1046 lines
46 KiB
C
1046 lines
46 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \ingroup Group_USB
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* @defgroup Group_PipeManagement Pipe Management
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*
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* This module contains functions, macros and enums related to pipe management when in USB Host mode. This
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* module contains the pipe management macros, as well as pipe interrupt and data send/receive functions
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* for various data types.
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*
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* @{
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*/
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/** @defgroup Group_PipeRW Pipe Data Reading and Writing
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*
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* Functions, macros, variables, enums and types related to data reading and writing from and to pipes.
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*/
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/** \ingroup Group_PipeRW
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* @defgroup Group_PipePrimitiveRW Read/Write of Primitive Data Types
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*
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* Functions, macros, variables, enums and types related to data reading and writing of primitive data types
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* from and to pipes.
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*/
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/** \ingroup Group_PipeRW
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* @defgroup Group_PipeStreamRW Read/Write of Multi-Byte Streams
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*
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* Functions, macros, variables, enums and types related to data reading and writing of data streams from
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* and to pipes.
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*/
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/** @defgroup Group_PipePacketManagement Pipe Packet Management
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*
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* Functions, macros, variables, enums and types related to packet management of pipes.
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*/
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/** @defgroup Group_PipeControlReq Pipe Control Request Management
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*
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* Module for host mode request processing. This module allows for the transmission of standard, class and
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* vendor control requests to the default control endpoint of an attached device while in host mode.
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*
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* \see Chapter 9 of the USB 2.0 specification.
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*/
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#ifndef __PIPE_H__
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#define __PIPE_H__
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/* Includes: */
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/eeprom.h>
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#include <stdbool.h>
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#include "../../../Common/Common.h"
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#include "../HighLevel/USBTask.h"
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#if !defined(NO_STREAM_CALLBACKS) || defined(__DOXYGEN__)
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#include "../HighLevel/StreamCallbacks.h"
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#endif
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that an overflow error occurred in the pipe on the received data. */
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#define PIPE_ERRORFLAG_OVERFLOW (1 << 6)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that an underflow error occurred in the pipe on the received data. */
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#define PIPE_ERRORFLAG_UNDERFLOW (1 << 5)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that a CRC error occurred in the pipe on the received data. */
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#define PIPE_ERRORFLAG_CRC16 (1 << 4)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that a hardware timeout error occurred in the pipe. */
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#define PIPE_ERRORFLAG_TIMEOUT (1 << 3)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that a hardware PID error occurred in the pipe. */
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#define PIPE_ERRORFLAG_PID (1 << 2)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that a hardware data PID error occurred in the pipe. */
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#define PIPE_ERRORFLAG_DATAPID (1 << 1)
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/** Mask for \ref Pipe_GetErrorFlags(), indicating that a hardware data toggle error occurred in the pipe. */
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#define PIPE_ERRORFLAG_DATATGL (1 << 0)
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/** Token mask for \ref Pipe_ConfigurePipe(). This sets the pipe as a SETUP token (for CONTROL type pipes),
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* which will trigger a control request on the attached device when data is written to the pipe.
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*/
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#define PIPE_TOKEN_SETUP (0 << PTOKEN0)
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/** Token mask for \ref Pipe_ConfigurePipe(). This sets the pipe as a IN token (for non-CONTROL type pipes),
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* indicating that the pipe data will flow from device to host.
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*/
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#define PIPE_TOKEN_IN (1 << PTOKEN0)
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/** Token mask for \ref Pipe_ConfigurePipe(). This sets the pipe as a OUT token (for non-CONTROL type pipes),
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* indicating that the pipe data will flow from host to device.
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*/
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#define PIPE_TOKEN_OUT (2 << PTOKEN0)
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/** Mask for the bank mode selection for the \ref Pipe_ConfigurePipe() macro. This indicates that the pipe
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* should have one single bank, which requires less USB FIFO memory but results in slower transfers as
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* only one USB device (the AVR or the attached device) can access the pipe's bank at the one time.
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*/
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#define PIPE_BANK_SINGLE (0 << EPBK0)
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/** Mask for the bank mode selection for the \ref Pipe_ConfigurePipe() macro. This indicates that the pipe
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* should have two banks, which requires more USB FIFO memory but results in faster transfers as one
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* USB device (the AVR or the attached device) can access one bank while the other accesses the second
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* bank.
