Changed the signature of the CALLBACK_USB_GetDescriptor() callback function so that the descriptor pointer is const, to remove the need for extra casting inside the callback (thanks to Jonathan Kollasch).

Bootloaders/CDC/Descriptors.c

@@ -203,33 +203,33 @@ USB_Descriptor_String_t ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			if (!(DescriptorNumber))
 			{
-				Address = (void*)&LanguageString;
+				Address = &LanguageString;
 				Size    = LanguageString.Header.Size;
 			}
 			else
 			{
-				Address = (void*)&ProductString;
+				Address = &ProductString;
 				Size    = ProductString.Header.Size;
 			}
 			

Bootloaders/CDC/Descriptors.h

@@ -142,6 +142,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Bootloaders/DFU/Descriptors.c

@@ -145,13 +145,13 @@ USB_Descriptor_String_t ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{

Bootloaders/DFU/Descriptors.h

@@ -168,6 +168,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/AudioInput/Descriptors.c

@@ -273,37 +273,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/AudioInput/Descriptors.h

@@ -78,6 +78,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/AudioOutput/Descriptors.c

@@ -273,37 +273,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/AudioOutput/Descriptors.h

@@ -78,6 +78,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.c

@@ -340,37 +340,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.h

@@ -98,6 +98,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/GenericHID/Descriptors.c

@@ -191,48 +191,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_GenericHID;
+			Address = &ConfigurationDescriptor.HID_GenericHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&GenericReport;
+			Address = &GenericReport;
 			Size    = sizeof(GenericReport);
 			break;
 	}

Demos/Device/ClassDriver/GenericHID/Descriptors.h

@@ -68,6 +68,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 											
 #endif

Demos/Device/ClassDriver/Joystick/Descriptors.c

@@ -201,48 +201,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_JoystickHID;
+			Address = &ConfigurationDescriptor.HID_JoystickHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&JoystickReport;
+			Address = &JoystickReport;
 			Size    = sizeof(JoystickReport);
 			break;
 	}

Demos/Device/ClassDriver/Joystick/Descriptors.h

@@ -65,7 +65,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress)
+		                                    const void** const DescriptorAddress)
 		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/Keyboard/Descriptors.c

@@ -205,48 +205,50 @@ USB_Descriptor_String_t PROGMEM ProductString =
  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
  *  USB host.
  */
-uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint8_t wIndex,
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_KeyboardHID;
+			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&KeyboardReport;
+			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
 	}

Demos/Device/ClassDriver/Keyboard/Descriptors.h

@@ -65,6 +65,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/KeyboardMouse/Descriptors.c

@@ -277,37 +277,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
@@ -316,24 +316,24 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		case DTYPE_HID: 
 			if (!(wIndex))
 			{
-				Address = (void*)&ConfigurationDescriptor.HID1_KeyboardHID;
+				Address = &ConfigurationDescriptor.HID1_KeyboardHID;
 				Size    = sizeof(USB_HID_Descriptor_t);
 			}
 			else
 			{
-				Address = (void*)&ConfigurationDescriptor.HID2_MouseHID;
+				Address = &ConfigurationDescriptor.HID2_MouseHID;
 				Size    = sizeof(USB_HID_Descriptor_t);			
 			}
 			break;
 		case DTYPE_Report: 
 			if (!(wIndex))
 			{
-				Address = (void*)&KeyboardReport;
+				Address = &KeyboardReport;
 				Size    = sizeof(KeyboardReport);
 			}
 			else
 			{			
-				Address = (void*)&MouseReport;
+				Address = &MouseReport;
 				Size    = sizeof(MouseReport);
 			}
 			

Demos/Device/ClassDriver/KeyboardMouse/Descriptors.h

@@ -71,6 +71,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/MIDI/Descriptors.c

@@ -285,37 +285,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/MIDI/Descriptors.h

@@ -77,6 +77,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/MassStorage/Descriptors.c

