* dispatch header located in LUFA/Drivers/USB/USB.h.
*/
-/** \ingroup Group_USB
- * @defgroup Group_PipeManagement Pipe Management
- *
- * This module contains functions, macros and enums related to pipe management when in USB Host mode. This
- * module contains the pipe management macros, as well as pipe interrupt and data send/receive functions
- * for various data types.
- *
- * @{
- */
-
-/** @defgroup Group_PipeRW Pipe Data Reading and Writing
+/** \ingroup Group_PipeManagement
+ * @defgroup Group_PipeRW Pipe Data Reading and Writing
*
* Functions, macros, variables, enums and types related to data reading and writing from and to pipes.
*/
*
* Functions, macros, variables, enums and types related to data reading and writing of primitive data types
* from and to pipes.
- */
-
-/** \ingroup Group_PipeRW
- * @defgroup Group_PipeStreamRW Read/Write of Multi-Byte Streams
- *
- * Functions, macros, variables, enums and types related to data reading and writing of data streams from
- * and to pipes.
- */
+ */
-/** @defgroup Group_PipePacketManagement Pipe Packet Management
+/** \ingroup Group_PipeManagement
+ * @defgroup Group_PipePacketManagement Pipe Packet Management
*
* Functions, macros, variables, enums and types related to packet management of pipes.
*/
-/** @defgroup Group_PipeControlReq Pipe Control Request Management
+/** \ingroup Group_PipeManagement
+ * @defgroup Group_PipeControlReq Pipe Control Request Management
*
* Module for host mode request processing. This module allows for the transmission of standard, class and
* vendor control requests to the default control endpoint of an attached device while in host mode.
* \see Chapter 9 of the USB 2.0 specification.
*/
+/** \ingroup Group_USB
+ * @defgroup Group_PipeManagement Pipe Management
+ *
+ * This module contains functions, macros and enums related to pipe management when in USB Host mode. This
+ * module contains the pipe management macros, as well as pipe interrupt and data send/receive functions
+ * for various data types.
+ *
+ * @{
+ */
+
#ifndef __PIPE_H__
#define __PIPE_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"
-
- #if !defined(NO_STREAM_CALLBACKS) || defined(__DOXYGEN__)
- #include "../HighLevel/StreamCallbacks.h"
- #endif
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
*/
#define PIPE_EPDIR_MASK 0x80
- /* Pseudo-Function Macros: */
- #if defined(__DOXYGEN__)
- /** Indicates the number of bytes currently stored in the current pipes's selected bank.
- *
- * \note The return width of this function may differ, depending on the maximum pipe bank size
- * of the selected AVR model.
- *
- * \ingroup Group_PipeRW
- *
- * \return Total number of bytes in the currently selected Pipe's FIFO buffer
- */
- static inline uint16_t Pipe_BytesInPipe(void);
-
- /** Returns the pipe address of the currently selected pipe. This is typically used to save the
- * currently selected pipe number so that it can be restored after another pipe has been manipulated.
- *
- * \return Index of the currently selected pipe
- */
- static inline uint8_t Pipe_GetCurrentPipe(void);
-
- /** Selects the given pipe number. Any pipe operations which do not require the pipe number to be
- * indicated will operate on the currently selected pipe.
- *
- * \param[in] PipeNumber Index of the pipe to select
- */
- static inline void Pipe_SelectPipe(uint8_t PipeNumber);
-
- /** Resets the desired pipe, including the pipe banks and flags.
- *
- * \param[in] PipeNumber Index of the pipe to reset
- */
- static inline void Pipe_ResetPipe(uint8_t PipeNumber);
-
- /** Enables the currently selected pipe so that data can be sent and received through it to and from
- * an attached device.
- *
- * \note Pipes must first be configured properly via \ref Pipe_ConfigurePipe().
- */
- static inline void Pipe_EnablePipe(void);
-
- /** Disables the currently selected pipe so that data cannot be sent and received through it to and
- * from an attached device.
- */
- static inline void Pipe_DisablePipe(void);
-
- /** Determines if the currently selected pipe is enabled, but not necessarily configured.
- *
- * \return Boolean True if the currently selected pipe is enabled, false otherwise
- */
- static inline bool Pipe_IsEnabled(void);
-
- /** Gets the current pipe token, indicating the pipe's data direction and type.
- *
- * \return The current pipe token, as a PIPE_TOKEN_* mask
- */
- static inline uint8_t Pipe_GetPipeToken(void);
-
- /** Sets the token for the currently selected pipe to one of the tokens specified by the PIPE_TOKEN_*
- * masks. This can be used on CONTROL type pipes, to allow for bidirectional transfer of data during
- * control requests, or on regular pipes to allow for half-duplex bidirectional data transfer to devices
- * which have two endpoints of opposite direction sharing the same endpoint address within the device.
- *
- * \param[in] Token New pipe token to set the selected pipe to, as a PIPE_TOKEN_* mask
- */
- static inline void Pipe_SetPipeToken(uint8_t Token);
-
- /** Configures the currently selected pipe to allow for an unlimited number of IN requests. */
- static inline void Pipe_SetInfiniteINRequests(void);
-
- /** Configures the currently selected pipe to only allow the specified number of IN requests to be
- * accepted by the pipe before it is automatically frozen.
- *
- * \param[in] TotalINRequests Total number of IN requests that the pipe may receive before freezing
- */
- static inline void Pipe_SetFiniteINRequests(uint8_t TotalINRequests);
-
- /** Determines if the currently selected pipe is configured.
