Speed up bit-banged USART code in the AVRISP project.

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

diff --git a/LUFA/Drivers/USB/Class/CDC.h b/LUFA/Drivers/USB/Class/CDC.h
index 9cd3bcd..2014a22 100644 (file)
--- a/LUFA/Drivers/USB/Class/CDC.h
+++ b/LUFA/Drivers/USB/Class/CDC.h
@@ -29,7 +29,7 @@
 */\r
 \r
 /** \ingroup Group_USBClassDrivers\r
- *  @defgroup Group_USBClassCDC CDC Device Class Driver - LUFA/Drivers/Class/CDC.h\r
+ *  @defgroup Group_USBClassCDC CDC Class Driver - LUFA/Drivers/Class/CDC.h\r
  *\r
  *  \section Sec_Dependencies Module Source Dependencies\r
  *  The following files must be built with any user project that uses this module:\r
@@ -37,8 +37,12 @@
  *    - LUFA/Drivers/USB/Class/Host/CDC.c\r
  *\r
  *  \section Module Description\r
- *  Functions, macros, variables, enums and types related to the management of USB CDC Class interfaces\r
- *  within a USB device, for the implementation of CDC-ACM virtual serial ports.\r
+ *  CDC Class Driver module. This module contains an internal implementation of the USB CDC-ACM class Virtual Serial\r
+ *  Ports, for both Device and Host USB modes. User applications can use this class driver instead of implementing the\r
+ *  CDC class manually via the low-level LUFA APIs.\r
+ *\r
+ *  This module is designed to simplify the user code by exposing only the required interface needed to interface with\r
+ *  Hosts or Devices using the USB CDC Class.\r
  *\r
  *  @{\r
  */\r
@@ -49,6 +53,10 @@
        /* Includes: */\r
                #include "../HighLevel/USBMode.h"\r
 \r
+               #if defined(NO_STREAM_CALLBACKS)\r
+                       #error The NO_STREAM_CALLBACKS compile time option cannot be used in projects using the library Class drivers.\r
+               #endif\r
+\r
                #if defined(USB_CAN_BE_DEVICE)\r
                        #include "Device/CDC.h"\r
                #endif\r