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History

Since version 3.3 this list has been replaced by a standard ChangeLog file.

Version 3.3.2

Version 3.3.1

Version 3.3.0

Version 3.2.2

• Fixed: Some DHCP servers discard Nut/Net DHCP discover telegram because it doesn't satisfy upward compatibility with BOOTP packet. Thanks to Tomohiro Haraikawa for this patch.

Version 3.2.1

• Added: PPP debug module.
• Fixed: Corrupted network configuration in EEPROM. Thanks to Stephen Noftall.
• Fixed: Compilation of timer.c fails if NUT_CPU_FREQ has been defined. Thanks to Zoltan Molnar.
• Fixed: NutEnterCritical may corrupt the stack when compiled with GCC option -O0. Thanks to Nicolas Moreau and Johan Kruger.
• Added: Global system configuration include.
• Changed: PPP IP configuration moved from net interface to driver control block.
• Fixed: DHCP offers had been accepted only, if they were sent as broadcasts. Many people had sent patches, I took the one from Mitsuru Sato, which is the most simple.
• Changed: Reduced TCP state machine stack size from 1024 to 512 bytes, keeping fingers crossed.
• Changed: Input buffer flushed before sending out a modem chat string.
• Changed: Realtek driver uses definitions from config includes.
• Fixed: Realtek driver ends up with all zero MAC address.
• Changed: Using preprocessor definition for C++ compatible declaration block to avoid automatic indention.
• Fixed: Starting threads may fail whith some GCC optimizations.
• Fixed: UDP checksum may have been wrong when transmitting broadcasts. Special thanks to Nicolas Moreau for this patch.
• Fixed: When starting several Ethernuts at the same time, some may receive the same IP address offer from DHCP. Tom Nyström reported this first. The DHCP message ID is now based on the MAC address and the system tick counter.
• Fixed: Device registration failed for devices without initialization routine, e.g. urom file system driver.
• Changed: Cleaned up the code for network interface configuration, specially for cases where DHCP isn't available.
• Changed: Using a well known spammer to test the inetq application.
• Changed: Global variables are no longer limited to internal SRAM.
• Fixed: Added Ted Roth's patches to let crurom compile under Linux.
• Fixed: Binary mode not working in _fmode(). Thanks to Alessandro Zummo.

Version 3.1.9

• Changed: PPP has been redesigned. It is now using a more complete state machine and has been split into a network and a driver part. Ethernet-only application will not link in PPP code anymore.
• Added: Chat script interpreter for enhanced modem handling.
• Added: LCD driver with VT52 terminal emulation device.
• Fixed: Allocating and releasing of NETBUF structures has been inconsistent in case of communication errors and low memory situations. Generally, all transmit routines will now release its NETBUF in case of failures.
• Fixed: Undefined signal handler variables with registered timer interrupts. Thanks to Tom Nystrom.
• Fixed: Network masks with all bits set had been refused.
• Fixed: GCC sets the stack on main entry. As a temporary fix we redefine main during preprocessing.
• Changed: Broadcasting to a queue will clear it, even if it had been in signaled state.
• Changed: For applications, make install will additionally build a binary and copy it to the bin directory. This is most useful when working with eboot and tftp.
• Fixed: When compiling with GCC and different optimizations, NutInit may have failed. Thanks to Ralph Mason.
• Fixed: Andre Albsmeier found and fixed a problem with ISC-DHCP V3, which also occured with the DHCP server of some routers.
• Fixed: NutUdpReceiveFrom returned the port number in network byte order, which doesn't fit with the documentation and other functions. It will be now returned in host byte order. Thanks to Pavel Chromy.
• Added: Two additional devices for debugging output, which can be even used while running in interrupt context.
• Changed: NutNetAutoConfig() has been moved to pro/dhcpc and is now deprecated for new applications. A new function named NutDhcpIfConfig() allows for specifying a timeout. Thanks to Pavel Chromy.
• Changed: In previous releases network devices had been initialized during interface configuration, while all other devices had been initialized when opening that device. Now all devices are initialized during registration. This will probably break your existing device drivers.
• Fixed: Packet overflows in the Realtek network driver caused high interrupt latency times for other interrupt driven devices.
• Changed: Complete redesign of VS1001K driver by Pavel Chromy. Great.
• Fixed: Memory leak in NutUdpDestroySocket(). Thanks to Ralph Mason.
• Fixed: When reading 255, fgetc() returned EOF. Thanks to Ralph Mason.

