DIGI WVA User manual

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Wireless Vehicle Bus Adapter (WVA)

Getting Started Guide

Revision history—90001929

Revision Date Description

E September 2017

F November 2017 Added information for reviewing fault codes in the

G June 2019

H January 2021

J February 2021

Trademarks and copyright

Digi, Digi International, and the Digi logo are trademarks or registered trademarks in the United States and other countries worldwide. All other trademarks mentioned in this document are the property of their respective owners.

Disclaimers

Information in this document is subject to change without notice and does not represent a commitment on the part of Digi International. Digi provides this document “as is,” without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may make improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this manual at any time.

n Updated to new format.

n Edited and updated content.

demo application.

Updated graphics in Network Service

Configuration page descriptions.

Added Anatel information.

Updated Anatel information.

Warranty

To view product warranty information, go to the following website:

www.digi.com/howtobuy/terms

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Documentation feedback: To provide feedback on this document, send your comments to

techcomm@digi.com.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

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Digi Technical Support: Digi offers multiple technical support plans and service packages to help our

customers get the most out of their Digi product. For information on Technical Support plans and pricing, contact us at +1 952.912.3444 or visit us at www.digi.com/support.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Contents

Wireless Vehicle Bus Adapter Getting Started Guide

Features 7 Setting up your Wireless Vehicle Bus Adapter 8

Connect the hardware

Verify product components 10

Optional equipment 10

Communications equipment 10 Recommended CANbus simulator model 11 Connect the WVAto a CANsimulator 11 Connect the WVA to a vehicle's diagnostic port 12 Remove the WVA from the diagnostic port 13 WVALEDs 14

Power LED 14

User-defined LED 14

Connect to the WVA

Connect to the WVA from a smart phone or tablet 16 Connect to the WVAfrom a laptop 16

Access and use the WVA web interface

Apply and save changes 19 Cancel changes to configuration settings 19 Open the web interface 19 Upload a file to the WVA 20

Configure the WVA

Configure wireless settings 22

Configure WVA for Wi-Fi Infrastructure mode 22

Configure WVA for Wi-Fi Direct 24 Configure CANbus baud rate (CANbus simulator use only) 27 Configure Python programs 28

Start or stop an already configured Python application 29

Determine whether Python applications are running 30 Configure network services 30

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure power management settings 31

About power management 33 Enable Remote Manager connectivity (optional) 33

Manage the WVA device

Rediscover the WVA 36 Reboot the WVA 37 Reset the WVAto factory defaults 37 Disable and enable the factory reset button 37

Disable the factory reset button 37

Enable the factory reset button 37 WVA filesystem and file management 37

Access/Browse the filesystem from device interfaces 38 View the system log 38

Log files and contents 39 View status information 42

Deployment decisions

Default behavior regarding time 43 Default behavior regarding Wi-Fi network connectivity 43 Default behavior regarding Remote Manager connectivity 43 Default behavior regarding IP address assignment 43

WVA web interface page descriptions

Adapter Status page descriptions 46 CANBus page descriptions 47 Device Information page descriptions 47 File Management page descriptions 49 Network Service Configuration page descriptions 50 Power Management Configuration page descriptions 51 Python Configuration page descriptions 52

Run the WVAdemo application

Get started 54 Learn the demo application software features 54 Build your own application 54 Download the demo application 54 Start the demo application and discover WVA devices 55

Discover the WVA 56 Connect to the WVA 56

Optional: Manually connect to the WVA 57 Review the demo application dashboard 57 Show graph view 58 Configure endpoints: subscriptions and alarms 58

Subscribe to an endpoint 59

Configure an endpoint as an alarm 61

Delete an alarm 63 Change application settings 64 Review fault codes 65

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Demo application issues 67

Demo application error messages 68

Demo application: Wi-Fi hotspot issues 68

Demo application: user login fails 68

Demo application: Connection Refused error (ECONNREFUSED) 69

Demo application: Connection has gone away error 69

Troubleshooting

Power LED is dark 72 Device is not discovered by Digi Device Discovery 73 Cannot open web interface or access web services 75 Cannot receive data from the CANbus 76 WVA does not connect to an access point 77 Wi-Fi access issues 78 Cannot discover device using Wi-Fi Direct 79 Cannot associate with WVA over Wi-Fi Direct in push-button mode 80 Cannot associate with WVA over Wi-Fi Direct in PIN mode 81 Wireless signal strength issues 82

Regulatory information

Anatel 83

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Wireless Vehicle Bus Adapter Getting Started Guide

The Wireless Vehicle Bus Adapter (WVA) is a telematics component that makes vehicle bus data available through wireless communication. Using Wi-Fi, the WVA connects to other intelligent devices or routers as a client, host, or through a Wi-Fi Direct connection. The WVA can accommodate vehicle bus data in J1939/CAN or J1587/J1708 form.

You can use the WVA in a desktop development environment with a CAN bus simulator, and can install it in a vehicle by plugging into the vehicle's diagnostic port.

The WVA provides an option for wireless connectivity within the vehicle cab as an alternative to wired installation process. If you already have a system that includes an on-board computer (OBC) with Wi-Fi capabilities in your vehicles, you can integrate the WVA into your existing system. If you have not yet installed an OBC in your vehicles, you can use a smart phone, tablet, or rugged display combined with a custom application to interact with the WVA.

Features

n Embedded Wi-Fi with b/g/n Internet speeds

n Standard Deutsch 9-pin diagnostic port connector

n Two J1939/CAN vehicle bus interfaces

n J1587/J1708 vehicle bus interface

n LEDs to indicate power and user-defined functions in applications

n 12 VDC power through a vehicle diagnostic port; can be powered directly from the vehicle

n Basic power management

n Custom buzzer for driver alerts

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Wireless Vehicle Bus Adapter Getting Started Guide Setting up your Wireless Vehicle Bus Adapter

n Web interface for configuration and management, password-protected

n Web services, a RESTful programming interface to vehicle data, password-protected

For detailed hardware specifications, see the Hardware topic of the Wireless Vehicle Bus Adapter (WVA)

Application Developer's Guide.

Setting up your Wireless Vehicle Bus Adapter

This Getting Started Guide walks you through the steps to set up your Wireless Vehicle Bus Adapter. These steps include:

1. Connect the hardware

2. Evaluate deployment decisions

3. Connect to the WVA

4. Configure the WVA

5. Run the WVAdemo application

In addition, the Troubleshooting section provides troubleshooting tips.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware

You can use the WVA for desktop development with a CAN simulator, or plug it into a vehicle's diagnostic port.

Follow the steps in this section to connect the WVA hardware.

Verify product components 10 Recommended CANbus simulator model 11 Connect the WVAto a CANsimulator 11 Connect the WVA to a vehicle's diagnostic port 12 Remove the WVA from the diagnostic port 13 WVALEDs 14

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware Verify product components

Verify product components

The Wireless Vehicle Bus Adapter includes the following components. Make note of any missing or damaged item and contact your supplier.

Wireless Vehicle Bus Adapter QR code label

Optional equipment

You can order the following equipment separately, if needed.

CAN bus simulator and optional recommended cabling for

connecting to the computer.

Note This part is not sold by Digi International Inc. See

Recommended CANbus simulator model for ordering

information.

Wiring harness

Digi part number 76000931

Communications equipment

You will need a mobile device to interact with the WVA, such as a laptop, tablet or smart phone.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware Recommended CANbus simulator model

Recommended CANbus simulator model

For the CAN simulator, Digi recommends the following model and part number, which you can order from the AU Group Electronics on-line store:

n Model: Au SAE J1939 Simulator-Gen II 1.00A (Engine Basic Edition)

n Part number: SIMJ1939-001

The CAN simulator connects directly to the WVA wiring harness.

You can also purchase cabling to connect the CAN simulator to a PC from AU Group Electronics.

Connect the WVAto a CANsimulator

Follow this process to connect a WVA device to a CAN simulator.

Note You can skip this process if you are connecting the WVA to a vehicle. See Connect the WVA to a

vehicle's diagnostic port.

1. Before you begin, you should manually set the baud rate for the CANsimulator. See Configure

CANbus baud rate (CANbus simulator use only).

2. Locate the alignment pin on the WVA and the wiring harness.

3. Following the pin alignment indicated by the alignment pin, connect the WVA to the 9-pin

connector of the wiring harness. Locate the locking ring on the base of the WVA and twist it

clockwise to lock in place.

4. On the wiring harness, connect the wiring leads labeled CAN J1939 or J1708 to the BUS

connector of the CAN simulator, following the CAN simulator’s installation instructions. The

image shows only one CAN connection. Connect additional J1939/CAN or J1587/J1708 leads as

required.

