Skip to main content

SevenSegmentDisplay

caution

This service is rc and may change in the future.

A 7-segment numeric display, with one or more digits.

import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()

Commands​

setNumber​

Shows the number on the screen using the decimal dot if available.

sevenSegmentDisplay.setNumber(value: number): Promise<void>

Registers​

intensity​

Controls the brightness of the LEDs. 0 means off.

  • type: Register<number> (packing format u0.16)

  • optional: this register may not be implemented

  • read and write

import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
const value = await sevenSegmentDisplay.intensity.read()
await sevenSegmentDisplay.intensity.write(value)
  • track incoming values
import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
sevenSegmentDisplay.intensity.subscribe(async (value) => {
    ...
})
note

write and read will block until a server is bound to the client.

doubleDots​

Turn on or off the column LEDs (separating minutes from hours, etc.) in of the segment. If the column LEDs is not supported, the value remains false.

  • type: Register<boolean> (packing format u8)

  • optional: this register may not be implemented

  • read and write

import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
const value = await sevenSegmentDisplay.doubleDots.read()
await sevenSegmentDisplay.doubleDots.write(value)
  • track incoming values
import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
sevenSegmentDisplay.doubleDots.subscribe(async (value) => {
    ...
})
note

write and read will block until a server is bound to the client.

digitCount​

The number of digits available on the display.

  • type: Register<number> (packing format u8)

  • constant: the register value will not change (until the next reset)

  • read only

import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
const value = await sevenSegmentDisplay.digitCount.read()
note

write and read will block until a server is bound to the client.

decimalPoint​

True if decimal points are available (on all digits).

  • type: Register<boolean> (packing format u8)

  • optional: this register may not be implemented

  • constant: the register value will not change (until the next reset)

  • read only

import { SevenSegmentDisplay } from "@devicescript/core"

const sevenSegmentDisplay = new SevenSegmentDisplay()
// ...
const value = await sevenSegmentDisplay.decimalPoint.read()
note

write and read will block until a server is bound to the client.