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Diffstat (limited to 'LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h')
| -rw-r--r-- | LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h | 689 |
1 files changed, 689 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h b/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h new file mode 100644 index 0000000000..db7d840d2e --- /dev/null +++ b/LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h @@ -0,0 +1,689 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 Endpoint definitions for the AVR XMEGA microcontrollers. + * \copydetails Group_EndpointManagement_XMEGA + * + * \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_EndpointRW + * \defgroup Group_EndpointRW_XMEGA Endpoint Data Reading and Writing (XMEGA) + * \brief Endpoint data read/write definitions for the Atmel AVR XMEGA architecture. + * + * Functions, macros, variables, enums and types related to data reading and writing from and to endpoints. + */ + +/** \ingroup Group_EndpointPrimitiveRW + * \defgroup Group_EndpointPrimitiveRW_XMEGA Read/Write of Primitive Data Types (XMEGA) + * \brief Endpoint primitive read/write definitions for the Atmel AVR XMEGA architecture. + * + * Functions, macros, variables, enums and types related to data reading and writing of primitive data types + * from and to endpoints. + */ + +/** \ingroup Group_EndpointPacketManagement + * \defgroup Group_EndpointPacketManagement_XMEGA Endpoint Packet Management (XMEGA) + * \brief Endpoint packet management definitions for the Atmel AVR XMEGA architecture. + * + * Functions, macros, variables, enums and types related to packet management of endpoints. + */ + +/** \ingroup Group_EndpointManagement + * \defgroup Group_EndpointManagement_XMEGA Endpoint Management (XMEGA) + * \brief Endpoint management definitions for the Atmel AVR XMEGA architecture. + * + * 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_XMEGA_H__ +#define __ENDPOINT_XMEGA_H__ + + /* Includes: */ + #include "../../../../Common/Common.h" + #include "../USBTask.h" + #include "../USBInterrupt.h" + #include "../USBController.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 + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + #if (!defined(MAX_ENDPOINT_INDEX) && !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 16 + #else + #if defined(CONTROL_ONLY_DEVICE) + #define ENDPOINT_TOTAL_ENDPOINTS 1 + #else + #define ENDPOINT_TOTAL_ENDPOINTS (MAX_ENDPOINT_INDEX + 1) + #endif + #endif + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* Type Defines: */ + typedef struct + { + uint8_t Data[64]; + + uint8_t Length; + uint8_t Position; + } Endpoint_FIFO_t; + + typedef struct + { + Endpoint_FIFO_t OUT; + Endpoint_FIFO_t IN; + } Endpoint_FIFOPair_t; + + /* External Variables: */ + extern Endpoint_FIFOPair_t USB_Endpoint_FIFOs[ENDPOINT_TOTAL_ENDPOINTS]; + extern volatile uint8_t USB_Endpoint_SelectedEndpoint; + extern volatile USB_EP_t* USB_Endpoint_SelectedHandle; + extern volatile Endpoint_FIFO_t* USB_Endpoint_SelectedFIFO; + + /* 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 << USB_EP_BUFSIZE_gp); + } + + /* Function Prototypes: */ + bool Endpoint_ConfigureEndpoint_PRV(const uint8_t Address, + const uint8_t Config, + const uint8_t Size); + void Endpoint_ClearEndpoints(void); + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + #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 + + /* Enums: */ + /** Enum for the possible error return codes of the \ref Endpoint_WaitUntilReady() function. + * + * \ingroup Group_EndpointRW_XMEGA + */ + 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: */ + /** Selects the given endpoint address. + * + * Any endpoint operations which do not require the endpoint address to be indicated will operate on + * the currently selected endpoint. + * + * \param[in] Address Endpoint address to select. + */ + void Endpoint_SelectEndpoint(const uint8_t Address); + + /** Configures the specified endpoint address with the given endpoint type, bank size and number of hardware + * banks. Once configured, the