/** \file
*
* This file contains special DoxyGen information for the generation of the main page and other special
* documentation pages. It is not a project source file.
*/
/** \page Page_ChangeLog Project Changelog
*
* \section Sec_ChangeLogXXXXXX Version XXXXXX
*
* New:
* - Added new Dual Role Keyboard/Mouse demo
* - Added new HID_HOST_BOOT_PROTOCOL_ONLY compile time token to reduce the size of the HID Host Class driver when
* Report protocol is not needed
* - Added new MIDI LowLevel and ClassDriver Host demo, add new MIDI Host Class driver
* - Added new CDC/Mouse ClassDriver device demo
* - Added new Joystick Host ClassDriver and LowLevel demos
* - Added new Printer Host mode Class driver
* - Added new Printer Host mode ClassDriver demo
* - Added optional support for double banked endpoints and pipes in the Device and Host mode Class drivers
* - Added new stream creation function to the CDC Class drivers, to easily make standard I/O streams from CDC Class driver instances
*
* Changed:
* - Removed mostly useless "TestApp" demo, as it was mainly useful only for checking for sytax errors in the library
* - MIDI device demos now receive MIDI events from the host and display note ON messages via the board LEDs
* - Cleanups to the Device mode Mass Storage demo application SCSI routines
* - Changed Audio Class driver sample read/write functions to be inline, to reduce the number of cycles needed to transfer
* samples to and from the device (allowing more time for sample processing and output)
* - Audio class Device mode demos now work at both 16MHz and 8MHz, rather than just at 8MHz
* - The previous USBtoSerial demo has been moved into the projects directory, as it was just a modified CDC demo
* - The Endpoint/Pipe functions now use the const qualifier on the input buffer
* - Changed the CALLBACK_HIDParser_FilterHIDReportItem() callback to pass a HID_ReportItem_t rather than just the current
* item's attributes, to expose more information on the item (including it's type, collection path, etc.)
* - Changed MouseHostWithParser demos to check that the report items have a Mouse usage collection as a parent at some point,
* to prevent Joysticks from enumerating with the demo
* - Corrected the name of the misnamed USB_GetDeviceConfigDescriptor() function to USB_Host_GetDeviceConfigDescriptor().
* - Keyboard LowLevel/ClassDriver demos now support multiple simultaneous keypresses (up to 6) per report
*
* Fixed:
* - Fixed PrinterHost demo returning invalid Device ID data when the attached device does not have a
* device ID (thanks to Andrei Krainev)
* - Changed LUFA_VERSION_INTEGER define to use BCD values, to make comparisons eaiser
* - Fixed issue in the HID Host class driver's HID_Host_SendReportByID() routine using the incorrect mode (control/pipe)
* to send report to the attached device
* - Fixed ClassDriver AudioOutput device demo not selecting an audio output mode
* - Fixed incorrect SampleFrequencyType value in the AudioInput and AudioOutput ClassDriver demos' descriptors
* - Fixed incorrect event name rule in demo/project/bootloader makefiles
* - Fixed HID device class driver not reselecting the correct endpoint once the user callback routines have been called
* - Corrected HID descriptor in the Joystick Device demos - buttons should be placed outside the pointer collection
* - Fixed HID report parser collection paths invalid due to misplaced semicolon in the free path item search loop
* - Fixed HID host Class driver report send/receive report broken when issued through the control pipe
* - Fixed HOST_STATE_AS_GPIOR compile time option being ignored when in host mode (thanks to David Lyons)
* - Fixed LowLevel Keyboard demo not saving the issues report only after it has been sent to the host
*
* \section Sec_ChangeLog090924 Version 090924
*
* New:
* - Added new host mode class drivers and matching demos to the library for rapid application development
* - Added flag to the HID report parser to indicate if a device has multiple reports
* - Added new EVENT_USB_Device_StartOfFrame() event, controlled by the new USB_Device_EnableSOFEvents() and
* USB_Device_DisableSOFEvents() macros to give bus-synchronised millisecond interrupts when in USB device mode
* - Added new Endpoint_SetEndpointDirection() macro for bidirectional endpoints
* - Added new AVRISP project, a LUFA powered clone of the Atmel AVRISP-MKII programmer
* - Added ShutDown() functions for all hardware peripheral drivers, so that peripherals can be turned off after use
* - Added new CDC_Device_Flush() command to the device mode CDC Class driver to flush Device->Host data
* - Added extra masks to the SPI driver, changed SPI_Init() so that the clock polarity and sample modes can be set
* - Added new callback to the HID report parser, so that the user application can filter only the items it is interested
* in to be stored into the HIDReportInfo structure to save RAM
* - Added support for the officially recommended external peripheral layout for the BUMBLEB board (thanks to Dave Fletcher)
* - Added new Pipe_IsFrozen() macro to determine if the currently selected pipe is frozen
* - Added new USB_GetHIDReportSize() function to the HID report parser to retrieve the size of a given report by its ID
* - Added new combined Mass Storage and Keyboard demo (thanks to Matthias Hullin)
*
* Changed:
* - SetIdle requests to the HID device driver with a 0 idle period (send changes only) now only affect the requested
* HID interface within the device, not all HID interfaces
* - Added explicit attribute masks to the device mode demos' descriptors
* - Added return values to the CDC and MIDI class driver transmit functions
* - Optimized Endpoint_Read_Word_* and Pipe_Read_Word_* macros to reduce compiled size
* - Added non-null function parameter pointer restrictions to USB Class drivers to improve user code reliability
* - Added new "Common" section to the class drivers, to hold all mode-independant definitions for clarity
* - Moved SCSI command/sense constants into the Mass Storage Class driver, instead of the user-code
* - Altered the SCSI commands in the LowLevel Mass Storage Host to save on FLASH space by reducing function calls
* - Changed the parameters and behaviour of the USB_GetDeviceConfigDescriptor() function so that it now performs size checks
* and data validations internally, to simplify user code
* - Changed HIDParser to only zero out important values in the Parsed HID Report Item Information structure to save cycles
* - The HID report parser now always processed FEATURE items - HID_ENABLE_FEATURE_PROCESSING token now has no effect
* - The HID report parser now always ignores constant-data items, HID_INCLUDE_CONSTANT_DATA_ITEMS token now has no effect
* - The Benito Programmer project now has its own unique VID/PID pair allocated from the Atmel donated LUFA VID/PID pool
* - Add in new invalid event hook check targets to project makefiles to produce compilation errors when invalid event names
* are used in a project
* - The HID Report Parser now gives information on the total length of each report within a HID interface
* - The USE_NONSTANDARD_DESCRIPTOR_NAMES compile time token has been removed - there are now seperate USB_Descriptor_* and
* USB_StdDescriptor_* structures for both the LUFA and standardized element naming conventions so both may be used
*
* Fixed:
* - Fixed possible lockup in the CDC device class driver, when the host sends data that is a multiple of the
* endpoint's bank
* - Fixed swapped parameters in the HID state memory copy call while processing a HID PUSH item in the HID report parser
* - Fixed memory corruption HID report parser when too many COLLECTION or PUSH items were processed
* - Fixed HID report parser not resetting the FEATURE item count when a REPORT ID item is encountered
* - Fixed USBtoSerial demos not reading in UDR1 when the USART receives data but the USB interface is not enumerated,
* causing continuous USART receive interrupts
* - Fixed misspelt event name in the Class driver USBtoSerial demo, preventing correct operation
* - Fixed invalid data being returned when a GetStatus request is issued in Device mode with an unhandled data recipient
* - Added hardware USART receive interrupt and software buffering to the Benito project to ensure received data is not
* missed or corrupted
* - Fixed Device mode HID Class driver always sending IN packets, even when nothing to report
* - Fixed Device mode HID Class driver not explicitly initializing the ReportSize parameter to zero before calling callback
* routine, so that ignored callbacks don't cause incorrect data to be sent
* - Fixed StillImageHost not correctly freezing and unfreezing data pipes while waiting for a response block header
* - Fixed error in the PrinterHost demo preventing the full page data from being sent to the attached device (thanks to John Andrews)
* - Fixed CDC based demos and projects' INF driver files under 64 bit versions of Windows (thanks to Ronny Hanson, Thomas Bleeker)
* - Re-add in missing flip, flip-ee, dfu and dfu-ee targets to project makefiles (thanks to Opendous Inc.)