CAUTION! Do not allow bare wires of the wiring harness to touch the CAN simulator. Touching the bare wires to the CAN simulator can cause a short circuit which can damage the CAN simulator.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware Connect the WVA to a vehicle's diagnostic port

5. Connect the power supply for the cable harness to a power source.

CAUTION! When the WVA is being used with a CAN simulator, please note that its baud rate must be manually set to 250000. Failure to set the baud rate to 250000 results in a baud rate mismatch, which impacts vehicle bus data. An indicator that the baud rate is set wrong is the apparent absence of vehicle data. See Configure CANbus baud rate

(CANbus simulator use only) and Cannot receive data from the CANbus.

Connect the WVA to a vehicle's diagnostic port

Follow this process to connect a WVA to a vehicle's diagnostic port.

Note You can skip this process if you are connecting a WVA device to a CAN simulator. See Connect the

WVAto a CANsimulator.

The WVA is compatible with 9-pin diagnostic ports only.

1. Consult the vehicle’s owner’s manual to locate the diagnostic port of the vehicle.

2. Locate the alignment pin on the WVA and diagnostic port.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware Remove the WVA from the diagnostic port

3. Connect the WVA to the diagnostic port. Twist the WVA locking ring clockwise to lock.

Remove the WVA from the diagnostic port

You can remove the WVA from the diagnostic port in a vehicle.

1. Twist the WVA locking ring counterclockwise.

2. Pull the WVA from the diagnostic port.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect the hardware WVALEDs

WVALEDs

The WVA has several LEDs on the top of the device:

Power LED

n Off (dark): No power. For more information, see Power LED is dark.

n Solid green: The device is powered.

Note The WVA must be powered on and able to connect with a wireless network to work as

expected. You can confirm that the WVA can connect to a wireless network in the Network Connectivity Status section in the Device Information page in the web interface. For more

information, see Device Information page descriptions.

n Blinking green: An update of the firmware for the device is in progress.

User-defined LED

The user-defined LED allows you to set LED functionality as needed for your particular application. By default, this LED is not enabled.

For more information on programming the user-defined LED, see the Wireless Vehicle Bus Adapter

Application Developer's Guide.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect to the WVA

After you have connected the WVA to a CAN simulator or plugged it into a vehicle's diagnostic port, you can connect to the WVA from a smart phone, tablet, or laptop. This enables you to configure the WVA settings, view device status, perform firmware updates, and view a log of system events.

Connect to the WVA from a smart phone or tablet 16 Connect to the WVAfrom a laptop 16

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect to the WVA Connect to the WVA from a smart phone or tablet

The WVA has several default startup and operation behaviors that should be considered in your own network's setup and operation. For more information, see Deployment decisions.

Note You will need the QR code label included in the WVA packaging to connect to the WVA. Make sure

you have access to this label before you begin.

Connect to the WVA from a smart phone or tablet

Connecting to the WVA from a smart phone or tablet requires a QR code reader. If you do not already have a QR code reader available on your phone or tablet, download one for your mobile device or tablet.Digi recommends the QR code reader by Scan, Inc.

1. From your smart phone or tablet, download a QRCode Reader if you do not have one available.

a. Navigate to www.scan.me.

b. Click the Download App button to start the download process.

2. Set the WVA to factory defaults. Press and hold the button on the device for at least 10 seconds

to return the gateway to its initial state.

3. With the QR code reader, scan the QR code label shipped with your WVA.

4. A prompt appears, asking whether you want to connect to the WVA. Select Yes. Your device

connects to the WVA access point automatically.

If you are unable to connect to the WVA, see WVA does not connect to an access point.

Connect to the WVAfrom a laptop

Connecting to the WVA from a laptop requires the network security key from the QR code label included in the WVA packaging.

1. Set the WVA to factory defaults before starting this procedure. Press and hold the button on

the device for at least 10 seconds to return the gateway to its initial state.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Connect to the WVA Connect to the WVAfrom a laptop

2. The WVA appears in the list of available network connections as a wireless network access

point. The access point has a default name derived from the serial address for the device in this

format: wva-mac-address.

On the laptop, search the list of network connections for the access point name wva-mac-

address. For example: wva-00:40:4d:41:88:81

3. Select the access point name and click Connect to connect to the WVA as a wireless access

point. If you do not see the WVA in the connections list, or cannot connect to it, see WVA does

not connect to an access point.

4. Enter the network security key. This network security key is labeled PASS on the QR code label

in the WVA packaging.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Access and use the WVA web interface

The WVA has a web interface for configuring device settings, viewing device status, performing firmware updates, and viewing a log of system events.

See the topics below for more detailed information:

Apply and save changes 19 Cancel changes to configuration settings 19 Open the web interface 19 Upload a file to the WVA 20

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Access and use the WVA web interface Apply and save changes

Apply and save changes

The web interface runs locally on the device, which means that the interface always maintains and displays the latest settings in the Digi device. On each screen, clicking Apply saves any configuration changes to the Digi device.

Cancel changes to configuration settings

Click the Refresh or Reload button on the web browser to reload the page. Any changes made since the last time you clicked the Apply button are reset to their original values.

Open the web interface

Use the WVA web interface to configure device settings, view device status and system settings, and perform firmware updates.

Note Before you can open the web interface, you must connected to the WVA. For more information

see Connect to the WVA.

1. Go to a browser and access the web interface using the default IP address for the WVA access

point: 192.168.100.1

2. The first time you attempt to access the WVA, a certificate management prompt appears. Click

Proceed Anyway.

3. A login prompt appears.

n For username, enter admin.

n For password, enter admin.

Note You can change the password from the default at a later time on the Configuration >

Admin Password page.

4. The Device Information page appears. This page is also known as the Home page. You can

return to it at any time in the interface by clicking Home in the menu on the left side. For

information about the sections in the Device Information page, see Device Information page

descriptions.

Note If you cannot open this page for the WVA, see Cannot open web interface or access web

services.

5. You can make the configuration changes as needed by clicking a menu option in the left-hand

pane. When a change is made, click Apply to save any changes to the WVA device. For more

information, see Apply and save changes.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Access and use the WVA web interface Upload a file to the WVA

Upload a file to the WVA

In the File Management page, you can manage custom applications, their associated data files, and other files. You can also push firmware upload files to the device filesystem, pull log files from the device filesystem, and load files onto the WVA. The File Management page also displays current information about loaded files.

For more information about the File Management page, see File Management page descriptions.

This process explains how to upload files to the WVA, such as a Python script.

1. Open the WVA web interface. For instructions, see Open the web interface.

2. Click the Administration > File Management link in the WVA web interface. The File

Management page appears.

3. Click the Browse button to locate the file on your computer that you want to upload to the

WVA.

4. Click Update file to begin the file upload process.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA

You can configure settings for the WVA in the web interface. You must first connect to the WVA. See

Connect to the WVA and Open the web interface to get started.

Once you have accessed the web interface, you can configure the WVA settings. The following topics describe how to configure your WVA’s wireless settings and perform other set up and management tasks.

Configure wireless settings 22 Configure CANbus baud rate (CANbus simulator use only) 27 Configure Python programs 28 Configure network services 30 Configure power management settings 31 Enable Remote Manager connectivity (optional) 33

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure wireless settings

Configure wireless settings

Configure the WVA's wireless settings from the web interface to establish the wireless network method.

Choose one of the following wireless network communication methods:

n As an access point. Wireless communication is possible with an access point that uses the

default IP address, an SSID, and a pre-shared key. The access point is always accessible at the

address 192.168.100.1 when devices connect to it.

n As a client device in a wireless network infrastructure: You must set up this type of

configuration for each type of wireless network in which you want the WVA to operate. The

web interface has a wizard for configuring the WVA as a client device. By default, when the WVA

connects to another access point as a client, which it can do in parallel with devices connecting

to it as an access point, it gets its IP address via DHCP. IP address assignment via DHCP is

enabled by default. For instructions on configuring the WVA as a client device, see Configure

WVA for Wi-Fi Infrastructure mode.

n Using Wi-Fi Direct. Wi-Fi Direct is a Wi-Fi standard that enables devices to connect easily with

each other without requiring a wireless access point and to communicate at typical Wi-Fi

speeds. Wi-Fi Direct requires a one-time configuration for WVA units, where you set how the

WVA user establishes a Wi-Fi Direct connection: by pressing the button on the WVA, or by

entering a PIN. After this configuration, users establish a Wi-FI Direct connection by a button

press or entering a PIN. In Wi-Fi Direct mode, the default IP address is 192.168.43.1 when

devices connect to it. For instructions on configuring the WVA to use Wi-Fi Direct, see Configure

WVA for Wi-Fi Direct.

