/*
LUFA Library
Copyright (C) Dean Camera, 2010.
-
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
+ without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
arising out of or in connection with the use or performance of
this software.
*/
-
+
/** \file
* \brief USB host pipe management definitions.
*
*
* \note This file should not be included directly. It is automatically included as needed by the USB driver
* dispatch header located in LUFA/Drivers/USB/USB.h.
- */
+ */
/** \ingroup Group_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.
*/
-
-/** \ingroup Group_PipeRW
+
+/** \ingroup Group_PipeRW
* @defgroup Group_PipePrimitiveRW Read/Write of Primitive Data Types
*
* Functions, macros, variables, enums and types related to data reading and writing of primitive data types
* from and to pipes.
*/
-
+
/** \ingroup Group_PipeManagement
* @defgroup Group_PipePacketManagement Pipe Packet Management
*
* Functions, macros, variables, enums and types related to packet management of pipes.
*/
-
+
/** \ingroup Group_PipeManagement
* @defgroup Group_PipeControlReq Pipe Control Request Management
*
* 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
#include "../../../Common/Common.h"
#include "../HighLevel/USBTask.h"
-
+
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#if !defined(__INCLUDE_FROM_USB_DRIVER)
#error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
#endif
-
+
/* Public Interface - May be used in end-application: */
/* Macros: */
+ /** \name Pipe Error Flag Masks */
+ //@{
/** Mask for \ref Pipe_GetErrorFlags(), indicating that an overflow error occurred in the pipe on the received data. */
#define PIPE_ERRORFLAG_OVERFLOW (1 << 6)
/** Mask for \ref Pipe_GetErrorFlags(), indicating that a hardware data toggle error occurred in the pipe. */
#define PIPE_ERRORFLAG_DATATGL (1 << 0)
+ //@}
+ /** \name Pipe Token Masks */
+ //@{
/** Token mask for \ref Pipe_ConfigurePipe(). This sets the pipe as a SETUP token (for CONTROL type pipes),
* which will trigger a control request on the attached device when data is written to the pipe.
*/
* indicating that the pipe data will flow from host to device.
*/
#define PIPE_TOKEN_OUT (2 << PTOKEN0)
-
+ //@}
+
+ /** \name Pipe Bank Mode Masks */
+ //@{
/** Mask for the bank mode selection for the \ref Pipe_ConfigurePipe() macro. This indicates that the pipe
* should have one single bank, which requires less USB FIFO memory but results in slower transfers as
* only one USB device (the AVR or the attached device) can access the pipe's bank at the one time.
* bank.
*/
#define PIPE_BANK_DOUBLE (1 << EPBK0)
+ //@}
/** Pipe address for the default control pipe, which always resides in address 0. This is
* defined for convenience to give more readable code when used with the pipe macros.
*/
#define PIPE_CONTROLPIPE 0
- /** Default size of the default control pipe's bank, until altered by the Endpoint0Size value
+ /** Default size of the default control pipe's bank, until altered by the Endpoint0Size value
* in the device descriptor of the attached device.
*/
#define PIPE_CONTROLPIPE_DEFAULT_SIZE 64
-
+
/** Pipe number mask, for masking against pipe addresses to retrieve the pipe's numerical address
* in the device.
*/
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_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
{
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.
*
{
UPNUM = PipeNumber;
}
-
+
/** Resets the desired pipe, including the pipe banks and flags.
*
* \param[in] PipeNumber Index of the pipe to reset.
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.
*
{
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.
{
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
{
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.
*
{
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.
*
{
UPCFG2X = Milliseconds;
}
-
+
/** Returns a mask indicating which pipe's interrupt periods have elapsed, indicating that the pipe should
* be serviced.
*
{
return UPINT;
}
-
+
/** Determines if the specified pipe number has interrupted (valid only for INTERRUPT type
* pipes).
*
{
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)
{
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.
*
{
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.
*/
{
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.
*
(UPSTAX & (PIPE_ERRORFLAG_OVERFLOW | PIPE_ERRORFLAG_UNDERFLOW)));
}
+ /** Retrieves the number of busy banks in the currently selected pipe, which have been queued for
+ * transmission via the \ref Pipe_ClearOUT() command, or are awaiting acknowledgement via the
+ * \ref Pipe_ClearIN() command.
+ *
+ * \ingroup Group_PipePacketManagement
+ *
+ * \return Total number of busy banks in the selected pipe.
+ */
+ static inline uint8_t Pipe_GetBusyBanks(void)
+ {
+ return (UPSTAX & (0x03 << NBUSYBK0));
+ }
+
/** 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
* \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;
{
return ((UPINTX & (1 << RWAL)) ? true : false);
}
-
+
/** Determines if a packet has been received on the currently selected IN pipe from the attached device.
*
* \ingroup Group_PipePacketManagement
{
return ((UPINTX & (1 << RXINI)) ? true : false);
}
-
+
/** Determines if the currently selected OUT pipe is ready to send an OUT packet to the attached device.
*
* \ingroup Group_PipePacketManagement
{
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
+ * \ingroup Group_PipePacketManagement
*/
static inline void Pipe_ClearSETUP(void) ATTR_ALWAYS_INLINE;
static inline void Pipe_ClearSETUP(void)
{
UPINTX &= ~(1 << NAKEDI);
}
-
+
/** Determines if the currently selected pipe has had the STALL condition set by the attached device.
*
* \ingroup Group_PipePacketManagement
{
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).
*
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.
*
uint16_t Word;
uint8_t Bytes[2];
} Data;
-
+
Data.Bytes[0] = UPDATX;
Data.Bytes[1] = UPDATX;
-
+
return Data.Word;
}
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.
*
UPDATX = (Word & 0xFF);
UPDATX = (Word >> 8);
}
-
+
/** Writes two bytes to the currently selected pipe's bank in big endian format, for IN
* direction pipes.
*
static inline void Pipe_Discard_Word(void)
{
uint8_t Dummy;
-
+
Dummy = UPDATX;
Dummy = UPDATX;
}
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;
}
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;
}
UPDATX = (DWord >> 16);
UPDATX = (DWord >> 24);
}
-
+
/** Writes four bytes to the currently selected pipe's bank in big endian format, for IN
* direction pipes.
*
UPDATX = (DWord >> 16);
UPDATX = (DWord >> 8);
UPDATX = (DWord & 0xFF);
- }
-
- /** Discards four bytes from the currently selected pipe's bank, for OUT direction pipes.
+ }
+
+ /** Discards four bytes from the currently selected pipe's bank, for OUT direction pipes.
*
* \ingroup Group_PipePrimitiveRW
*/
static inline void Pipe_Discard_DWord(void)
{
uint8_t Dummy;
-
+
Dummy = UPDATX;
Dummy = UPDATX;
Dummy = UPDATX;
* 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
+ * 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 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
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
+ /** 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).
*
* \ingroup Group_PipeRW
* \return A value from the \ref 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.
*
#if !defined(ENDPOINT_CONTROLEP)
#define ENDPOINT_CONTROLEP 0
#endif
-
+
/* Inline Functions: */
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)
{
uint8_t MaskVal = 0;
uint16_t CheckBytes = 8;
-
+
while ((CheckBytes < Bytes) && (CheckBytes < PIPE_MAX_SIZE))
{
MaskVal++;
CheckBytes <<= 1;
}
-
+
return (MaskVal << EPSIZE0);
}
#if defined(__cplusplus)
}
#endif
-
+
#endif
/** @} */
+
projects / pub / USBasp.git / blobdiff