Documentation improvements - put driver example code into its own section, fix incorr...

[pub/USBasp.git] / Demos / Host / LowLevel / KeyboardHost / ConfigDescriptor.c

diff --git a/Demos/Host/LowLevel/KeyboardHost/ConfigDescriptor.c b/Demos/Host/LowLevel/KeyboardHost/ConfigDescriptor.c
index bf52a14..01c252c 100644 (file)
--- a/Demos/Host/LowLevel/KeyboardHost/ConfigDescriptor.c
+++ b/Demos/Host/LowLevel/KeyboardHost/ConfigDescriptor.c
@@ -3,7 +3,7 @@
      Copyright (C) Dean Camera, 2010.
 
   dean [at] fourwalledcubicle [dot] com
-      www.fourwalledcubicle.com
+           www.lufa-lib.org
 */
 
 /*
@@ -116,11 +116,15 @@ uint8_t ProcessConfigurationDescriptor(void)
  */
 uint8_t DComp_NextKeyboardInterface(void* CurrentDescriptor)
 {
-       if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+       USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+       if (Header->Type == DTYPE_Interface)
        {
+               USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
                /* Check the HID descriptor class and protocol, break out if correct class/protocol interface found */
-               if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class    == HID_CSCP_HIDClass) &&
-                   (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == HID_CSCP_KeyboardBootProtocol))
+               if ((Interface->Class    == HID_CSCP_HIDClass) &&
+                   (Interface->Protocol == HID_CSCP_KeyboardBootProtocol))
                {
                        return DESCRIPTOR_SEARCH_Found;
                }
@@ -133,23 +137,20 @@ uint8_t DComp_NextKeyboardInterface(void* CurrentDescriptor)
  *  configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration
  *  descriptor processing if an incompatible descriptor configuration is found.
  *
- *  This comparator searches for the next IN Endpoint descriptor inside the current interface descriptor,
- *  aborting the search if another interface descriptor is found before the required endpoint.
+ *  This comparator searches for the next Endpoint descriptor inside the current interface descriptor, aborting the
+ *  search if another interface descriptor is found before the required endpoint.
  *
  *  \return A value from the DSEARCH_Return_ErrorCodes_t enum
  */
 uint8_t DComp_NextKeyboardInterfaceDataEndpoint(void* CurrentDescriptor)
 {
-       if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
-       {
-               if (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Endpoint_t).EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
-                 return DESCRIPTOR_SEARCH_Found;
-       }
-       else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
-       {
-               return DESCRIPTOR_SEARCH_Fail;
-       }
-
-       return DESCRIPTOR_SEARCH_NotFound;
+       USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+       if (Header->Type == DTYPE_Endpoint)
+         return DESCRIPTOR_SEARCH_Found;
+       else if (Header->Type == DTYPE_Interface)
+         return DESCRIPTOR_SEARCH_Fail;
+       else
+         return DESCRIPTOR_SEARCH_NotFound;
 }