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*/
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#define PIPE_BANK_DOUBLE (1 << EPBK0)
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/** Pipe address for the default control pipe, which always resides in address 0. This is
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* defined for convenience to give more readable code when used with the pipe macros.
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*/
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#define PIPE_CONTROLPIPE 0
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/** Default size of the default control pipe's bank, until altered by the Endpoint0Size value
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* in the device descriptor of the attached device.
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*/
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#define PIPE_CONTROLPIPE_DEFAULT_SIZE 64
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/** Pipe number mask, for masking against pipe addresses to retrieve the pipe's numerical address
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* in the device.
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*/
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#define PIPE_PIPENUM_MASK 0x07
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/** Total number of pipes (including the default control pipe at address 0) which may be used in
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* the device. Different USB AVR models support different amounts of pipes, this value reflects
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* the maximum number of pipes for the currently selected AVR model.
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*/
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#define PIPE_TOTAL_PIPES 7
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/** Size in bytes of the largest pipe bank size possible in the device. Not all banks on each AVR
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* model supports the largest bank size possible on the device; different pipe numbers support
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* different maximum bank sizes. This value reflects the largest possible bank of any pipe on the
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* currently selected USB AVR model.
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*/
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#define PIPE_MAX_SIZE 256
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/** Endpoint number mask, for masking against endpoint addresses to retrieve the endpoint's
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* numerical address in the attached device.
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*/
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#define PIPE_EPNUM_MASK 0x0F
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/* Pseudo-Function Macros: */
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#if defined(__DOXYGEN__)
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/** Indicates the number of bytes currently stored in the current pipes's selected bank.
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*
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* \note The return width of this function may differ, depending on the maximum pipe bank size
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* of the selected AVR model.
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*
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* \ingroup Group_PipeRW
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*
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* \return Total number of bytes in the currently selected Pipe's FIFO buffer
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*/
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static inline uint16_t Pipe_BytesInPipe(void);
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/** Returns the pipe address of the currently selected pipe. This is typically used to save the
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* currently selected pipe number so that it can be restored after another pipe has been manipulated.
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*
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* \return Index of the currently selected pipe
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*/
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static inline uint8_t Pipe_GetCurrentPipe(void);
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/** Selects the given pipe number. Any pipe operations which do not require the pipe number to be
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* indicated will operate on the currently selected pipe.
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*
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* \param[in] PipeNumber Index of the pipe to select
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*/
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static inline void Pipe_SelectPipe(uint8_t PipeNumber);
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/** Resets the desired pipe, including the pipe banks and flags.
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*
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* \param[in] PipeNumber Index of the pipe to reset
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*/
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static inline void Pipe_ResetPipe(uint8_t PipeNumber);
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/** Enables the currently selected pipe so that data can be sent and received through it to and from
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* an attached device.
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*
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* \note Pipes must first be configured properly via \ref Pipe_ConfigurePipe().
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*/
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static inline void Pipe_EnablePipe(void);
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/** Disables the currently selected pipe so that data cannot be sent and received through it to and
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* from an attached device.
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*/
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static inline void Pipe_DisablePipe(void);
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/** Determines if the currently selected pipe is enabled, but not necessarily configured.
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*
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* \return Boolean True if the currently selected pipe is enabled, false otherwise
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*/
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static inline bool Pipe_IsEnabled(void);
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/** Gets the current pipe token, indicating the pipe's data direction and type.
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*
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* \return The current pipe token, as a PIPE_TOKEN_* mask
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*/
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static inline uint8_t Pipe_GetPipeToken(void);
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/** Sets the token for the currently selected pipe to one of the tokens specified by the PIPE_TOKEN_*
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* masks. This can be used on CONTROL type pipes, to allow for bidirectional transfer of data during
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* control requests, or on regular pipes to allow for half-duplex bidirectional data transfer to devices
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* which have two endpoints of opposite direction sharing the same endpoint address within the device.
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*
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* \param[in] Token New pipe token to set the selected pipe to, as a PIPE_TOKEN_* mask
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*/
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static inline void Pipe_SetPipeToken(uint8_t Token);
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/** Configures the currently selected pipe to allow for an unlimited number of IN requests. */
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static inline void Pipe_SetInfiniteINRequests(void);
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/** Configures the currently selected pipe to only allow the specified number of IN requests to be
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* accepted by the pipe before it is automatically frozen.
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*
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* \param[in] TotalINRequests Total number of IN requests that the pipe may receive before freezing
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*/
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static inline void Pipe_SetFiniteINRequests(uint8_t TotalINRequests);
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/** Determines if the currently selected pipe is configured.
