+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- 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
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- * \brief USB device endpoint management definitions.
- *
- * This file contains structures, function prototypes and macros related to the management of the device's
- * data endpoints when the library is initialized in USB device mode.
- *
- * \note This file should not be included directly. It is automatically included as needed by the USB driver
- * dispatch header located in LUFA/Drivers/USB/USB.h.
- */
-
-/** \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
- * \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_EndpointManagement
- * \defgroup Group_EndpointPacketManagement Endpoint Packet Management
- *
- * Functions, macros, variables, enums and types related to packet management of endpoints.
- */
-
-/** \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.
- *
- * @{
- */
-
-#ifndef __ENDPOINT_H__
-#define __ENDPOINT_H__
-
- /* Includes: */
- #include <avr/io.h>
- #include <stdbool.h>
-
- #include "../../../Common/Common.h"
- #include "../HighLevel/USBTask.h"
- #include "USBInterrupt.h"
-
- /* Enable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- extern "C" {
- #endif
-
- /* Preprocessor Checks: */
- #if !defined(__INCLUDE_FROM_USB_DRIVER)
- #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
- #endif
-
- /* Private Interface - For use in library only: */
- #if !defined(__DOXYGEN__)
- /* Macros: */
- #define _ENDPOINT_GET_MAXSIZE(EPIndex) _ENDPOINT_GET_MAXSIZE2(ENDPOINT_DETAILS_EP ## EPIndex)
- #define _ENDPOINT_GET_MAXSIZE2(EPDetails) _ENDPOINT_GET_MAXSIZE3(EPDetails)
- #define _ENDPOINT_GET_MAXSIZE3(MaxSize, Banks) (MaxSize)
-
- #define _ENDPOINT_GET_BANKS(EPIndex) _ENDPOINT_GET_BANKS2(ENDPOINT_DETAILS_EP ## EPIndex)
- #define _ENDPOINT_GET_BANKS2(EPDetails) _ENDPOINT_GET_BANKS3(EPDetails)
- #define _ENDPOINT_GET_BANKS3(MaxSize, Banks) (Banks)
-
- #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
- #define ENDPOINT_DETAILS_MAXEP 7
-
- #define ENDPOINT_DETAILS_EP0 64, 2
- #define ENDPOINT_DETAILS_EP1 256, 2
- #define ENDPOINT_DETAILS_EP2 64, 2
- #define ENDPOINT_DETAILS_EP3 64, 2
- #define ENDPOINT_DETAILS_EP4 64, 2
- #define ENDPOINT_DETAILS_EP5 64, 2
- #define ENDPOINT_DETAILS_EP6 64, 2
- #else
- #define ENDPOINT_DETAILS_MAXEP 5
-
- #define ENDPOINT_DETAILS_EP0 64, 2
- #define ENDPOINT_DETAILS_EP1 64, 1
- #define ENDPOINT_DETAILS_EP2 64, 1
- #define ENDPOINT_DETAILS_EP3 64, 2
- #define ENDPOINT_DETAILS_EP4 64, 2
- #endif
-
- /* Inline Functions: */
- static inline uint8_t Endpoint_BytesToEPSizeMask(const uint16_t Bytes) ATTR_WARN_UNUSED_RESULT ATTR_CONST
- ATTR_ALWAYS_INLINE;
- static inline uint8_t Endpoint_BytesToEPSizeMask(const uint16_t Bytes)
- {
- uint8_t MaskVal = 0;
- uint16_t CheckBytes = 8;
-
- while (CheckBytes < Bytes)
- {
- MaskVal++;
- CheckBytes <<= 1;
- }
-
- return (MaskVal << EPSIZE0);
- }
-
- /* Function Prototypes: */
- void Endpoint_ClearEndpoints(void);
- bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number,
- const uint8_t UECFG0XData,
- const uint8_t UECFG1XData);
-
- #endif
-
- /* Public Interface - May be used in end-application: */
- /* Macros: */
- /** \name Endpoint Direction Masks */
- //@{
- /** Endpoint data direction mask for \ref Endpoint_ConfigureEndpoint(). This indicates that the endpoint
- * should be initialized in the OUT direction - i.e. data flows from host to device.
