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254 lines
19 KiB
254 lines
19 KiB
/** \file
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*
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* This file contains special DoxyGen information for the generation of the main page and other special
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* documentation pages. It is not a project source file.
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*/
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/** \page Page_Migration Migrating from Older Versions
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*
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* Below is migration information for updating existing projects based on previous versions of the LUFA library
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* to the next version released. It does not indicate all new additions to the library in each version change, only
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* areas relevant to making older projects compatible with the API changes of each new release.
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*
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* \section Sec_MigrationXXXXXX Migrating from 090209 to XXXXXX
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*
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* <b>All</b>
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* - LUFA projects must now give the raw input clock frequency (before any prescaling) as a compile time constant "F_CLOCK",
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* defined in the project makefile and passed to the compiler via the -D switch.
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* - The makefile EEPROM programming targets for FLIP and dfu-programmer no longer program in the FLASH data in addition to the
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* EEPROM data into the device. If both are to be programmed, both the EEPROM and FLASH programming targets must be called.
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* - As the avr-libc macro has been corrected in recent avr-libc distributions, the SetSystemClockPrescaler() macro has been removed.
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* Include <avr/power.h> and call clock_prescale_set(clock_div_1); instead on recent avr-libc distributions.
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*
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* <b>Library Demos</b>
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* - The USBtoSerial demo now discards all data when not connected to a host, rather than buffering it for later transmission.
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* - Most demos, bootloaders and applications have had their control request handling code corrected, to properly send the status
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* stage in all handled requests. If you are using code based off one of the library demos, bootloaders or applications, you should
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* update to the latest revisions.
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*
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* <b>Non-USB Library Components</b>
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* - The ATTR_ALWAYSINLINE function attribute macro has been renamed to ATTR_ALWAYS_INLINE.
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* - Custom board Dataflash drivers now require the implementation of Dataflash_SelectChipFromPage() and Dataflash_SendAddressBytes().
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*
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* <b>Device Mode</b>
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* - The NO_CLEARSET_FEATURE_REQUEST compile time token has been renamed to NO_FEATURELESS_CONTROL_ONLY_DEVICE, and its function expanded
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* to also remove parts of the Get Status chapter 9 request to further reduce code usage. On all applications currently using the
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* NO_CLEARSET_FEATURE_REQUEST compile time token, it can be replaced with the NO_FEATURELESS_CONTROL_ONLY_DEVICE token with no further
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* modifications required.
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*
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* \section Sec_Migration090209 Migrating from 081217 to 090209
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*
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* <b>Device Mode</b>
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* - The ENDPOINT_MAX_ENDPOINTS constant has been renamed to the more appropriate name of ENDPOINT_TOTAL_ENDPOINTS.
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* - The USB_STREAM_TIMEOUT_MS stream timeout default period has been extended to 100ms. This can be overridden in the user
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* makefile if desired to restore the previous 50ms timeout.
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*
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* <b>Host Mode</b>
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* - The PIPE_MAX_ENDPOINTS constant has been renamed to the more appropriate name of PIPE_TOTAL_ENDPOINTS.
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* - The USB_STREAM_TIMEOUT_MS stream timeout default period has been extended to 100ms. This can be overridden in the user
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* makefile if desired to restore the previous 50ms timeout.
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* - The USB_DeviceEnumerationFailed event now contains a second "SubErrorCode" parameter, giving the error code of the function
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* which failed.
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* - The HID_PARSE_Sucessful enum member constant has been corrected to HID_PARSE_Successful.
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*
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* <b>Non-USB Library Components</b>
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* - The previous SPI_SendByte() functionality is now located in SPI_TransferByte(). SPI_SendByte() now discards the return byte
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* for speed, to compliment the new SPI_ReceiveByte() function. If two-way SPI transfers are required, calls to SPI_SendByte()
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* should be changed to SPI_TransferByte().
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* - The serial driver now sets the Tx line as an output explicitly, and enables the pullup of the Rx line.
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* - The Serial_Init() and SerialStream_Init() functions now take a second DoubleSpeed parameter, which indicates if the USART
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* should be initialized in double speed mode - useful in some circumstances for attaining baud rates not usually possible at
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* the given AVR clock speed.