@@ -176,37 +176,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/MassStorage/Descriptors.h

@@ -68,6 +68,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c

@@ -256,48 +256,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID:
-			Address = (void*)&ConfigurationDescriptor.HID_KeyboardHID;
+			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report:
-			Address = (void*)&KeyboardReport;
+			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
 	}

Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/Mouse/Descriptors.c

@@ -201,48 +201,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_MouseHID;
+			Address = &ConfigurationDescriptor.HID_MouseHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&MouseReport;
+			Address = &MouseReport;
 			Size    = sizeof(MouseReport);
 			break;
 	}

Demos/Device/ClassDriver/Mouse/Descriptors.h

@@ -65,6 +65,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/RNDISEthernet/Descriptors.c

@@ -214,37 +214,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/RNDISEthernet/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/VirtualSerial/Descriptors.c

@@ -226,37 +226,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*          Address = NULL;
+	const void* Address = NULL;
-	uint16_t       Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/ClassDriver/VirtualSerial/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.c

@@ -313,48 +313,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*          Address = NULL;
+	const void* Address = NULL;
-	uint16_t       Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_MouseHID;
+			Address = &ConfigurationDescriptor.HID_MouseHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&MouseReport;
+			Address = &MouseReport;
 			Size    = sizeof(MouseReport);
 			break;
 	}

Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.h

@@ -90,6 +90,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/Incomplete/Sideshow/Descriptors.c

@@ -156,48 +156,48 @@ USB_OSCompatibleIDDescriptor_t PROGMEM DevCompatIDs =
 
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 				case 0x03:
-					Address = (void*)&SerialNumberString;
+					Address = &SerialNumberString;
 					Size    = pgm_read_byte(&SerialNumberString.Header.Size);
 					break;
 				case 0xEE:
 					/* A Microsoft-proprietary extension. String address 0xEE is used by Windows for
 					   "OS Descriptors", which in this case allows us to indicate that our device is
 					   Sideshow compatible regardless of VID/PID values. */
-					Address = (void*)&OSDescriptorString;
+					Address = &OSDescriptorString;
 					Size    = pgm_read_byte(&OSDescriptorString.Header.Size);
 					break;
 			}
@@ -211,7 +211,7 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 
 uint16_t USB_GetOSFeatureDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	void*    Address = NULL;
 	uint16_t Size    = NO_DESCRIPTOR;

Demos/Device/Incomplete/Sideshow/Descriptors.h

@@ -87,10 +87,12 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 		uint16_t USB_GetOSFeatureDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/Incomplete/TestAndMeasurement/Descriptors.c

@@ -187,37 +187,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*          Address = NULL;
+	const void* Address = NULL;
-	uint16_t       Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/Incomplete/TestAndMeasurement/Descriptors.h

@@ -75,6 +75,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/AudioInput/Descriptors.c

@@ -274,37 +274,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/AudioInput/Descriptors.h

@@ -314,6 +314,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/AudioOutput/Descriptors.c

@@ -274,37 +274,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/AudioOutput/Descriptors.h

@@ -314,6 +314,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/DualVirtualSerial/Descriptors.c

@@ -340,37 +340,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
-
+	
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/DualVirtualSerial/Descriptors.h

@@ -112,6 +112,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/GenericHID/Descriptors.c

@@ -201,48 +201,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_GenericHID;
+			Address = &ConfigurationDescriptor.HID_GenericHID;
 			Size    = sizeof(USB_Descriptor_HID_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&GenericReport;
+			Address = &GenericReport;
 			Size    = sizeof(GenericReport);
 			break;
 	}

Demos/Device/LowLevel/GenericHID/Descriptors.h

@@ -96,6 +96,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/Joystick/Descriptors.c

@@ -201,48 +201,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_JoystickHID;
+			Address = &ConfigurationDescriptor.HID_JoystickHID;
 			Size    = sizeof(USB_Descriptor_HID_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&JoystickReport;
+			Address = &JoystickReport;
 			Size    = sizeof(JoystickReport);
 			break;
 	}

