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- ----------MSP430G2-LaunchPad CapTouch BoosterPack User Experience GUI-----------
- Ver.: 1.00 Initial Release
- February 2011
- Dung Dang
- MSP430 Applications
- Texas Instruments, Inc.
- --------------------------------------------------------------------------------
-
- CONTENTS
-
- I. DESCRIPTION
- II. APPLICATION USAGE
- III. PROJECT SETUP & RESOURCES
- IV. OTHER PLATFORM SUPPORT
-
-
- I. DESCRIPTION
- -----------------------------------
-
- Written in processing, this Windows PC GUI application communicates with the
- LaunchPad to receive specific capacitive touch data from the LaunchPad CapTouch
- BoosterPack and provides the visualization of said information in the GUI.
-
- The GUI uses a small .NET utility (FindAppUART.exe) to automatically detect
- a proper LaunchPad/430Emulator device connected to the PC USB port. Upon
- correct USB COM port discovery, the application initiates a 9600baud UART
- connection and starts receiving data.
-
- Upon each LaunchPad event, data is transmitted [always] via a simple '2-byte'
- protocol as described below.
-
-
- [LaunchPad] Wake up : 0xBE 0xEF
- [LaunchPad] Sleep : 0xDE 0xAD
- [CapTouch] Center Button : 0x80 0x80
- [CapTouch] Wheel Tap : WT WT = pos. on wheel [0-0x0F] + 0x30
- [CapTouch] Gesture Start : 0xFC POS = pos. on wheel [0-0x0F] + 0x20
- [CapTouch] Gesture Stop : 0xFB POS = pos. on wheel [0-0x0F] + 0x20
- [CapTouch] Gesture Update: GES POS
-
- [GES] Gesture = [0-0x0F] --> Clockwise gesture
- = 0x10+ [0-0x0F] --> Counter-clockwise gesture
-
- II. APPLICATION USAGE
- -----------------------------------
- 1. Startup
- Upon startup, the GUI checks for a valid LaunchPad USB serial COM port. If
- no compatible port connection is available, the GUI prompts user to plug in
- the LaunchPad CapTouch BoosterPack. The GUI will continue as normal whenever
- a LaunchPad is plugged into the PC.
-
- 2. Sleep Mode
- Upon start-up or after long period of inactivity, the device goes into sleep
- mode. The GUI grays out accordingly indicate such inactivity.
- Upon proximity sensor detection (wave hand 1-2 inch above the BoosterPack) the
- device returns to active mode and triggers the GUI to wake up as well.
-
- 3. Active Mode
- - The 'Center Button' press data toggles the center circle color, mimicking the
- behavior of the center LED on the BoosterPack.
- - The 'Wheel Tap' is represented by lighting up a single slice on the wheel.
- - The gesture tracking [Start, Stop, Update] is visualized on the wheel with
- the coloration of the wheel slices. Gesture can be tracked for several
- revolutions of the wheel, in both clockwise and counter-clockwise directions.
-
- * A hidden code/lock is embedded in the wheel. Correct sequence [similar to a
- rotational combination lock] reveals a secret.
-
-
- III. PROJECT SETUP & RESOURCES
- -----------------------------------
-
- Below is the directory structure of the processing project
-
- [CapTouch_BoosterPack_UserExperience_GUI] [PROJECT_ROOT]
- |
- | CapTouch_BoosterPack_UserExperience_GUI.pde <Processing appcalition code>
- | FindAppUART.exe <to copy to application.windows after each processing build>
- | README <this file>
- |
- +---[data] <images & sounds>
- | |---*.png
- | \---*.aiff
- |
- +---[application.windows] <processing java source export & binary build>
- | |---[lib]
- | |---[source]
- | |---CapTouch_BoosterPack_UserExperience_GUI.exe <Main application>
- | |---FindAppUART.exe <.NET utility to detect LaunchPad USB serial COM port>
- | \--- . . .
-
-
- Legend: [Directory]
- |---filename
-
- The processing application code is contained within one file,
- CapTouch_BoosterPack_UserExperience_GUI.pde, which must reside in a similarly
- named workspace-acting folder. The code invokes two additional libraries, serial
- [comes with processing] for serial communication through the USB COM port and
- pitaru.sonia_v2_9.* (available at http://sonia.pitaru.com/download.htm) for
- sound processing feature [optional in the GUI]. The libraries DLLs will be
- generated in the [application.windows] folder when the application is exported.
-
- The application also invokes a small .NET utility <FindAppUART.exe> to
- automatically detect a compatible LaunchPad USB COM port available to the PC.
- The code expects this executable file to be present locally to the effective
- working directory during execution.
- * Specifically, during debug, processing's working directory is
- C:\processing-1.1\java\bin and processing expects to be able to locate
- <FindAppUART.exe> here. For the sake of simplicity, simply create a copy of the
- file here.
- * After application export and the final application executable has been
- created, <FindAppUART.exe> should be placed in the same directory with the file
- CapTouch_BoosterPack_UserExperience_GUI.exe. By default this directory is
- [application.windows]
-
- !NOTE: The FindUART.exe file must be copied back into the [application.windows]
- directory after each export, as processing removes the entire directory during
- the application export process. Make sure to keep a local copy of the file
- FindUART.exe.
-
- IV. OTHER PLATFORM SUPPORT
- -----------------------------------
-
- The main application code is written in processing, a java-based language that
- is portable to different OS platforms such as Windows, Linux or Mac. However
- it utilizes the serial driver & the .NET COM port utility that is developed
- for Windows only. Replacing this component with the equivalent [driver] in Linux
- or Mac would enable a complete port of this application.
-
- Additionally, a Linux or Mac USB/COM port driver must also be installed in order
- to connect and communicate with the LaunchPad.
-
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