Version 3.0.1

• Added: Almost full stdio provided, which is usable with sockets.
• Changed: NutMain() is now deprecated. Use main() for your application's main thread.
• Changed: Major change to the I/O system. NutPrint and NutIfStream are deprecated. Use stdio.

Version 2.6.0

Note: IDE, Compact Flash and PPP are still experimental code.

• Changed: Moved to AVRGCC 3.3 and ICCAVR 2.26c.
• Changed: Default windows installation directory is now c:/ethernut/nut.
• Added: Cool IDE diskdrive and Compact Flash interface done by Michael Fischer. Supports FAT32 with long filenames. Be aware, that this is not stable.
• Added: Multimaster TWI interface (aka I2C). No sample available yet.
• Added: Enhanced UART interface for ATmega128.
• Added: Special directory for OS modifications allows changing Nut/OS parts for specific application needs without touching the original code.
• Added: Tick counter for number of ticks since system started. By Michael Fischer.
• Added: Enhanced HTTP request handler by Michael Fischer.
• Changed: Event routines return the number of threads woken up. This may improve your application code a lot.
• Changed: The for-statements in the Makefiles had been replaced. Now sh.exe isn't required anymore and make all should work fine on Windows XP.
• Changed: UART specific definitions were moved from device.h to uart.h. This may break your existing applications.
• Fixed: More reliable MP3 driver for VS1001k.
• Fixed: Handle possible deadlock in the TCP state machine in low memory situations.
• Fixed: TCP might fail to process incoming packets on slow connections. Was it Mike Cornelius, who detected this?
• Fixed: Racing conditions on signaled events. Thanks to Michael Fischer.
• Changed: Some RAM saved by moving HTTP de-/encoder table to ROM.

Version 2.5.91 (unstable)

• Changed: Supports the latest AVR-GCC snapshot, but may introduce some compatibility problems with previous versions. avrlibc is now using include/avr for avr specific files, which broke many Nut/OS modules. These include definitions have now been moved to compiler.h to avoid changing too many files in the future. In addition, a copy of the latest avrlibc includes have been added to the Nut/OS include directory. If you installed the latest avrlibc, you may manually remove these files from include/avr.
• Added: Configure executable for Windows allows the user to select his specific environment. Almost the same as the Linux configure script, but supports both compilers, AVR-GCC and ICCAVR. This replaces the previous batch files to setup the environment, but requires that the compiler's bin directory has been added to the PATH environment variable.
• Fixed: Some compiler warnings about signed/unsigned comparisions.
• Fixed: Bad volatile declaration in init.c.

Version 2.5.9 (unstable)

• Added: Long awaited PPP support, contributed by Mike Cornelius from Call Direct Cellular Solutions Pty. Ltd. Mike wrote:

This driver is stable for my configuration but will need work if it is going to be generally useful, as such it is being released as a pre-alpha driver at this stage. Specific things that are known to be missing or need work are:

User Authentication

Link state management (please discuss with me if you are planning to work on this)

CRC should be table based

DNS server update handling (Ethernut native resolver not presently supported)

Outbound Async Character mapping should be improved

• Fixed: Corrupted NIC registers were not handled correctly. This bug occured in heavy traffic networks. Thanks to Gerd Mueller and Dirk Tappert from Endress + Hauser Wetzer GmbH + Co. KG, who spend many hours tracing this nasty bug.
• Fixed: IP checksum calculation sometimes returns a wrong result. Temporarly switch back to the C routines.
• Added: Auto detection of external RAM.
• Added: New API GetThreadByName added by Mike Cornelius.
• Fixed: Compile bug when compiling for fixed crystal frequency. Thanks to Robert Hildebrand.

