Minor Doxygen documentation improvements.

Add missing ATTR_NON_NULL_PTR_ARG and const decorations.

LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Buttons.h

@@ -37,7 +37,7 @@
  */
 
 /** \ingroup Group_Buttons
- *  \defgroup Group_Buttons_A3BU_XPLAINED XMEGA A3BU Xplained.
+ *  \defgroup Group_Buttons_A3BU_XPLAINED A3BU_XPLAINED
  *  \brief Board specific Buttons driver header for the Atmel XMEGA A3BU Xplained.
  *
  *  Board specific Buttons driver header for the Atmel XMEGA A3BU Xplained.

LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h

@@ -37,7 +37,7 @@
  */
 
 /** \ingroup Group_Dataflash
- *  \defgroup Group_Dataflash_A3BU_XPLAINED XMEGA A3BU Xplained.
+ *  \defgroup Group_Dataflash_A3BU_XPLAINED A3BU_XPLAINED
  *  \brief Board specific Dataflash driver header for the Atmel XMEGA A3BU Xplained.
  *
  *  Board specific Dataflash driver header for the Atmel XMEGA A3BU Xplained board.

LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/LEDs.h

@@ -37,7 +37,7 @@
  */
 
 /** \ingroup Group_LEDs
- *  \defgroup Group_LEDs_A3BU_XPLAINED XMEGA A3BU Xplained
+ *  \defgroup Group_LEDs_A3BU_XPLAINED A3BU_XPLAINED
  *  \brief Board specific LED driver header for the Atmel XMEGA A3BU Xplained.
  *
  *  Board specific LED driver header for the Atmel XMEGA A3BU Xplained.

LUFA/Drivers/Misc/TerminalCodes.h

@@ -79,7 +79,7 @@
 				#define ANSI_ESCAPE_SEQUENCE(EscapeSeq)
 			#endif
 
-			/** \name Text Display Modifier Escape Sequences */
+			/** \name Text Display Modifier Control Sequences */
 			//@{
 			/** Turns on bold so that any following text is printed to the terminal in bold. */
 			#define ESC_BOLD_ON                     ANSI_ESCAPE_SEQUENCE("1m")

LUFA/Drivers/Peripheral/AVR8/ADC_AVR8.h

@@ -177,7 +177,7 @@
 			/** MUX mask define for the ADC1 channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading(). */
 			#define ADC_CHANNEL1                    (0x01 << MUX0)
 
-			#if !(defined(__AVR_ATmega16U4__)  || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
+			#if (!(defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)) || defined(__DOXYGEN__))
 				/** MUX mask define for the ADC2 channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading().
 				 *
 				 *  \note Not available on all AVR models.
@@ -203,9 +203,6 @@
 			/** MUX mask define for the ADC7 channel of the ADC. See \ref ADC_StartReading and \ref ADC_GetChannelReading. */
 			#define ADC_CHANNEL7                    (0x07 << MUX0)
 
-			/** MUX mask define for the internal 1.1V bandgap channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading(). */
-			#define ADC_1100MV_BANDGAP              (0x1E << MUX0)
-
 			#if (defined(__AVR_ATmega16U4__)  || defined(__AVR_ATmega32U4__) || defined(__DOXYGEN__))
 				/** MUX mask define for the ADC8 channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading().
 				 *
@@ -251,6 +248,9 @@
 				#define ADC_INT_TEMP_SENS           ((1 << 8) | (0x07 << MUX0))
 			#endif
 
+			/** MUX mask define for the internal 1.1V bandgap channel of the ADC. See \ref ADC_StartReading() and \ref ADC_GetChannelReading(). */
+			#define ADC_1100MV_BANDGAP              (0x1E << MUX0)
+
 			/** Retrieves the ADC MUX mask for the given ADC channel number.
 			 *
 			 *  \note This macro will only work correctly on channel numbers that are compile-time
@@ -422,8 +422,8 @@
 			 *
 			 *  \param[in] Mode  Mask of ADC prescale and mode settings.
 			 */
-			static inline void ADC_Init(uint8_t Mode) ATTR_ALWAYS_INLINE;
-			static inline void ADC_Init(uint8_t Mode)
+			static inline void ADC_Init(const uint8_t Mode) ATTR_ALWAYS_INLINE;
+			static inline void ADC_Init(const uint8_t Mode)
 			{
 				ADCSRA = ((1 << ADEN) | Mode);
 			}

LUFA/Drivers/USB/Core/HostStandardReq.h

@@ -234,6 +234,7 @@
 			 *
 			 *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
 			 */
+			static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr) ATTR_NON_NULL_PTR_ARG(1);
 			static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr)
 			{
 				return USB_Host_GetDescriptor(DTYPE_Device, 0, DeviceDescriptorPtr, sizeof(USB_Descriptor_Device_t));
@@ -255,6 +256,9 @@
 			 *
 			 *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
 			 */
+			static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
+			                                                         void* const Buffer,
+			                                                         const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(2);
 			static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
 			                                                         void* const Buffer,
 			                                                         const uint8_t BufferLength)