SPO2

Creating Sensors

const spo2 = hmSensor.createSensor(hmSensor.id.SPO2)

SPO2 instance

spo2: object

Properties	Description	Type
current	Blood oxygen measurement values	number
time	time when the result was generated	number
retcode	result return code	number
hourAvgofDay	Returns the hourly average blood sample data, length 24	Array<number>

retcode value	Description
0	Measurement invalid
1	Continue measuring
2	Measurement success
3	Measurement failure
4	Not wearing
5	Measurement timeout
6	Invalid wearing
7	Invalid signal
8	Low blood oxygen value
9	High blood oxygen value
10	Measurement invalid

start

Start blood oxygen measurement

spo2.start()

info

It' s recommended to call stop before calling the start method to stop the last measurement

stop

Cancel blood oxygen measurement

spo2.stop()

Registering sensor instance callback events

calorie.addEventListener(event, callback: Callback)

The events of CHANGE

The value of event

hmSensor.event.CHANGE

Callback

() => void

Full Example

class TextByLine {
  constructor(params) {
    const { text = '', y = undefined, line = 0 } = params

    this.text = text
    this.y = y
    this.line = line
    this.y_computed = Number.isInteger(this.y) ? this.y : px(this.line * 60 + 120)
  }

  render() {
    return hmUI.createWidget(hmUI.widget.TEXT, {
      x: px(0),
      y: this.y_computed,
      w: px(480),
      h: px(46),
      color: 0xffffff,
      text_size: px(20),
      align_h: hmUI.align.CENTER_H,
      align_v: hmUI.align.CENTER_V,
      text_style: hmUI.text_style.NONE,
      text: this.text
    })
  }
}

Page({
  build() {
    const spo2 = hmSensor.createSensor(hmSensor.id.SPO2)

    new TextByLine({
      text: `current:${spo2.current};time:${spo2.time};retcode:${spo2.retcode}`,
      line: 0
    }).render()

    const changeEventText = new TextByLine({
      text: `EVENT-CHANGE:${spo2.current}`,
      line: 1
    }).render()

    const changeCallback = () => {
      const current = spo2.current
      const time = spo2.time
      const retcode = spo2.retcode

      changeEventText.setProperty(hmUI.prop.MORE, {
        text: `EVENT-CHANGE: ${current};${time};${retcode}`
      })
    }

    const spo2ChangeListener = () => {
      spo2.addEventListener(hmSensor.event.CHANGE, changeCallback)
    }

    hmUI.createWidget(hmUI.widget.BUTTON, {
      x: px(80),
      y: px(300),
      w: px(300),
      h: px(60),
      radius: px(12),
      normal_color: 0xfc6950,
      press_color: 0xfeb4a8,
      text: 'REGISTER_CHANGE',
      click_func: spo2ChangeListener
    })

    hmUI.createWidget(hmUI.widget.BUTTON, {
      x: px(80),
      y: px(380),
      w: px(300),
      h: px(60),
      radius: px(12),
      normal_color: 0xfc6950,
      press_color: 0xfeb4a8,
      text: 'START',
      click_func: () => {
        spo2.stop()
        spo2.start()
      }
    })

    const hourAvgOfDay = spo2.hourAvgOfDay

    for (let i = 0; i < hourAvgOfDay.length; i++) {
      new TextByLine({
        text: `index:${i};${hourAvgOfDay[i]}`,
        line: 8 + i
      }).render()
    }
  }
})