Version 2.5.2

• Fixed: When registering and opening UART1, Nut/OS continues using UART0. Thanks to James Canterbury for tracking down this problem.
• Fixed: Prototype of NutTcpError is missing in socket.h.
• Fixed: NutTcpConnect() fails to return, if the destination is on the local network and is not reachable.
• Fixed: Already received and buffered TCP data may be discarded, when the peer closes the connection before the application reads this data. Thanks to James Canterbury for reporting this problem.
• Fixed: Nut/Net responds with RST to late SYNs. This breaks low speed connections. RSTs are send now only, if the sequence number of the SYN differs from the initially sent sequence. Thanks to Mike Cornelius for pointing this out.
• Fixed: ISO-8859-1 character set was hardcoded into the HTTP routines. This disables correct display of different character sets in the webbrowser. Thanks to JianJian, who detected this.
• Fixed: Bug in retransmit timer initialization may retransmit immediately after the original packet is ready to send. Thanks to Mike Cornelius.

Version 2.5.1

• Added: TCP segments received in advance are now buffered. This gives much better performance while receiving MP3 streams from Internet Radio Stations.
• Added: Additional notes about setting up the different compiler environments.
• Added: Ready-to-run projects for ImageCraft IDE. However basemon and httpd are slightly limited compared to their AVR-GCC counterparts.
• Added: Socket option for configurable TCP receive buffer size. Default is 3216 bytes.
• Fixed: Files created by crurom utility failed to compile under ICCAVR.
• Fixed: Bad documentation about the return value, when reading from sostream devices. They return 0 on broken connections, not -1. Thanks to Markus von Ehr.

Version 2.5.0

• Added: Support for ImageCraft ICCAVR Compiler. Major work has been done by Klaus Ummenhofer. RTOS and TCP stack are working, but most samples need to be partly rewritten, because of different ROM string handling. Documentation is still missing.
• Added: Device driver for VS1001K MP3 deoder. This is still experimental.
• Fixed: Reset problem with pre-1.3 boards.
• Fixed: System may crash when all timers elapsed. Thanks to Klaus Ummenhofer.
• Added: Crurom utility enhanced
• Fixed: Second UART was missing in the library. Thanks to Robert Hildebrand.
• Changed: Default TCP window size is now 4288.

Version 2.4.2

• Changed: GCC Version 3.2 required for ATmega 128 and ATmega 103.
• Changed: uisp is used for flashing.
• Changed: Bin directory divided for ATmega 103 and ATmega 128.
• Fixed: Baudrate detection didn't work on fast CPU and slow keyboard repeat.
• Fixed: Broken ATmega 128 watchdog routines in AVR-GCC.
• Changed: Enhanced Basemon detects shortcuts on data bus, address bus and port lines. Basemon can also send Ethernet broadcasts without initializing the TCP/IP stack.
• Changed: Optimizing for space. Previously used level 3 will fail with new compiler, because inline behaviour changed.
• Fixed: Bug in ifconfig doesn't store default gate in EEPROM.
• Changed: crurom utility skips CVS directories.

Version 2.4.1

• Changed: Most parts of the TCP stack have been redesigned. The new stack can transfer up to 256 kByte of data per second on a 14.7 MHz ATmega 128.
• Changed: Redesigned NIC driver with improved stability in heavy traffic networks.
• Added: Ability to set some socket options, like maximum segment size and read/write timeout.
• Fixed: Signaled event queue freezes thread.
• Fixed: Misconfigured Makefiles called uninstalled nutisp.exe.

Version 2.3.4

• Fixed: TCP stack miserably failed if more than one port was listening. Alejandro Lopez kindly reported this bug.
• Fixed: Serveral interrupts, mainly UART related, were not working with ATmega 128.
• Added: New device driver routines for digital I/O and two new sample programs for relay outputs and optocoupler inputs.
• Added: Routines to flash externally attached AVR controller.

Version 2.3.3

• Added: Enhanced API documentation.
• Added: Support for standard stream I/O device using a null pointer. This device uses the first on-chip UART and doesn't do any buffering. This replaces the NutKPrint functions.
• Fixed: Another timer bug has been fixed. If a timeout timer elapsed after the thread received the event it was waiting for but before this thread starts running, it removed the timer, although this timer may already had been re-used by another thread.
• Fixed: Empty filenames returned the wrong mime type. Some browsers displayed the source of index.html.
• Fixed: Code for using CPU crystal instead of the asynchronous 32 kHz clock for the system timer was broken.
• Changed: Unused NutDeviceSend removed.
• Added: Support for Imagecraft ICCAVR, but not completed.
• Changed: Makefile, Makedefs and Makerules restructured. The library directory has been divided into processor specific subdirs.
• Added: Batch file to setup different environments for ATmega 103 and ATmega 128.
• Changed: Using __SFR_OFFSET to register access set to 0x20 for ATmega 128 and 0x00 for ATmega 103.
• Fixed: TCP state machine didn't handle keepalive packets, some out-of-sequence packets and window probes correctly. Thanks to Michael Stegen, who reported this bug. Michael is working on Netuner, an Internet Radio based on Ethernut.
• Changed: Basemon SRAM test enhanced.
• Added: Simple RS232 server to access the serial port on the Ethernut via TCP/IP.