- *
- * \return Boolean true if the selected pipe is configured, false otherwise
- */
- static inline bool Pipe_IsConfigured(void);
-
- /** Retrieves the endpoint number of the endpoint within the attached device that the currently selected
- * pipe is bound to.
- *
- * \return Endpoint number the currently selected pipe is bound to
- */
- static inline uint8_t Pipe_BoundEndpointNumber(void);
-
- /** Sets the period between interrupts for an INTERRUPT type pipe to a specified number of milliseconds.
- *
- * \param[in] Milliseconds Number of milliseconds between each pipe poll
- */
- static inline void Pipe_SetInterruptPeriod(uint8_t Milliseconds);
-
- /** Returns a mask indicating which pipe's interrupt periods have elapsed, indicating that the pipe should
- * be serviced.
- *
- * \return Mask whose bits indicate which pipes have interrupted
- */
- static inline uint8_t Pipe_GetPipeInterrupts(void);
-
- /** Determines if the specified pipe number has interrupted (valid only for INTERRUPT type
- * pipes).
- *
- * \param[in] PipeNumber Index of the pipe whose interrupt flag should be tested
- *
- * \return Boolean true if the specified pipe has interrupted, false otherwise
- */
- static inline bool Pipe_HasPipeInterrupted(uint8_t PipeNumber);
-
- /** Unfreezes the selected pipe, allowing it to communicate with an attached device. */
- static inline void Pipe_Unfreeze(void);
-
- /** Freezes the selected pipe, preventing it from communicating with an attached device. */
- static inline void Pipe_Freeze(void);
-
- /** Determines if the currently selected pipe is frozen, and not able to accept data.
- *
- * \return Boolean true if the currently selected pipe is frozen, false otherwise
- */
- static inline bool Pipe_IsFrozen(void);
-
- /** Clears the master pipe error flag. */
- static inline void Pipe_ClearError(void);
-
- /** Determines if the master pipe error flag is set for the currently selected pipe, indicating that
- * some sort of hardware error has occurred on the pipe.
- *
- * \see \ref Pipe_GetErrorFlags() macro for information on retrieving the exact error flag.
- *
- * \return Boolean true if an error has occurred on the selected pipe, false otherwise
- */
- static inline bool Pipe_IsError(void);
-
- /** Clears all the currently selected pipe's hardware error flags, but does not clear the master error
- * flag for the pipe.
- */
- static inline void Pipe_ClearErrorFlags(void);
-
- /** Gets a mask of the hardware error flags which have occurred on the currently selected pipe. This
- * value can then be masked against the PIPE_ERRORFLAG_* masks to determine what error has occurred.
- *
- * \return Mask comprising of PIPE_ERRORFLAG_* bits indicating what error has occurred on the selected pipe
- */
- static inline uint8_t Pipe_GetErrorFlags(void);
-
- /** Determines if the currently selected pipe may be read from (if data is waiting in the pipe
- * bank and the pipe is an IN direction, or if the bank is not yet full if the pipe is an OUT
- * direction). This function will return false if an error has occurred in the pipe, or if the pipe
- * is an IN direction and no packet (or an empty packet) has been received, or if the pipe is an OUT
- * direction and the pipe bank is full.
- *
- * \note This function is not valid on CONTROL type pipes.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if the currently selected pipe may be read from or written to, depending on its direction
- */
- static inline bool Pipe_IsReadWriteAllowed(void);
-
- /** Determines if an IN request has been received on the currently selected pipe.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if the current pipe has received an IN packet, false otherwise.
- */
- static inline bool Pipe_IsINReceived(void);
-
- /** Determines if the currently selected pipe is ready to send an OUT request.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if the current pipe is ready for an OUT packet, false otherwise.
- */
- static inline bool Pipe_IsOUTReady(void);
-
- /** Determines if no SETUP request is currently being sent to the attached device on the selected
- * CONTROL type pipe.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if the current pipe is ready for a SETUP packet, false otherwise.
- */
- static inline bool Pipe_IsSETUPSent(void);
-
- /** Sends the currently selected CONTROL type pipe's contents to the device as a SETUP packet.
- *
- * \ingroup Group_PipePacketManagement
- */
- static inline void Pipe_ClearSETUP(void);
-
- /** Acknowledges the reception of a setup IN request from the attached device on the currently selected
- * pipe, freeing the bank ready for the next packet.
- *
- * \ingroup Group_PipePacketManagement
- */
- static inline void Pipe_ClearIN(void);
-
- /** Sends the currently selected pipe's contents to the device as an OUT packet on the selected pipe, freeing
- * the bank ready for the next packet.
- *
- * \ingroup Group_PipePacketManagement
- */
- static inline void Pipe_ClearOUT(void);
-
- /** Determines if the device sent a NAK (Negative Acknowledge) in response to the last sent packet on
- * the currently selected pipe. This occurs when the host sends a packet to the device, but the device
- * is not currently ready to handle the packet (i.e. its endpoint banks are full). Once a NAK has been
- * received, it must be cleared using \ref Pipe_ClearNAKReceived() before the previous (or any other) packet
- * can be re-sent.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if an NAK has been received on the current pipe, false otherwise
- */
- static inline bool Pipe_IsNAKReceived(void);
-
- /** Clears the NAK condition on the currently selected pipe.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \see \ref Pipe_IsNAKReceived() for more details.
- */
- static inline void Pipe_ClearNAKReceived(void);
-
- /** Determines if the currently selected pipe has had the STALL condition set by the attached device.