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*
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* \return Boolean true if the selected pipe is configured, false otherwise
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*/
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static inline bool Pipe_IsConfigured(void);
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/** Retrieves the endpoint number of the endpoint within the attached device that the currently selected
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* pipe is bound to.
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*
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* \return Endpoint number the currently selected pipe is bound to
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*/
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static inline uint8_t Pipe_BoundEndpointNumber(void);
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/** Sets the period between interrupts for an INTERRUPT type pipe to a specified number of milliseconds.
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*
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* \param[in] Milliseconds Number of milliseconds between each pipe poll
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*/
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static inline void Pipe_SetInterruptPeriod(uint8_t Milliseconds);
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/** Returns a mask indicating which pipe's interrupt periods have elapsed, indicating that the pipe should
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* be serviced.
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*
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* \return Mask whose bits indicate which pipes have interrupted
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*/
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static inline uint8_t Pipe_GetPipeInterrupts(void);
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/** Determines if the specified pipe number has interrupted (valid only for INTERRUPT type
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* pipes).
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*
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* \param[in] PipeNumber Index of the pipe whose interrupt flag should be tested
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*
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* \return Boolean true if the specified pipe has interrupted, false otherwise
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*/
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static inline bool Pipe_HasPipeInterrupted(uint8_t PipeNumber);
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/** Unfreezes the selected pipe, allowing it to communicate with an attached device. */
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static inline void Pipe_Unfreeze(void);
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/** Freezes the selected pipe, preventing it from communicating with an attached device. */
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static inline void Pipe_Freeze(void);
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/** Determines if the currently selected pipe is frozen, and not able to accept data.
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*
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* \return Boolean true if the currently selected pipe is frozen, false otherwise
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*/
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static inline bool Pipe_IsFrozen(void);
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/** Clears the master pipe error flag. */
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static inline void Pipe_ClearError(void);
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/** Determines if the master pipe error flag is set for the currently selected pipe, indicating that
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* some sort of hardware error has occurred on the pipe.
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*
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* \see \ref Pipe_GetErrorFlags() macro for information on retrieving the exact error flag.
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*
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* \return Boolean true if an error has occurred on the selected pipe, false otherwise
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*/
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static inline bool Pipe_IsError(void);
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/** Clears all the currently selected pipe's hardware error flags, but does not clear the master error
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* flag for the pipe.
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*/
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static inline void Pipe_ClearErrorFlags(void);
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/** Gets a mask of the hardware error flags which have occurred on the currently selected pipe. This
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* value can then be masked against the PIPE_ERRORFLAG_* masks to determine what error has occurred.
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*
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* \return Mask comprising of PIPE_ERRORFLAG_* bits indicating what error has occurred on the selected pipe
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*/
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static inline uint8_t Pipe_GetErrorFlags(void);
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/** Determines if the currently selected pipe may be read from (if data is waiting in the pipe
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* bank and the pipe is an IN direction, or if the bank is not yet full if the pipe is an OUT
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* direction). This function will return false if an error has occurred in the pipe, or if the pipe
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* is an IN direction and no packet (or an empty packet) has been received, or if the pipe is an OUT
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* direction and the pipe bank is full.
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*
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* \note This function is not valid on CONTROL type pipes.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if the currently selected pipe may be read from or written to, depending on its direction
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*/
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static inline bool Pipe_IsReadWriteAllowed(void);
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/** Determines if an IN request has been received on the currently selected pipe.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if the current pipe has received an IN packet, false otherwise.
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*/
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static inline bool Pipe_IsINReceived(void);
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/** Determines if the currently selected pipe is ready to send an OUT request.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if the current pipe is ready for an OUT packet, false otherwise.
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*/
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static inline bool Pipe_IsOUTReady(void);
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/** Determines if no SETUP request is currently being sent to the attached device on the selected
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* CONTROL type pipe.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if the current pipe is ready for a SETUP packet, false otherwise.
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*/
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static inline bool Pipe_IsSETUPSent(void);
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/** Sends the currently selected CONTROL type pipe's contents to the device as a SETUP packet.
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*
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* \ingroup Group_PipePacketManagement
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*/
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static inline void Pipe_ClearSETUP(void);
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/** Acknowledges the reception of a setup IN request from the attached device on the currently selected
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* pipe, freeing the bank ready for the next packet.
