Split out endpoint and pipe stream functions into new EndpointStream.c/.h and PipeStr...
[pub/USBasp.git] / LUFA / Drivers / USB / LowLevel / Endpoint.h
index 48e6605..0b0a472 100644 (file)
  *        dispatch header located in LUFA/Drivers/USB/USB.h.
  */
 
-/** \ingroup Group_USB
- *  @defgroup Group_EndpointManagement Endpoint Management
- *
- *  Functions, macros and enums related to endpoint management when in USB Device mode. This
- *  module contains the endpoint management macros, as well as endpoint interrupt and data
- *  send/receive functions for various data types.
- *
- *  @{
- */
-
-/** @defgroup Group_EndpointRW Endpoint Data Reading and Writing
+/** \ingroup Group_EndpointManagement
+ *  @defgroup Group_EndpointRW Endpoint Data Reading and Writing
  *
  *  Functions, macros, variables, enums and types related to data reading and writing from and to endpoints.
  */
  
-/** \ingroup Group_EndpointRW  
+/** \ingroup Group_EndpointRW
  *  @defgroup Group_EndpointPrimitiveRW Read/Write of Primitive Data Types
  *
  *  Functions, macros, variables, enums and types related to data reading and writing of primitive data types
  *  from and to endpoints.
  */ 
 
-/** \ingroup Group_EndpointRW  
- *  @defgroup Group_EndpointStreamRW Read/Write of Multi-Byte Streams
+/** \ingroup Group_EndpointManagement
+ *  @defgroup Group_EndpointPacketManagement Endpoint Packet Management
  *
- *  Functions, macros, variables, enums and types related to data reading and writing of data streams from
- *  and to endpoints.
- */ 
+ *  Functions, macros, variables, enums and types related to packet management of endpoints.
+ */
 
-/** @defgroup Group_EndpointPacketManagement Endpoint Packet Management
+/** \ingroup Group_USB
+ *  @defgroup Group_EndpointManagement Endpoint Management
  *
- *  Functions, macros, variables, enums and types related to packet management of endpoints.
+ *  Functions, macros and enums related to endpoint management when in USB Device mode. This
+ *  module contains the endpoint management macros, as well as endpoint interrupt and data
+ *  send/receive functions for various data types.
+ *
+ *  @{
  */
 
 #ifndef __ENDPOINT_H__
 
        /* Includes: */
                #include <avr/io.h>
-               #include <avr/pgmspace.h>
-               #include <avr/eeprom.h>
                #include <stdbool.h>
 
                #include "../../../Common/Common.h"
                #include "../HighLevel/USBTask.h"
                #include "USBInterrupt.h"
-
-               #if !defined(NO_STREAM_CALLBACKS) || defined(__DOXYGEN__)
-                       #include "../HighLevel/StreamCallbacks.h"
-               #endif
                
        /* Enable C linkage for C++ Compilers: */
                #if defined(__cplusplus)
                        #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
                #endif
 