- *
- * \ingroup Group_PipePacketManagement
- *
- * \return Boolean true if the current pipe has been stalled by the attached device, false otherwise
- */
- static inline bool Pipe_IsStalled(void);
-
- /** Clears the STALL condition detection flag on the currently selected pipe, but does not clear the
- * STALL condition itself (this must be done via a ClearFeature control request to the device).
- *
- * \ingroup Group_PipePacketManagement
- */
- static inline void Pipe_ClearStall(void);
- #else
- #define Pipe_BytesInPipe() UPBCX
-
- #define Pipe_GetCurrentPipe() (UPNUM & PIPE_PIPENUM_MASK)
-
- #define Pipe_SelectPipe(pipenum) MACROS{ UPNUM = (pipenum); }MACROE
-
- #define Pipe_ResetPipe(pipenum) MACROS{ UPRST = (1 << (pipenum)); UPRST = 0; }MACROE
-
- #define Pipe_EnablePipe() MACROS{ UPCONX |= (1 << PEN); }MACROE
-
- #define Pipe_DisablePipe() MACROS{ UPCONX &= ~(1 << PEN); }MACROE
-
- #define Pipe_IsEnabled() ((UPCONX & (1 << PEN)) ? true : false)
-
- #define Pipe_GetPipeToken() (UPCFG0X & PIPE_TOKEN_MASK)
-
- #define Pipe_SetPipeToken(token) MACROS{ UPCFG0X = ((UPCFG0X & ~PIPE_TOKEN_MASK) | (token)); }MACROE
-
- #define Pipe_SetInfiniteINRequests() MACROS{ UPCONX |= (1 << INMODE); }MACROE
-
- #define Pipe_SetFiniteINRequests(n) MACROS{ UPCONX &= ~(1 << INMODE); UPINRQX = (n); }MACROE
-
- #define Pipe_IsConfigured() ((UPSTAX & (1 << CFGOK)) ? true : false)
-
- #define Pipe_BoundEndpointNumber() ((UPCFG0X >> PEPNUM0) & PIPE_EPNUM_MASK)
-
- #define Pipe_SetInterruptPeriod(ms) MACROS{ UPCFG2X = (ms); }MACROE
-
- #define Pipe_GetPipeInterrupts() UPINT
-
- #define Pipe_HasPipeInterrupted(n) ((UPINT & (1 << (n))) ? true : false)
-
- #define Pipe_Unfreeze() MACROS{ UPCONX &= ~(1 << PFREEZE); }MACROE
-
- #define Pipe_Freeze() MACROS{ UPCONX |= (1 << PFREEZE); }MACROE
-
- #define Pipe_IsFrozen() ((UPCONX & (1 << PFREEZE)) ? true : false)
-
- #define Pipe_ClearError() MACROS{ UPINTX &= ~(1 << PERRI); }MACROE
-
- #define Pipe_IsError() ((UPINTX & (1 << PERRI)) ? true : false)
-
- #define Pipe_ClearErrorFlags() MACROS{ UPERRX = 0; }MACROE
-
- #define Pipe_GetErrorFlags() ((UPERRX & (PIPE_ERRORFLAG_CRC16 | PIPE_ERRORFLAG_TIMEOUT | \
- PIPE_ERRORFLAG_PID | PIPE_ERRORFLAG_DATAPID | \
- PIPE_ERRORFLAG_DATATGL)) | \
- (UPSTAX & PIPE_ERRORFLAG_OVERFLOW | PIPE_ERRORFLAG_UNDERFLOW))
-
- #define Pipe_IsReadWriteAllowed() ((UPINTX & (1 << RWAL)) ? true : false)
-
- #define Pipe_IsINReceived() ((UPINTX & (1 << RXINI)) ? true : false)
-
- #define Pipe_IsOUTReady() ((UPINTX & (1 << TXOUTI)) ? true : false)
-
- #define Pipe_IsSETUPSent() ((UPINTX & (1 << TXSTPI)) ? true : false)
-
- #define Pipe_ClearIN() MACROS{ UPINTX &= ~((1 << RXINI) | (1 << FIFOCON)); }MACROE
-
- #define Pipe_ClearOUT() MACROS{ UPINTX &= ~((1 << TXOUTI) | (1 << FIFOCON)); }MACROE
-
- #define Pipe_ClearSETUP() MACROS{ UPINTX &= ~((1 << TXSTPI) | (1 << FIFOCON)); }MACROE
-
- #define Pipe_IsNAKReceived() ((UPINTX & (1 << NAKEDI)) ? true : false)
-
- #define Pipe_ClearNAKReceived() MACROS{ UPINTX &= ~(1 << NAKEDI); }MACROE
-
- #define Pipe_IsStalled() ((UPINTX & (1 << RXSTALLI)) ? true : false)
-
- #define Pipe_ClearStall() MACROS{ UPINTX &= ~(1 << RXSTALLI); }MACROE
- #endif
-
/* Enums: */
- /** Enum for the possible error return codes of the Pipe_WaitUntilReady function
+ /** Enum for the possible error return codes of the Pipe_WaitUntilReady function.
*
* \ingroup Group_PipeRW
*/
enum Pipe_WaitUntilReady_ErrorCodes_t
{
- PIPE_READYWAIT_NoError = 0, /**< Pipe ready for next packet, no error */
+ PIPE_READYWAIT_NoError = 0, /**< Pipe ready for next packet, no error. */
PIPE_READYWAIT_PipeStalled = 1, /**< The device stalled the pipe while waiting. */
PIPE_READYWAIT_DeviceDisconnected = 2, /**< Device was disconnected from the host while waiting. */
PIPE_READYWAIT_Timeout = 3, /**< The device failed to accept or send the next packet
*/
};
- /** Enum for the possible error return codes of the Pipe_*_Stream_* functions.
