WSN802GPA - RFM - Datasheet.Directory

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WSN802G Series

802.11g Wireless Sensor

Network Modules

Integration Guide

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Important Regulatory Information

RFM Product FCC ID: HSW-WSN802G

IC 4492A-WSN802G

Note: T his unit has been t ested and found to c ompl y with the limits for a Class B digital device, pursuant

to Part 15 of the FCC Rules. These limits are designed to pro vide reasonable protection against harmful

interference when the equipment is operated in a commercial environment. This equipment generates,

uses, and can radiate radio frequency energy and, if not installed and used in accordance with the in-

struction manual, may cause harmful interference to radio communications. Operation of this equipment

in a residential area is lik ely to cause harmful interference in which case the user will be req uired to cor-

rect the interference at their expense.

The WSN802G has been designed to operate with any dipole antenna of up to 9 dBi of gain, or any patch

antenna of up to 12 dBi gain.

See Section 3.10 of this manual for regulatory notices and labeling requirements. Changes or modifica-

tions to a WSN802G not expressly approved by RFM may void the user’s authority to operate the

module.

Important Export Information

ECCN: 5A002.a.1 ENC

CCATS: G073573

The WSN802G products are classified under ECCN codes as 5A002.a.1 class devices and carry and

ENC encryption exception. RFM has had the WSN802G products pre-screened which allows exports to

countries lis t ed in Sup pl em ent 3 to Part 740 of the Exp ort Administrat ion Requir e ments License Excep-

tion ENC Favorable Treatment Countries. When exporting products containing any of the WSN802G

products to this list of countries, CCATS G073573 should be referenced.

Export of the WSN802G products or products containing any of the WSN802G products to other coun-

tries will require additional review and may be prohibited.

This information is provided as a guide to exporting WSN802G-based products but it is the responsibility

of the entity exporting WSN802G products or devices to determine their actual requirements.

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Table of Contents

1.0 WSN802G Introduction....................................................................................................................... 5

1.1 Features........................................................................................................................................... 6

1.2 Applications...................................................................................................................................... 6

2.0 WSN802G Operation......................................................................................................................... 7

2.1 Active and Sleep Modes.................................................................................................................. 7

2.2 Automatic I/O Reporting .................................................................................................................. 8

2.3 Data Serial Port................................................................................................................................ 8

2.4 Diagnostic Serial Port ...................................................................................................................... 8

2.5 Serial Peripheral Interface (SPI) Port .............................................................................................. 8

2.6 Analog I/O........................................................................................................................................ 9

2.7 Digital I/O....................................................................................................................................... 10

3.0 WSN802G Hardware ........................................................................................................................ 11

3.1 Absolute Maximum Ratings........................................................................................................... 11

3.2 Specifications................................................................................................................................. 12

3.3 Module Interface............................................................................................................................ 13

3.4 WSN802GC and WSN802GP Antenna Connector....................................................................... 14

3.5 Input Voltage.................................................................................................................................. 15

3.6 ESD and Transient Protection....................................................................................................... 15

3.7 Interfacing to 5 V Logic Systems................................................................................................... 15

3.8 Power-On Reset Requirements..................................................................................................... 15

3.9 Mounting and Enclosures ................................................................................................................. 16

3.10 Labeling and Not ices ..................................................................................................................... 17

4.0 Application Protocol .......................................................................................................................... 19

4.1 I/O Read Request.......................................................................................................................... 19

4.2 I/O Read - I/O Report..................................................................................................................... 20

4.3 I/O Write GPIO............................................................................................................................... 20

4.4 I/O Write PWM............................................................................................................................... 20

4.5 I/O Write Reply............................................................................................................................... 21

4.6 I/O Serial Read .............................................................................................................................. 21

4.7 I/O Serial Write............................................................................................................................... 22

4.8 I/O SPI Read.................................................................................................................................. 22

4.9 I/O SPI Write.................................................................................................................................. 23

4.10 CFG Read...................................................................................................................................... 23

4.11 CFG Read Reply ........................................................................................................................... 23

4.12 CFG Write...................................................................................................................................... 22

4.13 CFG Write Reply............................................................................................................................ 24

4.14 Configuration Parameters.............................................................................................................. 24

5.0 IP Address Discovery Protocol ......................................................................................................... 38

5.1 IP Hunt Query................................................................................................................................ 39

5.2 IP Hunt Reply................................................................................................................................. 39

6.0 SSID, Channel, Encryption and Authentication ................................................................................ 40

6.1 Connection Scanning..................................................................................................................... 40

6.2 Ad Hoc Mode................................................................................................................................. 40

7.0 SNMP Module Configuration ............................................................................................................ 41

7.1 SNMP Traps .................................................................................................................................. 41

7.2 SNMP Param eter OIDs..................................................................................................................... 42

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8.0 WSN802GDK/WSN802GADK and WSN802GDK-A/WSN802GADK-A Developer’s Kits................ 67

8.1 Kit Contents ................................................................................................................................... 67

8.2 Additional Items Needed................................................................................................................ 67

8.3 Developer Kit Assembly and Testing............................................................................................. 68

8.4 Host Configurations to Support Module Discovery ....................................................................... 70

8.5 Developer Board Features............................................................................................................. 73

8.6 WSNConfig Program Operation .................................................................................................... 75

9.0 Troubleshooting ................................................................................................................................ 92

10.0 Appendices ....................................................................................................................................... 93

10.1 Ordering Information...................................................................................................................... 93

10.2 Technical Support.......................................................................................................................... 93

10.3 WSN802G Mechanical Specifications........................................................................................... 94

10.4 WSN802G Developer Board Schematic........................................................................................ 98

11.0 Warranty.......................................................................................................................................... 101

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1.0 WSN802G Introduction

The WSN802G transceiver module is a low cost, robust solution for 802.11b/g/n sensor networks. The

WSN802G is unique in that it is able to sleep while still remaining a member of an 802.11b/g/n network.

The WSN802G’s low active current and very low sleep current makes long life battery operation practical.

The WSN802G module includes analog, digital and serial I/O, providing the flexibility and versatility

needed to serve a wide range of sensor network applications. The WSN802G module is easy to integrate

and is compatible with standard 802.11b/g/n routers.

8 0 2 . 1 1 b / g N e t w o r k w i t h W S N 8 0 2 G S e n s o r N o d e s

802.11b/g

R o u t e r

W S N 8 0 2 G

S e n s o r

N o d e 2

8 0 2 . 1 1 b / g

P r i n t e r

8 0 2 . 1 1 b / g

L a p t o p

W S N 8 0 2 G

S e n s o r

N o d e 1

A p p l i c a t i o n

S e r v e r ( P C )

Figure 1.0.1

An example 802.11b/g/n network with WSN802G sensor nodes is shown in Figure 1.0.1. A sensor net-

work application running on a server or PC communicates with one or more WSN802G sensor nodes

through a commercial 802.11b/g/n router. WSN802G sensor nodes can be used with 802.11b/g/n routers

that are also serving other applications.

