Add extra check for OUT ZLP in the CDC Device Class driver service task to...

Add extra check for OUT ZLP in the CDC Device Class driver service task to quickly clear zero-length termination packets from the host.

LUFA/Drivers/USB/Class/Device/CDC.c

@@ -118,6 +118,11 @@ void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)
 	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
 	  return;
 
+	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);
+
+	if (Endpoint_IsOUTReceived() && !(Endpoint_BytesInEndpoint()))
+	  Endpoint_ClearOUT();
+	  
 	CDC_Device_Flush(CDCInterfaceInfo);
 }
 

LUFA/ManPages/FutureChanges.txt

@@ -12,9 +12,7 @@
   *  or post your suggestion as an enhancement request to the project bug tracker.
   *
   *  <b>Targeted for This Release:</b>
-  *  - Finish Host Mode Class Drivers, re-enable in makefile, add demo summaries
-  *      (S) HID
-  *      ( ) Still Image
+  *  - Finish HID and Still Image Host Mode Class Drivers, add demo summaries, add return codes to all relevant functions
   *  - Add overviews of each of the officially supported boards to the manual
   *  - Re-add in flip, flip-ee, dfu and dfu-ee targets to project makefiles
   *  - Add in new invalid event hook check targets to project makefiles