Redpine Signals RSWC301 User Manual

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Redpine Signals, Inc.

2107 N. First Street, #680

San Jose, CA 95131. Tel: (408) 748-3385

Fax: (408) 705-2019

Email: info@redpinesignals.com

Website: www.redpinesignals.com

Redpine Signals, Inc.

2107 N. First Street, #680

San Jose, CA 95131. Tel: (408) 748-3385

Fax: (408) 705-2019

Email: info@redpinesignals.com

Website: www.redpinesignals.com

RS-WC-301

December 2012

Redpine Signals, Inc. Proprietary and Confidential.

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Table of Contents

RS-WC-301 ............................................................................... 1

1 Introduction ........................................................................ 6

2 Components on the EVB ....................................................... 7

2.1 Test Setup ........................................................................... 13

3 Using the EVB in UART mode ............................................. 14

3.1 Configure Serial port in PC .................................................. 14

3.2 Configure Serial Port Monitor in the PC ............................... 19

4 Evaluation of Client Mode with Personal Security .............. 23

4.1 Configuration and Test Procedure ....................................... 25

5 Evaluation of Client Mode with Enterprise Security ............ 30

5.1 Radius Server Configuration ............................................... 30

5.2 AP Settings ......................................................................... 33

5.3 Evaluating EAP-TLS Mode ................................................... 34

5.4 Evaluating EAP-TTLS, EAP-FAST and PEAP Modes ............... 36

6 Evaluation of Wi-Fi Direct Mode ......................................... 39

6.1 Configuration and Test Procedure ....................................... 39

7 Evaluation of Access Point Mode ........................................ 44

7.1 Configuration and Test Procedure ....................................... 44

8 Wireless Configuration ...................................................... 47

8.1 Configuration to join a Specific AP ...................................... 47

8.2 Configuration to create an AP ............................................. 51

9 Using the Module in USB Mode ........................................... 55

10 Using the Module in SPI Mode ......................................... 57

10.1 Sample flow for evaluating SPI mode ................................. 58

11 Upgrading Firmware Through the UART Interface ........... 60

12 Wireless Firmware Upgrade ............................................ 64

12.1 Users of Firmware Lower than version 2.1.0.1.2.5 .............. 64

12.2 Upgrading Firmware Wirelessly .......................................... 64

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Table of Figures

Figure 5: RS-WC-301-EVB ............................................................................ 7

Figure 6: Client Mode Set-up with Personal Security .................................. 23

Figure 7: Access Point Settings (Personal Security Mode) .......................... 24

Figure 8: Commands in Hyper-terminal ...................................................... 26

Figure 9: Execution of TCP.exe in Laptop C ................................................ 28

Figure 10: Enterprise Security Set-up ........................................................ 30

Figure 11: Access Point Settings (Enterprise Security Mode) ..................... 33

Figure 12: Command Flow in Enterprise Security Mode .............................. 35

Figure 13: Running of Python Script WiFi_Enterprise_TLS.py .................... 35

Figure 14: Wi-Fi Direct Set-up .................................................................... 39

Figure 15: Messages in Hyper-terminal ...................................................... 41

Figure 16: Command Flow in Wi-Fi Direct Mode ......................................... 42

Figure 17: Access Point Set-up ................................................................... 44

Figure 20: Interface between Module and Host .......................................... 57

Figure 21: Flow of Commands in SPI mode ................................................ 59

Figure 22: Set-up for Wireless Firmware Upgrade ...................................... 64

Figure 23: Signal Status During Firmware Upgrade .................................... 67

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List of Tables

Table 1:UART Header (RS-WC-301).............................................................. 8

Table 2: Interface Selection ......................................................................... 8

Table 3: General Purpose Header (RS-WC-301-EVB) .................................. 10

Table 4: General Purpose Header(RS-WC-301-EVB) ................................... 11

Table 5: SPI Header Pins ............................................................................ 12

Table 6: Sensor Interface Header ............................................................... 13

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1 Introduction

This document describes how to use the RS-WC-301 EVB. It describes the sequence of commands and set-up requirements to quickly evaluate the major functions of the modules. The document should be used in conjunction with the Programming Reference Manual (PRM) where all commands to configure and operate the modules are described in detail.

Even if the user does not plan to use the UART interface, it is recommended to go through the UART sections because all the set-ups to evaluate different functionalities of the module in UART mode are directly reusable in the SPI and USB modes also.

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2 Components on the EVB

The RS-WC-301 EVB has various switches and headers to enable the user to configure it for different scenarios.