-               #if !defined(NO_STREAM_CALLBACKS) || defined(__DOXYGEN__)
-                       #define __CALLBACK_PARAM     , StreamCallbackPtr_t Callback
-               #else
-                       #define __CALLBACK_PARAM
-               #endif
-
        /* Private Interface - For use in library only: */
        #if !defined(__DOXYGEN__)
                /* Macros: */
                                                                                 *   \ref USB_STREAM_TIMEOUT_MS macro.
                                                                                 */
                        };
-               
-                       /** Enum for the possible error return codes of the Endpoint_*_Stream_* functions.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        */
-                       enum Endpoint_Stream_RW_ErrorCodes_t
-                       {
-                               ENDPOINT_RWSTREAM_NoError            = 0, /**< Command completed successfully, no error. */
-                               ENDPOINT_RWSTREAM_EndpointStalled    = 1, /**< The endpoint was stalled during the stream
-                                                                          *   transfer by the host or device.
-                                                                          */
-                               ENDPOINT_RWSTREAM_DeviceDisconnected = 2, /**< Device was disconnected from the host during
-                                                                          *   the transfer.
-                                                                          */
-                               ENDPOINT_RWSTREAM_BusSuspended       = 3, /**< The USB bus has been suspended by the host and
-                                                                          *   no USB endpoint traffic can occur until the bus
-                                                                          *   has resumed.
-                                                                          */
-                               ENDPOINT_RWSTREAM_Timeout            = 4, /**< The host failed to accept or send the next packet
-                                                                          *   within the software timeout period set by the
-                                                                          *   \ref USB_STREAM_TIMEOUT_MS macro.
-                                                                          */
-                               ENDPOINT_RWSTREAM_CallbackAborted    = 5, /**< Indicates that the stream's callback function
-                                                                      *   aborted the transfer early.
-                                                                          */
-                       };
-                       
-                       /** Enum for the possible error return codes of the Endpoint_*_Control_Stream_* functions..
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        */
-                       enum Endpoint_ControlStream_RW_ErrorCodes_t
-                       {
-                               ENDPOINT_RWCSTREAM_NoError            = 0, /**< Command completed successfully, no error. */
-                               ENDPOINT_RWCSTREAM_HostAborted        = 1, /**< The aborted the transfer prematurely. */
-                               ENDPOINT_RWCSTREAM_DeviceDisconnected = 2, /**< Device was disconnected from the host during
-                                                                           *   the transfer.
-                                                                           */
-                               ENDPOINT_RWCSTREAM_BusSuspended       = 3, /**< The USB bus has been suspended by the host and
-                                                                           *   no USB endpoint traffic can occur until the bus
-                                                                           *   has resumed.
-                                                                           */
-                       };
 
                /* Inline Functions: */                 
                        /** Configures the specified endpoint number with the given endpoint type, direction, bank size
                        #endif
 
                /* Function Prototypes: */
-                       /** Spin-loops until the currently selected non-control endpoint is ready for the next packet of data
-                        *  to be read or written to it.
-                        *
-                        *  \note This routine should not be called on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointRW
-                        *
-                        *  \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_WaitUntilReady(void);
-                       
                        /** Completes the status stage of a control transfer on a CONTROL type endpoint automatically,
                         *  with respect to the data direction. This is a convenience function which can be used to
                         *  simplify user control request handling.
                         */
                        void Endpoint_ClearStatusStage(void);
 
