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Broadcast the sensor value on Eddystone (BLE) on micro:bit
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| const NAMESPACE = [ // sha1('your.doma.in').slice(0, 10) | |
| 0x8f, 0xa3, 0xfa, 0xa1, | |
| 0xb4, 0xa3, 0x99, 0x67, | |
| 0x0c, 0x0f | |
| ] | |
| const DEVICE = 0x0000 // 2 bytes | |
| const POWER = 7 // no reason | |
| const CONNECTABLE = false // no reason | |
| // Returns depend on the role of the device | |
| function getCurrentNumber() { | |
| return input.acceleration(Dimension.Strength) | |
| // return input.temperature() | |
| } | |
| function peekIcon(icon: number) { | |
| basic.showIcon(icon) | |
| basic.pause(1000) | |
| basic.clearScreen() | |
| } | |
| // Show an icon at startup | |
| peekIcon(IconNames.Heart) | |
| // Show an icon when the A button is pressed | |
| input.onButtonPressed(Button.A, () => peekIcon(IconNames.Heart)) | |
| // Show value when the B button is pressed | |
| input.onButtonPressed(Button.B, () => basic.showNumber(getCurrentNumber())) | |
| // Broadcasting | |
| basic.forever(() => { | |
| const buffer = pins.createBuffer(16) | |
| NAMESPACE.forEach((byte, i) => buffer.setNumber(NumberFormat.UInt8BE, i, byte)) | |
| buffer.setNumber(NumberFormat.UInt16BE, 10, DEVICE) | |
| buffer.setNumber(NumberFormat.UInt32BE, 12, getCurrentNumber()) | |
| bluetooth.advertiseUidBuffer(buffer, POWER, CONNECTABLE) | |
| }) |
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