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Heat, Ventilation and Air Conditioning provides UI controls to operate this subystem of the car from tizen.vehicle API.

Uses mainly CarIndicator module from carIndicator.

Application directly controls following AMB properties:

  • WindowStatus
    • FrontDefrost
    • RearDefrost
  • HVAC
    • FanSpeed
    • TargetTemperatureRight
    • TargetTemperatureLeft
    • SeatHeaterRight
    • SeatHeaterLeft
    • AirConditioning
    • AirRecirculation
    • AirflowDirection
  • LightStatus
    • Hazard
  • DirectionIndicationINST
  • DirectionIndicationMS
  • ACCommand
  • RecircReq
  • FrontTSetRightCmd
  • FrontTSetLeftCmd
  • FrontBlwrSpeedCmd
  • HeatedSeatFRModeRequest
  • HeatedSeatFRRequest
  • HeatedSeatFLModeRequest
  • HeatedSeatFLRequest
  • FLHSDistrCmd
  • FRHSDistrCmd

Additionally HVAC application implements following scenarios:

  • Automatic AC mode - Sets Fan Speed to zero, Airflow direction to OFF, Air re-circulation to off and both target temperatures to 22 degrees. Turning off Automatic AC mode will set all properties to their previous values. If any of properties are set separately Automatic AC mode is turned off.
  • Max defrost mode - Maximum defrost mode sets Fan speed to maximum value, Airflow direction to Screen and resets Left target temperature within range 16 to 28 degrees. If any of properties are set separately Max defrost mode is turned off.


Watch HVAC video.

Access the Design Requirements Document (DRD).

Access the Sources.

Download the Application WGT.

What the app does

There are a number of active controls for the vehicle

including hazards lights, heated seats, temperature control for the right and left sides, fan speed, air flow, defrost, air conditioning, and re-circulation.

For each feature, the user touches the appropriate icon and adjusts the settings by sliding or activating. Features that require only a touch include:

  1. Hazard Lights
  2. Heated Seats
  3. Air Flow
  4. A/C
  5. Auto
  6. Recirculate
  7. Defrost Controls

Features that require a touch then slide or swipe include:

  1. Temp control for left and right.
  2. Fan Speed

Close this app with the large arrow at the bottom of the screen.

Technical Details

The sections below are taken from directions for what is known as the Tizen IVI 3.0-M2-EOY (commonly called 'the Jan. 15 image'. The current Tizen release is dated 2014.01.14, and may require some adjustment.

Installation Prerequisites

The following installation directions take the base Tizen image and install needed supporting software

Instructions for debugging WRT Apps on Tizen IVI (installation, removal, and deployment)

Tizen IVI WRT applications are built into widget ('.wgt') files for deployment (a format based on the W3C widget specification, see for more information). Once you have built or received the widget files for one or more applications that you wish to deploy and run, the next step is to copy them onto the target device. Common options for this would be tools like scp/sftp (in a Linux/Unix environment), FileZilla (Windows and Mac) or Cyberduck (Mac).

Once the .wgt files have been transferred to the target machine, they may be installed, launched and uninstalled.

To get a list of currently installed applications, use the following command from a terminal (or remote shell/ssh session) on the target hardware (log in as root with the password tizen):

root:~> wrt-launcher -l

This will produce output similar to the following:

No Name Version GUID Package ID App ID
1 saythis 1.0.0 http://yourdomain/sayThis lYjFlj49Q4 lYjFlj49Q4.saythis
2 Settings 1.0.0 http://yourdomain/Settings ODBQpKvkS1 ODBQpKvkS1.Settings
3 MediaPlayer 1.0.0 http://yourdomain/MediaPlayer t8j6HTRpuz t8j6HTRpuz.MediaPlayer
4 Store 8.2.4401 intelPoc13 intelPoc13.Store
5 Phone 8.2.4399 intelPoc16 intelPoc16.HVAC

If the application you wish to install is not already installed, simply enter (using intelPoc16.HVAC.wgt as an example):

root:~> wrt-installer -i intelPoc16.HVAC.wgt

If successful, you should see output such as the following:

   # wrt-installer #
   # argc [3]
   # argv[0] = [wrt-installer]
   # argv[1] = [-i]
   # argv[2] = [intelPoc16.HVAC.wgt]
   ## wrt-installer : intelPoc16.HVAC installation was successful.

If unsuccessful, you may see errors such as 'invalid widget package', 'privilege level violation' or, if the application is already installed (and its widget file was built with a different signature than the one you wish to install), 'invalid signature'. The first two errors are out of scope for this document.