W S N 8 0 2 G

ADC0

ADC1

P W M 0

G P I O 0

G P I O 1

W S N 8 0 2 G S e n s o r N o d e w i t h

D i r e c t S e n s o r I n t e r f a c e

G P I O 2

G P I O 3

ADC_REF

W A K E _ I N

R S 2 3 2

C o n v e r t e r

R A D I O _ R X D R A D I O _ T X D

S e r i a l

I/O

S P I S i g n a l s

/ H O S T _ C T S

/ H O S T _ R T S

W S N 8 0 2 G

H o s t

M i c r o c o n t r o l l e r

a n d

S e n s o r

I/O

R A D I O _ R X D

R A D I O _ T X D

W A K E _ I N

W A K E _ O U T

G P I O 0

W S N 8 0 2 G S e n s o r N o d e w i t h

H o s t M i c r o c o n t r o l l e r

A n a l o g

a n d / o r

D i g i t a l

I n p u t s

A n a l o g

a n d / o r

D i g i t a l

O u t p u t s

G P I O 1

G P I O 2

G P I O 3

R S 2 3 2

C o n v e r t e r

S e r i a l

I/O

/ H O S T _ C T S

/ H O S T _ R T S

S P I S i g n a l s

Figure 1.0.2

A WSN802G module is integrated with other components to create a complete sensor node. These com-

ponents include a host circuit board, a power supply (battery), sensor I/O electronics and/or a host micro-

controller, and a housing (external antenna also required on some WSN802G models). Two common

configurations are show in Figure 1.0.2. Serial sensor data communication between a WSN802G module

and its host microcontroller requires no protocol formatting. The WSN802G formats data received from its

host into UDP packets for RF transmission, and delivers the payload data from received UDP packets to

its host. The sensor network application on the server or PC uses a simple protocol to send and receive

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data from WSN802G sensor nodes, as detailed in Section 4. WSN802G modules can receive configura-

tion commands through either their serial port or over-the-air in UDP packets carrying SNMP commands.

1.1 Features

WSN802G modules provide a unique set of features for wireless sensor network applications:

• Compatibility with commercial and industrial 802.11b/g/n routers

• Low power consumption for long life battery operation including sleep mode

• Full -40 to +85 ºC industrial temperature range operation

• Analog and digital I/O, plus two serial and one SPI port

• Separate data and diagnostic ports

• System/application set up using just two Management Information Blocks (MIBs)

• Full 14 channel 802 .11 b/g c over ag e for worl d wide op eration

• FCC, Canadian IC and European ETSI certifications

• Four module configurations:

WSN802GC - solder reflow mounting with RF connector for external antenna connection

WSN802GCA - solder reflow mounting with integral chip antenna

WSN802GP - plug in connector mounting with RF connector for external antenna connection

WSN802GPA - plug in connector mounting with integral chip antenna

• Automatic or manual I/O data reporting

1.2 Applications

WSN802G sensor networks are well suited to applications where IEEE 802.11b/g/n router compatibility,

industrial temperature range operation and long battery life are important. Many applications match these

criteria, inc l ud ing:

• Energy Monitor ing an d Management

• Physical Asset Management

• Cold Chain Data Logging and Food Safety

• Security and Acces s Contr ol Systems

• Environmental Monitoring

• Many More

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2.0 WSN802G Operation

WSN802G operation is designed to support long battery life by allowing the module to stay in sleep mode

to the maximum extent possible. Compared to 802.11b/g cards used in notebook and handheld com-

puters, the WSN802G’s active current is also very low.

2.1 Active and Sleep Modes

Once the SNMP Server IP address has been set, the default state of the WSN802G is sleep mode. The

WSN802G has a dedicated input to switch it from sleep to active mode, WAKE_IN (Pin 26). There are five

events that will wake the WSN802G from sleep mode:

• Applying a logic high signal on the WAKE_IN pin

• Expiration of the AutoReport timer

• Expiration of Linkup trap timer

• Expiration of the Config trap timer

• Module’s Primary SNMP Server IP address has not been set (this will not wake it, it prevents it

from sleeping)

The WAKE_IN pin and AutoReport can be enabled/disabled. The Linkup timer sends a keep alive packet

to the router every 60 seconds by default. The Config timer cannot be disabled and will generate a Config

trap every 10 seconds by default. Once a module has been initially configured, the Config timer is typi-

cally set to a longer interval.

When the module wakes to an active state due to either the WAKE_IN pin or the AutoReport timer, it re-

mains awake for a time period controlled by the WakeTimeout timer. The module returns to sleep mode

when the WakeTimeout timer expires, subject to the conditions listed below. The WakeTimeout timer is

held in reset and the module remains in active mode when any of the following events occur:

• A logic high signal is held on the WAKE_IN pin

• A serial byte is received

• An RF packet is sent or received

• Module’s SNMP Server IP address has not been set

The WakeTimeout feature is used to support scenarios such as a server application parsing the I/O report

and sending back a serial string or I/O output change command, or a host processor sending a serial

string and waiting for a response.

As discussed in Section 5, the SNMP Server IP address can be set in a short period of time, allowing the

module to switch to sleep mode for battery conservation. The SNMP server IP address only needs to be

set one time.

A WSN802G module that has an SNMP Server IP Address but is not linked to an 802.11b/g/n router will

cycle between sleep and active mode under the control of the scanning algorithm, even if none of the

wake events discussed above are present.

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Whenever the module is in active mode, a logic high is asserted on WAKE_OUT (Pin 27). WAKE_OUT

can be used to signal an external processor. When the WSN802G is in sleep mode, WAKE_OUT is set

to logic low.

2.2 Automatic I/O Reporting

The WSN802G sends an I/O report when one of the following events occur:

• A logic high signal is applied to the WAKE_IN pin

• The AutoReport timer fir es (module in eit her activ e or sleep m ode)

2.3 Data Serial Port

The data serial port on the WSN802G modules supports baud rates from 1.2 to 921.6 kbps. The following

serial port configurations are supported:

• 5, 6, 7 and 8-bit character lengths

• 1 or 2 stop bits

• Even, odd, mark, space or no parity

The default serial port configuration is 9.6 kbps, 8, N,1. See Sections 4.14 and 7.2 for serial port configu-

ration details. Serial port operation is full-duplex. Data is sent and received on the serial port transpar-

ently, with configuration information sent and received as UDP datagrams. The WSN802G includes an

acknowledgement and retry mechanism to minimize data loss on RF transmissions. However, the UDP/IP

protocol being carried by the RF transmissions does not provide guaranteed end-to-end delivery. The

user must make provisions for detecting and resending data lost on an end-to-end transmission. The

WSN802G data port is supported with optional /HOST_RTS and /HOST_CTS flow control signals.

2.4 Diagnostic Serial Port

The diagnostic serial port on the WSN802G modules supports baud rates from 1.2 to 115.2 kbps. The

default diagnostic port configuration is 9.6 kbps, 8, N,1. Diagnostic port operation is full-duplex, three-

wire, without flow control support. Diagnostic data is sent and received using a simple string protocol.

Contact RFM module technical support for diagnostic port data format information.

2.5 Serial Peripheral Interface (SPI) Port

The WSN802G SPI port provides master mode functionality at data rates configurable up to 11 Mbps. SPI

port operation is full duplex in the sense that a single clock signal simultaneously shifts data into and out

of the SPI port.

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W S N 8 0 2 GS l a v e

W S N 8 0 2 G S P I M a s t e r M o d e S i g n a l i n g

/ S S

S C L K

S P I _ O U T

S P I _ I N

Figure 2.5.1

Figure 2.5.1 shows the signals a WSN802G uses in SPI Master mode. The AutoReport function triggers

the WSN802G module to clock out a configurable command string, SPI_MasterCmdStr, to collect data

from a Slave peripheral. The collected data is then transmitted as a data message. Alternatively, a host

connected to the base can transmit an SPI command as a data message to the remote. The WSN802G

will clock the command into its Slave peripheral and transmit back the Slave’s response, as show in Fig-

ure 2.5.2. In either case, data strings are limited to 256 bytes.