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*
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* <b>Library Demos</b>
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* - Most library demos have been enhanced and/or had errors corrected. All users of all demos should upgrade their codebase to
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* the latest demo versions.
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*
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* \section Sec_Migration171208 Migrating from V1.5.3 to 081217
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*
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* <b>All</b>
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* - The MyUSB project name has been changed to LUFA (Lightweight Framework for USB AVRs). All references to MyUSB, including macro names,
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* have been changed to LUFA.
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*
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* <b>Library Demos</b>
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* - The ReconfigureUSART() routine in the USBtoSerial demo was not being called after new line encoding
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* parameters were set by the host. Projects built on the USBtoSerial code should update to the latest version.
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* - The HID Parser now supports multiple report (on a single endpoint) HID devices. The MouseHostWithParser and
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* KeyboardHostWithPaser demos use the updated API functions to function correctly on such devices. Projects
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* built on either "WithParser" demo should update to the latest code.
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* - The RNDIS demo TCP stack has been modified so that connections can be properly closed. It is still not
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* recommended that the MyUSB RNDIS demo TCP/IP stack be used for anything other than demonstration purposes,
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* as it is neither a full nor a standards compliant implementation.
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*
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* <b>Non-USB Library Components</b>
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* - The Serial_IsCharRecieved() macro has been changed to the correct spelling of Serial_IsCharReceived() in Serial.h.
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*
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* <b>Device Mode</b>
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* - The MANUAL_PLL_CONTROL compile time token has been removed, and replaced with a USB_OPT_MANUAL_PLL mask
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* to be used in the Options parameter of the USB_Init() function.
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* - Calling USB_Init() now forces a complete USB interface reset and enumeration, even if the USB interface is
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* currently initialized.
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* - Interrupts are now disabled when processing control requests, to avoid problems with interrupts causing the library
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* or user request processing code to exceed the strict USB timing requirements on control transfers.
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* - The USB Reset event now resets and disables all device endpoints. If user code depends on endpoints remaining configured
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* after a Reset event, it should be altered to explicitly re-initialize all user endpoints.
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* - The prototype for the GetDescriptor function has been changed, as the return value was redundant. The function now
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* returns the size of the descriptor, rather than passing it back via a parameter, or returns NO_DESCRIPTOR if the specified
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* descriptor does not exist.
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* - The NO_DESCRIPTOR_STRING macro has been renamed NO_DESCRIPTOR, and is now also used as a possible return value for the
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* GetDescriptor function.
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*
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* <b>Host Mode</b>
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* - The MANUAL_PLL_CONTROL compile time token has been removed, and replaced with a USB_OPT_MANUAL_PLL mask
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* to be used in the Options parameter of the USB_Init() function.
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* - The HID report parser now supports multiple Report IDs. The HID report parser GetReportItemInfo() and
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* SetReportItemInfo() routines now return a boolean, set if the requested report item was located in the
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* current report. If sending a report to a multi-report device, the first byte of the report is automatically
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* set to the report ID of the given report item.
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* - Calling USB_Init() now forces a complete USB interface reset and enumeration, even if the USB interface is
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* currently initialized.
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*
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*
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* \section Sec_Migration152 Migrating from V1.5.2 to V1.5.3
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*
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* <b>Library Demos</b>
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* - Previously, all demos contained a serial number string descriptor, filled with all zeros. A serial number
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* string is required in Mass Storage devices, or devices which are to retain settings when moved between
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* ports on a machine. As people were not changing the serial number value, this was causing conflicts and so
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* the serial number descriptor has been removed from all but the Mass Storage demo, which requires it.
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* - The AudioOut and AudioIn demos did not previously silence their endpoints when the host has deactivated
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* them. Projects built upon either demo should upgrade to the latest code.
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* - The FEATURE_ENDPOINT macro has been renamed FEATURE_ENDPOINT_HALT, and is now correctly documented.
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* - The MassStoreHost demo contained errors which caused it to lock up randomly on certain devices. Projects built
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* on the MassStoreDemo code should update to the latest version.
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* - The Interrupt type endpoint in the CDC based demos previously had a polling interval of 0x02, which caused
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* problems on some Linux systems. This has been changed to 0xFF, projects built on the CDC demos should upgrade
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* to the latest code.