If you see 'invalid signature', and the widget file has to your knowledge been created with a valid signature, the likely cause is a conflict between the signature of the currently installed version and that of the new version. Though both signatures may be valid, the system treats the upgrade of an existing package with a different signature as a security violation. To work around this issue, simply uninstall the application and subsequently install the new version:

root:~> wrt-installer -un intelPoc16.HVAC      <-- note: use the App ID when 
un-installing and the full widget filename when installing

If the uninstall is successful, you should see output like the following:

    # wrt-installer #
    # argc [3]
    # argv[0] = [wrt-installer]
    # argv[1] = [-un]
    # argv[2] = [intelPoc16.HVAC]
    ## wrt-installer : intelPoc16.HVAC uninstallation was successful.

Refer to installation instructions above for the subsequent installation steps.

In order to launch and run an installed application, issue the following command with the application's App ID as an argument:

root:~> wrt-launcher -s intelPoc16.HVAC

You should see the application start and run on the target device.

To launch the application in debug mode, add the '-d' flag:

root:~> wrt-launcher -d -s intelPoc16.HVAC

This will produce output like the following:

root:~/wgt> wrt-launcher -d -s intelPoc16.HVAC
    port: 36070
    result: launched

The port number referenced is a random high port which allows one to connect to the target device with a web browser using a URL of the form:

http://&lt;ip address or name of target device>:<port #>

For example:

Once connected, you should see a single link in the upper right of the resulting web page, e.g.:


Clicking that link will launch Webkit Web Inspector, a set of web development tools that should look familiar to users of Firefox Firebug or Chrome Dev Tools. Click the 'Console' icon in the toolbar to go to the Javascript console. Press ctrl-R, or type:


…to reload the application in order to display the startup/initialization functions associated with the app (since the app has already started by the time the debug interface is available).

To exit a running application, issue the following command with the application's App ID as an argument:

root:~> wrt-launcher -k intelPoc16.HVAC

Known Bugs


Release History


  • Features that require only a touch include:
    • Hazard Lights
    • Heated Seats
    • Air Flow
    • A/C
    • Auto
    • Recirculate
    • Defrost Controls
  • Features that require a touch then slide or swipe include:
    • Temp control for left and right.
    • Fan Speed

Bug Fixes

  • INTIVIPOCII-64 Implement HVAC properties
  • INTIVIPOCII-228 Right slider has an offset of touch area
  • INTIVIPOCII-326 plugin breaks HVAC functionality
  • INTIVIPOCII-266 Randomizer not changing average consumption value
  • INTIVIPOCII-64 Change IviPoC_ properties to existing AMB properties
    • Example: IviPoC_Speed =⇒ Vehicle Speed
  • INTIVIPOCII-20 Switch day (blue) and night (green) theme based on AMB signal from Automotive Web API
  • INTIVIPOCII-22 Rework car indicators to listen to AMB signals (Java script/HTML5)
  • INTIVIPOCII-35 Add stop script functionality to AMB Simulator
  • INTIVIPOCII-371 With steering wheel plugin loaded exterior brightness is not changed
  • INTIVIPOCII-30 Refactor template file to use amb pluginimpl base class, create signal classes
  • INTIVIPOCII-35 Add amb console output
  • INTIVIPOCII-35 Add documentation comments to AMB simulator
  • INTIVIPOCII-35 Rework UI for signal generator in AMBSimulator
    • Change zones input grid and allow adding all zones for all signals and change text inputs visuals into theme inputs
  • INTIVIPOCII-35 Create randomize demo script for AMBSimulator
  • Randomizer does not work
  • INTIVIPOCII-169 Create AMB cans implugin
  • Generate mapping table for all AMB properties
    • Receives CAN frames from CANGen Plugin and translates them into AMB properties and update them in AMB
  • Fit AMB simulator UI to overall theme
  • Create AMB cangenplugin
    • AMB sink plugin similar to websocketsink. Based on websocket requests will generate CAN frames for CANSimPlugin
  • INTIVIPOCII-169 Generate mapping table for AMB properties
  • INTIVIPOCII-30 Refactor template file to use AmbPluginImpl as base class
  • INTIVIPOCII-310 Property library view is not refreshed after return from Search view
  • INTIVIPOCII-30 Provide optional toggle to anonymize AMB property names
agl-demonstrator/hvac.txt · Last modified: 2015/08/08 22:53 by wminer