Added first implementations for Arduino

include/sta/devices/arduino/gpio_pin.hpp

@@ -0,0 +1,44 @@
+/**
+ * @file
+ * @brief Wrapper for Arduino GPIO pins.
+ */
+#ifndef STA_CORE_ARDUINO_GPIO_PIN_HPP
+#define STA_CORE_ARDUINO_GPIO_PIN_HPP
+
+// Only enable module on Arduino platform w/ HAL GPIO module enabled
+#include <sta/config.hpp>
+
+#if defined(STA_PLATFORM_ARDUINO) || defined(DOXYGEN)
+
+#include <sta/gpio_pin.hpp>
+#include <cstdint>
+
+namespace sta
+{
+    class ArduinoGpioPin : public GpioPin
+	{
+	public:
+		/**
+		 * @param port  GPIO port
+		 * @param pin   Pin index
+		 */
+		ArduinoGpioPin(uint16_t pin);
+
+		void setState(GpioPinState state) override;
+
+        GpioPinState getState() override;
+
+		/**
+		 * @brief Get pin index for pin.
+		 *
+		 * @return Pin index
+		 */
+		uint16_t getPin() const;
+	private:
+		uint16_t pin_;          /**< GPIO pin */
+	};
+} // namespace sta
+
+#endif // STA_ARDUINO_GPIO_ENABLED
+
+#endif // STA_CORE_ARDUINO_GPIO_PIN_HPP