/ S S

S C L K

S P I _ O U T

S P I _ I N

S P I B i t C l o c k

D a t a / D a t a g r a m t o S l a v e

D a t a / D a t a g r a m f r o m S l a v e

W S N 8 0 2 G S P I M a s t e r M o d e O p e r a t i o n

Figure 2.5.2

2.6 Analog I/O

The WSN802G includes two 10-bit ADC inputs, ADC0 (Pin 18) and ADC1 (Pin 19). Pin 25 provides a full-

scale reference voltage to support ratiometric ADC measurements. ADC measurements are triggered and

added to the automatic I/O report when a logic high signal is first applied to the WAKE_ IN pin or the

AutoReport timer fires, as discussed in Section 2.2. An ADC reading is also made on the internal buss

voltage of the WSN802G and included in the automatic I/O report. These readings can also be retrieved

anytime the WSN802G is in active mode using the IO_REPORT application protocol command as dis-

cussed in Sect ion 4.1.

The WSN802G also includes a 16-bit pulse width modulated output, PWM0 (Pin 9). The PWM output is

low-pass filtered to provide an analog output voltage with ripple suppressed to 7 bits. External low-pass

filtering can be added to further suppress ripple. The full-scale PWM output is referenced to the regulated

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supply voltage (Pin 24). The PWM output is set using the IO_ WRITE_PWM application protocol com-

mand, as discussed in Section 4.4.

2.7 Digital I/O

The WSN802G includes four general purpose input/output (GPIO) ports, GPIO0 (Pin 4), GPIO1 (Pin 11),

GPIO2 (Pin 10) and GPIO3 (Pin 12). When programmed as inputs, GPIO pins include an internal weak

pull-up. The states of pins configured as inputs are captured as part of the automatic I/O report when a

logic high signal is applied to the WAKE_IN pin or the AutoReport timer fires, as discussed in Section 2.2.

These readings can also be retrieved anytime the WSN802G is in active mode using the IO_READ_RE-

QUEST application protocol command as discussed in Section 4.1. The states of GPIO pins configured

as outputs are set using the IO_WRITE_GPIO application protocol command as discussed in Section 4.3.

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3.0 WSN802G Hardware

1 8 1 9 2 0 2 1 2 2 2 31 71 6 2 4 2 5 2 6

1 5

1 4

1 3

1 2

1 1

1 0

W S N 8 0 2 G B l o c k D i a g r a m

2 7

802.11g

L o w C u r r e n t

Transceiver

R e g

F i l t e r

G N D

D I A G _ T X

D I A G _ R X

G P I O 0

R A D I O _ T X D

R A D I O _ R X D

/ H O S T _ C T S

/ H O S T _ R T S

P W M 0

G P I O 2

G P I O 1

G P I O 3

R S V D

V C C

G N D

4 4 M H z3 2 . 7 6 8 k H z

G N D

/ R E S E T

ADC1

S P I _ I N

S P I _ O U T

/ S S

S C L K

3 . 3 V _ O U T

ADC REF

W A K E _ I N

W A K E _ O U T

ADC0

B a l u n

B P F

R e g

+ 3 . 3 V

+ 1 . 8 V

R F I O

2 8 2 9 3 0

G N D

R S V D

Figure 3.0.1

WSN802G modules operate in the international 2.4 GHz ISM band over the frequency range of 2401-

2474 MHz, with a nominal RF output power of 10 mW. WSN802G modules support four standard

802.11g RF data rates, 1, 2, 5.5 and 11 Mbps. WSN802G modules provide a variety of hardware inter-

faces. There are two serial interfaces, one for data and a second for diagnostics. The data port supports

standard serial baud rates from 1.2 to 921.6 kbps, and the diagnostic port supports standard serial baud

rates from 1.2 to 115.2 kbps. Optional hardware flow control is provided for the data serial port. There is

also a serial peripheral interface (SPI), which can operate in either master or slave mode. SPI slave mode

supports data rates up to 2 Mbps, and master mode supports data rates up to 11 Mbps.

WSN802G modules includes two 10-bit ADC inputs, a 16-bit PWM (DAC) output, and four general pur-

pose input/output (GPIO) ports. WSN802G modules are available with either RF connectors for external

antennas, or with integral chip antennas (A suffix). WSN802G modules are available in two mounting con-

figurations. The WSN802GC and WSN802GCA are designed for solder reflow mounting, and the

WSN802GP and WSN802GPA are designed for plug-in connector mounting.

3.1 Absolute Maximum Ratings

Rating Sym Value Units

Input/Output Pins Except ADC Inputs -0.5 to +3.63 V

ADC Input Pins -0.5 to 1.98 V

Non-Operating Ambient Temperature Range -40 to +85 oC

Table 3.1.1

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3.2 Specifications

Characteristic Sym Minimum Typical Maximum Units

Operating Frequency Range 2401 2474 MHz

Spread Spectrum Method Direct Sequenc e

RF Chip Rate 11 Mcps

RF Data Rates 1, 2, 5.5, 11 Mbps

Modulation Type BPSK at 1 Mbps, QPSK at 2 Mbps

CCK at 5.5 and 11 Mbps

Number of RF Channels 11

RF Channel Spacing 5 MHz

Receiver Sensitivity, 8% PER:

1 Mbps RF Data Rate -92 dBm

2 Mbps RF Data Rate -90 dBm

5.5 Mbps RF Data Rate -84

11 Mbps RF Data Rate -81

RF Transmit Power 10 mW

WSN802GC and WSN802GP RF Connector U.FL Coaxial Connector

Optimum External Antenna Impedance 50 Ω

WSN802GCA and WSN802GPA Antenna Integral Chip

ADC Input Range 0 1.8 V

ADC Input Resolution 10 bits

ADC Input Impedance 1 MΩ

PWM Output Resolution 16 bits

Data Serial Port Baud Rates 1.2, 2.4, 4.8, 9.6 (default), 19.2, 28.8, 38.4,

57.6, 76.8, 115.2, 230.4, 460.8, 921.6 kbps

Diagnostic Seri al Po rt Baud Rate 1.2, 2.4, 4.8, 9.6 (default), 19.2, 28.8, 38.4,

57.6, 76.8, 115.2 kbps

Serial Peripheral Int erf ace (SPI) Data Rate, Master Mode

11 Mbps

Serial Peripheral Int erf ace (SP I ) Data Rate, Slave Mode

2 Mbps

Digital I/O:

Logic Low Input Level -0.3 0.7 V

Logic High Input Level 2.24 VCC V

Input Pull-up Resistor 50 1000 KΩ

Logic Low Output Level 0 0.4 V

Logic High Output Level 2.4 VCC V

Power Supply Voltage Range VCC +3 +3.63 Vdc

Power Supply Voltage Rippl e 10 mVP-P

Receive Mode Current 150 mA

Transmit Mode Current 200 mA

Sleep Mode Current 7.5 µA

WSN802GC and WSN802GCA Mounting Reflow Soldering

WSN802GP and WSN802GPA Mounting Socket

Operating Temperature Range -40 85 oC

Operating Relative Humi dit y Range, Non-condensing 10 90 %

Table 3.2.1

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3.3 Module Interface

Pin Name I/O Description

1 GND -

Power supply and signal ground. Connect to the host circuit board ground.

2 DIAG_TX O

Diagnostic seri al port out put.