* - Fix allowable F_CPU values comment in project makefiles to more accurately reflect the allowable values on the USB AVRs
* - Fixed DFU and CDC class bootloaders on the series 2 USB AVRs, corrected invalid signatures, added support for the new
* ATMEGAxx2 series 2 variant AVRs to the DFU bootloader
* - Fixed Low Level USBtoSerial demo not storing received characters (thanks to Michael Cooper)
* - Fixed MIDI Device Class driver not sending/receiving MIDI packets of the correct size (thanks to Thomas Bleeker)
*
*
* \section Sec_ChangeLog090810 Version 090810
*
* New:
* - Added new device class drivers and matching demos to the library for rapid application development
* - Added new PrinterHost demo (thanks to John Andrews)
* - Added USB Missle Launcher project, submitted by Dave Fletcher
* - Added new Benito Arduino Programmer project
* - Added incomplete device and host mode demos for later enhancement
* - Updated MassStorage device block write routines to use ping-pong Dataflash buffering to increase throughput by around 30%
* - Error status LEDs shown when device endpoint configuration fails to complete in all demos and projects
* - Added new USB_Host_SetDeviceConfiguration() convenience function for easy configuration selection of devices while in USB
* host mode
* - Added new USB_Host_ClearPipeStall() convenience function to clear a stall condition on an attached device's endpoint
* - Added new USB_Host_GetDeviceDescriptor() convenience function to retrieve the attached device's Device descriptor
* - Added new Endpoint_ClearStatusStage() convenience function to assist with the status stages of control transfers
* - Added new USE_INTERNAL_SERIAL define for using the unique serial numbers in some AVR models as the USB device's serial number,
* added NO_INTERNAL_SERIAL compile time option to turn off new serial number reading code
* - Added new DATAFLASH_CHIP_MASK() macro to the Dataflash driver, which returns the Dataflash select mask for the given chip index
* - Added new HOST_STATE_WaitForDeviceRemoval host state machine state for non-blocking disabling of device communications until the
* device has been removed (for use when an error occurs or communications with the device have completed)
* - Added new FAST_STREAM_TRANSFERS compile time option for faster stream transfers via multiple bytes copied per stream loop
* - Added stdio stream demo code to the CDC device demos, to show how to create standard streams out of the virtual serial ports
* - Added new EEPROM and FLASH buffer versions of the Endpoint and Pipe stream functions
* - Added new USE_FLASH_DESCRIPTORS and FIXED_NUM_CONFIGURATIONS compile time options
* - Added support for the new ATMEGA32U2, ATMEGA16U2 and ATMEGA8U2 AVR models
* - Added new USB_DeviceState variable to keep track of the current Device mode USB state
* - Added new LEDs_ToggleLEDs() function to the LEDs driver
* - Added new Pipe_BoundEndpointNumber() and Pipe_IsEndpointBound() functions
* - Added new DEVICE_STATE_AS_GPIOR and HOST_STATE_AS_GPIOR compile time options
* - Added 404 Not Found errors to the webserver in the RNDIS demos to indicate invalid URLs
*
* Changed:
* - Deprecated psuedo-scheduler and removed dynamic memory allocator from the library (first no longer needed and second unused)
* - The device-mode CALLBACK_USB_GetDescriptor() function now has an extra parameter so that the memory space in which the requested
* descriptor is located can be specified. This means that descriptors can now be located in multiple memory spaces within a device.
* - Removed vague USB_IsConnected global - test USB_DeviceState or USB_HostState explicitly to gain previous functionality
* - Removed USB_IsSuspended global - test USB_DeviceState against DEVICE_STATE_Suspended instead
* - Extended USB_GetDeviceConfigDescriptor() routine to require the configuration number within the device to fetch
* - Dataflash_WaitWhileBusy() now always ensures that the dataflash is ready for the next command immediately after returning,
* no need to call Dataflash_ToggleSelectedChipCS() afterwards
* - Low level API MIDI device demo no longer blocks if a note change event is sent while the endpoint is not ready
* - Pipe_GetErrorFlags() now returns additional error flags for overflow and underflow errors
* - Pipe stream functions now automatically set the correct pipe token, so that bidirectional pipes can be used
* - Pipe_ConfigurePipe() now automatically defaults IN pipes to accepting infinite IN requests, this can still be changed by calling
* the existing Pipe_SetFiniteINRequests() function
* - Changed F_CLOCK entries in project makefiles to alias to F_CPU by default, as this is the most common case
* - Host mode demos now use sane terminal escape codes, so that text is always readable and events/program output is visually distinguished
* from oneanother using foreground colours
* - Internal per-device preprocessing conditions changed to per-device series rather than per-controller group for finer-grain
* internal control
* - Interrupts are no longer disabled during the processing of Control Requests on the default endpoint while in device mode
* - AudioOutput demos now always output to board LEDs, regardless of output mode (removed AUDIO_OUT_LEDS project option)
* - Removed SINGLE_DEVICE_CONFIGURATION compile time option in favour of the new FIXED_NUM_CONFIGURATIONS option so that the exact number
* of device configurations can be defined statically
* - Removed VBUS events, as they are already exposed to the user application via the regular device connection and disconnection events
* - Renamed and altered existing events to properly seperate out Host and Device mode events
*
* Fixed:
* - Changed bootloaders to use FLASHEND rather than the existence of RAMPZ to determine if far FLASH pointers are needed to fix
* bootloaders on some of the USB AVR devices where avr-libc erronously defines RAMPZ
* - Fixes to MassStorageHost for better device compatibility (increase command timeout, change MassStore_WaitForDataReceived()
* to only unfreeze and check one data pipe at a time) to prevent incorrect device enumerations and freezes while trasferring data
* - Make Pipe_ConfigurePipe() mask the given endpoint number against PIPE_EPNUM_MASK to ensure the endpoint IN direction bit is
* cleared to prevent endpoint type corruption
* - Fixed issue opening CDC-ACM ports on hosts when the CDC device tries to send data before the host has set the line encoding
* - Fixed USB_OPT_MANUAL_PLL option being ignored during device disconnects on some models (thanks to Brian Dickman)
* - Fixed documentation mentioning Pipe_GetCurrentToken() function when correct function name is Pipe_GetPipeToken()
* - Fixed ADC driver for the ATMEGA32U4 and ATMEGA16U4 (thanks to Opendous Inc.)
