitches.
Table 1-1 CON1
CON1
Name
Description
Direction
1
GND
Ground
-
2
SYS_RST#
System Reset (Active Low)
IN
3
ISP#
ISP pin (to enter ISP mode)
IN
4
TCP#
TCP connection state (Established - Low)
OUT
5
RXD
UART IN
IN
6
TXD
UART OUT
OUT
7
CTS
UART CTS
IN
8
RTS
UART RTS (RS232)
UART TXDE(RS485)
OUT
9
DRXD
Debugging port (UART IN)
IN
10
DTXD
Debugging port (UART OUT)
OUT
11
LINK_Q#
Link Quality
IN
12
CONFIG#
Configuration mode / Factory Reset
IN
Table 1-2 CON2
CON2
Name
Description
Direction
1
STS_LED
Status LED
OUT
2
LINK_LED#
WLAN LINK LED (Established - Low)
OUT
3
RXD_LED#
WLAN RXD LED (Data Received - Low)
OUT
4
TXD_LED#
WLAN TXD LED (Data Transmitted - Low)
OUT
5
3.3V
DC 3.3V IN
IN
6
NC
This pin is Not Connected
-
7
GND
Ground
-
8
USB_VBUS
(only for RF test)
-
9
NC
This pin is Not Connected
-
10
USB_D-
USB_D- (only for RF test)
IN/OUT
11
USB_D+
USB_D+ (only for RF test)
IN/OUT
12
GND
Ground
-

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1.5.5 Voltage Parameters
Table 1-3 voltage parameters
Parameter
Description
Min.
Typical
Max.
Unit
VDD
Supply Voltage
3.0
3.3
3.6
V
VIH
High-level input voltage
2.0
-
-
V
VIL
Low-level input voltage
-
-
0.8
V
VOH
High-level output voltage
2.9
-
-
V
VOL
Low-level output voltage
-
-
0.4
V
1.5.6 Application Circuit
Figure 1-6 application circuit
RXD_LED#
DRXD
TO USER PROCESSOR
USB_D-
LINK_LED#
STS_LED
RXD
TXD
TO USER PROCESSOR
SYS_LED
LINK_Q#
D4
L-C191GCT 12
D1
L-C191GCT 12
CTS
UART INTERFACE
R1 330/J
SYS_RST#
TXD_LED# +3.3V
ISP#
+3.3V
TCP#
RTS
TCP#
CONFIG#
FROM USER PROCESSOR
+3.3V
ISP#
RF Test
Port
USB_D+
FROM USER PROCESSOR
D3
L-C191GCT 12
D6
L-C191GCT 12
SYSTEM CONTROL
TXD_LED#
CTS
SYS_RST#
D5
L-C191GCT 12
CAN BE USED FOR MONITORING CURRENT STATUS
RXD
LINK_LED#
LED INTERFACE
RXD_LED#
DTXD
U1
CSW-M85
1-1
1-2
1-3
1-4
1-5
1-6
1-9
1-8
1-11
1-12
1-7
1-10
2-2
2-10
2-11
2-8
2-6
2-1
2-3
2-5
2-4
2-7
2-12
2-9
GND
SYS_RST#
ISP#
TCP#
RXD
TXD
DRXD
RTS
LINK_Q#
CONFIG#
CTS
DTXD
LINK_LED#
USB_D-
USB_D+
NC
NC
STS_LED
RXD_LED#
+3.3V_IN
TXD_LED#
GND
GND
GND
R3
330-4AR/J
1
2
3
45
6
7
8
FROM USER PROCESSOR TXD
RTS J1
USB_B
1
2
3
4
5
6
+5V
DM-
DM+
GND
SHD
SHD
FROM USER PROCESSOR

