269 lines
9.9 KiB
Plaintext
269 lines
9.9 KiB
Plaintext
NuttX-7.15
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----------
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The 115th release of NuttX, Version 7.15, was made on March 27, 2016,
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and is available for download from the Bitbucket.org website. Note
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that release consists of two tarballs: nuttx-7.15.tar.gz and
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apps-7.15.tar.gz. These are available from:
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https://bitbucket.org/patacongo/nuttx/downloads
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https://bitbucket.org/nuttx/apps/downloads
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Both may be needed (see the top-level nuttx/README.txt file for build
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information).
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Additional new features and extended functionality:
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* Core OS:
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- Add a state variable that provides the current level of OS
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initialization. This is needed by some logic that may attempt to
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run early in the start-up sequence but cannot run if a sufficient
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level of initialization has not yet occurred.
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- Spinlocks: Add interface definitions for to support spinlocks as
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needed for multi-CPU configurations.
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- SMP support. Support for Symmetric Multi-Processing (SMP) added.
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This affects many internal data structures, spinlock extensions
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and renaming of interrupt enable/disable interfaces, new platform
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interfaces to support CPU initialization and inter-actions, and
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new application interfaces to manage CPU affinity. The changes
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are too extensive to summarize here; see the SMP Wiki page at
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https://cwiki.apache.org/confluence/display/NUTTX/SMP. The
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new platform interfaces are also described in the NuttX porting
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guide: https://nuttx.apache.org/docs/latest/quickstart/organization.html.
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Only partially verified; awaiting hardware for the complete
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verification.
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- TLS: Basic definitions needed to support thread local storage
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(TLS). TLS is not used anywhere yet (and may not be used in the
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near future either).
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- Performance Monitoring: Add a configuration option to buffer
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RTOS instrumentation data in an in-memory buffer.
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- boardctl(): Add boardctl() support that will permit applications
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to control USB devices.
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* File Systems/Block Drivers:
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- procfs: Add /proc/kmm entry that shows that state of the kernel
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heap. Only useful in PROTECTED and KERNEL build modes where there
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is a kernel heap.
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- procfs: Add support for showing CPU in the taste status if SMP is
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enabled.
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* Networking:
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- ARP: Add support for IOCTL commands to manage the ARP table.
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- IEEE 802.15.4 and 6LowPAN: There are some radio drivers and a
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directory structure is in place. However, most of this
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development is occurring on a fork and is not yet available in the
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NuttX repositories. Hopefully in NuttX-7.16.
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* Common Device Drivers:
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- ADS1242: Driver for the 24-Bit Differential Input ADC ADS1242 that
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communicates via SPI with a MCU. Reading the ADC conversion result
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as well as configuring the ADC, setting the input channel, etc. is
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implemented via ioctl calls. However, it does not yet implement
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the standard ADC interface. From Alexander Entinger.
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- U-Blox Modem: Add an upper half driver for the U-Blox Modem. From
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Vladimir Komendantskiy.
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- I2C: Add an I2C, "upper half", character drivers to support raw I2C
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data transfers for test applications.
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- RGB LED: Add a driver to manage a RGB LED via PWM. From Alan
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Carvalho de Assis.
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- Performance Monitoring: Add a character driver that will allow an
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application to read buffered scheduler instrumentation data.
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* Simulation Platform:
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- SMP: Add multi-CPU support to the simulation to support SMP
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investigation. There are issues with the simulation and it is less
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than perfect but sufficient for some very preliminary testing of
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the core SMP feature.
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* ARMv7-A, ARMv7-R, and ARMv7-M:
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- ARMv7-A, ARMv7-R, and ARMv7-M: Add test-and-set logic and
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definitions needed to supports spinlocks.
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- ARMv7-A: Added MPCOre Generic Interrupt Controller (GICv2) and
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Global Timer support
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- ARMv7-A: Now includes in MCU-specific hooks needed for SMP support.
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* Atmel SAMV7 Drivers:
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- HSMSI: HSMCI driver can now be configured to handle unaligned data
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buffers.
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* NXP Freescale LPC11xx/17xx/43xx and LPC2378 Drivers:
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- I2C: Backported the LPC43XX I2C driver, replacing the LPC11XX,
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LPC17XX, and LPC2378 I2C drivers. This gives us the I2C_TRANSFER
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method in all I2C drivers.
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* NXP Freescale LPC17xx Boards:
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- Support for the u-blox GSM and GPS module evaluation board with
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NXP LPCExpresso LPC1768. The GSM module is one of LISA-C200,
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LISA-U200 or SARA-G350. The GPS module is one of MAX-M7 or
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MAX-M8. From Vladimir Komendantskiy.
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* NXP Freescale i.MX6:
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- Basic support is in place for the i.MX6 Quad/Dual MCUs.
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Verification is, however, waiting for the receipt of hardware.
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* NXP Freescale i.MX6 Boards:
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- Sabre-6Quad: Basic support for the NXP/Freescale Sabre 6Quad
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board is in place but waiting for hardware for verification.
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* STMicro STM32:
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- STM32F46xx: Support for STM32F46xx from Paul Alexander Patience
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- STM32L4: Add support for the STM32L4 family. From Sebastien
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Lorquet.
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* STMicro STM32 Boards:
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- STM32F4 Discovery: Add PWM support for the onboard RGB LED. From
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Alan Carvalho de Assis.