* - Fixed CDCHost demo unfreezing the pipes at the point of configuration, rather than use
* - Fixed MassStorage demo not clearing the reset flag when a Mass Storage Reset is issued while not processing a command
* - Fixed USB_Host_SendControlRequest() not re-suspending the USB bus when initial device ready-wait fails
* - Fixed USB Pad regulator not being disabled on some AVR models when the USB_OPT_REG_DISABLED option is used
* - Fixed Host mode to Device mode UID change not causing a USB Disconnect event when a device was connected
* - Fixed Mouse/Keyboard demos not performing the correct arithmetic on the Idle period at the right times (thanks to Brian Dickman)
* - Fixed GenericHID failing HID class tests due to incorrect Logical Minimum and Logical Maximum values (thanks to Søren Greiner)
* - Fixed incorrect PIPE_EPNUM_MASK mask causing pipe failures on devices with endpoint addresses of 8 and above (thanks to John Andrews)
* - Fixed report data alignment issues in the MouseHostWithParser demo when X and Y movement data size is not a multiple of 8 bits
* - Fixed HID Report Descriptor Parser not correctly resetting internal states when a REPORT ID element is encountered
* - Fixed incorrect BUTTONS_BUTTON1 for the STK526 target
* - Fixed RNDIS demos freezing when more than one connection was attempted simultaneously, causing memory corruption
* - Fixed USBtoSerial demo receiving noise from the USART due to pullup not being enabled
*
*
* \section Sec_ChangeLog090605 Version 090605
*
* - Fixed bug in RNDISEthernet and DualCDC demos not using the correct USB_ControlRequest structure for control request data
* - Fixed documentation showing incorrect USB mode support on the supported AVRs list
* - Fixed RNDISEthernet not working under Linux due to Linux requiring an "optional" RNDIS request which was unhandled
* - Fixed Mouse and Keyboard device demos not acting in accordance with the HID specification for idle periods (thanks to Brian Dickman)
* - Removed support for endpoint/pipe non-control interrupts; these did not act in the way users expected, and had many subtle issues
* - Fixed Device Mode not handling Set Feature and Clear Feature Chapter 9 requests that are addressed to the device (thanks to Brian Dickman)
* - Moved control endpoint interrupt handling into the library itself, enable via the new INTERRUPT_CONTROL_ENDPOINT token
* - Fixed CDCHost not clearing configured pipes and resetting configured pipes mask when a partially enumerated invalid CDC
* interface is skipped
* - Clarified the size of library tokens which accept integer values in the Compile Time Tokens page, values now use the smallest datatype
* inside the library that is able to hold their defined value to save space
* - Removed DESCRIPTOR_ADDRESS() macro as it was largely supurflous and only served to obfuscate code
* - Rewritten event system to remove all macros, to make user code clearer
* - Fixed incorrect ENDPOINT_EPNUM_MASK mask preventing endpoints above EP3 from being selected (thanks to Jonathan Oakley)
* - Removed STREAM_CALLBACK() macro - callbacks now use regular function definitions to clarify user code
* - Removed DESCRIPTOR_COMPARATOR() macro - comparators should now use regular function definitions to clarify user code
* - USB_IsConnected is now cleared before the USB_Disconnect() event is fired in response to VBUS being removed
* - Fixed incorrect PID value being used in the USBtoSerial project (thanks to Phill)
* - Deleted StdDescriptors.c, renamed USB_GetDescriptor() to CALLBACK_USB_GetDescriptor, moved ConfigDescriptor.c/.h from the
* LUFA/Drivers/USB/Class/ directory to LUFA/Drivers/USB/HighLevel/ in preperation for the new USB class APIs
* - Moved out each demos' functionality library files (e.g. Ring Buffer library) to /Lib directories for a better directory structure
* - Removed Tx interrupt from the USBtoSerial demo; now sends characters via polling to ensure more time for the Rx interrupt
* - Fixed possible enumeration errors from spinloops which may fail to exit if the USB connection is severed before the exit condition
* becomes true
*
*
* \section Sec_ChangeLog090510 Version 090510
*
* - Added new GenericHIDHost demo
* - Corrections to the KeyboardHost and MouseHost demos' pipe handling to freeze and unfreeze the data pipes at the point of use
* - KeyboardHost, MouseHost and GenericHIDHost demos now save and restore the currently selected pipe inside the pipe ISR
* - Changed GenericHID device demo to use the LUFA scheduler, added INTERRUPT_DATA_ENDPOINT and INTERRUPT_CONTROL_ENDPOINT compile
* time options
* - All comments in the library, bootloaders, demos and projects have now been spell-checked and spelling mistakes/typos corrected
* - Added new PIMA_DATA_SIZE() define to the Still Image Host demo
* - Add call to MassStore_WaitForDataReceived() in MassStore_GetReturnedStatus() to ensure that the CSW has been received in the
* extended MSC timeout period before continuing, to prevent long processing delays from causing the MassStore_GetReturnedStatus()
* to early-abort (thanks to Dmitry Maksimov)
* - Move StdRequestType.h, StreamCallbacks.h, USBMode.h from the LowLevel USB driver directory to the HighLevel USB driver directory,
* where they are more suited
* - Removed all binary constants and replaced with decimal or hexadecimal constants so that unpatched GCC compilers can still build the
* code without having to be itself patched and recompiled first
* - Added preprocessor checks and documentation to the bootloaders giving information about missing SIGNATURE_x defines due to
* outdated avr-libc versions.