- */
- #define ENDPOINT_DIR_OUT (0 << EPDIR)
-
- /** Endpoint data direction mask for \ref Endpoint_ConfigureEndpoint(). This indicates that the endpoint
- * should be initialized in the IN direction - i.e. data flows from device to host.
- */
- #define ENDPOINT_DIR_IN (1 << EPDIR)
- //@}
-
- /** \name Endpoint Bank Mode Masks */
- //@{
- /** Mask for the bank mode selection for the \ref Endpoint_ConfigureEndpoint() macro. This indicates
- * that the endpoint should have one single bank, which requires less USB FIFO memory but results
- * in slower transfers as only one USB device (the AVR or the host) can access the endpoint's
- * bank at the one time.
- */
- #define ENDPOINT_BANK_SINGLE (0 << EPBK0)
-
- /** Mask for the bank mode selection for the \ref Endpoint_ConfigureEndpoint() macro. This indicates
- * that the endpoint should have two banks, which requires more USB FIFO memory but results
- * in faster transfers as one USB device (the AVR or the host) can access one bank while the other
- * accesses the second bank.
- */
- #define ENDPOINT_BANK_DOUBLE (1 << EPBK0)
- //@}
-
- /** Endpoint address for the default control endpoint, which always resides in address 0. This is
- * defined for convenience to give more readable code when used with the endpoint macros.
- */
- #define ENDPOINT_CONTROLEP 0
-
- #if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))
- /** Default size of the default control endpoint's bank, until altered by the control endpoint bank size
- * value in the device descriptor. Not available if the \c FIXED_CONTROL_ENDPOINT_SIZE token is defined.
- */
- #define ENDPOINT_CONTROLEP_DEFAULT_SIZE 8
- #endif
-
- /** Endpoint number mask, for masking against endpoint addresses to retrieve the endpoint's
- * numerical address in the device.
- */
- #define ENDPOINT_EPNUM_MASK 0x07
-
- /** Endpoint direction mask, for masking against endpoint addresses to retrieve the endpoint's
- * direction for comparing with the \c ENDPOINT_DESCRIPTOR_DIR_* masks.
- */
- #define ENDPOINT_EPDIR_MASK 0x80
-
- /** Endpoint bank size mask, for masking against endpoint addresses to retrieve the endpoint's
- * bank size in the device.
- */
- #define ENDPOINT_EPSIZE_MASK 0x7F
-
- /** Retrives the maximum bank size in bytes of a given endpoint.
- *
- * \note This macro will only work correctly on endpoint indexes that are compile-time constants
- * defined by the preprocessor.
- *
- * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
- */
- #define ENDPOINT_MAX_SIZE(EPIndex) _ENDPOINT_GET_MAXSIZE(EPIndex)
-
- /** Retrieves the total number of banks supported by the given endpoint.
- *
- * \note This macro will only work correctly on endpoint indexes that are compile-time constants
- * defined by the preprocessor.
- *
- * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
- */
- #define ENDPOINT_BANKS_SUPPORTED(EPIndex) _ENDPOINT_GET_BANKS(EPIndex)
-
- #if !defined(CONTROL_ONLY_DEVICE) || defined(__DOXYGEN__)
- /** Total number of endpoints (including the default control endpoint at address 0) which may
- * be used in the device. Different USB AVR models support different amounts of endpoints,
- * this value reflects the maximum number of endpoints for the currently selected AVR model.
- */
- #define ENDPOINT_TOTAL_ENDPOINTS ENDPOINT_DETAILS_MAXEP
- #else
- #define ENDPOINT_TOTAL_ENDPOINTS 1
- #endif
-
- /* Enums: */
- /** Enum for the possible error return codes of the \ref Endpoint_WaitUntilReady() function.
- *
- * \ingroup Group_EndpointRW
- */
- enum Endpoint_WaitUntilReady_ErrorCodes_t
- {
- ENDPOINT_READYWAIT_NoError = 0, /**< Endpoint is ready for next packet, no error. */
- ENDPOINT_READYWAIT_EndpointStalled = 1, /**< The endpoint was stalled during the stream
- * transfer by the host or device.
- */
- ENDPOINT_READYWAIT_DeviceDisconnected = 2, /**< Device was disconnected from the host while
- * waiting for the endpoint to become ready.
