NuttX Release Notes =================== This file contaions are the release notes for the NuttX (and apps) packages for every release. The text is just as was written at the time of release (with perhaps some corrected typos). Over the course of time, NuttX has used several different repositiories: CVS, two SVN repositories, and currently a GIT repository. Therefore, revision information specific to an older repository may not be meaningful today. To make it easier to track there older versions in the current GIT repository, a GIT lightweight tag has been applied for each release. The tag name is the release name (for example, the release 6.27 has tag name "nuttx-6.27"). NuttX-0.1.0 ----------- This is the initial. This initial includes the complete NuttX RTOS with support for the Linux user mode simulation and the TI TMS320C5471 (Arm7) processor. Partial support for the 87C52 is included. This release has been verified on both the Linux user-mode and C5471 platforms using the test program under examples/ostest. Test results for the C5471 can be found in arch/c5471/doc/test-results.txt. This tarball contains a complete CVS snapshot from March 9,2007. NuttX-0.1.1 ----------- This is the second release of NuttX. This release includes the following. See the ChangeLog for more detailed description of the changes. (1) General OS bugfixes (see the ChangeLog for details), (2) bugfixes for the TI TMS320C5471 (Arm7) platform (see the ChangeLog) (3) Complete support for the 87C52. (However, the 87C52 release is not stable enough for general usage). (4) Added the beginning of a shell call NuttShell (nsh) This release has been verified on the Linux user-mode platform, the Spectrum Digital TMS320C5471 EVM, and the PJRC 87C52 development board using the test program under examples/ostest. STATUS: The development status remains as ALPHA until further testing is performed. This tarball contains a complete CVS snapshot from March 14, 2007. NuttX-0.1.2 ----------- This is the third release of NuttX. This release is primarily a bugfix release with minimal new features. See the ChangeLog for a more detailed description of the changes. (1) Several important OS and ARM7 bugfixes, (2) opendir(), closedir(), readdir(), etc. added (3) Added C5471 watchdog timer. (4) Created a shareable, serial driver. (5) Added 'ls' command to NuttShell (nsh) (6) Added a test of the round robin scheduler This release has been verified on the Linux user-mode platform, the Spectrum Digital TMS320C5471 EVM using the test program under examples/ostest. This tarball contains a CVS snapshot from March 19, 2007. NuttX-0.2.1 ----------- This is the fourth release of NuttX. This release adds adds support for a new platform, restructures many header files, and adds a few new features: (1) Support for Neuros OSD / DM320 (2) Restructuring of header files for better POSIX compliance (3) Added kill() (4) Added POSIX timers (5) bugfixes and documentation updates This release has been verified on the Linux user-mode platform, the Spectrum Digital TMS320C5471 EVM, and the Neuros OSD using the test program under examples/ostest. Because of the stability of these tests, the project status has been upgraded to 'beta.' This tarball contains a complete CVS snapshot from March 22, 2007. NuttX-0.2.2 ------------ This is the fifth release of NuttX. There is no major new functionality in this release. This release adds support for new pthread barrier APIs, changes the directory structure, to better handle different board configurations using the same processor architecture, and corrects a few defects. See the ChangeLog for a complete list of changes. This release has been verified on the Linux user-mode platform and the Neuros OSD using the test program under examples/ostest. There are no known, critical defects but the project development status remains at 'beta' status pending further test and evaluation. This tarball contains a complete CVS snapshot from March 26, 2007. NuttX-0.2.3 ------------ This is the sixth release of NuttX. This release is primarily a bugfix release. Numerous problems were fixed as detailed in the change log. New functionality includes support for timed message queues. See the ChangeLog for a complete list of changes. This release has been verified on the Linux user-mode platform and the Neuros OSD using the test program under examples/ostest. The results of the testing is available in the source tree under configs/ntosd-dm320/doc/test-results. There are no known, critical defects but the project development status remains at 'beta' status pending further test and evaluation. This tarball contains a complete CVS snapshot from March 29, 2007. NuttX-0.2.4 ------------ This is the 7th release of NuttX. This release is only to roll out build changes to better support different SoC's that use the same processor architecture. In particular, the two existing ARM architectures, c5471 and DM320 were combined into a single ARM directory. This was done in preparation for an LPC2148 port that is currently in progress. There is NO new functionality or significant bugfixes in this release. See the ChangeLog for a complete list of changes. This release has been verified on the Linux user-mode platform and the Neuros OSD using the test program under examples/ostest. The results of the testing is available in the source tree under configs/ntosd-dm320/doc/test-results and under configs/sim/doc/test-results. There are no known, critical defects but the project development status remains at 'beta' status pending further test and evaluation. This tarball contains a complete CVS snapshot from April 28, 2007. NuttX-0.2.5 ------------ This is the 8th release of NuttX. This release includes: (1) Several bug fixes (2) Initial support for FAT filesystems. Testing has not been exhaustive and some functionality is missing (mkdir, stat, unlink chmod, and rename functionality is not yet implemented). (3) Support for the NXP lpc2148 processor is included but is untested as of this writing. The current implementation includes only support for serial console and timer interrupt. See the ChangeLog for a complete list of changes. This release has been verified only on the Linux user-mode platform. This tarball contains a complete CVS snapshot from May 19, 2007. NuttX-0.2.6 ----------- This is the 9th release of NuttX. This is primarily a bugfix release to correct a number of problems introduced with the 0.2.5 release. This release does include some FAT filesystem extensions including unlink(), mkdir(), rmdir(), rename(), opendir(), closedir(), readdir(), seekdir(), telldir(), rewindir(). There are some pending FAT changes that did not make it into this release including stat(), truncate(), and long file names. See the ChangeLog for a complete list of changes. This release has been verified only on the Linux user-mode platform. This tarball contains a complete CVS snapshot from May 26, 2007. NuttX-0.2.7 ----------- This is the 10th release of NuttX. This is primarily a bugfix release to correct a number of problems reported to me (thanks Didier!). This release does include the final changes complete the FAT filesystem logic including stat(), statfs(), and non-standard APIs to manage FAT attributes. At present, FAT long file names and file truncate() are still not supported. See the ChangeLog for a complete list of changes. This release has been verified only on the Linux user-mode platform. This tarball contains a complete CVS snapshot from June 9, 2007. NuttX-0.2.8 ----------- This is the 11th release of NuttX. This release: (1) corrects important bugs in opendir() and realloc() (2) adds support for environment variables (3) adds several new C library interfaces (4) extends several example programs See the ChangeLog for a complete list of changes. This release has been verified only on the Linux user-mode platform. This tarball contains a complete CVS snapshot from July 2, 2007. NuttX-0.3.0 ----------- This is the 12th release of NuttX. This release includes the initial integration of a network subsystem and the uIP TCP/IP stack into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page). Also included is a device driver for the Davicom DM90x0 Ethernet controller. This integration is very preliminary. Only a small portion of the network functionality has been integrated and there are a number of open issues (see the TODO file). The network subsystem is pre-alpha at this point in time. I expect that it will stabilize and mature over the next few releases. The baseline functionality of NuttX continues to mature and remains at post-beta (as long as the network is not used). See the ChangeLog for a complete list of changes. This release has been verified only on the Neuros OSD (DM320 ARM9) platform using the DM90x0 driver. This tarball contains a complete CVS snapshot from November 6, 2007. NuttX-0.3.1 ----------- This is the 13th release of NuttX and the second release containing the integration of a network subsystem and the uIP TCP/IP, UDP, and ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page). Many network-related problems have been fixed and the implementation has matured significantly. However, the level of network reliability is probably still at the pre-alpha or early level. It is sufficiently complete that you may begin to perform some network integration and is expected to achieve beta level of reliability over the next few releases. The baseline functionality of NuttX continues to mature and remains at post-beta (as long as the network is not used). See the ChangeLog for a complete list of changes. This release has been verified only on the Neuros OSD (DM320 ARM9) platform using the DM90x0 driver. This tarball contains a complete CVS snapshot from November 19, 2007. NuttX-0.3.2 ----------- This is the 14th release of NuttX and the 3rd release containing the integration of a network subsystem and the uIP TCP/IP, UDP, and ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page). Many network-related problems have been fixed and the implementation has matured significantly. This release consists of: o TCP-related bug-fixes o TCP performance improvements o Initial UDP integration o Initial uIP micro webserver integration See the ChangeLog for a complete list of changes. The level of network reliability is at alpha level is expected to achieve beta level of reliability over the next few releases. The baseline functionality of NuttX continues to mature and remains at post-beta. This release has been verified only on the Neuros OSD (DM320 ARM9) platform using the DM90x0 driver. This tarball contains a complete CVS snapshot from November 23, 2007. NuttX-0.3.3 ----------- This is the 15th release of NuttX and the 4th release containing the integration of a network subsystem and the uIP TCP/IP, UDP, and ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page). Many network-related problems have been fixed and the implementation has matured significantly. This release consists of: o TCP-related bug-fixes for disconnecting sockets o Correction of some TCP read-ahead logic o TCP performance improvements o Misc. additions and cleanup (See the ChangeLog for a complete list of changes). The level of network reliability is at an early beta release level. The baseline functionality of NuttX continues to mature and remains at post-beta. Open network-related issues include only: o Some minor unimplemented BSD socket functionality, o Thread safety issues: the same socket cannot be used concurrently on different threads. o Pending design changes necessary to support multiple network interfaces. o IPv6 support is incomplete. This release has been verified only on the Neuros OSD (DM320 ARM9) platform using the DM90x0 driver. Any feedback for improving the network reliability/performance would be greatly appreciated. This tarball contains a complete CVS snapshot from November 28, 2007. NuttX-0.3.4 ----------- This is the 16th release of NuttX and the 5th release containing the integration of a network subsystem and the uIP TCP/IP, UDP, and ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page). This release is primarily a bug-fix release. New features include only: o TELNET front-end to NSH, o DHCPC server functionality, and o C5471 Ethernet driver. Numerous network related problems were fixed related to DHCPC, UDP input processing, UDP broadcast, send timeouts, and bad compilation when uIP is compiled at high levels of optimization. The level of network reliability is at a strong beta release level. The baseline functionality of NuttX continues to mature and remains at post-beta or production level. Parts of this release were verified only on the Neuros OSD (DM320 ARM9) platform using the DM90x0 Ethernet driver and other parts on the Spectrum Digital C5471 EVM using the C5471 Ethernet driver. Any feedback about bugs or suggestions for improving the network reliability/performance would be greatly appreciated. This tarball contains a complete CVS snapshot from December 10, 2007. NuttX-0.3.5 ----------- This is the 17th release of NuttX this release is primarily a bug-fix release and intended to synchronize with the current CVS contents. See the ChangeLog for a detailed list of changes and fixes. This release were verified only on the Spectrum Digital C5471 EVM using the C5471 Ethernet driver. Any feedback about bugs or suggestions for improvement would be greatly appreciated. This tarball contains a complete CVS snapshot from December 18, 2007. NuttX-0.3.6 ----------- This is the 18th release of NuttX. This release contains on a few changes. The primary purpose of this release is to synchronize with the release of the pascal-0.1.0 add-on package. This release of NuttX includes the following changes: * Fixes for use with SDCC compiler * Added a simulated z80 target (arch/z80) * Fix deadlock errors when using stdio but with no buffering * Add support for the add-on Pascal P-Code interpreter (pcode/) (see the pascal-0.1.0 package) This release were verified only on the simulated Z80 and and host simulation targets. As usual, any feedback about bugs or suggestions for improvement would be greatly appreciated. This tarball contains a complete CVS snapshot from January 6, 2007. ==== There was an error in the initial 0.3.6 release that prevented a successful build unless the Pascal add-on was present. The tarball was patched to include the fix. Make sure that you download the nuttx-0.3.6.1.tar.gz version to avoid this problem. NuttX-0.3.7 ----------- This is the 19th release of NuttX. This release includes the preliminary port of NuttX to the ZiLOG z16f 16-bit microcontroller. This port was verified using the ZiLOG z16f2800100zcog Development and the ZiLOG ZDS-II toolchain. See http://www.zilog.com for further information. I emphasize that this is a preliminary release of the z16f port and is only alpha or, perhaps, pre-alpha quality as of this writing. There are a list of known issues in the TODO file in the root of the NuttX directory. The overall quality of NuttX (excluding the z16f port) continues to improve beyond the late beta level. The z16f port required numerous changes to NuttX to handle: * NEAR and FAR addressing, and * Use of a Windows native toolchain in a Cygwin build environment. In addition to the z16f port, at least one very critical bug was found and corrected in NuttX: The thread-specific errno value of one task was being randomly trashed when a different thread exited. This release were verified on the ZiLOG z16f2800100zcog, Neuros OSD (ARM9), and the simulation platforms. As usual, any feedback about bugs or suggestions for improvement would be greatly appreciated. This tarball contains a complete CVS snapshot from January 31, 2008. NuttX-0.3.8 ----------- This is the 20th release of NuttX. This is a minor bugfix release. It corrects a few minor problems, adds a few minor features, and continues the integration of the ZiLOG Z18F and of the Pascal P-Code add-on. This release is synchronized with the release of Pascal-0.1.2. This tarball contains a complete CVS snapshot from February 10, 2008. NuttX-0.3.9 ----------- This is the 21st release of NuttX. This is a minor future enhancement release. This release includes support for the ZiLOG Z8Encore! micro- controller. Also included is the initial framework for support for the Z80, XTRS platform (http://www.tim-mann.org/xtrs.html). This released has been verified only on the ZiLOG ZDS-II Z8Encore! chip simulation. This tarball contains a complete CVS snapshot from March 9, 2008. NuttX-0.3.10 ------------ This is the 22nd release of NuttX. This is an important bug fix release. This release incorporates fixes to correct critical list handling errors in task shutdown logic: One in timer deletion logic (timer_delete.c) and one in stream logic (lib_init.c). This release also includes support to ZiLOG EZ80Acclaim microcontroller (EZ80F91 chip) and configurations for the ZiLOG z8f64200100kit (Z8F6423) and ez80f0910200kitg (EZ80F091) development kit. NuttX-0.3.11 ------------ This is the 23rd release of NuttX. This is another important bugfix release. This releases fixes several bugs: * Two POSIX timer bugs: a memory leak as well a fatal sequencing error. * Several FAT filesystem errors. * A deadlock that can occur in opendir() A few new features were also added: * Support for recursive mutexes * Added a RAM disk block driver * The host simulator no longer uses direct Linux system calls and now also works on Cygwin. * The OS test was strengthen and now runs as an endurance test These changes were verified only on the Host simulator under Cygwin. Please report any errors to me. This tarball contains a complete CVS snapshot from June 1, 2008. NuttX-0.3.12 ------------ This is the 24th release of NuttX. This release includes some minor bugfixes as well as a few new features. Bugs fixed include: * Corrected an error in recursive mutex implementation. * task_create() was only dup()ing the first three file descriptors. * Fixed driver open reference counting errors in dup(), dup2(), and exit(). * Fixed error handling logic in fflush(). New features were also added: * Pipes and pipe() API * FIFOs and mkfifo() API * mkfatfs() API can be used to format FAT file systems. These changes were verified only on the Host simulator under Cygwin. Please report any errors to me. This tarball contains a complete CVS snapshot from August 10, 2008. NuttX-0.3.13 ------------ This is the 25th release of NuttX. This release includes some important bugfixes as well as a few new features. Bugs fixed include: * Fixed problems with Cygwin-based console input. NSH now works with the Cygwin simulator. * sched_get_priority_max/min returned error on SCHED_RR * Corrected detection of End-of-File in fgets() * Fixed an error in opendir() that could cause an assertion to fail inappropriately. * Corrected an error in the FAT that caused files opened for writing with O_APPEND to fail. * Fix error in getopt() when called with argc==1 * Fix error in stat() when used on the root directory * Fixed a critical bug that effects the way that environment variables are shared among pthreads. * uIP port now supports multi-threaded, concurrent socket access. So, for example, one thread can be reading from a socket while another is writing to the socket. New features were also added: * New OS APIs: chdir() and getcwd() * The Nuttx shell (NSH) has been extended in many ways. - New commands: mkfatfs, mkfifo, sleep, usleep, nice, sh, cd, and pwd - New memory inspection commands and heap usage commands - New capabilities: - Execution of commands in background - Execution of simple scripts - Redirection of command output - Last command status ($?) - Now supports if-then[-else]-fi construct - Other features as noted in the ChangeLog. These changes were verified only on the Host simulator under Cygwin and under Linux and also on the Neuros OSD (ARM9). Please report any errors to me. This tarball contains a complete CVS snapshot from September 1, 2008. nutt-0.3.14 ----------- This is the 26th release of NuttX. This release includes some important bugfixes as well as a few new features. Critical bugs fixed include: FAT FS: * Fixed several critical bugs with regard to fat reading and writing and FAT12 accesses. Basically the FAT FS only worked with my tiny test files and test cases. A lot of stronger FAT tested is still needed! * Fixed another FAT bug in implementation of FAT lseek(); this prohibited correct random access to large files. Network: * Corrected a critical bug that may prevent recvfrom from receiving packets from most remote UDP port numbers. * Corrected an error in multi-threaded socket handling in send() and sendto(). Outgoing data could overwrite incoming data. * Corrected IP checksum calculation in ICMP and UDP message send logic. * Corrected an error in send() timeout logic. New features were also added: Network: * Added support for application access to ICMP protocol stacks * Added ping request logic (net/uip). * Added basic TFTP client logic (netutils/tftpc). NuttShell (NSH): * New commands: 'test', '[', 'ping', 'mkrd', 'xd', and TFTP 'get' and 'put' See the new NuttShell User Guide for additional information. Other less critical bugs were also