* - Added support to the CDCHost demo for devices with multiple CDC interfaces which are not the correct ACM type preceding the desired
* ACM CDC interface
* - Fixed GenericHID demo not starting USB and HID management tasks when not using interrupt driven modes (thanks to Carl Kjeldsen)
* - Fixed RNDISEthenet demo checking the incorrect message field for packet size constraints (thanks to Jonathan Oakley)
* - Fixed WriteNextReport code in the GenericHIDHost demo using incorrect parameter types and not selecting the correct endpoint
* - Adjusted sample CTC timer calculations in the AudioOutput and AudioInput demos to match the CTC calculations in the AVR datasheet,
* and to fix instances where rounding caused the endpoint to underflow (thanks to Robin Theunis)
* - The USB_Host_SendControlRequest() function no longer automatically selects the Control pipe (pipe 0), so that other control type
* pipes can be used with the function
* - The USB Host management task now saves and restores the currently selected pipe before and after the task completes
* - Fixed GenericHIDHost demo report write routine incorrect for control type requests (thanks to Andrei Krainev)
* - Removed Endpoint_ClearCurrentBank() and Pipe_ClearCurrentBank() in favour of new Endpoint_ClearIN(), Endpoint_ClearOUT(),
* Pipe_ClearIN() and Pipe_ClearOUT() macros (done to allow for the detection of packets of zero length)
* - Renamed *_ReadWriteAllowed() macros to *_IsReadWriteAllowed() to remain consistent with the rest of the LUFA API
* - Endpoint_IsSetupReceived() macro has been renamed to Endpoint_IsSETUPReceived(), Endpoint_ClearSetupReceived() macro has been
* renamed to Endpoint_ClearSETUP(), the Pipe_IsSetupSent() macro has been renamed to Pipe_IsSETUPSent() and the
* Pipe_ClearSetupSent() macro is no longer applicable and should be removed - changes made to compliment the new endpoint and pipe
* bank management API
* - Updated all demos, bootloaders and projects to use the new endpoint and pipe management APIs (thanks to Roman Thiel from Curetis AG)
* - Updated library doxygen documentation, added groups, changed documentation macro functions to real functions for clarity
* - Removed old endpoint and pipe aliased read/write/discard routines which did not have an explicit endian specifier for clarity
* - Removed the ButtLoadTag.h header file, as no one used for its intended purpose anyway
* - Renamed the main Drivers/AT90USBXXX directory to Drivers/Peripheral, renamed the Serial_Stream driver to SerialStream
* - Fixed CDC and USBtoSerial demos freezing where buffers were full while still transmitting or receiving (thanks to Peter Hand)
* - Removed "Host_" section of the function names in ConfigDescriptor.h, as most of the routines can now be used in device mode on the
* device descriptor
* - Renamed functions in the HID parser to have a "USB_" prefix and the acronym "HID" in the name
* - Fixed incorrect HID interface class and subclass values in the Mouse and KeyboardMouse demos (thanks to Brian Dickman)
* - Capitalised the "Descriptor_Search" and "Descriptor_Search_Comp" prefixes of the values in the DSearch_Return_ErrorCodes_t and
* DSearch_Comp_Return_ErrorCodes_t enums
* - Removed "ERROR" from the enum names in the endpoint and pipe stream error code enums
* - Renamed the USB_PowerOnErrorCodes_t enum to USB_InitErrorCodes_t, renamed the POWERON_ERROR_NoUSBModeSpecified enum value to
* USB_INITERROR_NoUSBModeSpecified
* - Renamed USB_PowerOnFail event to USB_InitFailure
* - Renamed OTG.h header functions to be more consistent with the rest of the library API
* - Changed over all deprecated GCC structure tag initializers to the standardized C99 format (thanks to Mike Alexander)
* - USB_HostRequest renamed to USB_ControlRequest, entire control request header is now read into USB_ControlRequest in Device mode
* rather than having the library pass only partially read header data to the application
* - The USB_UnhandledControlPacket event has had its parameters removed, in favour of accessing the new USB_ControlRequest structure
* - The Endpoint control stream functions now correctly send a ZLP to the host when less data than requested is sent
* - Fixed USB_RemoteWakeupEnabled flag never being set (the REMOTE WAKEUP Set Feature request was not being handled)
* - Renamed the FEATURELESS_CONTROL_ONLY_DEVICE compile-time token to CONTROL_ONLY_DEVICE
* - Endpoint configuration is now refined to give better output when all configurations have static inputs - removed the now useless
* STATIC_ENDPOINT_CONFIGURATION compile time token
* - Fixed SPI driver init function not clearing SPI2X bit when not needed
* - Fixed PREVENT ALLOW MEDIUM REMOVAL command issuing in the MassStorageHost demo using incorrect parameters (thanks to Mike Alex)
* - Fixed MassStorageHost demo broken due to an incorrect if statement test in MassStore_GetReturnedStatus()
* - Fixed reversed signature byte ordering in the CDC bootloader (thanks to Johannes Raschke)
* - Changed PIPE_CONTROLPIPE_DEFAULT_SIZE from 8 to 64 to try to prevent problems with faulty devices which do not respect the given
* wLength value when reading in the device descriptor
* - Fixed missing semicolon in the ATAVRUSBRF01 LED board driver code (thanks to Morten Lund)
* - Changed LED board driver code to define dummy LED masks for the first four board LEDs, so that user code can be compiled for boards
* with less than four LEDs without code modifications (thanks to Morten Lund)
* - Changed HWB board driver to Buttons driver, to allow for the support of future boards with more than one mounted GPIO button
* - Serial driver now correctly calculates the baud register value when in double speed mode
* - Init function of the Serial driver is now static inline to product smaller code for the common-case of static init values
*
*
* \section Sec_ChangeLog090401 Version 090401
*
* - Fixed MagStripe project configuration descriptor containing an unused (blank) endpoint descriptor
* - Incorporated makefile changes by Denver Gingerich to retain compatibility with stock (non-WinAVR) AVR-GCC installations
* - Fixed makefile EEPROM programming targets programming FLASH data in addition to EEPROM data
* - LUFA devices now enumerate correctly with LUFA hosts
* - Fixed Configuration Descriptor search routine freezing when a comparator returned a failure
* - Removed HID report item serial dump in the MouseHostWithParser and KeyboardHostWithParser - useful only for debugging, and
* slowed down the enumeration of HID devices too much
* - Increased the number of bits per track which can be read in the MagStripe project to 8192 when compiled for the AT90USBXXX6/7
* - Fixed KeyboardMouse demo discarding the wIndex value in the REQ_GetReport request
* - USBtoSerial demo now discards all Rx data when not connected to a USB host, rather than buffering characters for transmission
* next time the device is attached to a host.
* - Added new F_CLOCK compile time constant to the library and makefiles, to give the raw input clock (used to feed the PLL before any
* clock prescaling is performed) frequency, so that the PLL prescale mask can be determined
* - Changed stream wait timeout counter to be 16-bit, so that very long timeout periods can be set for correct communications with
* badly designed hosts or devices which greatly exceed the USB specification limits
* - Mass Storage Host demo now uses a USB_STREAM_TIMEOUT_MS of two seconds to maintain compatibility with poorly designed devices
* - Function attribute ATTR_ALWAYSINLINE renamed to ATTR_ALWAYS_INLINE to match other function attribute macro naming conventions
* - Added ATTR_ALWAYS_INLINE attribute to several key inlined library components, to ensure they are inlined in all circumstances
* - Removed SetSystemClockPrescaler() macro, the clock_prescale_set() avr-libc macro has been corrected in recent avr-libc versions
* - Fixed incorrect/missing control status stage transfers on demos, bootloaders and applications (thanks to Nate Lawson)
* - The NO_CLEARSET_FEATURE_REQUEST compile time token has been renamed to FEATURELESS_CONTROL_ONLY_DEVICE, and its function expanded
* to also remove parts of the Get Status chapter 9 request to further reduce code usage
* - Makefile updated to include output giving the currently selected BOARD parameter value
* - Board Dataflash driver now allows for dataflash ICs which use different shifts for setting the current page/byte address (thanks
* to Kenneth Clubb)
* - Added DataflashManager_WriteBlocks_RAM() and DataflashManager_ReadBlocks_RAM() functions to the MassStorage demo, to allow for easy