- */
- ENDPOINT_READYWAIT_BusSuspended = 3, /**< The USB bus has been suspended by the host and
- * no USB endpoint traffic can occur until the bus
- * has resumed.
- */
- ENDPOINT_READYWAIT_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.
- */
- };
-
- /* Inline Functions: */
- /** Configures the specified endpoint number with the given endpoint type, direction, bank size
- * and banking mode. Once configured, the endpoint may be read from or written to, depending
- * on its direction.
- *
- * \param[in] Number Endpoint number to configure. This must be more than 0 and less than
- * \ref ENDPOINT_TOTAL_ENDPOINTS.
- *
- * \param[in] Type Type of endpoint to configure, a \c EP_TYPE_* mask. Not all endpoint types
- * are available on Low Speed USB devices - refer to the USB 2.0 specification.
- *
- * \param[in] Direction Endpoint data direction, either \ref ENDPOINT_DIR_OUT or \ref ENDPOINT_DIR_IN.
- * All endpoints (except Control type) are unidirectional - data may only be read
- * from or written to the endpoint bank based on its direction, not both.
- *
- * \param[in] Size Size of the endpoint's bank, where packets are stored before they are transmitted
- * to the USB host, or after they have been received from the USB host (depending on
- * the endpoint's data direction). The bank size must indicate the maximum packet size
- * that the endpoint can handle.
- *
- * \param[in] Banks Number of banks to use for the endpoint being configured, an \c ENDPOINT_BANK_* mask.
- * More banks uses more USB DPRAM, but offers better performance. Isochronous type
- * endpoints <b>must</b> have at least two banks.
- *
- * \note When the \c ORDERED_EP_CONFIG compile time option is used, Endpoints <b>must</b> be configured in
- * ascending order, or bank corruption will occur.
- * \n\n
- *
- * \note Certain models of USB AVR's endpoints may have different maximum packet sizes based on the endpoint's
- * index - refer to the chosen USB AVR's datasheet to determine the maximum bank size for each endpoint.
- * \n\n
- *
- * \note The default control endpoint should not be manually configured by the user application, as
- * it is automatically configured by the library internally.
- * \n\n
- *
- * \note This routine will automatically select the specified endpoint upon success. Upon failure, the endpoint
- * which failed to reconfigure correctly will be selected.
- *
- * \return Boolean \c true if the configuration succeeded, \c false otherwise.
- */
- static inline bool Endpoint_ConfigureEndpoint(const uint8_t Number,
- const uint8_t Type,
- const uint8_t Direction,
- const uint16_t Size,
- const uint8_t Banks) ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_ConfigureEndpoint(const uint8_t Number,
- const uint8_t Type,
- const uint8_t Direction,
- const uint16_t Size,
- const uint8_t Banks)
- {
- return Endpoint_ConfigureEndpoint_Prv(Number, (((Type) << EPTYPE0) | (Direction)),
- ((1 << ALLOC) | Banks | Endpoint_BytesToEPSizeMask(Size)));
- }
-
- /** Indicates the number of bytes currently stored in the current endpoint's selected bank.
- *
- * \note The return width of this function may differ, depending on the maximum endpoint bank size
- * of the selected AVR model.
- *
- * \ingroup Group_EndpointRW
- *
- * \return Total number of bytes in the currently selected Endpoint's FIFO buffer.
- */
- static inline uint16_t Endpoint_BytesInEndpoint(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint16_t Endpoint_BytesInEndpoint(void)
- {
- #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
- return UEBCX;
- #elif defined(USB_SERIES_4_AVR)
- return (((uint16_t)UEBCHX << 8) | UEBCLX);
- #elif defined(USB_SERIES_2_AVR)
- return UEBCLX;
- #endif
- }
-
- /** Get the endpoint address of the currently selected endpoint. This is typically used to save
- * the currently selected endpoint number so that it can be restored after another endpoint has
- * been manipulated.
- *
- * \return Index of the currently selected endpoint.
- */
- static inline uint8_t Endpoint_GetCurrentEndpoint(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint8_t Endpoint_GetCurrentEndpoint(void)
- {
- #if !defined(CONTROL_ONLY_DEVICE)
- return (UENUM & ENDPOINT_EPNUM_MASK);
- #else
- return ENDPOINT_CONTROLEP;
- #endif
- }
-
- /** Selects the given endpoint number. If the address from the device descriptors is used, the
- * value should be masked with the \ref ENDPOINT_EPNUM_MASK constant to extract only the endpoint
- * number (and discarding the endpoint direction bit).