3 DIAG_RX I

Diagnostic seri al port input.

4 GPIO0 I/O

Configurable digi t al I/O port 0. An internal weak pull-up is provided when configured as an input.

5 RADIO_TXD O

Serial data output from the radio.

6 RADIO_RXD I

Serial data input to the radio.

7 /HOST_CTS O

UART/SPI flow control output. The module sets this line low when it is ready to accept data from the

host on the RADIO_RXD or MOSI input. When the line goes high, the host must stop sending data.

8 /HOST_RTS I

UART flow control input. The host sets this line low to allow data to flow from the module on the

RADIO_TXD pin. When the host sets this line high, the module will stop sending data to the host.

9 PWM0 O

16-bit puls e-width modul ated out put with int ernal low-pass fil ter. Filter is first-order, with a 159 Hz 3 dB

bandwidth, 10K output resi st ance.

10 GPIO2 I/O

Configurable digi t al I/O port 2. An internal weak pull-up is provided when configured as an input.

11 GPIO1 I/O

Configurable digi t al I/O port 1. An internal weak pull-up is provided when configured as an input.

12 GPIO3 I/O

Configurable digi t al I/O port 3. An internal weak pull-up is provided when configured as an input.

13 RSVD -

Reserved pin. Leave unconnected.

14 VCC I

Power supply input, +3. 0 to +3.63 Vdc.

15 GND -

Power supply and signal ground. Connect to the host circuit board ground.

16 GND -

Power supply and signal ground. Connect to the host circuit board ground.

17 /RESET I

Active low module hardware reset.

18 ADC0 I

10-bit ADC input 0. ADC full scale reading can be referenc ed to t he module’s +1.8 V regulated supply.

19 ADC1 I

10-bit ADC input 1. ADC full scale reading can be referenc ed to t he module’s +1.8 V regulated supply.

20 SPI_IN I/O

This pin is the SPI master mode input.

21 SPI_OUT I/O

This pin is the SPI master mode output.

22 /SS I/O

SPI active low slave select. This pin is an output when the module is operating as a master, and an

input when it is operating as a slave.

23 SCLK I/O

SPI clock signal. This pin is an output when operating as a master, and an input when operating as

a slave.

24 3.3V_OUT O

Module’s +3.3 V regulated supply, available to power external sensor circuits. Current drai n on this

output should be no greater than 50 mA.

25 ADC_REF O

Module’s +1.8 V regulated supply, used for rati omet ric ADC readings. Current drain on this output

should be no greater than 10 mA.

26 WAKE_IN I

Active high interrupt input to wake the module from timer sleep. Can be used to wake modul e on

event, etc.

27 WAKE_OUT O

Active high output assert ed when m odul e wakes from timer sleep. Can be used to wake an

external device.

28 GND -

Connect to the host circuit board ground plane.

29 RSVD -

Reserved pin. Leave unconnected.

30 GND -

Connect to the host circuit board ground plane.

Table 3.3.1

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3.4 WSN802GC and WSN802GP An tenna Connector

A U.FL miniature coaxial connector is provided on the WSN802GC and WSN802GP modules for connec-

tion to the RFIO port. A short U.FL coaxial cable can be used to connect the RFIO port directly to an an-

tenna. In this case the antenna should be mounted firmly to avoid stressing the U.FL coaxial cable due

to antenna mounting flexure. Alternately, a U.FL coaxial jumper cable can be used to connect the

WSN802G module to a U.FL connector on the host circuit board. The connection between the host circuit

board U.FL connector and the antenna or antenna connector on the host circuit board should be imple-

mented as a 50 ohm stripline. Referring to Figure 3.4.1, the width of this stripline depends on the thick-

ness of the circuit board between the stripline and the groundplane. For FR-4 type circuit board materials

(dielectric constant of 4.7), the width of the stripline is equal to 1.75 times the thickness of the circuit

board. Note that other circuit board traces should be spaced away from the stripline to prevent signal

coupling, as shown in Table 3.4.1. The stripline trace should be kept short to minimize its insertion loss.

C o p p e r

G r o u n d

P l a n e

C o p p e r

S t r i p l i n e

T r a c e

F R - 4 P C B

M a t e r i a l

C i r c u i t B o a r d S t r i p l i n e T r a c e D e t a i l

F o r 5 0 o h m i m p e d a n c e W = 1 . 7 5 * H

Figure 3.4.1

Trace Separation from

50 ohm Microstrip

Length of Trace Run

Parallel to Microstrip

100 mil 125 mill

150 mil 200 mil

200 mil 290 mil

250 mil 450 mil

300 mil 650 mil

Table 3.4.1

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3.5 Input Voltage

WSN802G radio modules can operated from an unregulated DC input (Pin 14) in the range of 3.0 V

(trough) to 3.63 V (peak) over the temperature range of -40 to 85° C. Applying AC, reverse DC, or a DC

voltage outside the range given above can cause damage and/or create a fire and safety hazard. Further,

care must be taken so logic inputs applied to the radio stay within the voltage range of 0 to 3.3 V. Signals

applied to the analog inputs must be in the range of 0 to ADC_REF (Pin 25). Applying a voltage to a logic

or analog input outside of its operating range can damage the WSN802G module.

3.6 ESD and Transient Protection

WSN802G circuit boards are electrostatic discharge (ESD) sensitive. ESD precautions must be observed

when handling and installing these components. Installations must be protected from electrical transients

on the power supply and I/O lines. This is especially important in outdoor installations, and/or where con-

nections are made to sensors with long leads. Inadeq uate trans ie nt pr otecti on ca n result in da mag e

and/or create a fire and safety hazard.

3.7 Interfacing to 5 V Logic System

All logic signals including the serial ports on the WSN802G are 3.3 V signals. To interface to 5 V signals,

the resistor divider network shown in Figure 3.7.1 below must be placed between the 5 V signal outputs

and the WSN802G signal inputs. The output voltage swing of the WSN802G 3.3 V signals is sufficient to

drive 5 V logic inputs .

5 V

L o g i c D N T 5 0 0

2 . 2 K

4 . 3 K

Figure 3.7.1

3.8 Power-On Reset Requirements

When applying power to the WSN802G, the /RESET pin should be held low until the power supply volt-

age reaches 3.3 volts for 100 milliseconds.

3.9 Mounting and Enclosures

WSN802GC radio modules are mounted by reflow soldering them to a host circuit board. WSN802GP

modules are mounted by plugging their pins into a set of mating connectors on the host circuit board.

Refer to Section 10.3 and/or the WSN802G Data Sheet for mounting details.

WSN802G enclosures must be made of plastics or other materials with low RF attenuation to avoid com-

promising antenna performance where antennas are internal to the enclosure. Metal enclosures are not

suitable for use with internal antennas as they will block antenna radiation and reception. Outdoor enclo-

sures must be water tight, such as a NEMA 4X enclosure.

WSN802G

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3.10 Labeling and Notices

WSN802G FCC Certification - The WSN802G hardware has been certified for operation under FCC Part

15 Rules, Sect ion 15. 247. The antenna(s) used for this transmitter must be installed to provide a separa-

tion distance of at least 20 cm from all persons and must not be co-located or operating in conjunction

with any other antenna or transmitter.

WSN802G FCC Notices and Labels - This device complies with Part 15 of the FCC rules. Operation is

subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this

device must accept any interference received, including interference that may cause undesired operation.

A clearly visible label is required on the outside of the user’s (OEM) enclosure stating ”Contains FCC ID:

HSW-WSN802G.”