Demos/Device/LowLevel/Joystick/Descriptors.h

@@ -89,6 +89,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/Keyboard/Descriptors.c

@@ -218,48 +218,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_KeyboardHID;
+			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_Descriptor_HID_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&KeyboardReport;
+			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
 	}

Demos/Device/LowLevel/Keyboard/Descriptors.h

@@ -94,6 +94,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/KeyboardMouse/Descriptors.c

@@ -288,37 +288,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
@@ -327,24 +327,24 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		case DTYPE_HID: 
 			if (!(wIndex))
 			{
-				Address = (void*)&ConfigurationDescriptor.HID1_KeyboardHID;
+				Address = &ConfigurationDescriptor.HID1_KeyboardHID;
 				Size    = sizeof(USB_Descriptor_HID_t);
 			}
 			else
 			{
-				Address = (void*)&ConfigurationDescriptor.HID2_MouseHID;
+				Address = &ConfigurationDescriptor.HID2_MouseHID;
 				Size    = sizeof(USB_Descriptor_HID_t);			
 			}
 			break;
 		case DTYPE_Report: 
 			if (!(wIndex))
 			{
-				Address = (void*)&KeyboardReport;
+				Address = &KeyboardReport;
 				Size    = sizeof(KeyboardReport);
 			}
 			else
 			{			
-				Address = (void*)&MouseReport;
+				Address = &MouseReport;
 				Size    = sizeof(MouseReport);
 			}
 			

Demos/Device/LowLevel/KeyboardMouse/Descriptors.h

@@ -100,6 +100,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/MIDI/Descriptors.c

@@ -285,37 +285,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/MIDI/Descriptors.h

@@ -185,6 +185,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/MassStorage/Descriptors.c

@@ -176,37 +176,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/MassStorage/Descriptors.h

@@ -67,6 +67,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/Mouse/Descriptors.c

@@ -201,37 +201,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/Mouse/Descriptors.h

@@ -89,6 +89,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/RNDISEthernet/Descriptors.c

@@ -214,37 +214,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/RNDISEthernet/Descriptors.h

@@ -93,6 +93,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/Device/LowLevel/VirtualSerial/Descriptors.c

@@ -226,37 +226,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*          Address = NULL;
+	const void* Address = NULL;
-	uint16_t       Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Demos/Device/LowLevel/VirtualSerial/Descriptors.h

@@ -93,6 +93,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Demos/DualRole/ClassDriver/MouseHostDevice/Descriptors.c

@@ -201,48 +201,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_MouseHID;
+			Address = &ConfigurationDescriptor.HID_MouseHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&MouseReport;
+			Address = &MouseReport;
 			Size    = sizeof(MouseReport);
 			break;
 	}

Demos/DualRole/ClassDriver/MouseHostDevice/Descriptors.h

@@ -65,6 +65,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

LUFA/Drivers/USB/HighLevel/DeviceStandardReq.c

@@ -254,8 +254,8 @@ static void USB_Device_GetInternalSerialDescriptor(void)
 
 static void USB_Device_GetDescriptor(void)
 {
-	void*    DescriptorPointer;
+	const void* DescriptorPointer;
-	uint16_t DescriptorSize;
+	uint16_t    DescriptorSize;
 	
 	#if !defined(USE_FLASH_DESCRIPTORS) && !defined(USE_EEPROM_DESCRIPTORS) && !defined(USE_RAM_DESCRIPTORS)
 	uint8_t  DescriptorAddressSpace;

LUFA/Drivers/USB/LowLevel/Device.h

@@ -187,7 +187,7 @@
 			 */
 			uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			                                    const uint8_t wIndex,
-			                                    void** const DescriptorAddress
+			                                    const void** const DescriptorAddress
 			#if !defined(USE_FLASH_DESCRIPTORS) && !defined(USE_EEPROM_DESCRIPTORS) && !defined(USE_RAM_DESCRIPTORS)
 			                                    , uint8_t* MemoryAddressSpace
 			#endif