- *
- * Any endpoint operations which do not require the endpoint number to be indicated will operate on
- * the currently selected endpoint.
- *
- * \param[in] EndpointNumber Endpoint number to select.
- */
- static inline void Endpoint_SelectEndpoint(const uint8_t EndpointNumber) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_SelectEndpoint(const uint8_t EndpointNumber)
- {
- #if !defined(CONTROL_ONLY_DEVICE)
- UENUM = EndpointNumber;
- #endif
- }
-
- /** Resets the endpoint bank FIFO. This clears all the endpoint banks and resets the USB controller's
- * data In and Out pointers to the bank's contents.
- *
- * \param[in] EndpointNumber Endpoint number whose FIFO buffers are to be reset.
- */
- static inline void Endpoint_ResetFIFO(const uint8_t EndpointNumber) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ResetFIFO(const uint8_t EndpointNumber)
- {
- UERST = (1 << EndpointNumber);
- UERST = 0;
- }
-
- /** Enables the currently selected endpoint so that data can be sent and received through it to
- * and from a host.
- *
- * \note Endpoints must first be configured properly via \ref Endpoint_ConfigureEndpoint().
- */
- static inline void Endpoint_EnableEndpoint(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_EnableEndpoint(void)
- {
- UECONX |= (1 << EPEN);
- }
-
- /** Disables the currently selected endpoint so that data cannot be sent and received through it
- * to and from a host.
- */
- static inline void Endpoint_DisableEndpoint(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_DisableEndpoint(void)
- {
- UECONX &= ~(1 << EPEN);
- }
-
- /** Determines if the currently selected endpoint is enabled, but not necessarily configured.
- *
- * \return Boolean \c true if the currently selected endpoint is enabled, \c false otherwise.
- */
- static inline bool Endpoint_IsEnabled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsEnabled(void)
- {
- return ((UECONX & (1 << EPEN)) ? true : false);
- }
-
- /** Aborts all pending IN transactions on the currently selected endpoint, once the bank
- * has been queued for transmission to the host via \ref Endpoint_ClearIN(). This function
- * will terminate all queued transactions, resetting the endpoint banks ready for a new
- * packet.
- *
- * \ingroup Group_EndpointPacketManagement
- */
- static inline void Endpoint_AbortPendingIN(void)
- {
- while (UESTA0X & (0x03 << NBUSYBK0))
- {
- UEINTX |= (1 << RXOUTI);
- while (UEINTX & (1 << RXOUTI));
- }
- }
-
- /** Retrieves the number of busy banks in the currently selected endpoint, which have been queued for
- * transmission via the \ref Endpoint_ClearIN() command, or are awaiting acknowledgement via the
- * \ref Endpoint_ClearOUT() command.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Total number of busy banks in the selected endpoint.
- */
- static inline uint8_t Endpoint_GetBusyBanks(void)
- {
- return (UESTA0X & (0x03 << NBUSYBK0));
- }
-
- /** Determines if the currently selected endpoint may be read from (if data is waiting in the endpoint
- * bank and the endpoint is an OUT direction, or if the bank is not yet full if the endpoint is an IN
- * direction). This function will return false if an error has occurred in the endpoint, if the endpoint
- * is an OUT direction and no packet (or an empty packet) has been received, or if the endpoint is an IN
- * direction and the endpoint bank is full.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Boolean \c true if the currently selected endpoint may be read from or written to, depending
- * on its direction.
- */
- static inline bool Endpoint_IsReadWriteAllowed(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsReadWriteAllowed(void)
- {
- return ((UEINTX & (1 << RWAL)) ? true : false);
- }
-
- /** Determines if the currently selected endpoint is configured.
- *
- * \return Boolean \c true if the currently selected endpoint has been configured, \c false otherwise.
- */
- static inline bool Endpoint_IsConfigured(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsConfigured(void)
- {
- return ((UESTA0X & (1 << CFGOK)) ? true : false);
- }
-
- /** Returns a mask indicating which INTERRUPT type endpoints have interrupted - i.e. their
- * interrupt duration has elapsed. Which endpoints have interrupted can be determined by
- * masking the return value against <tt>(1 << <i>{Endpoint Number}</i>)</tt>.