+ /* Inline Functions: */
+ /** Indicates the number of bytes currently stored in the current pipes's selected bank.
+ *
+ * \note The return width of this function may differ, depending on the maximum pipe bank size
+ * of the selected AVR model.
*
* \ingroup Group_PipeRW
+ *
+ * \return Total number of bytes in the currently selected Pipe's FIFO buffer.
*/
- enum Pipe_Stream_RW_ErrorCodes_t
+ static inline uint16_t Pipe_BytesInPipe(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint16_t Pipe_BytesInPipe(void)
{
- PIPE_RWSTREAM_NoError = 0, /**< Command completed successfully, no error. */
- PIPE_RWSTREAM_PipeStalled = 1, /**< The device stalled the pipe during the transfer. */
- PIPE_RWSTREAM_DeviceDisconnected = 2, /**< Device was disconnected from the host during
- * the transfer.
- */
- PIPE_RWSTREAM_Timeout = 3, /**< The device failed to accept or send the next packet
- * within the software timeout period set by the
- * \ref USB_STREAM_TIMEOUT_MS macro.
- */
- PIPE_RWSTREAM_CallbackAborted = 4, /**< Indicates that the stream's callback function aborted
- * the transfer early.
- */
- };
+ return UPBCX;
+ }
+
+ /** Returns the pipe address of the currently selected pipe. This is typically used to save the
+ * currently selected pipe number so that it can be restored after another pipe has been manipulated.
+ *
+ * \return Index of the currently selected pipe.
+ */
+ static inline uint8_t Pipe_GetCurrentPipe(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_GetCurrentPipe(void)
+ {
+ return (UPNUM & PIPE_PIPENUM_MASK);
+ }
+
+ /** Selects the given pipe number. Any pipe operations which do not require the pipe number to be
+ * indicated will operate on the currently selected pipe.
+ *
+ * \param[in] PipeNumber Index of the pipe to select.
+ */
+ static inline void Pipe_SelectPipe(const uint8_t PipeNumber) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_SelectPipe(const uint8_t PipeNumber)
+ {
+ UPNUM = PipeNumber;
+ }
+
+ /** Resets the desired pipe, including the pipe banks and flags.
+ *
+ * \param[in] PipeNumber Index of the pipe to reset.
+ */
+ static inline void Pipe_ResetPipe(const uint8_t PipeNumber) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ResetPipe(const uint8_t PipeNumber)
+ {
+ UPRST = (1 << PipeNumber);
+ UPRST = 0;
+ }
+
+ /** Enables the currently selected pipe so that data can be sent and received through it to and from
+ * an attached device.
+ *
+ * \pre The currently selected pipe must first be configured properly via \ref Pipe_ConfigurePipe().
+ */
+ static inline void Pipe_EnablePipe(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_EnablePipe(void)
+ {
+ UPCONX |= (1 << PEN);
+ }
+
+ /** Disables the currently selected pipe so that data cannot be sent and received through it to and
+ * from an attached device.
+ */
+ static inline void Pipe_DisablePipe(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_DisablePipe(void)
+ {
+ UPCONX &= ~(1 << PEN);
+ }
+
+ /** Determines if the currently selected pipe is enabled, but not necessarily configured.
+ *
+ * \return Boolean True if the currently selected pipe is enabled, false otherwise.
+ */
+ static inline bool Pipe_IsEnabled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsEnabled(void)
+ {
+ return ((UPCONX & (1 << PEN)) ? true : false);
+ }
+
+ /** Gets the current pipe token, indicating the pipe's data direction and type.
+ *
+ * \return The current pipe token, as a PIPE_TOKEN_* mask.
+ */
+ static inline uint8_t Pipe_GetPipeToken(void) ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_GetPipeToken(void)
+ {
+ return (UPCFG0X & (0x03 << PTOKEN0));
+ }
+
+ /** Sets the token for the currently selected pipe to one of the tokens specified by the PIPE_TOKEN_*
+ * masks. This can be used on CONTROL type pipes, to allow for bidirectional transfer of data during
+ * control requests, or on regular pipes to allow for half-duplex bidirectional data transfer to devices
+ * which have two endpoints of opposite direction sharing the same endpoint address within the device.
+ *
+ * \param[in] Token New pipe token to set the selected pipe to, as a PIPE_TOKEN_* mask.
+ */
+ static inline void Pipe_SetPipeToken(const uint8_t Token) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_SetPipeToken(const uint8_t Token)
+ {
+ UPCFG0X = ((UPCFG0X & ~(0x03 << PTOKEN0)) | Token);
+ }
+
+ /** Configures the currently selected pipe to allow for an unlimited number of IN requests. */
+ static inline void Pipe_SetInfiniteINRequests(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_SetInfiniteINRequests(void)
+ {
+ UPCONX |= (1 << INMODE);
+ }
+
+ /** Configures the currently selected pipe to only allow the specified number of IN requests to be
+ * accepted by the pipe before it is automatically frozen.
+ *
+ * \param[in] TotalINRequests Total number of IN requests that the pipe may receive before freezing.
+ */
+ static inline void Pipe_SetFiniteINRequests(const uint8_t TotalINRequests) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_SetFiniteINRequests(const uint8_t TotalINRequests)
+ {
+ UPCONX &= ~(1 << INMODE);
+ UPINRQX = TotalINRequests;
+ }
+
+ /** Determines if the currently selected pipe is configured.
+ *
+ * \return Boolean true if the selected pipe is configured, false otherwise.
