Remove incorrect Abstract Call Management class specific descriptor from the CDC...

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

diff --git a/LUFA/Drivers/USB/LowLevel/LowLevel.h b/LUFA/Drivers/USB/LowLevel/LowLevel.h
index dc01d24..efa605b 100644 (file)
--- a/LUFA/Drivers/USB/LowLevel/LowLevel.h
+++ b/LUFA/Drivers/USB/LowLevel/LowLevel.h
@@ -28,6 +28,16 @@
   this software.\r
 */\r
 \r
+/** \file\r
+ *  \brief USB low level USB controller definitions.\r
+ *\r
+ *  This file contains structures, function prototypes and macros related to the low level configutation of the\r
+ *  USB controller, to start, stop and reset the USB library core.\r
+ *\r
+ *  \note This file should not be included directly. It is automatically included as needed by the USB driver\r
+ *        dispatch header located in LUFA/Drivers/USB/USB.h.\r
+ */\r
+ \r
 /** \ingroup Group_USB\r
  *  @defgroup Group_USBManagement USB Interface Management\r
  *\r
@@ -50,7 +60,7 @@
                #include "../HighLevel/USBMode.h"\r
                #include "../HighLevel/Events.h"\r
                #include "../HighLevel/USBTask.h"\r
-               #include "../HighLevel/USBInterrupt.h"\r
+               #include "USBInterrupt.h"\r
                \r
                #if defined(USB_CAN_BE_HOST) || defined(__DOXYGEN__)\r
                        #include "Host.h"\r
@@ -70,6 +80,10 @@
                #endif\r
 \r
        /* Preprocessor Checks and Defines: */\r
+               #if !defined(__INCLUDE_FROM_USB_DRIVER)\r
+                       #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.\r
+               #endif\r
+\r
                #if !defined(F_CLOCK)\r
                        #error F_CLOCK is not defined. You must define F_CLOCK to the frequency of the unprescaled input clock in your project makefile.\r
                #endif\r
@@ -222,8 +236,12 @@
                         *  allow for device connection to a host when in device mode, or for device enumeration while in\r
                         *  host mode.\r
                         *\r
-                        *  As the USB library relies on USB interrupts for some of its functionality, this routine will\r
-                        *  enable global interrupts.\r
+                        *  As the USB library relies on interrupts for the device and host mode enumeration processes,\r
+                        *  the user must enable global interrupts before or shortly after this function is called. In\r
+                        *  device mode, interrupts must be enabled within 500ms of this function being called to ensure\r
+                        *  that the host does not time out whilst enumerating the device. In host mode, interrupts may be\r
+                        *  enabled at the application's leisure however enumeration will not begin of an attached device\r
+                        *  until after this has occurred.\r
                         *\r
                         *  Calling this function when the USB interface is already initialized will cause a complete USB\r
                         *  interface reset and re-enumeration.\r
@@ -238,16 +256,18 @@
                         *                      mode speed.\r
                         *\r
                         *  \note To reduce the FLASH requirements of the library if only device or host mode is required, \r
-                        *        this can be statically set via defining the token USB_DEVICE_ONLY for device mode or \r
-                        *        USB_HOST_ONLY for host mode in the use project makefile, passing the token to the compiler \r
+                        *        the mode can be statically set in the project makefile by defining the token USB_DEVICE_ONLY\r
+                        *        (for device mode) or USB_HOST_ONLY (for host mode), passing the token to the compiler \r
                         *        via the -D switch. If the mode is statically set, this parameter does not exist in the\r
                         *        function prototype.\r
+                        *        \n\n\r
                         *\r
                         *  \note To reduce the FLASH requirements of the library if only fixed settings are are required,\r
                         *        the options may be set statically in the same manner as the mode (see the Mode parameter of \r
                         *        this function). To statically set the USB options, pass in the USE_STATIC_OPTIONS token,\r
                         *        defined to the appropriate options masks. When the options are statically set, this\r
                         *        parameter does not exist in the function prototype.\r
+                        *        \n\n\r
                         *        \r
                         *  \note The mode parameter does not exist on devices where only one mode is possible, such as USB \r
                         *        AVR models which only implement the USB device mode in hardware.\r