- *
- * \return Mask whose bits indicate which endpoints have interrupted.
- */
- static inline uint8_t Endpoint_GetEndpointInterrupts(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint8_t Endpoint_GetEndpointInterrupts(void)
- {
- return UEINT;
- }
-
- /** Determines if the specified endpoint number has interrupted (valid only for INTERRUPT type
- * endpoints).
- *
- * \param[in] EndpointNumber Index of the endpoint whose interrupt flag should be tested.
- *
- * \return Boolean \c true if the specified endpoint has interrupted, \c false otherwise.
- */
- static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber)
- {
- return ((UEINT & (1 << EndpointNumber)) ? true : false);
- }
-
- /** Determines if the selected IN endpoint is ready for a new packet to be sent to the host.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Boolean \c true if the current endpoint is ready for an IN packet, \c false otherwise.
- */
- static inline bool Endpoint_IsINReady(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsINReady(void)
- {
- return ((UEINTX & (1 << TXINI)) ? true : false);
- }
-
- /** Determines if the selected OUT endpoint has received new packet from the host.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Boolean \c true if current endpoint is has received an OUT packet, \c false otherwise.
- */
- static inline bool Endpoint_IsOUTReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsOUTReceived(void)
- {
- return ((UEINTX & (1 << RXOUTI)) ? true : false);
- }
-
- /** Determines if the current CONTROL type endpoint has received a SETUP packet.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Boolean \c true if the selected endpoint has received a SETUP packet, \c false otherwise.
- */
- static inline bool Endpoint_IsSETUPReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsSETUPReceived(void)
- {
- return ((UEINTX & (1 << RXSTPI)) ? true : false);
- }
-
- /** Clears a received SETUP packet on the currently selected CONTROL type endpoint, freeing up the
- * endpoint for the next packet.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \note This is not applicable for non CONTROL type endpoints.
- */
- static inline void Endpoint_ClearSETUP(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ClearSETUP(void)
- {
- UEINTX &= ~(1 << RXSTPI);
- }
-
- /** Sends an IN packet to the host on the currently selected endpoint, freeing up the endpoint for the
- * next packet and switching to the alternative endpoint bank if double banked.
- *
- * \ingroup Group_EndpointPacketManagement
- */
- static inline void Endpoint_ClearIN(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ClearIN(void)
- {
- #if !defined(CONTROL_ONLY_DEVICE)
- UEINTX &= ~((1 << TXINI) | (1 << FIFOCON));
- #else
- UEINTX &= ~(1 << TXINI);
- #endif
- }
-
- /** Acknowledges an OUT packet to the host on the currently selected endpoint, freeing up the endpoint
- * for the next packet and switching to the alternative endpoint bank if double banked.
- *
- * \ingroup Group_EndpointPacketManagement
- */
- static inline void Endpoint_ClearOUT(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ClearOUT(void)
- {
- #if !defined(CONTROL_ONLY_DEVICE)
- UEINTX &= ~((1 << RXOUTI) | (1 << FIFOCON));
- #else
- UEINTX &= ~(1 << RXOUTI);
- #endif
- }
-
- /** Stalls the current endpoint, indicating to the host that a logical problem occurred with the
- * indicated endpoint and that the current transfer sequence should be aborted. This provides a
- * way for devices to indicate invalid commands to the host so that the current transfer can be
- * aborted and the host can begin its own recovery sequence.
- *
- * The currently selected endpoint remains stalled until either the \ref Endpoint_ClearStall() macro
- * is called, or the host issues a CLEAR FEATURE request to the device for the currently selected
- * endpoint.
- *
- * \ingroup Group_EndpointPacketManagement
- */
- static inline void Endpoint_StallTransaction(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_StallTransaction(void)
- {
- UECONX |= (1 << STALLRQ);
- }
-
- /** Clears the STALL condition on the currently selected endpoint.
- *
- * \ingroup Group_EndpointPacketManagement
- */
- static inline void Endpoint_ClearStall(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ClearStall(void)
- {
- UECONX |= (1 << STALLRQC);
- }
-
- /** Determines if the currently selected endpoint is stalled, false otherwise.
