Add more const-ness to the stream endpoint/pipe functions where possible.

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

diff --git a/LUFA/Drivers/USB/USB.h b/LUFA/Drivers/USB/USB.h
index 731704e..ff72a08 100644 (file)
--- a/LUFA/Drivers/USB/USB.h
+++ b/LUFA/Drivers/USB/USB.h
@@ -1,13 +1,13 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2011.

 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted


@@ -54,6 +54,7 @@
  *    - LUFA/Drivers/USB/HighLevel/HostStandardReq.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
  *    - LUFA/Drivers/USB/HighLevel/PipeStream.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
  *    - LUFA/Drivers/USB/HighLevel/USBTask.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
  *    - LUFA/Drivers/USB/HighLevel/HostStandardReq.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
  *    - LUFA/Drivers/USB/HighLevel/PipeStream.c <i>(Makefile source module name: LUFA_SRC_USB)</i>
  *    - LUFA/Drivers/USB/HighLevel/USBTask.c <i>(Makefile source module name: LUFA_SRC_USB)</i>

+ *    - LUFA/Drivers/USB/Class/Common/HIDParser.c <i>(Makefile source module name: LUFA_SRC_USB)</i>

  *
  *  \section Sec_ModDescription Module Description
  *  Driver and framework for the USB controller hardware on the USB series of AVR microcontrollers. This module
  *
  *  \section Sec_ModDescription Module Description
  *  Driver and framework for the USB controller hardware on the USB series of AVR microcontrollers. This module


@@ -142,17 +143,17 @@
  *  \subsection Sec_ClassDriverDevice Device Mode Class Drivers
  *  Implementing a Device Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
  *  the module configuration and state structure must be added to the project source. These structures are named in a
  *  \subsection Sec_ClassDriverDevice Device Mode Class Drivers
  *  Implementing a Device Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
  *  the module configuration and state structure must be added to the project source. These structures are named in a

- *  similar manner between classes, that of <i>USB_ClassInfo_<b>{Class Name}</b>_Device_t</i>, and are used to hold the
+ *  similar manner between classes, that of <tt>USB_ClassInfo_<i>{Class Name}</i>_Device_t</tt>, and are used to hold the

  *  complete state and configuration for each class instance. Multiple class instances is where the power of the class
  *  complete state and configuration for each class instance. Multiple class instances is where the power of the class

- *  drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's ClassInfo
+ *  drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's \c USB_ClassInfo_*

  *  structure.
  *
  *  structure.
  *

- *  Inside the ClassInfo structure lies two sections, a <i>Config</i> section, and a <i>State</i> section. The Config
+ *  Inside the ClassInfo structure lies two sections, a \c Config section, and a \c State section. The \c Config

  *  section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
  *  before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
  *  for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
  *
  *  section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
  *  before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
  *  for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
  *

- *  The <i>State</i> section of the ClassInfo structures are designed to be controlled by the Class Drivers only for
+ *  The \c State section of the \c USB_ClassInfo_* structures are designed to be controlled by the Class Drivers only for

  *  maintaining the Class Driver instance's state, and should not normally be set by the user application.
  *
  *  The following is an example of a properly initialized instance of the Audio Class Driver structure:
  *  maintaining the Class Driver instance's state, and should not normally be set by the user application.
  *
  *  The following is an example of a properly initialized instance of the Audio Class Driver structure:


@@ -173,11 +174,11 @@
  *  \note The class driver's configuration parameters should match those used in the device's descriptors that are
  *  sent to the host.
  *
  *  \note The class driver's configuration parameters should match those used in the device's descriptors that are
  *  sent to the host.
  *

- *  To initialize the Class driver instance, the driver's <i><b>{Class Name}</b>_Device_ConfigureEndpoints()</i> function
+ *  To initialize the Class driver instance, the driver's <tt><i>{Class Name}</i>_Device_ConfigureEndpoints()</tt> function

  *  should be called in response to the \ref EVENT_USB_Device_ConfigurationChanged() event. This function will return a
  *  boolean value if the driver successfully initialized the instance. Like all the class driver functions, this function
  *  takes in the address of the specific instance you wish to initialize - in this manner, multiple separate instances of
  *  should be called in response to the \ref EVENT_USB_Device_ConfigurationChanged() event. This function will return a
  *  boolean value if the driver successfully initialized the instance. Like all the class driver functions, this function
  *  takes in the address of the specific instance you wish to initialize - in this manner, multiple separate instances of