+ */
+ static inline bool Pipe_IsConfigured(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsConfigured(void)
+ {
+ return ((UPSTAX & (1 << CFGOK)) ? true : false);
+ }
+
+ /** Retrieves the endpoint number of the endpoint within the attached device that the currently selected
+ * pipe is bound to.
+ *
+ * \return Endpoint number the currently selected pipe is bound to.
+ */
+ static inline uint8_t Pipe_BoundEndpointNumber(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_BoundEndpointNumber(void)
+ {
+ return ((UPCFG0X >> PEPNUM0) & PIPE_EPNUM_MASK);
+ }
+
+ /** Sets the period between interrupts for an INTERRUPT type pipe to a specified number of milliseconds.
+ *
+ * \param[in] Milliseconds Number of milliseconds between each pipe poll.
+ */
+ static inline void Pipe_SetInterruptPeriod(const uint8_t Milliseconds) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_SetInterruptPeriod(const uint8_t Milliseconds)
+ {
+ UPCFG2X = Milliseconds;
+ }
+
+ /** Returns a mask indicating which pipe's interrupt periods have elapsed, indicating that the pipe should
+ * be serviced.
+ *
+ * \return Mask whose bits indicate which pipes have interrupted.
+ */
+ static inline uint8_t Pipe_GetPipeInterrupts(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_GetPipeInterrupts(void)
+ {
+ return UPINT;
+ }
+
+ /** Determines if the specified pipe number has interrupted (valid only for INTERRUPT type
+ * pipes).
+ *
+ * \param[in] PipeNumber Index of the pipe whose interrupt flag should be tested.
+ *
+ * \return Boolean true if the specified pipe has interrupted, false otherwise.
+ */
+ static inline bool Pipe_HasPipeInterrupted(const uint8_t PipeNumber) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_HasPipeInterrupted(const uint8_t PipeNumber)
+ {
+ return ((UPINT & (1 << PipeNumber)) ? true : false);
+ }
+
+ /** Unfreezes the selected pipe, allowing it to communicate with an attached device. */
+ static inline void Pipe_Unfreeze(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_Unfreeze(void)
+ {
+ UPCONX &= ~(1 << PFREEZE);
+ }
+
+ /** Freezes the selected pipe, preventing it from communicating with an attached device. */
+ static inline void Pipe_Freeze(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_Freeze(void)
+ {
+ UPCONX |= (1 << PFREEZE);
+ }
+
+ /** Determines if the currently selected pipe is frozen, and not able to accept data.
+ *
+ * \return Boolean true if the currently selected pipe is frozen, false otherwise.
+ */
+ static inline bool Pipe_IsFrozen(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsFrozen(void)
+ {
+ return ((UPCONX & (1 << PFREEZE)) ? true : false);
+ }
+
+ /** Clears the master pipe error flag. */
+ static inline void Pipe_ClearError(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearError(void)
+ {
+ UPINTX &= ~(1 << PERRI);
+ }
+
+ /** Determines if the master pipe error flag is set for the currently selected pipe, indicating that
+ * some sort of hardware error has occurred on the pipe.
+ *
+ * \see \ref Pipe_GetErrorFlags() macro for information on retrieving the exact error flag.
+ *
+ * \return Boolean true if an error has occurred on the selected pipe, false otherwise.
+ */
+ static inline bool Pipe_IsError(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsError(void)
+ {
+ return ((UPINTX & (1 << PERRI)) ? true : false);
+ }
+
+ /** Clears all the currently selected pipe's hardware error flags, but does not clear the master error
+ * flag for the pipe.
+ */
+ static inline void Pipe_ClearErrorFlags(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearErrorFlags(void)
+ {
+ UPERRX = 0;
+ }
+
+ /** Gets a mask of the hardware error flags which have occurred on the currently selected pipe. This
+ * value can then be masked against the PIPE_ERRORFLAG_* masks to determine what error has occurred.
+ *
+ * \return Mask comprising of PIPE_ERRORFLAG_* bits indicating what error has occurred on the selected pipe.
+ */
+ static inline uint8_t Pipe_GetErrorFlags(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_GetErrorFlags(void)
+ {
+ return ((UPERRX & (PIPE_ERRORFLAG_CRC16 | PIPE_ERRORFLAG_TIMEOUT |
+ PIPE_ERRORFLAG_PID | PIPE_ERRORFLAG_DATAPID |
+ PIPE_ERRORFLAG_DATATGL)) |
+ (UPSTAX & (PIPE_ERRORFLAG_OVERFLOW | PIPE_ERRORFLAG_UNDERFLOW)));
+ }
+
+ /** Determines if the currently selected pipe may be read from (if data is waiting in the pipe
+ * bank and the pipe is an IN direction, or if the bank is not yet full if the pipe is an OUT
+ * direction). This function will return false if an error has occurred in the pipe, or if the pipe
+ * is an IN direction and no packet (or an empty packet) has been received, or if the pipe is an OUT
+ * direction and the pipe bank is full.
+ *
+ * \note This function is not valid on CONTROL type pipes.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if the currently selected pipe may be read from or written to, depending on its direction.
+ */
+ static inline bool Pipe_IsReadWriteAllowed(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsReadWriteAllowed(void)
+ {
+ return ((UPINTX & (1 << RWAL)) ? true : false);
+ }
+
+ /** Determines if an IN request has been received on the currently selected pipe.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if the current pipe has received an IN packet, false otherwise.
+ */
+ static inline bool Pipe_IsINReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsINReceived(void)
+ {
+ return ((UPINTX & (1 << RXINI)) ? true : false);
+ }
+
+ /** Determines if the currently selected pipe is ready to send an OUT request.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if the current pipe is ready for an OUT packet, false otherwise.