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* - The HID keyboard and mouse demos were not previously boot mode compatible. To enable boot mode support, projects
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* built on the keyboard or mouse demos (or derivatives) should upgrade to the latest code.
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* - The Mass Storage demo was not previously standards compliant. Projects built on the Mass Storage demo should
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* upgrade to the latest code.
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* - The USART was not being reconfigured after the host sent new encoding settings in the USBtoSerial demo. This was
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* previously discovered and fixed, but the change was lost. Projects built on the USBtoSerial demo should update
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* to the latest code.
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*
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* <b>Device Mode</b>
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* - The endpoint non-control stream functions now have a default timeout of 50ms between packets in the stream.
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* If this timeout is exceeded, the function returns the new ENDPOINT_RWSTREAM_ERROR_Timeout error value. The
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* timeout value can be overridden by defining the USB_STREAM_TIMEOUT_MS in the project makefile to the desired
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* timeout duration in ms.
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* - Rather than returning fixed values, the flags indicating if the device has Remote Wakeup currently enabled
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* and/or is self-powered are now accessed and set through the new USB_RemoteWakeupEnabled and
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* USB_CurrentlySelfPowered macros. See the DevChapter9.h documentation for more details.
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* - All endpoint stream functions now require an extra Callback function parameter. Existing code may be updated
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* to either supply NO_STREAM_CALLBACK as the extra parameter, or disable stream callbacks altogether by pasing
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* the token NO_STREAM_CALLBACKS to the compiler using the -D switch.
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*
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* <b>Host Mode</b>
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* - The pipe non-control stream functions now have a default timeout of 50ms between packets in the stream.
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* If this timeout is exceeded, the function returns the new PIPE_RWSTREAM_ERROR_Timeout error value. The
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* timeout value can be overridden by defining the USB_STREAM_TIMEOUT_MS in the project makefile to the desired
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* timeout duration in ms.
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* - CollectionPath_t has been renamed to HID_CollectionPath_t to be more in line with the other HID parser structures.
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* - All pipe stream functions now require an extra Callback function parameter. Existing code may be updated
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* to either supply NO_STREAM_CALLBACK as the extra parameter, or disable stream callbacks altogether by pasing
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* the token NO_STREAM_CALLBACKS to the compiler using the -D switch.
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*
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*
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* \section Sec_Migration151 Migrating from V1.5.1 to V1.5.2
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*
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* <b>Library Demos</b>
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* - The RNDIS demo application has been updated so that it is functional on Linux under earlier implementations
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* of the RNDIS specification, which had non-standard behaviour. Projects built upon the demo should upgrade
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* to the latest code.
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* - The DFU class bootloader has had several bugs corrected in this release. It is recommended that where
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* possible any existing devices upgrade to the latest bootloader code.
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*
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*
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* \section Sec_Migration150 Migrating from V1.5.0 to V1.5.1
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*
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* <b>Library Demos</b>
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* - The USBtoSerial demo was broken in the 1.5.0 release, due to incorrect register polling in place of the
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* global "Transmitting" flag. The change has been reverted in this release. Projects built upon the demo
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* should upgrade to the latest code.
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* - The HID class demos did not implement the mandatory GetReport HID class request. Projects built upon the HID
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* demos should upgrade to the latest code.
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* - The HID class demos incorrectly reported themselves as boot-protocol enabled HID devices in their descriptors.
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* Projects built upon the HID demos should upgrade to the latest code.
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* - The MIDI device demo had incorrect AudioStreaming interface descriptors. Projects built upon the MIDI demo
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* should upgrade to the latest code.
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* - The AudioOut demo did not correctly tristate the speaker pins when USB was disconnected, wasting power.
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* Projects built upon the AudioOut demo should upgrade to the latest code.
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*
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*
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* \section Sec_Migration141 Migrating from V1.4.1 to V1.5.0
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*
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* <b>Library Demos</b>
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* - Previous versions of the library demos had incorrectly encoded BCD version numbers in the descriptors. To
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* avoid such mistakes in the future, the VERSION_BCD macro has been added to StdDescriptors.h. Existing
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* projects should at least manually correct the BCD version numbers, or preferably update the descriptors to
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* encode the version number in BCD format using the new macro.