CAUTION! Switching the WVA to Wi-Fi Direct mode disables access point mode. This means the only way that you can access the WVA is through a device supporting Wi-Fi Direct. If you cannot access the WVA, reset the device to factory defaults. For more information, see Reset the WVAto factory defaults.

Configure WVA for Wi-Fi Infrastructure mode

To configure the WVA as a client device in a wireless network infrastructure:

1. Open the web interface.

2. In the web interface, go to Configuration > Wireless Network.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure wireless settings

3. The Wireless Network Configuration page appears. In the Interface Availability

Configuration section, click Infrastructure.

4. The Wi-Fi Infrastructure Wizard appears.

a. The wizard scans for available wireless networks, and displays them in a list.

b. Click Apply.

5. Select the security mode and enter the associated parameters for the security mode. If you do

not know these values, contact your network administrator. The default security mode for the

WVA is WPA-PSK.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure wireless settings

6. When the wizard completes, the WVA connects as a client to the wireless network you selected

in step 4. The WVA gets its IP address via DHCP.

Configure WVA for Wi-Fi Direct

To configure the WVA for access by Wi-Fi Direct:

1. Open the web interface.

2. In the web interface, go to Configuration > Wireless Network. The Wireless Network

Configuration page appears.

3. Under Interface Availability Configuration, click Wi-Fi Direct.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure wireless settings

4. The Wi-Fi Direct Wizard launches. The wizard prompts you for a device name and the method

for establishing the Wi-Fi Direct connection.

a. In the Device Name field, enter an identifier associated with the WVA. The

recommended name is the fleet ID for the vehicle, such as truck326:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure wireless settings

b. In the WPS Method field, select the Wi-Fi Protected Setup (WPS) method that Wi-Fi

Direct users will use to connect to the WVA. Options are:

n Push Button: Configures the Wi-Fi Direct connection to be established by a

user pressing the WVA button. The Push Button method establishes the Wi-

Fi Direct connection from the phone/tablet side with no data entry required.

Because most phone/tablet devices remember the connection, the

connection needs to be established only once. However, users must locate

the WVA in the vehicle to press the button, which can be difficult to do in

some vehicles.

n Enter PIN: Configures the Wi-Fi Direct connection to be established by a user

entering a PIN on the connecting device (phone or tablet). Using the Enter

PIN method eliminates the need to locate the WVA in the vehicle to press

the button. However, it requires users to enter the PIN from the connecting

device every time the user accesses the WVA.

n WPS PIN: Selecting a value for the WPS Method option displays the next

field, WPS PIN. This is the PIN users enter to establish the Wi-Fi Direct

connection. This PIN is an eight-digit code. Enter the first seven digits of the

PIN. The eighth digit is calculated and displayed.

n Checking the Reconfigure IP addresses for Wi-Fi Direct checkbox forces

the WVA's IP addressing to a mode that always works for Wi-Fi Direct. Digi

recommends keeping this checkbox check.

5. Click Finish to complete the wizard.

6. When the wizard completes, if a reboot is required, click Reboot to complete the configuration.

The WVA enables Wi-Fi Direct mode and is configured with a default IP address of 192.168.43.1

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure CANbus baud rate (CANbus simulator use only)

Note The settings on the Wireless Access Point page are advanced settings, intended for

experienced WVA users only. Take care in changing settings on that page, as they can invalidate standard Wi-Fi settings.

Configure CANbus baud rate (CANbus simulator use only)

If you are using the WVA connected to a CAN simulator, you need to configure the CAN bus baud rate.

CAUTION! When connected to a CAN bus with multiple active devices, such as in a vehicle, the WVA can automatically select the CAN bus baud rate. However, when connected to a single device, such as the recommended CAN simulator for the WVA, specifying the baud rate is necessary to prevent a baud rate mismatch.

To configure the CAN bus baud rate, follow these steps:

1. Open the WVA web interface.

2. In the web interface, go to Configuration > CAN Bus. There are two groups of settings for the

two CAN bus interfaces.

3. In the CAN Bus 1 Settings section:

a. Verify that the Enable CAN Bus option is selected.

b. Change the Baud Rate setting from its default, Auto Baud, to 250000.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure Python programs

CAUTION! If any single device is set to the wrong rate, the entire CAN bus can be affected negatively.

4. If also using the second CAN bus interface, in the CAN Bus 2 Settings section:

a. Verify that the Enable CAN Bus option is selected.

b. Change the Baud Rate setting from its default, Auto Baud, to 250000.

5. Click Apply.

Configure Python programs

You can configure the WVA to automatically run a specified set of Python programs each time the WVA starts up and when the Python applications exit. You access the Python Configuration page in the WVA web interface.

To configure a new Python application in the WVA:

1. Open the WVA web interface.

2. Upload the desired Python file to the WVA device from the File Management page. For

instructions, see Upload a file to the WVA.

3. In the web interface, go to Configuration > Python. The Python Configuration page appears.

The page displays a list of Python processes or applications that are currently configured in the WVA. The status of each process and the action that will be executed when the Python applications exit also appears. The list is empty if no Python processes or applications have been configured.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure Python programs

4. In the Command Line field, enter the name of the Python file to be configured, and any

program arguments.

5. Configure the application to automatically run when the WVA device starts up by clicking the

corresponding checkbox in the Enable column.

Note When you check this option, the Python application also runs when the configuration

changes are saved.

6. In the corresponding Action On Exit combo box, select the action option that should run when

the Python application exits.

n No action taken: Continue device operation without doing anything about the program.

n Restart the application: Restart the Python application.

n Reboot the device: Reboot the WVA.

7. Click Apply to save the changes.

8. After a Python application has been configured, the indicators in the Active column change

color to show the status of the Python application.

n Gray: Application is not running.

n Green: Application is running.

Start or stop an already configured Python application

You can immediately start or stop a Python application that has been configured in the Python Configuration page in the WVA web interface.

Note You must have previously configured a Python application in the Python Configuration page.

For instructions, see Configure Python programs.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure network services

1. Open the WVA web interface.

2. In the web interface, go to Configuration > Python. The Python Configuration page appears.

n Immediately stop a Python script: De-select the Enable checkbox that corresponds

to the configured Python application.

n Immediately start a Python script: Select the Enable checkbox that corresponds to

the configured Python application.

3. Click Apply to save the changes.

Determine whether Python applications are running

The colored indicators in the Active column in the Python Configuration page in the WVA web interface indicate whether the corresponding application is running.

Note You must have previously configured a Python application in the Python Configuration page.

For instructions, see Configure Python programs.

1. Open the WVA web interface.

2. In the web interface, go to Configuration > Python. The Python Configuration page appears.

3. View the indicator in the Active column for each configured Python application:

n Green: Application is running.

n Gray: Application is not running.

Configure network services

You can configure network services in the Network Service Configuration page in the WVA web interface. Settings on this page enable or disable common network services on the WVA, and configure the network port on which the service is listening. You can disable network services to improve device security, so the device runs only specifically needed network services.

1. Open the WVA web interface.

2. In the web interface, go to Configuration > Network Services to display the Network

Services page.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure power management settings

3. Enable/disable the network services as needed. See Network Service Configuration page

descriptions for more information about each service and its default TCP port number. It is

usually best to use the default TCP port numbers for these services because they are well-

known by most applications.

4. Click Apply.

Configure power management settings

You can configure power management settings in the Power Management Configuration page in the WVA web interface. With these settings, you can control whether the WVA powers down once it has been determined that the vehicle is not running, and choose from a variety of mechanisms for waking the WVA again. For more detailed information, see About power management.

To configure power management using the web interface:

1. Open the WVA web interface.

2. In the web interface, go to Configuration > Power Management. The Power Management

Configuration page appears.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Configure power management settings

3. The power management service is disabled by default. To enable it, check the Enable Power

Management checkbox:

When Power Management is enabled, all the Power Management settings appear:

4. View and change the power management settings as needed. See Power Management

Configuration page descriptions for information about the settings and defined defaults.

5. Click Apply to save the changes.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Enable Remote Manager connectivity (optional)

About power management

The WVA has a configurable power management service. You can use the power management settings to control whether the WVA powers down ("sleeps") when the vehicle is not running, and choose from a variety of mechanisms for waking the WVA again. During the time the WVA is sleeping, its power consumption is dramatically reduced, which prevents the device from draining the vehicle battery.

