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# Kaleidoscope-LED-AlphaSquare
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![status][st:experimental] [![Build Status][travis:image]][travis:status]
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[travis:image]: https://travis-ci.org/keyboardio/Kaleidoscope-LED-AlphaSquare.svg?branch=master
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[travis:status]: https://travis-ci.org/keyboardio/Kaleidoscope-LED-AlphaSquare
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[st:stable]: https://img.shields.io/badge/stable-✔-black.png?style=flat&colorA=44cc11&colorB=494e52
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[st:broken]: https://img.shields.io/badge/broken-X-black.png?style=flat&colorA=e05d44&colorB=494e52
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[st:experimental]: https://img.shields.io/badge/experimental----black.png?style=flat&colorA=dfb317&colorB=494e52
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An alphabet for your per-key LEDs, `AlphaSquare` provides a way to display 4x4
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"pixel" symbols on your keyboard. With this building block, one can build some
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sweet animations, or just show off - the possibilities are almost endless!
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## Using the plugin
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To use the plugin, one needs to include the header, and one way or another, call
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the `display` method.
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```c++
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#include <Kaleidoscope.h>
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#include <Kaleidoscope-LED-AlphaSquare.h>
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void setup () {
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Kaleidoscope.setup (KEYMAP_SIZE);
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Kaleidoscope.use (&AlphaSquare, NULL);
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AlphaSquare.display (Key_A);
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}
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```
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## Plugin methods
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The plugin provides the `AlphaSquare` object, which has the following methods:
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### `.display(key)`
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### `.display(key, row, col)`
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### `.display(key, col)`
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> Display the symbol for `key` at the given row or column. If `row` is omitted,
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> the first row - `0` is assumed. If the column is omitted too, then the third -
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> `2` - column is used by default.
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>
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> The plugin can display the English alphabet, and the numbers from 0 to 9.
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### `.display(symbol)`
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### `.display(symbol, row, col)`
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### `.display(symbol, col)`
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> Almost the same as the previous function, but instead of a key, it expects a
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> 4x4 bitmap.
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### `.color`
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> The color to use to draw the pixels.
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>
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> Not a method itself, but a changeable value.
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>
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> Defaults to { 0x80, 0x80, 0x80 }.
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## Plugin helpers
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### `SYM4x4(...)`
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> A helper macro, which can be used to set up custom bitmaps. It expects 16
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> values, a 4x4 square of zeroes and ones. Zeroes are transparent pixels, ones
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> will be colored.
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## Further reading
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Starting from the [example][plugin:example] is the recommended way of getting
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started with the plugin.
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[plugin:example]: https://github.com/keyboardio/Kaleidoscope-LED-AlphaSquare/blob/master/examples/LED-AlphaSquare/LED-AlphaSquare.ino
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