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| − | The aim of this exercise is to use analogue input devices within a Flowcode flowchart.
| + | For an excellent introduction guide, we recommend [https://www.flowcode.co.uk/education/ Introduction to microcontroller programming] |
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| − | Digital inputs are simpler to deal with, as they have a finite range of possible values.<br />
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| − | For example, a two bit digital input can have one of only four possible values - 00, 01, 10 or 11.<br /> | |
| − | Flowcode uses an 'Input' icon [[File:Btn Input.gif|30px]] to deal with digital inputs.
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| − | An analogue input, on the other hand can have any of an infinite number of possible values.<br />
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| − | As a result, it is more difficult to handle in Flowcode.
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| − | A component macro [[File:Btn Component Macro.gif|30px]] is used to input data from an analogue sensor.
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| − | ===Initialise the LCD===
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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.[[File:Btn_Component_Macro.gif|30px]]
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| − | ::* Double click on it to open the dialogue box, so that you can configure it.
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| − | ::: The program 'knows' which components you have added to the System or Dashboard panel, and modifies the list of available commands accordingly.
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| − | ::: Under 'Components', the ADC dial will be listed, and underneath it the list of commands.
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| − | ::* Scroll down the list and click on the 'GetByte' command.
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| − | ::: This reads the output of the analogue input device - the ADC dial in this case, and stores it in the byte variable 'input'.
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| − | ::* Rename the 'Display name' as "Read the input".
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| − | ::* Click on 'OK'.
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| − | ::* The dialogue box is shown below.
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