When you enable power management, the WVA detects that the engine is not running, then waits a specified amount of time and goes to sleep. The specified time is configurable and can be delayed if there is an important operation on the vehicle. Instances where a delay would be desirable include:

n To allow a web services-based application to interact with the device (and, in a sense, the

vehicle) for a certain period of time after no engine activity.

n To reduce the latency involved in responsiveness while the WVA boots if the vehicle is only shut

off for a brief period. For example, if the vehicle were turned off and then back on quickly, such

a delay could cause the WVA to avoid its own boot time by simply staying awake.

You can configure the WVA to wake under one or more of the following conditions:

n When a configurable timer expires.

n When the alternator is generating power.

n When the WVA detects sufficient vibration; for instance, slamming the driver door or starting

the engine.

n When a user presses the WVA button.

The power management service is integrated with the standard device settings. There are two ways to configure these settings:

n Using the settings on the Power Management Configuration page. See Configure power

management settings.

n Through the WVA web services. See Wireless Vehicle Bus Adapter Application Developer's Guide

for more information on web services.

Enable Remote Manager connectivity (optional)

By default, the connectivity of the WVA device to Remote Manager for remote device management is disabled.

Digi Remote Manager® connectivity is typically only available when the WVA is in Infrastructure mode, operating as a Wi-Fi client, and the device acting as the access point for the WVA forwards traffic to the Internet.

Note To serve our customers most effectively, Digi International Inc. is consolidating its cloud

services, Digi Device Cloud and Digi Remote Manager®, under the Remote Manager name. This phased process does not affect device functionality or the functionality of the web services and other features. However, you will find instances of both Device Cloud and Digi Remote Manager in some documentation, firmware, and user interfaces.

To enable Remote Manager connectivity:

1. If enabling Remote Manager, you must set the WVA real-time clock through web services. See

Default behavior regarding time. An example of setting time via web services is included in the

WVA demo application.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Configure the WVA Enable Remote Manager connectivity (optional)

2. Open the WVA web interface.

3. In the web interface, go to Configuration > Device Cloud Connectivity. The Device Cloud

Configuration page displays.

4. Select the Enable Device Cloud Connectivity option. Do not change the default values in the

dialog.

5. Click Apply.

6. When Remote Manager connectivity is enabled, several network connection states are added

to the Network Connectivity Status list on the Device Information page. For descriptions of

each option, see Device Information page descriptions.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device

The topics in this section explain how to manage the WVA devices.

Rediscover the WVA 36 Reboot the WVA 37 Reset the WVAto factory defaults 37 Disable and enable the factory reset button 37 WVA filesystem and file management 37 View the system log 38 View status information 42

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device Rediscover the WVA

Rediscover the WVA

To determine the IP address of a WVA connected to a network in Infrastructure mode, you can use the Digi Device Discovery Utility to rediscover the device.

1. Download the Digi Device Discovery Utility.

a. Access the WVA Support Services page.

b. Scroll down to the Support Downloads section.

c. Click Diagnostics, Utilities & MIBS to expand that section of the page.

d. Search for "Wireless Vehicle Bus Adapter".

e. Click the Wireless Vehicle Bus Adapter option when it appear in the All Products

window. The Wireless Vehicle Bus Adapter (WVA) product support page appears.

f. From the Operating System Specific Utilities list box in the Diagnostics, Utilities

& MIBS section, select your operating system. A list of options appears in the

Operating System Specific Diagnostics, Utilities and MIBs section.

g. Click on the desired option to download the utility.

2. Run the Digi Device Discovery Utility from your PC’s Start Menu: Start > Digi > Digi Device

Discovery > Digi Device Discovery. The Digi Device Discovery window appears.

3. In the Digi Device Discovery device list, locate your WVA in the list of devices by matching the

MAC Address on your WVA label to the corresponding value in the MAC Address column.

4. Use one of the following methods to open the web interface for the device:

n Double-click the device.

n Select the device, and choose Open web interface from the Device tasks section.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device Reboot the WVA

Reboot the WVA

You can reboot the WVA device from the WVA web interface.

You may need to reboot the WVA if you have lost your network connection and are unable to reconnect to the network. When you reboot, you will lose any CAN traffic information that occurs during the reboot process.

1. Open the WVA web interface.

2. In the Device Information (Home) page, choose Administration > Reboot.

Reset the WVAto factory defaults

In some situations, you may need to reset the WVA to factory defaults. For example, if you reboot the

WVA and it doesn't recover, you can reset the WVA to force it to recover.

A factory reset clears all custom configuration settings since the device was last reset. After the reboot, you must reenter and reapply any configuration settings unique to your device.

To reset the WVA to factory defaults, press and hold the button on the top of the WVAfor 10 seconds.

Note You can disable the factory reset by button press, if needed. For instructions, see Disable and

enable the factory reset button.

Disable and enable the factory reset button

If desired, you can disable the factory reset by button press. Once you have disabled this feature, you will not be able to reset the WVA to factory defaults. You can re-establish this feature by enabling the factory reset button.

You can use the WVA web services configuration resource config/button to disable and enable the factory reset button.

See the description of this resource in the Wireless Vehicle Bus Adapter (WVA) Application Developer

Guide.

Disable the factory reset button

Set the config/button resource to "none" to disable.

<reset_to_factory>none</reset_to_factory>

Enable the factory reset button

Set the config/button resource to "default" to re-enable.

<reset_to_factory>default</reset_to_factory>

WVA filesystem and file management

The WVA has a Linux-based filesystem.

Two directory folders are available:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device View the system log

n The /WEB/python/ directory is for user-specific files, such as custom applications. This area is

read-write and you can add additional files as needed for your application.

n The /WEB/logging directory is read-only and contains system log files, including eventlog.txt,

python.log, and digi.log. For more information on these files, see View the system log.

For more information on the filesystem, see the Filesystem interfaces topic in the Wireless Vehicle Bus

Adapter (WVA) Application Developer Guide.

Access/Browse the filesystem from device interfaces

There are several ways in which you can interact with the filesystem on the WVA:

n File Management page in the web interface. See File Management page descriptions.

n Remote Manager File Management functions. See Enable Remote Manager connectivity

(optional).

n Web services filesystem interfaces. These resources are used to browse and create directories

and manipulate files. See Configure network services.

n The web interface when performing several operations, including firmware updates and

backup/restore operations. See WVA web interface page descriptions.

View the system log

The System Message Log File Browser in the WVA web interface is a diagnostic tool that allows you to view entries in a system log file. The default log file that you can view from this browser is eventlog.txt. This file is the primary message log for informational notices.

Logging is always enabled and is not user-configurable. When the WVA operates in an unexpected manner, the log entries can be sent to Digi for analysis by Technical Support and Engineers. The event log cannot be turned off, to ensure that Digi receives an accurate view of all aspects of the operation of the device.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device View the system log

Log files and contents

There are other system log files that are available for debugging specific parts of the system. These log files have a fixed size and roll over when the maximum size is reached. When the file rolls over, a single secondary file is created with the extension .0 . For example, when eventlog.txt rolls over, the older data will be stored in file eventlog.txt.0. When both files reach their maximum size, the older file is overwritten.

Many of the log files are stored in persistent memory (flash) and contain data from multiple boots.

Log file Contents

eventlog.txt eventlog.txt.0

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

High-level system messages.

Manage the WVA device View the system log

Log file Contents

python.log python.log.0

digi.log digi.log.0

messages.log messages.log.0

cherokee.log cherokee.log.0

The options in the Message Filters for Displayed Log File section allow Digi Technical Support working with customers on troubleshooting issues to more quickly focus on areas of interest in the log file as needed.

To view these other log files in the System Message Log File Browser page, enter the file name in the field below Log File and click Get File. Or, or select Other log; enter the desired log file, and click Get File. The following example shows digi.log being selected and the messages in digi.log.

Note that digi.log involves several more message filters:

Captures any output of Python programs that were started with the Python auto-start feature.

For internal use only. Digi Technical Support may request that you send this file when assisting you with troubleshooting.

For internal use only.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device View the system log

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Manage the WVA device View status information

View status information

Several pages in the WVAweb interface indicate device status information.

n Network Connectivity Status section in the Device Information (Home) page. For detailed

information, see Device Information page descriptions.

n Adapter Status page. This page includes information about the wireless network and vehicle

status. Choose Administration > Adapter Status to display the page. For detailed information

about the options in this page, see Adapter Status page descriptions.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Deployment decisions

The WVA has several default startup and operation behaviors to be considered in your own network's setup and operation. If these behaviors present any conflicts with your network's configuration and operation, you may need to make adjustments to the WVA or the network.

Default behavior regarding time

The WVA has a real-time clock. This clock must be set using the web services interface resource hw/time by the connected device (phone, tablet, PC). See the description of the hw/time resource in the Wireless Vehicle Bus Application Developer's Guide.