-                       /** Reads and discards the given number of bytes from the endpoint from the given buffer,
-                        *  discarding fully read packets from the host as needed. The last packet is not automatically
-                        *  discarded once the remaining bytes has been read; the user is responsible for manually
-                        *  discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. Between
-                        *  each USB packet, the given stream callback function is executed repeatedly until the next
-                        *  packet is ready, allowing for early aborts of stream transfers.
-                        *
-                        *      The callback routine should be created according to the information in \ref Group_StreamCallbacks.
-                        *  If the token NO_STREAM_CALLBACKS is passed via the -D option to the compiler, stream callbacks are
-                        *  disabled and this function has the Callback parameter omitted.
-                        *
-                        *  \note This routine should not be used on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Length    Number of bytes to send via the currently selected endpoint.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Discard_Stream(uint16_t Length
-                                                       __CALLBACK_PARAM);
-
-                       /** Writes the given number of bytes to the endpoint from the given buffer in little endian,
-                        *  sending full packets to the host as needed. The last packet filled is not automatically sent;
-                        *  the user is responsible for manually sending the last written packet to the host via the
-                        *  \ref Endpoint_ClearIN() macro. Between each USB packet, the given stream callback function
-                        *  is executed repeatedly until the endpoint is ready to accept the next packet, allowing for early
-                        *  aborts of stream transfers.
-                        *
-                        *      The callback routine should be created according to the information in \ref Group_StreamCallbacks.
-                        *  If the token NO_STREAM_CALLBACKS is passed via the -D option to the compiler, stream callbacks are
-                        *  disabled and this function has the Callback parameter omitted.
-                        *
-                        *  \note This routine should not be used on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Stream_LE(const void* Buffer,
-                                                        uint16_t Length
-                                                        __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Write_Stream_LE().
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_EStream_LE(const void* Buffer,
-                                                         uint16_t Length
-                                                         __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** FLASH buffer source version of \ref Endpoint_Write_Stream_LE().
-                        *
-                        *  \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_PStream_LE(const void* Buffer,
-                                                         uint16_t Length
-                                                         __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Writes the given number of bytes to the endpoint from the given buffer in big endian,
-                        *  sending full packets to the host as needed. The last packet filled is not automatically sent;
-                        *  the user is responsible for manually sending the last written packet to the host via the
-                        *  \ref Endpoint_ClearIN() macro. Between each USB packet, the given stream callback function
-                        *  is executed repeatedly until the endpoint is ready to accept the next packet, allowing for early
-                        *  aborts of stream transfers.
-                        *
-                        *      The callback routine should be created according to the information in \ref Group_StreamCallbacks.
-                        *  If the token NO_STREAM_CALLBACKS is passed via the -D option to the compiler, stream callbacks are
-                        *  disabled and this function has the Callback parameter omitted.
-                        *
-                        *  \note This routine should not be used on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Stream_BE(const void* Buffer,
-                                                        uint16_t Length
-                                                        __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Write_Stream_BE().
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_EStream_BE(const void* Buffer,
-                                                         uint16_t Length
-                                                         __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** FLASH buffer source version of \ref Endpoint_Write_Stream_BE().
-                        *
-                        *  \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer    Pointer to the source data buffer to read from.
-                        *  \param[in] Length    Number of bytes to read for the currently selected endpoint into the buffer.
-                        *  \param[in] Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_PStream_BE(const void* Buffer,
-                                                         uint16_t Length
-                                                         __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Reads the given number of bytes from the endpoint from the given buffer in little endian,
-                        *  discarding fully read packets from the host as needed. The last packet is not automatically
-                        *  discarded once the remaining bytes has been read; the user is responsible for manually
-                        *  discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. Between
-                        *  each USB packet, the given stream callback function is executed repeatedly until the endpoint
-                        *  is ready to accept the next packet, allowing for early aborts of stream transfers.
-                        *
-                        *      The callback routine should be created according to the information in \ref Group_StreamCallbacks.
-                        *  If the token NO_STREAM_CALLBACKS is passed via the -D option to the compiler, stream callbacks are
-                        *  disabled and this function has the Callback parameter omitted.
-                        *
-                        *  \note This routine should not be used on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer    Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length    Number of bytes to send via the currently selected endpoint.
-                        *  \param[in]  Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_Stream_LE(void* Buffer,
-                                                       uint16_t Length
-                                                       __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Read_Stream_LE().
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer    Pointer to the destination data buffer to write to, located in EEPROM memory space.
-                        *  \param[in]  Length    Number of bytes to send via the currently selected endpoint.
-                        *  \param[in]  Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_EStream_LE(void* Buffer,
-                                                        uint16_t Length
-                                                        __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-                       
-                       /** Reads the given number of bytes from the endpoint from the given buffer in big endian,
-                        *  discarding fully read packets from the host as needed. The last packet is not automatically
-                        *  discarded once the remaining bytes has been read; the user is responsible for manually
-                        *  discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. Between
-                        *  each USB packet, the given stream callback function is executed repeatedly until the endpoint
-                        *  is ready to accept the next packet, allowing for early aborts of stream transfers.
-                        *