Figure 1: RS-WC-301-EVB

USB Connector for Power

The power for the board can be supplied through this connector. Note that this connector is used only for supplying power. For actual communication using USB, the USB interface described below is used.

Power Selection Switch

The power selection switch should be put in the position shown in the figures above so that the board receives power from the USB connector.

Reset

Push button reset for the board. Note that there is a power-on reset circuit on the board that generates the necessary reset. This additional push-button is to reset the module during normal operation.

UART Connector

A DB9 connector is provided to interface the UART port.

UART Header for MCU

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Pin number

Pin name

Direction

Description

NC - This pin must be left unconnected

UART-RX

Input

UART Rx pin of the module

UART-TX

Output

UART Tx pin of the module

UART-CTS

Not used in current firmware. Should be left unconnected

UART-RTS

Not used in current firmware. Should be left unconnected

GND

Ground

GND

Ground

GND

Ground

Switch #

UART Mode

SPI Mode

USB

OFF

If the EVB needs to be connected to the serial interface of an MCU platform, this header can be used. The voltage level of the UART Tx and Rx pins of this header is 3.3V. The Ground pin should be connected to a corresponding ground signal of the MCU board. For RS-WC-301 the header assignment is shown below

Table 1:UART Header (RS-WC-301)

Mode Selection Switches

To select the interface in the EVB, configure the individual switches of Mode Selection Switch bank as shown in the below table.

Table 2: Interface Selection

Card Ready

The Card Ready LED glows after the module has booted up successfully. It is an indication that the EVB is ready to accept commands from the Host.

WIFI Activity

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Pin number

Pin name

Direction

Description

SPI_READY

Output

Handshake signal used in SPI mode and connected to a GPIO pin of the Host MCU. In other modes, this signal can be left open

NC - No connect

RESET_N

Input

Active low reset input. This can be connected to the Host MCU to reset the module from the Host. If not used, should be left open

NC - No connect

WAKEUP

Input

The module wakes up from sleep if a logic high is driven into this pin. Used only in SPI mode, should be left open in UART mode

PT_GPIO2

Output

Pass through output pin controllable by Host software. Not used in current firmware, should be left open

ADC2

Input

Analog input to internal ADC. Not used in current firmware, should be left open

PT_GPIO1

Output

Pass through output pin controllable by Host software. Not used in current firmware, should be left open

GND

Ground

VCC

Power

3.3V power supply. If the USB port for power supply is not used, this pin can be used to drive power to the EVB from the Host MCU platform. The direction

of the “Power Selection” switch is

ignored in this case. The maximum current sourcing capacity of the Host should be 500mA. If not used, this pin should be left open

ADC1

Input

Analog input to internal ADC. Not used in current firmware, should

The LED indicates that wireless data transfer activity is in progress. This LED is not used in the current firmware.

General Purpose Header

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be left open

NC - No connect

BT_PRIORITY

Input

Used to indicate through logic high that BT is transmitting high priority traffic. When BT coexistence is not used, this pin should be grounded

NC - No connect

WLAN_ACTIVE

Output

Used for BT Coexistence. It indicates with logic high that WLAN activity is in progress. When low, BT device has the opportunity to transmit. Not used in current firmware, should be left open

NC - No connect

GND

Ground

Pin number

Pin name

Direction

Description

SPI_READY

Output

Handshake signal used in SPI mode and connected to a GPIO pin of the Host MCU. In other modes, this signal can be left open

NC - No connect

RESET_N

Input

Active low reset input. This can be connected to the Host MCU to reset the module from the Host. If not used, should be left open

NC - No connect

WAKEUP

Input

The module wakes up from sleep if a logic high is driven into this pin. Used only in SPI mode, should be left open in UART mode

PT_GPIO2

Output

Pass through output pin controllable by Host software. Not used in current firmware, should be left open

NC - No connect

PT_GPIO1

Output

Pass through output pin controllable by Host software. Not used in current firmware, should

Table 3: General Purpose Header (RS-WC-301-EVB)

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be left open

GND

Ground

VCC

Power

3.3V power supply. If the USB port for power supply is not used, this pin can be used to drive power to the EVB from the Host MCU platform. The direction of the

“Power Selection” switch is

ignored in this case. The maximum current sourcing capacity of the Host should be 500mA. If not used, this pin should be left open

NC - No connect

BT_PRIORITY

Input

Used to indicate through logic high that BT is transmitting high priority traffic. When BT coexistence is not used, this pin should be grounded

NC - No connect

WLAN_ACTIVE

Output

Used for BT Coexistence. It indicates with logic high that WLAN activity is in progress. When low, BT device has the opportunity to transmit. Not used in current firmware, should be left open

NC - No connect

GND

Ground

Pin Number

Pin Name

Direction Description

No connect

SPI_CS

Input

SPI slave select. Active low.