fixed and other less important features were were added. See the ChangeLog for details. These changes were verified only on the Neuros OSD (ARM9). Please report any errors to me. This tarball contains a complete CVS snapshot from September 8, 2008. nutt-0.3.15 ----------- This is the 27th release of NuttX. This release includes some new features: * Adds support for the ROMFS filesystem * ROMFS supports mmap() to provide eXecute In Place (XIP) capability * NuttShell (NSH) can be configured to use ROMFS to provide a tiny read-only filesystem with a startup script in /etc. * Completed the basic port of the NXP LPC2148 on the mcu123.com board. The basic port includes successful booting, timer interrupts, serial console, successfully passing the examples/ostest, and a NuttShell (NSH) configuration. These changes were verified only on the mcu123.com NXP LPC2148 board. Please report any errors to me. This tarball contains a complete CVS snapshot from September 20, 2008. nutt-0.3.16 ----------- This is the 28th release of NuttX. This release includes the first support for USB in NuttX. A set of USB APIs were added to support USB device controller drivers and bindings to USB device class drivers. The form of the interface was inspired by the Linux Gadget APIs. At present USB device controller drivers are included for: * The NXP LPC214x. This driver has been verified and is an early alpha stage in quality. * TI DM320. Coding for this driver is complete but it is completely untested as of this release. A controller-independent class driver is also included for: * USB serial class device driver (emulates the Prolific PL2303 serial-to-USB adapter). This driver has only been verified with the Linux host PL2303 driver. Other new features include: * Add an option to set aside a separate stack for interrupt handling (ARM only). This is useful when memory is constrained, there are multiple tasks, and the interrupt stack requirement is high (as when USB is enabled). A few bugs were also fixed: * Fixed the frequency of system timer interrupts in the NXP LPC214x port (off by 20x in nuttx-0.3.15) * Fixed serial driver bugs related to (1) open counts and (2) recognizing O_NONBLOCK on read. * Fixed an error in read(); it was not setting the errno on errors returned from the driver. These changes were verified only on the mcu123.com NXP LPC2148 board using with a Linux host. Please report any errors to me. This tarball contains a complete CVS snapshot from October 10, 2008. UPDATE ------ This release does not build for the ARM target when USB is disabled. Here is the fix: Index: arch/arm/src/common/up_internal.h =================================================================== RCS file: /cvsroot/nuttx/nuttx/arch/arm/src/common/up_internal.h,v retrieving revision 1.13 diff -u -r1.13 up_internal.h --- arch/arm/src/common/up_internal.h 6 Oct 2008 16:20:52 -0000 1.13 +++ arch/arm/src/common/up_internal.h 13 Oct 2008 20:48:21 -0000 @@ -200,7 +200,8 @@ extern void up_usbinitialize(void); extern void up_usbuninitialize(void); #else -# define up_netinitialize() +# define up_usbinitialize() +# define up_usbuninitialize() #endif #endif /* __ASSEMBLY__ */ NuttX-0.3.17 ------------ This is the 29th release of NuttX. This release includes the additional support for USB in NuttX. The following new features were added: * Added support for SPI-based MMC/SD cards (with an SPI driver for the NXP LPC214x). * Added USB storage class device side driver (BBB) * Added an example that demonstrates the USB storage class by exporting the SPI based MMC/SD card on the NXP LPC214x. This is an early alpha release of these drivers. At present they only work with debug features enabled so there are probably some race conditions that occur only with debug features disabled. (Anyone out there with a USB analyzer? I would love to know what is happening.) Several important bugs were also fixed in the FAT file system, USB serial driver and NXP LPC214x USB controller driver. (See the ChangeLog for details.) These changes were verified only on the mcu123.com NXP LPC2148 board using a Linux development environment. USB testing was performed using both a Linux host and a WinXP host. Please report any errors to me. This tarball contains a complete CVS snapshot from October 28, 2008. NuttX-0.3.18 ------------ This is the 30th release of NuttX. This release includes two partially completed ports, several new features, and a couple of important bug fixes. The two partially completed ports are: * The STMicro STR71x processor and configuration for the Olimex STR-P711 board. * The Hitachi SH-1 using the SH1_LCEVB1 (SH-1/US7032EVB1) board Progress on these ports is stalled (as detailed in the ChangeLog). The new features focus primarily on management of block devices and extensions of the NuttShell (NSH). These include: * A loop device that converts a file into a block device. * A block to character (BCH) driver that allow access a block device as if it were character device. * Added strcasecmp() and strncasecmp() libc functions. * Added the 'dd' and 'losetup' commands to NSH. These commands (along with mkfatfs and mount), give good management of filesystems on the target. Several bugs were fixed, the most important of which are: * Fixed a race condition workaround delay in LPC214X SPI logic. This was also the cause of some bad MMC/SD performance on that platform. * Fixed a recently introduced FAT file system problem: It would mount a (invalid) FAT file system even if the medium is not formatted! * Corrected two other important errors in the FAT lseek() implementation: 1 - The sectors-per-cluster value was being reset to "1". 2 - Important lseek logic was omitted when the seek position was zero. The FAT filesystem has had many bugs fixed in it and, I think, is now maturing and becoming stable. These changes were verified only on the mcu123.com NXP LPC2148 board, the Hitachi SH1_LCEVB1 board, and the Linux simulator, all using a Linux development environment. Please report any errors to me. This tarball contains a complete CVS snapshot from November 16, 2008. NuttX-0.3.19 ------------ This is the 31st release of NuttX. This release includes the following new feature: * Add poll() and select() APIs that may be used to monitor for data availability on character devices or TCP/IP sockets. * Implemented support TCP/IP connection backlog. This allows select() to wake-up on new connections to a listener socket. * Added definition of a framebuffer driver and implement framebuffer drivers for the simulated platform and the TI DM320 (untested as of the initial check-in). * Partially developed a graphics framework based on the framebuffer drivers, however, this will not be ready for use for a few more releases. Currently this includes only a few color conversion routines and some rasterizing functions. A tiny windowing system is under development but not ready for check-in yet. * Added support for fixed precision math. * Added support for outgoing multicast packets. Several bugs were fixed, the most important of which are: * Fixed an important bug in the TCP/IP buffering logic. When TCP/IP read-ahead is enabled and not recv() is in-place when a TCP/IP packet is received, the packet is placed into a read-ahead buffer. However, the old contents of the read-ahead buffer were not being cleared and old data would contaminate the newly received buffer. * Changed the behavior of the serial driver read. It now returns data as it is available rather than waiting for the full requested read size. This makes functions like fgetc() work much more smoothly. These changes were verified only on the Neuros OSD (ARM9) using a Linux development environment. Please report any errors to me. This tarball contains a complete CVS snapshot from November 26, 2008. NuttX-0.4.0 ----------- This is the 32nd release of NuttX. This release adds graphics support and a tiny windowing subsystem. That new graphics subsystem is documented at http://nuttx.sourceforge.net/NXGraphicsSubsystem.html. No other substantial changes were made. These changes were verified only on the NuttX simulation platform with X11 windows simulating a device framebuffer. Please report any errors to me. The version number was bumped up to 0.4.0 in part to reflect the new graphics subsystem, but also to recognize the NuttX is approaching complete functionality. In the 0.3.x versions, network support was added, Pascal P-code runtime support was added, FAT and ROMFS filesystems were added, MMC/SD and USB device support were added. There were also numerous extensions to the NuttShell, NuttX APIs, and architecture ports. This tarball contains a complete CVS snapshot from December 6, 2008. NuttX-0.4.1 ----------- This is the 33rd release of NuttX. This is a minor bugfix release. The primary reason for this release is to correct numerous build errors that have accumulated for the ZiLOG ZDS-II based targets. All ZDS-II targets now build correctly (but have not been re-tested). In addition to platform-specific build failures, this release also adds the following features which were not tested as of the time of the release: * Board support for the ZiLog ez80Acclaim! ez80f910200zco Development Kit * ZiLOG eZ80F91 EMAC driver These changes were verified only on the NuttX simulation platform. Please report any errors to me. This tarball contains a complete CVS snapshot from February 6, 2009. NuttX-0.4.2 ----------- This is the 34th release of NuttX. This release adds no new OS features but does include support for two new architectures: * ez80Acclaim! Basic support has been integrated and verified for the ez80f910200zcog-d board (eZ80F91-based). That basic support includes timer interrupts and serial console. Ongoing work includes an EMAC driver that should be integrated for the next release nuttx-0.4.2. eZ80Acclaim! support has been in the code base for some time, but has only just been integrated due to toolchain issues. * Renesas M16C/20. Support for the Renesas SKP16C20 board has been included in the NuttX source tree. However, as the eZ80Acclaim!, testing and integration of that port is stalled due to toolchain issues. These changes were verified only on the ZiLOG eZ80910200zcog-d board. Please report any errors to me. This tarball contains a complete CVS snapshot from February 28, 2009. NuttX-0.4.3 ----------- This is the 35th release of NuttX. This release one important new OS feature and corrects and extends the eZ80 port: * Priority Inheritance. The basic NuttX waiting logic was extended to support priority inheritance. See the NuttX User Manual for further information: http://www.nuttx.org/NuttxUserGuide.html#priorityinheritance. * ez80Acclaim! Corrected several critical, show-stopping bugs on that platform including: - Errors in the serial driver interrupts. - An error in the eZ80 table. * eZ80Acclaim!: Completed integration of the eZ80F91 EMAC driver. These changes were verified only on the ZiLOG eZ80910200zcog-d board and on Cygwin-based simulation platform in various configurations. Please report any errors to me. This tarball contains a complete CVS snapshot from March 13, 2009. NuttX-0.4.4 ----------- This is the 36th release of NuttX. This release focuses on bugfixes and extending and verifying certain networking features. * Important bugs were fixed in NSH, UDP checksum calculation, UDP bind() behavior for port==0, the eZ80Acclaim! EMAC driver, Z80 interrupt handling, and in the C libraries. * Testing was extended to further verify the tiny webserver, DHCPD, wget(), and sendmail. See the Changelog for a detailed description of these changes. These changes were verified only on the ZiLOG eZ80910200zcog-d board using the ZDS-II toolchain in Cygwin-based environment. Please report any errors to me. This tarball contains a complete CVS snapshot from March 29, 2009. NuttX-0.4.5 ----------- This is the 37th release of NuttX. This release focuses on a few new features. * The basic port for the Freescale ARM920T i.MX1 processor on the Freescale MX1ADS board. Coding is complete for this port, but it is has not yet fully integrated * Extended I2C and SPI interface definitions * Add basic support for C++ applications. Very simple C++ applications can now be built against NuttX without any external libraries. At present, only the most primitive C++ programs are supported, but it is hoped that this support will be extended in future releases. See the Changelog for a detailed description of these changes. This tarball contains a complete CVS snapshot from April 19, 2009. NuttX-0.4.6 ----------- This is the 38th release of NuttX. The release features support for the Micromint Eagle-100 development board. This board is based around, the Luminary LM3S6918 MCU. This is the first ARM Cortex-M3 architecture supported by Nuttx. This initial, basic port includes timer and serial console with configurations to execute the NuttX OS test and to run the NuttShell (NSH). Work is still underway on this port and current plans are to have I2C, SSI, MMC/SD, and and Ethernet driver in the 0.4.7 release. Additional work was done on the MXADS i.MX1 port, however, that work has been set aside until I complete work on the Eagle-100 (I also need to come up with a 3V power supply). Other changes in this release include: Extensions to the SPI interface definition in order to handle 9-bit interfaces to displays. Several bugs were fixed (see the ChangeLog for a complete list of changes). This tarball contains a complete CVS snapshot from May 19, 2009. NuttX-0.4.7 ----------- This is the 39th release of NuttX. This release focuses on cleaning up and extending the Eagle100/LM3S6918 port released in nuttx-0.4.6 and on improved MMC/SD support. New features include: * Improved reliably and additional drivers for the Eagle-100 board (LM3S6918 ARM Cortex-M3). Additional drivers include Ethernet, SSI, and support for the on-board LEDs and microSD cards. * The SPI-based MMC/SD driver was extended to support SDHC Version 2.xx cards. In addition, this release includes several important bugfixes for the LM3S6918, the LPC2148, the SPI-based MMC/SD driver, and to FAT32. See the ChangeLog for details of these bugfixes. This tarball contains a complete CVS snapshot from May 29, 2009. NuttX-0.4.8 ----------- This is the 40th release of NuttX. This release adds: * Support for the Olimex STRP711 board. That board is based on the STMicro STR711 MCU (ARM7TDMI). Integration is complete on the basic port (boot logic, system time, serial console). Two configurations have been verified: (1) The board boots and passes the OS test with console output visible on UART0, and the NuttShell (NSH) is fully functional with interrupt driven serial console. An SPI driver is available but untested (because the Olimex card slot appears to accept only MMC cards; I have only SD cards). Additional needed: USB and driver, MMC integration. * Support for the CodeSourcery and devkitARM Windows-native GNU toolchains. Makefiles have been modified for the LM3S6918, LPC2148, and STR711 to support these toolchains under Cygwin. This tarball contains a complete CVS snapshot from June 13, 2009. NuttX-0.4.9 ----------- This is the 41st release of NuttX. This release adds: * Support for a new binary format call NXFLAT that can be used to execute separately linked programs in place in a file system. See http://www.nuttx.org/NuttXNxFlat.html. * Several important bugs were files related to networking and ROMFS. See the ChangeLog for a complete list. This tarball contains a complete CVS snapshot from June 26, 2009. NuttX-0.4.10 ----------- This is the 42nd release of NuttX. This released focused on the port of Jeff Poskanzer's THTTPD HTTP server (see http://acme.com/software/thttpd/). As of the 0.4.10 release, that port is still not fully complete and functional. However, numerous related bug-fixes and functional additions for THTTPD were added: * Several new standard C-library functions (fileno, strstr, strpbrk, fcntl). * Improved and extended timing APIs (mktime, gmtime, gmtime_r, gettimeofday, localtime, localtime_r, and strftime) * Networking enhancements: recvfrom() and accept() now work with non-blocking sockets. * NXFLAT extensions (exec) * Pattern matching logic. * And miscellaneous bug fixes (see the ChangeLog for details). This tarball contains a complete CVS snapshot from August 8, 2009. NuttX-0.4.11 ------------ This is the 43rd release of NuttX. This release of NuttX incorporates the verified port of Jeff Poskanzer's THTTPD HTTP server (see http://acme.com/software/thttpd/). Many of the key features of THTTPD have been tested on the Micromint Eagle-100 development board (Cortex-M3). These tests verify: * Serving of files from any file system * Execution of CGI executable. This release supports execution of NXFLAT executables on a ROMFS file system (http://www.nuttx.org/NuttXNxFlat.html) A standard CGI interface is used: Information is pasted to the CGI program via POST commands and via environment variables. CGI socket I/O is redirected to stdin and stdout so that the CGI program only need to printf() to send its content back to the HTTP client. Another value to this THTTPD integration effort has been that THTTPD has provided a very good test bed for finding NuttX networking bugs. Several very critical networking bugs have been fixed with this 0.4.11 release (see the ChangeLog for details). Networking throughput has also been greatly improved. Anyone using NuttX networking should consider upgrading to this release. This tarball contains a complete CVS snapshot from September 16, 2009 NuttX-0.4.12 ------------ This is the 44th release of NuttX. This release adds basic support for the STMicro STM32, Cortex-M3 MCU. The specific port is to the STMicro STM3210E-EVAL development board based around the STM32F103ZET6 MCU. Some highlights of this port: * This basic port includes boot-up logic, interrupt driven serial console, and system timer interrupts. * Includes a basic STMicro RIDE7 project that can be used to perform basic STM32 board bring-up (due to RIDE7 size limitations, it cannot be used for the full NuttX bring-up). * Working, Tested Configurations: the NuttX OS test and the NuttShell (NSH) example. This basic STM32 port will be extended in the 0.4.13 NuttX release. Functionality needed for complete STM32 support includes: USB device driver, LCD driver and NX bringup on the development board's display and MicroSD support. An SPI driver and a DMA support was included in this 0.4.12 release, but is not yet tested. This tarball contains a complete CVS snapshot from October 17, 2009 NuttX-0.4.13 ------------ This is the 45th release of NuttX. The release extends the support for the STMicro STM32 microcontroller. Minimal support for the STM3210E-EVAL development board based around the STM32F103ZET6 MCU was released in NuttX-0.4.12. This release adds: * A simple interface definition to support some FLASH, EEPROM, NVRAM, etc. devices. * Verified SPI operation using driver for SPI based FLASH parts M25P64 and M25P128. * Improved Cortex-M3 context switching. This should improve context switching performance be 2x in certain cases. * Added a USB device-side driver for the STM32. This is an early release of a very complex driver; some bugs are expected. * The USB driver has been verified against the USB serial device class driver. There is at least one known outstanding issue (see the full bug description in the TODO list). This release also corrects some important bugs in the early STM32 release: * Fixed several errors the prevented operation of NuttX on an STM32 development board using USART2 as the serial console. * Fixed and optimization-dependent race condition in the clock initialization. * Fixed a critical bug in the interrupt control logic that could cause interrupt operations to failed used for interrupts in a certain range. This tarball contains a complete CVS snapshot from November 4, 2009 NuttX-4.14 ---------- This is the 46th release of NuttX. The release extends the support for the STMicro STM32 microcontroller. Minimal support for the STM3210E-EVAL development board based around the STM32F103ZET6 MCU was released in NuttX-0.4.12 and extended in Nuttx-0.4.13 to include initial USB support. This completes the STM32F103ZET6 and adds: New Generic RTOS Features: * Added generic support that can be included in any block driver to provide read-ahead buffering and write buffering for improved driver performance. * Added a generic worker thread that can used to defer processing from an interrupt to a task. * Defined a generic SD/SDIO interface can can be bound to a MMC/SD or SDIO driver to provide SDIO support. * Implemented a an SDIO-based MMC/SD driver using this new SDIO interface. New STM32 Features: * Add support to configure an STM32 input GPIO to generate an EXTI interrupt. * Added support for buttons on the STM3210E-EVAL board. * Implemented an STM32 version of the common the SDIO interface. * Added a configuration to exercise the STM32 with the USB mass storage device class example. This release also corrects some important bugs in the early STM32 release: * Correct error handling in the mount() logic. * Fixed several STM32 DMA-related issues. Integrated and debugged STM32 DMA functionality that