endpoint may be read from or written to, depending on its direction. + * + * \param[in] Address Endpoint address to configure. + * + * \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] 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 hardware banks to use for the endpoint being configured. + * + * \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. + * + * \return Boolean \c true if the configuration succeeded, \c false otherwise. + */ + static inline bool Endpoint_ConfigureEndpoint(const uint8_t Address, + const uint8_t Type, + const uint16_t Size, + const uint8_t Banks) ATTR_ALWAYS_INLINE; + static inline bool Endpoint_ConfigureEndpoint(const uint8_t Address, + const uint8_t Type, + const uint16_t Size, + const uint8_t Banks) + { + uint8_t EPConfigMask = (USB_EP_INTDSBL_bm | ((Banks > 1) ? USB_EP_PINGPONG_bm : 0) | Endpoint_BytesToEPSizeMask(Size)); + + if ((Address & ENDPOINT_EPNUM_MASK) >= ENDPOINT_TOTAL_ENDPOINTS) + return false; + + // TODO - Fix once limitations are lifted + EPConfigMask &= ~USB_EP_PINGPONG_bm; + if (Size > 64) + return false; + + switch (Type) + { + case EP_TYPE_CONTROL: + EPConfigMask |= USB_EP_TYPE_CONTROL_gc; + break; + case EP_TYPE_ISOCHRONOUS: + EPConfigMask |= USB_EP_TYPE_ISOCHRONOUS_gc; + break; + default: + EPConfigMask |= USB_EP_TYPE_BULK_gc; + break; + } + + if (Type == EP_TYPE_CONTROL) + Endpoint_ConfigureEndpoint_PRV(Address ^ ENDPOINT_DIR_IN, EPConfigMask, Size); + + return Endpoint_ConfigureEndpoint_PRV(Address, EPConfigMask, Size); + } + + /** Indicates the number of bytes currently stored in the current endpoint's selected bank. + * + * \ingroup Group_EndpointRW_XMEGA + * + * \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 (USB_Endpoint_SelectedEndpoint & ENDPOINT_DIR_IN) + return USB_Endpoint_SelectedFIFO->Position; + else + return (USB_Endpoint_SelectedFIFO->Length - USB_Endpoint_SelectedFIFO->Position); + } + + /** Get the endpoint address of the currently selected endpoint. This is typically used to save + * the currently selected endpoint 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) + { + return USB_Endpoint_SelectedEndpoint; + } + + /** 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] Address Endpoint address whose FIFO buffers are to be reset. + */ + static inline void Endpoint_ResetEndpoint(const uint8_t Address) ATTR_ALWAYS_INLINE; + static inline void Endpoint_ResetEndpoint(const uint8_t Address) + { + if (Address & ENDPOINT_DIR_IN) + USB_Endpoint_FIFOs[Address & ENDPOINT_EPNUM_MASK].IN.Position = 0; + else + USB_Endpoint_FIFOs[Address & ENDPOINT_EPNUM_MASK].OUT.Position = 0; + } + + /** 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 true; + } + + /** 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_XMEGA + */ + static inline void Endpoint_AbortPendingIN(void) + { + USB_Endpoint_SelectedHandle->STATUS |= USB_EP_BUSNACK0_bm; + } + + /** 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_XMEGA + * + * \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 (USB_Endpoint_SelectedFIFO->Position < USB_Endpoint_SelectedFIFO->Length); + } + + /** 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 ((USB_Endpoint_SelectedHandle->CTRL & USB_EP_TYPE_gm) ? true : false); + } + + /** Determines if the selected IN endpoint is ready for a new packet to be sent to the host. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + * + * \return Boolean \c true if the current endpoint is ready for an IN packet, \c false otherwise. + */ + bool Endpoint_IsINReady(void) ATTR_WARN_UNUSED_RESULT; + + /** Determines if the selected OUT endpoint has received new packet from the host. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + * + * \return Boolean \c true if current endpoint is has received an OUT packet, \c false otherwise. + */ + bool Endpoint_IsOUTReceived(void) ATTR_WARN_UNUSED_RESULT; + + /** Determines if the current CONTROL type endpoint has received a SETUP packet. