X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/32e735b2b2eefb74e0415a5826692f7ba8c0a984..eeba38e343a299e12964aec15fd43108d3dc9130:/Demos/Host/CDCHost/ConfigDescriptor.c

diff --git a/Demos/Host/CDCHost/ConfigDescriptor.c b/Demos/Host/CDCHost/ConfigDescriptor.c
index 972d3e68c..faad3ccd2 100644
--- a/Demos/Host/CDCHost/ConfigDescriptor.c
+++ b/Demos/Host/CDCHost/ConfigDescriptor.c
@@ -70,7 +70,8 @@ uint8_t ProcessConfigurationDescriptor(void)
 	  return InvalidConfigDataReturned;
 	
 	/* Get the CDC control interface from the configuration descriptor */
-	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, NextCDCControlInterface))
+	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+	                              NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
 	{
 		/* Descriptor not found, error out */
 		return NoCDCInterfaceFound;
@@ -81,13 +82,14 @@ uint8_t ProcessConfigurationDescriptor(void)
 	{
 		/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
 		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
-		                                   NextInterfaceCDCDataEndpoint))
+		                              NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
 		{
 			/* Check to see if the control interface's notification pipe has been found, if so search for the data interface */
 			if (FoundEndpoints & (1 << CDC_NOTIFICATIONPIPE))
 			{
 				/* Get the next CDC data interface from the configuration descriptor (CDC class has two CDC interfaces) */
-				if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, NextCDCDataInterface))
+				if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, 
+				                              NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
 				{
 					/* Descriptor not found, error out */
 					return NoCDCInterfaceFound;
@@ -95,8 +97,20 @@ uint8_t ProcessConfigurationDescriptor(void)
 			}
 			else
 			{
+				/* Clear the found endpoints mask, since any already processed endpoints aren't in the CDC interface we need */
+				FoundEndpoints = 0;
+
+				/* Disable any already configured pipes from the invalid CDC interfaces */
+				Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);
+				Pipe_DisablePipe();
+				Pipe_SelectPipe(CDC_DATAPIPE_IN);
+				Pipe_DisablePipe();
+				Pipe_SelectPipe(CDC_DATAPIPE_OUT);
+				Pipe_DisablePipe();
+			
 				/* Get the next CDC control interface from the configuration descriptor (CDC class has two CDC interfaces) */
-				if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, NextCDCControlInterface))
+				if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+				                              NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
 				{
 					/* Descriptor not found, error out */
 					return NoCDCInterfaceFound;
@@ -105,7 +119,7 @@ uint8_t ProcessConfigurationDescriptor(void)
 
 			/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
 			if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
-											   NextInterfaceCDCDataEndpoint))
+			                              NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
 			{
 				/* Descriptor not found, error out */
 				return NoEndpointFound;
@@ -181,11 +195,11 @@ DESCRIPTOR_COMPARATOR(NextCDCControlInterface)
 		    (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_CONTROL_SUBCLASS) &&
 		    (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_CONTROL_PROTOCOL))
 		{
-			return Descriptor_Search_Found;
+			return DESCRIPTOR_SEARCH_Found;
 		}
 	}
 	
-	return Descriptor_Search_NotFound;
+	return DESCRIPTOR_SEARCH_NotFound;
 }
 
 /** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
@@ -205,11 +219,11 @@ DESCRIPTOR_COMPARATOR(NextCDCDataInterface)
 		    (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_DATA_SUBCLASS) &&
 		    (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_DATA_PROTOCOL))
 		{
-			return Descriptor_Search_Found;
+			return DESCRIPTOR_SEARCH_Found;
 		}
 	}
 	
-	return Descriptor_Search_NotFound;
+	return DESCRIPTOR_SEARCH_NotFound;
 }
 
 /** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
@@ -230,12 +244,12 @@ DESCRIPTOR_COMPARATOR(NextInterfaceCDCDataEndpoint)
 		                                        USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
 	
 		if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
-		  return Descriptor_Search_Found;
+		  return DESCRIPTOR_SEARCH_Found;
 	}
 	else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
 	{
-		return Descriptor_Search_Fail;
+		return DESCRIPTOR_SEARCH_Fail;
 	}
 
-	return Descriptor_Search_NotFound;
+	return DESCRIPTOR_SEARCH_NotFound;
 }