LUFA/ManPages/ChangeLog.txt

@@ -24,6 +24,8 @@
   *  - Changed all Device mode LowLevel demos and Device Class drivers so that the control request is acknowledged and any data
   *    transferred as quickly as possible without any processing inbetween sections, so that long callbacks or event handlers will
   *    not break communications with the host by exceeding the maximum control request stage timeout period
+  *  - Changed the signature of the CALLBACK_USB_GetDescriptor() callback function so that the descriptor pointer is const, to remove
+  *    the need for extra casting inside the callback (thanks to Jonathan Kollasch)
   *
   *  <b>Fixed:</b>
   *  - Fixed USB_GetHIDReportItemInfo() function modifying the given report item's data when the report item does not exist

LUFA/ManPages/MigrationInformation.txt

@@ -18,6 +18,11 @@
  *    - A new USB driver source file, Drivers/USB/HighLevel/PipeStream.c now exists. This source file should be added to all
  *      project makefiles using the USB driver of LUFA, or the makefile should be updated to use the new module source variables.
  *
+ *  <b>Device Mode</b>
+ *    - The signature for the CALLBACK_USB_GetDescriptor() callback has changed, the "void** const DescriptorAddress" parameter is
+ *      now "const void** const DescriptorAddress". Existing applications should update their callback signatures to match this, and
+ *      eliminate any casting of descriptor pointers to a non-const pointer.
+ *
  * \section Sec_Migration100807 Migrating from 100513 to 100807
  *
  *  <b>Non-USB Library Components</b>

Projects/AVRISP-MKII/Descriptors.c

@@ -174,41 +174,41 @@ USB_Descriptor_String_t PROGMEM SerialString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 	
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 				case 0x03:
-					Address = (void*)&SerialString;
+					Address = &SerialString;
 					Size    = pgm_read_byte(&SerialString.Header.Size);
 					break;					
 			}

Projects/AVRISP-MKII/Descriptors.h

@@ -75,6 +75,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/Benito/Descriptors.c

@@ -214,37 +214,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/Benito/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/Incomplete/MIDIToneGenerator/Descriptors.c

@@ -285,37 +285,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/Incomplete/MIDIToneGenerator/Descriptors.h

@@ -77,6 +77,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/Incomplete/StandaloneProgrammer/Descriptors.c

@@ -178,37 +178,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/Incomplete/StandaloneProgrammer/Descriptors.h

@@ -84,6 +84,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/LEDNotifier/Descriptors.c

@@ -226,37 +226,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*          Address = NULL;
+	const void* Address = NULL;
-	uint16_t       Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/LEDNotifier/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/Magstripe/Descriptors.c

@@ -198,48 +198,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID:
-			Address = (void*)&ConfigurationDescriptor.HID_KeyboardHID;
+			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report:
-			Address = (void*)&KeyboardReport;
+			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
 	}

Projects/Magstripe/Descriptors.h

@@ -66,6 +66,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/RelayBoard/Descriptors.c

@@ -155,41 +155,41 @@ USB_Descriptor_String_t PROGMEM RelayBoard_SerialString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device:
-			Address = (void*)&RelayBoard_DeviceDescriptor;
+			Address = &RelayBoard_DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration:
-			Address = (void*)&RelayBoard_ConfigurationDescriptor;
+			Address = &RelayBoard_ConfigurationDescriptor;
 			Size    = sizeof(RelayBoard_USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
 				case 0x00:
-					Address = (void*)&RelayBoard_LanguageString;
+					Address = &RelayBoard_LanguageString;
 					Size    = pgm_read_byte(&RelayBoard_LanguageString.Header.Size);
 					break;
 				case 0x01:
-					Address = (void*)&RelayBoard_ManufacturerString;
+					Address = &RelayBoard_ManufacturerString;
 					Size    = pgm_read_byte(&RelayBoard_ManufacturerString.Header.Size);
 					break;
 				case 0x02:
-					Address = (void*)&RelayBoard_ProductString;
+					Address = &RelayBoard_ProductString;
 					Size    = pgm_read_byte(&RelayBoard_ProductString.Header.Size);
 					break;
 				case 0x03:
-					Address = (void*)&RelayBoard_SerialString;
+					Address = &RelayBoard_SerialString;
 					Size    = pgm_read_byte(&RelayBoard_SerialString.Header.Size);
 					break;
 			}