For information about accessing the web services interface, see Access and navigate the web services section in the Wireless Vehicle Bus Application Developer's Guide.

When disconnected from a power source, either in a desktop environment or a vehicle's diagnostic port, the real time clock keeps its time for two hours. After that point, the time is lost and the real time clock must be reset.

As long as the WVA is installed in the vehicle, you can assume the WVA clock is accurate. Once the WVA is disconnected from the vehicle and not powered by any other source, some drift in the time can occur.

Note that in any application code developed for the WVA, the system time must be set by the hw/time resource before any firmware update operations.

Default behavior regarding Wi-Fi network connectivity

To ensure that you can easily connect to the WVA device during initial configuration, the WVA Wi-Fi is temporarily in access point mode.

The SSID for the WVA access point is wva-mac-address. It is strongly recommended that the WVA be configured to communicate in your local wireless network. See Configure wireless settings.

Default behavior regarding Remote Manager connectivity

The WVA's connection to Remote Manager is disabled by default. You can enable Remote Manager if needed. For more information, see Enable Remote Manager connectivity (optional).

Default behavior regarding IP address assignment

IP addresses that the WVA uses depend on the network type:

n IP address of the Wi-Fi access point interface: The access point is accessible at the address

192.168.100.1 when the WVA is in Infrastructure mode.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Deployment decisions Default behavior regarding IP address assignment

n IP address of the Wi-Fi client interface: By default, when the WVA connects out to another

access point in Infrastructure mode, it gets its IP address via DHCP. The WVA can do this in

parallel with devices connecting to it as an access point. The IP address assignment via DHCP

is enabled by default.

n IP address in Wi-Fi Direct mode: The default IP address in Wi-Fi Direct mode is 192.168.43.1.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions

You can find information about the options in the WVA web interface pages in this section.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Adapter Status page descriptions

Adapter Status page descriptions

You can view information about the wireless network and vehicle status in the Adapter Status page.

The following table describes each of the options in the Adapter Status page.

Current Wireless Networks Status section

The items in this section show the status of the wireless connection.

Status field Description

Configured SSID The configured wireless network access point for the device.

Active SSID The active wireless network access point being used by the device.

Access Point

Signal Level The average power measurement of frames that the WVA receives

Link Quality An indicator of the quality of the wireless signal, taking into account

If the WVA is currently connected to a wireless network access point, this field contains the MAC address of the access point to which the WVAis connected.

from the access point, in dBM. See Wireless signal strength issues for troubleshooting information.

n Excellent: A signal level from -40 to -30 dBm.

n Good: A signal level from -60 to -70 dBm is good.

n Poor: Any signal level lower than -75 dBm.

background noise. Link quality is usually displayed as a fraction with 70 being the denominator; for example, 47/70. The larger the numerator, the better the signal. A signal quality of 70/70 indicates a perfect signal, while 10/70 indicates a poor one.

Current Vehicle Status section

This section includes status items about the vehicle or simulated vehicle to which the WVA is connected. These values are set when the page appears and are not dynamically updated.

Status field Description

VIN

Engine Speed

Vehicle Speed

CAN Bus Statistics

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Vehicle identification number.

The current speed of the vehicle's engine, in RPM.

The current speed of the vehicle, in KPH.

The number of bytes/packets sent and received from each CAN bus. This section of the status display should be updating while the vehicle is running. You can use this section to verify that the connection from the WVA to the CAN bus is correct.

WVA web interface page descriptions CANBus page descriptions

Status field Description

Refresh Once Click Refresh Once to immediately update the status information in

the screen.

Refresh Automatically Click Refresh Automatically to automatically update the status

information in the screen every 5 seconds.

CANBus page descriptions

The following table describes each of the sections in the CAN Bus page. You can configure up to two CAN bus devices. The options in each section are the same.

For configutation information, see Configure CANbus baud rate (CANbus simulator use only).

Note For vehicle use, the baud rate should always be Auto Baud, which is the default.

Item Description

Enable CANBus Select this option if you are using a CANbus device.

Baud Rate Select the correct baud rate.

n Auto Baud: This is the default. For vehicle use,

n 250000: Select this option if you are using a

Device Information page descriptions

The following table describes each of the sections in the Device Information (Home) page.

For more information about this page, see Open the web interface.

the baud rate should always be Auto Baud.

CANbus device.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Device Information page descriptions

Item Description

Home link Click Home in the menu on the left side to return to the

Device Information page.

Current System Status

Summarizes current system parameters and network connectivity status.

Network Connectivity Status Indicates the readiness of the WVA to communicate in

a wireless network using a colored indicator. Options are:

n Orange: Not ready

n Green: Ready

Refresh button Click Refresh to refresh the information on the page.

Configuration menu

Displays pages for configuring settings for various features. Some configuration settings are organized on sets of linked screens. The choices in this menu may vary based on product and supported features.

Administration menu

Displays pages for common device administration tasks.

The Network Connectivity Status bar display includes a list of status indicators.

If Remote Manager connectivity is not enabled, the status conditions are as follows:

If Remote Manager connectivity is enabled, the status conditions are as follows:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions File Management page descriptions

Note For information about enabling Remote Manager connectivity, see Enable Remote Manager

connectivity (optional).

Status field Description

Network interface detected

Connected to local network

IP address assigned

Prepared to contact Device Cloud server

Contacted Device Cloud server

Ready for Device Cloud communication

Wi-Fi AP or Ad-Hoc network detected. Connecting to WiFi. Waiting for association.

Connected to Wi-Fi. Establishing LAN connection. Waiting for IP address.

An IP address has been assigned to the gateway. Connected to Wi-Fi network.

The device is waiting for Remote Manager service to take control, and for DNS resolution of server chosen by the Remote Manager service; that is, the server specified in the Configuration > Device Cloud Connectivity settings, in the Device Cloud Server field.

The device is establishing a Remote Manager connection. It is waiting for protocol level “connection” with the Remote Manager server, which might include authentication.

The device is connected to the Remote Manager server.

File Management page descriptions

The following table describes each of the sections in the File Management page.

Item Description

Volume information Displays the current directory for loading files and free space

remaining. Digi recommends using no more than 20 MB for custom applications, as the WVA requires a portion of the same space to be capable of managing persistent system logs and firmware updates.

Upload to Current Directory Uploads files to the current directory. Use the Browse button

to find a file on your computer to be uploaded to the WVA. Click Update file to begin the file upload process. For more information, see Upload a file to the WVA.

File List A listing of the “current directory” (as noted in the Volume

Information area) on the device.

Open

Make Directory

Save As

Opens a directory after it is selected in the file list. The “current directory” changes and the file list is updated.

Creates a new, empty directory in the “current directory.”

Downloads a regular file from the filesystem to your local PC.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Network Service Configuration page descriptions

Item Description

Remove Select a file or an empty directory and click Remove to delete

the file or directory.

Refresh Click Refresh to reload all the information on the page.

Network Service Configuration page descriptions

The following table describes each of the sections in the Network Service Configuration page.

For information about configuring this page, see Configure network services.

Network Service setting Services provided

Enable Secure Shell Server (SSH)

Enable Web Server (HTTP)

Enable Secure Web Server (HTTPS)

Reserved for remote device access by Digi personnel for debugging purposes.

HyperText Transfer Protocol (HTTP), also known as Web Server. HTTP provides access to web pages for configuration and web services. HTTP and HTTPS are also referred to as Web Server or Secure Web Server. These services control the use of the web interface. If HTTP and HTTPS are disabled, device users cannot use the web interface to configure, monitor, and administer the device.

HyperText Transfer Protocol over Secure Socket Layer (HTTPS), also known as Secure Web Server. HTTPSuses encryption to improve the security of web data transfers.

Default TCP port number

443

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Power Management Configuration page descriptions

Network Service setting Services provided

Enable Web Services Events

In the web services, the Event Channel is the mechanism for delivering asynchronous, out-of-band data, such as alarms and periodic updates from subscriptions to vehicle data endpoints. For more information about the web services, see the Wireless Vehicle Bus Adapter Application

Developer Guide.

This setting is disabled by default. Set the port number to a value between 1025 and 65535 that is not already assigned to another service. The example below shows the TCP port being set to 5000, which is the TCP port number set in the WVA demo application.

Advanced Device Discovery Protocol (ADDP) Mode

Digi's Advanced Device Discovery Protocol allows devices to be found on a network, regardless of protocol. You can also use ADDP to change network settings, or disable the service completely. There are three settings for this network service:

n Read-Write: Allows discovery of devices and the ability to change

network settings. This is the default setting.

