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Every Phidget channel you use in any program will follow the same life cycle:  
Every Phidget channel you use in any program will follow the same life cycle:  

Latest revision as of 16:58, 15 March 2021

 Phidget Programming Basics: Phidget Program OutlineTOC Icon.png Table of Contents

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3 . Phidget Program Outline

General Phidget Program Flowchart.png

Every Phidget channel you use in any program will follow the same life cycle:

  1. Create a channel: Make a variable to keep track of your Phidget
  2. Address the channel: Set some basic parameters to indicate which Phidget to connect to.
    • You can specify as much, or as little as you deem necessary. You can even use a Phidget without specifying any parameters, if your system is simple enough.
  3. Open the channel: Opening the channel will begin trying to match a physical Phidget channel to your software channel.
  4. Detect when the channel is attached: Your program must wait until a physical Phidget channel has been attached to your software channel.
    • The attachment process is handled automatically, and will attach to the first available Phidget channel that matches all your specified addressing parameters.
    • A channel is attached when the Phidget libraries link a physical Phidget channel to your software channel.
    • Waiting for attachment can be handled automatically as part of opening the channel or separately, as best suits your program.
  5. Do things with the channel: Send commands to and receive data from your Phidget.
    • This section will encompass the majority of your program. The Phidget API / libraries will make this process as straightforward as possible, and is similar across all types of Phidgets.
  6. Close the channel: Once your program is done, you close the Phidget channel.
    • This frees up the Phidget for the next program that might need it.


For a closer look at the parts of a Phidget program, the following pages will dissect the parts of a Phidget program in more detail. Small code snippets are provided for each step to provide a representation of the code.