was added in 0.4.12. * Fixed several bugs in the STM32 USB device-side driver. NOTE: This version, 4.14, is equivalent to what would have been called 0.4.14 to follow 0.4.13. The zero has been eliminated from the front of the version number to avoid confusion about the state of development: Some have interpreted the leading zero to mean that the code is in some way unstable. That was not the intent. Beginning in January 2010, I will switch to the 2010.nn versioning as many others have done to avoid such confusion. This tarball contains a complete CVS snapshot from December 2, 2009 NuttX-5.0 --------- This is 47th release of NuttX and the successor to nuttx-4.14. This major revision number has been incremented to indicate that an incompatibility with previous nuttx releases has been introduced. This version adopts standard fixed width integer names as specified by the ANSI C99 standard. The core logic of NuttX is older than that standard and did not conform to it. If you have applications running on NuttX-4.14, those applications should continue to build and execute without problem on NuttX-5.0. However, if you have device drivers or other OS-internal logic, you will probably have to make some minor changes to your code to use this version. Below is a summary of those changes: * If you include sys/types.h to get the non-standard, fixed width integer types (uint32, uint16, ubyte, etc.), that is no longer necessary. * Instead, you will need to include stdint.h where the new fixed width integer types are defined (uint32_t, uint16_t, uint8_t, etc). * You will have to change all occurrences of the following types: uint32 -> uint32_t uint16 -> uint16_t ubyte -> uint8_t uint8 -> uint8_t sint32 -> int32_t sint16 -> int16_t sint8 -> int8_t * In addition, the non-standard type 'boolean' must replaced with the standard type 'bool'. The type definition for 'bool' is in stdbool.h This change in typing caused small changes to many, many files. It was verified that all configurations in the release still build correctly (other than the SDCC-based configurations). Regression testing was performed on a few configurations, but it is possible that minor build issues still exist. (If you encounter any, please let me know and I will help you to fix them.) In the course of the regression testing, several important bugs unrelated to the type changes were found and corrected. * Fixed an important error in the RX FIFO handling logic of the LM3S6918 Ethernet driver. * Corrected the handling of TCP sequence numbers in the TCP stack. * And other less important bugs as detailed in the ChangeLog. The primary focus of this release was standards compatibility, but a few new features were added including a (1) Flash Translation Layer (FTL) that will support filesystems on a FLASH device and (2) partial ports for the STM32F107VC and HCS12 C9S12NE64 MCUs. Those ports are very incomplete as of this writing. This tarball contains a complete CVS snapshot from December 21, 2009 NuttX-5.1 --------- This is the 48th release of NuttX. This release adds support for two new MCU architectures in various states of development: * AT91SAM3U (http://www.atmel.com/products/at91/sam3landing.asp?family_id=605) This release adds support for the SAM3U-EK development board with the AT91SAM3U4E MCU (http://www.atmel.com/dyn/products/product_card_mcu.asp?part_id=4562). As with most NuttX architecture releases, the release will be rolled out in two parts: A basic port and an extended port. NuttX-5.1 includes the basic port for the SAM3U-EK board. This release passes the NuttX OS test and is proven to have a valid OS implementation. It supports the basic boot-up, serial console and timer interrupts. A configuration to support the NuttShell is also included. The extended port will also include support for SDIO-based SD cards and USB device (and possible LCD support). These extensions may or may not happen by the Nuttx 5.2 release as my plate is kind of full now. * LPC3131 (http://ics.nxp.com/products/lpc3000/lpc313x.lpc314x.lpc315x/) This release also adds the complete implementation of the basic port for the NXP LPC3131 MCU on the Embedded Artists EA3131 board (http://www.embeddedartists.com/products/kits/lpc3131_kit.php). That port, unfortunately has stalled due to tools issues. Those tool issues have been resolved and I am confident that the verified basic port will be available in NuttX-5.2. The extended release will follow and should include SDIO-based SD card support and device USB. A few additional features and bugfixes of a minor nature were also incorporated as detailed in the ChangeLog. NuttX-5.2 --------- This is the 49th release of NuttX. This release completes the verification of the basic port for the NXP LPC3131 MCU on the Embedded Artists EA3131 board (http://www.embeddedartists.com/products/kits/lpc3131_kit.php). This basic port includes basic boot-up, serial console, and timer interrupts. This port has been verified on the using the NuttX OS test and includes a working implementation of the NuttShell (NSH). An extended release will follow and should include SDIO-based SD card support and device USB. NuttX-5.3 --------- This is the 50th release of NuttX. This release support for one new architecture: * A basic port for the NXP LPC2378 MCU on the Olimex-LPC2378 development board was contributed by Rommel Marcelo. And extensions to two existing architectures: * David Hewson contributed a dual-speed (full/high) USB device-side driver for the NXP LPC3131 on the Embedded Artists EA3131 development board. * A DMA driver and a high speed MCI driver for the Atmel AT91SAM3U are included (but not fully tested in this release). Two important bugfix was also included: * An important fix to the USB mass storage driver was contributed by David Hewson. * A serious error in the AT91SAM3U PIO handling was fixed. NuttX-5.4 --------- This is the 51st release of NuttX. This release includes one new, important extension to th NX graphics system (See http://www.nuttx.org/NXGraphicsSubsystem.html). NX was develop a couple years back on hardware that supported only framebuffer devices, that is, video hardware with video memory directly converts the memory content to video. However, most MCUs that NuttX focuses on do not support such video memory; rather, that typically only support LCDs via parallel or serial interfaces. This release of NuttX extends NX so that now renders directly to the LCD device via its serial or parallel interface. No in-memory copy of the screen memory need be maintained so this solution should also work in MCUs with very limited SRAM. This initial release of this feature includes the verified NX extensions plus a driver for the HX8347, 16-bit parallel LCD. This LCD supports 16-bit RGB (5:6:5). NuttX-5.5 --------- This is the 52nd release of NuttX. This release includes one new port, some new drivers and some important bugfixes: * NuttX was ported to the Luminary/TI LM3S6965 Ethernet Evaluation Kit. At present, that port includes an OS test configuration and a NuttShell (NSH) configuration with Telnet support. MMC/SD and Networking support are provided but not thoroughly verified in this release: Current development efforts are focused on porting the NuttX window system (NX) to work with the Evaluation Kits OLED display. * A NuttX Ethernet driver for the Microchip ENC28J60 SPI Ethernet chip is available in the source tree (but has not yet been fully verified because I haven't properly connected it to hardware yet). * The Olimex STR-P711 NuttX port was extended to support the ENC28J60 and some new networking configurations were added. The ENC28J60 has not been tested on the STR-P711, however, because of hardware issues (I don't think the USB powered board provides enough power for the ENC28J60 and I don't have the right wall wart yet). Along the way, external interrupt support (XTI) was added to the STMicro STR-P711 port and some important bugs were fixed in the STR-P711 SPI driver. * Added (optional) floating point support for printf(). (Contributed by Yolande Cates.) * Corrected an important UDP reference counting error. It was not a serious error, but it trigger an assertion was IS a serious error. NuttX-5.6 --------- This is the 53rd release of NuttX. This release includes one several new drivers for existing NuttX ports: * This port adds support for the RiT displays P14201 4-bpp, greyscale OLED. 4-bpp greyscale support was integrated into the NX graphics sub-system and verified using the TI/Luminary LP3S6965 Ethernet Evaluation Kit. * The M25Px driver was extended for the M24P1 FLASH part (see NOTE). * An I2C driver and (basic) SPI driver were added for the NXP LPC313x port. The I2C interface definition was extended to efficiently handle multiple I2C transfers. (Contributed by David Hewson.) As well as a few, important USB-related bugfixes (See the ChangeLog for details). This release also includes the beginnings of a port for the NXP LPC1768 MCU. However, it is too early for that port to be useful (stay tuned for a future announce of the availability of the LPC1768 port). NuttX-5.7 --------- This is the 54th release of NuttX. This release adds basic support for one new ARM Cortex-M3 architecture: * Added support for NXP LPC1768 MCU as provided on the Nucleus 2G board from 2G Engineering (http://www.2g-eng.com). * Some initial files for the LPC17xx family were released in NuttX 5.6, but the first functional release for the NXP LPC1768/Nucleus2G occurred with NuttX 5.7. * That initial basic release included timer interrupts and a serial console and was verified using the NuttX OS test. * That release includes a verified NuttShell (NSH) configuration (see the http://www.nuttx.org/NuttShell.html). * Also included are unverified SPI and USB device drivers. Further efforts include: (1) development of a DMA support library (2) SPI-based MMC/SD support (3) verification of the USB driver Watch for announcement of the completed LPC1768 port expected in NuttX-5.8. NuttX-5.8 --------- This is the 55th release of NuttX. This includes several important bugfixes: * Corrects some interrupt vectoring for the TI/Stellarix LM3S port * Correct initialization logic for NXP LPC17xxx NuttX ports: Power was not being provided to the GPIO module! * Corrected (but did not verify) implementation of the optional interrupt stack feature (all Cortex M3 architectures). * Correct a HardFault in the LPC17xx SSP driver. Additional minor fixes are also included as detailed in the ChangeLog. Several new features have been fully developed and included in this release, but full verification of most of these new features has been blocked for a variety of issues: * Added microSD support for the NuttShell (NSH) configuration in the Nucleus2G LPC1768 port. For reasons that have not yet been determined, I have not successfully accessed the microSD card as of this writing. * Two USB configurations were also added for the Nucleus2G board: One to support the USB serial device and one for the USB mass storage device. Some testing of the USB driver was performed, but full verification is stalled for an OTG style USB cable. * LEDs now work correctly on the Nucleus2G LPC1768 board. * The NuttX/uIP networking subsystem now supports IGMPv2 client. IGMP (Internet Group Multicast Protocol) network "appliances" to join into multicast groups. Outbound traffic to enter and leave multicast groups has been verified, but full verification will require a switch capable of multicast. Issues associated with the receipt of multicast packets are likely. NuttX-5.9 --------- This is the 56th release of NuttX. This release is difficult to categorize; NuttX-5.9 was really released because there were too many changes accumulating in CVS -- a few important, some unfinished implementations, and a couple of important bugfixes. * By far biggest change in this release is the complete implementation of on-demand paging support. This feature will allow you to execute large programs on a mass storage device (such as SPI FLASH) in a small RAM. All of the core on-demand paging logic was completed (see http://www.nuttx.org/NuttXDemandPaging.html) and support was implemented for the ARM-9 family. A test configuration is in place for the NXP LPC3131. It has been verified that this new logic does not interfere with normal fixed-page ARM9 operation, but otherwise this new on-demand paging feature is untested. * Add support for the CodeSourcery toolchain to the Olimex-lpc2378 port and for the Neuros OSD port. * The Neuros OSD port has been updated to work with the production v1.0 OSD (previously it only worked with the development board). * And some miscellaneous feature enhancements as detailed in the ChangeLog. This includes several important bugfixes: * NXP LPC17xx - Fixed a critical bug in the GPIO configuration logic: When attempting to set no pull-up or pull-down (floating), it would, instead, select pull-down. * TI/Luminary LM3Sxxxx - Fixed: (1) A logic error in an address table lookup. (2) GPIO port encoding the limited support to only 8 GPIO ports. * Corrected the lease time in the DHCPC implementation: It was not in host byte order. * And several other less important bugs as documented in the ChangeLog: Warnings, cornercase compilation problems, etc. NuttX-5.10 ---------- This is the 57th release of NuttX. This release includes a combination of some new features as well as several bugfixes. New features include: * TI/Luminary Stellaris LM3S9B96: Header file changes contributed by Tiago Maluta. * TI/Luminary Stellaris LM3S8962: Header file changes and support for the Stellaris LM3S8962 Ethernet+CAN Evaluation Board contributed by Larry Arnold. * On-Demand Paging Support: The basic logic for the On-Demand Paging feature is complete, implemented for the NXP LPC3131, and partially tested. See http://www.nuttx.org/NuttXDemandPaging.html. Some additional test infrastructure will be needed in order to complete the verification. See configs/ea3131/README.txt for details. * Two Pass Build Support: The make system now supports a two pass build where a relocatable, partially linked object is created on the first pass and that object is linked with the NuttX libraries to produce the final executable on the second pass. This two pass build is currently only used to support the On-Demand paging feature: The first pass link forces critical logic into the locked text region; the second pass builds the NuttX executable more-or-less as normal. * CONFIG_APP_DIR: Generalized the way in which applications are built and linked with NuttX. The new configuration CONFIG_APP_DIR replaces CONFIG_EXAMPLE. CONFIG_EXAMPLE used to identify the sub-directory within the NuttX examples/ directory that held the example application to be built. That made it awkward to configure to build an application that resides outside of the NuttX examples/ directory. CONFIG_APP_DIR is more general; it can be used to refer to any directory containing the application to be built. For people who have their own configurations and/or Makefiles, you will need to make a couple of changes: - Replace all occurrences of CONFIG_EXAMPLE=foobar with CONFIG_APP_DIR=examples/foobar in all of the configuration files. - Replace any occurrences of examples/$(CONFIG_EXAMPLE) with $(CONFIG_APP_DIR) - Replace any occurrences of lib$(CONFIG_EXAMPLE)$(LIBEXT) with libapp$(LIBEXT) in your Makefiles. - Check any other occurrences of CONFIG_EXAMPLE. * Several bugfixes are included as well as code changes to eliminate some warnings. See the ChangeLog for details. NuttX-5.11 ---------- This is the 58th release of NuttX. This is a bugfix release. * One very important bug fixes a race condition that can occur using semaphores that can be awakened by signals. Under this particular race condition, a task could hang waiting for a semaphore. * Corrections to lm3s8962 port contributed by Larry Arnold. That port is purported to work correctly with these changes in place. Plus less critical bugfixes as detailed in the ChangeLog. New features include: * A new configuration to support the mbed.org LPC1768 board. (Contributed by Dave Marples.) * A driver for the Atmel AT45DB161D 4Mbit SPI FLASH part NuttX-5.12 ---------- This is the 59th release of NuttX. This is a critical bugfix release. * Fixed an important error in the signal trampoline logic. Essentially, interrupts are re-enabled while the signal handler executes, but the logic to re-disable the interrupts before returning from the signal handler trampoline was missing. Under certain circumstances, this can cause stack corruption. This was discovered by David Hewson on an ARM9 platform, but since the code has been leveraged, the bug has been propagated from ARM to Cortex-M3, AVR32, M16C, SH1, ZNEO, eZ80, Z8, and Z80 -- almost every architecture. The correction has been incorporated for all architectures but only verified on a few. Other notable changes in NuttX-5.12: * A complete port for the AVR32 (AT32UC3B0256) is incorporated in the source tree. Testing of this port is underway now. This release was made before verifying this port in order to get the important bugfix in place. * Other miscellaneous bugfix and enhancements as noted in the ChangeLog. NuttX-5.13 ---------- This is the 60th release of NuttX. Headlines for this release include: * AVR32, www.mcuzone.com AVR32DEV1 The port for the www.mcuzone.com AVRDEV1 board based on the Atmel AT32UC3B0256 MCU was (almost) fully integrated. The port now successfully passes the NuttX OS test (examples/ostest). A NuttShell (NSH) configuration is in place (see the NSH User Guide at http://www.nuttx.org/NuttShell.html). Testing of that NSH configuration, however, has been postponed (because it got bumped by the Olimex LPC1766-STK port -- see below) Current Status: I think I have a hardware problem with my serial port setup. There is a good chance that the NSH port is complete and functional, but I am not yet able to demonstrate that. At present, I get nothing coming in the serial RXD line (probably because the pins are configured wrong or I have the MAX232 connected wrong). A complete port will include drivers for additional AVR32 UC3 devices -- like SPI and USB --- and will be available in a later release, time permitting. * LPC1766, Olimex LPC1766-STK Support for the Olimex-LPC1766 is newly added to NuttX and is still undergoing development, test, and integration. Verified configurations for the NuttX OS test and for the NuttShell (NSH, see the NSH User Guide at http://www.nuttx.org/NuttShell.html. Additional USB configurations are in the release as well, but they have not yet been verified. Goals for NuttX-5.14 include: (1) An Ethernet driver, (2) Verified USB support, and (3) SD card support. * Additional changes and bugfixes as detailed in the ChangeLog. NuttX-5.14 ---------- The 61st release of NuttX, NuttX-5.14, was made on November 27, 2010. This release includes multiple, important bugfixes as well as a new driver for the NXP LPC1766. This release corresponds with SVN release number: r3137 Important bugfixes include: * Cortex-M3 Hard Fault. Fixed a hard fault problem that can occur if certain types of interrupts are pending at the time another interrupt returns. This problem has only been observed on the LPC1766 (returning from a SYSTICK interrupt with a pending Ethernet interrupt). However, it is assumed that all Cortex-M3 ports could have this as a latent bug. * TCP/IP Sequence Number Bug. Corrected errors some important logic in the way that sequence numbers are managed when send() sends out packets before a previous packet has been acknowledged. Some of that send() logic was incompatible with logic in the uIP layer. Errors seen include: (1) The final final packet in a sequence of packets might be too large! In the THTTPD example, this might leave some garbage at the bottom of the display. Or (2) send() might hang with outstanding, unacknowledged data (and with no re-transmission requests). This was due to differences in sequence number handling in send() and in uip_tcpinput.c; uip_tcpinput.c thought (incorrectly) that all of the bytes were acknowledged; send.c knew that they were not. * One-Shot POSIX Timer Bug. Fixed an error in set-up of a one-shot POSIX timer. It was using the repetitive timer value (which is zero in the one-shot case), always resulting in a 10Ms timer! Found and fixed by Wilton Tong. Additional support has been included for the Olimex-LPC1766. Support for that board was added to NuttX 5.13. This release extends that support with an Ethernet driver. Verified configurations are now available for the NuttX OS test, for the NuttShell (NSH, see http://www.nuttx.org/NuttShell.html), for the NuttX network test, and for the THTTPD webserver. (Additional USB configurations are in the release as well, but those have not yet been verified. Goals for NuttX-5.15 (and beyond) include: (1) Verified USB support, (2) SD card support, and (3) LCD support. NuttX-5.15 ---------- The 62nd release of NuttX, NuttX-5.15, was made on December 12, 2010. This release includes several bugfixes as well as feature enhancements, primarily for the Olimex LPC1766-STK board. Important bugfixes included: * Additional fixes needed with the TCP sequence number problem "fixed" in