Version 2.3.2

• Fixed: Archive contained a very old API doc.
• Fixed: System crash if last timer stops. Thanks to Bernardo Innocenti.
• Fixed: Stream I/O failed on empty buffers, returning garbage. Thanks to Mike Cornelius.
• Added: Many requests were sent to us regarding correct linefeed / carriage return handling. GetLine should work now with all combinations.
• Added: Support for 1 millisecond system timer using the CPU crystal instead of the asynchronous 32 kHz clock. This had been suggested by Marc Wetzel some time ago. Code has been donated by Bernardo Innocenti.
• Changed: SPI UART names changed from uart1/8 to uarts0/7. Suggested by Marc Wetzel.
• Fixed: Interrupt registration doesn't support ATmega 128 interrupts. Code provided by Marc Wetzel.
• Added: Timeout support for UART I/O. This is in untested alpha stage.
• Added: Support for UART 1 on ATmega 128. This is in untested alpha stage. Marc told me, that he got more on this, like 9 bit support etc.

Version 2.3.1

• Added: Support for ATmega 128.
• Added: DNS protocol support.
• Added: Internet routing sample.
• Changed: API functions restore CPU interrupt status flag before returning to the caller. This may break your current application.
• Changed: Waiting for an event will yield the CPU, even if the event has been already signaled.
• Fixed: SOSTREAM failed on high traffic output.
• Fixed: Racing condition in TCP output eats heap.
• Fixed: Recovering from closed TCP window failed.
• Fixed: Resending lost TCP segments with too much delay.
• Changed: Redesigned TCP socket close.
• Fixed: DHCP failed with multiple DNS entries.
• Added: Compiling with NUTDEBUG will automatically initialize the UART and add 4 bytes to every allocated unit to detect heap corruption.
• Changed: KPrint routines can be used in interrupt context.

Version 2.2.2

• Fixed: Marc found a missing cli() in NutEventWait.

Version 2.2.1

• Changed: Events posted to an empty queue are remembered. Note, that this might break your current application. Thanks to Marc Wetzel for this suggestion.
• Changed: Completely redesigned timer handling. This may break your application, because timer callbacks are now running in interrupt context. Marc Wetzel send a complete new timer handling with great performance and made additional suggestions to further enhance it. I didn't taken over his complete code but tried to implement most of it.
• Changed: New HTTP server sample supporting multiple connections and throttling in low memory situations.
• Added: HTTP library automatically looks for index.html.
• Changed: Network debugging.
• Changed: NutThreadSuspend and NutThreadResume are gone. Use events.
• Added: New item td_queue added to NUTTHREADINFO. This is used to identify the root of the event waiting queue.
• Added: New module osdebug.c.
• Fixed: Due to bad overflow error recovery, the Ethernet controller died under heavy traffic.
• Fixed: TCP continuosly resends unacknowledged segments, even if the remote responds with a reset segment.
• Fixed: TCP sockets may get stuck in SYNRECEIVED state.
• Fixed: Multiple threads listening on the same TCP port may receive wrong segments while in listening state.
• Added: Read timeout value in TCPSOCKET structure, but no socket option routine yet. May be set manually.
• Added: Better API documentation.

Version 2.1.3

• Changed: Using AVR GCC 3.0.2.
• Fixed: Stopping oneshot timers corrupts timer list, which makes threads disappear.
• Fixed: ARP queues the last packet only, discards older ones.
• Fixed: If sending too fast after initialization, the NIC sender might hang.

Version 2.1.1

• Added: SPI UART support added, still undocumented.
• Added: Kernel print routines, still undocumented.
• Added: Stream I/O with character translation, undocumented.
• Changed: Interrupt are not disabled anymore within heap routines.
• Changed: Timeout handling in NutEventWait(), but still buggy.
• Fixed: Threads sample ran out of stack.

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