gpio_relay.h

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#pragma once
 
#include <Arduino.h>
 
#include "roo_control/switch/switch.h"
 
namespace roo_control {
 
/// Simple, raw, Arduino GPIO-pin-controlled relay switch.
class GpioRelay : public BinarySwitch {
 public:
  GpioRelay(uint8_t pin, BinaryLogicalState initial_state = BINARY_STATE_LOW)
      : pin_(pin) {
    pinMode(pin_, OUTPUT);
    digitalWrite(pin_, initial_state);
  }
 
  bool setState(BinaryLogicalState state) override {
    digitalWrite(pin_, state);
    return digitalRead(pin_) == state;
  }
 
  bool getState(BinaryLogicalState& result) const override {
    result = (BinaryLogicalState)digitalRead(pin_);
    return true;
  }
 
 private:
  uint8_t pin_;
};
 
}  // namespace roo_control