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*
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* \ingroup Group_PipePacketManagement
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*/
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static inline void Pipe_ClearIN(void);
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/** Sends the currently selected pipe's contents to the device as an OUT packet on the selected pipe, freeing
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* the bank ready for the next packet.
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*
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* \ingroup Group_PipePacketManagement
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*/
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static inline void Pipe_ClearOUT(void);
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/** Determines if the device sent a NAK (Negative Acknowledge) in response to the last sent packet on
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* the currently selected pipe. This occurs when the host sends a packet to the device, but the device
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* is not currently ready to handle the packet (i.e. its endpoint banks are full). Once a NAK has been
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* received, it must be cleared using \ref Pipe_ClearNAKReceived() before the previous (or any other) packet
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* can be re-sent.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if an NAK has been received on the current pipe, false otherwise
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*/
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static inline bool Pipe_IsNAKReceived(void);
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/** Clears the NAK condition on the currently selected pipe.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \see \ref Pipe_IsNAKReceived() for more details.
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*/
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static inline void Pipe_ClearNAKReceived(void);
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/** Determines if the currently selected pipe has had the STALL condition set by the attached device.
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*
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* \ingroup Group_PipePacketManagement
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*
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* \return Boolean true if the current pipe has been stalled by the attached device, false otherwise
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*/
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static inline bool Pipe_IsStalled(void);
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/** Clears the STALL condition detection flag on the currently selected pipe, but does not clear the
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* STALL condition itself (this must be done via a ClearFeature control request to the device).
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*
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* \ingroup Group_PipePacketManagement
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*/
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static inline void Pipe_ClearStall(void);
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#else
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#define Pipe_BytesInPipe() UPBCX
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#define Pipe_GetCurrentPipe() (UPNUM & PIPE_PIPENUM_MASK)
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#define Pipe_SelectPipe(pipenum) MACROS{ UPNUM = (pipenum); }MACROE
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#define Pipe_ResetPipe(pipenum) MACROS{ UPRST = (1 << (pipenum)); UPRST = 0; }MACROE
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#define Pipe_EnablePipe() MACROS{ UPCONX |= (1 << PEN); }MACROE
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#define Pipe_DisablePipe() MACROS{ UPCONX &= ~(1 << PEN); }MACROE
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#define Pipe_IsEnabled() ((UPCONX & (1 << PEN)) ? true : false)
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#define Pipe_GetPipeToken() (UPCFG0X & PIPE_TOKEN_MASK)
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#define Pipe_SetToken(token) MACROS{ UPCFG0X = ((UPCFG0X & ~PIPE_TOKEN_MASK) | (token)); }MACROE
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#define Pipe_SetInfiniteINRequests() MACROS{ UPCONX |= (1 << INMODE); }MACROE
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#define Pipe_SetFiniteINRequests(n) MACROS{ UPCONX &= ~(1 << INMODE); UPINRQX = (n); }MACROE
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#define Pipe_IsConfigured() ((UPSTAX & (1 << CFGOK)) ? true : false)
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#define Pipe_BoundEndpointNumber() ((UPCFG0X >> PEPNUM0) & PIPE_EPNUM_MASK)
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#define Pipe_SetInterruptPeriod(ms) MACROS{ UPCFG2X = (ms); }MACROE
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#define Pipe_GetPipeInterrupts() UPINT
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#define Pipe_HasPipeInterrupted(n) ((UPINT & (1 << (n))) ? true : false)
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#define Pipe_Unfreeze() MACROS{ UPCONX &= ~(1 << PFREEZE); }MACROE
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#define Pipe_Freeze() MACROS{ UPCONX |= (1 << PFREEZE); }MACROE
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#define Pipe_IsFrozen() ((UPCONX & (1 << PFREEZE)) ? true : false)
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#define Pipe_ClearError() MACROS{ UPINTX &= ~(1 << PERRI); }MACROE
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#define Pipe_IsError() ((UPINTX & (1 << PERRI)) ? true : false)
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#define Pipe_ClearErrorFlags() MACROS{ UPERRX = 0; }MACROE
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#define Pipe_GetErrorFlags() ((UPERRX & (PIPE_ERRORFLAG_CRC16 | PIPE_ERRORFLAG_TIMEOUT | \
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PIPE_ERRORFLAG_PID | PIPE_ERRORFLAG_DATAPID | \
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PIPE_ERRORFLAG_DATATGL)) | \
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(UPSTAX & PIPE_ERRORFLAG_OVERFLOW | PIPE_ERRORFLAG_UNDERFLOW))
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#define Pipe_IsReadWriteAllowed() ((UPINTX & (1 << RWAL)) ? true : false)
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|
|
#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{ uint8_t Temp = UPINTX; UPINTX = (Temp & ~(1 << RXINI)); \
|
|
UPINTX = (Temp & ~(1 << FIFOCON)); }MACROE
|
|
|
|
#define Pipe_ClearOUT() MACROS{ uint8_t Temp = UPINTX; UPINTX = (Temp & ~(1 << TXOUTI)); \
|
|
UPINTX = (Temp & ~(1 << FIFOCON)); }MACROE
|
|
|
|
#define Pipe_ClearSETUP() MACROS{ uint8_t Temp = UPINTX; UPINTX = (Temp & ~(1 << TXSTPI)); \
|
|
UPINTX = (Temp & ~(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
|
|
*
|
|
* \ingroup Group_PipeRW
|
|
*/
|
|
enum Pipe_WaitUntilReady_ErrorCodes_t
|
|
{
|
|
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
|
|
* within the software timeout period set by the
|
|
* \ref USB_STREAM_TIMEOUT_MS macro.
