Move interfaces to subdir

include/sta/intf/gpio_pin.hpp

@@ -8,7 +8,7 @@
 namespace sta
 {
 	/**
-	 * @brief GPIO pin state
+	 * @brief GPIO pin state.
 	 */
 	enum class GpioPinState
 	{

include/sta/intf/mutex.hpp

@@ -14,11 +14,11 @@ namespace sta
 	{
 	public:
 		/**
-		 * @brief Block until mutex has been acquired
+		 * @brief Block until mutex has been acquired.
 		 */
 		virtual void acquire() = 0;
 		/**
-		 * @brief Release mutex
+		 * @brief Release mutex.
 		 */
 		virtual void release() = 0;
 

include/sta/intf/spi_device.hpp

@@ -4,10 +4,10 @@
 #ifndef STA_SPI_DEVICE_HPP
 #define STA_SPI_DEVICE_HPP
 
-#include <sta/spi_interface.hpp>
+#include <sta/intf/spi_interface.hpp>
 
-#include <cstdint>
 #include <cstddef>
+#include <cstdint>
 
 
 namespace sta

include/sta/intf/spi_interface.hpp

@@ -4,11 +4,11 @@
 #ifndef STA_SPI_INTERFACE_HPP
 #define STA_SPI_INTERFACE_HPP
 
-#include <sta/mutex.hpp>
+#include <sta/intf/mutex.hpp>
 #include <sta/spi_settings.hpp>
 
-#include <cstdint>
 #include <cstddef>
+#include <cstdint>
 
 
 namespace sta

include/sta/intf/time.hpp

@@ -1,3 +1,6 @@
+/**
+ * @brief Signatures for time related functions.
+ */
 #ifndef STA_TIME_HPP
 #define STA_TIME_HPP