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + * + * \return Boolean \c true if the selected endpoint has received a SETUP packet, \c false otherwise. + */ + bool Endpoint_IsSETUPReceived(void) ATTR_WARN_UNUSED_RESULT; + + /** Clears a received SETUP packet on the currently selected CONTROL type endpoint, freeing up the + * endpoint for the next packet. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + * + * \note This is not applicable for non CONTROL type endpoints. + */ + void Endpoint_ClearSETUP(void); + + /** 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_XMEGA + */ + void Endpoint_ClearIN(void); + + /** 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_XMEGA + */ + void Endpoint_ClearOUT(void); + + /** 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_XMEGA + */ + void Endpoint_StallTransaction(void); + + /** Clears the STALL condition on the currently selected endpoint. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + */ + static inline void Endpoint_ClearStall(void) ATTR_ALWAYS_INLINE; + static inline void Endpoint_ClearStall(void) + { + USB_Endpoint_SelectedHandle->CTRL &= ~USB_EP_STALL_bm; + } + + /** Determines if the currently selected endpoint is stalled, \c false otherwise. + * + * \ingroup Group_EndpointPacketManagement_XMEGA + * + * \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 ((USB_Endpoint_SelectedHandle->CTRL & USB_EP_STALL_bm) ? 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) + { + USB_Endpoint_SelectedHandle->STATUS &= ~USB_EP_TOGGLE_bm; + } + + /** 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 (USB_Endpoint_SelectedEndpoint & ENDPOINT_DIR_IN); + } + + /** Reads one byte from the currently selected endpoint's bank, for OUT direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \return Next byte in the currently selected endpoint's FIFO buffer. + */ + uint8_t Endpoint_Read_8(void) ATTR_WARN_UNUSED_RESULT; + + /** Writes one byte to the currently selected endpoint's bank, for IN direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \param[in] Data Data to write into the the currently selected endpoint's FIFO buffer. + */ + void Endpoint_Write_8(const uint8_t Data); + + /** Discards one byte from the currently selected endpoint's bank, for OUT direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + */ + static inline void Endpoint_Discard_8(void) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Discard_8(void) + { + USB_Endpoint_SelectedFIFO->Position++; + } + + /** Reads two bytes from the currently selected endpoint's bank in little endian format, for OUT + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \return Next two bytes in the currently selected endpoint's FIFO buffer. + */ + static inline uint16_t Endpoint_Read_16_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE; + static inline uint16_t Endpoint_Read_16_LE(void) + { + uint16_t Byte0 = Endpoint_Read_8(); + uint16_t Byte1 = Endpoint_Read_8(); + + return ((Byte1 << 8) | Byte0); + } + + /** Reads two bytes from the currently selected endpoint's bank in big endian format, for OUT + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \return Next two bytes in the currently selected endpoint's FIFO buffer. + */ + static inline uint16_t Endpoint_Read_16_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE; + static inline uint16_t Endpoint_Read_16_BE(void) + { + uint16_t Byte0 = Endpoint_Read_8(); + uint16_t Byte1 = Endpoint_Read_8(); + + return ((Byte0 << 8) | Byte1); + } + + /** Writes two bytes to the currently selected endpoint's bank in little endian format, for IN + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer. + */ + static inline void Endpoint_Write_16_LE(const uint16_t Data) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Write_16_LE(const uint16_t Data) + { + Endpoint_Write_8(Data & 0xFF); + Endpoint_Write_8(Data >> 8); + } + + /** Writes two bytes to the currently selected endpoint's bank in big endian format, for IN + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer. + */ + static inline void Endpoint_Write_16_BE(const uint16_t Data) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Write_16_BE(const uint16_t Data) + { + Endpoint_Write_8(Data >> 8); + Endpoint_Write_8(Data & 