From 113df4878b305759df30f4f0d434830fba3fc57f Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Tue, 1 Sep 2009 13:57:47 +0000
Subject: Fix up MissileLauncher demo's ConfigurationDescriptor.c so that it
 uses the new USB_GetDeviceConfigDescriptor() function parameters.

---
 Projects/MissileLauncher/ConfigDescriptor.c | 37 +++++++++++++----------------
 1 file changed, 16 insertions(+), 21 deletions(-)

(limited to 'Projects')

diff --git a/Projects/MissileLauncher/ConfigDescriptor.c b/Projects/MissileLauncher/ConfigDescriptor.c
index 405daa4fe..0a50beb57 100644
--- a/Projects/MissileLauncher/ConfigDescriptor.c
+++ b/Projects/MissileLauncher/ConfigDescriptor.c
@@ -47,31 +47,26 @@
  */
 uint8_t ProcessConfigurationDescriptor(void)
 {
-	uint8_t* ConfigDescriptorData;
-	uint16_t ConfigDescriptorSize;
-	
+	uint8_t  ConfigDescriptorData[512];
+	uint8_t* CurrConfigLocation = ConfigDescriptorData;
+	uint16_t CurrConfigBytesRem;
 	uint8_t  FoundEndpoints = 0;
-	
-	/* Get Configuration Descriptor size from the device */
-	if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
-	  return ControlError;
-	
-	/* Ensure that the Configuration Descriptor isn't too large */
-	if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)
-	  return DescriptorTooLarge;
-	  
-	/* Allocate enough memory for the entire config descriptor */
-	ConfigDescriptorData = alloca(ConfigDescriptorSize);
 
 	/* Retrieve the entire configuration descriptor into the allocated buffer */
-	USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);
-	
-	/* Validate returned data - ensure first entry is a configuration header descriptor */
-	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
-	  return InvalidConfigDataReturned;
+	switch (USB_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
+	{
+		case HOST_GETCONFIG_Successful:
+			break;
+		case HOST_GETCONFIG_InvalidData:
+			return InvalidConfigDataReturned;
+		case HOST_GETCONFIG_BuffOverflow:
+			return DescriptorTooLarge;
+		default:
+			return ControlError;
+	}
 	
 	/* Get the HID interface from the configuration descriptor */
-	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+	if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
 	                              DComp_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found)
 	{
 		/* Descriptor not found, error out */
@@ -81,7 +76,7 @@ uint8_t ProcessConfigurationDescriptor(void)
 	while (FoundEndpoints != ((1 << HID_DATA_IN_PIPE) | (1 << HID_DATA_OUT_PIPE)))
 	{
 		/* Get the next HID interface's data endpoint descriptor */
-		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+		if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
 		                              DComp_NextInterfaceHIDDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
 		{
 			/* Not all HID devices have an OUT endpoint - if we've reached the end of the HID descriptor
-- 
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