* interfacing with a FAT library for dataflash file level access
* - Corrected CDC class bootloader to fix a few bugs, changed address counter to store x2 addresses for convenience
* - Fixed typos in the SPI driver SPI_SPEED_FCPU_DIV_64 and SPI_SPEED_FCPU_DIV_128 masks (thanks to Markus Zocholl)
* - Keyboard and Mouse device demos (normal, data interrupt and fully interrupt driven) combined into unified keyboard and mouse demos
* - Keyboard and Mouse host demos (normal and data interrupt driven) combined into unified keyboard and mouse demos
* - Removed AVRISP_Programmer project due to code quality concerns
* - Fixed CDC demo not sending an empty packet after each transfer to prevent the host from buffering incoming data
* - Fixed documentation typos and preprocessor checks relating to misspellings of the USE_RAM_DESCRIPTORS token (thanks to Ian Gregg)
* - Fixed USBTask.h not conditionally including HostChapter9.h only when USB_CAN_BE_HOST is defined (thanks to Ian Gregg)
* - Fixed incorrect ADC driver init register manipulation (thanks to Tobias)
* - Added new GenericHID device demo application
* - Fixed Still Image Host SImage_SendData() function not clearing the pipe bank after sending data
*
*
* \section Sec_ChangeLog090209 Version 090209
*
* - PWM timer mode in AudioOut demo changed to Fast PWM for speed
* - Updated Magstripe project to work with the latest hardware revision
* - Fixed library not responding to the BCERRI flag correctly in host mode, leading to device lockups
* - Fixed library handling Get Descriptor requests when not addressed as standard requests to the device or interface (thanks to
* Nate Lawson)
* - Fixed serious data corruption issue in MassStorage demo dataflash write routine
* - Added new NO_CLEARSET_FEATURE_REQUEST compile time token
* - USB task now restores previous global interrupt state after execution, rather than forcing global interrupts to be enabled
* - Fixed USB_DeviceEnumerationComplete event firing after each configuration change, rather than once after the initial configuration
* - Added ENDPOINT_DOUBLEBANK_SUPPORTED() macros to Endpoint.h, altered ENDPOINT_MAX_SIZE() to allow user to specify endpoint
* - ENDPOINT_MAX_ENDPOINTS changed to ENDPOINT_TOTAL_ENDPOINTS, PIPE_MAX_PIPES changed to PIPE_TOTAL_PIPES
* - Endpoint and Pipe non-control stream functions now ensure endpoint or pipe is ready before reading or writing
* - Changed Teensy bootloader to use a watchdog reset when exiting rather than a software jump
* - Fixed integer promotion error in MassStorage and MassStorageHost demos, corrupting read/write transfers
* - SPI_SendByte is now SPI_TransferByte, added new SPI_SendByte and SPI_ReceiveByte functions for fast one-way transfer
* - MassStorage demo changed to use new fast one-way SPI transfers to increase throughput
* - MassStorage handling of Mass Storage Reset class request improved
* - Altered MassStorage demo dataflash block read code for speed
* - Added USB_IsSuspended global flag
* - Simplified internal Dual Mode (OTG) USB library code to reduce code size
* - Extended stream timeout period to 100ms from 50ms
* - Mass Storage Host demo commands now all return an error code from the Pipe_Stream_RW_ErrorCodes_t enum
* - Added SubErrorCode parameter to the USB_DeviceEnumerationFailed event
* - VBUS drop interrupt now disabled during the manual-to-auto VBUS delivery handoff
* - Simplified low level backend so that device/host mode initialization uses the same code paths
* - Added workaround for faulty Mass Storage devices which do not implement the required GET_MAX_LUN request
* - Removed buggy Telnet application from the RNDIS demo
* - Moved Mass Storage class requests in the Mass Storage Host demo to wrapper functions in MassStoreCommands.c
* - Fixed incorrect SCSI command size value in the Request Sense command in MassStoreCommands.c
* - Added SetProtocol request to HID class non-parser Mouse and Keyboard demos to force devices to use the correct Boot Protocol
* - Added new "dfu" and "flip" programming targets to project makefiles
* - HID_PARSE_Sucessful enum member typo corrected to HID_PARSE_Successful
* - Changed COLLECTION item structures in the HID descriptor parser to include the collection's Usage Page value
* - Serial driver now sets Tx line as output, enables pullup on Rx line
* - Fixed smaller USB AVRs raising multiple connection and disconnection events when NO_LIMITED_CONTROLLER_CONNECT is disabled
* - Added HOST_DEVICE_SETTLE_DELAY_MS to give the host delay after a device is connected before it is enumerated
* - Fixed KeyboardHostWithParser demo linking against the wrong global variables
* - Completed doxygen documentation of remaining library bootloaders, demos and projects
* - Fixed incorrect bootloader start address in the TeensyHID bootloader
* - Added HWB button whole-disk ASCII dump functionality to MassStoreHost demo
* - Replaced printf_P(PSTR("%c"), {Variable}) calls with putchar() for speed and size savings
* - Serial driver now accepts baud rates over 16-bits in size, added double speed flag option
* - Fixed incorrect callback abort return value in Pipe.c
* - Added new flip-ee and dfu-ee makefile targets (courtesy of Opendous Inc.)
* - Removed reboot-on-disconnect code from the TeensyHID bootloader, caused problems on some systems
* - Fixed AudioOutput and AudioInput demos looping on the endpoint data, rather than processing a sample at a time and returning
* each time the task runs to allow for other tasks to execute
* - Added support for the Atmel ATAVRUSBRF01 board
* - Added AVRISP Programmer Project, courtesy of Opendous Inc.
* - Fixed CDC Host demo not searching through both CDC interfaces for endpoints
* - Fixed incorrect Product String descriptor length in the DFU class bootloader
*
*
* \section Sec_ChangeLog081224 Version 081224
*
* - MyUSB name changed to LUFA, the Lightweight USB Framework for AVRs
* - Fixed Mass Storage Host demo's MassStore_SendCommand() delay in the incorrect place
* - Fixed USBtoSerial demo not calling ReconfigureUSART() after a change in the line encoding
* - Fixed infinite loop in host mode Host-to-Device control transfers with data stages
* - HID report parser now supports devices with multiple reports in one interface via Report IDs
* - Fixed RZUSBSTICK board LED driver header incorrect macro definition order causing compile errors
* - Calling USB_Init() when the USB interface is already configured now forces a complete interface reset
* and re-enumeration - fixes MyUSB DFU bootloader not switching to app code correctly when soft reset used
* - Fixed "No newline at end of file" warning when stream callbacks are enabled
* - DFU bootloader now uses fixed signature bytes per device, rather than reading them out dynamically for size
* - Added new FIXED_CONTROL_ENDPOINT_SIZE and USE_SINGLE_DEVICE_CONFIGURATION switches to statically define certain values to
* reduce compiled binary size
* - Added new NO_LIMITED_CONTROLLER_CONNECT switch to prevent the library from trying to determine bus connection
* state from the suspension and wake up events on the smaller USB AVRs
* - Added summary of all library compile time tokens to the documentation
* - Added overview of the LUFA scheduler to the documentation
* - Removed MANUAL_PLL_CONTROL compile time token, replaced with a mask for the USB_Init() Options parameter
* - CDC bootloader now uses the correct non-far or far versions of the pgm_* functions depending on if RAMPZ is defined
* - Doxygen documentation now contains documentation on all the projects, bootloaders and most demos included with the library
* - CDC bootloader now runs user application when USB disconnected rather than waiting for a hard reset
* - MouseHostWithParser and KeyboardHostWithParser now support multiple-report devices
* - RNDIS demo can now close connections correctly using the new TCP_APP_CLOSECONNECTION() macro - used in Webserver
* - Fixed the DFU bootloader, no longer freezes up when certain files are programmed into an AVR, made reading/writing faster
* - Fixed mouse/joystick up/down movements reversed - HID mouse X/Y coordinates use a left-handed coordinate system, not a normal
* right-handed system
* - Added stub code to the CDC and USBtoSerial demos showing how to read and set the RS-232 handshake lines - not currently used in
* the demos, but the example code and supporting defines are now in place
* - Interrupts are now disabled when processing a control request in device mode, to avoid exceeding the strict control request
* timing requirements.
