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

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

diff --git a/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c b/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
index ebb4002..e11fc17 100644 (file)
--- a/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
+++ b/Demos/Host/LowLevel/StillImageHost/ConfigDescriptor.c
@@ -3,7 +3,7 @@
      Copyright (C) Dean Camera, 2010.
 
   dean [at] fourwalledcubicle [dot] com
-      www.fourwalledcubicle.com
+           www.lufa-lib.org
 */
 
 /*
@@ -141,12 +141,16 @@ uint8_t ProcessConfigurationDescriptor(void)
  */
 uint8_t DComp_NextStillImageInterface(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 descriptor class, subclass and protocol, break out if correct interface found */
-               if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class    == SI_CSCP_StillImageClass)    &&
-                   (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == SI_CSCP_StillImageSubclass) &&
-                   (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == SI_CSCP_BulkOnlyProtocol))
+               if ((Interface->Class    == SI_CSCP_StillImageClass)    &&
+                   (Interface->SubClass == SI_CSCP_StillImageSubclass) &&
+                   (Interface->Protocol == SI_CSCP_BulkOnlyProtocol))
                {
                        return DESCRIPTOR_SEARCH_Found;
                }
@@ -166,15 +170,20 @@ uint8_t DComp_NextStillImageInterface(void* CurrentDescriptor)
  */
 uint8_t DComp_NextStillImageInterfaceDataEndpoint(void* CurrentDescriptor)
 {
-       if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
+       USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+       if (Header->Type == DTYPE_Endpoint)
        {
-               uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
-                                                       USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
+               USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
 
-               if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
-                 return DESCRIPTOR_SEARCH_Found;
+               /* Check the endpoint type, break out if correct BULK or INTERRUPT type endpoint found */
+               if (((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_BULK) || 
+                   ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT))
+               {
+                       return DESCRIPTOR_SEARCH_Found;
+               }
        }
-       else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+       else if (Header->Type == DTYPE_Interface)
        {
                return DESCRIPTOR_SEARCH_Fail;
        }