0,0 → 1,308 |
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. |
|
* Release 2007-03-29 |
|
- New configuration option "USB_PUBLIC" in usbconfig.h. |
- Set USB version number to 1.10 instead of 1.01. |
- Code used USB_CFG_DESCR_PROPS_STRING_DEVICE and |
USB_CFG_DESCR_PROPS_STRING_PRODUCT inconsistently. Changed all occurrences |
to USB_CFG_DESCR_PROPS_STRING_PRODUCT. |
- New assembler module for 16.5 MHz RC oscillator clock with PLL in receiver |
code. |
- New assembler module for 16 MHz crystal. |
- usbdrvasm.S contains common code only, clock-specific parts have been moved |
to usbdrvasm12.S, usbdrvasm16.S and usbdrvasm165.S respectively. |
|
* Release 2007-06-25 |
|
- 16 MHz module: Do SE0 check in stuffed bits as well. |
|
* Release 2007-07-07 |
|
- Define hi8(x) for IAR compiler to limit result to 8 bits. This is necessary |
for negative values. |
- Added 15 MHz module contributed by V. Bosch. |
- Interrupt vector name can now be configured. This is useful if somebody |
wants to use a different hardware interrupt than INT0. |
|
* Release 2007-08-07 |
|
- Moved handleIn3 routine in usbdrvasm16.S so that relative jump range is |
not exceeded. |
- More config options: USB_RX_USER_HOOK(), USB_INITIAL_DATATOKEN, |
USB_COUNT_SOF |
- USB_INTR_PENDING can now be a memory address, not just I/O |
|
* Release 2007-09-19 |
|
- Split out common parts of assembler modules into separate include file |
- Made endpoint numbers configurable so that given interface definitions |
can be matched. See USB_CFG_EP3_NUMBER in usbconfig-prototype.h. |
- Store endpoint number for interrupt/bulk-out so that usbFunctionWriteOut() |
can handle any number of endpoints. |
- Define usbDeviceConnect() and usbDeviceDisconnect() even if no |
USB_CFG_PULLUP_IOPORTNAME is defined. Directly set D+ and D- to 0 in this |
case. |
|
* Release 2007-12-01 |
|
- Optimize usbDeviceConnect() and usbDeviceDisconnect() for less code size |
when USB_CFG_PULLUP_IOPORTNAME is not defined. |
|
* Release 2007-12-13 |
|
- Renamed all include-only assembler modules from *.S to *.inc so that |
people don't add them to their project sources. |
- Distribute leap bits in tx loop more evenly for 16 MHz module. |
- Use "macro" and "endm" instead of ".macro" and ".endm" for IAR |
- Avoid compiler warnings for constant expr range by casting some values in |
USB descriptors. |
|
* Release 2008-01-21 |
|
- Fixed bug in 15 and 16 MHz module where the new address set with |
SET_ADDRESS was already accepted at the next NAK or ACK we send, not at |
the next data packet we send. This caused problems when the host polled |
too fast. Thanks to Alexander Neumann for his help and patience debugging |
this issue! |
|
* Release 2008-02-05 |
|
- Fixed bug in 16.5 MHz module where a register was used in the interrupt |
handler before it was pushed. This bug was introduced with version |
2007-09-19 when common parts were moved to a separate file. |
- Optimized CRC routine (thanks to Reimar Doeffinger). |
|
* Release 2008-02-16 |
|
- Removed outdated IAR compatibility stuff (code sections). |
- Added hook macros for USB_RESET_HOOK() and USB_SET_ADDRESS_HOOK(). |
- Added optional routine usbMeasureFrameLength() for calibration of the |
internal RC oscillator. |
|
* Release 2008-02-28 |
|
- USB_INITIAL_DATATOKEN defaults to USBPID_DATA1 now, which means that we |
start with sending USBPID_DATA0. |
- Changed defaults in usbconfig-prototype.h |
- Added free USB VID/PID pair for MIDI class devices |
- Restructured AVR-USB as separate package, not part of PowerSwitch any more. |
|
* Release 2008-04-18 |
|
- Restructured usbdrv.c so that it is easier to read and understand. |
- Better code optimization with gcc 4. |
- If a second interrupt in endpoint is enabled, also add it to config |
descriptor. |
