import jp.lionas.androidthings.sensor.mcp3008.MCP3008Driver

// Access the dust sensor:

private val mcp3008: MCP3008 = MCP3008()

mcp3008.register()

// Read the current values:

mcp3008.readAdc(channels)

// Close the dust sensor when finished:

mcp3008.unregister()

// Register the driver:

private val callback = SensorCallback()
private lateinit var sensorManager: SensorManager
private lateinit var driver: MCP3008Driver

sensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager
sensorManager.registerDynamicSensorCallback(callback)
driver = MCP3008Driver()
driver.register()

private inner class SensorCallback : DynamicSensorCallback() {

    override fun onDynamicSensorConnected(sensor: Sensor) {
        if (sensor.type == Sensor.TYPE_DEVICE_PRIVATE_BASE &&
                sensor.name!!.contentEquals(MCP3008Driver.DRIVER_NAME)) {
            sensorManager.registerListener(
                    this@HomeActivity,
                    sensor,
                    SensorManager.SENSOR_DELAY_NORMAL
            )
        }
    }

    override fun onDynamicSensorDisconnected(sensor: Sensor?) {
        sensorManager.unregisterListener(this@HomeActivity)
        super.onDynamicSensorDisconnected(sensor)
    }

}

override fun onSensorChanged(event: SensorEvent?) {
    // digital value = event.values[0] (0 to 1023)
}

// Unregister and close the driver when finished:

sensorManager.unregisterDynamicSensorCallback(callback)
sensorDriver.unregister()