* - All demos now use a central StatusUpdate() function rather than direct calls to the board LED functions, so that the demos can
* easily be altered to show different LED combinations (or do something else entirely) as the demo's status changes
* - Removed LED commands from the CDC bootloader, unused by most AVR910 programming software
* - Fixed RNDIS demo ICMP ping requests echoing back incorrect data
* - Added DHCP server code to RNDIS demo, allowing for hands-free auto configuration on any PC
* - Fixed DFU bootloader PID value for the ATMEGA16U4 AVR
* - Endpoint and Pipe configuration functions now return an error code indicating success or failure
* - USB Reset in device mode now resets and disables all device endpoints
* - Added intermediate states to the host mode state machine, reducing the USB task blocking time to no more than 1ms explicitly per
* invocation when in host mode
* - Added support for the ATMEGA32U6 microcontroller
* - Added STATIC_ENDPOINT_CONFIGURATION compile time option, enabled in the bootloaders to minimize space usage
* - Removed redundant code from the USB device GetStatus() chapter 9 processing routine
* - Added new TeensyHID bootloader, compatible with the Teensy HID protocol (http://www.pjrc.com/teensy/)
* - Versions are now numbered by release dates, rather than arbitrary major/minor revision numbers
* - USB_RemoteWakeupEnabled is now correctly set and cleared by SetFeature and ClearFeature requests from the host
* - Changed prototype of GetDescriptor, so that it now returns the descriptor size (or zero if the descriptor doesn't exist)
* rather than passing the size back to the caller through a parameter and returning a boolean
*
*
* \section Sec_ChangeLog153 Version 1.5.3 - Released 2nd October, 2008
*
* - Fixed CDC bootloader using pgmspace macros for some descriptors inappropriately
* - Updated all Mouse and Keyboard device demos to include boot protocol support (now works in BIOS)
* - Renamed bootloader directories to remove spaces, which were causing build problems on several OSes
* - Removed serial number strings from all but the MassStore demo where it is required - users were not
* modifying the code to either omit the descriptor or use a unique serial per device causing problems
* when multiple units of the same device were plugged in at the same time
* - AudioOutput and AudioInput demos now correctly silence endpoints when not enabled by the host
* - Added KeyboardMouse demo (Keyboard and Mouse functionality combined into a single demo)
* - Added DriverStubs directory to house board level driver templates, to make MyUSB compatible custom board
* driver creation easier
* - Extended MassStorage demo to support multiple LUNs, 2 by default
* - Fixed incorrect device address mask, preventing the device from enumerating with addresses larger than 63
* - Fixed incorrect data direction mask in the GetStatus standard request, preventing it from being handled
* - Fixed incorrect GetStatus standard request for endpoints, now returns the endpoint STALL status correctly
* - Added in new USB_RemoteWakeupEnabled and USB_CurrentlySelfPowered flags rather than using fixed values
* - Added DualCDC demo to demonstrate the use of Interface Association Descriptors
* - Added pipe NAK detection and clearing API
* - Added pipe status change (NAK, STALL, etc.) interrupt API
* - Fixed MassStorageHost demo so that it no longer freezes randomly when issuing several commands in a row
* - Host demos configuration descriptor routines now return a unique error code when the returned data does
* not have a valid configuration descriptor header
* - Added Endpoint_WaitUntilReady() and Pipe_WaitUntilReady() functions
* - Stream functions now have software timeouts, timeout period can be set by the USB_STREAM_TIMEOUT_MS token
* - All demos now pass the USB.org automated Chapter 9 device compliance tests
* - All HID demos now pass the USB.org automated HID compliance tests
* - Polling interval of the interrupt endpoint in the CDC based demos changed to 0xFF to fix problems on Linux systems
* - Changed stream functions to accept a new callback function, with NO_STREAM_CALLBACKS used to disable all callbacks
* - Mass Storage demo dataflash management routines changed to use the endpoint stream functions
* - Added AVRStudio project files for each demo in addition to the existing Programmer's Notepad master project file
* - Re-added call to ReconfigureUSART() in USBtoSerial SetLineCoding request, so that baud rate changes
* are reflected in the hardware (change was previously lost)
*
*
* \section Sec_ChangeLog152 Version 1.5.2 - Released 31st July, 2008
*
* - Fixed SwapEndian_32() function in Common.h so that it now works correctly (wrong parameter types)
* - Updated RNDIS demo - notification endpoint is no longer blocking so that it works with faulty Linux RNDIS
* implementations (where the notification endpoint is ignored in favour of polling the control endpoint)
* - Fixed incorrect Vendor Description string return size in RNDIS demo for the OID_GEN_VENDOR_DESCRIPTION OID token
* - Added very basic TCP/IP stack and HTTP/TELNET servers to RNDIS demo
* - Fixed DFU bootloader exit causing programming software to complain about failed writes
* - Fixed DFU bootloader EEPROM programming mode wiping first flash page
* - Fixed Clear/Set Feature device standard request processing code (fixing MassStorage demo in the process)
* - Added support for the ATMEGA16U4 AVR microcontroller
* - Library licence changed from LGPLv3 to MIT license
*
*
* \section Sec_ChangeLog151 Version 1.5.1 - Released 31st July, 2008
*
* - Changed host demos to enable the host function task on the firing of the USB_DeviceEnumerationComplete event
* rather than the USB_DeviceAttached event
* - HID Usage Stack now forcefully cleared after an IN/OUT/FEATURE item has been completely processed to remove
* any referenced but not created usages
* - Changed USB_INT_DisableAllInterrupts() and USB_INT_ClearAllInterrupts(), USB_Host_GetNextDescriptorOfType(),
* USB_Host_GetNextDescriptorOfTypeBefore(), USB_Host_GetNextDescriptorOfTypeAfter() to normal functions (from inline)
* - Fixed USBtoSerial demo not sending data, only receiving
* - Fixed main makefile to make all by default, fixed MagStripe directory case to prevent case-sensitive path problems
* - ConfigDescriptor functions made normal, instead of static inline
* - Pipe/Endpoint *_Ignore_* functions changed to *_Discard_*, old names still present as aliases
* - Fixed ENDPOINT_MAX_SIZE define to be correct on limited USB controller AVRs
* - Changed endpoint and pipe size translation routines to use previous IF/ELSE IF cascade code, new algorithmic
* approach was buggy and caused problems
* - Bootloaders now compile with -fno-inline-small-functions option to reduce code size
* - Audio demos now use correct endpoint sizes for full and limited controller USB AVRs, double banking in all cases
* to be in line with the specification (isochronous endpoints MUST be double banked)
* - Added Interface Association descriptor to StdDescriptors.h, based on the relevant USB2.0 ECN
* - Fixed MIDI demo, corrected Audio Streaming descriptor to follow the MIDI-specific AS structure
* - Fixed HID class demo descriptors so that the HID interface's protocol is 0x00 (required for non-boot protocol HID
* devices) to prevent problems on hosts expecting the boot protocol functions to be supported