+ */
+ static inline bool Pipe_IsOUTReady(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsOUTReady(void)
+ {
+ return ((UPINTX & (1 << TXOUTI)) ? true : false);
+ }
+
+ /** Determines if no SETUP request is currently being sent to the attached device on the selected
+ * CONTROL type pipe.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if the current pipe is ready for a SETUP packet, false otherwise.
+ */
+ static inline bool Pipe_IsSETUPSent(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsSETUPSent(void)
+ {
+ return ((UPINTX & (1 << TXSTPI)) ? true : false);
+ }
+
+ /** Sends the currently selected CONTROL type pipe's contents to the device as a SETUP packet.
+ *
+ * \ingroup Group_PipePacketManagement
+ */
+ static inline void Pipe_ClearSETUP(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearSETUP(void)
+ {
+ UPINTX &= ~((1 << TXSTPI) | (1 << FIFOCON));
+ }
+
+ /** Acknowledges the reception of a setup IN request from the attached device on the currently selected
+ * pipe, freeing the bank ready for the next packet.
+ *
+ * \ingroup Group_PipePacketManagement
+ */
+ static inline void Pipe_ClearIN(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearIN(void)
+ {
+ UPINTX &= ~((1 << RXINI) | (1 << FIFOCON));
+ }
+
+ /** Sends the currently selected pipe's contents to the device as an OUT packet on the selected pipe, freeing
+ * the bank ready for the next packet.
+ *
+ * \ingroup Group_PipePacketManagement
+ */
+ static inline void Pipe_ClearOUT(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearOUT(void)
+ {
+ UPINTX &= ~((1 << TXOUTI) | (1 << FIFOCON));
+ }
+
+ /** Determines if the device sent a NAK (Negative Acknowledge) in response to the last sent packet on
+ * the currently selected pipe. This occurs when the host sends a packet to the device, but the device
+ * is not currently ready to handle the packet (i.e. its endpoint banks are full). Once a NAK has been
+ * received, it must be cleared using \ref Pipe_ClearNAKReceived() before the previous (or any other) packet
+ * can be re-sent.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if an NAK has been received on the current pipe, false otherwise.
+ */
+ static inline bool Pipe_IsNAKReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsNAKReceived(void)
+ {
+ return ((UPINTX & (1 << NAKEDI)) ? true : false);
+ }
+
+ /** Clears the NAK condition on the currently selected pipe.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \see \ref Pipe_IsNAKReceived() for more details.
+ */
+ static inline void Pipe_ClearNAKReceived(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearNAKReceived(void)
+ {
+ UPINTX &= ~(1 << NAKEDI);
+ }
+
+ /** Determines if the currently selected pipe has had the STALL condition set by the attached device.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Boolean true if the current pipe has been stalled by the attached device, false otherwise.
+ */
+ static inline bool Pipe_IsStalled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+ static inline bool Pipe_IsStalled(void)
+ {
+ return ((UPINTX & (1 << RXSTALLI)) ? true : false);
+ }
+
+ /** Clears the STALL condition detection flag on the currently selected pipe, but does not clear the
+ * STALL condition itself (this must be done via a ClearFeature control request to the device).
+ *
+ * \ingroup Group_PipePacketManagement
+ */
+ static inline void Pipe_ClearStall(void) ATTR_ALWAYS_INLINE;
+ static inline void Pipe_ClearStall(void)
+ {
+ UPINTX &= ~(1 << RXSTALLI);
+ }
- /* Inline Functions: */
/** Reads one byte from the currently selected pipe's bank, for OUT direction pipes.
*
* \ingroup Group_PipePrimitiveRW
*
- * \return Next byte in the currently selected pipe's FIFO buffer
+ * \return Next byte in the currently selected pipe's FIFO buffer.
*/
static inline uint8_t Pipe_Read_Byte(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint8_t Pipe_Read_Byte(void)
*
* \ingroup Group_PipePrimitiveRW
*
- * \param[in] Byte Next byte to write into the the currently selected pipe's FIFO buffer
+ * \param[in] Byte Next byte to write into the the currently selected pipe's FIFO buffer.
*/
static inline void Pipe_Write_Byte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
static inline void Pipe_Write_Byte(const uint8_t Byte)
*
* \ingroup Group_PipePrimitiveRW
*
- * \return Next word in the currently selected pipe's FIFO buffer
+ * \return Next word in the currently selected pipe's FIFO buffer.
*/
static inline uint16_t Pipe_Read_Word_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint16_t Pipe_Read_Word_LE(void)
*
* \ingroup Group_PipePrimitiveRW
*
- * \return Next word in the currently selected pipe's FIFO buffer
+ * \return Next word in the currently selected pipe's FIFO buffer.
*/
static inline uint16_t Pipe_Read_Word_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint16_t Pipe_Read_Word_BE(void)
*
* \ingroup Group_PipePrimitiveRW
*
- * \param[in] Word Next word to write to the currently selected pipe's FIFO buffer
+ * \param[in] Word Next word to write to the currently selected pipe's FIFO buffer.
*/
static inline void Pipe_Write_Word_LE(const uint16_t Word) ATTR_ALWAYS_INLINE;
static inline void Pipe_Write_Word_LE(const uint16_t Word)
*
* \ingroup Group_PipePrimitiveRW
*
- * \param[in] Word Next word to write to the currently selected pipe's FIFO buffer
+ * \param[in] Word Next word to write to the currently selected pipe's FIFO buffer.