Default TCP port number

n Read-Only: Allows discovery of devices only.

n Off: Turns off the ADDP network service. This setting completely

closes the network port used for device discovery.

Power Management Configuration page descriptions

The following table describes each of the options in the Power Management Configuration page.

For more information about configuring power management settings, see Configure power

management settings.

Section Option Description

Current Settings

Enable Power Management

Enables the Power Management feature and displays all Power Management settings.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Python Configuration page descriptions

Section Option Description

Sleep Settings

Wake on Movement Settings

Wake on Alternator Settings

Wake on Button Settings

Enable Sleep on No Engine Activity

Sleep Delay Timeout: n seconds before sleeping

Enable Wake on Movement

Enable Wake on Alternator Power

Enable Wake on Button Press

Enables or disables the WVA going into sleep mode when no engine activity (RPM=0) is detected. The default is disabled (off).

The number of seconds the WVA should wait before going to sleep when there is no engine activity detected. The default is 120 seconds.

Enables or disables the WVA waking upon detection of vibration, typically a sharp vibration to the vehicle frame. The default is disabled (off).

Enables or disables the WVA waking from sleep mode upon detection of the alternator running on alternator power rather than the vehicle battery. The default is disabled (off).

Enables or disables waking from sleep mode by a button press. The default is disabled

(off).

Note The button press should be momentary

and not a press-and-hold, which could cause the unit to reset to factory defaults.

Periodic Wake Settings

Enable Periodic Wake Enables or disables periodic or timed wake

from sleep mode for the device. The default is disabled (off).

Wake Timer The time, in minutes, for the sleeping WVA to

wait before waking. The time can range from 1 to 1440 minutes (24 hours). The default, if enabled, is 5 minutes.

Python Configuration page descriptions

The following table describes each of the sections in the Python Configuration page.

For more information about configuring Python applications, see Configure Python programs.

Item Description

Enable Click the check box in the Enable column for the Python application

that should run when the WVA device starts up. When you check this option, the Python application also runs when the configuration changes are saved.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

WVA web interface page descriptions Python Configuration page descriptions

Item Description

Command Line The Python application name and any arguments.

Active The indicators in the Active column change color to show the status

of the Python application.

n Gray: Application is not running.

n Green: Application is running.

Action On Exit The action option that should run when the Python application exits.

Options are:

n No action taken: Continue device operation without doing

anything about the program.

n Restart the application: Restart the Python application.

n Reboot the device: Reboot the WVA.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application

Digi provides a demo Android application for the WVA that demonstrates several capabilities available in the WVA and its software.

Get started

Use the topics below to get started using the demo application:

n Download the demo application

n Start the demo application and discover WVA devices

n Connect to the WVA

n Review the demo application dashboard

Learn the demo application software features

After you have connected the demo application to a WVA, you can learn how to use the software features:

n View a live graph view of vehicle speed and engine RPMs. See Show graph view.

n Use the Event Channel to deliver alarms and notifications about the alarms and other events

to the demo application. See Configure endpoints: subscriptions and alarms.

n Configure the demo application settings. See Change application settings.

Build your own application

Digi created the demo application using the WVA Android library. For information on building your own application with this library, see the WVA Android Library Tutorial, available from the Documentation section in the WVA support page.

Download the demo application

1. Navigate to the WVA Product Support page.

2. Scroll to the Software section and click Demo Application: WVA Sample Application,

Android. The demo application is in a .apk file, and downloads automatically.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Start the demo application and discover WVA devices

3. Install the .apk file on the Android device.

There are three installation scenarios:

Install the .apk file from an Android device:

Transfer the .apk file to the Android device via email or USB drive.

Install the .apk file from a Non-Android device:

a. Save the .apk file locally.

b. Transfer the .apk file to the Android device via email or USB drive.

Install the .apk file from the Android OS:

a. Open the .apk file. When downloading directly from an Android device, you can skip

this step.

b. Follow installation instructions on the screen.

4. Once the .apk file is on the Android device, follow the device's standard process for installing

the .apk file.

Note Your security settings on the Android device may block installations of applications that are not

from the Google play store. You may need to modify your security settings to run the application.

When the application installation completes, there are two choices: Done and Open.

n Click Open to start the application immediately. See Start the demo application and discover

WVA devices for more information.

n Click Done to close the application.

n To launch the application later, navigate to the Android device's Home screen, then to the

application drawer, and click the WVA application icon:

Start the demo application and discover WVA devices

After you have installed the demo application, you can run it.

1. Before you run the demo application, verify that the device is connected to the WVA. For data

to be displayed in the WVA demo application, the WVA must be connected to a CAN simulator or

connected to an actual vehicle bus, as described in Connect the hardware.

2. Navigate to the Android device's Home screen.

3. Navigate to the Android device's application drawer.

4. Click the WVA application icon:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Connect to the WVA

Discover the WVA

The first time the WVA demo application is launched, it automatically performs a discovery of all devices on your local network that are discoverable through a Digi-proprietary protocol called ADDP. This is the same type of discovery operation performed in Rediscover the WVA. The discovery operation is indicated by the progress spinner on the screen and action bar. For more information on how the WVA uses ADDP, see the WVA Android Library Tutorial and accompanying ADDP information.

When devices are discovered, the devices appear on the right side of the screen. If no devices are discovered, the message No devices found appears.

To perform another device discovery, click the circular arrows button in the top right corner of the screen.

Connect to the WVA

After you have discovered devices, you can connect to a WVAin the discovered devices list.

Note The code for the WVA demo application can automatically detect when the WVA device closed its

end of the event channel socket. The WVA demo application waits 15 seconds before attempting to reconnect.

1. In the discovered devices list, connect to the WVA by clicking the device name in the device

pane. This opens the dashboard.

Note Alternatively, you can connect to the WVA manually. See Optional: Manually connect to

the WVA.

2. A login prompt appears. For username, enter admin; for password, enter admin. Under

HTTPS Security, in most cases, select Use HTTPS.

Note If the login is unsuccessful, it is possible that the default Network Services setting on the

WVA for Enable Secure Web Server (HTTPS) changed from the default setting (enabled) to use Enable Web Server (HTTP) or is disabled. The demo application and the WVA must sync in their use of HTTPS or HTTP. See Demo application: user login fails.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Review the demo application dashboard

3. When the login completes, if your network is set up properly, the demo application attempts to

initiate a connection to the selected device. Once the connection is initiated, the Review the

demo application dashboard appears.

Optional: Manually connect to the WVA

You can manually connect to the WVA, if you prefer this method over using the discovery method.

1. On the action bar, click the action overflow button:

2. Select Settings. The Applications settings dialog appears.

3. Under Connection Settings, select IP address for manual connection.

4. Enter the IP address of the WVA and click Save.

5. Once the IP address is set, anytime you want to make a manual connection, click the action

overflow button and select Manually connect.

Review the demo application dashboard

The first time the demo application opens, the demo application dashboard is empty. After the application discovers all available data endpoints, and optionally subscribes to them, the dashboard populates with data endpoints.

The dashboard has three panels:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Show graph view

n Vehicle Data: Displays the most recent vehicle bus data for which subscriptions have been

made.

n Event Log: Displays a log of vehicle bus data updates and alarms sent over the Event Channel.

n Alarms and Subscriptions: Displays all vehicle bus data endpoints, which can be subscribed to

or set for alarms.

You can also see a graph view that plots several endpoints. See Show graph view.

Show graph view

The demo application has a graph view. Click the action overflow button and select Show graph.

The graph is built from two vehicle bus data endpoints, VehicleSpeed and EngineSpeed. Whenever any new data for the endpoints come in to the application through the Event Channel, the graph view plots these endpoints.

Note To use the Graph View from the demo application, you must perform a Sync Time operation to

synchronize the WVA system time with the Android device clock. Click the action overflow button and select Sync time.

Configure endpoints: subscriptions and alarms

The dashboard has several options for handling vehicle bus data endpoints:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Configure endpoints: subscriptions and alarms

n Subscribe to an endpoint. You can subscribe to individual endpoints or to all vehicle data

endpoints automatically in the application settings.

n Configure an endpoint as an alarm.

n Delete an alarm.

Subscribe to an endpoint

The following example uses an endpoint named BatteryPotential.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Configure endpoints: subscriptions and alarms

1. In the dashboard's Alarms and Subscriptions panel, select the endpoint.

The Endpoint dialog appears:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Configure endpoints: subscriptions and alarms

2. Subscribe to the endpoint.

a. Select Subscription enabled.

b. In the Interval value, specify the desired number of seconds between updates for

the endpoint.