0xFF); + } + + /** Discards two bytes from the currently selected endpoint's bank, for OUT direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + */ + static inline void Endpoint_Discard_16(void) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Discard_16(void) + { + Endpoint_Discard_8(); + Endpoint_Discard_8(); + } + + /** Reads four bytes from the currently selected endpoint's bank in little endian format, for OUT + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \return Next four bytes in the currently selected endpoint's FIFO buffer. + */ + static inline uint32_t Endpoint_Read_32_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE; + static inline uint32_t Endpoint_Read_32_LE(void) + { + uint32_t Byte0 = Endpoint_Read_8(); + uint32_t Byte1 = Endpoint_Read_8(); + uint32_t Byte2 = Endpoint_Read_8(); + uint32_t Byte3 = Endpoint_Read_8(); + + return ((Byte3 << 24) | (Byte2 << 16) | (Byte1 << 8) | Byte0); + } + + /** Reads four bytes from the currently selected endpoint's bank in big endian format, for OUT + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \return Next four bytes in the currently selected endpoint's FIFO buffer. + */ + static inline uint32_t Endpoint_Read_32_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE; + static inline uint32_t Endpoint_Read_32_BE(void) + { + uint32_t Byte0 = Endpoint_Read_8(); + uint32_t Byte1 = Endpoint_Read_8(); + uint32_t Byte2 = Endpoint_Read_8(); + uint32_t Byte3 = Endpoint_Read_8(); + + return ((Byte0 << 24) | (Byte1 << 16) | (Byte2 << 8) | Byte3); + } + + /** Writes four bytes to the currently selected endpoint's bank in little endian format, for IN + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer. + */ + static inline void Endpoint_Write_32_LE(const uint32_t Data) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Write_32_LE(const uint32_t Data) + { + Endpoint_Write_8(Data & 0xFF); + Endpoint_Write_8(Data >> 8); + Endpoint_Write_8(Data >> 16); + Endpoint_Write_8(Data >> 24); + } + + /** Writes four bytes to the currently selected endpoint's bank in big endian format, for IN + * direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + * + * \param[in] Data Data to write to the currently selected endpoint's FIFO buffer. + */ + static inline void Endpoint_Write_32_BE(const uint32_t Data) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Write_32_BE(const uint32_t Data) + { + Endpoint_Write_8(Data >> 24); + Endpoint_Write_8(Data >> 16); + Endpoint_Write_8(Data >> 8); + Endpoint_Write_8(Data & 0xFF); + } + + /** Discards four bytes from the currently selected endpoint's bank, for OUT direction endpoints. + * + * \ingroup Group_EndpointPrimitiveRW_XMEGA + */ + static inline void Endpoint_Discard_32(void) ATTR_ALWAYS_INLINE; + static inline void Endpoint_Discard_32(void) + { + Endpoint_Discard_8(); + Endpoint_Discard_8(); + Endpoint_Discard_8(); + Endpoint_Discard_8(); + } + + /* 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. + * + * \attention 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_Device_ControlEndpointSize; + #else + #define USB_Device_ControlEndpointSize FIXED_CONTROL_ENDPOINT_SIZE + #endif + + /* Function Prototypes: */ + /** Configures a table of endpoint descriptions, in sequence. This function can be used to configure multiple + * endpoints at the same time. + * + * \note Endpoints with a zero address will be ignored, thus this function cannot be used to configure the + * control endpoint. + * + * \param[in] Table Pointer to a table of endpoint descriptions. + * \param[in] Entries Number of entries in the endpoint table to configure. + * + * \return Boolean \c true if all endpoints configured successfully, \c false otherwise. + */ + bool Endpoint_ConfigureEndpointTable(const USB_Endpoint_Table_t* const Table, + const uint8_t Entries); + + /** 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. + * + * \note This routine should not be called on non CONTROL type endpoints. + */ + 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_XMEGA + * + * \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 + +/** @} */ + |