NuttX-5.14. * In the send() logic, now checks if the destination IP address is in the ARP table before sending the packet; an ARP request will go out instead. This improves behavior, for example, on the first on the first GET request from a browser * All USB class drivers need to call DEV_CONNECT() when they are ready to be enumerated. That is, (1) initially when bound to the USB driver, and (2) after a USB reset. * The SPI_SETBITS macro was calling the SPI setmode method. * And several other bug fixes of lower importance (see the ChangeLog for details). And feature enhancements: * The LPC176x Ethernet driver was using all of AHB SRAM Bank0 for Ethernet packet buffers (16K). An option was added to limit the amount of SRAM used for packet buffering and to re-use any extra Bank0 memory for heap. * Enabled networking and SD/MMC card support in the Olimex LPC1766-STK NuttShell (NSH) configuration. * The LPC176x USB driver is now fully fully functional. * Added an optional cmddata() method to the SPI interface. Some devices require an additional out-of-band bit to specify if the next word sent to the device is a command or data. The cmddata method provides selection of command or data. * A driver for the Nokia 6100 LCD (with either the Phillips PCF8833 LCD controller and for the Epson S1D15G10 LCD controller) and an NX graphics configuration for the Olimex LPC1766-STK have been added. However, neither the LCD driver nor the NX configuration have been verified as of the this release. NuttX-5.16 ---------- The 63rd release of NuttX, Version 5.16, was made on January 10, 2010 and is available for download from the SourceForge website. This release includes initial support for USB host in NuttX. The USB host infrastructure is new to NuttX. This initial USB host release is probably only beta quality; it is expected the some bugs remain in the logic and that the functionality requires extension. Below is a summary of the NuttX USB host implementation as extracted from the NuttX Porting Guide: 6.3.9 USB Host-Side Drivers * include/nuttx/usb/usbhost.h. All structures and APIs needed to work with USB host-side drivers are provided in this header file. * struct usbhost_driver_s. Each USB host controller driver must implement an instance of struct usbhost_driver_s. This structure is defined in include/nuttx/usb/usbhost.h. Examples: arch/arm/src/lpc17xx/lpc17_usbhost.c. * struct usbhost_class_s. Each USB host class driver must implement an instance of struct usbhost_class_s. This structure is also defined in include/nuttx/usb/usbhost.h. Examples: drivers/usbhost/usbhost_storage.c * USB Host Class Driver Registry. The NuttX USB host infrastructure includes a registry. During its initialization, each USB host class driver must call the interface, usbhost_registerclass() in order add its interface to the registry. Later, when a USB device is connected, the USB host controller will look up the USB host class driver that is needed to support the connected device in this registry. Examples: drivers/usbhost/usbhost_registry.c, drivers/usbhost/usbhost_registerclass.c, and drivers/usbhost/usbhost_findclass.c, * Detection and Enumeration of Connected Devices. Each USB host device controller supports two methods that are used to detect and enumeration newly connected devices (and also detect disconnected devices): + int (*wait)(FAR struct usbhost_driver_s *drvr, bool connected); Wait for a device to be connected or disconnected. + int (*enumerate)(FAR struct usbhost_driver_s *drvr); Enumerate the connected device. As part of this enumeration process, the driver will (1) get the device's configuration descriptor, (2) extract the class ID info from the configuration descriptor, (3) call usbhost_findclass() to find the class that supports this device, (4) call the create() method on the struct usbhost_registry_s interface to get a class instance, and finally (5) call the connect() method of the struct usbhost_class_s interface. After that, the class is in charge of the sequence of operations. * Binding USB Host-Side Drivers. USB host-side controller drivers are not normally directly accessed by user code, but are usually bound to another, higher level USB host class driver. The class driver exports the standard NuttX device interface so that the connected USB device can be accessed just as with other, similar, on-board devices. For example, the USB host mass storage class driver (drivers/usbhost/usbhost_storage.c) will register a standard, NuttX block driver interface (like /dev/sda) that can be used to mount a file system just as with any other other block driver instance. In general, the binding sequence is: 1. Each USB host class driver includes an initialization entry point that is called from the application at initialization time. This driver calls usbhost_registerclass() during this initialization in order to makes itself available in the event the the device that it supports is connected. Examples: The function usbhost_storageinit() in the file drivers/usbhost/usbhost_storage.c 2. Each application must include a waiter thread thread that (1) calls the USB host controller driver's wait() to detect the connection of a device, and then (2) call the USB host controller driver's enumerate method to bind the registered USB host class driver to the USB host controller driver. Examples: The function nsh_waiter() in the file configs/nucleus2g/src/up_nsh.c and the function nsh_waiter() in the file configs/olimex-lpc1766stk/src/up_nsh.c. 3. As part of its operation during the binding operation, the USB host class driver will register an instances of a standard NuttX driver under the /dev directory. To repeat the above example, the USB host mass storage class driver (drivers/usbhost/usbhost_storage.c) will register a standard, NuttX block driver interface (like /dev/sda) that can be used to mount a file system just as with any other other block driver instance. Examples: See the call to register_blockdriver() in the function usbhost_initvolume() in the file drivers/usbhost/usbhost_storage.c. NuttX-5.17 ---------- The 64th release of NuttX, Version 5.17, was made on January 19, 2011 and is available for download from the SourceForge website. This release follows close on the heels of the 5.16 release and extends the USB host capabilities first introduced in that version. * The LPC17xx USB host controller driver was extended to (1) add support for low-speed devices, (2) handle multiple concurrent transfers on different endpoints (still only one TD per endpoint), and (3) handle periodic interrupt endpoint types. * Add a USB host HID keyboard class driver. Now you can connect a standard USB keyboard to NuttX and receive keyboard input for an application. And other changes as detailed in the ChangeLog. NuttX-5.18 ---------- The 65th release of NuttX, Version 5.18, was made on February 27, 2011 and is available for download from the SourceForge website. This is first release from the new NuttX SVN repository. This release is made primarily to keep the release tarball in synchronization with SVN. Many smaller changes have been made as identified in the ChangeLog. Headlines include: * Incorporate several important uIP patches -- including the well known patch to handle missing SYNACK. * The Freescale mc8s12ne64 port is code complete but testing has not yet begun due to toolchain issues. Added support for the Future Electronics Group NE64 Badge board. * Added support for a new STM32 board, the ISOTEL NetClamps VSN V1.2 ready2go sensor network platform. This board is based on a STM32F103RET6 and includes some interesting power saving/clock control extensions. * USB host support expanded to handle vendor specific USB devices. * Incorporated the LUFA HID parser. * Various bugfix as detailed in the ChangeLog NuttX-5.19 ---------- The 66th release of NuttX, Version 5.19, was made on March 12, 2011 and is available for download from the SourceForge website. This release includes several new features in various states of integration and maturity: * 486SX QEMU port. This port supports the Intel 486SX architecture using the QEMU simulator. Initial functionality is in place a partially tested. There are still some outstanding issues with timer interrupts. * Platform specific application support. A new apps/ directory appears in this port. This apps/ directory provides a mechanism for applications using NuttX to have a highly customized initialization process. It supports a set of end-user applications than can be executed (1) standalone so you can have a fully customized application startup, or (2) on top of NSH. Think of it this way: In a buckled-up embedded application, your end-user programs will probably have their own dedicated start-up logic. But, during development, you might want to have you applications available and executable from the NSH command line. This apps/ add-on (and NSH hooks) was contributed by Uros to accomplish just that. * NSH was also extended to support application specific ROMFS /etc/init.d/rcS start-up scripts. This feature, as well, as all of the above-mentioned apps/ directory support was contributed by Uros Platise * Additional NSH improvements and bug fixes. See the Changelog for details. * This release also provides a new SLIP network driver. This driver should support point-to-point network communications to a host using TCP/IP or UDP. This driver is code complete, but not tested in this release. * New RAMTRON FRAM driver (contributed by Uros Platise) * New generic 16550 UART driver. * Cortex-M3 Power improvements: Waits for Interrupt (WFI) in idle loop for reduced power consumption (LPC17xx and STM32 only - contributed by Uros Platise)) * New waitpid() system interface. * Additional bugfixes: pipes, stdint.h, STM32 SDIO and SPI drivers NuttX-6.0 --------- The 67th release of NuttX, Version 6.0, was made on March 21, 2011 and is available for download from the SourceForge website. The version number of this release was bumped from 5.19 to 6.0. A change in the major revision number is used to reflect an incompatibility with previous versions. In this release, the NuttX core OS functionality has been separated from NuttX application-related functionality. These are provided as separate tarballs: * nuttx-6.0.tar.gz, and * apps-6.0.tar.gz The purpose of this separation is both to better organize and modularize the NuttX source tree, but also to provide better support for incorporation of end-user applications with Nuttx. The incompatibility results from the changes to the board configuration logic needed to supported the separable application. The major changes to the configuration include: * CONFIG_APPS_DIR - This should not be set. The default is ../apps. This should only be set if you have a custom, product-specific application directory in some different location. * appconfig - Each board configuration now requires a new file called 'appconfig.' As its name suggests, this file provides new configuration information needed by the logic in ../apps. In addition to this major reorganization in the directory structure, this release also includes some important extensions to existing features and some important bugfixes. These include: * The SLIP driver was been well debugged and significantly re-designed. Now you can have an Ethernet connection to you board even if you have no Ethernet hardware. How cool is that? * The QEMU i486 port is now functional. It has also been reported to work on the Bifferboard (see http://bifferos.bizhat.com/). * And extensions to the uIP driver interface, and * Bug fixes to fopen() and STM32 GPIO configuration Please see the ChangeLog for details. NuttX-6.1 --------- The 68th release of NuttX, Version 6.1, was made on April 10, 2011 and is available for download from the SourceForge website. The 6.0 release introduced a detach-able application environment to build applications outside of the NuttX source tree. The primary purpose of this release is to correct numerous build problems introduced by that architectural change: * In many newer environments, NuttX produced strange Makefile errors but built correctly in older environments. A fix provided by Rafael Noronha was incorporated and is reported to fix those build problems. * The apps/ directory build system would not handle Windows-native toolchains due to obscure path formatting issues. * And other problems as detailed in the Changelog. Many additional changes were made in the 6.1 release for another major architectural change: NuttX will now build as a separately linked microkernel. In this build option the RTOS builds as a kernel, applications build separately and interface with kernel via system calls. Applications run in user mode and kernel logic users in kernel-mode. This provides a secure environment for NuttX. This feature is fully coded in NuttX-6.1, but has not been tested due to higher priority tasks that have arisen. Related to this change, support for the Cortex-M3 memory protection unit (MPU) has been integrated with the NuttX kernel build to provide an even higher level of security. NOTE: This kernel build is an option; the default build configuration is still the standard, flat, unsecured RTOS as in previous releases. Additional new features in this release: * Support for LPC17xx GPIO interrupts (with much support from Decio Renno). * Basic timer support for STM32 (Contributed by Uros Platise) * A binfs file system. This is a tiny pseudo file system that lets named applications to be viewed and accessed in NSH under the /bin directory. * An I2C-based driver for the LIS331DL MEMS motion sensor. (Contributed by Uros Platise.) * A configuration for the Embedded Artists LPCXpresso LPC1768 board. * The user_initialize() interface has been removed. And several bugfix associated with SD drivers, opendir(), signed 8-bit types (int8_t), and USB serial device. See the ChangeLog for details. NuttX-6.2 --------- The 69th release of NuttX, Version 6.2, was made on May 6, 2011 and is available for download from the SourceForge website. The 6.2 release includes several new features: * NXFFS: The obvious new feature is NXFFS, the NuttX wear-leveling FLASH file system. This new file system is intended to be small for the MCU usage and has some limitations. No formal documentation of NXFFS yet exists. See the fs/nxffs/README.txt file for details (see http://svn.code.sf.net/p/nuttx/code/trunk/nuttx/fs/nxffs/README.txt?view=log) * Support for NXP LPCXpresso LPC1768 board on the Embedded Artists base board. The Code Red toolchain is supported under either Linux or Windows. Verified configurations include dhcpd, nsh, nx, ostest, thttpd, and usbstorage. * Support for the Univision UG-9664HSWAG01 OLED with Solomon Systech SD1305 LCD controller. * A new RAM MTD driver with FLASH simulation capability. * A version.h file is now automatically generated so that C code can now be version aware. In addition to these new feature, several important bugfixes are included in this release correcting problems with dup2(), LPC17xx GPIO interrupts, LPC17xx UART2/3, the FAT file system, build issues, and strrch(). See the ChangeLog for more details. NuttX-6.3 --------- The 70th release of NuttX follows only a nines days after the release of version 6.2. It was released on May 15, 2011. This special back-to-back release was made so that the current released version of NuttX will correspond to the initial release from the RGMP project. This release adds architecture support and build configuration for RGMP. RGMP is a project for running GPOS and RTOS simultaneously on multi-processor platforms. See http://rgmp.sourceforge.net/wiki/index.php/Main_Page for further information about RGMP. This release also includes support for STM32 FLASH, build improvements, and initial, incomplete support for the MicroChip PIC32MX MCU. Bug fixes are included for some build problems, USB host class driver error handling, NX graphics color mapping, and problems with C standard I/O buffer flushing. See the ChangeLog for further details. NuttX-6.4 --------- The 71st release of NuttX, Version 6.4, was made on June 6, 2011 and is available for download from the SourceForge website. The 6.4 release includes several new features: * A new, full-featured FTP client. This client may be used as a library for automated FTP or via an FTP client shell. The FTP shell supports the following commands: cd, chmod, get, help, idle, login, ls, quit, mkdir, noop, put, pwd, rename, rhelp, rm, rmdir, size, time, and up. A configuration is available for the NXP LPC17xx to demonstrate this functionality. * A functional C1101 wireless driver (contributed by Uros Platise) * A PCI-based E1000 Ethernet driver (contributed by Yu Qiang) * New C library functions: inet_addr() (contributed by Yu Qiang), strndup(), asprintf() * Reduced memory allocation overhead for MCUs with small heaps (<64K). * fdopen() now works with socket descriptors allowing standard buffered C functions to be used for network communications. * The NSH ifconfig command can now be used to set or change the IP address (contributed by Yu Qiang) This release also includes some completed but untested functionality. * The MicroChip PIC32MX port is now code complete and ready to begin testing. Unfortunately, testing will be delayed due to tool issues. * Support for the NXP LPC315x MCUs. Additional miscellaneous enhancements and bug fixes to task_delete(), recvfrom(), and other changes as noted in the ChangeLog. NuttX-6.5 --------- The 72nd release of NuttX, Version 6.5, was made on June 21, 2011 and is available for download from the SourceForge website. The 6.5 release is all about support for the Atmel 8-bit AVR family. I have been interested in the AVR family for some time but because of the severe SRAM constraints and because of the availability of many tiny schedulers for the AVR, it has not been "on the radar screen." However, I have recently become interested because of interest expressed by members of the forum and because of the availability of newer, larger capacity AVR parts (that I don't have yet). This release corresponds with SVN release number: r3730 This release includes support for the following AVR boards. As with any initial support for new architectures, there are some incomplete areas and a few caveats that need to be stated. Here they are, ordered from the least to the most complete: * SoC Robotics Amber Web Server (ATMega128). This port of NuttX to the Amber Web Server from SoC Robotics (http://www.soc-robotics.com/index.htm). Is only partially in place. The Amber Web Server is based on an Atmel ATMega128 (128K FLASH but only 4K of SRAM). STATUS: Work on this port has stalled due to toolchain issues. It is complete, but untested. * Micropendous 3 AT9USB647 This port of NuttX to the Opendous Micropendous 3 board. The Micropendous3 may be populated with an AT90USB646, 647, 1286, or 1287. See http://code.google.com/p/opendous/. I have only the AT90USB647 version for testing. This version has very limited memory resources: 64K of FLASH and 4K of SRAM. STATUS: The basic port was released in NuttX-6.5. This basic port consists only of a "Hello, World!!" example that demonstrates initialization of the OS, creation of a simple task, and serial console output. The tiny SRAM limits what you can do with the AT90USB647 (see issues below). * PJRC Teensy++ 2.0 AT9USB1286 This is a port of NuttX to the PJRC Teensy++ 2.0 board. This board was developed by PJRC (http://pjrc.com/teensy/). The Teensy++ 2.0 is based on an Atmel AT90USB1286 MCU with 128K of FLASH and 8K of SRAM; a little more room to move than the AT90USB647. STATUS: The basic port was released in NuttX-6.5. This basic port consists of a "Hello, World!!" example and also slightly simplified NuttShell (NSH) configuration (see the NSH User Guide at http://www.nuttx.org/NuttShell.html). An SPI driver and a USB device driver exist for the AT90USB as well as a USB mass storage configuration. However, this configuration is not fully debugged as of the NuttX-6.5 release. AVR-specific issues. The basic AVR port is solid and biggest issue for using AVR is its tiny SRAM memory and its Harvard architecture. Because of the Harvard architecture, constant data that resides to flash is inaccessible using "normal" memory reads and writes (only SRAM data can be accessed "normally"). Special AVR instructions are available for accessing data in FLASH, but these have not been integrated into the normal, general purpose OS. Most NuttX test applications are console-oriented with lots of strings used for printf and debug output. These strings are all stored in SRAM now due to these data accessing issues and even the smallest console-oriented applications can quickly fill a 4-8K memory. So, in order for the AVR port to be useful, one of two things would need to be done: 1. Don't use console applications that required lots of strings. The basic AVR port is solid and your typical deeply embedded application should work fine. 2. Create a special version of printf that knows how to access strings that reside in FLASH (or EEPROM). NuttX-6.6 --------- The 73rd release of NuttX, Version 6.6, was made on July 11, 2011 and is available for download from the SourceForge website. The 6.6 release adds several smaller features but is mostly a bugfix release. Bugfixes include * Fixed several NX Graphics bugs: Rendering fonts at >8 bits-per-pixel, graphics move logic, and display artifacts that appear when a window is closed. * Corrections to the USB host mass storage class driver * STM32 bugfixes: serial driver, GPIO interrupt handling * LPC17xx: Changes for a success compilation with no console. * Corrections to the Teensy AT90USB SD driver * Changes for a clean compilation under the ZDS-II toolchain. Minor features: * Add logic to extract printf strings from FLASH (but there are still printf issues for that target) * Added a configuration for the Sure Electronics PIC32MX board. However, higher priority tasks have stopped work on that configuration. * Added several new configurations for the STMicro STM3210E-EVAL board. * Added support for the STM3210E-EVAL board: (1) LCD in either landscape or portrait mode, and (2) interrupting buttons. * Added a configuration option to use different serial ports for debug and for the NSH serial console (there are some issues with CR-LF expansion and character echo if NSH is not run on the console). * Standardized the button press and button interrupt interfaces so that they are common across all boards. * Added a new graphics example that focuses on placing text on the background while pop-up windows occur. Text should continue to update normally with or without the popup windows present. * Added ARM stack checking logic. See the ChangeLog for a detailed description of these changes. NuttX-6.7 --------- The 74th release of NuttX, Version 6.7, was made on August 2, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.7.tar.gz and apps-6.7.