-                        *      The callback routine should be created according to the information in \ref Group_StreamCallbacks.
-                        *  If the token NO_STREAM_CALLBACKS is passed via the -D option to the compiler, stream callbacks are
-                        *  disabled and this function has the Callback parameter omitted.
-                        *
-                        *  \note This routine should not be used on CONTROL type endpoints.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer    Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length    Number of bytes to send via the currently selected endpoint.
-                        *  \param[in]  Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_Stream_BE(void* Buffer,
-                                                       uint16_t Length
-                                                       __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Read_Stream_BE().
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer    Pointer to the destination data buffer to write to, located in EEPROM memory space.
-                        *  \param[in]  Length    Number of bytes to send via the currently selected endpoint.
-                        *  \param[in]  Callback  Name of a callback routine to call between successive USB packet transfers, NULL if no callback.
-                        *
-                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_EStream_BE(void* Buffer,
-                                                        uint16_t Length
-                                                        __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Writes the given number of bytes to the CONTROL type endpoint from the given buffer in little endian,
-                        *  sending full packets to the host as needed. The host OUT acknowledgement is not automatically cleared
-                        *  in both failure and success states; the user is responsible for manually clearing the setup OUT to
-                        *  finalize the transfer via the \ref Endpoint_ClearOUT() macro.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer,
-                                                                uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of Endpoint_Write_Control_Stream_LE.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_EStream_LE(const void* Buffer,
-                                                                 uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** FLASH buffer source version of \ref Endpoint_Write_Control_Stream_LE().
-                        *
-                        *  \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_PStream_LE(const void* Buffer,
-                                                                 uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Writes the given number of bytes to the CONTROL type endpoint from the given buffer in big endian,
-                        *  sending full packets to the host as needed. The host OUT acknowledgement is not automatically cleared
-                        *  in both failure and success states; the user is responsible for manually clearing the setup OUT to
-                        *  finalize the transfer via the \ref Endpoint_ClearOUT() macro.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_Stream_BE(const void* Buffer,
-                                                                uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Write_Control_Stream_BE().
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_EStream_BE(const void* Buffer,
-                                                                 uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** FLASH buffer source version of \ref Endpoint_Write_Control_Stream_BE().
-                        *
-                        *  \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[in] Buffer  Pointer to the source data buffer to read from.
-                        *  \param[in] Length  Number of bytes to read for the currently selected endpoint into the buffer.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Write_Control_PStream_BE(const void* Buffer,
-                                                                 uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Reads the given number of bytes from the CONTROL endpoint from the given buffer in little endian,
-                        *  discarding fully read packets from the host as needed. The device IN acknowledgement is not
-                        *  automatically sent after success or failure states; the user is responsible for manually sending the
-                        *  setup IN to finalize the transfer via the \ref Endpoint_ClearIN() macro.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer  Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length  Number of bytes to send via the currently selected endpoint.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_Control_Stream_LE(void* Buffer,
-                                                               uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** EEPROM buffer source version of \ref Endpoint_Read_Control_Stream_LE().
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer  Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length  Number of bytes to send via the currently selected endpoint.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_Control_EStream_LE(void* Buffer,
-                                                                uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-
-                       /** Reads the given number of bytes from the CONTROL endpoint from the given buffer in big endian,
-                        *  discarding fully read packets from the host as needed. The device IN acknowledgement is not
-                        *  automatically sent after success or failure states; the user is responsible for manually sending the
-                        *  setup IN to finalize the transfer via the \ref Endpoint_ClearIN() macro.
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
-                        *
-                        *  \ingroup Group_EndpointStreamRW
-                        *
-                        *  \param[out] Buffer  Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length  Number of bytes to send via the currently selected endpoint.
-                        *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
-                        */
-                       uint8_t Endpoint_Read_Control_Stream_BE(void* Buffer,
-                                                               uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
-                       
-                       /** EEPROM buffer source version of \ref Endpoint_Read_Control_Stream_BE().
-                        *
-                        *  \note This function automatically clears the control transfer's status stage. Do not manually attempt
-                        *        to clear the status stage when using this routine in a control transaction.
-                        *        \n\n
-                        *
-                        *  \note This routine should only be used on CONTROL type endpoints.
-                        *
-                        *  \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained
-                        *           together; i.e. the entire stream data must be read or written at the one time.
+                       /** Spin-loops until the currently selected non-control endpoint is ready for the next packet of data
+                        *  to be read or written to it.
                         *
-                        *  \ingroup Group_EndpointStreamRW
+                        *  \note This routine should not be called on CONTROL type endpoints.
                         *
-                        *  \param[out] Buffer  Pointer to the destination data buffer to write to.
-                        *  \param[in]  Length  Number of bytes to send via the currently selected endpoint.
+                        *  \ingroup Group_EndpointRW
                         *
-                        *  \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum.
+                        *  \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum.
                         */
-                       uint8_t Endpoint_Read_Control_EStream_BE(void* Buffer,
-                                                                uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
+                       uint8_t Endpoint_WaitUntilReady(void);
 
        /* Disable C linkage for C++ Compilers: */
                #if defined(__cplusplus)