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How to use visi genie Keyboard object to input string to string box?

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  • How to use visi genie Keyboard object to input string to string box?

    Hello,

    I want to use the keyboard object to type characters to string box, is there any instructions or sample code for it?
    Is there any resources for the uLCD43(GFX) Running 4D-ViSi QWERTY Keypad Demo (https://www.youtube.com/watch?v=uM0QEFDteek), I only want to know how the typing to display is done.

    Li

  • #2
    Hi Li,

    Which environment are you planning to use - the ViSi or ViSi-Genie environment? The demo in the video is a project created using the ViSi environment. In ViSi-Genie, there is no way to implement this for now unless you have an external controller (eg an Arduino host that receives the characters from the keyboard object, processes, and sends them back to the string object).

    For now, you can play with the demo in Workshop: File -> Samples -> Picaso ViSi -> KEYBOARD.4DViSi.

    This demo does not send data to the serial port. I will ask my colleagues for the source code of the project in the youtube video. Also, this application note may help you:

    ViSi Keyboard

    http://www.4dsystems.com.au/appnote/4D-AN-00073/

    Regards.
    Doff

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    • #3
      Thanks for replying, I am using ViSi-Genie environment and the host is raspberry pi. I need some help on receiving the characters from the keyboard object, processes, and sends them back to the string object parts. Are there any appnotes on these topics, like if 'Q' is press on the keyboard object how do I detect it on the Pi and write the string back to string object.

      I learned I need a void handleGenieEvent (struct genieReplyStruct *reply) function, but I'm not sure about the detail and how to work with multiply keyboard objects.

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      • #4
        Hi Li,

        You may find this relevant to your inquiry:

        https://github.com/4dsystems/ViSi-Ge...emo-Calculator

        Hope this helps you get started.

        Regards.
        Doff

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        • #5
          I use VISI Genie. Would like to be able to use the keyboard to search within display for keywords. ie; menu items without having to flip through forms of menus to find keyword.

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