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). Changes in this release are summarized below: * New OS APIs: Add the standard sem_timedwait() interface. * FAT File System: Adds (optional) support for VFAT long file names. * USB: Now the mass storage device can be connected when needed and disconnected when not needed (or re-connected as a different kind of device). * Touchscreen Support: Defined a new NuttX touchscreen interface. Added a driver for the TI TSC2007 touchscreen controller chip. * NX Fonts: Add support for multiple fonts; developed a tool to convert open source fonts into NuttX format; Converted and installed nine new, high quality fontsets. * NX Graphics: Add new NX APIs to support drawing of wide lines in any orientation. Added new low level routines to set individual pixel more efficiently. * Build system: Added a export target that will bundle up all of the NuttX libraries, header files, and the startup object into an exportable tarball. * LPC17xx: A CAN driver was contributed by Li Zhuoyi (Lzyy). * STM32: New NX-related configurations to exercise text and graphic image displays. * C Library: Added a fixed precision atan2() math function. * Bugfixes: Serial RX overrun error, FAT upper/lower NT 8.3 name handling fixed. FAT directory allocation and initialization bug. STM32 SDIO DMA race condition bug. eZ80 UART1 serial driver errors (Paul Osmialowski) NuttX-6.8 --------- The 75th release of NuttX, Version 6.8, was made on August 19, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.8.tar.gz and apps-6.8.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). Changes in this release are summarized below: * NuttX has been ported to run on the Freescale Cortex-M4 "Kinetis" boards. Two board ports are available for (1) the Kinetis KwikStik-K40 and (2) the Kinetis TWR-K60N512 tower. * Support for RGMP 0.3. This version of RGMP now runs on the OMAP4430 (arm) pandaboard * LPC17xx CAN driver extended to support both CAN1 and CAN2 (submitted by Li Zhuoy (Lzzy)) * Fixed several critical bugs related to signal handling initialization and for signals the wake up tasks that are waiting to send or receive message queues.Both are important. (submitted by hkwilton). * drivers/can.c: Fixed a semaphore overflow problem in the CAN driver (reported by Li Zhouy (Lzzy)). * Added a new ADC driver infrastructure and TI ADS1255 driver both developed and submitted by Li Zhouy (Lzzy)). See the Changelog for additional changes included in this release. NuttX-6.9 --------- The 76th release of NuttX, Version 6.9, was made on September 11, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.9.tar.gz and apps-6.9.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release includes a few new features and several important bug fixes. The new features (some still incomplete) include: * Analog Support/ NXP LPC17xx: New DAC sub-system including ADC and DAC drivers for the LPC17xx. Extensions to the ADS1255 driver. (Contributed by Li Zhuoyi (Lzyy)) * Power Management: Added a new NuttX power management sub-system for controlling and coordinating reduced power states. At present, only verified in a simulation environment. * I2C Test Tool: A new application was added that can be used to verify and debug I2C interfaces from the NuttShell (NSH) command line. * NuttShell (NSH): In addition to the I2C test tool, a date command is now supported (if CONFIG_RTC is defined) that can be used to read and set the RTC. * NXP LPC17xx: I2C and DAC driver for the NXP LPC17xx family submitted by Li Zhuoyi (Lzyy) * Kinetis Cortex-M4: Added a SDHC driver for the Kinetis parts. Complete debug of the Kinetis SDHC driver was not completed, however, do to some higher priority tasks that forced me to stop work. * Other new drivers: Driver for I2C-based at24cxx EEPROM submitted by Li Zhuoyi (Lzyy); Driver for the LM-75 temperature sensor. Support for the LM-75 temperature sensor integrated into the SM3210E-EVAL development board. * NuttX Graphics (NX): Added new NX interfaces for drawing circles, both circle outlines and filled circles. * FLASH: Added a function that accepts the path to a block driver and then erases the underlying FLASH memory * Build System: The Make export logic now also tries to track down all architecture-specific header files and include these in the NuttX export bundle as well. Various changes and modifications so that NuttX wil build on FreeBSD using the ASH shell (submitted by Kurt Lidl). Bugfixes, order roughly on decreasing criticality include: * STM32 I2C Driver: Add resets, timeout, and other fixes to work reliably with the I2C tool. Corrected a major error introduced in NuttX 6.8. * BCH Driver. Several important bugs (noted by Li Zhuoyi (Lzyy)) were fixed. * C Library: Fixed errors in gmtime() and gmtime_r() that could lead to errors in date calculations. * Timing: Correct an error in the tv_nsec calculation that happens only config CONFIG_RTC is enabled * Build System: Use of -print-libgcc-file-name to get path to libgcc.a might select the wrong libgcc.a if a multilib toolchain is used NuttX-6.10 ---------- The 77th release of NuttX, Version 6.10, was made on October 6, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.10.tar.gz and apps-6.10.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4028 This release includes a few new features and several important bug fixes. The new features (some still incomplete) include: * CDC ACM serial class device-side driver * RTC: Now supports hi-res and lo-res hardware RTC. The lo-res RTC runs at 1Hz. * STM32 I2C driver. Now supports faster, polled mode of operation. Added an I2C trace capability. * ADS7843E touchscreen driver. As used on the SAM3U-EK development board. * AT91SAM3U SPI driver. To support the ADS7843E toucscreen * X11 Support on simulation target. Build errors in the X11 windows for the simulated target have been correct. Added support for a simulated touchscreen on the X11 window (based on mouse inputs). * System Timer. Added support for a 64-bit system timer. * TIFF Support. Added a TIFF library (currently used for storing LCD screen shots). * LCD Support. Added a test to verify that we read and write correct to LCD GRAM memory. * I2C tool. Extended to support to include a verify command and repititions and auto-address increment for most commands. * USB terminal example. Line oriented serial bridge connects a host USB serial terminal to a host UART serial terminal. * Build System. apps/ Makefile will now include external directories in the application build. Bugfixes, order roughly on decreasing criticality include: * Message Queues. Correct errors in mq_timedsend() and mq_timedrecieve(). * FAT. Writes that cross sector boundaries, stray write into the FAT, and a FAT long file name issue * NXFFS. Added a missed error check. Files cannot be opened for writing if they are already opened for reading. * Library: fopen() for append modse was not appending. * STM32 I2C driver. Correct another conflict between concurrent FSMC and I2C1 accesses. Fixed some bad error detection logic. * STM32 SDHC driver. Interrupts were being left disabled. NuttX-6.11 ---------- The 78th release of NuttX, Version 6.11, was made on November 12, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.11.tar.gz and apps-6.11.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4090 This release is a maintenance release that includes a few new features and some important bugfixes. New features include: * NX Graphics: New interfaces to read from graphics memory * Drivers: AT24 FLASH driver will now supports clustering of blocks to achieve a larger, more usable block size for NXFFS. * STM32: LCD color corrections * PIC32: Board configuration for the Microchip PIC32 Ethernet Starter kit (not yet verified), new GPIO support library, button and LED support for the Sure Electronics PIC32MX board. A lot of progress has been made on the PIC32 NuttX port, but it is still not ready for prime time. * NXP LPC3152: Board configuration for the Embedded Artists EA3152. Bugfixes, order roughly on decreasing criticality include: * NXFFS: Corrected critical bugs in initialization, some full FLASH handling, and errors in certain cases where the FLASH is repacked. * ARM EABI: Fix stack aligment required for passing floating point values. * Build system: Fix build issues when g++ is used as the compiler. * NX Graphics: Bitmap error handling, correct RGB color conversion macros, Error when the background window is released. * STM32: RTC build fixes, LCD color corrections * Simulation target: build fixes * C Library: fclose() return value. See the change log for more detailed information. NuttX-6.12 ---------- The 79th release of NuttX, Version 6.12, was made on December 6, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.12.tar.gz and apps-6.12.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4141 New features in this release include: * STM32. Basic support added for the STM32 F4 family. Board support verified for the STMicro STM3250G-EVAL board. * FAT. Enhanced partition handling. * SDIO-Based SD Card support. Add support for large (>4Gb) devices * Graphics. Added four new small sans serif fonts. * Drivers. Fix a banding problem with the R61580 LCD. Bugfixes, order roughly on decreasing criticality include: * FAT. Fix errors in how the first entries in the root directory are added. Fix errors in FAT date/time handling. * Signals. Fix bug in certain sig_timedwait() error handling. * Drivers. Fix cloned errors in poll() handling in several drivers. * Message Queues. errno was not being set correctly by mq_notify(). * C Library. wchar_t is a built-in type for C++ NuttX-6.13 ---------- The 80th release of NuttX, Version 6.13, was made on December 26, 2011 and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.13.tar.gz and apps-6.13.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4231 New features in this release include: * Drivers. New standard interface for PWM drivers and common "upper half" PWM driver. Updated the MP25x driver to support the Macronix MX25 chips (submitted by Mohammad Elwakeel). * STM32 F1/F4. Added an Ethernet driver, ADC drivers, DAC driver, PWM driver, CAN driver, F4 RTC driver, F4 DMA support, logic for saving/restoring F4 FPU registers in context switches. * STM32 Boards. Added STM3240G-EVAL DHPCD and nettest configuration. Support for a new STM32 board, the HY-Mini STM32v board, was contributed by Laurent Latil * PIC32. The port to the Microchip PIC32MX is finally functional and reliable. The NuttX PIC32 port has verified configurations for the OS test and the NuttShell (NSH) both exist. * Tests: New re-usable tests (in apps/examples) for PWM, ADC, and CAN loopback. Several existing tests can now be built as NSH built-in applicaitons (dhcpd, nettest, and all of the new tests). Bugfixes, order roughly on decreasing criticality include: * STM32: Correct handling of data overrun conditions. Existing logic would hang with infinite interrupts when a data overrun occurred. * DHCPD. Fix several problems using host order address where network addresses expected (and vice versa). And several others. See the ChangeLog for more details. NuttX-6.14 ---------- The 81st release of NuttX, Version 6.14, was made on January 15, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.14.tar.gz and apps-6.14.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4301 New features in this release include: * Drivers. The upper-half PWM driver will now support a pulse count (as would be needed to control a stepper motor). * STM32. The CAN driver has been verified in loopback mode. ADC driver support for the STM32 F4. Add support for UART4-5 and USART6 (Contributed by Mike Smith). The PWM driver now supports a pulse count for TIM1 and TIM8. Timer driver now supports the F4's 32-bit timers (Contributed by Mikhail Bychek) * STM32F4Discovery. Support for the STM32F4-Discovery board contributed by Mike Smith. * STM3240G-EVAL. Add support for user control of LEDs. * LPC17xx. Add support for loopback mode to CAN driver. CAN TX done perations are now interrupt driver. Now supports configurable CAN bit rate. * LPC1766-STK. Add support for on-board buttons. Add support for user control of LEDs. * LM3S. Add support for the LM3S6432S2E on the TI RDK-S2E (Contributed by Mike Smith) * PIC32MX. USB device-side driver (needs further testing). A partial Ethernet driver is also in place. * Library. Support added for fixed floating point fieldwidths in output formatting (Contributed by Mikhail Bychek) * Build. New targets apps_clean and apps_distclean to simplify working with application diretories. Bugfixes include: * Drivers. Fixed a buffer-full test in the upper-half CAN driver. * STM32. GPIO initialize logic (submitted by Mike Smith). Fix the debug logic that dumps the GPIO configuration. * LPC17xxx. Correct an integeter overlow in GPIO interrupt setup (prevented pins > 15 from being used as interrupt sources). Correct a value used in GPIO interrupt number range test. * FAT. Now returns the correct error value when it is unable to recognize the file system. * Build. MAC OS build fixes (submitted by Mike Smith) And several others. See the ChangeLog for more details. NuttX-6.15 ---------- The 82nd release of NuttX, Version 6.15, was made on February 12, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.15.tar.gz and apps-6.15.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4387 New features and extended functionality: * General Drivers: Add support for (29-bit) extended CAN IDs. Add an infrastructure to support battery drivers. Add a driver for MAX17040x battery "fuel gauge". Add support for Composite USB drivers (in particular for a CDC/ACM with MSC USB composite driver). Added a new RAM logging driver. This will allow debug output into a RAM buffer associated with a character driver at /dev/syslog. Added the new command 'dmesg' to NSH that can be used to dump the current contents of the log. This is useful for systems that do not have the usual serial console (for example, if you only have a Telnet console with NSH). * Networking: Add a lower level, primitive socket interface. Telnet driver: A New Telnet daemon was created. It wraps a Telnet session within a character driver that can serve as a "controlling terminal." The Telnet session will then be inherited by tasks created from the Telnet session and the stdin/stdout from the created task will still go through the same Telnet connection. * STM32 Drivers. PWM driver pulse count was limited to 128; now is (essentially) unlimited. Add support for (29-bit) extended CAN IDs. Add support for I2C3. The SDIO driver is (mostly) verified on the STM32 F4 platforms. * LPC17xx Drivers. Extended the CAN driver so that the TSEG1 and TSEG2 bit times can be set via the NuttX configuration. Add support for (29-bit) extended CAN IDs. * PIC32 Drivers. The PIC32 Ethernet driver is code complete (but still untested). * FTPD. Add a new FTP server daemon. This is based loosely on the hwport_ftpd library provided by Jaehyuk Cho. * Library: Add support for on_exit(). Implemented tcsetattr() and tcgetattr(). Moved the old, too-smart fgets() to a new application library function called readline(). Dumbed down the original fgets(). Add strcasestr(), avsprintf(), inet_ntop(), and inet_pton(). Add support to enable or disable debug output. * Build system: Support for building a 32-bit simulation executable on a 64-bit Linux machine. Correct a dependency issue in the arch/*/src/board directory. Bugfixes: * System: Correct PTHREAD_MUTEX_INITIALIZER * FAT: Fix an error in the FAT statfs() reported by David Sidrane. * STM32: Fix clock frequencies for APB2 timers. Correct AFIO register offset. * PIC32. Correct GPIOs used for LEDs on the Sure PIC32MX board. * NSH. Wait for a USB connection if a USB serial class is used to interface with the host. Additional bugfixes, name changes, and other differences as detailed in the ChangeLog. NuttX-6.16 ---------- The 83rd release of NuttX, Version 6.16, was made on March 10, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.16.tar.gz and apps-6.16.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4475 New features and extended functionality: * ARMv7M Support: Includes new, streamlined Cortex-M exception handling provided by Mike Smith. Context switching support for the Cortex-M4 FPU registers is now provided (in both "lazy" and "non-lazy" modes) * General Drivers: Added a generic "upper half" Quadrature Encoder driver. The USB CDC/ACM serial driver can now be dynamically connnected or disconnected from the host (programmatically or using NSH commands). * STM32 Drivers: Added a "lower half" Quadrature Encoder driver. Verified the STM32 F4 DMA driver; Added F4 DMA support to the existing STM32 SDIO driver. * STM32 Board Support. Added support for the STM32 F2 family and for the STM3220G-EVAL board (contributed by Gary Teravskis). Support is now included for C++ static constructors (verified using the Atollic toolchain). Added support for the SRAM available on the STM3240G-EVAL board. * PIC32 Drivers. PIC32MX USB (device) driver is now functional. The PIC32MX Ethernet driver not yet fully verified (and an unverified SPI driver is also available). * Networking. Added a lower-level, thread-independent socket layer. Parts of this layer were created in 6.15 to support the FTPD controlling terminal; this support has been extended in order to support an NFS file system (not yet released). * NuttShell (NSH). NSH will now support a USB serial connection for the console (such as CDC/ACM). This is useful in environments where there is no physical serial port on the board. * Build System. Reorgnaization of networking header files. Critical Bugfixes. The following bug fixes are considered critical: * Networking: Fixed a "leak" in the TCP/IP read-ahead buffering logic. Corrected an error in TCP/IP sequence numbering/ACK logic which occurred when read-ahead buffering memory is exhausted. * STM32 Drivers: Fixed an buffer sizing error in the STM32 Ethernet driver. Additional Bugfixes: Other important bug fixes are listed below. See the ChangeLog of a complete, detailed list of bug fixes. * Networking: Corrected recv()/recvfrom() return value. Added logic to monitor for loss of connection after a new connection has been established via accept() (Contributed by Max Nekludov). Add logic to select() to correctly handle POLLHUP (Contributed by Max Nekludov) Additional bugfixes, name changes, and other differences as detailed in the ChangeLog. NuttX-6.17 ---------- The 84th release of NuttX, Version 6.17, was made on April 14, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.17.tar.gz and apps-6.17.