3. When the endpoint is configured, it appears in the Vehicle Data panel:

Configure an endpoint as an alarm

You can configure an endpoint to act as alarm. When the alarm threshold is met, the alarm appears in the Event Log, and an alarm notification is sent to the Android device's notification drawer.

The following example uses an endpoint named BatteryPotential.

1. In the dashboard's Alarms and Subscriptions panel, select the endpoint.

2. Select Alarm enabled.

3. Select an alarm threshold option.

n Above: When the data exceeds a certain value. A threshold value must also be entered.

n Below: When the data falls below a certain value. A threshold value must also be

entered.

n Change: Any change in value. Selecting Change disables the Threshold field.

n Delta: When the data changes by a certain amount.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Configure endpoints: subscriptions and alarms

For example, this endpoint is configured for an alarm when the value of BatteryPotential

drops below 30:

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Configure endpoints: subscriptions and alarms

4. Click Save. The alarm appears in the Event Log, and an alarm notification is sent to the Android

device's notification drawer.

Delete an alarm

The following example uses an endpoint named BatteryPotential.

1. In the dashboard's Alarms and Subscriptions panel, select the endpoint.

2. Select the endpoint. The endpoint dialog appears.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Change application settings

3. Select Remove alarm.

4. Click Save.

Change application settings

The demo application has several settings and preferences.

To access these settings:

1. Click the action overflow button and select Settings. The Application settings page appears.

2. On the Settings activity, you can configure application preferences such as alarm notification

sound.

The demo app settings are as follows:

n Notifications: Preferences on notifications.

l Alarm tone: The sound played when an alarm is triggered on the device.

n Connection Settings: Settings for network connections.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Review fault codes

l IP address for manual connection: Identifies the IP address that is the destination for a

manual device connection. Once set, the manual connection can be established by

selecting Manual.

l TCP port for events: The TCP network port number used for the Event Channel. The WVA

demo application is set to use port number 5000, but this number can be changed.

n Application Settings: Settings for subscriptions and the Event Log.

l Endpoint auto-subscription: After successfully connecting to a device, there are

essentially two options for subscribing to vehicle bus data endpoints: automatically

subscribe to all available data endpoints, or subscribe to no data endpoints at all. This

option allows you to specify which subscription option should be used. To subscribe to no

vehicle bus data endpoints when the application dashboard is opened, select Don't

subscribe to anything. To subscribe to all vehicle bus data endpoints for a specified

interval, select one of the available time intervals.

l Auto-scroll event log: In the Event Log, new events are displayed at the top of the log. This

setting causes the log display to automatically scroll to the top of the log when new log

events occur.

Review fault codes

After you have connected to the WVA and collected data, you can review the fault codes.

Note You can create alarm conditions on a fault code. See Create an alarm on vehicle data in the WVA

Android Library Tutorial for more information.

1. In the application menu, click Fault Codes.

2. The Fault Code Browser screen displays.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Review fault codes

3. Click on one of the CAN bus headings to query the WVA for the list of ECU units on that CAN

bus. You can click the Refresh icon to update the list.

4. From the list of ECU units, click on the ECU for which you want to inspect fault codes. Fetching

fault code options appear in the right-hand pane.

5. Click Fetch active fault code to query the WVA for the most recently reported active fault

codes. The active fault codes appear on the screen. If there are no active fault codes, the

message "No active fault codes have been reported" displays on the screen.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Demo application issues

6. Click Fetch inactive fault code to query the WVA for the most recently reported inactive fault

codes. The inactive fault codes appear on the screen. If there are no inactive fault codes, the

message "No inactive fault codes have been reported" displays on the screen.

Demo application issues

In some conditions, the demo application has error-handling built in. You can click OK on some to initiate error handling, However, some errors and conditions may require action on your part.

For more information about demo application error messages, see Demo application error messages.

Refer to the following topics for demo application troubleshooting issues:

n Demo application: Wi-Fi hotspot issues

n Demo application: user login fails

n Demo application: Connection Refused error (ECONNREFUSED)

n Demo application: Connection has gone away error

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Demo application issues

Demo application error messages

If any errors occur with the data connection, an error dialog appears. Click OK and the error is handled according to the design of the application.

Failure to connect to device

This error occurs if you cannot connect to the WVA device.

Lost network connection

This error occurs while you are connected to the discovered WVA and the network connection is lost.

Android device not connected to Wi-Fi network

If your Android device is not properly connected to a Wi-Fi network, a message displays indicating that you cannot attempt to connect to the device without first checking your connection: "Must be on Wi-Fi or serving as a hotspot to use this application".

Demo application: Wi-Fi hotspot issues

In the demo application, during the Connect to the WVA step, this message may appear:

Must be on Wi-Fi or serving as hotspot to use this application.

Possible cause

The Android device is not connected to the WVA, or is not in Access Point (mobile hotspot) mode.

Solution

Make sure the Android device is connected to the WVA before trying to connect to the demo application.

Demo application: user login fails

Your user login to the demo application fails.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Demo application issues

Possible cause

n The demo application and the WVA must synchronize their use of security and authentication.

The WVA's Network Services settings for security and authentication may have been changed

from their defaults but the demo application is assuming a use of the defaults.

n There is also a chance that the Secure Web Server (HTTPS) and Web Server (HTTP) network

services have been disabled entirely.

Solution

If possible, review how the Network Services settings for HTTPS/HTTP are set for the WVA in the web interface.

1. Attempt to open the web interface on the WVA.

2. If you can open the web interface, go to Configuration > Network Services. Check the

settings for Enable Secure Web Server (HTTPS) and Enable Web Server (HTTP) and make

these changes in the demo application:

n If HTTPS is on (checked) and HTTP is off (unchecked) (the default), make sure to check

Use HTTPS.

n If HTTPS is off (unchecked), make sure to deselect Use HTTPS.

3. If you cannot open the web interface, both HTTP and HTTPS may have been disabled on the

WVA. In this case, you cannot access a web browser to display and change settings. The only

way to return the WVA to the default setting of HTTP being enabled is to reset the device to

factory defaults. See Reset the WVAto factory defaults.

Demo application: Connection Refused error (ECONNREFUSED)

In the demo application, this connection error appears:

Connection with the WVA device encountered an error: failed to connect to device address (port 5000): Connect failed ECONNREFUSED (Connection Refused)

Possible cause

n The demo application was not able to set the Event Channel port properly.

n The demo application attempted to connect to the named port before the port was set, or

during the approximately 15 seconds the web service daemon requires for restart after setting

the port.

Solution

Try connecting to the WVA again. See Connect to the WVA.

Demo application: Connection has gone away error

In the demo application, you see the following connection error:

Connection has gone away

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Run the WVAdemo application Demo application issues

Possible cause

The Android device has been disconnected from the WVA. The demo application detects that condition owing to a change in the Android device's network state. For example, the Android device was connected to the WVA's Wi-Fi network, but the current state is not connected to Wi-Fi or connected to another network type.

Solution

Try connecting to the WVA again. See Connect to the WVA.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting

See the following topics for assistance if you run into issues with your WVA, such as connectivity problems. If you need further assistance, contact Digi Technical Support at www.digi.com/support.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Power LED is dark

Power LED is dark

The Power LEDon the WVAis dark.

Note For more information about the WVA LEDs, please refer to WVALEDs.

Possible cause

Power is not applied.

Solution

Make sure the power supply is properly connected to a power source and the device.

Possible cause

Hardware failure.

Solution

1. Disconnect the WVAfrom the power source.

2. Reconnect the WVA to the power source.

3. If the Power LED remains dark, return the WVAto your supplier.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Device is not discovered by Digi Device Discovery

Device is not discovered by Digi Device Discovery

Possible cause

Another device user may have disabled the Device Discovery Service (ADDP) network service.

Solution

Check the Network Services settings. In the web interface, go to Configuration > Network Services and check the Device Discovery Service (ADDP) Mode setting.

If the setting is Off, change it to either Read-Write (enable Device Discovery Service and allow network settings to be changed) or Read-Only (enables Device Discovery Service only) and click

Apply.

Possible cause

Firewalls, either software or physical, are in place.

Solution

Make sure that any software firewalls are disabled, as software firewalls can block the discovery process. Any physical firewall will almost certainly block the discovery process.

Possible cause

A router between the computer running the Digi Device Discovery utility and the WVA. Normally, routers will block the discovery process.

Solution

If possible, remove any routers between the computer and the WVA and use a hub instead.

Possible cause

A switch between the computer and the WVA the Digi Device Discovery utility is configured to block the discovery traffic.

Solution

Occasionally switches are configured to block the discovery traffic. If unsure, use a hub or a direct Ethernet cable connection.

