X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/4d246a82cbed77cea849ddcbc88d32019665edae..b8db5fc1e7a49c0b91a67570e11edf90f985cd00:/LUFA/Drivers/USB/HighLevel/StdDescriptors.h

diff --git a/LUFA/Drivers/USB/HighLevel/StdDescriptors.h b/LUFA/Drivers/USB/HighLevel/StdDescriptors.h
index 404a44f2c..4090aaa3d 100644
--- a/LUFA/Drivers/USB/HighLevel/StdDescriptors.h
+++ b/LUFA/Drivers/USB/HighLevel/StdDescriptors.h
@@ -58,6 +58,11 @@
 			extern "C" {
 		#endif
 
+	/* Preprocessor Checks: */
+		#if !defined(__INCLUDE_FROM_USB_DRIVER)
+			#error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
+		#endif
+		
 	/* Public Interface - May be used in end-application: */
 		/* Macros: */
 			/** Indicates that a given descriptor does not exist in the device. This can be used inside descriptors
@@ -81,7 +86,7 @@
 				#define USE_INTERNAL_SERIAL           NO_DESCRIPTOR
 			#endif
 			
-			/** Macro to calculate the power value for the device descriptor, from a given number of milliamps. */
+			/** Macro to calculate the power value for the configuration descriptor, from a given number of milliamps. */
 			#define USB_CONFIG_POWER_MA(mA)           ((mA) >> 1)
 
 			/** Macro to calculate the Unicode length of a string with a given number of Unicode characters.
@@ -119,7 +124,6 @@
 			 */
 			#define USB_CONFIG_ATTR_BUSPOWERED        0x80
 
-			
 			/** Can be masked with other configuration descriptor attributes for a \ref USB_Descriptor_Configuration_Header_t
 			 *  descriptor's ConfigAttributes value to indicate that the specified configuration can draw its power
 			 *  from the device's own power source.