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79 lines
2.5 KiB
79 lines
2.5 KiB
# GhostInTheFirmware
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Born out of the desire to demo LED effects on the keyboard without having to
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touch it by hand (which would obstruct the video), the `GhostInTheFirmware`
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plugin allows one to inject events at various delays, by telling it which keys
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to press. Unlike macros, these press keys at given positions, as if they were
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pressed by someone typing on it - the firmware will not see the difference.
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Given a sequence (with press- and delay times), the plugin will walk through it
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once activated, and hold the key for the specified amount, release it, and move
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on to the next after the delay time.
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## Using the plugin
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To use the plugin, one needs to include the header, and configure it with a list
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of key coordinates, a press time, and a delay time quartett. One also needs a
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way to trigger starting the sequence, and a macro is the most convenient way for
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that.
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```c++
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#include <Kaleidoscope.h>
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#include <Kaleidoscope-GhostInTheFirmware.h>
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#include <Kaleidoscope-Macros.h>
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const macro_t *macroAction(uint8_t macro_id, KeyEvent& event) {
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if (macro_id == 0 && keyToggledOn(event.state))
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GhostInTheFirmware.activate();
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return MACRO_NONE;
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}
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static const kaleidoscope::plugin::GhostInTheFirmware::GhostKey ghost_keys[] PROGMEM = {
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{KeyAddr(0, 0), 200, 50},
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{KeyAddr::none(), 0, 0}
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};
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KALEIDOSCOPE_INIT_PLUGINS(GhostInTheFirmware,
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Macros);
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void setup() {
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Kaleidoscope.setup ();
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GhostInTheFirmware.ghost_keys = ghost_keys;
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}
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```
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The plugin won't be doing anything until its `activate()` method is called -
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hence the macro.
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## Plugin methods
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The plugin provides the `GhostInTheFirmware` object, which has the following
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methods and properties:
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### `.activate()`
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> Start playing back the sequence. Best called from a macro.
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### `.ghost_keys`
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> Set this property to the sequence of keys to press, by assigning a sequence to
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> this variable. Each element is a `GhostKey` object, comprised of a `KeyAddr`
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> (the location of a key on the keyboard), a duration of the key press (in
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> milliseconds), and a delay after the key release until the next one is pressed
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> (also in milliseconds).
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> This `ghost_keys` array *MUST* end with the sentinal value of
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> `{KeyAddr::none(), 0, 0}` to ensure that GhostInTheFirmware doesn't read past
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> the end of the array.
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>
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> The sequence *MUST* reside in `PROGMEM`.
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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]: /examples/Features/GhostInTheFirmware/GhostInTheFirmware.ino
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