- Added config option for long transfers (above 254 bytes), see |
USB_CFG_LONG_TRANSFERS in usbconfig.h. |
- Added 20 MHz module contributed by Jeroen Benschop. |
|
* Release 2008-05-13 |
|
- Fixed bug in libs-host/hiddata.c function usbhidGetReport(): length |
was not incremented, pointer to length was incremented instead. |
- Added code to command line tool(s) which claims an interface. This code |
is disabled by default, but may be necessary on newer Linux kernels. |
- Added usbconfig.h option "USB_CFG_CHECK_DATA_TOGGLING". |
- New header "usbportability.h" prepares ports to other development |
environments. |
- Long transfers (above 254 bytes) did not work when usbFunctionRead() was |
used to supply the data. Fixed this bug. [Thanks to Alexander Neumann!] |
- In hiddata.c (example code for sending/receiving data over HID), use |
USB_RECIP_DEVICE instead of USB_RECIP_INTERFACE for control transfers so |
that we need not claim the interface. |
- in usbPoll() loop 20 times polling for RESET state instead of 10 times. |
This accounts for the higher clock rates we now support. |
- Added a module for 12.8 MHz RC oscillator with PLL in receiver loop. |
- Added hook to SOF code so that oscillator can be tuned to USB frame clock. |
- Added timeout to waitForJ loop. Helps preventing unexpected hangs. |
- Added example code for oscillator tuning to libs-device (thanks to |
Henrik Haftmann for the idea to this routine). |
- Implemented option USB_CFG_SUPPRESS_INTR_CODE. |
|
* Release 2008-10-22 |
|
- Fixed libs-device/osctune.h: OSCCAL is memory address on ATMega88 and |
similar, not offset of 0x20 needs to be added. |
- Allow distribution under GPLv3 for those who have to link against other |
code distributed under GPLv3. |
|
* Release 2008-11-26 |
|
- Removed libusb-win32 dependency for hid-data example in Makefile.windows. |
It was never required and confused many people. |
- Added extern uchar usbRxToken to usbdrv.h. |
- Integrated a module with CRC checks at 18 MHz by Lukas Schrittwieser. |
|
* Release 2009-03-23 |
|
- Hid-mouse example used settings from hid-data example, fixed that. |
- Renamed project to V-USB due to a trademark issue with Atmel(r). |
- Changed CommercialLicense.txt and USBID-License.txt to make the |
background of USB ID registration clearer. |
|
* Release 2009-04-15 |
|
- Changed CommercialLicense.txt to reflect the new range of PIDs from |
Jason Kotzin. |
- Removed USBID-License.txt in favor of USB-IDs-for-free.txt and |
USB-ID-FAQ.txt |
- Fixed a bug in the 12.8 MHz module: End Of Packet decection was made in |
the center between bit 0 and 1 of each byte. This is where the data lines |
are expected to change and the sampled data may therefore be nonsense. |
We therefore check EOP ONLY if bits 0 AND 1 have both been read as 0 on D-. |
- Fixed a bitstuffing problem in the 16 MHz module: If bit 6 was stuffed, |
the unstuffing code in the receiver routine was 1 cycle too long. If |
multiple bytes had the unstuffing in bit 6, the error summed up until the |
receiver was out of sync. |
- Included option for faster CRC routine. |
Thanks to Slawomir Fras (BoskiDialer) for this code! |
- Updated bits in Configuration Descriptor's bmAttributes according to |
USB 1.1 (in particular bit 7, it is a must-be-set bit now). |
|
* Release 2009-08-22 |
|
- Moved first DBG1() after odDebugInit() in all examples. |
- Use vector INT0_vect instead of SIG_INTERRUPT0 if defined. This makes |
V-USB compatible with the new "p" suffix devices (e.g. ATMega328p). |
- USB_CFG_CLOCK_KHZ setting is now required in usbconfig.h (no default any |
more). |
- New option USB_CFG_DRIVER_FLASH_PAGE allows boot loaders on devices with |
more than 64 kB flash. |
- Built-in configuration descriptor allows custom definition for second |
endpoint now. |
|
* Release 2010-07-15 |