*/
static inline void Pipe_Write_Word_BE(const uint16_t Word) ATTR_ALWAYS_INLINE;
static inline void Pipe_Write_Word_BE(const uint16_t Word)
*
* \ingroup Group_PipePrimitiveRW
*
- * \return Next double word in the currently selected pipe's FIFO buffer
+ * \return Next double word in the currently selected pipe's FIFO buffer.
*/
static inline uint32_t Pipe_Read_DWord_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint32_t Pipe_Read_DWord_LE(void)
*
* \ingroup Group_PipePrimitiveRW
*
- * \return Next double word in the currently selected pipe's FIFO buffer
+ * \return Next double word in the currently selected pipe's FIFO buffer.
*/
static inline uint32_t Pipe_Read_DWord_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint32_t Pipe_Read_DWord_BE(void)
*
* \ingroup Group_PipePrimitiveRW
*
- * \param[in] DWord Next double word to write to the currently selected pipe's FIFO buffer
+ * \param[in] DWord Next double word to write to the currently selected pipe's FIFO buffer.
*/
static inline void Pipe_Write_DWord_LE(const uint32_t DWord) ATTR_ALWAYS_INLINE;
static inline void Pipe_Write_DWord_LE(const uint32_t DWord)
*
* \ingroup Group_PipePrimitiveRW
*
- * \param[in] DWord Next double word to write to the currently selected pipe's FIFO buffer
+ * \param[in] DWord Next double word to write to the currently selected pipe's FIFO buffer.
*/
static inline void Pipe_Write_DWord_BE(const uint32_t DWord) ATTR_ALWAYS_INLINE;
static inline void Pipe_Write_DWord_BE(const uint32_t DWord)
extern uint8_t USB_ControlPipeSize;
/* Function Prototypes: */
- #if !defined(NO_STREAM_CALLBACKS) || defined(__DOXYGEN__)
- #define __CALLBACK_PARAM , StreamCallbackPtr_t Callback
- #else
- #define __CALLBACK_PARAM
- #endif
-
/** Configures the specified pipe number with the given pipe type, token, target endpoint number in the
- * attached device, bank size and banking mode. Pipes should be allocated in ascending order by their
- * address in the device (i.e. pipe 1 should be configured before pipe 2 and so on) to prevent fragmentation
- * of the USB FIFO memory.
- *
- * The pipe type may be one of the EP_TYPE_* macros listed in LowLevel.h, the token may be one of the
- * PIPE_TOKEN_* masks.
- *
- * The bank size must indicate the maximum packet size that the pipe can handle. Different pipe
- * numbers can handle different maximum packet sizes - refer to the chosen USB AVR's datasheet to
- * determine the maximum bank size for each pipe.
- *
- * The banking mode may be either \ref PIPE_BANK_SINGLE or \ref PIPE_BANK_DOUBLE.
+ * attached device, bank size and banking mode.
*
* A newly configured pipe is frozen by default, and must be unfrozen before use via the \ref Pipe_Unfreeze()
* before being used. Pipes should be kept frozen unless waiting for data from a device while in IN mode, or
* numbers of IN requests without automatic freezing - this can be overridden by a call to
* \ref Pipe_SetFiniteINRequests().
*
- * \note The default control pipe does not have to be manually configured, as it is automatically
- * configured by the library internally.
+ * \param[in] Number Pipe number to configure. This must be more than 0 and less than \ref PIPE_TOTAL_PIPES.
+ *
+ * \param[in] Type Type of pipe to configure, a EP_TYPE_* mask. Not all pipe types are available on Low
+ * Speed USB devices - refer to the USB 2.0 specification.
+ *
+ * \param[in] Token Pipe data token, either \ref PIPE_TOKEN_SETUP, \ref PIPE_TOKEN_OUT or \ref PIPE_TOKEN_IN.
+ * All pipes (except Control type) are unidirectional - data may only be read from or
+ * written to the pipe bank based on its direction, not both.
+ *
+ * \param[in] EndpointNumber Endpoint index within the attached device that the pipe should interface to.
+ *
+ * \param[in] Size Size of the pipe's bank, where packets are stored before they are transmitted to
+ * the USB device, or after they have been received from the USB device (depending on
+ * the pipe's data direction). The bank size must indicate the maximum packet size that
+ * the pipe can handle.
+ *
+ * \param[in] Banks Number of banks to use for the pipe being configured, a PIPE_BANK_* mask. More banks
+ * uses more USB DPRAM, but offers better performance. Isochronous type pipes <b>must</b>
+ * have at least two banks.
+ *
+ * \note Certain models of USB AVR's pipes may have different maximum packet sizes based on the pipe's
+ * index - refer to the chosen USB AVR's datasheet to determine the maximum bank size for each pipe.
+ * \n\n
+ *
+ * \note The default control pipe should not be manually configured by the user application, as it is
+ * automatically configured by the library internally.
* \n\n
*
- * \note This routine will select the specified pipe, and the pipe will remain selected once the
- * routine completes regardless of if the pipe configuration succeeds.
+ * \note This routine will automatically select the specified pipe upon success. Upon failure, the pipe which
+ * failed to reconfigure correctly will be selected.
*
- * \return Boolean true if the configuration is successful, false otherwise
+ * \return Boolean true if the configuration succeeded, false otherwise.
