Added doxyfile (doxygen) for the common folder. Started with doxygen comments for app and tft module.

common/app/app.h

@@ -1,2 +1,30 @@
+/**
+ * @defgroup app Application
+ * The App Module contains the effective, platform independent application.
+ */
+
+
+/**
+ * @addtogroup app
+ */
+/*@{*/
+
+/**
+ * Starts/Initializes the app
+ * This function should be called at the top of the main function of your platform
+ */
 void app_init();
+
+/**
+ * Executes one cycle of the app
+ * Call this function repeatedly from a loop inside the main function
+ */
 void app_process();
+
+/**
+ * @defgroup screens Screens
+ * The Screens of the application. \sa Screen
+ */
+
+
+/*@}*/

common/app/screen_filetest.c

@@ -7,7 +7,6 @@
 
 static BUTTON_STRUCT b_back;
 
-
 static void b_back_cb(void* button) {
         gui_screen_back();
 }

common/app/screen_filetest.h

@@ -1,3 +1,22 @@
 #include "screen.h"
 
+/**
+ * @addtogroup screens
+ */
+/*@{*/
+
+/**
+ * @defgroup filetest Filetest
+ * The File-Test Screen tests the filesystem module. It read/writes from/to files and shows a bitmap
+ */
+/*@{*/
+
+
+/**
+ * Returns a pointer to the filetest screen
+ * \sa gui_screen_navigate
+ * @return
+ */
 SCREEN_STRUCT* get_screen_filetest();
+
+/*@}@}*/

common/app/screen_guitest.h

@@ -1,3 +1,23 @@
 #include "screen.h"
 
+
+/**
+ * @addtogroup screens
+ */
+/*@{*/
+
+/**
+ * @defgroup guitest Guitest
+ * The Gui-Test Screen tests the gui and the tft module.
+ */
+/*@{*/
+
+
+/**
+ * Returns a pointer to the guitest screen
+ * \sa gui_screen_navigate
+ * @return
+ */
 SCREEN_STRUCT* get_screen_guitest();
+
+/*@}@}*/

common/app/screen_main.h

@@ -1,3 +1,22 @@
 #include "screen.h"
 
+/**
+ * @addtogroup screens
+ */
+/*@{*/
+
+/**
+ * @defgroup main Main
+ * The Main Screen is the start-screen for the application
+ */
+/*@{*/
+
+
+/**
+ * Returns a pointer to the main screen
+ * \sa gui_screen_navigate
+ * @return
+ */
 SCREEN_STRUCT* get_screen_main();
+
+/*@}@}*/

common/app/screen_pixytest.h

@@ -1,3 +1,21 @@
 #include "screen.h"
 
+/**
+ * @addtogroup screens
+ */
+/*@{*/
+
+/**
+ * @defgroup pixytest Pixytest
+ * The Pixy-Test Screen tests the pixy module.
+ */
+/*@{*/
+
+/**
+ * Returns a pointer to the pixytest screen
+ * \sa gui_screen_navigate
+ * @return
+ */
 SCREEN_STRUCT* get_screen_pixytest();
+
+/*@}@}*/