358 lines
13 KiB
Groff
358 lines
13 KiB
Groff
NuttX-7.4
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---------
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The 104th release of NuttX, Version 7.4, was made on August 15, 2014,
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and is available for download from the SourceForge website. Note
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that release consists of two tarballs: nuttx-7.4.tar.gz and
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apps-7.4.tar.gz. Both may be needed (see the top-level nuttx/README.txt
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file for build information).
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Additional new features and extended functionality:
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* Core OS:
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- Beginnings of a crypto/ subsystem from Max Neklyudov
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- Tickless operation: NuttX now supports a mode with no periodic
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timer interrupts. Rather, timed events are handle via an interval
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timer. This (1) lowers the rate of interrupt processing to timer
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events, (2) gives much high timing resolution, and (3) allows lower
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power modes of operation where the CPU is not constantly being
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interrupted by the timer.
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- Restructured the OS files under sched/ to better support the already
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modular nature of the RTOS.
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* Networking
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- Substantial directory and header file reorganization and renaming to
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make the NuttX networking implementation more modular.
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- Add network device ioctl to access PHY registers. From Daniel Lazlo
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Sitzer
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* Binary Loader:
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- Various changes associated with symbol tables from Pelle Windestam.
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* Graphics:
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- colorcmp(): New utility to compare two colors.
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- The initial background color is now configurable. Includes logic to
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eliminates multiple background updates to get the right color.
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- Minor configuration changes to handle mouse X/Y and touchscreen
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X/Y differently.
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* File System/Block Drivers:
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- SmartFS: Increase some variables from uint16_t to uint32_t to handle
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larger device sizes. From Ken Pettit.
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- Add configurable AES encryption support to the block-to-character
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(BCH) driver. This allows any block device to be accessed as an
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encrypted character device. From Max Nekludov
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- Add an MTD layer that will add read-ahead or write buffering to any
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MTD driver (incomplete).
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- Automounter: Add support for an auto-mounter that will automatically
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mount and unmount a file system a media is inserted and removed
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* Audio/Audio Drivers
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- WM8904 audio CODEC driver.
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- PCM .WAV file decoder. Fast forward implemented with sub-sampling
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(currently no rewind support).
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- Add a NULL audio device that can be used to simply unit-level testing
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of audio decoders.
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- Audio subsystem now supports interfaces for fast-forward and rewind
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needed by CMediaPlayer; add hooks for equalizer settings needed by
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the WM8904 CODEC.
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* Other Common Drivers:
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- MTD: Extend erase block size to 18-bits in order (decrease block
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size to 14-bits) to handle parts with large erase blocks. From Kosma
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Moczek
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- maxTouch: Add support for the Atmel maXTouch touchscreen controller.
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* Host Simulation:
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- Provides the timers needed to support the Tickless mode of operation.
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* Atmel SAM4C:
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- Add SAM4CM IPC register header file. From Max Neklyudov
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- Various fixes PMC and clock configuration for the SAM4CM port from
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Max Neklyudov
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* Atmel SAM4E/4S Drivers:
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- SAM4 AES driver. Contributed by Max Neklyudov
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* Atmel SAMA5:
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- Add logic to redirect all SAMA5D4 interrupts to the AIC
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- Add a configuration option to reserve DRAM for a framebuffer when
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executing out of DRAM. This optional was available before when
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executing out of NOR, but needs to work a little differently in
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this case.
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- Add SAMA5 slow (32.768KHz) clock support.
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- Add support for the ARM L2CC-PL310 L2 cache. The system runs with
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L2CC cache enabled but there is some issues still with the LCD DMA;
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I suspect that the memory timing configuration for L2CC needs to
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be tuned.
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- Provides the timers needed to support the Tickless mode of operation.
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* Atmel SAMA5 Drivers:
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- XDMAC-based HSCMI driver for the SAMA5D4
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- Adapt the SAMA5D3 LCDC driver to work with the SAMA5D4 which has
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no hardware cursor.
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- PIO: Add a new interface sam_pio_forceclk() that can be used to
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force PIO clocking on. I am afraid I was too conservative with
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PIO clocking in the initial design; this is the price.
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- TWI: Now supports the up_i2creset() method.
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- TWI: Use sam_pio_forceclk() so that we can read the current state
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of an open-drain output in the TWI reset logic.
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- SSC: SCC Frame Synch Delay and Start Delay are now configurable.
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- PCK: Add the slow clock and the main clocks as options for the
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PCK configuration.
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- Timer/Counter: Can now handle non-constant BOARD_MCK_FREQUENCY. Also
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now supports methods to attach client interrupt handlers
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- One shot and free-running timers. These are wrappers around the low
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level timer/counter logic to provide one-shot and free-running
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timers. These were developed to support the Tickless operation, but
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can be used for any purpose.