- *  the same class type can be initialized like thus:
+ *  the same class type can be initialized like this:

  *
  *  \code
  *  void EVENT_USB_Device_ConfigurationChanged(void)
  *
  *  \code
  *  void EVENT_USB_Device_ConfigurationChanged(void)


@@ -190,7 +191,7 @@
  *  \endcode
  *
  *  Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's
  *  \endcode
  *
  *  Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's

- *  <i><b>{Class Name}</b>_Device_USBTask()</i> function in the main program loop. The exact implementation of this
+ *  <tt><i>{Class Name}</i>_Device_USBTask()</tt> function in the main program loop. The exact implementation of this

  *  function varies between class drivers, and can be used for any internal class driver purpose to maintain each
  *  instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
  *  separate instance, just like the main USB maintenance routine \ref USB_USBTask():
  *  function varies between class drivers, and can be used for any internal class driver purpose to maintain each
  *  instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
  *  separate instance, just like the main USB maintenance routine \ref USB_USBTask():


@@ -213,7 +214,7 @@
  *  \endcode
  *
  *  The final standardized Device Class Driver function is the Control Request handler function
  *  \endcode
  *
  *  The final standardized Device Class Driver function is the Control Request handler function

- *  <i><b>{Class Name}</b>_Device_ProcessControlRequest()</i>, which should be called when the
+ *  <tt><i>{Class Name}</i>_Device_ProcessControlRequest()</tt>, which should be called when the

  *  \ref EVENT_USB_Device_ControlRequest() event fires. This function should also be called for
  *  each class driver instance, using the address of the instance to operate on as the function's
  *  parameter. The request handler will abort if it is determined that the current request is not
  *  \ref EVENT_USB_Device_ControlRequest() event fires. This function should also be called for
  *  each class driver instance, using the address of the instance to operate on as the function's
  *  parameter. The request handler will abort if it is determined that the current request is not


@@ -227,10 +228,10 @@
  *  }
  *  \endcode
  *
  *  }
  *  \endcode
  *

- *  Each class driver may also define a set of callback functions (which are prefixed by "CALLBACK_"
+ *  Each class driver may also define a set of callback functions (which are prefixed by \c CALLBACK_*

  *  in the function's name) which <b>must</b> also be added to the user application - refer to each
  *  individual class driver's documentation for mandatory callbacks. In addition, each class driver may
  *  in the function's name) which <b>must</b> also be added to the user application - refer to each
  *  individual class driver's documentation for mandatory callbacks. In addition, each class driver may

- *  also define a set of events (identifiable by their prefix of "EVENT_" in the function's name), which
+ *  also define a set of events (identifiable by their prefix of \c EVENT_* in the function's name), which

  *  the user application <b>may</b> choose to implement, or ignore if not needed.
  *
  *  The individual Device Mode Class Driver documentation contains more information on the non-standardized,
  *  the user application <b>may</b> choose to implement, or ignore if not needed.
  *
  *  The individual Device Mode Class Driver documentation contains more information on the non-standardized,


@@ -241,17 +242,17 @@
  *  \subsection Sec_ClassDriverHost Host Mode Class Drivers
  *  Implementing a Host Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
  *  the module configuration and state structure must be added to the project source. These structures are named in a
  *  \subsection Sec_ClassDriverHost Host Mode Class Drivers
  *  Implementing a Host Mode Class Driver in a user application requires a number of steps to be followed. Firstly,
  *  the module configuration and state structure must be added to the project source. These structures are named in a

- *  similar manner between classes, that of <i>USB_ClassInfo_<b>{Class Name}</b>_Host_t</i>, and are used to hold the
+ *  similar manner between classes, that of <tt>USB_ClassInfo_<b>{Class Name}</b>_Host_t</tt>, and are used to hold the

  *  complete state and configuration for each class instance. Multiple class instances is where the power of the class
  *  complete state and configuration for each class instance. Multiple class instances is where the power of the class

- *  drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's ClassInfo
+ *  drivers lie; multiple interfaces of the same class simply require more instances of the Class Driver's \c USB_ClassInfo_*

  *  structure.
  *
  *  structure.
  *

- *  Inside the ClassInfo structure lies two sections, a <i>Config</i> section, and a <i>State</i> section. The Config
+ *  Inside the \c USB_ClassInfo_* structure lies two sections, a \c Config section, and a \c State section. The \c Config

