Pipe_GetErrorFlags() now returns additional error flags for overflow and underflow...

[pub/USBasp.git] / LUFA / Drivers / USB / USB.h

diff --git a/LUFA/Drivers/USB/USB.h b/LUFA/Drivers/USB/USB.h
index 3c8f062..9abd275 100644 (file)
--- a/LUFA/Drivers/USB/USB.h
+++ b/LUFA/Drivers/USB/USB.h
@@ -54,14 +54,23 @@
  *  Functions, macros, variables, enums and types related to the management of USB communications.\r
  */\r
 \r
+/** \ingroup Group_USB\r
+ *  @defgroup Group_USBClassDrivers USB Class Drivers\r
+ *\r
+ *  Drivers for both host and device mode of the standard USB classes, for rapid application development.\r
+ *  Class drivers give a framework which sits on top of the low level library API, allowing for standard\r
+ *  USB classes to be implemented in a project with minimal user code. These drivers can be used in\r
+ *  conjunction with the library low level APIs to implement interfaces both via the class drivers and via\r
+ *  the standard library APIs.\r
+ *\r
+ *  Multiple device mode class drivers can be used within a project, including multiple instances of the\r
+ *  same class driver.\r
+ */\r
+ \r
 #ifndef __USB_H__\r
 #define __USB_H__\r
 \r
-       /* Preprocessor Checks: */\r
-               #if (!(defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__)) && defined(USB_HOST_ONLY))\r
-                       #error USB_HOST_ONLY is not available for the currently selected USB AVR model.\r
-               #endif\r
-               \r
+       /* Preprocessor Checks: */              \r
                #if (!(defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB647__) ||  \\r
                       defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) ||  \\r
                           defined(__AVR_AT90USB162__)  || defined(__AVR_AT90USB82__)  ||  \\r