GND

Ground

This pin must be left unconnected

SPI_CLK

Input

SPI clock. Max frequency of 12.5

Table 4: General Purpose Header(RS-WC-301-EVB)

SPI Header

The SPI header is used to connect the SPI interface of the module to a Host MCU.

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MHz

GND

Ground

SPI_MOSI

Input

SPI data input

SPI_MISO

Output

SPI data output

INTERRUPT

Output

Active high, level triggered interrupt, used in SPI mode. The interrupt is raised by the module to indicate there is data to be read by the Host, or to indicate the module has woken up from sleep. In UART mode, it can be left open

No connect

Pin Number

Pin Name

Direction Description

No connect

GND

Ground

This pin must be left unconnected

ADC2

Input

Analog input to internal ADC. Not used in current firmware, should be left open

GND

Ground

ADC1

Input

Analog input to internal ADC. Not used in current firmware, should be left open

WF_HNDSHKE1

Input

Handshake signal for wireless firmware upgrade. Should be connected to a GPIO pin of the Host MCU

No connect

WF_HNDSHKE2

Ouput

Handshake signal for wireless firmware upgrade. Should be connected to a GPIO pin of the Host MCU

UART Interface Selection

Table 5: SPI Header Pins

These switches are present in RS-WC-301-EVB. If both the switches are put in the direction shown by the green arrow, the DB9 connector for UART is selected. If the switches are put in the direction shown by the red arrow, the “UART Header for MCU” is selected.

Sensor Interface Header

This header is present RS-WC-301-EVB.

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Table 6: Sensor Interface Header

USB Interface

This is a USB 2.0 interface and is supported in firmware version

2.0.0.1.2.4 and above.

Jumper

The jumper shown in some versions of the EVBs can be used for measurement of current consumed by the module.

NOTE: EVB Versions below 3.1 do not support Power Save Mode 3 (Refer to Programming Reference Manual version 1.9 or higher for definition of this mode).

2.1 Test Setup

The following additional components (not included with the EVB) are required to complete the procedures described here.

1. PC with an available serial port, and running Windows XP. The PC

would be interfaced to the UART port of the EVB.

2. An 802.11a, 11b, 11g, or 11n Access Point with administrative

access to change its settings

3. A RADIUS server for operation in enterprise security mode (see

section Evaluation of Client Mode with Enterprise Security for details)

4. A Wi-Fi Direct™ compatible mobile phone or laptop (see section

Evaluation of Wi-Fi Direct Mode )

5. A third party client device, such as a laptop or Wi-Fi phone, for

evaluating the EVB in the Access Point mode.

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3 Using the EVB in UART mode

The following sections describe how to use the Evaluation Board in UART mode. The sections should be used in conjunction with the Programming Reference Manual to understand the commands better.

3.1 Configure Serial port in PC

To know the COM port name, check the computer‟s Device Manager settings.

The COM port name is displayed in the window. Hyperterminal or Teraterm should be opened and configured accordingly with this COM port name.

The steps for configuring Hyperterminal are shown below.

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Open Hyperterminal

Baud Rate: 115200 bps, Data bits: 8, Parity: None, Stop bits: 2, Flow Control: None

Other baud rates are not currently supported.

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Click on ASCII Setup

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Complete the settings as shown below and click OK.

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Teraterm can also be used. The steps for configuring Teraterm are shown below.

Open Teraterm.

Configure COM port settings

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Complete the settings as shown below and click OK.

3.2 Configure Serial Port Monitor in the PC

The actual bytes exchanged between the module and the Host PC may not all be readable on Hyperterminal or Teraterm because of ASCII conversion. A serial port monitor1 can be used to see the actual bytes. A free package is available at http://www.serial-port-monitor.com/ , while other similar software such as Hterm, Docklight etc. also provide good interfaces to simultaneously view ASCII and actual bytes exchanged in the UART interface. The following sections assume that HHD Free Serial Port Monitor has been installed from the above link.

Open the “HHD Free Serial Port Monitor” BEFORE opening the Hyperterminal or Teraterm. Click on File -> New Session. Select “Serial

Port Monitor”. Select the appropriate COM port and “Request view” for

the display format.

Redpine Signals Inc. assumes no liability for damages of any kind resulting from

use of third party software.

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All bytes exchanged through the UART interface will now be visible on the monitor.

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Redpine Signals RSWC301 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual