54 lines
2.7 KiB
Plaintext
54 lines
2.7 KiB
Plaintext
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ChibiOS 3.0 is now composed of several independent but inter-operable sub-projects: RT, NIL, HAL.
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ChibiOS 3.0 general highlights
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- New files tree organization makes the system more modular.
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- A community-contributed code area is now part of the files architecture, it will allow for easier integration of contributed code without much screening.
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- Improved startup files, scatter files and build system.
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- New licensing options.
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- Free ChibiStudio IDE support.
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What's new in RT 3.0
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- MISRA 2012 compliant.
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- Entirely static for enhanced safety.
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- System data is now encapsulated in a single "ch" global structure for enhanced safety.
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- System integrity check runtime functionality for enhanced safety.
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- Tick-less kernel mode helps implement ultra-low-power devices.
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- High Resolution Virtual Timers module allows to specify very short intervals.
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- High Resolution system time.
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- Clock-cycle accurate Time Measurement module.
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- Clock-cycle accurate polled delays.
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- Statistic module provides high resolution measurement of threads, ISRs and critical zones.
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- New recursive locks in addition to the classical critical zone primitives.
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- New recursive mode for Mutexes.
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- Enhanced suspend/resume mechanism for threads.
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- CMSIS-compliant ARM Cortex-Mx port.
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- CMSIS RTOS API available.
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- Multi-compilers architecture for ports.
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- Codebase now compatible with GCC link time optimizations.
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What's new in HAL 3.0
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- MISRA 2012 compliant.
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- HAL is now entirely licensed under Apache 2.0 license.
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- HAL has been decoupled from RT. It can now be adapted to any reasonable RTOS or even used with no RTOS at all thanks to a new abstraction layer named OSAL. OSAL implementations are provided for RT, NIL, bare metal ARM Cortex-Mx cores, bare metal Power e200z cores.
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- New driver models for ST, I2S, DAC.
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- Revamped ADC, ICU, PWM, RTC, SDC, USB drivers.
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- Greatly improved STM32 family support, all sub-families have been added.
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- Support for new families expanding (Kinetis, Tiva, SPC5xx, RL78, RX62N).
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- Streams, channels, files and block devices abstract interfaces.
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New addition NIL 1.0
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- MISRA 2012 compliant.
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- Entirely static for enhanced safety.
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- No linked lists anywhere in the code for enhanced safety.
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- System data is encapsulated in a single "nil" global structure for enhanced safety.
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- Tick-less kernel mode helps implement ultra-low-power devices.
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- Ultra compact kernel, well below 1kB in its maximum configuration.
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- Upward compatible with RT, it implements a subset of the RT API.
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- Reduced RAM usage, 20-28 bytes for task and just 4 bytes for a semaphore on 32 bits architectures, half of that on 8/16 bits architectures.
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- ARM Cortex-Mx port based on CMSIS architecture.
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- Multi-compilers architecture for ports.
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