WARNING: This device operates under Part 15 of the FCC rules. Any modification to this device, not

expressly authorized by RFM, Inc., may void the user’s authority to operate this device. Canadian De-

partment of Communications Industry Notice - IC: 4492A-WSN802G

This apparatus complies with Health Canada’s Safety Code 6 / IC RSS 210.

ICES-003

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus

as set out in the radio interference regulations of Industry Canada.

Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables

aux appareils numeriques de Classe B prescrites dans le reglement sur le brouillage radioelectrique

edicte par Industrie Canada.

ETSI EN 300 328

The WSN802G module has passed ETSI EN 300 328 testing conducted by an independent test

laboratory.

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4.0 A pplication Protocol

In most applications, the WSN802G auto-reporting function will be used to routinely send data from a

module to the application. The WSN802G supports this type of operation through use of the auto-

reporting function and the AutoReport and WakeTimeout timers.

There are three ways to read and write data and configuration parameters to and from the WSN802G

module: (1) over the air using SNMP traps - configuration only; (2) over the air using UDP to send the

WSN protocol; and (3) through the module’s UART or SPI port using the WSN protocol. The SNMP pro-

tocol is distinct from the UDP and serial port protocol. The UDP and serial port protocol only differs in the

UPD/IP packet header data.

Modules will request SNMP configuration changes using Config Traps. The frequency of checking for

changes is configured through the Config trap timer. Details of the SNMP commands and operation is

provided in Section 7 of this manual.

Modules must be in active mode (awake) to receive API commands through either over the air UDP

commands or through the module’s UART or SPI port. In addition to sending data, auto-report transmis-

sions signal the application that the module is awake. Setting the WakeTimeout timer to 2 seconds will

keep the module awake, giving the application 2 seconds to send API commands to the module. The

module will remain awake past the 2 seconds if commands are being received or processed. Once the

commands are completed the module will return to sleep immediately if the WakeTimeout time has

elapsed.

The format of all of the WSN API commands and responses are given in Sections 4.1 through 4.13 be-

low. API commands and responses sent through a wireless server (access point, etc.) are formatted as

UDP/IP packets. The IPv4 UDP/IP packet format is shown in Figure 4.0.1 below. API commands and re-

sponses are carried in the UDP datagram payload area. In the text below, API commands and responses

will be referred to as datagrams with the understanding they are the payload of a UDP datagram when

sent through a wireless server. Automatically generated I/O reports from the WSN802G module due to

timeouts or event interrupts take the form of the IO_READ - IO_REPORT datagram shown in Section 4.2.

The IO_READ – IO_REPORT message is only available over the air and not through the module’s serial

ports.

Byte 0 Byte 1 Byte 2 Byte 3

Version Header

Length Type of

Service Total

Length

ID Flags Fragment Offset

Time to Live Protocol Header Checksum

Source IP Address

Destination IP Address

Source Port Destination Port

UDP Length Checksum

Payload (Applic ation Command)

Figure 4.0.1

WSN802G modules only accept wireless application commands from and send wireless application com-

mand data/replies to the IP address of the server running their sensor application which is configured in

the SensorServerIP parameter .

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As shown in Figure 4.0.2 below, WSN802G application protocol datagrams use a standard header begin-

ning with a protocol identifier to discriminate WSN802G protocol messages from other message types.

Datagrams are in 32-bit, big-endian format. The standard header fields are:

Protocol Identifier: Unique identifier for all WSN messages, 0x52464D49

Opcode: Code indicating the type of command or response

Transaction ID: This is an incrementing transaction reference counter. Each end of the

link must keep its own counter for transactions that it originates. The

most significant bit of the transaction ID will be set for all transactions

that the server originates.

The WSN802G application protocol messages are listed in Table 4.0.1 below. The port number that the

module sends and receives wireless UDP application messages on is defined by the SensorServerPort-

Num parameter, as discussed in Section 7.2. A WSN802G module will accept wireless UDP messages

specifically addressed to it, or that are broadcast (addressed to all modules). If a command is received

through a wireless broadcast, the WSN802G module will reply with a broadcast.

The message format is the same for both the over the air UDP payload and the serial data communicated

over either the module’s UART or SPI ports. The Protocol Identifier serves as the start character for

UART or SPI communicated packets with the Opcode used as a further validation of a API message in-

stead of application data.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode Transaction ID

Data (variable length)

Figure 4.0.2

Opcode Direction Description

0x0000 Server-to-Module IO_READ_REQUEST

0x0001 Module-to-Server IO_READ - IO_REPORT

0x0002 Server-to-Module IO_WRITE_GPIO

0x0003 Server-to-Module IO_WRITE_PWM

0x0004 Module-to-Server IO_WRITE_REPLY

0x0005 Module-to-Server IO_SERIAL_READ

0x0006 Server-to-Module IO_SERIAL_WRITE

0x0007 Module-to-Server IO_SPI_READ

0x0008 Server-to-Module IO_SPI_WRITE

0x0010 Server-to-Module CFG_READ

0x0011 Module-to-Server CFG_READ_REPLY

0x0012 Server-to-Module CFG_WRITE

0x0013 Module-to-Server CFG_WRITE_REPLY

Table 4.0.1

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4.1 I/O Read Request

The IO_READ_REQUEST datagram is used to request current I/O values, as shown in Figure 4.1.1.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0000 Transaction ID = varies

Figure 4.1.1

The module responds to an IO_READ_REQUEST with an IO_READ - IO_REPORT

4.2 I/O Read - I/O Report

The IO_READ - IO_REPORT datagram is used to report current I/O values, as shown in Figure 4.2.1.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0001 Transaction ID = varies

Timestamp [7..4]

Timestamp [3..0]

MAC Address Bytes [5..2]

MAC Address Bytes [ 1.. 0] (sender) ADC0

ADC1 VOLT

RSSI GPIO

Figure 4.2.1

The fields specific to this datagram are:

Timestamp: Timestamp of reading in 7.62939 µs timer ticks since startup

M AC Address: As an IO_READ - IO_REPORT can be sent unsolicited, the MAC ad-

dress is provided to identify the sender, which can be helpful in situations

where DHCP is used and the IP address is initially unknown or if the

sender’s IP address has been exchanged do to NAT.

ADC0: Current ADC0 reading, only the low 10 bits are significant

ADC1: Current ADC1 reading, only the low 10 bits are significant

VOLT: Current module voltage reading, 16-bit count in millivolts

RSSI: Current RSSI reading, only the low 10 bits are significant

GPIO: Current GPIO states, only GPIO lines defined as inputs are valid

The module generates an IO_READ - IO_REPORT datagram based on the AutoReportInterval and in

response to an IO_READ_REQUEST.

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4.3 I/O Write GPIO

The IO_WRITE_GPIO datagram is used to set module outputs, as shown in Figure 4.3.1.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0002 Transaction ID = varies

GPIO

Figure 4.3.1

The field specific to this datagram is:

GPIO: States for GPIO lines defined as outputs. Setting a GPIO bit to 1 sets its

output to 3.3 V, setting a bit to 0 sets its output to 0 V.

The module responds to an IO_WRITE_GPIO with an IO_WRITE_REPLY.

4.4 I/O Write PWM

The IO_WRITE_PWM datagram is to set the PWM0 output , as shown in Figure 4.4.1.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0003 Transaction ID = varies

PWM0 Reserved

Figure 4.4.1

The field specific to this datagram is:

PWM0: PWM0 setting, 16-bit unsigned value

The module responds to an IO_WRITE_PWM with an IO_WRITE_REPLY.

