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*** ChibiOS 18.2.0 Release Notes.                                          ***
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ChibiOS 18.2.0 is composed of several independent but inter-operable
sub-projects: RT, NIL, HAL, EX. Plus several external libraries
integrated in our structure: WolfSSL, FatFS and lwIP.

*** ChibiOS 18.2.0 highlights ****

This release is focused on features and  general improvements, HAL, RT and NIL
received a series of important improvements, new features have been added.

*** ChibiOS 18.2.0 general improvements ***

- WolfSSL 1.12.2 has been integrated. HTTPS demo added.
- FatFS 0.13 has been integrated.
- lwIP 2.0.3 has been integrated.
- CMSIS 5.1.1 has been integrated.
- Improved build system based on make.
- Improved integration with Eclipse, launch configurations have been
  centralized for many projects.
- Several HAL and test applications have become "multi projects", a single
  project is able to build for multiple targets/boards.
- Improved test engine.
- Added a test suite generator written in FTL, now it is possible to generate
  test code without the need of SPC5Studio.
- Added a board files generator written in FTL, now it is possible to generate
  board files without the need of ChibiStudio.

*** What's new in RT/NIL ports ***

- GHS compiler support added to the Power e200z port.

*** What's new in OS Library ***

- OS library now has its own test suite.
- Mailbox API names changed by adding "Timeout" to those function that have
  timeout capability, for consistency with the rest of the system.
- Added an "Objects Factory" to the OS Library, it allows to dynamically
  allocate reference-counted kernel objects/buffers or to register
  static objects. Allocated/registered objects can be retrieved by name.
- Added an "Objects FIFO" object to the OS Library, it allows to
  exchange complex objects between threads/ISRs. It is based on a
  mailbox and a guarded memory pool.
- Added alignment handling to memory pools.
- Added a new chGuardedPoolAllocI() API to the guarded memory pools.

*** What's new in RT 5.0.0 ***

- The type systime_t has been split in systime_t and sysinterval_t, the
  two can have different size. The system is now more rigorous in time
  handling, an absolute time is something different from an interval,
  sysinterval_t can be larger than the systime_t, this means that it is
  now possible to use very long intervals when the system time uses a small
  counter.
- Time conversion macros have been renamed in TIME_S2I(), TIME_MS2I(),
  TIME_US2(), TIME_I2S(), TIME_I2MS() and TIME_I2US. Conversion is now done
  by casting all operands to a large time_conv_t type improving safety by
  eliminating integer truncations.
- Time conversion functions have been renamed in: chTimeS2I(), chTimeMS2I(),
  chTimeUS2I(), chTimeI2S(), chTimeI2MS() and chTimeI2US().
- New functions have been added for dealing with operations with time and
  intervals: chTimeAddX() and chTimeDiffX().
- All functions that have a timeout parameter now take a sysinterval_t type
  instead of systime_t.
- Improved test suite.
- Enhanced Events API, added chEvtGetAndClearEventsI() and chEvtAddEventsI().
- The chconf.h configuration files now are tagged with the version
  number for safety. The system rejects obsolete files during
  compilation. Stronger checks are performed on chconf.h, now missing
  settings trigger an error instead of getting a default.

*** What's new in NIL 3.0.0 ***

- The type systime_t has been split in systime_t and sysinterval_t. The
  system is now more rigorous in time handling, an absolute time is
  something different from an interval.
- Time conversion macros have been renamed in TIME_S2I(), TIME_MS2I(),
  TIME_US2(), TIME_I2S(), TIME_I2MS() and TIME_I2US. Conversion is now done
  by casting all operands to a large time_conv_t type improving safety by
  eliminating integer truncations.
- New functions have been added for dealing with operations with time and
  intervals: chTimeAddX() and chTimeDiffX().
- All functions that have a timeout parameter now take a sysinterval_t type
  instead of systime_t.
- Improved test suite.
- The chconf.h configuration files now are tagged with the version
  number for safety. The system rejects obsolete files during
  compilation.

*** What's new in HAL 6.0.0 ***

- Added a Managed Flash Storage module to the HAL. This modules handles
  garbage collection, storage self-repair and wear leveling.
- Improved serial driver.
  - Added a "control" function to the channels interface, it allows to add
    custom features to the various implementations.
  - Added I-class functions to the serial driver: sdGetI(), sdReadI(),
    sdPutI() and sdWriteI().
- Improved PAL driver.
  - Added an user parameter to the PAL callbacks for consistency with other
    drivers.
  - Added blocking functions for edge synchronization: palWaitLineTimeout()
    and palWaitLineTimeoutS().
- Improved SPI driver.
  - Now there are multiple modes for CS handling: by PAL pad (previous one), by
    PAL line, by PAL port mask and LLD-specific.
  - Added circular continuous mode to the SPI driver.
- Improved CAN driver.
  - Added callback capability to the CAN driver. Now it is possible to use
    callbacks in place of classic events.
- Improved USB driver.
  - Added a usbWakeupHost() function for standby exit.
- Improved HAL queues to increase performance. Added new functions: iqGetI(),
  iqReadI(), oqPutI() and oqWriteI().

*** What's new in EX 1.0.1 ***

- No changes, few bug fixes.

*** What's new in AVR HAL support ***

- Added initial ATtiny167 support.
- Added initial ATXmega128a4u support.
- Improvement of SPI, EXT, PAL low level drivers.

*** What's new in STM32 HAL support ***

- Updated SPI drivers to implement the new circular mode of the HAL SPI
  driver model.
- Updated STM32F1xx headers to 1.6, STM32F3xx to 1.9, STM32L0xx to 1.10,
  STM32L4xx to 1.9, STM32H7xx to 1.1.
- Implemented PAL enhancements in GPIOv1, GPIOv2 and GPIOv3 implementations.
- Modified the STM32 OTGv1 driver to work without pump thread, transfers
  are now done in the ISR. The driver is now greatly simplified.
- Added STM32L496xx/STM32L4A6xx support.
- Added STM32F030x4 support.
- Added initial STM32H7xx support.
