Brick ref topics 02 (#283)
* Add brick button topics * Add the rest of the brick api
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Peli de Halleux
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docs/reference/brick/battery-level.md
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docs/reference/brick/battery-level.md
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# battery Level
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Return the current battery level.
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```sig
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brick.batteryLevel();
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```
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## Returns
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* a [number](/types/number) which is the current charge level of the brick's battery. This is a percentage of total charge left in the battery.
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## Example
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Show the battery level percentage on the screen. Also, show a green light if the battery level is above 15%. If the battery level is below 15% but above 5%, show a orange light. But, if the battery level is below 5%, show a pulsing red light.
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```blocks
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let battery = 0;
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loops.forever(function() {
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brick.showString("Battery level:", 1)
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brick.showNumber(battery, 2)
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battery = brick.batteryLevel();
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if (battery > 15)
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{
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brick.setLight(BrickLight.Green);
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} else if (battery > 5) {
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brick.setLight(BrickLight.Orange);
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} else {
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brick.setLight(BrickLight.RedPulse)
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}
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loops.pause(30000)
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})
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```
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