4.5 I/O Write Reply

An IO_WRITE_REPLY datagram is sent by the WSN802G module to confirm receipt of an

IO_WRITE_GPIO, or IO_WRITE_PWM datagram, as shown in Figure 4.5.1.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0004 Transaction ID = varies

Status

Figure 4.5.1

The field specific to this datagram is:

Status: 0x0000 = successful, 0x0001 = failed

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4.6 I/O Serial Read

The IO_SERIAL_READ datagram shown in Figure 4.6.1 is used by the module to send out data received

on its serial port.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0005 Transaction ID = varies

Timest amp Hig h Bytes

Timest amp Low Byt es

MAC Address Bytes [5..2]

MAC Address Bytes [ 1.. 0] (sender) Length

Serial Dat a, 0-256 byt es

Figure 4.6.1

The fields specific to this datagram are:

Timestamp: Timestamp of reading in 7.62939 µs timer ticks since startup

M AC Address: As an IO_SERIAL_READ can be sent unsolicited, the MAC address is

provided to identify the sender, which can be helpful in situations where

DHCP is used and the IP address is initially unknown

Length: Length of serial data string

Serial Data: Serial data string, 0-256 bytes

When a module receives a string on its serial port, it send an IO_SERIAL_READ message to its server. If

the module receives an IO_SERIAL_WRITE message, it will output the received data on its serial port.

4.7 I/O Serial Write

The IO_SERIAL_WRITE datagram shown in Figure 4.7.1 is used to send data to the module to output on

its serial po rt.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0006 Transaction ID = varies

Length Serial Data, 0-256 byt es

Figure 4.7.1

The fields specific to this datagram are:

Length: Length of serial data string

Serial Data: Serial data string, 0-256 bytes

When the module receives an IO_SERIAL_WRITE message, it will output the received data on its serial

port. A serial string length of zero causes no data output, but is allowed for system testing purposes.

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4.8 I/O SPI Read

The IO_SPI_READ datagram shown in Figure 4.8.1 is used by the module to send out data received on

its serial peripheral interface (SPI) port.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0007 Transaction ID = varies

Timest amp Hig h Bytes

Timest amp Low Byt es

MAC Address Bytes [5..2]

MAC Address Bytes [ 1.. 0] (sender) Length

SPI Data, 0-256 bytes

Figure 4.8.1

The fields specific to this datagram are:

Timestamp: Timestamp of reading in 7.62939 µs timer ticks since startup

M AC Address: As an IO_SPI_READ can be sent unsolicited, the MAC address is pro-

vided to identify the sender, which can be helpful in situations where

DHCP is used and the IP address is initially unknown

Length: Length of serial data string

SPI Data: Data string, 0-256 bytes

The WSN802G SPI port operates in master mode. The auto-reporting function triggers the WSN802G SPI

port to clock out a stored command string, SPI_MasterCmdStr, to collect data from a slave peripheral.

The collected data is then transmitted as an IO_SPI_READ datagram.

4.9 I/O SPI Write

The IO_SPI_WRITE datagram shown in Figure 4.9.1 is used to send data to the module to output on its

serial peri phera l interface (SPI) port.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0008 Transaction ID = varies

Length SPI Data, 0-256 bytes

Figure 4.9.1

The fields specific to this datagram are:

Length: Length of serial data string

SPI Data: Data string, 0-256 bytes

The WSN802G SPI port operates in master mode, where the WSN802G clocks out data to its slave.

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4.10 CFG Read

The CFG_READ datagram is used to read a configuration register from the module through the wireless

link, serial port or SPI port. Configuration registers are sorted into banks. The register location in a bank

may also be referred to as the register’s offset.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0010 Transaction ID = varies

Length Bank

Location

Figure 4.10.1

The fields specific to this datagram are:

Length: Total length of the following Bank and Location sections, in bytes

Bank: Target register bank number

Location: Target register location

The module responds to a CFG_READ with a CFG_READ_REPLY. Note that the module must be awake

in order to receive and process this command.

4.11 CFG Read Reply

In response to a CFG_READ command, the CFG_READ_REPLY datagram is sent by the module to pro-

vide the contents of a configuration register

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0011 Transaction ID = varies

Length Bank

Location Value

Figure 4.11.1

The fields specific to this datagram are:

Length: Total length of the following bank, register and value sections, in bytes

Bank: Target register bank number

Location: Target register location

Value: Value in target register

IMPORTANT NOTE: The register value is returned in Little-Endian order, least significant byte first.

4.12 CFG Write

The CFG_WRITE datagram is sent through the module’s wireless link, serial port or SPI port to set a con-

figuration register in the module. Configuration registers are sorted into banks. The register location in a

bank may also be referred to as the register’s offset.

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Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0012 Transaction ID = varies

Length Bank

Location Value

Figure 4.12.1

The fields specific to this datagram are:

Length: Total length of the following bank, register and value sections, in bytes

Bank: Target register bank

Location: Target register location

Value: Target register value

IMPORTANT NOTE: The register value must be entered in Little-Endian order, least significant byte first.

The module responds to a CFG_WRITE with a CFG_WRITE_REPLY. Note that the module must be

awake in order to receive and process this command.

4.13 CFG Write Reply

A CFG_WRITE_REPLY datagram is sent by the module to confirm the receipt of a CFG_WRITE

datagram.

Byte 0 Byte 1 Byte 2 Byte 3

WSN802G Protocol Identif i er = 0x52464D49

Opcode = 0x0013 Transaction ID = varies

Length Status

Figure 4.13.1

The fields specific to this datagram are:

Length: Length of the remainder of the packet in bytes

Status: Status code: 0 = successful, 1 = failed

4.14 Configuration Parameters

The parameters that can be accessed through the CFG series API commands are detailed below, organ-

ized by bank and locat io n. T he default va lues in T able s 4.14.1 thro ugh 4.1 4.8 are sho wn as the y would

be sent using CFG_WRITE or received using CFG_READ. All numerical values in the tables are in Little-

Endian b yte order, start ing with the le as t signif ic ant b yte on the left. ASCI I strings hol din g a repres en ta-

tion of a numerical value, such as the AutoReportInterval in Bank 1, Location 2 below, use Little-Endian

byte order. Strings holding text, such as the SensorName in Bank 1, Location 1 below, are in reading byte

order, first character on the left, last character on the right.

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Bank 1 - General Module Configuration

Bank Location Name R/W Size, bytes Range Default

1 1 SensorName R/W 128 ASCII String “WSN Sensor”

1 2 AutoReportInterval R/W 8 ASCII String “0000000A00000000” (5 s)

1 3 SensorServerIP R/W 4 Class A,B,C 0xC803A8C0 (192.168.3.200)

1 4 SensorServerPort R/W 4 1..216 -1 0x3F200000 (8255)

1 5 WakeOutPredelay R/W 4 0..232 -1 0x0A000000 (10 ms)

1 6 WakeOutPostdelay R/W 4 0..232 -1 0x0A000000 (10 ms )

1 7 WakeTimeout R/W 4 0..232 -1 0x00000000 (0 ms)

1 8 TxPower R/W 4 0..7 0x00000000 (8 mW)

1 9 HardwareRevision R N/A ASCII String 0x312E302E30 (1.0.0)

1 10 FirmwareRevision R N/A ASCII String 0x322E302E31303236 (2.0.1026)

1 11 FirmwareBuildDate R 4 ASCII String unique to each buil d date

1 12 TxRetryLimit R/W 4 0..15 0x04000000 (4 retries)

1 13 NetworkMode R/W 4 0..1 0x00000000 (only UDP currently supported)

Table 4.14.1

SensorName - this parameter is a user-assignable sensor module name, for example “Utility Room Tem-

perature Sensor”. The name can contain up to 128 bytes.