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- Nucleo-L476: Add support for the Nucleo-L476 board. From Sebastien
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Lorquet.
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- STM32L476VG Discovery: Add support for the STM32L476VG Discovery
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board. From Dave.
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* Tools:
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- tools/refresh.sh now has a --silent option so that it can be used in
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batch modes without human input.
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* Build System:
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- Added a 'make olddefconfig' target that will refresh a .config file
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without interaction.
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* Applications: NSH
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- 'arp': Add an 'arp' command that will support access to the OS ARP
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table.
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- 'ps': The 'ps' command will show CPU if SMP is enabled.
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* Applications: apps/netutils:
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- apps/netutils/chat: Chat logic contributed by Vladimir
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Komendantskiy.
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- apps/netutils/netlib: Add utility functions to support accesses to
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the ARP table.
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* Applications: apps/examples:
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- apps/examples/chat: Chat example contributed by Vladimir
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Komendantskiy.
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- apps/system/ubloxmodem: Example to control the power
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state of the modem in nsh. From Vladimir Komendantskiy.
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- apps/examples/leds: An example to demonstrate use of LED driver.
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- apps/examples/smp: Add a test to verify SMP configurations.
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- apps/examples/rgbled: Example using the RGB LED driver to drive an
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RGB LED via PWM. From Alan Carvalho de Assis.
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- apps/examples/ostest: Add a test of TLS.
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- apps/examples/sched_note: Add a simple example to exercise the
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scheduler instrumentation logic.
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Bugfixes. Only the most critical bugfixes are listed here (see the
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ChangeLog for the complete list of bugfixes and for additional, more
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detailed bugfix information):
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* Core OS:
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- Signals: Move the list of signal actions from the TCB to the group
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structure. Signal handlers are not per thread but, rather, per task
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group. I know, I preferred it the other way too, but this is more
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compliant with POSIX.
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- Semaphores: Add an internal, non-standard interface to reset a
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semaphore count. This is sometimes needed by drivers in order to
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recover from error conditions. Were previously using sem_init()
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which is both inappropriate and incorrect if the semaphore count is
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negative.
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- Low-Priority Work Queue: Fix logic to find an IDLE worker thread;
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the test for busy was backward. From Linfei Chen.
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* File System/Block Drivers:
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- FAT: Add an option to force all transfers to be performed
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indirectly using the FAT file system's internal sector buffers.
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This is a fix for the case where the user provided buffers are not
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properly aligned for DMA (as with THTTPD).
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- MTD: Increase block size in mtd_geometry_s to 32-bits.
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* Common Drivers:
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- I2C: Restructured the I2C interface as necessary to eliminate some
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thread-safety issues inherent in the legacy I2C interface design.
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This effects the interface definition, all I2C clients, and all low-
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level I2C drivers. I have used caution, but I still expect a change
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of this magnitude to introduce some errors. Any bug reports of bug
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fixes will be much appreciated.
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- I2C_RESET: Eliminate up_i2creset(). It should not be a global
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function; Now it is an I2C interface method.
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- PCA555: Add logic to make the PCA555 driver thread safe.
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- syslog: If syslog timestamping is enabled, don't try to get the time
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if the timer hardware has not yet been initialized.
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- AT24xx driver: Correct missing address calculation logic. From Frank
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Benkert.
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* Networking:
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- Networking drivers that support CONFIG_NET_NOINTS: Fix a race
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condition that can cause the TX poll timer to stop running. From
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Manuel Stuhn.
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- Timer Poll: Fix some logic when there are multiple network
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interfaces. In this case, TCP timeout events can really only being
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processed when the poll from the correct device is received.
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* Atmel SAMV7 Drivers:
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- SAMV7 USB HS device: The USB driver has had some issue that would
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occasionally cause loss of packets. Back last December, a fix was
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put in for this but the fix apparently worsens the problem; now
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causing hangs. The basic problem is that the number of busy banks
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(NBUSYBKS) status is not real time but is delayed. This was fixed;
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now when the DMA completes and NBUSYBKS > 0, the NBUSYBK is
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interrupt is enabled and the operations are deferred until NBUSYBKS
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is truly zero.
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* Tools:
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- tools/testbuild.sh: .config files were not being updated because
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(a) kconfig-conf was being called in the wrong directory and (b)
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apps/Kconfig had not yet been created. Now uses 'make
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olddefconfig'.
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* Applications: apps/system:
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- apps/system/i2c: The I2C tool now obeys it OS interfacing: it now
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uses an I2C character driver to access the I2C bus.
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- apps/system/cdcacm, usbmsc, and composite: Use new boardctl()
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instead of calling directly in the OS when possible.
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* Applications: apps/netutils:
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- apps/netutils/dhcpd: DHCPD no longer calls directly into the OS but
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uses the new network IOCTL commands to modify the ARP table.
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* Applications: apps/modbus:
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- apps/modbus/nuttx/portserial.c: Was not returning an error on
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failure to open the device driver. From Olololshka kokoko.
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* Applications: apps/examples:
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- apps/examples/usbserial, composite, usbterm: Use new boardctl()
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instead of calling directly in the OS when possible. There are
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still a few bad OS calls for USB device interfaces that do not yet
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have boardctl() commands.
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* Applications: apps/platform:
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- Moved C++ initialization logic out of the RTOS and into the
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application space, specifically to apps/platform/board, where it
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belongs.
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