*/
- bool Pipe_ConfigurePipe(const uint8_t Number, const uint8_t Type, const uint8_t Token, const uint8_t EndpointNumber,
- const uint16_t Size, const uint8_t Banks);
+ bool Pipe_ConfigurePipe(const uint8_t Number,
+ const uint8_t Type,
+ const uint8_t Token,
+ const uint8_t EndpointNumber,
+ const uint16_t Size,
+ const uint8_t Banks);
/** Spin-loops until the currently selected non-control pipe is ready for the next packed of data to be read
* or written to it, aborting in the case of an error condition (such as a timeout or device disconnect).
/** Determines if a pipe has been bound to the given device endpoint address. If a pipe which is bound to the given
* endpoint is found, it is automatically selected.
*
- * \param[in] EndpointAddress Address and direction mask of the endpoint within the attached device to check
+ * \param[in] EndpointAddress Address and direction mask of the endpoint within the attached device to check.
*
* \return Boolean true if a pipe bound to the given endpoint address of the specified direction is found, false
- * otherwise
+ * otherwise.
*/
bool Pipe_IsEndpointBound(const uint8_t EndpointAddress);
-
- /** Reads and discards the given number of bytes from the pipe, 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 device via the \ref Pipe_ClearIN() 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.
- *
- * The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
- * having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Length Number of bytes to send via the currently selected pipe.
- * \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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Discard_Stream(uint16_t Length __CALLBACK_PARAM);
-
- /** Writes the given number of bytes to the pipe from the given buffer in little endian,
- * sending full packets to the device 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 Pipe_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.
- *
- * The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
- * having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Write_Stream_LE(const void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** EEPROM buffer source version of \ref Pipe_Write_Stream_LE().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Write_EStream_LE(const void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** FLASH buffer source version of \ref Pipe_Write_Stream_LE().
- *
- * \note The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_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 pipe from the given buffer in big endian,
- * sending full packets to the device 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 Pipe_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.
- *
- * The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
- * having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Write_Stream_BE(const void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** EEPROM buffer source version of \ref Pipe_Write_Stream_BE().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Write_EStream_BE(const void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** FLASH buffer source version of \ref Pipe_Write_Stream_BE().
- *
- * \note The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[in] Buffer Pointer to the source data buffer to read from.
- * \param[in] Length Number of bytes to read for the currently selected pipe 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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_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 pipe into the given buffer in little endian,
- * sending full packets to the device 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 Pipe_ClearIN() 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.
- *
- * The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
- * having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[out] Buffer Pointer to the source data buffer to write to.
- * \param[in] Length Number of bytes to read for the currently selected pipe to read from.
- * \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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Read_Stream_LE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** EEPROM buffer source version of \ref Pipe_Read_Stream_LE().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[out] Buffer Pointer to the source data buffer to write to.
- * \param[in] Length Number of bytes to read for the currently selected pipe to read from.
- * \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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Read_EStream_LE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** Reads the given number of bytes from the pipe into the given buffer in big endian,
- * sending full packets to the device 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 Pipe_ClearIN() 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.
- *
- * The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
- * having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[out] Buffer Pointer to the source data buffer to write to.
- * \param[in] Length Number of bytes to read for the currently selected pipe to read from.
- * \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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Read_Stream_BE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
-
- /** EEPROM buffer source version of \ref Pipe_Read_Stream_BE().
- *
- * \ingroup Group_PipeStreamRW
- *
- * \param[out] Buffer Pointer to the source data buffer to write to.
- * \param[in] Length Number of bytes to read for the currently selected pipe to read from.
- * \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 Pipe_Stream_RW_ErrorCodes_t enum.
- */
- uint8_t Pipe_Read_EStream_BE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Macros: */
- #define PIPE_TOKEN_MASK (0x03 << PTOKEN0)
-
#if !defined(ENDPOINT_CONTROLEP)
- #define ENDPOINT_CONTROLEP 0
+ #define ENDPOINT_CONTROLEP 0
#endif
- #define Pipe_AllocateMemory() MACROS{ UPCFG1X |= (1 << ALLOC); }MACROE
- #define Pipe_DeallocateMemory() MACROS{ UPCFG1X &= ~(1 << ALLOC); }MACROE
-
- /* Function Prototypes: */
- void Pipe_ClearPipes(void);
-
/* Inline Functions: */
- static inline uint8_t Pipe_BytesToEPSizeMask(uint16_t Bytes) ATTR_WARN_UNUSED_RESULT ATTR_CONST ATTR_ALWAYS_INLINE;
- static inline uint8_t Pipe_BytesToEPSizeMask(uint16_t Bytes)
+ static inline uint8_t Pipe_BytesToEPSizeMask(const uint16_t Bytes) ATTR_WARN_UNUSED_RESULT ATTR_CONST ATTR_ALWAYS_INLINE;
+ static inline uint8_t Pipe_BytesToEPSizeMask(const uint16_t Bytes)
{
- if (Bytes <= 8)
- return (0 << EPSIZE0);
- else if (Bytes <= 16)
- return (1 << EPSIZE0);
- else if (Bytes <= 32)
- return (2 << EPSIZE0);
- else if (Bytes <= 64)
- return (3 << EPSIZE0);
- else if (Bytes <= 128)
- return (4 << EPSIZE0);
- else
- return (5 << EPSIZE0);
+ uint8_t MaskVal = 0;
+ uint16_t CheckBytes = 8;
+
+ while ((CheckBytes < Bytes) && (CheckBytes < PIPE_MAX_SIZE))
+ {
+ MaskVal++;
+ CheckBytes <<= 1;
+ }
+
+ return (MaskVal << EPSIZE0);
}
+ /* Function Prototypes: */
+ void Pipe_ClearPipes(void);
#endif
/* Disable C linkage for C++ Compilers: */
projects / pub / USBasp.git / blobdiff