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4607 New features and extended functionality: * Networking: Additional low-level, thread-independent socket interfaces (for NFS client support). * RTC: Added a new interface call clock_synchronize(). This function will reload the system time from an RTC and is required when the system re-awakens from certain deep-sleep modes. * Graphics: Add NxConsole. This is a character device driver that wraps an NX window and can be re-directed for stdout. This allows, for example, a pop-up graphics window that contains a NuttShell (NSH) session. A test of NxConsole is available at apps/examples/nxconsole. * Watchdog Drivers: Added an interface definition an "upper half" driver to support watchdog timers. * Calypso: Support for TI Calypso-based cellphones (as supported by the Osmocom-BB project) was contributed by members of the Osmocom-BB team. This includes configurations for the Compal e88 and e99 phones. * USB Device Interface: Needed to extend the USB device interface because there was no mechanism for passing endpoint OUT data that may need to accompany a setup request. * STM32 drivers: Added some power management controls for entering reduced power consumption states. An OTG FS driver was completed and partially verified (this driver seems to be functional but since it has been test so lightly, it might better be listed in the next section "Work in progress"). * PIC32 drivers: The PIC32 Ethernet driver is now stable. The PIC32 USB device controller driver is now functional (but not yet stable). * PIC32 boards: Added support for the Sure DB-DP11212 PIC32 General Purpose Demo Board. There is now a PIC32 Starter Kit that provides NSH only through a Telnet connection. * Build System: Some header files were moved into include/nuttx. The goal is to move any non-standard header files to include/nuttx or include/arch. Moved include/math.h to include/nuttx/math.h; this file is now only instantiated as the 'system' math.h if CONFIG_ARCH_MATH_H=y is defined. * Tools: Added tools/cmpconfig.c, a tool for comparing two configuration files. Work in progress. This release includes some partially completed work that is still not ready for prime time. * NFS Client: Work is progressing on support for an NFS client file system. This is a port of the BSD NFS client file system that is being done by Jose Pablo Rojas V. * Automated Configuration: Automated configuration based on the kconfig-frontends tool is being incorporated into the build system. The configuration is still not complete enough for general use in this release. * STM32 Drivers: Added files that will (eventually) hold an STM32 OTG FS host driver. This is still a work in progress. Bugfixes: * Networking: Corrected a deadlock that only occurred when executing the NSH 'ifconfig' command over Telnet. * File system: Fix incorrect return errno value from read() when the file is opened write-only. * Graphics: Fix several compilation errors that have crept into the multi-user NX server because of lack of use. * STM32: In order to use CAN2, both CAN1 and CAN2 clocking must be enabled. Fixed a troublesome bug in the STM32 F4 I2C driver that resulting in timeouts. * LPC17xx: Fixes for errors the crept in the LPC17xx DAC logic Contributed by Lzyy). * Build System: Reordered the link command line to account for new versions of libgcc.a that require symbols from the application (abort()). NuttX-6.18 ---------- The 85th release of NuttX, Version 6.18, was made on May 19, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.18.tar.gz and apps-6.18.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). The majority of changes in this release are focused on supporting the synchronized release of NxWM, the NuttX tiny window manager. That window manager is released as part of the NxWidgets package, but depends upon many of the changes in this NuttX release. This release corresponds with SVN release number: r4751 New features and extended functionality: * Drivers. Added a watchdog timer driver infrastructure. Add general support for STMicro STMPE811 I/O Expander/touchscreen device. * STM32. Add support for the STM32 IWDG and WWDG watchodog timers. DMA now supports cicular buffer mode; serial driver now uses circular DMA to improve Rx performance (Contributed by Mike Smith). * STM3240G-EVAL Board. Add support for the LCD and for the STMPE811 I/O Expander as a touchscreen controller. * PIC32 Boards. Board support for the Mikroelektronika PIC32MX7 Multimedia Board (MMB) and for the Sparkfun UBW32 PIC32 board. * NX. Framed windows are now draw in three colors instead of just two. Numerous other extensions needed to support NxWM (see the ChangeLog for details). * Library. Add prctl() command that can be used to setting and getting the names of threads. This (plus several other improvements and bug fixes) are part of a larger effort to improve task monitoring capabilities. Work in progress. This release includes some partially completed work that is still not ready for prime time. * NFS Client. Work is progressing on support for an NFS client file system. This is a port of the BSD NFS client file system that is being done by Jose Pablo Rojas V. * Automated Configuration. Automated configuration based on the kconfig-frontends tool is being incorporated into the build system. The configuration is still not complete enough for general use in this release. * STM32 Drivers. Added files that will (eventually) hold an STM32 OTG FS host driver. This is still a work in progress. Bugfixes (see the change log for details) : * sched_setscheduler() return value (Contributed by Richard Cochran). * stdio. Ignore CONFIG_STDIO_LINEBUFFER if the file was opened in binary mode. * fopen(). Correct an error in parsing open mode string. * serial driver. Improved performance be reducing the amount of time that Rx interrupts are disabled. * recvfrom(). Fix a compilation problem. * CDC/ACM device driver. Fix an infinite loop that occurs when the serial device is unregistered. * STM32 OTG FS device driver. Numerous fixes and the driver is partially functional but there are still some issues that become apparent when debug output is disabled. * fcntl(). Always returned zero on success; however, some fcntl commands need to return non-zero values on success. * graphics: Many multi-use mode fixes added to support NxWM (see the ChangeLog for details). Auto-raise is temporarily disabled in multi- user mode because it causes some problems with NxWM. * on_exit(): Fix compilation errors if CONFIG_SCHED_ONEXIT is enabled. NuttX-6.19 ---------- The 86th release of NuttX, Version 6.19, was made on June 15, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.19.tar.gz and apps-6.19.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4847 This release features new support for a Network File System (NFS) client. This feature allows a tiny, embedded MCU to mount a remote file system exported by an NFS server and then to access the file system as it would any local file system. Then the tiny MCU can effectively have terabytes of storage! This might be useful for data collection, for MCU configuration information, for software updates, for providing modular, loadable code modes, controlling a "farm" of MCUs, ... there are many possibilities and opportunities for innovation! The NuttShell (NSH) now supports the following command: nfsmount That command will mount the remote NFS server directory at on the target machine. is the IP address of the remote server. The NFS development was the graduation project of Jose Pablo Rojas V. who is a student at the Instituto Tecnológico de Costa Rica (ITCR, or TEC). A lot of effort went into understanding what a tiny, embedded NFS client should do and getting the target resource usage to a bare minimum. Only around a kilobyte or so of memory is required to run the NFS client (and most of that for I/O buffers). Jose Pablo has spent several months living with NFS and should be congratulated. Additional new features and extended functionality: * Drivers: SSD1289 LCD driver, MIO283QT2 LCD driver * LM3S: Additional register definition header files (contributed by Max Neklyudov). * STM32 Boards: The STM32F4Discovery will now support an SSD1289 LCD, The STM3220G-EVAL board support is now equivalent to the STM3240G-EVAL board support. * PIC32 Boards: The Mikroelektronika PIC32MX7 MMB board port is now functional, very complete, and stable. * Graphics: The NxConsole will now take keyboard input from the NX graphics subsystem. This means that if there are multiple NxConsole windows, only the top instance that has focus will receive the keyboard input. * apps/: Add the capability to use an arbitrary USB device as the console (not necessarily /dev/console). Additional enhancements for USB consoles. Added the 'mv' command. Work in progress. This release includes some partially completed work that is still not ready for prime time. * Automated Configuration. Automated configuration based on the kconfig-frontends tool is being incorporated into the build system. The configuration is still not complete enough for general use in this release. * STM32 Drivers. Added files that will (eventually) hold an STM32 OTG FS host driver. This is still a work in progress. Bugfixes (see the change log for details) : * General: sleep() and usleep() return values, sig_timedwait() errno setting on timeout. * Drivers: STMPE811 touchscreen driver, USB PLC2303, USB CDC/ACM * STM32: Several USB device controller driver fixes, F4 interrrupt priorities (contributed by Mike Smith). * Graphics: Keyboard input, fill trapezoid bug As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.20 ---------- The 87th release of NuttX, Version 6.20, was made on July 12, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.20.tar.gz and apps-6.20.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r4937 Additional new features and extended functionality: * Power Management: An evolving power management example is being created by Diego Sanchez. This effort currently involves on the STM32 F1 but clearly demonstrates the NuttX power management system which will automatically drive the system to lower power usage states due to lack of use. * Drivers: Added a driver for the SST 25 SPI-based FLASH parts. * PIC32: Added support for the PIC32MX1 and PIC32MX2 families. Added support for the microchipOpen and Pinguino toolchains. * NXP LPC43XX: Added support for the entire LPC43xx family * PIC32 boards: Added support for the DTX1-4000L "Mirtoo" module from http://www.dimitech.com/ (PIC32MX2). * NXP LPC43XX Boards: Added support for NGX LPC4330-Xplorer board. * NXP LPC17XX Boards: Added support for Micromint Lincoln60 board (LPC1769). * LM3S Boards: Add a configuration to support the TI/Stellaris EKK-LM3S3B96 development board. Contributed by Jose Pablo Rojas V. * Library: NuttX now supports platform-specific stdarg.h header files. Work in progress. This release includes some partially completed work that is still not ready for prime time. * Automated Configuration. Automated configuration based on the kconfig-frontends tool is being incorporated into the build system. The configuration is still not complete enough for general use in this release. * STM32 Drivers. Added files that will (eventually) hold an STM32 OTG FS host driver. This is still a work in progress. Bugfixes (see the change log for details) : * PIC32: GPIO output configuration (critical bug) * STM32: Typos in pin mapping files. * LM3S: Fixed an optimization related but that caused slow start-up times if optimization was disabled. * Library: Fixed signed extension but in all limit.h files (reported by Lorenz Meier). inet_ntoa compilation failure on Z80. As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.21 ---------- The 88th release of NuttX, Version 6.21, was made on August 25, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.21.tar.gz and apps-6.21.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5052 Additional new features and extended functionality: * Core: Add support for multiple registered atexit() functions. Syslog extended: Now any character driver may be used for the debug logging device. Mountpoint traversal logic. * Drivers: Added support for the TI PGA112-7 amplifier/multiplexor. * LPC43xx: Added clock ramp-up logic to run at 204 MHz * LPC43xx Drivers: SPIFI block driver, RS-485 support, Minimal termios support. Framework for USB0 device controller driver. * LPC17xx Drivers: Minimal termios support * STM32: Support for STM32 F1 "Value Line" (contributed by Mike Smith). Add support for STM32 F107 "Connectivity Line" (contributed by Max Holtzberg). Clock restart logic needed for recovery from low power modes. * STM32 Drivers: RTC alarm support. Usable for wakeup from sleep mode, Minimal serial termios support. USB OTG FS host driver (alpha). * STM32 Boards: Add power management hooks for the STM32F4Discovery, Add support for the Olimex STM32-P107 (contributed by Max Holtzberg). * PIC32: Add support for the Pinguino MIPS toolchain. * PIC32 Drivers: GPIO driver now supports F1 analog regiaters (ANSEL). * PIC32 Boards: Add support for the PGA117 on the Mirtoo module. * Calypso: Add support for the SSD1783 LCD on the Compal E99. * Library: cfsetispeed(), cfsetospeed(), tcflush(), memchr(), and memccpy(). * Applications: Port of freemodbus-v1.5.0. Add support for testing devices with multiple ADC, PWM, and QE devices. NSH: NSH 'mount' command (with no arguments) will now show mounted volumes. Add new NSH 'df' command. Extended 'help' support. NSH now catches the return value from spawned applications (provided by Mike Smith). * Build System: mkconfig will not define CONFIG_DRAM_END. A lot of progress has been made on the automated NuttX configuration logic (Thanks go to Richard Cochran). * Documentation: Document ways to customize the behavior of NSH. Bugfixes (see the change log for details) : * Serial drivers (all): Fix ioctl return value. Common "upper half" serial driver will now return with EINTR if a serial wait is interrupted by a signal. * FAT: Fix statfs() file name length. * LPC43xx: Clock configuration. * STM32: Pinmap fixes, SPI driver re-initialization * STM32 Boards: Correct and lower SDIO frequency for F2 and f4 boards. * AVR: C++ build issues. * PM: Fix a place where interrupts were not be re-enabled. * Applications: NSH application start-up race conditions. * Library: Fieldwidth and justification for %s format. Fixed several issues with presenting floating point numbers. NULL definition for C++ As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.22 ---------- The 89th release of NuttX, Version 6.22, was made on September 29, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.22.tar.gz and apps-6.22.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5206 Note that all SVN information has been stripped from the tarballs. If you need the SVN configuration, you should check out directly from SVN. Revision r5206 should equivalent to release 6.22 of NuttX 6.22: svn checkout -r5206 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Or svn checkout -r5206 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Additional new features and extended functionality: * RTOS: Application entry point is no longer user_start, but can be configured using CONFIG_USER_ENTRYPOINT. NuttX now supports two work queues: A lower priority work queue (for extended processing) and a higher priority work queue (for quick, high priority operations). * Memory Management: Added a new granule-based allocated that can be used to manage, aligned and quantized DMA memory. * File System: Add hooks to allocate I/O memory with and external allocated (need if required by DMA). * Networking: ENC28J60 driver is (finally) verified. * Drivers: Add hooks USB device drivers to allocate I/O memory with and external allocated (need if required by DMA). Driver for the Windbond SPI FLASH family (W25x16, W25x32, W25x64, and others). ADS7843E driver extended for TSC2046 and XPT2046 and verified. * ARMv7-M: Added logic to reset the MCU using the NVIC. * STM32: Add support for STM32F103VET6. * STM32 Drivers: Add logic to re-initialize UARTs a second time to enable DMA (Mike Smith). I2C driver error recovery (Mike Smith). * STM32 boards: Support for USB host added add to several configurations (or at least explained in README files). Support for the Shenzhou STM32F107 board (see www.armjishu.com). Support for M3 Wildfire STM32F103 board (v2 and v3). * Build System: Kconfig string de-quoting logic. Remove comments from defconfig files (Kate). Add tool to create NuttX-style symbol tables. Numerous changes to configuration logic as needed for the new mconf-based configuration (much of this from Richard Cochran). Refactor common Make.defs logic into tools/Config.mk (Richard Cochran). * Library: Configurable terse output from strerror(). Added perror() (Kate). Add %n format to sscanf() (Kate). * Applications: Numerous changes and extensions to the old uIP web server (from Kate and Max Holtzberg, see the ChangeLog for specific extensions). UDP network discovery utility (Max Holtzberg). Embeddable Lightweight XML-RPC Server (http://www.drdobbs.com/web-development/an-embeddable-lightweight-xml-rpc-server/184405364, Max Holtzberg). Bugfixes (see the change log for details). Some of these are very important (marked *critical*): * RTOS: Fixes to priority inheritance logic (*critical*). waitpid() critical section. Assertion in work_cancel() (Mike Smith). mmap() (Kate). * FAT File System: Improper Boolean expression caused un-necessary writes and performance issues (*critical*, Ronen Vainish). * Networking: Remove an un-necessary delay from recvfrom(). This greatly improves network performance (*critical*, Max Holtzberg). * Graphics: NX parameter checking errors. * Drivers: Fix double release of memory in SDIO-based, MMC/SD driver (Ronen Vainish). * LPC17xx: Ethernet driver fixes needed for certain PHYs (Kate). * AVR: Fix build error (Richard Cochran). * STM32: USB OTG FS host driver NAKing an retries. Power management compilation errors (Diego Sanchez). Missing SPI3 remap logic. * STM32 Drivers: Fix for Ethernet errata for STM32F107 (*critical*). Ethernet buffer alignment check. Add "kludge" to Ethernet driver to handle DM9161 PHY which (at least on the Shenzhou board), sometimes does not come up correctly. * Applications: THTTPD (Kate). NSH ping when IP address is on a different network (Darcy Gong). * Library: fread(), fflush(), fdopen(): Fix error handling logic (Ronen Vainish). Fix some field-width handling issues in sscanf() As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.23 ---------- The 90th release of NuttX, Version 6.23, was made on November 5, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.23.tar.gz and apps-6.23.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5313 Note that all SVN information has been stripped from the tarballs. If you need the SVN configuration, you should check out directly from SVN. Revision r5313 should equivalent to release 6.23 of NuttX 6.23: svn checkout -r5313 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Or svn checkout -r5313 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Additional new features and extended functionality: * RTOS: If both atexit() and on_exit() are enabled, use on_exit() to implement atexit(). Updates for RGMP 4.0. * Binfmt: Add support for loading and executing ELF binary modules from a file system. * Drivers: Maxim MAX11802 touchscreen controller (Petteri Aimonen) * STM32 Driver: Implementation of /dev/random using the STM32 Random Number Generator (RNG). * STM32 Boards: ADC support for the Shenzhou IV board. Relay support for the Shenzhou IV board. * C Library: Support is now included for the add-on uClibc++ C++ standard library support. This includes support for iostreams, strings, STL, RTTI, exceptions -- the complete C++ environment. (uClibc++ is provided as a separate add-on package due to licensing issues). Optimized generic and ARM-specific memcpy() function. Optimized memset() function. Add support for ferror(), feof(), and clearerror(). Add support for __cxa_atexit(). Math Library: Port of the math library from Rhombus OS by Nick Johnson (Darcy Gong). * Applications: New NSH commands: ifup, ifdown, urlencode, urldecode, base64enc, bas64dec, md5 (Darcy Gong). Add support for NSH telnet login (Darcy Gong). Enancements to NSH ping command to support pinging hosts with very long round-trip times. Extensions to the ifconfig command Darcy Gong), Many extensions to the webclient/wget and DNS resolver logic from Darcy Gong. JSON, Base64, URL encoding, and MD5 libraries contributed by Darcy Gong. New examples: ELF loader, JSON, wgetjson, cxxtest, relays. Bugfixes (see the change log for details). Some of these are very important (marked *critical*): * Drivers: W25 SPI FLASH * STM32 Drivers: ADC reset * Graphics: Missing implementation of the blocked method (*critical*, Petteri Aimonen). * C Library: Floating point numbers in printf and related formatting functions (Mike Smith), cf[get|set]speed() (Mike Smith) As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.24 ---------- The 91st release of NuttX, Version 6.24, was made on December 20, 2012, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.24.tar.gz and apps-6.24.