|
|
*/
|
|
};
|
|
|
|
/** Enum for the possible error return codes of the Pipe_*_Stream_* functions.
|
|
*
|
|
* \ingroup Group_PipeRW
|
|
*/
|
|
enum Pipe_Stream_RW_ErrorCodes_t
|
|
{
|
|
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.
|
|
*/
|
|
};
|
|
|
|
/* 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
|
|
*/
|
|
static inline uint8_t Pipe_Read_Byte(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
|
|
static inline uint8_t Pipe_Read_Byte(void)
|
|
{
|
|
return UPDATX;
|
|
}
|
|
|
|
/** Writes one byte from the currently selected pipe's bank, for IN direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
UPDATX = Byte;
|
|
}
|
|
|
|
/** Discards one byte from the currently selected pipe's bank, for OUT direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*/
|
|
static inline void Pipe_Discard_Byte(void) ATTR_ALWAYS_INLINE;
|
|
static inline void Pipe_Discard_Byte(void)
|
|
{
|
|
uint8_t Dummy;
|
|
|
|
Dummy = UPDATX;
|
|
}
|
|
|
|
/** Reads two bytes from the currently selected pipe's bank in little endian format, for OUT
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
union
|
|
{
|
|
uint16_t Word;
|
|
uint8_t Bytes[2];
|
|
} Data;
|
|
|
|
Data.Bytes[0] = UPDATX;
|
|
Data.Bytes[1] = UPDATX;
|
|
|
|
return Data.Word;
|
|
}
|
|
|
|
/** Reads two bytes from the currently selected pipe's bank in big endian format, for OUT
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
union
|
|
{
|
|
uint16_t Word;
|
|
uint8_t Bytes[2];
|
|
} Data;
|
|
|
|
Data.Bytes[1] = UPDATX;
|
|
Data.Bytes[0] = UPDATX;
|
|
|
|
return Data.Word;
|
|
}
|
|
|
|
/** Writes two bytes to the currently selected pipe's bank in little endian format, for IN
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
UPDATX = (Word & 0xFF);
|
|
UPDATX = (Word >> 8);
|
|
}
|
|
|
|
/** Writes two bytes to the currently selected pipe's bank in big endian format, for IN
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
UPDATX = (Word >> 8);
|
|
UPDATX = (Word & 0xFF);
|
|
}
|
|
|
|
/** Discards two bytes from the currently selected pipe's bank, for OUT direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*/
|
|
static inline void Pipe_Discard_Word(void) ATTR_ALWAYS_INLINE;
|
|
static inline void Pipe_Discard_Word(void)
|
|
{
|
|
uint8_t Dummy;
|
|
|
|
Dummy = UPDATX;
|
|
Dummy = UPDATX;
|
|
}
|
|
|
|
/** Reads four bytes from the currently selected pipe's bank in little endian format, for OUT
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
union
|
|
{
|
|
uint32_t DWord;
|
|
uint8_t Bytes[4];
|
|
} Data;
|
|
|
|
Data.Bytes[0] = UPDATX;
|
|
Data.Bytes[1] = UPDATX;
|
|
Data.Bytes[2] = UPDATX;
|
|
Data.Bytes[3] = UPDATX;
|
|
|
|
return Data.DWord;
|
|
}
|
|
|
|
/** Reads four bytes from the currently selected pipe's bank in big endian format, for OUT
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
union
|
|
{
|
|
uint32_t DWord;
|
|
uint8_t Bytes[4];
|
|
} Data;
|
|
|
|
Data.Bytes[3] = UPDATX;
|
|
Data.Bytes[2] = UPDATX;
|
|
Data.Bytes[1] = UPDATX;
|
|
Data.Bytes[0] = UPDATX;
|
|
|
|
return Data.DWord;
|
|
}
|
|
|
|
/** Writes four bytes to the currently selected pipe's bank in little endian format, for IN
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
UPDATX = (DWord & 0xFF);
|
|
UPDATX = (DWord >> 8);
|
|
UPDATX = (DWord >> 16);
|
|
UPDATX = (DWord >> 24);
|
|
}
|
|
|
|
/** Writes four bytes to the currently selected pipe's bank in big endian format, for IN
|
|
* direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*
|
|
* \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)
|
|
{
|
|
UPDATX = (DWord >> 24);
|
|
UPDATX = (DWord >> 16);
|
|
UPDATX = (DWord >> 8);
|
|
UPDATX = (DWord & 0xFF);
|
|
}
|
|
|
|
/** Discards four bytes from the currently selected pipe's bank, for OUT direction pipes.
|
|
*
|
|
* \ingroup Group_PipePrimitiveRW
|
|
*/
|
|
static inline void Pipe_Discard_DWord(void) ATTR_ALWAYS_INLINE;
|
|
static inline void Pipe_Discard_DWord(void)
|
|
{
|
|
uint8_t Dummy;
|
|
|
|
Dummy = UPDATX;
|
|
Dummy = UPDATX;
|
|
Dummy = UPDATX;
|
|
Dummy = UPDATX;
|
|
}
|
|
|
|
/* External Variables: */
|
|
/** Global indicating the maximum packet size of the default control pipe located at address
|
|
* 0 in the device. This value is set to the value indicated in the attached device's device
|
|
* descriptor once the USB interface is initialized into host mode and a device is attached