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* Atmel SAMA5 Board Support:
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- Add a boot loader that runs from ISRAM and loads an Intel HEX file
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into DRAM.
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- Add a configuration that will load a bootloader into AT25 Serial
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FLASH
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- SAMA5D4-EK NSH configuration supports many more features: RTC, HSCMI
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card detection, maXTouch touchscreen, TM7000 LCD, the command line
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media player (currently using the NULL audio device), automounter,
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and others.
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- SAMA5D4-EK: Add an NxWM configuration using the TM7000 LCD with
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the maXTouch multi-touch touchscreen.
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- SAMA5D4-EK NxWM: Uses new, larger icons in configuration instead of
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scaling.
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- SAMA5D4-EK NxWM: The NxPlayer and audio system are now enabled in
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the default configuration (but currently using the NULL audio
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device). The automounter is used to automatically mount media
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on an SD card.
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- SAMA5D3x-EK: Add a configuration to support the command line
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NxPlayer and to verify the WM8904 CODEC driver.
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* STMicro STM32:
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- Add support for the STM32F103RC and RD. From Kosma Moczek
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- Add a procfs entry to show the state of the CCM heap usage.
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From Pelle Winderstam
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* STMicro STM32 Drivers:
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- Unconfigure GPIO pins when closing a serial port to prevent back
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effects from back-powering on the TX pin. From Kosma Moczek
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* NXP LPC17xx Drivers:
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- ADC: Added burstmode ADC conversion mode, with CONFIG_ADC_BURSTMODE
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option in Kconfig. From Max
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- Ethernet: Added option to use the kernel worker thread to do most of
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the workload with CONFIG_NET_WORKER_THREAD option in Kconfig. From Max
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- Ethernet: Critical bugfix: From time to time (after some hours) the
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Ethernet receiver would lose one receive interrupt and the IP stack
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never recover because there is no receive watchdog as the transmit
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watchdog. From Max
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* NXP LPC17xx Boards:
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- mbed: Port ADC, DAC, and PWM logic from the configs/zkit-arm-1769.
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From Max
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- mbed: Eliminated a problem with PHY DP83848C : it doesn't need a
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specific initialization on mbed. From Max
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* Library:
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- Adds support for localtime. From Max Neklyudov
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* Configuration/Build System:
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- Make variable definitions 'static const' when possible to save RAM
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usage. From Kosma Moczek
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* Applications:
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- system/mdio: New PHY tool from Daniel Lazlo Sizter.
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- NSH: Networking logic modified to handler the case of SLIP
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transport. From Max Neklyudov.
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- NSH: Add a configuration to use a USB keyboard for the stdin
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device.
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- NSH: Software assigned MAC address is now configurable. From Lazlo.
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- NSH: Also add an option to let platform-specific logic select the
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MAC address.
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- NSH: There is now a configuration option that will bring up the
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network on an separate thread. Since the network bring-up is
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asynchronous, there are no serial console start-up delays due
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to the network negotiation time.
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- NxPlayer: Changes to integrate with Ken's NxWM::CMediaPlayer.
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- NxPlayer: Add interfaces for fast-forward and rewind needed by
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CMediaPlayer; add interface for equalizer settings needed by the
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WM8904.
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- NxPlayer: Supports new way of identifying the end of the audio
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stream (see the Audio section above).
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- Sudoku: Add a sudoku game.
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Bugfixes. Only the most critical bugfixes are listed here (see the ChangeLog for the complete list of bugfixes and for additional, more detailed bugfix information):
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* Graphics:
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- NxConsole: Fix scrolling for the case of the framebuffer device. In
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this case, the logic for clearing the vacated region at the bottom
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was missing so garbage would scroll up from the last, uncleared
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line.
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* Networking:
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- Important fix to the read-ahead buffer queue management: Consumed
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bytes were being trimmed from the head of the queue, but the queue
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head itself was not being updated. From Rony XLN.
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- Fix an error in SLIP escaping. From Max Neklyudov
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* Network Utilities:
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- Fix an include file ordering problem when CONFIG_NET_STATISTICS=y.
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- Move statistics from uip.h to new netstats.h to remove a circular
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inclusion problem
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- Various fixes for networking and tiny webserver from Max
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- webclient: Fix to offset calculation from Rony Xln. Prevents 0x0a
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at the beginning of lines.
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- webserver: Fix some configuration usage issues. From Max.
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- webserver: Missing logic to close sockets on loop termination.
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* File System / Block Drivers:
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- SmartFS: Fix for a bug that would show up if CONFIG_MTD_BYTE_WRITE
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was not selected and the SMART sector size was larger than the MTD
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device's block size (like it would be if using SMARTFS on larger
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flash devices). From Ken Pettit.