  *  section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
  *  before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
  *  for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
  *
  *  section contains the instance's configuration parameters, and <b>must have all fields set by the user application</b>
  *  before the class driver is used. Each Device mode Class driver typically contains a set of configuration parameters
  *  for the endpoint size/number of the associated logical USB interface, plus any class-specific configuration parameters.
  *

- *  The <i>State</i> section of the ClassInfo structures are designed to be controlled by the Class Drivers only for
+ *  The \c State section of the \c USB_ClassInfo_* structures are designed to be controlled by the Class Drivers only for

  *  maintaining the Class Driver instance's state, and should not normally be set by the user application.
  *
  *  The following is an example of a properly initialized instance of the MIDI Class Driver structure:
  *  maintaining the Class Driver instance's state, and should not normally be set by the user application.
  *
  *  The following is an example of a properly initialized instance of the MIDI Class Driver structure:


@@ -270,9 +271,9 @@
  *  };
  *  \endcode
  *
  *  };
  *  \endcode
  *

- *  To initialize the Class driver instance, the driver's <i><b>{Class Name}</b>_Host_ConfigurePipes()</i> function
+ *  To initialize the Class driver instance, the driver's <tt><b>{Class Name}</b>_Host_ConfigurePipes()</tt> function

  *  should be called in response to the host state machine entering the \ref HOST_STATE_Addressed state. This function
  *  should be called in response to the host state machine entering the \ref HOST_STATE_Addressed state. This function

- *  will return an error code from the class driver's <i><b>{Class Name}</b>_EnumerationFailure_ErrorCodes_t</i> enum
+ *  will return an error code from the class driver's <tt><b>{Class Name}</b>_EnumerationFailure_ErrorCodes_t</tt> enum

  *  to indicate if the driver successfully initialized the instance and bound it to an interface in the attached device.
  *  Like all the class driver functions, this function takes in the address of the specific instance you wish to initialize -
  *  in this manner, multiple separate instances of the same class type can be initialized. A fragment of a Class Driver
  *  to indicate if the driver successfully initialized the instance and bound it to an interface in the attached device.
  *  Like all the class driver functions, this function takes in the address of the specific instance you wish to initialize -
  *  in this manner, multiple separate instances of the same class type can be initialized. A fragment of a Class Driver


@@ -314,7 +315,7 @@
  *  the configuration will fail.
  *
  *  Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's
  *  the configuration will fail.
  *
  *  Once initialized, it is important to maintain the class driver's state by repeatedly calling the Class Driver's

- *  <i><b>{Class Name}</b>_Host_USBTask()</i> function in the main program loop. The exact implementation of this
+ *  <tt><b>{Class Name}</b>_Host_USBTask()</tt> function in the main program loop. The exact implementation of this

  *  function varies between class drivers, and can be used for any internal class driver purpose to maintain each
  *  instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
  *  separate instance, just like the main USB maintenance routine \ref USB_USBTask():
  *  function varies between class drivers, and can be used for any internal class driver purpose to maintain each
  *  instance. Again, this function uses the address of the instance to operate on, and thus needs to be called for each
  *  separate instance, just like the main USB maintenance routine \ref USB_USBTask():


@@ -339,10 +340,10 @@
  *  }
  *  \endcode
  *
  *  }
  *  \endcode
  *

- *  Each class driver may also define a set of callback functions (which are prefixed by "CALLBACK_"
+ *  Each class driver may also define a set of callback functions (which are prefixed by \c CALLBACK_*

  *  in the function's name) which <b>must</b> also be added to the user application - refer to each
  *  individual class driver's documentation for mandatory callbacks. In addition, each class driver may
  *  in the function's name) which <b>must</b> also be added to the user application - refer to each
  *  individual class driver's documentation for mandatory callbacks. In addition, each class driver may

- *  also define a set of events (identifiable by their prefix of "EVENT_" in the function's name), which
+ *  also define a set of events (identifiable by their prefix of \c EVENT_* in the function's name), which

  *  the user application <b>may</b> choose to implement, or ignore if not needed.
  *
  *  The individual Host Mode Class Driver documentation contains more information on the non-standardized,
  *  the user application <b>may</b> choose to implement, or ignore if not needed.
  *
  *  The individual Host Mode Class Driver documentation contains more information on the non-standardized,