AutoReportInterval - this parameter sets the interval at which the sensor will send periodic reports. The

parameter scaling is in microcontroller clock cycles of 0.029802322 µs. This parameter is a 64-bit number

formatted as an ASCII string of the equivalent hexadecimal value.

SensorServerIP - this parameter holds the IP address of the server for the module to send sensor data

reports. The IP address is formatted as a 32-bit value.

SensorServerPort - this parameter holds the port number of the server for the module to send sensor

data reports. The port number is formatted as a 32-bit value, with the lower 16 bits containing the port

number and the upper 16 bits set to zero.

WakeOutPredelay - this parameter sets the duration in milliseconds the WAKE_OUT pin turns on to acti-

vate an external user circuit prior to the rest of the module waking up.

WakeOutPostdelay - this parameter sets the duration in milliseconds the WAKE_OUT turn on to activate

an external user circuit subsequent to the rest the module waking up.

WakeTimeout - this parameter sets the duration of inactivity in milliseconds that triggers the module to go

back to sleep after being activated.

TxPower - this parameter set the transmitter output power level. Changes to this parameter require a re-

boot to take effect. The parameter range is 0 to 7, with 0 the highest power setting.

HardwareRevision - this parameter holds the revision code of the module hardware. This parameter is

read-only.

FirmwareRevision - this parameter holds the firmware revision code. This parameter is read-only.

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FirmwareBuildDate - this parameter codes the build date and timestamp of the module firmware as an

ASCII string. This parameter is read-only.

TxRetryLimit - this parameter sets the retry limit for 802.11 transmissions.

NetworkMode - this parameter specifies the IP format for sending auto-reports. Set this parameter to 0x00

for UDP format.

Bank 2 - Module I/O Configuration

Bank Location Name R/W Size, bytes Range Default

2 1

GPIO_In R 4 0..

0x0000000F 0x0C000000

2 2

GPIO_Out R/W 4 0..

0x0000000F 0x0C000000

2 3

ADC_Values R/W 4 0..

0x03FF03FF N/A

2 4

BattRSSI_Values R/W 4 0..

0x03FF00FF N/A

2 5

PWM_Values R/W 4 0..

0x000003FF 0x00000000 (0 V)

2 6

GPIO_Config R/W 4 0..

0x00888888 0x22448800

2 7

GPIO_Set W 4 0..

0x0000000F N/A

2 8

GPIO_Clear W 4 0..

0x0000000F N/A

Table 4.14.2

GPIO_In - this parameter reads the state of the GPIO. This parameter is read-only.

GPIO_Out - this parameter sets the states of the GPIO pins configured as outputs.

ADC_ Values - this parameter holds the concatenation of the last readings of ADC1 and ADC0. The lower

two bytes of this parameter hold the right justified 10-bit ADC0 reading. The upper two bytes of this pa-

rameter hold the right justified 10-bit ADC1 reading. The module’s ADC_REF output (Pin 25) provides a

1.8 V ADC full-scale reference voltage to support ratiometric sensor measurements.

BattRSSI_Values - this parameter holds the concatenation of the current module input voltage and the

RSSI value of the last received 802.11 packet. The lower two bytes of this parameter hold the right justi-

fied 8-bit RSSI reading. The upper two bytes of this parameter hold the right justified 10-bit input voltage

reading, with a 3.600 V input providing a full scale 0x03FF count, or 3.519 mV/count.

PWM_Values - this parameter holds the concatenation of the PWM output values. The lower two bytes of

this parameter hold the 16-bit PWM0 setting. The upper two bytes are reserved. Full scale PWM outputs

equal the module input voltage.

GPIO_Config - this parameter sets the GPIO direction, the pullup/pulldown configuration of each GPI con-

figured as input, and the alternate GPIO functions. The parameter consists of a four 4-bit fields, with each

GPIO, 0 through 3, having a 4-bit field to control its configuration. A 0x0 field sets a GPIO as an input, 0x2

field sets a GPIO as an input with internal pulldown, 0x3 sets a GPIO as an input with an internal pullup,

0x4 selects output, and a 0x8 value specifies an alternate function where defined.

GPIO_Set - writing to this parameter location sets GPIO output values. Setting a '1' in a bit position sets

the corresponding GPIO output to a logic high state. Only bits corresponding to GPIOs configured as out-

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puts are effected. The four bit positions in this parameter are right registered, with GPIO0 in the right-most

bit position .

GPIO_Clear - writing to this parameter location clears GPIO output values. Setting a '1' in a bit position

clears the corresponding GPIO output to a logic low state. Only bits corresponding to GPIOs set as out-

puts have any effect. The four bit positions in this parameter are right registered, with GPIO0 in the right-

most bit position.

Bank 3 - Module Serial Configuration

Bank Location Name R/W Size, bytes Range Default

3 1

SerialDivisor R/W 4 0..216 -1 0x30000000 (9600 bps)

3 2

SerialCharFormat R/W 4 0..3 0x03000000 (8-bit)

3 3

SerialStopBits R/W 4 0..1 0x00000000 (1 stop bit)

3 4

SerialParity R/W 4 0..4 0x04000000 (no parity)

3 5

SerialRxTimeout R/W 4 0..232 -1 0x20000000 (32 ms)

3 6

SerialFlowControl R/W 4 0..1 0x00000000 (flow control dis abl ed)

3 7

DiagDivisior R/W 4 0..232 -1 0x30000000 (9600 bps)

3 8

DiagEnable R/W 4 0..1 0x01000000 (diagnostic port enabled)

3 9

SPI_Mode R/W 4 0..2 0x00000000 (disabled)

3 10

SPI_MasterClock-

Divisor R/W 4 0..232 -1 0x64000000

3 11

SPI_MasterCmd-

String R/W 4 ASCII String “” (null string)

Table 4.14.3

SerialDivisor - this parameter sets the main serial port baud rate, equal to 460800 divided by

the SerialD ivis or value.

SerialCharFormat - this parameter sets the format for the main serial port as follows (Big-Endian format):

0x00000000 for 5-bit format

0x00000001 for 6-bit format

0x00000002 for 7-bit format

0x00000003 for 8-bit format (default)

SerialStopBits - this parameter sets the number of stop bits for the main serial port as follows :

0x00000000 for 1 stop bit (default)

0x00000001 for 2 stop bits

SerialParity - this parameter sets the parity configuration for the main serial port as follows:

0x00000000 for odd parity

0x00000001 for even parity

0x00000002 for mark parity

0x00000003 for space parity

0x00000004 for no parity (default)

SerialRxTimeout - this parameter sets the received message timeout for the main serial port. A received

message is interpreted as complete when no additional bytes are received during a timeout interval. The

SerialRxTimeout parameter is scaled in milliseconds.

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SerialFlowControl - this parameter enables/disables /HOST_RTS - /HOST_CTS hardware flow control:

0x00000000 disables flow control (default)

0x00000001 for enables flow control

DiagDivisior - this parameter sets this parameter sets the diagnostic serial port baud rate, equal to

460800 divided by the DiagDivisor value.

