 |
| ||||
NuttX is an open source and real-time embedded operating system (RTOS).
NuttX has a small footprint that is usable in micro-controller environments. It is fully scalable from tiny (8-bit) to moderate embedded (32-bit) systems.
It also aims to be fully compliant to standards, to be fully real time, and to be totally open.
Product's homepage
Here are some key features of "NuttX":
· Small Footprint
· Rich Feature OS Set
· Highly Scalable
· Standards Compliance
· Real-Time
· Totally Open
· Non-restrictive BSD license
What's New in This Release: [ read full changelog ]
· drivers/serial/serial.c: Correct some race conditions when checking for disconnection of a removable serial device.
· *sched/task_posixspawn.c, task_spawn.c, task_spawnparms.c and spawn_internal.h\: Create new interfacetask_spawn()that is likeposix_spawn(), but uses entry point addresses liketask_create()`.
· Corrected all argv[] arguments: Should be char * const *, not const char **.
· sched/pthread* and include/nuttx/sched: Move pthread join data and pthread key calculation data into the "task group" structure.
· *sched/atexit.c, on_exit.c, task_exithook.c and include/nuttx/sched.h\: Moveatexitandon_exit` data structures to task group. These callbacks are only issued now when the final member of the task group exits.
· *sched/waitpid.c, task_exithook.c and include/nuttx/sched.h\: Movewaitpiddata data structures to task group. Callers ofwaitpid()` are now only awakened when the final thread of the task group exits.
· sched/mq_descreate.c, mq_open.c, mq_remove.c, group_leave.c, and include/nuttx/sched.h: Move list of opened message queues to the task group structures. Now all message queues opened by members of the group are closed when the last member of the group exits.
· *includes/nuttx/sched.h and Lots of files*\: Change name of_TCBtostruct tcb_s` so that (1) it is consitent with other NuttX naming and so that (2) the naming can handle some upcoming changes.
· includes/nuttx/sched.h and sched/: There are three TCB structures: struct tcb_s is a generic common version, struct task_tcb_s is a version for tasks and kernel threads and pthread_tcb_s is a version for pthreads. By dividing the TCB structure into these variants, pthreads do not have to be burdened by task-specific data structures (and vice versa).
· sched/task_exithook.c and group_create.c: Fix an error, the task within the task group may exit early leaving a pthread to exit the task group last. In this case, we need to remember the the PID of the main task in the task group and use that PID for signalling SIGCHILD to the parent task group.
· included/nuttx/sched.h and sched/sig*.c: Numerous changes to the signal deliver logic so that the delivery of signals to threads within a task group will be compliant with delivery of signals to threads within a POSIX process.
· sched/mq_recover.c and task_exithook.c: Add logic to handle the case where a task is deleted (or pthread canceled) while it is waiting on a message queue. task_delete() and pthread_cancel() are dangerous interfaces. This is only one feeble recovery measure of many that would be needed to do this safely.
· *sched/group_killchildren.c, task_recover.c, group_foreachchild.c,sched/restart.c,sched/task_delete.c, and others*\: Beef up logic to better support task deletion and pthread cancellation. Needed to pass need OS test case fortask_restart()`.
· sched/include/sched.h and all timed functions in sched/: Move timer from local variables to TCB. This is needed so that if a task is canceled or restarted while it is waiting for a timed event, we can gracefully recover. We can't let the timer expire after the task has been deleted.
· arch/arm/include/stm32 and arch/arm/src/stm32: Add support for the STM32 F3 family (still missing some things).
· configs/stm32f3discovery: This will (eventually) be support for the STM32F3Discovery board.
· *STM32 F3 and STM32F3Discovery port is complete a ready for test.
· arch/arm/src/lpc17xx: Add support for the Cortex-M4 FPU and Mikes "common vector" logic. The LPC1788 is going to need these things.
· arch/arm/src/stm32/stm32_spi.c: Fix SPI DMA logic that does not work if sem_wait() is interrupt by a signal. From Petteri Aimonen.
· drivers/input/max11802.c: MAX11802: Fix a timing bug that corrupted coordinates. From Petteri Aimonen.
· drivers/mmcsd/mmcsd_spi.c: Use SPI locking so that MMC/SD can exist on the same bus as other SPI devices. From Petteri Aimonen.
· graphics/nxfonts/nxfonts_sans17x22.h: Small mod to hyphen in sans17x22 font. The hyphen did not have any space on its sides. This caused it to run together with other characters so that for example "+-" would look weird. From Petteri Aimonen.
· mm/mm_mallinfo.c: Take MM semaphore in mm_mallinfo. From Petteri Aimonen.
