94 lines
4.2 KiB
Plaintext
94 lines
4.2 KiB
Plaintext
******************************************************************************
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*** ChibiOS next Release Notes. ***
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******************************************************************************
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ChibiOS next is composed of several independent but inter-operable
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sub-projects: RT, NIL, HAL, EX.
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*** ChibiOS next highlights ****
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This release is focused on RTOS general improvements, both RT and NIL received
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a series of important improvements, new features have been added.
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*** ChibiOS next general improvements ***
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- Shared licensing headers under /os/licenses, now all products are handled
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by the same license include files.
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- New ChibiOS/EX subsystems. EX sits on top of HAL and provides portable
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drivers for devices residing the MCU like MEMS, sensors, memories,
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displays etc.
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- Shared RTOS components, now allocators, mailboxes and binary semaphores
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are usable by both RT and NIL.
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- Memory Pools now have a new variant named "Guarded Memory Pool" including
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a semaphore that guards the allocation function, the caller waits if there
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is not an object available in the pool.
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- FatFS 0.10b has been integrated.
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- Rationalized source tree to reduce code duplication.
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- New unit test library.
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- Test suites have been rewritten using an unique code generation system
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starting from XML descriptions.
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- Startup files have been separated from ports and licensed under Apache 2.0
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license, now it is possible to use ChibiOS startups and ld files in projects
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without RT, NIL, HAL or EX.
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- Improved GCC ld scatter files with multi RAM/Flash regions capability.
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- GCC makefiles system improvements.
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- Support for all new Nucleo and Discovery boards from ST.
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- CMSIS updated to version 4.50.
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- Enhanced shell with history and quoted parameters. Common commands have
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beed included in a shared module in order to avoid duplication in the
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various demos.
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*** What's new in RT/NIL ports ***
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- Common ports architecture. Now RTOS ports work for both RT and NIL, no
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more code duplication. Ports are now also licensed for both NIL and RT.
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- MPU use for hardware stack checking in ARMCMx port.
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*** What's new in RT 4.0.0 ***
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- Now uses the common ports architecture.
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- Now uses the new shared RTOS components.
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- New threading API, now creating static threads is even faster.
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- Extended priority range from 1..127 to 1..255.
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- Enhanced dynamic threading, safer and easier to use.
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- Enhanced Registry, it is now possible to find threads by name, by pointer
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or by working area.
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- Enhanced trace buffer, it is able to store events regarding not just threads
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but also IRQs, halts and user events. The trace record now stores both the
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"slow" system time and a RT stamp for increased accuracy.
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- New kernel hooks for a more flexible code instrumentation.
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- Removed I/O queues, now the HAL has an improved equivalent.
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- Experimental NASA OSAL implementation.
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- Posix simulator added.
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*** What's new in NIL 2.0.0 ***
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- Now uses the common ports architecture.
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- Now uses the new shared RTOS components.
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- Added implementation of thread queues directly in the kernel, removed it
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from NIL OSAL.
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- All new features are optional so there is no code size increase.
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- Enhanced source-level compatibility with RT.
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- Enhanced debug features.
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- State checker like in RT.
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- Parameters checks like in RT.
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*** What's new in HAL 5.0.0 ***
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- Improved serial driver.
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- It is possible to set a different buffer size for each port.
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- SW overruns and HW overruns now have a separate event flag.
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- Events handling in the PAL driver. Now it is able to support interrupts
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handling and callbacks.
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- EXT driver is still supported but marked as deprecated.
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- New interface for flash devices (used by EX).
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- New interfaces for accelerometer, barometer, compass, gyroscope,
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hygrometer and thermometer devices (used by EX).
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- Added an I2C bit banged driver as fall-back for faulty hardwares.
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- Improved OSAL architecture with shared sub-modules.
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- All file names have been prefixed by "hal_" in order to prevent collisions
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with 3rd parties files. This should make integration of external libraries
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much easier.
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- Improved behavior of HAL queues, now the timeout is absolute not just an
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inter-byte timeout.
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