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* Audio:
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- Change how the end of the audio stream is detected by the leaf audio
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component. This used to be done by looking for the first partial
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buffer. That does not work with the in-place sub-sampling performed
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by the PCM decoder: That always reduces the size of the buffer so
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that all buffers only partially filled by the time they get to the
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leaf. Now, a flag is set in the audio buffer flags set to indicate
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the final buffer in the stream.
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* Common Drivers:
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- RAMLOG putc() method needs to set the errno and return EOF on a
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failure.
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- Add missing configuration option to select the MAX11802 touchscreen
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controller. From Petteri Aimonen
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* Atmel SAMA5D3/4:
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- Fix logic in conversion of physical and virtual DRAM addresses when
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running out of DRAM. This is an important bug fix for the SAMA5D3
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and 4 when running out of DRAM .
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- Critical SAMA5D3 and 4 bug fix: PIO clocking must be enabled for
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all input pins or else the value that is read never changes.
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* Atmel SAMA5D3/4 Drivers:
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- OHCI: Fix an error in a DEBUGASSERT statement. Caused an
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assertion to fire inappropriately when a low- or full-speed device
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was removed and CONFIG_DEBUG=y
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- OHCI: Pointers to allocated port values were not being
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nullified after being deallocated. This caused some assertions
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to fire when debug was enabled
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- SSC: Needs to account for data offset in audio buffer
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* ARMv7-M:
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- Correct the initial value of the BASEPRI register. This was
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apparently never being initialized! From Max
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* STMicro STM32 Drivers:
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- I2C: Fix missing configuration of GPIO pins in I2C driver. Fix
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from Alex D.
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- STM32 OTGFS device: Various changes to try to reduce that amount of
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time in interrupts handles and with interrupts disabled. From
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Petteri Aimonen
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* Atmel SAM3/4 Drivers:
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- Ethernet: Wrong bits being cleared before OR-ing in new settings.
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- Ethernet: Fix an error in the function that determines the number
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of free TX descriptors. This is an important bugfix on busy
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networks.
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- I2C: Test for read or write operation was reversed. How could
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this have worked before?
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* Atmel SAM3/4 Boards:
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- SAM4S Xplained-Pro: Correct description of LEDs and usage. From
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Kosma Moczek
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* Atmel SAMA5:
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- PIO: Fix definitions that could disable PIO interrupt support if only
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PIOE interrupts were enabled
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- PIO: Macro SAM_PION_VBASE is not define-able for the SAMA5D4 and must
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be replaced with a table lookup.
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- PIO: Fix a typo in Schmitt trigger configuration; Configure pin as a
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vanilla input first so that final pin configuration is more read-able
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(i.e., easier to debug)
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- PIO: Logic for Schmitt trigger selection backward
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- SAMA5D4: Correct system timer frequency. Input clock is MCK/2, not MCK.
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* Atmel SAMA5 Drivers:
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- Ethernet: Wrong bits being cleared before OR-ing in new settings.
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- Ethernet: Fix an error in the function that determines the number
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of free TX descriptors. This is an important bugfix on busy
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networks.
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- HSMCI: The 8-byte SCR transfer was failing silently with the DMA
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transfer, leaving the SD card in single bit mode. Fixed by adding
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a non-DMA read transfer mode.
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- HSMCI: Fix a problem on card insertion/removal callback handling.
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Interrupts were being disable so that the callbacks occurred with
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interrupts disabled. This resulted in loss of some interrupts and
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some not-so-good behaviors. The solution is to perform all
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callbacks on the work thread unconditionally
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* Atmel SAMA5 Boards:
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- PIO: Fix some cloned errors in SAM GPIO interrupt setup
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* NXP LPC17xx Drivers:
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- Ethernet: Comment out an assertion that is reported to fire
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inappropriately. From Max
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* Library:
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- stdint.h: Correct naming of [U]INT_LEASTn_{MAX|MIN} and
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[U]INT_FASTn{MAX|MIN}. From Kosma Moczek
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- unistd.h: POSIX definitions should be defined to a value. rom Kosma
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Moczek
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- Fixes associated with rint() and related interfaces in the math
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library.
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* Configuration/Build System:
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- NAME_MAX not available on SunOS; use FILENAME_MAX or MAXNAMELEN.
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Noted by Douglas Beattie
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* Applications:
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- NSH: if # appears on line, need to comment ignore additional
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commands on the line
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- NxPlayer: Check for file read errors and end-of-file with zero
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bytes read. Other error handling corrected as well.
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- NxPlayer: NxPlayer needs to set curbyte field to zero before
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enqueuing a buffer. Otherwise, it looks like beginning of the
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buffer has already been consumed.
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