· configs/stm32f3discovery/nsh/defconfig: Disable SPI. It is not used.
· drivers/mtd/sst39vf: Add a driver for the SST29VF NOR FLASH parts.
· sched/os_start.c: Add an additional call-out to support board-specific driver initialization during the start phase*\: IfCONFIG_BOARD_INITIALIZEis defined, then an additional initialization function calledboard_initialize()will be called just afterup_initialize()` is called and just before the initial application is started.
· arch/arm/src/stm32/stm32_otgfsdev.c, drivers/usbdev/usbdev_trprintf.c, and include/nuttx/usb/usbdev_trace.h: Add logic to support decoding of device-specific trace events to make the trace ouput more readable. From Petteri Aimonen.
· arch/arm/src/stm32/stm32_otgfsdev.c: Need to manually set CNAK in the case where we are waiting for a SETUP command with DATA. Otherwise, the core may NAK further transactions. From Petteri Aimonen.
· arch/arm/src/stm32/stm32_otgfsdev.c: Add logic to prevent premature to IDLE state. This change (plus the previous) was necessary to get the CDC/ACM driver working the certain STM32 F4 hardware (but not others). These changes appear to prevent certain race conditions that may or may not cause USB problems. From Petteri Aimonen.
· arch/arm/include/armv6-m and arch/arm/src/armv6-m: First cut at support for the Cortex-M0
· *configs/nutiny-nuc120, arch/arm/include/nu1xx, and `arch/arm/src/nuc1xx: Support for Nuvoton NuTiny NUC120.
· 2013-02-22: the Cortex-M0, NuvoTron NUC1xx, and NuTiny-SDK-NUC120 port is code complete and ready for testing.
· configs/ekk-lm3s9b96/ostest and nsh: All EKK-LM3S9B96 configurations converted to use the mconf configuration tool.
· configs/zkit-arm-1769: Add support for Zilogic System's ARM development Kit, ZKIT-ARM-1769. From Rashid.
· configs/zkit-arm-1769/hello: Add a "Hello, World!" configuration for the KBIT-ARM-1769 board. From Rashid.
· configs/zkit-arm-1769/thttpd: Add a THTTPD configuration for the KBIT-ARM-1769 board. From Rashid.
· 2013-02-27: All configurations for the Cortex-M0 NuTINY-SDK-NUC120 appear to be functional and stable.
· configs/zkit-arm-1769/nsh: Add an NSH configuration for the KBIT-ARM-1769 board. From Rashid.
· arch/arm/src/stm32/stm32_otgfsdev.c: Fixes from Petterri Aimonen related to corner cases that can cause infinite interrupts.
· drivers/usbdev/usbmsc_scsi.c: Change to allow the full name in the USB descriptor but a truncated, 8-byte name in the SCSI field. From Petteri Aimonen.
· arch/arm/src/stm32/stm32_spi.c: 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.
· drivers/mmcsd/mmcsd_spi.c: When bus is shared, the speed has to be set every time. Also SD cards require a few dummy clocks to react into CS release. From Petteri Aimonen.
· configs/lm4f120-launchpad: In initial configuration for testing the LM4F120 LaunchPad port. This is to support testing only and is not yet a functional board port (as of 2013-03-01).
· *arch/arm/include/lm/lm4f_irq.h and `arch/arm/src/lm/chip/lm4f_vector.h: Add interrupt vector/IRQ number definitions for the LM4F120.
· arch/arm/src/stm32f20xxx_dma.c and stm32f40xxx_dma.c: Fix a typo in assigned base register addresses for each DMA channel. From Yan T.
· Build Fixes: Several build fixes from Mike Smith were incorporated. These were mostly compilation errors introduced into the system because of the large number of recent changes with broad scope (2013-03-04).
· configs/zkit-arm-17969/src/up_can.c: Add CAN support to the Zilogics Technologies ZKIT-ARM-1769 board (From Rashid Fatah, (2013-03-04)).
· arch/arm/src/lpc17/lpc17*_clockconfig.c: The WaveShare Open1788 board now boots and passes the OS test. This is the work of Rommel Marcelo (2013-03-04).
· *arch/arm/src/lm/lm_gpio.c, lm_gpio.h, and `chip/lm4f_pinconfig.h Extend GPIO logic to handle LM4F. Add LM4F pin configuration header file (2013-03-04).
· configs/open1788: Enable LED support in all configurations. (2013-03-04)
· configs/open1788/nsh: NSH configuration verified function. By Rommel Marcelo (2013-03-05).
· configs/open1788/src/lpc17_nsh.c: Use the SD card interface, not SPI to interface with SD cards (2013-03-05.
· arch/arm/src/lpc17xx/lpc17_sdcard.c and header files: Clone the STM32 SD card interface to the LPC1788. It appears to be the same IP. (2013-03-05)
· libc/wqueue: Work queue logic moved from sched/ to libc/wqueue. It is not really core OS functionality and this move helps prepare for user-space work queues. (2013-03-05)
· libc/wqueue: Implemented user-space work queues. These will not get tested until the next time I attempt a NuttX kernel build. (2013-03-05).
· arch/arm: Correct some bad syscall dispatching logic. This change cannot be fully tested until there is a fielded NuttX kernel build. (2013-03-06).
· net/net_poll.c: Correct logic that checks if the socket is disconnected when the poll is setup. That is bad logic: Listen sockets, for example, are not connected. In that case, the purpose of the poll is to wait for connection events. As a result of this, poll/select would return immediately with POLLHUP with it was used to detect connection events. This fix for now was to check instead if the socket is closed (meaning that it was connected at one time but was closed by the remote peer). That excludes the listen socket which was never connected. This does introduce a new problem, however. If the socket was not closed, but lost the connection through an abnormal event, then poll/select will hang. That needs to be revisited. (2013-03-07)
· fs/fs_select.c: Was not checking if the timeout parameter was NULL but would, instead, setup a bogus timeout based on whatever it found at address zero. Also, improved some of the memory allocation logic so that it will not use so much memory. (2013-03-07)
· net/net_poll.c: Handle the missing case. Now tests for not connected AND not listening. I think that now covers all of the cases including the missing case noted above. (2013-03-07)
· mm/: Move all memory manager globals into a structure. A reference to this structure is now passed internally between mm APIs. This change will (eventually) support multiple heaps and heap allocators. (2013-03-08).
· mm/ and include/nuttx/mm.h: Implement support for multiple heaps. (2013-03-08).
· arch/*/src: xyz_addregion() needs to call kmm_addregion, not mm_addregion. (2013-03-08).
· sched/kmm*.c: Move this garbage kmm*.c file to mm/. until I decide what to do with them (which is probably to just delete them). (2013-03-08).
· mm/mm_test.c and Makefile.test: Deleted the memory test. This was a good test and helped me a lot when I wrote the memory manager, but now it is in the way and paralyzing other efforts. So the memory unit test was deleted. (2013-03-08)
· sched/sched_free.c: Rename sched_free() to sched_ufree(); Add sched_kfree() to handler deferred kernel heap allocations. (2013-03-10)
· arch/: User user-accessible heap to allocate all stacks. (2013-03-10)
· arch/arm/src/sam3u: The AT91SAM3U will now support a kernel heap if so configured. (2013-03-10)
· configs/sam3u-ek/knsh: This configuration was converted to use the kconfigs-frontends build tool. (2013-03-10)
· configs/*/include/user_map.h and include/nuttx/userspace.h: Remove the very kludgy user_map.h file and replace it with a header that is expected at the beginning of the user-space blob. (2013-03-10)
· configs/sam3u-ek/kernel/up_userspace.c: This is the header for the SAM3U-EK's user space. (2013-03-10)
· sched/os_bringup.c: In the kernel build, os_bringup() now uses the user-space header to automatically start the user-space work queue, if so configured. (2013-03-10)
· arch/arm/src/lpc17xx/lpc17_mpuinit.c and lpc17_userpace.c: Add support for the MPU and kernel build for the LPC17xx family. (2013-03-11)
· configs/open1788/kernel and knsh: Add kernel build support and a kernel NSH configuration for the WaveShare Open1788 board. (2013-03-11)
· configs/sam3u_ek/kernel, knsh, and scripts: Move some files around for better supportability. (2013-03-11)
· configs/open1788/kernel, knsh, and scripts: Add a kernel mode build configuration for the WaveShare Open1788 board. (2013-03-11)
· arch/arm/src/armv7-m/up_mpu.c: Several fixes to MPU logic. (2013-03-12).
· arch/arm, configs/sam3u-ek, configs/open1788: Fix memory map for kernel mode build; Some regions were overlapping. (2013-03-13).
· arch/: Rename g_heapbase to g_idle_topstack. This is the same value however: The top of the IDLE stack is the same as the base of the heap in the flat build. But not in the kernel build: The base of the heap is elsewhere so the naming was wrong. (2013-03-13).
· libc/stdlib/lib_itoa.c: Implementation of itoa() contributed by Ryan Sundberg. (2013-03-14).
Via: NuttX 6.26
No comments:
Post a Comment