- *
- * \ingroup Group_EndpointPacketManagement
- *
- * \return Boolean \c true if the currently selected endpoint is stalled, \c false otherwise.
- */
- static inline bool Endpoint_IsStalled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline bool Endpoint_IsStalled(void)
- {
- return ((UECONX & (1 << STALLRQ)) ? true : false);
- }
-
- /** Resets the data toggle of the currently selected endpoint. */
- static inline void Endpoint_ResetDataToggle(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_ResetDataToggle(void)
- {
- UECONX |= (1 << RSTDT);
- }
-
- /** Determines the currently selected endpoint's direction.
- *
- * \return The currently selected endpoint's direction, as a \c ENDPOINT_DIR_* mask.
- */
- static inline uint8_t Endpoint_GetEndpointDirection(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint8_t Endpoint_GetEndpointDirection(void)
- {
- return (UECFG0X & ENDPOINT_DIR_IN);
- }
-
- /** Sets the direction of the currently selected endpoint.
- *
- * \param[in] DirectionMask New endpoint direction, as a \c ENDPOINT_DIR_* mask.
- */
- static inline void Endpoint_SetEndpointDirection(const uint8_t DirectionMask) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_SetEndpointDirection(const uint8_t DirectionMask)
- {
- UECFG0X = ((UECFG0X & ~ENDPOINT_DIR_IN) | DirectionMask);
- }
-
- /** Reads one byte from the currently selected endpoint's bank, for OUT direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \return Next byte in the currently selected endpoint's FIFO buffer.
- */
- static inline uint8_t Endpoint_Read_Byte(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint8_t Endpoint_Read_Byte(void)
- {
- return UEDATX;
- }
-
- /** Writes one byte from the currently selected endpoint's bank, for IN direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \param[in] Byte Next byte to write into the the currently selected endpoint's FIFO buffer.
- */
- static inline void Endpoint_Write_Byte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Write_Byte(const uint8_t Byte)
- {
- UEDATX = Byte;
- }
-
- /** Discards one byte from the currently selected endpoint's bank, for OUT direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- */
- static inline void Endpoint_Discard_Byte(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Discard_Byte(void)
- {
- uint8_t Dummy;
-
- Dummy = UEDATX;
- }
-
- /** Reads two bytes from the currently selected endpoint's bank in little endian format, for OUT
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \return Next word in the currently selected endpoint's FIFO buffer.
- */
- static inline uint16_t Endpoint_Read_Word_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint16_t Endpoint_Read_Word_LE(void)
- {
- union
- {
- uint16_t Word;
- uint8_t Bytes[2];
- } Data;
-
- Data.Bytes[0] = UEDATX;
- Data.Bytes[1] = UEDATX;
-
- return Data.Word;
- }
-
- /** Reads two bytes from the currently selected endpoint's bank in big endian format, for OUT
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \return Next word in the currently selected endpoint's FIFO buffer.
- */
- static inline uint16_t Endpoint_Read_Word_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint16_t Endpoint_Read_Word_BE(void)
- {
- union
- {
- uint16_t Word;
- uint8_t Bytes[2];
- } Data;
-
- Data.Bytes[1] = UEDATX;
- Data.Bytes[0] = UEDATX;
-
- return Data.Word;
- }
-
- /** Writes two bytes to the currently selected endpoint's bank in little endian format, for IN
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \param[in] Word Next word to write to the currently selected endpoint's FIFO buffer.
- */
- static inline void Endpoint_Write_Word_LE(const uint16_t Word) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Write_Word_LE(const uint16_t Word)
- {
- UEDATX = (Word & 0xFF);
- UEDATX = (Word >> 8);
- }
-
- /** Writes two bytes to the currently selected endpoint's bank in big endian format, for IN
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \param[in] Word Next word to write to the currently selected endpoint's FIFO buffer.
- */
- static inline void Endpoint_Write_Word_BE(const uint16_t Word) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Write_Word_BE(const uint16_t Word)
- {
- UEDATX = (Word >> 8);
- UEDATX = (Word & 0xFF);
- }
-
- /** Discards two bytes from the currently selected endpoint's bank, for OUT direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- */
- static inline void Endpoint_Discard_Word(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Discard_Word(void)
- {
- uint8_t Dummy;
-
- Dummy = UEDATX;
- Dummy = UEDATX;
- }
-
- /** Reads four bytes from the currently selected endpoint's bank in little endian format, for OUT
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \return Next double word in the currently selected endpoint's FIFO buffer.
