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| − | Component macros are sections of code that have been written to support the components included with Flowcode 6.<br />
| + | For an excellent introduction guide, we recommend [https://www.flowcode.co.uk/education/ Introduction to microcontroller programming] |
| − | They take all the effort out of using these components.
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| − | This exercise uses them to control a particularly complicated, but very common device, the Liquid Crystal Display (LCD).
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| − | It uses it to display the elapsed time.
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| − | __TOC__
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| − | ==The core sequence==
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| − | The flowchart sequence for the elapsed time will be:
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| − | : Check if the switch is pressed.
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| − | :: If it isn't, go back to the beginning.
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| − | :: If it is:
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| − | ::: initialize the LCD;
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| − | ::: display the text "Elapsed time";
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| − | ::: initialize the time;
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| − | ::: display the time
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| − | ::: wait for one second;
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| − | ::: increment the time;
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| − | ::: display the new time;
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| − | ::: loop back and repeat this process.
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| − | ==Set up the flowchart==
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| − | * Open Flowcode, and set up the new flowchart as described in [[Exercise - Creating Your First Flowchart|Creating Your First Flowchart]].
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| − | ==Create the core sequence==
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| − | * Locate the 'LCD' inside the 'Outputs' toolbox.
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| − | :* Hover over the image to the left of the 'LCD' label, and click on the down-arrow that appears. | |
| − | :* Click on the 'Add to system panel' option to select it.
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| − | :* Zoom in until the LCD image is big enough to read.
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| − | * Click and drag an infinite loop between the 'BEGIN' and 'END' icons.
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| − | * Inside the loop:
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| − | :* Click and drag a 'Component macro' icon.
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| − | The program 'knows' when you have added a component to the System or Dashboard panel.
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