Add HAL UART implementation

include/sta/hal/uart.hpp

@@ -0,0 +1,53 @@
+/**
+ * @brief Implementation for UART using HAL.
+ *
+ * Define STA_HAL_UART_ENABLE in <sta/config.hpp> to enable.
+ *
+ * To enable the global DebugSerial instance (example using UART1) define:
+ *   #define STA_HAL_UART_DEBUG huart1
+ */
+#ifndef STA_HAL_UART_HPP
+#define STA_HAL_UART_HPP
+
+#include <sta/config.hpp>
+#ifdef STA_HAL_UART_ENABLE
+
+#include <sta/uart.hpp>
+
+#include <main.h>
+
+
+namespace sta
+{
+	/**
+	 * @brief Implementation of UART for HAL.
+	 */
+	class HalUART : public UART
+	{
+	public:
+		/**
+		 * @param handle    UART handle
+		 */
+		HalUART(UART_HandleTypeDef * handle);
+
+		using UART::print;
+
+		void write(const uint8_t * buffer, size_t size) override;
+
+	private:
+		UART_HandleTypeDef * handle_;   /**< UART handle */
+	};
+
+
+#ifdef STA_HAL_UART_DEBUG
+	/**
+	 * @brief Global UART instance for debug output.
+	 */
+	extern HalUART DebugSerial;
+#endif // STA_HAL_UART_DEBUG
+} // namespace sta
+
+
+#endif // STA_HAL_UART_ENABLE
+
+#endif // STA_HAL_UART_HPP