@growbox/sensors/src/sensors/FlyingFishMhSeriesSoilMoistureAnalogSensor.js

An abstraction layer for a selection of raspberry-compatible sensors

/**
 * @author nstCactus
 * @date 09/12/2017 15:30
 */

const AbstractAnalogSensor = require('./AbstractAnalogSensor');

/**
 * A Flying Fish MH series soil moisture analog sensor
 */
class FlyingFishMhSeriesSoilMoistureAnalogSensor extends AbstractAnalogSensor {
  constructor(name, uid, adcInstance, adcAddress) {
    if (!(adcInstance instanceof 'AbstractAnalogToDigitalConverter')) {
      throw new TypeError('The adcInstance parameter must be an instance of AbstractAnalogToDigitalConverter.');
    }

    name = `FlyingFishMhSeriesSoilMoisture_${adcInstance.getName()}_pin${adcAddress}`;


    super(name, uid, adcInstance, adcAddress);
  }

  /**
   * Read from the sensor to get the current a number between 0 and 1023 representing the soil moisture (the bigger the
   * number, the dryer the soil is)
   * @returns {Promise<number>} A promise that, when fulfilled, contains the value read from the sensor.
   */
  read() {
    return this.adcInstance.read(this.adcAddress);
  }
}


module.exports = FlyingFishMhSeriesSoilMoistureAnalogSensor;