Added I2C support for raspi & first rework of debugging

include/sta/devices/stm32/gpio_pin.hpp

@@ -0,0 +1,113 @@
+/**
+ * @file
+ * @brief Wrapper for STM32 GPIO pins.
+ */
+#ifndef STA_CORE_STM32_GPIO_PIN_HPP
+#define STA_CORE_STM32_GPIO_PIN_HPP
+
+
+// Only enable module on STM32 platform w/ HAL GPIO module enabled
+#include <sta/config.hpp>
+#ifdef STA_PLATFORM_STM32
+#  include <sta/stm32/hal.hpp>
+#  ifdef HAL_GPIO_MODULE_ENABLED
+#    define STA_STM32_GPIO_ENABLED
+#  endif // HAL_GPIO_MODULE_ENABLED
+#endif // STA_PLATFORM_STM32
+
+
+#if defined(STA_STM32_GPIO_ENABLED) || defined(DOXYGEN)
+
+#include <sta/gpio_pin.hpp>
+
+
+/**
+ * @defgroup sta_core_stm32_gpio GPIO
+ * @ingroup sta_core_stm32
+ * @brief STM32 GPIO module.
+ */
+
+
+namespace sta
+{
+    /**
+     * @ingroup sta_core_stm32_gpio
+     * @{
+     */
+
+
+    /**
+     * @brief Container for STM GPIO Pin data.
+     */
+    class STM32GpioPin : public GpioPin
+    {
+    public:
+        /**
+         * @param port  GPIO port
+         * @param pin   Pin index
+         */
+        STM32GpioPin(GPIO_TypeDef * port, uint16_t pin);
+
+        void setState(GpioPinState state) override;
+
+        /**
+         * @brief Get GPIO port for pin.
+         *
+         * @return GPIO port
+         */
+        GPIO_TypeDef * getPort() const;
+        /**
+         * @brief Get pin index for pin.
+         *
+         * @return Pin index
+         */
+        uint16_t getPin() const;
+        /**
+         * @brief Get GPIO port index for pin.
+         *
+         * @return GPIO port index
+         */
+        uint8_t getPortIndex() const;
+
+    private:
+        GPIO_TypeDef * port_;   /**< GPIO port */
+        uint16_t pin_;          /**< GPIO pin */
+    };
+
+
+    /**
+     * @brief Interrupt trigger edge.
+     */
+    enum class InterruptEdge
+    {
+        RISING,     /**< Rising edge */
+        FALLING,    /**< Falling edge */
+        BOTH        /**< Rising and falling edge */
+    };
+
+    /**
+     * @brief Check pin EXIT pin configuration.
+     *
+     * @param pin   GPIO pin
+     * @param edge  Interrupt trigger edge
+     * @return      True if EXIT pin and trigger edge matches
+     */
+    bool isInterruptEdge(const STM32GpioPin & pin, InterruptEdge edge);
+
+
+    /** @} */
+} // namespace sta
+
+/**
+ * @brief Create STM32GpioPin object from pin label.
+ *
+ * @param label     Pin label
+ *
+ * @ingroup sta_core_stm32_gpio
+ */
+#define STA_STM32_GPIO_PIN(label) sta::STM32GpioPin{label##_GPIO_Port, label##_Pin}
+
+
+#endif // STA_STM32_GPIO_ENABLED
+
+#endif // STA_CORE_STM32_GPIO_PIN_HPP