relay.h

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/*
 * Copyright 2023 Myron Rodrigues
 *
 * 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.
 */
 
#ifndef _RELAY_H_
#define _RELAY_H_
 
#include <Arduino.h>
 
enum class Switch : bool { ON = HIGH, OFF = LOW };
 
class Relay
{
public:
  virtual void begin(Switch sw) = 0;
 
  virtual void set(Switch state) = 0;
 
  virtual int get_state() = 0;
 
  virtual void toggle() = 0;
};
 
class RelayAH : public Relay
{
private:
  int pin_;
 
public:
  RelayAH(int pin);
 
  void begin(Switch sw);
 
  void set(Switch state);
 
  int get_state();
 
  void toggle();
};
 
// active low
class RelayAL : public Relay
{
private:
  int pin_;
 
public:
  RelayAL(int pin);
 
  void begin(Switch sw);
 
  void set(Switch state);
 
  int get_state();
 
  void toggle();
};
 
#endif