DiagEnable - this parameter enables/disables diagnostic port operation:

0x00000000 disables diagnostic port operation

0x00000001 enables diagnostic port operation (default)

SPI_Mode - this parameter sets the SPI port mode:

0x00000000 to disable SPI port (default)

0x00000002 to enable SPI master mode

SPI_MasterClockDivisor - this parameter sets SPI master mode bit rate, equal to 11,000,000 divided by

the SPI_MasterClockDivisor value.

SPI_MasterCmdString - this parameter holds the command string to clock into the peripheral SPI slave

when the module is acting as an SPI m aster .

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Bank 4 - Module WLAN Configuration

Bank Location Name R/W Size, bytes Range Default

4 1

Ap1_Ssid R/W 32 ASCII String “WSN-Default”

4 2

Ap1_Channel R/W 4 0..11 0x0B000000

4 3

Ap1_AuthMode R/W 4 1..8 0x03000000 (automatic authent ic ation)

4 4

Ap1_EncryptionMode R/W 4 1..165 0xA5000000 (all)

4 5

Ap1_PskPassphrase R/W 32 ASCII String “WSN-PASSWORD”

4 6

Ap1_PskKey R/W 32 ASCII String N/A

4 7

Ap1_WepKeyId R/W 1 0..3 N/A

4 8

Ap1_WepKeyLength R/W 1 5..13 N/A

4 9

Ap1_WepKeyValue R/W 13 ASCII String N/A

4 10

Ap2_Ssid R/W 32 ASCII String “WSN-Default”

4 11

Ap2_Channel R/W 4 0..11 0x0B000000

4 12

Ap2_AuthMode R/W 4 1..8 0x03000000 (automatic authent ic ation)

4 13

Ap2_EncryptionMode R/W 4 0..165 0xA5000000 (all)

4 14

Ap2_PskPassphrase R/W 32 ASCII String “WSN-PASSWORD”

4 15

Ap2_PskKey R/W 32 ASCII String N/A

4 16

Ap2_WepKeyId R/W 1 0..3 N/A

4 17

Ap2_WepKeyLength R/W 1 5..13 N/A

4 18

Ap2_WepKeyValue R/W 13 ASCII String N/A

4 19

Ap3_Ssid R/W 32 ASCII String “WSN-Default”

4 20

Ap3_Channel R/W 4 0..11 0x0B000000

4 21

Ap3_AuthMode R/W 4 1..8 0x03000000 (automatic authent ic ation)

4 22

Ap3_EncryptionMode R/W 4 0..165 0xA5000000 (all)

4 23

Ap3_PskPassphrase R/W 32 ASCII String “WSN-PASSWORD”

4 24

Ap3_PskKey R/W 32 ASCII String N/A

4 25

Ap3_WepKeyId R/W 1 0..3 N/A

4 26

Ap3_WepKeyLength R/W 1 5..13 N/A

4 27

Ap3_WepKeyValue R/W 13 ASCII String N/A

4 28

AdHoc_Ssid R/W 32 ASCII String “RFM-MAC” (MAC = modul es MAC addr.)

4 29

AdHoc_Channel R/W 4 0..11 0x0B000000

4 30

AdHoc_AuthMode R/W 4 1..8 0x01000000 (open authentication)

4 31

AdHoc_Encryption-

Mode R/W 4 0..165 0x08000000 (none)

4 32

AdHoc_Psk-

Passphrase R/W 32 ASCII String “” (null bytes)

4 33

AdHoc_PskKey R/W 32 ASCII String “” (nul l bytes)

4 34

AdHoc_WepKeyId R/W 1 0..3 N/A

4 35

AdHoc_WepKey-

Length R/W 1 5..13 N/A

4 36

AdHoc_WepKeyValue R/W 13 ASCII String N/A

Table 4.14.4

Ap1_Ssid - this parameter holds the SSID of preferred access point 1.

Ap1_Channel - this parameter sets the channel of operation for preferred access point 1.

Ap1_AuthMode - this parameter sets the authentication mode for preferred access point 1.

as follows (Big-Endian format):

www.RFM.com Technical support +1.678.684. 2000 Page 30 of 101

0x00000001 - open authentication, allows connection to a WLAN with any type of authentication

0x00000002 - shared authentication, allows connection to a WLAN only with WEP shared

authentication; must be used to connect to a WEP shared WLAN

0x00000003 - automatic authentication, allows connection to a WLAN with any type of

authentication

0x00000004 - WPA authentication, allows connection to a WLAN with WPA/WPA2 802.1x

authentication; WPA2 is selected over WPA if both are present

0x00000005 - WPAPSK authentication, allows connection to a WLAN with WPA/WPA2

authentication; WPA2 is selected over WPA if both are present

0x00000007 - WPA2 authentication, allows connection to a WLAN with WPA2 802.1x authentication

0x00000008 - WPA2PSK authentication, allows connection to a WLAN with WPA2 PSK

authentication

Ap1_EncryptionMode - this parameter selects the encryption mode for preferred access point 1 as

follows:

0x00000001 - allows connection to a WLAN only with WEP encryption

0x00000004 - allows connection to a WLAN only with TKIP encryption, either unicast or group;

it connects if either unicast cipher or group cipher is TKIP

0x00000020 - allows connection to a WLAN only with CCMP encryption, either unicast or group;

it connects if either unicast cipher or group cipher is CCMP

0x00000080 - allows connection to a WLAN only with no encryption

0x000000A5 - allows connection to a WLAN with any of the above modes

Note that encryption mode 0x000000A5 is derived from logically ORing the values of the four encryption

modes above it. Any combination of ORed encryption modes are allowed.

Ap1_PskPassphrase - this parameter holds the PSK passphrase for preferred access point 1.

Ap1_PskKey - this parameter holds the PSK key for preferred access point 1.

Ap1_WepKeyId - this parameter sets the WEP key ID for preferred access point 1. The range of this pa-

rameter is 0x00000000 to 0x00000003.

Ap1_WepKeyLength - this parameter sets the WEP key length in bytes for preferred access point 1. The

range of this parameter is 0x00000005 to 0x0000000D (5 to 13).

Ap1_WepKeyValue - this parameter holds the WEP key ASCII string for access point 1, 5 to 13 bytes.

The number of bytes must match the WEP key length.

Ap2_Ssid - this parameter holds the SSID of preferred access point 2.

Ap2_Channel - this parameter sets the channel of operation for preferred access point 2.

Ap2_AuthMode - this parameter sets the authentication mode for preferred access point 2

as follows:

0x00000001 - open authentication, allows connection to a WLAN with any type of authentication

0x00000002 - shared authentication, allows connection to a WLAN only with WEP shared

authentication; must be used to connect to a WEP shared WLAN

www.RFM.com Technical support +1.678.684. 2000 Page 31 of 101

0x00000003 - automatic authentication, allows connection to a WLAN with any type of

authentication

0x00000004 - WPA authentication, allows connection to a WLAN with WPA/WPA2 802.1x

authentication; WPA2 is selected over WPA if both are present

0x00000005 - WPAPSK authentication, allows connection to a WLAN with WPA/WPA2

authentication; WPA2 is selected over WPA if both are present

0x00000007 - WPA2 authentication, allows connection to a WLAN with WPA2 802.1x authentication

0x00000008 - WPA2PSK authentication, allows connection to a WLAN with WPA2 PSK

authentication

Ap2_EncryptionMode - this parameter selects the encryption mode for preferred access point 2 as