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1.6 Evaluation Board
The evaluation board for CSW-M85 equips an RJ45, D-SUB 9 pin Male connector and DC
power connector.
Figure 1-7 evaluation board of CSW-M85
1.6.1 Components
①D-SUB 9 pin male connector for RS232 connection
②USB socket (Only for RF Test)
③Connector for supplying 5V DC power
④JP3: Jumper for connecting / the Line driver for RS232 port.
Division
ON
OFF
using RS232
using TTL
Figure 1-8 jumper positions of JP3
⑤LED indicators 1
Table 1-4 LED indicators 1
Name
Color
Description
RXD (D7)
Green
blinking when receiving data from the serial port
TXD (D8)
blinking when transmitting data to the serial port
CTS (D9)
ON while the counterpart’s RTS is ON.
RTS (D10)
ON while M85 can receive data from the serial port

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⑥LED indicators 2
Table 1-5 LED indicators 2
Name
Color
Description
TCP# (D1)
Green
ON while TCP connection is established
3.3V (D2)
Red
ON while the power is being supplied
STS# (D3)
Green
ON while TCP connection is established
blinking every second while M85 obtains an IP address
blinking four times at once while M85 doesn’t obtain an IP address
LINK# (D4)
Green
ON when a wireless LAN is linked
RXD# (D5)
Green
blinking when receiving data from the network
TXD# (D6)
Green
blinking when transmitting data to the network
⑦JP2: jumper for changing modes
Mode
3.3V
ISP
GND
Normal
ISP
Serial Configuration
Less than 1 sec
Figure 1-9 jumper positions of JP2
⑧Console(JP5): port for debugging messages
⑨Factory(JP4): port for production and special functions
Table 1-6 JP4
Name
Description
#2
This pin is connected to LINK_Q# for LINK Quality Indication.
#3
This pin is connected to CONFIG# for Changing mode to serial
configuration or initializing ENV. (Factory Reset)
⑩CON1: All pin is connected with CON1 of M85
⑪CON2: All pin is connected with CON2 of M85
⑫LED indicators 3
Table 1-7 LED indicators 3
Name
Color
Description
LD1
Green
Same operation with STS# (except for ISP mode)
⑬Reset switch: a button which resets power of evaluation board

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2 Installation and Test
2.1 Background knowledge
CSW-M85 supports IEEE802.11b/g/n IEEE 802.11 is also called Wi-Fi and has two network
topologies, Infrastructure and Ad-hoc mode. CSW-M85 also supports WEP, WPA-PSK and
WPA2-PSK for security.
2.1.1 Topology
Infrastructure mode
In this mode, every wireless LAN station communicates through an Access Point (AP)
so that all stations can be connected to Ethernet, because AP is able to interface
witch both wireless LAN and wired LAN (Ethernet).
Figure 2-1 infrastructure mode

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Ad-hoc mode
Wireless LAN stations communicate each other without an AP in this mode. Therefore,
you can easily make this network. It is suitable for the situation when there is no
wired LAN requirement on a small-scale network. Usually, it is called peer-to-peer
mode.
Figure 2-2 Ad-hoc mode
2.1.2 Key terms
SSID(Service Set Identifier)
It is a name to identify the particular wireless LAN. So every single station should
have the same SSID to communicate in the network. In the case of infrastructure
mode, you have to set the same SSID with the AP to CSW-M85. Otherwise, it won’t
communicate at all. The maximum length of this parameter is 31 bytes and the
default is “sollae”.
Channel
IEEE802.11b/g/n wireless LAN stations communicate through the ISM (Industrial,
Scientific, and Medical) band which has the range of frequencies around 2.4GHz. IEEE
802.11 specification divides this band into 14 channels every 5MHz. If you install
more than one wireless network in the same area, the channels should be apart more
than 4 channels to avoid interferences.

