pxt-calliope/olddocs/js/micro-bit-api.md
2016-11-01 17:44:37 -07:00

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# @boardname@
The @boardname@ device api. #microbit
Initialize the library.
{shim:}
MACRO: shim
```
if (board == null) {
compassHeadingValue = (<number>null)
startTime = new Date()
board = media.createPortraitBoard(612, 498 + 100)
wall.setBackground(colors.transparent())
let picture = microbitSchema.clone()
let padding = 27
let left = 205
let top = 156
picture.fillRect(left - padding, top, 205 + padding + 4, 200 + padding + 4, 0, colors.black())
picture.fillRect(274, 74, 63, 16, 0, colors.black())
bkg = board.createPicture(picture)
bkg.width() = board.width()
bkg.left() = 0
bkg.top() = 0
createButtons()
finger = board.createEllipse(20, 20)
finger.setOpacity(0)
ledOnColor = "#ff4f4f".toColor()
ledOffColor = colors.transparent()
boardColor = colors.fromRgb(0.85, 0.95, 0.85)
backLeds = board.createSpriteSet()
leds = board.createSpriteSet()
let backLedColor = "#202020".toColor()
let ledOpacity = 127 / 255
let ledW = 10
let ledOffset = 48
let ledH = 20
for (let i = 0; i < 5; i++) {
let ledTop = i * ledOffset + top
for (let j = 0; j < 5; j++) {
let ledLeft = j * ledOffset + left
let backLed = board.createRectangle(ledW, ledH)
backLed.setColor(backLedColor)
let led = board.createRectangle(ledW + 8, ledH + 8)
backLed.left() = ledLeft
backLed.top() = ledTop
led.x() = backLed.x()
led.y() = backLed.y()
led.setOpacity(ledOpacity)
led.setColor(ledOffColor)
led.setShadow(10, colors.red(), 0, 0)
ledIndexAnim(backLed, j, i)
backLeds.add(backLed)
leds.add(led)
}
}
initEyes()
initAxis()
initPins()
updateAxis()
backgroundAnimation()
board.onEveryFrame(() => {
updateBoard()
})
board.postToWall()
}
```