|
|
* to the USB bus.
|
|
*
|
|
* \note This variable should be treated as read-only in the user application, and never manually
|
|
* changed in value.
|
|
*/
|
|
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.
|
|
*
|
|
* 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
|
|
* sending data to the device in OUT mode. IN type pipes are also automatically configured to accept infinite
|
|
* 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.
|
|
*
|
|
* \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.
|
|
*
|
|
* \return Boolean true if the configuration is successful, 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);
|
|
|
|
/** Spinloops 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).
|
|
*
|
|
* \ingroup Group_PipeRW
|
|
*
|
|
* \return A value from the Pipe_WaitUntilReady_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t Pipe_WaitUntilReady(void);
|
|
|
|
/** 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 of the endpoint within the attached device to check
|
|
*
|
|
* \return Boolean true if a pipe bound to the given endpoint address is found, false 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);
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/** FLASH buffer source version of \ref Pipe_Write_Stream_BE().
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*
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* \note The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
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*
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* \ingroup Group_PipeStreamRW
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] Callback Name of a callback routine to call between successive USB packet transfers, NULL if no callback
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Write_PStream_BE(const void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
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/** Reads the given number of bytes from the pipe into the given buffer in little endian,
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* sending full packets to the device as needed. The last packet filled is not automatically sent;
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|
* the user is responsible for manually sending the last written packet to the host via the
|
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* \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.
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*
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* The callback routine should be created according to the information in \ref Group_StreamCallbacks.
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* 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.
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*
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|
* 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().
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*
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* \ingroup Group_PipeStreamRW
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*
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* \param[out] Buffer Pointer to the source data buffer to write to.
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* \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
|
|
*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Read_Stream_LE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
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/** EEPROM buffer source version of \ref Pipe_Read_Stream_LE().
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*
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|
* \ingroup Group_PipeStreamRW
|
|
*
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|
* \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.
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|
*/
|
|
uint8_t Pipe_Read_EStream_LE(void* Buffer, uint16_t Length __CALLBACK_PARAM) ATTR_NON_NULL_PTR_ARG(1);
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|
|
|
/** 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
|
|
#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)
|
|
{
|
|
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);
|
|
};
|
|
|
|
#endif
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|