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2.1.3 Authentication and Security
Authentication
A wireless LAN station should get authentication from the AP in the infrastructure
network. There are two methods for the authentication, Open system and the Shared
key.
WEP (Wired Equivalent Privacy)
The WEP is a secure protocol for wireless LAN. You need to set 64 bit or 128 bit key.
You can use both hexadecimal and ASCII code for this.
WPA (Wi-Fi Protected Access)
WPA is a security standard for users of devices equipped with Wi-Fi wireless
connection. It is an improvement on and is expected to replace the original Wi-Fi
security standard, Wired Equivalent Privacy (WEP). There are two modes about the
user authentication in WPA security. One is Enterprise which has an authentication
server and the other is PSK (Pre-Shared Key) which doesn’t have any servers. CSW-
M85 supports WPA-PSK.
WPA2
To final security of Wireless LAN, IEEE 802.11i which is a standard about Wireless LAN
has suggested the Counter Mode with Cipher Block Changing Message
Authentication Code Protocol (CCMP) for replacing the TKIP. CCMP uses Advanced
Encryption Standard (AES), it is the WPA 2 that adopts AES. WPA 2 has also both
Enterprise and PSK mode. CSW-M85 supports WPA 2-PSK.
 CSW-M85 supports WEP, WPA-PSK and WPA2-PSK

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2.2 Installation
The following instruction is written based on use of evaluation board for CSW-M85.
Before testing CSW-M85, connect the serial port to your PC. And then, make wireless
LAN link between the PC and CSW-M85 using an AP or wireless LAN adaptor.
Figure 2-3 WLAN and RS232 connection using a laptop
2.2.1 Making Wireless LAN link
Wireless LAN link is not automatically established when you connect the AP or wireless
LAN adapter to your PC. Wireless LAN parameters should be configured on CSW-M85.
Follow the steps below if you are a beginner.
Supplying Power
Supply power to the board.
Change the mode to [Serial Configuration mode]
Connect and disconnect the ISP# pin to GND between 20ms and 1 sec.
Reading environmental parameters
Run ezManager and open the COM port. And then, press the [Read] button.
Figure 2-4 reading environmental parameters
 You can download the latest version of ezManager on [Download] >> [Utility] >>
[ezManager] introduction pages of our website.

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Configuring Wireless LAN Parameters
Move to the [Wireless LAN] tab, set the same SSID and security options to the AP. If
you want to know how to set or figure the AP’s value out, please ask the
manufacturer.
Figure 2-5 an example for setting WLAN parameters
 If you want to build up Ad-hoc network, choose [Ad-hoc] in [WLAN Topology] tab
and set a value in [SSID] tab. Search the wireless network on your PC and try
connecting your PC to the network.
2.2.2 Setting Network Area
These steps are for setting both CSW-M85 and your PC to be located in the same
network. Only if they are in the same network, the TCP connection between them can be
established.
Setting PC
Add or change the IP address of the network adapter on your PC like following.
Get into the menu of [Windows Control Panel] >> [Network Connections] >>
[Properties of the Network Adapter –with right click of your mouse]. Then, you can
see the properties of [Internet Protocol (TCP/IP)]. Here, press the [Advanced] button
for adding an IP Address like the figure below.

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Figure 2-6 setting PC

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Setting CSW-M85
CSW-M85 uses ezManager as its configuration tool which is software operating on
MS Windows. This program is easy to use and doesn’t need installation. For setting
CSW-M85, search your CSW-M85 via serial port first. All the values of parameters are
set with the factory default. To apply CSW-M85 to your system, setting proper values
is required. Default values of major parameters are listed on table below. Keeping
these values without any changes are highly recommended for the simple test.
Table 2-1 default values of major parameters
Name
Default values
Network
Local IP Address
10.1.0.1
Subnet Mask
255.0.0.0
Option
TELNET
Checked
IP Address Search
Checked
Serial Port
(COM1)
Serial Type
RS232
Baud Rate
19,200bps
Parity
NONE
Data Bits
8
Stop Bit
1
Flow Control
NONE
Communication mode
TCP Server
Local Port
1470
WLAN
Topology
Infrastructure (Ad-hoc: If necessary)
SSID
sollae
Antenna
0 –Internal (chip antenna)
Security Settings
Inactivated
 To use an external antenna, connect the antenna to U.FL socket and set the
parameter to External Antenna.
Figure 2-7 parameter for selecting antenna