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* - The mandatory GetReport class-specific request was accidentally ommitted from previous versions of the demos
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* based on the Human Interface Device (HID) class. This has been corrected, and any user projects based on the
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* HID demos should also be updated accordingly.
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* - The CDC demos now correctly send an empty packet directly after a full packet, to end the transmission.
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* Failure to do this on projects which always or frequently send full packets will cause buffering issues on
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* the host OS. All CDC user projects are advised to update their transmission routines in the same manner as
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* the library CDC demos.
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* - The previous interrupt-driven Endpoint/Pipe demos did not properly save and restore the currently selected
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* Endpoint/Pipe when the ISR fired. This has been corrected - user projects based on the interrupt driven
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* demos should also update to properly save and restore the selected Endpoint/Pipe.
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*
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* <b>Non-USB Library Components</b>
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* - The Atomic.h and ISRMacro.h header files in MyUSB/Common have been removed, as the library is now only
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* compatible with avr-libc library versions newer than the time before the functionality of the deleted
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* headers was available.
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*
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* <b>Device Mode</b>
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* - The GetDescriptor function (see StdDescriptors.h) now has a new prototype, with altered parameter names and
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* functions. Existing projects will need to update the GetDescriptor implementation to reflect the new API.
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* The previously split Type and Index parameters are now passed as the original wValue parameter to the
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* function, to make way for the USB specification wIndex parameter which is <i>not</i> the same as the
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* previous Index parameter.
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* - The USB_UnhandledControlPacket event (see Events.h) now has new parameter names, to be in line with the
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* official USB specification. Existing code will need to be altered to use the new parameter names.
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* - The USB_CreateEndpoints event (see Events.h) has been renamed to USB_ConfigurationChanged, which is more
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* appropriate. It fires in an identical manner to the previously named event, thus the only change to be made
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* is the event name itself in the user project.
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* - The USB_Descriptor_Language_t structure no longer exists in StdDescriptors.h, as this was a
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* psudo-descriptor modelled on the string descriptor. It is replaced by the true USB_Descriptor_String_t type
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* descriptor as indicated in the USB specification, thus all device code must be updated accordingly.
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* - The names of several Endpoint macros have been changed to be more consistant with the rest of the library,
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* with no implementation changes. This means that existing code can be altered to use the new macro names
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* with no other considerations required. See Endpoint.h for the new macro names.
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* - The previous version of the MassStorage demo had an incorrect value in the SCSI_Request_Sense_Response_t
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* strucuture named SenseData in SCSI.c which caused some problems with some hosts. User projects based on this
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* demo should correct the structure value to maintain compatibility across multiple OS platforms.
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* - By default, the descriptor structures use the official USB specification names for the elements. Previous
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* versions of the library used non-standard (but more verbose) names, which are still usable in the current
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* and future releases when the correct compile time option is enabled. See the StdDescriptors.h file
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* documentation for more details.
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*
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* <b>Host Mode</b>
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* - The USB_Host_Request_Header_t structure in HostChapter9.h (used for issuing control requests) has had its
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* members renamed to the official USB specification names for requests. Existing code will need to be updated
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* to use the new names.
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* - The names of several Pipe macros have been changed to be more consistant with the rest of the library,
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* with no implementation changes. This means that existing code can be altered to use the new macro names
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* with no other considerations required. See Pipe.h for the new macro names.
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* - By default, the descriptor structures use the official USB specification names for the elements. Previous
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* versions of the library used non-standard (but more verbose) names, which are still usable in the current
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* and future releases when the correct compile time option is enabled. See the StdDescriptors.h file
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* documentation for more details.
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* - The names of the macros in Host.h for controlling the SOF generation have been renamed, see the Host.h
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* module documentation for the new macro names.
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*
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* <b>Dual Role Mode</b>
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* - The OTG.h header file has been corrected so that the macros now perform their stated functions. Any existing
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* projects using custom headers to fix the broken OTG header should now be altered to once again use the OTG
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* header inside the library.
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* - The USB_DeviceEnumerationComplete event (see Events.h) now also fires in Device mode, when the host has
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* finished enumerating the device. Projects relying on the event only firing in Host mode should be updated
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* so that the event action only ocurrs when the USB_Mode global is set to USB_MODE_HOST.
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*/
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