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5447 Note that all SVN information has been stripped from the tarballs. If you need the SVN configuration information, you should check out directly from SVN. Revision r5447 should equivalent to release 6.24 of NuttX 6.24: svn checkout -r5447 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Or (HTTP): svn checkout -r5447 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Additional new features and extended functionality: * RTOS: - Implemented the POSIX pause() function (still has some compiance issues). - Tasking logic is extended to support the notion of address environments. An address environment is the key notion underlying "process" vs. tasks. If tasks are created with address environments (by binfmt), the OS will propogate that environment to child threads and will destroy the address environment when the "process" exists. - If support for the PATH variable is enabled, the OS start up logic will create an initial environment containing the default PATH setting (CONFIG_PATH_INITIAL). This initial PATH will then be inherited by all tasks. * Binfmt - The NuttX binary loaders have been updated to support the PATH environment variable. Now, if the PATH is properly defined, programs can be executed from mass storage using only the file name. This feature is added to support more standard behavior (eventually, NSH will support execution of programs in file systems by just entering the file name, perhaps in 6.25?). - The NXFLAT and ELF binary loaders have been extended to create address environments for any new tasks executed from the file system. This feature requires that the architecture support a memory management unit (MMU) and the address environment interfaces declared in include/nuttx/arch.h (currently, this is only supported by the z180). * Drivers: LCD driver for the Univision UG-2864AMBAG01 OLED * STM32: Support for STM32F100 high density chips contributed by Freddie Chopin. * STM32 Drivers: Added optional RS-485 direction bit control (from Freddie Chopin). * STM32 Boards: - Support for generic STM32F100RC board contributed by Freddie Chopin. - stm32f4discovery/nxlines: STM32F4Discovery support for the UG-2864AMBAG01 OLED. - stm32f4discovery/winbuild: A version of the NuttX OS test configured to build natively on Windows. - stm32f4discovery/elf: Now uses the PATH variable to find ELF executables. - configs/cloudctrl: Added for Darcy Gong's CloudController board * PIC32 Boards: Update the Mirtool configuration for Release 2 of the Mirtoo module. * Calypso: Add Calypso keypad driver. From Denis Cariki. * ZiLOG: - Add support for the z180 chip family and, specifically, for the P112 retro hardware (see http://p112.feedle.net/). - All ZiLOG configurations updated to use the current ZDS-II and/or SDCC toolchains. * Graphics: - Add a semaphore handshake so that operations on buffers from the NXMU client will be blocked until the NX server operates on the buffer data (from Petteri Aimonen). - nxtk_subwindowmove() and nxtk_getwindow(): Improvements to clipping logic from Petteri Aimonen. * C Library: lib/ sub-directory renamed libc/ (there is a new lib/ sub- directory that is used to hold all archives). * C++: Exception stubs from Petteri Aimonen. * Applications: - Add NSH hexdump command to dump the contents of a file (or character device) to the console (contributed by Petteri Aimonen). - Extend the NSH ifconfig command plus various DHCPC improvements (from Darcy Gong). * apps/examples: - ostest: Replace large tables with algorithmic prime number generation. This allows the roundrobin test to run on platforms with minimal SRAM (Freddie Chopin). - keypadtest: A new keypad test example contributed by Denis Carikli. - elf and nxflat: If CONFIG_BINFMT_EXEPATH is defined, these examples will now use a relative path to the program and expect the binfmt/ logic to find the absolute path to the program using the PATH variable. * Build system: - New top-level Makefiles: Makefile.unix and Makefile.win (along with numerous changes to other make-related files). This adds basic support for building NuttX natively under Windows from a CMD.exe window (rather than in a POSIX-like environment). This build: (1) Uses all Windows style paths, (2) Uses primarily Windows batch commands from cmd.exe, with (3) a few extensions from GNUWin32. This capability should still be considered a work in progress because: (1) it has not been verfied on all targets and tools, and (2) still lacks some of the creature-comforts of the more mature environments (like a function configure.sh script and 'make menuconfig' support). - Example Windows native builds for STM32F4Discovery, eZ80, z16f, z8, Z80, and Z180. - Several configurations have been converted to work the kconfig- frontends mconf configuration tool: stm32f4discovery/nxlines, and all eZ80, z16f, z8, Z80, and Z180 configurations. - Architectures now include a common Toolchain.defs file that can be used to manage toolchains in a more configurable way (most of this contributed by Mike Smith). * Build tools: - Renamed tools/winlink.sh to tools/copydir.sh. - Several new tools/scripts to support the Windows native build: tools/mkdeps.bat, tools/mkdeps.c, tools/link.bat, unlink.bat, and copydir.bat. - tools/incdir.sh and incdir.bat now support an -s option to generate system header file paths. - tools/b16.c: Fixed precision math conversion utility. Bugfixes (see the change log for details). Some of these are very important (marked *critical*): * RTOS: Fix some backward conditional compilation in the work queue logic (Freddie Chopin). * File System: Uninitialized variable caused assertions (from Lorenz Meier). * Drivers: Partial fix for STM32 OTGFS device drivers and fix for short, unaligned writes in the flash translation layer (drivers/mtd/ftl.c), both from Petteri Aimonen. * STM32 Drivers: - Qencoder driver and TIM3 driver fixes from Ryan Sundberg. - Fix timeout delay calculation in the STM32 OTG FS host driver. * LPC17xx Drivers: Resources not being properly released when I2C driver is un-initialized. * Graphics: - Fix logic when the mouse drags outside of the window; fix another "blocked message" handling case (both from Petteri Aimonen). - nxtk_filltrapwindow(): Correct an offset problem (also from Peterri Aimonen). - nxglib_splitline(): Correct the "fat flat line" bug. * C Library: - nrand() changes to prevent coefficients from becoming zero which would "lock up" the random number generate. - Add rounding functions to the math library (contributed by Petteri Aimonen). * Build system: Changes to MIN definitions in all limit.h header files to avoid integer overflows. For example from (-128) to (-127 - 1) (from Petteri Aimonen). * Applications: Modbus fixes from Freddie Chopin. As well as other, less critical bugs (see the ChangeLog for details) NuttX-6.25 ---------- The 92nd release of NuttX, Version 6.25, was made on February 1, 2013, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.25.tar.gz and apps-6.25.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5595 Note that all SVN information has been stripped from the tarballs. If you need the SVN configuration information, you should check out directly from SVN. Revision r5595 should equivalent to release 6.25 of NuttX: svn checkout -r5595 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Or (HTTP): svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Additional new features and extended functionality: * OS Initialization - Removed support for CONFIG_BUILTIN_APP_START. This is not really a useful feature and creates a violation of the OS layered architecture. * Task Creation: - Implement a simple vfork(). In NuttX-6.25, this interface is available only for ARM7/9, ARMv7-M (Cortext-M3/4), and MIPS32 (PIC32MX) platforms. - exec() now sets the priority of the new task to the same priority as the parent task (instead of the arbirtrary value of 50). - New, partially complient implementations of execv() and execl(). These are only partially compliant because they do not overlay any existing "process space" but rather create the new task and exit(). - Add a complete implementation of posix_spawn(). This standard interface is a better match for an MMU-less architecture than are vfork() plus execv() or execl(). - Add a task start hook that will be called before the task main is started. This can be used, for example, to schedule C++ static constructors to run automatically in the context of the new task. * Task Parentage - Repartitioned tasking data structures. All shared resources are now collected together in a "task group". A task group includes the original task plus all of the pthreads created by the task. - Added support for remember the parent "task group" when a new task is started. - Added optional support to record the membership of each thread in the "task group". - Implement support for retaining child task status in the "task group" after the child task exists. This is behavior required by POSIX. But in NuttX is only enabled with CONFIG_SCHED_HAVE_PARENT and CONFIG_SCHED_CHILD_STATUS - Add internal logic to "reparent" a task. This is useful, for example, where the child task is created through a trampoline task that redirects I/O. Reparenting allows the caller of posix_spawn() to be reparented for the eventual child thread. - Added support for SIGCHLD. Sent to all members of the parent task group when the file member of the child task group exits. - If SIGCHLD and retention of child task exist status are enabled, then a more spec-compliant version of waitpid() is enabled. - New interfaces waitid() and wait() are also enabled when SIGCHLD is enabled. * File System - dup() and dup2() can new be used with opened files in a mounted file system. This supports re-direction of output in NSH to files. - The binfs file system was moved from apps/builtin to fs/binfs. The binfs file system was extended to support execution of "builtin applications" using exec(), execv(), execl(), or posix_spawn(). - Added logic based on SIGCHLD to automatically unload and clean-up after running a task that was loaded into memory. * Binary Formats - Much of the logic for "builtin applications" was moved from apps/builtin to nuttx/binfmt/libbuiltin. Includes some extensions contributed by Mike Smith. - A binary loader was added for builtin applications to support execution of "builtin applications" using exec(), execv(), execl(), or posix_spawn(). * Drivers: - Added logic to marshal and serialized "out-of-band" keyboard commands (such as cursor controls and key release events) intermixed with normal ASCII keypress data. The encoding is partially integrated in the HID keyboard driver and the decoding full integrated into the apps/examples hidkbd and keypadtest (the latter contributed by Denis Carlikli). - Driver for the UG-2864HSWEG01 OLED contributed by Darcy Gong. - Add support for removable serial devices (like USB serial). This support is enabled by CONFIG_SERIAL_REMOVABLE. * ARMv7-M: - Added an option to use the BASEPRI register to disable interrupts (instead of the PRIMASK). This eliminates some innocuous hardfaults that interfere with some debug tools. You need to switch to the BASEPRI method only if you have such tool interference. * STM32 Drivers - Bring STM32 F1 DMA capabilities up to par with the STM32 F2/F4 (contributed by Mike Smith). - Add support for USART single wire mode (Contributed by the PX4 team). - Updates to support for SPI DMA on the STM32 F1/F2/F4. From Petteri Aimonen. * STM32 Boards: - New configuration to support the UG-2864HSWEG01 OLED on the STM32F4Discovery board. - Added a posix_spawn() test configuration for the STM32F4Discovery. * LM3S/LM4F - Files and directories repartitioned to support both LM3S and LM4F using the STM32 organization as a model. - Partial definitions for the LM4F contributed by Jose Pablo Carballo (this is still a work in progress). * LM3S Boards - Added scripts and documentation to use OpenOCD with the LM3S (from Jose Pablo Carballo). * LPC176x/LPC178x - Files and directories repartitioned to support both LPC175x/LPC176x and the LPC177x/LPC178x families using the STM32 organization as a model. The LPC1788 port is a work in progress by Rommel Marcelo. * LPC176x/LPC178x Boards: - Added a configuration to support the Wave Share Open1788 board. This is still a work in progress by Rommel Marcelo. * LPC2148 Boards: - Add basic support for the The0.net ZP213x/4xPA board (with the LPC2148 and the UG_2864AMBAG01 OLED). - Add an nxlines configuration for the ZP213x/4xPA (with the LPC2148 and the UG_2864AMBAG01). * Simulator: - Add an nxlines configuration for the simulator. * Networking: - Add logic to work around delayed ACKs by splitting packets (contributed by Yan T.). - Split net_poll() to create the internal interface psock_poll(). * LCDs: - Added support for LCD1602 alphanumeric LCD (HD4468OU controller). * Graphics: - Added 5x8 monospace font. This tiny font is useful for graph labels and for small bitmapped display. Contributed by Petteri Aimonen. * Build System: - Add an options to better manage toolchain prefixes. - Redesigned how the context targer works in the apps/ directory. The old design caused lots of problems when changing configurations because there is no easy way to get the system to rebuild the context. This change should solve most the problems and eliminate questions like "Why don't I see my builtin application in NSH?" * Kconfig Files: - There are several new configurations that use the kconfig-frontends tools and several older configurations that have been converted to use these tools. There is still a long way to go before the conversion is complete: configs/sim/nxwm configs/sim/nsh configs/stm3220g-eval/nxwm configs/stm32f4discovery/posix_spawn configs/olimex-lpc1766stk/nsh configs/olimex-lpc1766stk/hidkbd configs/olimex-lpc1766stk/nettest configs/open1788/ostest configs/stm32f4discovery/nsh configs/stm32f4discovery/usbnsh configs/lm326965-ek (all configurations) configs/mcu123-214x/nsh configs/ubw32/ostest * Tools: - tools/kconfig.bat: Kludge to run kconfig-frontends from a DOS shell. - tools/configure.c: configure.c can be used to build a work-alike program as a replacement for configure.sh. This work-alike program would be used in environments that do not support Bash scripting (such as the Windows native environment). - tools/configure.bat: configure.bat is a small Windows batch file that can be used as a replacement for configure.sh in a Windows native environment. configure.bat is actually just a thin layer that executes configure.exe if it is available. If configure.exe is not available, then configure.bat will attempt to build it first. * Applications: - New and modified examples: apps/examples/wlan: Remove non-functional example. apps/examples/ostest: Added a test of vfork(). Extend signal handler test to catch death-of-child signals (SIGCHLD). Add a test for waitpid(), waitid(), and wait(). apps/exampes/posix_spawn: Added a test of posix_spawn(). - NSH: NSH now supports re-direction of I/O to files (but still not from). The block driver source argument to the mount command is now optional for file systems that do not require a block driver. NSH can now execute a program from a file system using posix_spawn(). Added support for a login script. The init.d/rcS script will be executed once when NSH starts; the .nshrc script will be executed for each session: Once for serial, once for each USB connection, once for each Telnet session. - Supports a new daemon that can be used to monitor USB trace outpout. - Removed non-functional wlan example. Bugfixes (see the ChangeLog for details). Some of these are very important: * Tasking: - Fixed a *critical* task exit bug. Here is the failure scenario: (1) sched_lock() is called increments the lockcount on the current TCB (i.e., the one at the head of the ready to run list), (2) sched_mergepending is called which may change the task at the head of the ready-to-run list, then (3) sched_unlock() is called which decrements the lockcount on the wrong TCB. The failure case that I saw was that pre-emption got disabled in the IDLE thread, locking up the whole system. * Signals: - sigtimedwait() would return a bad signal number if the signal was already pending when the function was called. * Drivers: - Some SD cards will appear busy until switched to SPI mode for first time. Having a pull-up resistor on MISO may avoid this problem, but this fix from Petteri Aimonen makes it work also without pull-up. * STM32 Drivers: - STM32 FLASH driver counting error (from Freddie Chopin). - STM32 F4 maximum SPI frequency was wrong (corrected by Petteri Aimonen). * STM32 Boards - Due to cloning of untested code, the logic to control on-board LEDs did not work on any STM32 boards. - Serial devices number /dev/ttyS0-5 is there is a serial console, but /dev/ttyS1-6 if there is no serial console. * Binary Formats - C++ static constructors execute now using a start taskhook so that they execute in the context of the child task (instead of in the context of the parent task). * File Systems: - Several FAT-related bugs fixed by Petteri Aimonen. * Networking: - Fix poll/select issure reported by Qiang: poll_interrupt() must call net_lostconnection() when a loss of connection is reported. Otherwise, the system will not remember that the connection has been lost and will hang waiting on a unconnected socket later. - Similar issues corrected for recvfrom() and send(). - Telnetd would hang in a loop if recv() ever returned a value <= 0. * Libraries: - fread() could hang on certain error conditions. - Can't handle SYSLOG output to a character device from the IDLE task (because the IDLE task can't block). * Build System: - Serial was driver was not being built if there is no console device. Obviously, the serial driver may be needed even in this case. * Additional Bugfixes: - sig_timedwait() and clock_time2ticks.c: Timing "rounding" logic - ARM9 Compilation issue with low vectors. - readline() return value - Others as detailed in the ChangeLog: HID keyboard, LPC17xx bit definitions, strndup(), PL2303, SYSLOG error handling, AT25, apps/examples. NuttX-6.26 ---------- The 93rd release of NuttX, Version 6.26, was made on March 15, 2013, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.26.tar.gz and apps-6.26.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). This release corresponds with SVN release number: r5745 Note that all SVN information has been stripped from the tarballs. If you need the SVN configuration information, you should check out directly from SVN. Revision r5745 should equivalent to release 6.26 of NuttX: svn checkout -r5745 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Or (HTTP): svn checkout -r5745 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code Additional new features and extended functionality: * OS Initialization: - Add an additional call-out to support board-specific driver initialization during the boot-up phase (available with CONFIG_BOARD_INITIALIZE=y). * Tasking: - New interface task_spawn() that is like posix_spawn(), but uses entry point addresses like task_create(). - Additional data restructuring as a continuation of the task group changes of NuttX 6.25. These data structures were moved from the TCB structure into the task group: pthread join data, atexit/on_exit callbacks, waitpid data structures, and message queues. - TCBs for tasks and pthreads are now separate structures. This saves a little memory since tasks do not have to carry the overhead for threads and vice versa. * Kernel Build: - Extensive changes were made to support the kernel build mode. In this mode, NuttX is built as a monolithic kernel. NuttX is built as a separate kernel mode "blob" and the applications are built as a separate user mode "blob". The kernel runs in kernel mode and the applications run in user mode (with the MPU restricting user mode accesses). Access to the kernel from the user blob is only via system calls (SVCalls). - Extensive changes were made to the syscall, SVCall, and trapping logic. Many internal interfaces were renamed. - The memory manager was extended to support both kernel- and user- mode allocations. Logic within the kernel needs to use the correct kernel- or user-space allocator, depending upon the user of the allocated memory. - The user-space blob now contains a header built in at the beginning of the block that provides the same information that was previously provided by a kludgy, auto-generated header file (user_map.h). - Basic support implemented for the ARMv7-M family with fragments also implemetned for the ARMv6-M and MIPS32 families. - Kernel build supported added for the LPC17xx Open1788 and for the Atmel SAM3U-EK board. All testing is being performed on the Open1788 board. * Signals: - Delivery of signals to threads within a task group is now compatible with the way that signals are delivered to threads within a process. * Drivers: - Add a driver for the SST29VF NOR FLASH parts. - USB device trace/debug feature extended to decode device-specific trace events to make the trace output more readable (from Petteri Aimonen). - USB MSC device driver can not support names of differing sizes in the USB descriptor and the SCSI fields (from Petteri Aimonen). - Locking added to MMC/SD SPI drivers so that MMC/SD can co-exist on the same bus as other SPI devices. Frequency is reset each time that the MMC/SD SPI has the bus locked. (from Petteri Aimonen). * ARMv6-M (Cortex-M0): - Added support for the ARM Cortex-M0 family. * nuvoTon NUC120: - Added support for the nuvoTon NUC120 MCU (Cortex-M0). * nuvoTon NUC120 Boards: - Added basic support for the nuvoTon NuTiny-SDK-NUC120 board (Cortex-M0). * LPC17xx: - Added support for the LPC177x and LPC178x families. Most of this is the work of Rommel Marcelo. * LPC17xx Boards: - Added support for Zilogic System's ARM development Kit, ZKIT-ARM-1769. From Rashid. - The port for the WaveShare Open1788 board is now functional. Basic OS test and NuttShell (NSH) configurations are functional. More