com.github.pires.obd.commands.engine.MassAirFlowObdCommand Maven / Gradle / Ivy

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OBD Java API compatible with ELM327.

There is a newer version: 1.0

/**
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.github.pires.obd.commands.engine;

import com.github.pires.obd.commands.ObdCommand;
import com.github.pires.obd.enums.AvailableCommandNames;

/**
 * Mass Air Flow
 */
public class MassAirFlowObdCommand extends ObdCommand {

  private float maf = -1.0f;

  /**
   * Default ctor.
   */
  public MassAirFlowObdCommand() {
    super("01 10");
  }

  /**
   * Copy ctor.
   *
   * @param other a {@link com.github.pires.obd.commands.engine.MassAirFlowObdCommand} object.
   */
  public MassAirFlowObdCommand(MassAirFlowObdCommand other) {
    super(other);
  }

  @Override
  protected void performCalculations() {
    // ignore first two bytes [hh hh] of the response
    maf = (buffer.get(2) * 256 + buffer.get(3)) / 100.0f;
  }

  @Override
  public String getFormattedResult() {
    return String.format("%.2f%s", maf, "g/s");
  }

  /**
   * @return MAF value for further calculus.
   */
  public double getMAF() {
    return maf;
  }

  @Override
  public String getName() {
    return AvailableCommandNames.MAF.getValue();
  }

}