* - Added read/write control stream functions to Endpoint.h
* - Fixed AudioOut demo not setting port pins to inputs on USB disconnect properly
* - Added RNDISEthernet demo application
*
*
* \section Sec_ChangeLog150 Version 1.5.0 - Released 10 June, 2008
*
* - Fixed MIDI demo, now correctly waits for the endpoint to be ready between multiple note messages
* - Added CDC Host demo application
* - Added KeyboardFullInt demo application
* - Endpoint and Pipe creation routines now mask endpoint/pipe size with the size mask, to remove transaction
* size bits not required for the routines (improves compatibility with devices)
* - Fixed AudioInput demo - now correctly sends sampled audio to the host PC
* - Fixed AudioOutput demo once more -- apparently Windows requires endpoint packets to be >=192 bytes
* - Shrunk round-robbin scheduler code slightly via the use of struct pointers rather than array indexes
* - Fixed off-by-one error when determining if the Usage Stack is full inside the HID Report parser
* - Renamed Magstripe.h to MagstripeHW.h and moved driver out of the library and into the MagStripe demo folder
* - Added preprocessor checks to enable C linkage on the library components when used with a C++ compiler
* - Added Still Image Host demo application
* - The USB device task now restores the previously selected endpoint, allowing control requests to be transparently
* handled via interrupts while other endpoints are serviced through polling
* - Fixed device signature being sent in reverse order in the CDC bootloader
* - Host demos now have a separate ConfigDescriptor.c/.h file for configuration descriptor processing
* - HostWithParser demos now have a separate HIDReport.c/.h file for HID report processing and dumping
* - Removed non-mandatory commands from MassStorage demo to save space, fixed SENSE ResponseCode value
* - CDC demos now send empty packets after sending a full one to prevent buffering issues on the host
* - Updated demo descriptors to use VID/PID values donated by Atmel
* - Added DoxyGen documentation to the source files
* - Fixed Serial_IsCharReceived() definition, was previously reversed
* - Removed separate USB_Descriptor_Language_t descriptor, USB_Descriptor_String_t is used instead
* - Removed unused Device Qualifier descriptor structure
* - Renamed the USB_CreateEndpoints event to the more appropriate USB_ConfigurationChanged
* - Fixed MassStorageHost demo reading in the block data in reverse
* - Removed outdated typedefs in StdRequestType.h, superseded by the macro masks
* - Corrected OTG.h is now included when the AVR supports both Host and Device modes, for creating OTG products
* - USB_DeviceEnumerationComplete event is now also fired when in device mode and the host has finished its enumeration
* - Interrupt driven demos now properly restore previously selected endpoint when ISR is complete
* - USB_HOST_TIMEOUT_MS is now overridable in the user project makefile to a custom fixed timeout value
* - Renamed USB_Host_SOFGeneration_* macros to more friendly USB_Host_SuspendBus(), USB_Host_ResumeBus()
* and USB_Host_IsBusSuspended()
* - Renamed *_*_Is* macros to *_Is* to make all flag checking macros consistent, Pipe_SetInterruptFreq() is now
* Pipe_SetInterruptPeriod() to use the correct terminology
* - UnicodeString member of USB_Descriptor_String_t struct changed to an ordinary int array type, so that the GCC
* Unicode strings (prefixed with an L before the opening quotation mark) can be used instead of explicit arrays
* of ASCII characters
* - Fixed Endpoint/Pipes being configured incorrectly if the maximum endpoint/pipe size for the selected USB AVR
* model was given as the bank size
* - HID device demos now use a true raw array for the HID report descriptor rather than a struct wrapped array
* - Added VERSION_BCD() macro, fixed reported HID and USB version numbers in demo descriptors
* - Cleaned up GetDescriptor device chapter 9 handler function
* - Added GET_REPORT class specific request to HID demos to make them complaint to the HID class
* - Cleaned up setting of USB_IsInitialized and USB_IsConnected values to only when needed
* - Removed Atomic.c and ISRMacro.h; the library was already only compatible with recent avr-lib-c for other reasons
* - All demos and library functions now use USB standardized names for the USB data (bRequest, wLength, etc.)
* - Added USE_NONSTANDARD_DESCRIPTOR_NAMES token to switch back to the non-standard descriptor element names
*
*
* \section Sec_ChangeLog141 Version 1.4.1 - Released 5 May, 2008
*
* - Enhanced KeyboardWithParser demo, now prints out pressed alphanumeric characters like the standard demo
* - Fixed MassStorage demo, read/writes using non mode-10 commands now work correctly
* - Corrected version number in Version.h
*
*
* \section Sec_ChangeLog140 Version 1.4.0 - Released 5 May, 2008
*
* - Added HID Report Parser API to the library
* - Added Mouse and Keyboard host demo applications, using the new HID report parser engine
* - Added MouseFullInt demo, which demonstrates a fully interrupt (including control requests) mouse device
* - Fixed incorrect length value in the audio control descriptor of the AudioOutput and AudioInput demos
* - Added MIDI device demo application to the library
* - Fixed problem preventing USB devices from being resumed from a suspended state
* - Added new CDC class bootloader to the library, based on the AVR109 bootloader protocol
* - Added header to each demo application indicating the mode, class, subclass, standards used and supported speed
* - Functions expecting endpoint/pipe numbers are no longer automatically masked against ENDPOINT_EPNUM_MASK or
* PIPE_PIPENUM_MASK - this should be manually added to code which requires it
* - Fixed DFU class bootloader - corrected frequency of flash page writes, greatly reducing programming time
* - Renamed AVR_HOST_GetDeviceConfigDescriptor() to USB_Host_GetDeviceConfigDescriptor() and AVR_HOST_GetNextDescriptor()
* to USB_Host_GetNextDescriptor()
* - Added new USB_Host_GetNextDescriptorOfTypeBefore() and USB_Host_GetNextDescriptorOfTypeAfter() routines
* - Moved configuration descriptor routines to MyUSB/Drivers/USB/Class/, new accompanying ConfigDescriptors.c file
* - Added new configuration descriptor comparator API for more powerful descriptor parsing, updated host demos to use the
* new comparator API
* - Fixed MassStorageHost demo capacity printout, and changed data read/write mode from little-endian to the correct
* big-endian for SCSI devices
* - Fixed macro/function naming consistency; USB_HOST is now USB_Host, USB_DEV is now USB_Device
* - Added better error reporting to host demos
* - Added 10 microsecond delay after addressing devices in host mode, to prevent control stalls
*
*
* \section Sec_ChangeLog132 Version 1.3.2 - Released April 1st, 2008
*
* - Added call to ReconfigureUSART() in USBtoSerial SetLineCoding request, so that baud rate changes
* are reflected in the hardware
* - Fixed CDC and USBtoSerial demos - Stream commands do not work for control endpoints, and the
* GetLineCoding request had an incorrect RequestType mask preventing it from being processed
* - Improved reliability of the USBtoSerial demo, adding a busy wait while the buffer is full
* - Device control endpoint size is now determined from the device's descriptors rather than being fixed
