| 0,0 → 1,134 |
|---|
| This file documents changes in the firmware-only USB driver for atmel's AVR |
| microcontrollers. New entries are always appended to the end of the file. |
| Scroll down to the bottom to see the most recent changes. |
| |
| 2005-04-01: |
| - Implemented endpoint 1 as interrupt-in endpoint. |
| - Moved all configuration options to usbconfig.h which is not part of the |
| driver. |
| - Changed interface for usbVendorSetup(). |
| - Fixed compatibility with ATMega8 device. |
| - Various minor optimizations. |
| |
| 2005-04-11: |
| - Changed interface to application: Use usbFunctionSetup(), usbFunctionRead() |
| and usbFunctionWrite() now. Added configuration options to choose which |
| of these functions to compile in. |
| - Assembler module delivers receive data non-inverted now. |
| - Made register and bit names compatible with more AVR devices. |
| |
| 2005-05-03: |
| - Allow address of usbRxBuf on any memory page as long as the buffer does |
| not cross 256 byte page boundaries. |
| - Better device compatibility: works with Mega88 now. |
| - Code optimization in debugging module. |
| - Documentation updates. |
| |
| 2006-01-02: |
| - Added (free) default Vendor- and Product-IDs bought from voti.nl. |
| - Added USBID-License.txt file which defines the rules for using the free |
| shared VID/PID pair. |
| - Added Readme.txt to the usbdrv directory which clarifies administrative |
| issues. |
| |
| 2006-01-25: |
| - Added "configured state" to become more standards compliant. |
| - Added "HALT" state for interrupt endpoint. |
| - Driver passes the "USB Command Verifier" test from usb.org now. |
| - Made "serial number" a configuration option. |
| - Minor optimizations, we now recommend compiler option "-Os" for best |
| results. |
| - Added a version number to usbdrv.h |
| |
| 2006-02-03: |
| - New configuration variable USB_BUFFER_SECTION for the memory section where |
| the USB rx buffer will go. This defaults to ".bss" if not defined. Since |
| this buffer MUST NOT cross 256 byte pages (not even touch a page at the |
| end), the user may want to pass a linker option similar to |
| "-Wl,--section-start=.mybuffer=0x800060". |
| - Provide structure for usbRequest_t. |
| - New defines for USB constants. |
| - Prepared for HID implementations. |
| - Increased data size limit for interrupt transfers to 8 bytes. |
| - New macro usbInterruptIsReady() to query interrupt buffer state. |
| |
| 2006-02-18: |
| - Ensure that the data token which is sent as an ack to an OUT transfer is |
| always zero sized. This fixes a bug where the host reports an error after |
| sending an out transfer to the device, although all data arrived at the |
| device. |
| - Updated docs in usbdrv.h to reflect changed API in usbFunctionWrite(). |
| |
| * Release 2006-02-20 |
| |
| - Give a compiler warning when compiling with debugging turned on. |
| - Added Oleg Semyonov's changes for IAR-cc compatibility. |
| - Added new (optional) functions usbDeviceConnect() and usbDeviceDisconnect() |
| (also thanks to Oleg!). |
| - Rearranged tests in usbPoll() to save a couple of instructions in the most |
| likely case that no actions are pending. |
| - We need a delay between the SET ADDRESS request until the new address |
| becomes active. This delay was handled in usbPoll() until now. Since the |
| spec says that the delay must not exceed 2ms, previous versions required |
| aggressive polling during the enumeration phase. We have now moved the |
| handling of the delay into the interrupt routine. |
| - We must not reply with NAK to a SETUP transaction. We can only achieve this |
| by making sure that the rx buffer is empty when SETUP tokens are expected. |
| We therefore don't pass zero sized data packets from the status phase of |
| a transfer to usbPoll(). This change MAY cause troubles if you rely on |
| receiving a less than 8 bytes long packet in usbFunctionWrite() to |
| identify the end of a transfer. usbFunctionWrite() will NEVER be called |
| with a zero length. |
| |
| * Release 2006-03-14 |
| |
| - Improved IAR C support: tiny memory model, more devices |
| - Added template usbconfig.h file under the name usbconfig-prototype.h |
| |
| * Release 2006-03-26 |
| |
| - Added provision for one more interrupt-in endpoint (endpoint 3). |
| - Added provision for one interrupt-out endpoint (endpoint 1). |
| - Added flowcontrol macros for USB. |
| - Added provision for custom configuration descriptor. |
| - Allow ANY two port bits for D+ and D-. |
| - Merged (optional) receive endpoint number into global usbRxToken variable. |
| - Use USB_CFG_IOPORTNAME instead of USB_CFG_IOPORT. We now construct the |
| variable name from the single port letter instead of computing the address |
| of related ports from the output-port address. |
| |
| * Release 2006-06-26 |
| |
| - Updated documentation in usbdrv.h and usbconfig-prototype.h to reflect the |
| new features. |
| - Removed "#warning" directives because IAR does not understand them. Use |
| unused static variables instead to generate a warning. |
| - Do not include <avr/io.h> when compiling with IAR. |
| - Introduced USB_CFG_DESCR_PROPS_* in usbconfig.h to configure how each |
| USB descriptor should be handled. It is now possible to provide descriptor |
| data in Flash, RAM or dynamically at runtime. |
| - STALL is now a status in usbTxLen* instead of a message. We can now conform |
| to the spec and leave the stall status pending until it is cleared. |
| - Made usbTxPacketCnt1 and usbTxPacketCnt3 public. This allows the |
| application code to reset data toggling on interrupt pipes. |
| |
| * Release 2006-07-18 |
| |
| - Added an #if !defined __ASSEMBLER__ to the warning in usbdrv.h. This fixes |
| an assembler error. |
| - usbDeviceDisconnect() takes pull-up resistor to high impedance now. |
| |
| * Release 2007-02-01 |
| |
| - Merged in some code size improvements from usbtiny (thanks to Dick |
| Streefland for these optimizations!) |
| - Special alignment requirement for usbRxBuf not required any more. Thanks |
| again to Dick Streefland for this hint! |
| - Reverted to "#warning" instead of unused static variables -- new versions |
| of IAR CC should handle this directive. |
| - Changed Open Source license to GNU GPL v2 in order to make linking against |
| other free libraries easier. We no longer require publication of the |
| circuit diagrams, but we STRONGLY encourage it. If you improve the driver |
| itself, PLEASE grant us a royalty free license to your changes for our |
| commercial license. |
| |