driver development and testing is needed (from Rommel Marcelo). * LPC17xx Drivers: - Added an SD card MSI driver for the LPC178x. The driver is marginally functional but requires DMA capability to be reliable. * STM32 - Support extended to handle the STM32 F3 family (Cortex-M4 with F1-like peripherals). * STM32 Boards - Added support the STMicro STM32F3Discovery board (STM32 F3). * Stellaris LM3S/LM4F - Basic support for the LM4F120 family is in place, but untested (mostly from Jose Pablo Carballo). * Stellaris LM4F Boards - Add support for the LM4F120 LaunchPad (untested). * Networking: - select() should now allocate a little less memory. * Memory Management: - Extended to support multiple heaps. This is used as part of the kernel build in order to support separater user- and kernel-mode heaps. - The stand-alone memory manger test had to be removed. It was too entangled and made extension of the memory manager nearly impossible. This is a loss. * Build System: - Several configurations converted to use the kconfig-frontends configuration tool. There are still many more that need to be converted. * C Library: - Move the workqueue logic into the C library. There is now a special user-space version of the work queue (which will only be used with a NuttX kernel build). - Implementation of itoa() contributed by Ryan Sundberg. * Applications: - The NSH builtin task logic now uses task_spawn() to start builtin applications. - The OS test now includes a test cased to verify task_restart(). Efforts In Progress. The following are features that are partially implemented but present in this release. Most are expected to be fully available in NuttX 6.27. * LM4F120 LaunchPad port. Code is in place, but nothing has been tested. * WaveShare Open1788 port. This port as actually complete and functional. However, there is still ongoing development and testing of drivers. * Kernel Build. Much progress has been made, but there kernel build is not yet fully functional due to several user resources that are not yet properly disentangled from the kernel blob. * Conversion of old configurations to use the kconfig-frontends tool is an ongoing effort that will continue for some time. Bugfixes (see the ChangeLog for details). Some of these are very important: * Tasking: - The wrong PID was being signalled with SIGCHILD. It should be the PID of the task that create the task group, not the ID of the last thread to leave the task group. - Added logic so that some internal resources and states are recovered when tasks are deleted or restarted. Handle cases where there are outstanding timed events pending when tasks are deleted or restarted. * ARMv7-M: - Several fixes to the MPU control logic. * Drivers: - Removable serial drivers race conditions fixed. - MAX11802 timing bug (from Petteri Aimonen). * STM32 Drivers: - Handle cases were SPI DMA logic fails if sem_wait is awakened by a signal. Need to clear error flags to prevent corruption of subsequent transfers. Also, bit count should not be changed while the SPI peripheral is enabled (from Petteri Aimonen). - Fixes to the OTG FS device driver from Petteri Aimonen. - Fix typos in DMA register header file (from Yan T.) * Graphics: - Correction to the hyphen in the SANS 17x22 font (from Petteri Aimonen). * Networking: - Corrected errors in the socket poll/select logic. Additional state logic was needed to detect if the socket is still connected before starting the poll wait. (bug reported by Qiang Yu). * Memory Management: - mallinfo() should hold the memory manager semaphore (from Petteri Aimonen. * Build System: - Resolved several build errors reported by Mike Smith. * Applications: - Fixed an NSH memory leak: Needed to detach after creating each pthread. - readline() now returns EOF on any failure (instead of a negated errno value). This is because the underlying read is based on logic similar to getc. The value zero (meaning end-of-file) was being confused with a NUL. So if a NUL was received, the NSH session would terminate because it thought it was the end of file. NuttX-6.27 ---------- The 94th release of NuttX, Version 6.27, was made on April 28, 2013, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.27.tar.gz and apps-6.27.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). Additional new features and extended functionality: * OS Initialization: - Add missing registration of /dev/zero. Registration of /dev/null should depend upon conditional compilation. From Ken Pettit. * Tasking: - Added a new interface to set aside memory on the task's stack. This is used (at least in the kernel build) to hold task arguments. - Remove up_assert_code(). One assertion routine is enough. * Kernel Build: - Extensive changes were made to support the kernel build mode. In this mode, NuttX is built as a monolithic kernel. NuttX is built as a separate kernel mode "blob" and the applications are built as a separate user mode "blob". The kernel runs in kernel mode and the applications run in user mode (with the MPU restricting user mode accesses). Access to the kernel from the user blob is only via system calls (SVCalls). - Kernel build configurations for the Open1788 board and for the STM32F4Discovery now execute correctly. - Changes were made to task and thread start-up routines, signal handling, data structures, ARMv7-M SVCalls, stack management interfaces, * Drivers: - Driver for the ST7567 LCD Display Module from Univision Technology Inc. Contributed by Manikandan.S - SPI initialize functions renamed so that multiple SPI blocks can be initialized. - Extended to support the RAMTRON FM25V01 device. Contributed by Lorenz Meier - Serial drivers: TIOCSERGSTRUCT ioctls now conditioned on CONFIG_SERIAL_TIOCSERGSTRUCT * ARMv7-M (Cortex-M3/4): - Added support for modifiable interrupt vectors in RAM * nuvoTon NUC1xx: - Added kernel build support * Freescale Kinetis: - Add kernel build support - Add support for the Kinetis L family of Cortex-M0+ MCUs. Contributed by Alan Carvalho de Assis. * LPC17xx: - Now holds off sleep mode in the IDLE loop is DMA is in progress (because sleep mode will disable CPU SRAM). * LPC17xx Boards: - ZKIT-ARM-1769: Now supports the ST7567 LCD display module. Added an nxhello configuration for testing (Manikandan.S). - ZKIT-ARM-1769: Add support for both CAN1 and CAN2. Contributed by M.Kannan - Open1788: Basic support for the WaveShare Open1788 board is complete with working OS test, NSH, and graphics configurations. - Open1788: Integrated the LPC178x LCD driver with the WaveShare display. Touchscreen support is included, howerver, there appears to be an issue with the Open1788 touchscreen interrupt signal. - Open1788: Now supports SDRAM (used to provide the LCD framebuffer). - Open 1788: Reversed sense of the IDLE LCD. It is now off when the LPC17 is sleeping and on when awake. That is much a better visual indication of the dynamic CPU load * LPC17xx Drivers: - Added an LCD framebuffer driver for the LPC177x/8x family. - Implemented LPC17xx GPDMA support. - Integrated the LPC17xx GPDMA support into the SD card driver. - SSP driver adapted to work with the LPC178x family. - Separate LPC176x and LPC178x GPIO logic; this logic is too different to maintain in one file with conditional compilation. - Re-design of the GPIO logic for the LPC178x family by Rommel Marcelo. * LPC43xx: - Added kernel build support * STM32: - Added support for kernel mode build. - Added architecure support for the STM32 F427/F437 chips. Contributed by Mike Smith * STM32 Boards: - Added a configuration to support a kernel mode build of the OS test on the STM32F4Discovery * Stellaris LM3S/LM4F: - Added kernel build support - Added support for the 7 UARTs on the LM4F120 * Stellaris LM4F Boards: - Added scripts and instructions to simplify use of OpenOCD with ICDI (JP Carballo) - The basic for the Stellaris LM4F120 Launchpad is complete. This includes support for OS test and NSH configurations. Additional driver development is needed. * Build System: - Directories where the same sources files are used to build different objects in the first and second pass kernel builds need to keep those objects in separate directories so that they are not constantly rebuilt. * Applications: - apps/system/ramtest: Add a simple memory test that can be built as an NSH command. * Tools: - kconfig2html is a new tool which will replace the hand-generated documentation of the NuttX configruation variables with auto- generated documentation. Efforts In Progress. The following are features that are partially implemented but present in this release. Most are expected to be fully available in NuttX 6.28. * A port to the Freescale Freedom KL25Z is complete but not yet stable enough. The KL25Z is a low-cost Cortex-M0+ part with 128KB of FLASH and 16KB of SRAM. This is is the effort of Alan Carvalho de Assis. * Conversion of old configurations to use the kconfig-frontends tool is an ongoing effort that will continue for some time. At this time, only 32% of the configurations have been converted to use the kconfig-frontends tools. Bugfixes (see the ChangeLog for details). Some of these are very important: * Tasking: - Fixed a critical bug: When there is pending C buffered output and the system is very busy, the a pthread may be blocked at a critical point when trying to exit. Blocking at this critical point would cause crashes. All entire task/thread exit logic paths were reviewed and failsafe mechanisms were put in place to assure that exitting tasks never block after task teardown has been started. * ARMv6-M: - Fixed parameter passing for all system call inline functions with > 3 parameters - Fixed a major problem: The Cortex-M0 has no BASEPRI register but the logic of NuttX-6.26 was using it to manage interrupts. Switch to using the PRIMASK instead. This means that hardfaults will (again) occur when SVC instructions are executed * ARMv7-M: - Corrected Correct MPU sub-region settings for unaligned regions. - In exception handling with CONFIG_NUTTX_KERNEL, need to explicitly set and clear the privilege bit in the CONTROL - Fixed parameter passing for all system call inline functions with > 3 parameters * Drivers: - Support for O_NONBLOCK was not supported in the "upper half" serial driver. - PL2303 compilation errors * Stellaris LM3S/4F: - Corrected typos in alternate function definitions. * LPC17xx Drivers: - Added a work-around for an ADC errata. From Chris Taglia - Only one ADC pin was configured. Need to configure all that are in the ADC0 set. From MKannan * File Systems: - The FAT logic was not making a distinction between directory non-existence and file non-existence so when it you try to create a file in a non-existent directory, it would create a file with the name of the missing directory. Reported by Andrew Tridgell - Several fixes to the FAT file system from Ronen Vainish. These fixes mostly involve the logic to extend directory clusters for the case of long file names but also include a few important general fixes (such as for storing 32 bit FAT values) - mkfatfs was writing the boot code to the wrong location. From Petteri Aimonen * Networking: - Fixed a compilation error when socket options are are disabled. Reported by Daniel O'Connor * C Library: - Corrected an error in sscanf. If %n occurs in the format statement after the input data stream has been fully parsed, the %n format specifier will not be handled. Reported by Lorenz Meier - strchr(str, '\0') should return a pointer to the end of the string, not NULL. From Petteri Aimonen * Build System: - Fix naming of NuttX target if EXEEXT is defined. * Applications: - OS test: Fix timing error in non-cancelable thread test. - NSH: Correct the test of the skip input parameter. Was limiting the range to <= count. From Ken Petit. NuttX-6.28 ---------- The 95th release of NuttX, Version 6.28, was made on June 14, 2013, and is available for download from the SourceForge website. Note that release consists of two tarballs: nuttx-6.28.tar.gz and apps-6.28.tar.gz. Both may be needed (see the top-level nuttx/README.txt file for build information). Additional new features and extended functionality: * File Systems: - SMART FLASH file system (contributed by Add Ken Pettit). * MTD (FLASH) Drivers: - Add support of MTD partitions via a new MTD driver that manages a set of MTD devices, each managing a subset of the FLASH region managed by the parent MTD driver. - Extended the MTD interface to provide an (optional) method to perform byte oriented writes if supported by the FLASH part. - M25Px driver re-architected to use the byte write capability (when possible) and to use 4KB sectors for the erase block size when the part supports it (from Ken Pettit). * LCD Drivers: - New interface definitions to support audio devices (from Ken Pettit) and alphanumeric, segment LCDs. * Wireless Drivers: - Added new driver for the wireless nRF24L01+ transceiver (from Laurent Latil). * Calypso: - Added support for the Pirelli DP-L10 phone (from Craig Comstock via Alan Alan Carvalho de Assis) * STM32: - Added an option to conditionally disable the "wfi" sleep mode. This is needed with certain JTAG debuggers to to prevent the debug session from begin disconnected (from Ken Pettit). - Added support for the STM32L (STM32L15X/STM32L16x) family. - Added STM32F103C4 and F103C8 chip support (from Laurent Latil). - Added a new interface function, stm32_dmacapable() that can be used to determine if DMA is possible from the specified memory address (from Petteri Aimonen) * STM32 Drivers: - If CONFIG_STM32_DMACAPABLE is defined, the STM32 SPI driver now uses stm32_dmacapable() to determine if it is possible to perform DMA from the specified address. This change is important for the STM32 F4 which may have SPI data buffers allocated on the stack in CCM memory which cannot support the DMA (from Petteri Aimonen). * STM32 Boards: - Support added for the MikroElektronika Mikromedia for STM32F4 development board (from Ken Pettit) with the MIO283QT2 LCD and touchscreen. Several graphics configurations are included. - The HY-mini STM32v board now uses the common SSD1289 driver and supported the card detect interrupt. Several new configurations also added and some removed (from Laurent Latil). - Support added for the R65105-based LCD that comes with some HY-Mini STM32v boards (from Christian Faure). - Added basic support for the STM32L-Discovery board. Drivers for the on-board segment LCD are included. - Added support for the STM32 Tiny development board based on the STM32 F103C8T6 MCU. This includes support for the nRF24L01+ wireless on the board (from Laurent Latil). * Stellaris LM3S/LM4F: - Support added for a TI/Stellaris internal FLASH MTD driver (from Max Holtzberg). * Stellaris LM4F Boards: - The LM3S6965-EK now has configurations for the UDP discovery tool and for the TCP echo server (both from Max Holtzberg) * Atmel ATSAM3/4: - Reorganized, renamed, and updated directory structure to better support additional members of the SAM3/4 family. - Added support for both the ATSAM4S and ATSAM4L families. The ATSAM4S is similar to the ATSAM3U, but the ATSAM4L is quite a different beast, really much more akin to the AVR32s SoCs but with a Cortex-M4. * Atmel ATSAM3/4 Boards: - Added support for the Atmel SAM4L Xplained Pro development board. This board features the ATSAM4LC4C MCU (Cortex-M4 with 256KB FLASH + 32KB SRAM). - Added support for the Atmel SAM4S Xplained developement board. This board features the ATSAM4S16C MCU (Cortex-M4 with 1MB FLASH + 128KB SRAM). * PIC32MX Boards: - Added support for the 1602 segment LCD on-board the Sure PIC32MX board. This board will now also support a USB NuttX console and the USB monitor test program. * Build System: - Clean-up of almost all .gitignore files: Made scope of ignore to be only the current directory; Ignore .dSYM files in directories where .exe's may be built. Also, in Makefiles, clean .dSYM files in directories where an .exe may be built. - Standardize and consolidated all build-as-an-NSH-application configuration settings. Now only CONFIG_NSH_BUILTIN_APPS is sufficient to build an application, test, or or example as an NSH builtin application. - Added support for a generic ARM, ARMv6-M and ARMv7-M Windows EABI toolchains. * Libraries: - Added encoder/decoder logic to marshal and serialize special segment LCD (SLCD) commands intermixed with normal ASCII data. This is the similar to the encoding/decoding logic that is used to marshal special commands from a keyboard. - Add dprintf() and vdprintf() (the latter from Andrew Tridgell). - Add an application that may be built as an NSH builtin command that will erase FLASH using a flash_eraseall NSH command (from Ken Pettit). * Applications: - Added an MTD partition test/examples. Currently used with (1) the a simulation configuration to test MTD partitions on a RAM emulation of FLASH and (2) with the Mikroe STM32F4 configuration. - Added a test/example to verify alphanumeric, segment LCDs. - Added a simple single threaded, poll based TCP echo server based on W. Richard Stevens UNIX Network Programming Book (from Max Holtzberg). - Added several tests of the SMART block driver and file system (from Ken Pettit). - Added a runtime configuration for the UDP discover utility (from Max Holtzberg). - Added an example application to demo the nRF24L01 driver (from Laurent Latil). - New and modified NSH commands: Added a -h option to the df command to show the volume information in human readable form (from Ken Petit). Add a new mksmartfs command (from Ken Petit). Efforts In Progress. The following are features that are partially implemented but present in this release. Most are expected to be fully available in NuttX 6.28. * Audio System: - A complete audio subsystem include CODECs, higher level management, interface definitions, and audio drivers was contributed by Ken Pettit. This work has not been completely verified as of this release and so is categorized as a work-in-progress. At present, progress is blocked due to issues interfacing with the VS1053 audio DAC on the Mikroe STM32F4 board. * kconfig-fronted Configuration: - Conversion of old configurations to use the kconfig-frontends tool is an ongoing effort that will continue for some time. At this time, only 43% of the configurations have been converted to use the kconfig-frontends tools. Bugfixes (see the ChangeLog for details). Some of these are very important: * Tasking: - Modify assertion in the priority inheritance logic that is reported to cause false alarm assertions. * Kernel Build: - Typo in syscall proxying logic corrected by Ken Pettit. * Networking: - Poll setup/teardown logic should ignore invalid (i.e., negative) file descriptors (from Max Holtzberg). - When readahead data is available, the network poll() logic should set POLLIN (or POLLRDNORM), not POLLOUT (from Max Holtzberg). * LCD Drivers: - Correct power controls in the MIO283QT2 LCD driver. * USB Device Controller Drivers: - Change the default IN request buffer size from 64 to 96. This will avoid requests of exactly MAXPACKET size and, hence, avoid so many NULL packets. Also, fix the OUT request buffers size to exactly the max packet size. It really cannot be any other size. * STM32 Drivers: - Correct some bad STM32 F1 DMA definitions that crept into the system a few months ago a broke STM32 F1 DMA (from Laurent Latil) - Fixed an error in NULL packet handling in the STM32 F1 USB device controller driver: If the NULL-packet needed flag ever got set, then it was not being cleared and infinite NULL packets resulted. This only affects the CDC/ACM class and was the cause of the failures using the USB CDC/ACM device as a NuttX console. With this change the USB works well as an alternative NuttX console device for the STM32 F1 family. - Correct some bad condition compilation in the RCC logic (CONFIG_ missing from setting names). This affects some STM32 FLASH pre- fetch settings (from Lorenz Meier). - Change for hardware flow control support for STM32. The change also fixes incorrect operation of USART2 and UART5 in current master (from Lorenz Meier and Mike Smith). - Fixed a backward conditional in USB OTG FS host controller driver that prevented detection of disconnection events (from Scott). * LPC17xx Drivers: - I2C interrupt control. Also correction for a single byte read timeout error (from M. Kannan). * Freescale Kinetis: - Freedom KL25Z pin multiplexing and LED control corrections (from Alan Carvalho de Assis) * PIC32MX: - Fix NULL packet handling in the PIC32 USB device driver. Without this fix the CDC/ACM driver cannot be used reliably with the PIC32 USB. With this change the USB works well as an alternative NuttX console device. * Graphics: - Default priorities for NxWidget and NxWM threads should be 100, not 50, to be consistent with other default priorities. * Applications: - Remove the CONFIG_EXAMPLES_NXTEXT_NOGETRUN option from the NXTEXT example. The test logic was bad for the case where this options is not selected. Also, completed the empty Kconfig file. - C++ name mangling was occurring when this example is built as an NSH built-in application causing the entry to be undefined when called from C code. - Add some missing NSH library configuration values (from Lorenz Meier).