From bf037b03ecb0b162439bbff77f2badc421629a6a Mon Sep 17 00:00:00 2001
From: Henrik Stickann <4376396-Mithradir@users.noreply.gitlab.com>
Date: Sat, 9 Apr 2022 21:47:55 +0200
Subject: [PATCH] Add HAL GPIO pin implementation

---
 include/sta/hal/gpio_pin.hpp | 45 ++++++++++++++++++++++++++++++++++++
 src/hal/gpio_pin.cpp         | 19 +++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 include/sta/hal/gpio_pin.hpp
 create mode 100644 src/hal/gpio_pin.cpp

diff --git a/include/sta/hal/gpio_pin.hpp b/include/sta/hal/gpio_pin.hpp
new file mode 100644
index 0000000..a580635
--- /dev/null
+++ b/include/sta/hal/gpio_pin.hpp
@@ -0,0 +1,45 @@
+/**
+ * @brief Wrapper for HAL GPIO pins.
+ *
+ * Defined STA_HAL_GPIO_ENABLE in <sta/config.hpp> to enable.
+ */
+#ifndef STA_HAL_GPIO_PIN_HPP
+#define STA_HAL_GPIO_PIN_HPP
+
+#include <sta/config.hpp>
+#ifdef STA_HAL_GPIO_ENABLE
+
+#include <sta/gpio_pin.hpp>
+
+#include <main.h>
+
+
+namespace sta
+{
+	/**
+	 * @brief Container for HAL GPIO Pin objects.
+	 */
+	class HalGpioPin : public GpioPin
+	{
+	public:
+		HalGpioPin(GPIO_TypeDef * port, uint16_t pin);
+
+		void setState(GpioPinState state) override;
+
+	private:
+		GPIO_TypeDef * port_;   /**< GPIO port */
+		uint16_t pin_;          /**< GPIO pin */
+	};
+}
+
+/**
+ * @brief Create HalGpioPin object from pin label.
+ *
+ * @param label     Pin label
+ */
+#define STA_HAL_GPIO_PIN(label) sta::HalGpioPin{label##_GPIO_Port, label##_Pin}
+
+
+#endif // STA_HAL_GPIO_ENABLE
+
+#endif // STA_HAL_GPIO_PIN_HPP
diff --git a/src/hal/gpio_pin.cpp b/src/hal/gpio_pin.cpp
new file mode 100644
index 0000000..6a23c87
--- /dev/null
+++ b/src/hal/gpio_pin.cpp
@@ -0,0 +1,19 @@
+#include <sta/hal/gpio_pin.hpp>
+
+#ifdef STA_HAL_GPIO_ENABLE
+
+
+namespace sta
+{
+	HalGpioPin::HalGpioPin(GPIO_TypeDef * port, uint16_t pin)
+		: port_{port}, pin_{pin}
+	{}
+
+	void HalGpioPin::setState(GpioPinState state)
+	{
+		HAL_GPIO_WritePin(port_, pin_, (state == GpioPinState::LOW) ? GPIO_PIN_RESET : GPIO_PIN_SET);
+	}
+} // namespace sta
+
+
+#endif // STA_HAL_GPIO_ENABLE