1 files changed, 40 insertions, 21 deletions

diff --git a/Demos/Device/LowLevel/DualVirtualSerial/Descriptors.h b/Demos/Device/LowLevel/DualVirtualSerial/Descriptors.h
index 64c44a05a..aa1a8beaa 100644
--- a/Demos/Device/LowLevel/DualVirtualSerial/Descriptors.h
+++ b/Demos/Device/LowLevel/DualVirtualSerial/Descriptors.h
@@ -42,21 +42,6 @@
 		#include <avr/pgmspace.h>
 		
 	/* Macros: */
-		/** Macro to define a CDC class-specific functional descriptor. CDC functional descriptors have a
-		 *  uniform structure but variable sized data payloads, thus cannot be represented accurately by
-		 *  a single typedef struct. A macro is used instead so that functional descriptors can be created
-		 *  easily by specifying the size of the payload. This allows sizeof() to work correctly.
-		 *
-		 *  \param[in] DataSize  Size in bytes of the CDC functional descriptor's data payload
-		 */
-		#define CDC_FUNCTIONAL_DESCRIPTOR(DataSize)        \
-		     struct                                        \
-		     {                                             \
-		          USB_Descriptor_Header_t Header;          \
-			      uint8_t                 SubType;         \
-		          uint8_t                 Data[DataSize];  \
-		     }
-
 		/** Endpoint number of the first CDC interface's device-to-host notification IN endpoint. */
 		#define CDC1_NOTIFICATION_EPNUM        3
 
@@ -82,6 +67,40 @@
 		#define CDC_TXRX_EPSIZE                16	
 
 	/* Type Defines: */
+		/** Type define for a CDC class-specific functional header descriptor. This indicates to the host that the device
+		 *  contains one or more CDC functional data descriptors, which give the CDC interface's capabilities and configuration.
+		 *  See the CDC class specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+			uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors. */
+			uint16_t                CDCSpecification; /**< Version number of the CDC specification implemented by the device,
+			                                           *   encoded in BCD format.
+			                                           */
+		} USB_Descriptor_CDC_FunctionalHeader_t;
+
+		/** Type define for a CDC class-specific functional ACM descriptor. This indicates to the host that the CDC interface
+		 *  supports the CDC ACM subclass of the CDC specification. See the CDC class specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+			uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors. */
+			uint8_t                 Capabilities; /**< Capabilities of the ACM interface, given as a bit mask. */
+		} USB_Descriptor_CDC_FunctionalACM_t;
+		
+		/** Type define for a CDC class-specific functional Union descriptor. This indicates to the host that specific
+		 *  CDC control and data interfaces are related. See the CDC class specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
+			uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors. */
+			uint8_t                 MasterInterfaceNumber; /**< Interface number of the CDC Control interface. */
+			uint8_t                 SlaveInterfaceNumber; /**< Interface number of the CDC Data interface. */
+		} USB_Descriptor_CDC_FunctionalUnion_t;
+
 		/** 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
 		 *  vary between devices, and which describe the device's usage to the host.
@@ -91,18 +110,18 @@
 			USB_Descriptor_Configuration_Header_t    Config;
 			USB_Descriptor_Interface_Association_t   CDC1_IAD;
 			USB_Descriptor_Interface_t               CDC1_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC1_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC1_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC1_Functional_Union;
+			USB_Descriptor_CDC_FunctionalHeader_t    CDC1_Functional_Header;
+			USB_Descriptor_CDC_FunctionalACM_t       CDC1_Functional_ACM;
+			USB_Descriptor_CDC_FunctionalUnion_t     CDC1_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC1_ManagementEndpoint;
 			USB_Descriptor_Interface_t               CDC1_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC1_DataOutEndpoint;
 			USB_Descriptor_Endpoint_t                CDC1_DataInEndpoint;
 			USB_Descriptor_Interface_Association_t   CDC2_IAD;
 			USB_Descriptor_Interface_t               CDC2_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC2_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC2_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC2_Functional_Union;
+			USB_Descriptor_CDC_FunctionalHeader_t    CDC2_Functional_Header;
+			USB_Descriptor_CDC_FunctionalACM_t       CDC2_Functional_ACM;
+			USB_Descriptor_CDC_FunctionalUnion_t     CDC2_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC2_ManagementEndpoint;
 			USB_Descriptor_Interface_t               CDC2_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC2_DataOutEndpoint;