Possible cause

Bad port on your router/switch/hub.

Solution

Try using a different port.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Device is not discovered by Digi Device Discovery

Possible cause

Unknown.

Solution

If you have a second Digi device, try discovering it instead to see if you have the same problem. Though it may not solve your original discovery problem, it should provide you with some additional troubleshooting clues.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Cannot open web interface or access web services

Cannot open web interface or access web services

Problem

Cannot open the WVA web interface or access any of the web services.

Possible cause

Password has been changed from the default: admin.

Solution

Check whether another user of the device changed the password. To change the password back to the default, Reset the WVAto factory defaults.

Possible cause

The Web Server network service (HTTP or HTTPS) is disabled.

Solution

Reset the WVAto factory defaults. See Configure network services for more information on HTTP and

HTTPS services.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Cannot receive data from the CANbus

Cannot receive data from the CANbus

When the WVAis connected wither to a CANsimulator or a vehicle diagnostic port, it does not receive data from the CANbus.

Possible cause

When connecting to a CAN simulator, the baud rate was set to Auto Baud or an incorrect baud rate.

Solution

In the web interface, go to Configuration > CAN Bus. Make sure the Baud Rate setting is set to

250000. For more information, see Configure CANbus baud rate (CANbus simulator use only).

Possible cause

When connecting to a vehicle diagnostic port, the WVA is using the incorrect baud rate.

Solution

For vehicle use, the baud rate should always be Auto Baud. In the web interface, go to Configuration > CAN Bus. Make sure the Baud Rate setting is set to Auto Baud. For more information, see CANBus

page descriptions.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting WVA does not connect to an access point

WVA does not connect to an access point

The WVA does not connect to an access point.

Possible cause

n Device is already configured as an access point only.

n The SSID changed.

Solution

1. Determine and verify the new access point to which the WVA should connect.

2. Use the Digi Device Discovery Utility to rediscover the WVA. See Rediscover the WVA.

3. If the problem persists, reset device to factory defaults. See Reset the WVAto factory defaults.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Wi-Fi access issues

Wi-Fi access issues

Cannot access the WVA via Wi-Fi.

Possible cause

You entered an incorrect WPA passkey.

Solution

Determine the correct WPA passkey and enter it. You can also reset the WPA passkey to the default by resetting the device to factory defaults. See Reset the WVAto factory defaults.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Cannot discover device using Wi-Fi Direct

Cannot discover device using Wi-Fi Direct

Cannot discover the WVAusing the Wi-Fi Direct method.

Possible cause

n The WVAmay not be configured for Wi-Fi Direct.

n The Wi-Fi Direct device name may have changed.

Solution

1. Reset the WVAto factory defaults to force it to a known, accessible state.

2. Connect to the device via its access point.

3. Run the Wi-Fi Direct wizard to enable Wi-Fi Direct mode, assign a known Wi-Fi Direct device

name, and select the appropriate association method. See Configure wireless settings.

4. If authentication via PIN has been selected, record the correct PIN.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Cannot associate with WVA over Wi-Fi Direct in push-button mode

Cannot associate with WVA over Wi-Fi Direct in push-button mode

Cannot associate with the WVA over Wi-Fi Direct when in push-button mode.

Possible cause

n The WVA might not be configured for Wi-Fi Direct.

n Authentication via push-button is not enabled.

Solution

1. Reset the WVAto factory defaults to force it to a known, accessible state.

2. Connect to the device via its access point.

3. Run the Wi-Fi Direct wizard to enable Wi-Fi Direct mode, assign a known Wi-Fi Direct device

name, and select the appropriate association method. See Configure wireless settings.

4. If authentication via PIN is selected, record the correct PIN.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Cannot associate with WVA over Wi-Fi Direct in PIN mode

Cannot associate with WVA over Wi-Fi Direct in PIN mode

Cannot associate with the WVA over Wi-Fi Direct when in PIN mode.

Possible cause

n The WVA is not configured for Wi-Fi Direct.

n Authentication via PIN is not enabled.

n Forgotten or changed PIN.

Solution

1. Reset the WVAto factory defaults to force it to a known, accessible state.

2. Connect to the device via its access point.

3. Run the Wi-Fi Direct wizard to enable Wi-Fi Direct mode, assign a known Wi-Fi Direct device

name, and select the appropriate association method. See Configure wireless settings.

4. If authentication via PIN is selected, record the correct PIN.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Troubleshooting Wireless signal strength issues

Wireless signal strength issues

Poor to no wireless signal strength.

Possible cause

Wireless signal strength issues can stem from a number of factors.

n Environmental factors: Various factors can slow down the data rate, lose data, or even ruin

the connection. For example:

l Materials can interfere with communications. Metal, silvering (mirrors), thick glass,

concrete, ceramic, walls, and even large groups of people can absorb or reflect wireless

signals.

l Metal enclosures can block the Wi-Fi signal.

l Other types of signals can interfere with communications: microwaves, fluorescent lights,

motors, 2.4 GHz phones, other Wi-Fi devices, and some military equipment, such as radar

devices.

n Range: As the distance between two devices increases, the received signal between them is

reduced. This distance also affects the speed of the connection (throughput). If the devices

have a strong signal between them, their transmit speeds will be highest. As distance

increases and signals get weaker, the devices will lower their speed. This decrease will have

the effect of extending their range. At some point, when the range is too great, the connection

does not work well or is lost entirely.

n Security features: Security on a Wi-Fi device introduces several factors that can go wrong. For

example, it is easy to introduce errors when enabling security features, such as the WPA Pre-

Shared Key. These errors can cause the Wi-Fi module to not associate with anything and stop

responding. In such a scenario, the only resolution is to reset the device to factory defaults and

repeat the device configuration process.

Solution

When installing the WVA in a vehicle, it is not recommended to mount the WVA under the dash. If you must mount the WVAunder the dash, make sure there are no metal enclosures near it.

If a security feature causes you to be locked out of the WVA, reset the device to factory defaults and repeat the device configuration process. For more information, see Reset the WVAto factory defaults.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

Regulatory information

Anatel

MODELO: WVA-J200

Para maiores informações, consulte o site da ANATEL www.anatel.gov.br.

Este equipamento não tem direito à proteção contra interferência prejudicial e não pode causar interferência em sistemas devidamente autorizados.

Este produto não é apropriado para uso em ambientes domésticos, pois poderá causar interferências eletromagnéticas que obrigam o usuário a tomar medidas necessárias para minimizar estas interferências.

Wireless Vehicle Bus Adapter (WVA) Getting Started Guide

DIGI WVA User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Wireless Vehicle Bus Adapter Getting Started Guide

Features

Setting up your Wireless Vehicle Bus Adapter

Connect the hardware

Verify product components

Optional equipment

Communications equipment

Connect the WVA to a vehicle's diagnostic port

Remove the WVA from the diagnostic port

Power LED

User-defined LED

Connect to the WVA

Connect to the WVA from a smart phone or tablet

Access and use the WVA web interface

Apply and save changes

Cancel changes to configuration settings

Open the web interface

Upload a file to the WVA

Configure the WVA

Configure wireless settings

Configure WVA for Wi-Fi Infrastructure mode

Configure WVA for Wi-Fi Direct

Configure Python programs

Start or stop an already configured Python application

Determine whether Python applications are running

Configure network services

Configure power management settings

About power management

Enable Remote Manager connectivity (optional)

Manage the WVA device

Rediscover the WVA

Reboot the WVA

Disable and enable the factory reset button

Disable the factory reset button

Enable the factory reset button

WVA filesystem and file management

Access/Browse the filesystem from device interfaces

View the system log

Log files and contents

View status information

Deployment decisions

Default behavior regarding time

Default behavior regarding Wi-Fi network connectivity

Default behavior regarding Remote Manager connectivity

Default behavior regarding IP address assignment

WVA web interface page descriptions

Adapter Status page descriptions

Device Information page descriptions

File Management page descriptions

Network Service Configuration page descriptions

Power Management Configuration page descriptions

Python Configuration page descriptions

Get started

Learn the demo application software features

Build your own application

Download the demo application

Start the demo application and discover WVA devices

Discover the WVA

Connect to the WVA

Optional: Manually connect to the WVA

Review the demo application dashboard

Show graph view

Configure endpoints: subscriptions and alarms

Subscribe to an endpoint

Configure an endpoint as an alarm

Delete an alarm

Change application settings

Review fault codes

Demo application issues

Demo application error messages

Demo application: Wi-Fi hotspot issues

Demo application: user login fails

Demo application: Connection Refused error (ECONNREFUSED)

Demo application: Connection has gone away error

Troubleshooting

Power LED is dark