- */
- static inline uint32_t Endpoint_Read_DWord_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint32_t Endpoint_Read_DWord_LE(void)
- {
- union
- {
- uint32_t DWord;
- uint8_t Bytes[4];
- } Data;
-
- Data.Bytes[0] = UEDATX;
- Data.Bytes[1] = UEDATX;
- Data.Bytes[2] = UEDATX;
- Data.Bytes[3] = UEDATX;
-
- return Data.DWord;
- }
-
- /** Reads four bytes from the currently selected endpoint's bank in big endian format, for OUT
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \return Next double word in the currently selected endpoint's FIFO buffer.
- */
- static inline uint32_t Endpoint_Read_DWord_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
- static inline uint32_t Endpoint_Read_DWord_BE(void)
- {
- union
- {
- uint32_t DWord;
- uint8_t Bytes[4];
- } Data;
-
- Data.Bytes[3] = UEDATX;
- Data.Bytes[2] = UEDATX;
- Data.Bytes[1] = UEDATX;
- Data.Bytes[0] = UEDATX;
-
- return Data.DWord;
- }
-
- /** Writes four bytes to the currently selected endpoint's bank in little endian format, for IN
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \param[in] DWord Next double word to write to the currently selected endpoint's FIFO buffer.
- */
- static inline void Endpoint_Write_DWord_LE(const uint32_t DWord) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Write_DWord_LE(const uint32_t DWord)
- {
- UEDATX = (DWord & 0xFF);
- UEDATX = (DWord >> 8);
- UEDATX = (DWord >> 16);
- UEDATX = (DWord >> 24);
- }
-
- /** Writes four bytes to the currently selected endpoint's bank in big endian format, for IN
- * direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- *
- * \param[in] DWord Next double word to write to the currently selected endpoint's FIFO buffer.
- */
- static inline void Endpoint_Write_DWord_BE(const uint32_t DWord) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Write_DWord_BE(const uint32_t DWord)
- {
- UEDATX = (DWord >> 24);
- UEDATX = (DWord >> 16);
- UEDATX = (DWord >> 8);
- UEDATX = (DWord & 0xFF);
- }
-
- /** Discards four bytes from the currently selected endpoint's bank, for OUT direction endpoints.
- *
- * \ingroup Group_EndpointPrimitiveRW
- */
- static inline void Endpoint_Discard_DWord(void) ATTR_ALWAYS_INLINE;
- static inline void Endpoint_Discard_DWord(void)
- {
- uint8_t Dummy;
-
- Dummy = UEDATX;
- Dummy = UEDATX;
- Dummy = UEDATX;
- Dummy = UEDATX;
- }
-
- /* External Variables: */
- /** Global indicating the maximum packet size of the default control endpoint located at address
- * 0 in the device. This value is set to the value indicated in the device descriptor in the user
- * project once the USB interface is initialized into device mode.
- *
- * If space is an issue, it is possible to fix this to a static value by defining the control
- * endpoint size in the \c FIXED_CONTROL_ENDPOINT_SIZE token passed to the compiler in the makefile
- * via the -D switch. When a fixed control endpoint size is used, the size is no longer dynamically
- * read from the descriptors at runtime and instead fixed to the given value. When used, it is
- * important that the descriptor control endpoint size value matches the size given as the
- * \c FIXED_CONTROL_ENDPOINT_SIZE token - it is recommended that the \c FIXED_CONTROL_ENDPOINT_SIZE token
- * be used in the device descriptors to ensure this.
- *
- * \note This variable should be treated as read-only in the user application, and never manually
- * changed in value.
- */
- #if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))
- extern uint8_t USB_ControlEndpointSize;
- #else
- #define USB_ControlEndpointSize FIXED_CONTROL_ENDPOINT_SIZE
- #endif
-
- /* Function Prototypes: */
- /** 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);
-
- /** 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);
-
- /* Disable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- }
- #endif
-
-#endif
-
-/** @} */
-
projects / pub / lufa.git / blobdiff