Projects/RelayBoard/Descriptors.h

@@ -41,7 +41,6 @@
 		#include <avr/pgmspace.h>
 		#include <LUFA/Drivers/USB/USB.h>
 
-
 	/* Type Defines: */
 		/** Type define for the device configuration descriptor structure. This must be defined in the
 		 *  application code, as the configuration descriptor contains several sub-descriptors which
@@ -56,6 +55,6 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress);
+		                                    const void** const DescriptorAddress)
-
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 #endif

Projects/TempDataLogger/Descriptors.c

@@ -239,48 +239,48 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}
 			
 			break;
 		case DTYPE_HID: 
-			Address = (void*)&ConfigurationDescriptor.HID_GenericHID;
+			Address = &ConfigurationDescriptor.HID_GenericHID;
 			Size    = sizeof(USB_HID_Descriptor_t);
 			break;
 		case DTYPE_Report: 
-			Address = (void*)&GenericReport;
+			Address = &GenericReport;
 			Size    = sizeof(GenericReport);
 			break;
 	}

Projects/TempDataLogger/Descriptors.h

@@ -56,6 +56,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/USBtoSerial/Descriptors.c

@@ -226,37 +226,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/USBtoSerial/Descriptors.h

@@ -79,6 +79,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/Webserver/Descriptors.c

@@ -174,37 +174,39 @@ USB_Descriptor_String_t PROGMEM ProductString =
  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
  *  USB host.
  */
-uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint8_t wIndex,
+                                    const void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);
 	const uint8_t  DescriptorNumber = (wValue & 0xFF);
 
-	void*    Address = NULL;
+	const void* Address = NULL;
-	uint16_t Size    = NO_DESCRIPTOR;
+	uint16_t    Size    = NO_DESCRIPTOR;
 
 	switch (DescriptorType)
 	{
 		case DTYPE_Device: 
-			Address = (void*)&DeviceDescriptor;
+			Address = &DeviceDescriptor;
 			Size    = sizeof(USB_Descriptor_Device_t);
 			break;
 		case DTYPE_Configuration: 
-			Address = (void*)&ConfigurationDescriptor;
+			Address = &ConfigurationDescriptor;
 			Size    = sizeof(USB_Descriptor_Configuration_t);
 			break;
 		case DTYPE_String: 
 			switch (DescriptorNumber)
 			{
 				case 0x00: 
-					Address = (void*)&LanguageString;
+					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
 				case 0x01: 
-					Address = (void*)&ManufacturerString;
+					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
 				case 0x02: 
-					Address = (void*)&ProductString;
+					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;
 			}

Projects/Webserver/Descriptors.h

@@ -68,6 +68,7 @@
 	/* Function Prototypes: */
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif

Projects/XPLAINBridge/XPLAINBridge.c

@@ -249,7 +249,7 @@ void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCI
  */
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                     const uint8_t wIndex,
-                                    void** const DescriptorAddress)
+                                    const void** const DescriptorAddress)
 {
 	/* Return the correct descriptors based on the selected mode */
 	if (CurrentFirmwareMode == MODE_USART_BRIDGE)

Projects/XPLAINBridge/XPLAINBridge.h

@@ -95,6 +95,7 @@
 
 		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		                                    const uint8_t wIndex,
-		                                    void** const DescriptorAddress) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
 
 #endif