Break device mode class driver interfaces into seperate config and state structs which are then combined, for clarity. Move device mode class driver interfaces back into the device mode class driver headers from the common class headers to make room for host class interfaces.

Demos/Device/ClassDriver/AudioInput/AudioInput.c

@@ -40,12 +40,20 @@
  *  passed to all Audio Class driver functions, so that multiple instances of the same class
  *  within a device can be differentiated from one another.
  */
-USB_ClassInfo_Audio_t Microphone_Audio_Interface =
+USB_ClassInfo_Audio_Device_t Microphone_Audio_Interface =
 	{
-		.StreamingInterfaceNumber = 1,
+		.Config =
+			{
+				.StreamingInterfaceNumber = 1,
 
-		.DataINEndpointNumber     = AUDIO_STREAM_EPNUM,
-		.DataINEndpointSize       = AUDIO_STREAM_EPSIZE,
+				.DataINEndpointNumber     = AUDIO_STREAM_EPNUM,
+				.DataINEndpointSize       = AUDIO_STREAM_EPSIZE,
+			},
+		
+		.State =
+			{
+				// Leave all state values to their defaults
+			}
 	};
 
 /** Main program entry point. This routine contains the overall program flow, including initial
@@ -59,7 +67,7 @@ int main(void)
 	
 	for (;;)
 	{
-		if (Microphone_Audio_Interface.InterfaceEnabled)
+		if (Microphone_Audio_Interface.State.InterfaceEnabled)
 		  ProcessNextSample();
 
 		Audio_Device_USBTask(&Microphone_Audio_Interface);