* - Separated out SPI code into new SPI driver in AT90USBXXX driver directory
* - Bootloader now returns correct PID for the selected USB AVR model, not just the AT90USB128X PID
* - Added support for the RZUSBSTICK board
* - Bicolour driver removed in favour of generic LEDs driver
* - Added support for the ATMEGA32U4 AVR
* - Added MANUAL_PLL_CONTROL compile time option to prevent the USB library from manipulating the PLL
*
*
* \section Sec_ChangeLog131 Version 1.3.1 - Released March 19th 2008
*
* - Fixed USB to Serial demo - class value in the descriptors was incorrect
* - Control endpoint size changed from 64 bytes to 8 bytes to save on USB FIFO RAM and to allow low
* speed mode devices to enumerate properly
* - USB to Serial demo data endpoints changed to dual-banked 16 byte to allow the demo to work
* on USB AVRs with limited USB FIFO RAM
* - Changed demo endpoint numbers to use endpoints 3 and 4 for double banking, to allow limited
* USB device controller AVRs (AT90USB162, AT90USB82) to function correctly
* - Updated Audio Out demo to use timer 1 for AVRs lacking a timer 3 for the PWM output
* - Fixed incorrect USB_DEV_OPT_HIGHSPEED entry in the Mass Storage device demo makefile
* - Optimized Mass Storage demo for a little extra transfer speed
* - Added LED indicators to the Keyboard demo for Caps Lock, Num Lock and Scroll Lock
* - Added Endpoint_Read_Stream, Endpoint_Write_Stream, Pipe_Read_Stream and Pipe_Write_Stream functions
* (including Big and Little Endian variants)
* - Made Dataflash functions inline for speed, removed now empty Dataflash.c driver file
* - Added new SetSystemClockPrescaler() macro (thanks to Joerg Wunsch)
* - Fixed Endpoint_ClearStall() to function correctly on full USB controller AVRs (AT90USBXXX6/7)
* - Endpoint_Setup_In_Clear() and Endpoint_Setup_Out_Clear() no longer set FIFOCON, in line with the
* directives in the datasheet
* - Fixed PLL prescaler defines for all AVR models and frequencies
* - Fixed ENDPOINT_INT_IN and ENDPOINT_INT_OUT definitions
* - Added interrupt driven keyboard and mouse device demos
* - Combined USB_Device_ClearFeature and USB_Device_SetFeature requests into a single routine for code
* size savings
* - Added missing Pipe_GetCurrentPipe() macro to Pipe.h
*
*
* \section Sec_ChangeLog130 Version 1.3.0 - Released March 7th 2008
*
* - Unnecessary control endpoint config removed from device mode
* - Fixed device standard request interpreter accidentally processing some class-specific requests
* - Added USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS compile time options to instruct the library
* to use descriptors stored in RAM or EEPROM rather than flash memory
* - All demos now disable watchdog on startup, in case it has been enabled by fuses or the bootloader
* - USB_DEV_OPT_LOWSPEED option now works correctly
* - Added ability to set the USB options statically for a binary size reduction via the USE_STATIC_OPTIONS
* compile time define
* - USB_Init no longer takes a Mode parameter if compiled for a USB device with no host mode option, or
* if forced to a particular mode via the USB_HOST_ONLY or USB_DEVICE_ONLY compile time options
* - USB_Init no longer takes an Options parameter if options statically configured by USE_STATIC_OPTIONS
* - Endpoint_Ignore_* and Pipe_Ignore_* made smaller by making the dummy variable non-volatile so that the
* compiler can throw away the result more efficiently
* - Added in an optional GroupID value to each scheduler entry, so that groups of tasks can once again be
* controlled by the new Scheduler_SetGroupTaskMode() routine
* - Added support for AT90USB162 and AT90USB82 AVR models
* - Added support for the STK525 and STK526 boards
* - Added support for custom board drivers to be supplied by selecting the board type as BOARD_USER, and
* placing board drivers in {Application Directory}/Board/
* - PLL is now stopped and USB clock is frozen when detached from host in device mode, to save power
* - Joystick defines are now in synch with the schematics - orientation will be rotated for the USBKEY
* - Fixed USB_DEV_IsUSBSuspended() - now checks the correct register
* - Fixed data transfers to devices when in host mode
* - Renamed USB_DEV_OPT_HIGHSPEED to USB_DEV_OPT_FULLSPEED and USB_HOST_IsDeviceHighSpeed() to
* USB_HOST_IsDeviceFullSpeed() to be in line with the official USB speed names (to avoid confusion with
* the real high speed mode, which is unavailable on the USB AVRs)
*
*
* \section Sec_ChangeLog120 Version 1.2.0 - Released February 4th, 2008
*
* - Added USB_DeviceEnumerationComplete event for host mode
* - Added new Scheduler_Init routine to preprepare the scheduler, so that tasks can be started and
* stopped before the scheduler has been started (via Scheduler_Start)
* - Connection events in both Device and Host mode are now interrupt-driven, allowing the USB management
* task to be stopped when the USB is not connected to a host or device
* - All demos updated to stop the USB task when not in use via the appropriate USB events
* - Mass Storage Host demo application updated to function correctly with all USB flash disks
* - Mass Storage Host demo application now prints out the capacity and number of LUNs in the attached
* device, and prints the first block as hexadecimal numbers rather than ASCII characters
* - Endpoint and Pipe clearing routines now clear the Endpoint/Pipe interrupt and status flags
* - Shifted error handling code in the host enum state machine to a single block, to reduce code complexity
* - Added in DESCRIPTOR_TYPE, DESCRIPTOR_SIZE and DESCRIPTOR_CAST macros to make config descriptor processing
* clearer in USB hosts and DESCRIPTOR_ADDRESS for convenience in USB devices
* - Added in alloca macro to common.h, in case the user is using an old version of avr-lib-c missing the macro
*
*
* \section Sec_ChangeLog130 Version 1.1.0 - Released January 25th 2008
*
* - Fixed DCONNI interrupt being enabled accidentally after a USB reset
* - Fixed DDISCI interrupt not being disabled when a device is not connected
* - Added workaround for powerless pullup devices causing false disconnect interrupts
* - Added USB_DeviceEnumerationFailed event for Host mode
* - AVR_HOST_GetDeviceConfigDescriptor routine no longer modifies ConfigSizePtr if a valid buffer
* pointer is passed
* - Added ALLOCABLE_BYTES to DynAlloc, and added code to make the size of key storage variables
* dependant on size of memory parameters passed in via the user project's makefile
* - Fixed incorrect device reset routine being called in USBTask
* - Devices which do not connect within the standard 300mS are now supported
* - Removed incorrect ATTR_PURE from Scheduler_SetTaskMode(), which was preventing tasks from being
* started/stopped, as well as USB_InitTaskPointer(), which was breaking dual device/host USB projects
* - Changed scheduler to use the task name rather than IDs for setting the task mode, eliminating the
* need to have a task ID list
* - ID transistion interrupt now raises the appropriate device/host disconnect event if device attached
* - Fixed double VBUS change (and VBUS -) event when detatching in device mode
* - Added ability to disable ANSI terminal codes by the defining of DISABLE_TERMINAL_CODES in makefile
* - Removed return from ConfigurePipe and ConfigureEndpoint functions - use Pipe_IsConfigured() and
* Endpoint_IsConfigured() after calling the config functions to determine success
*/