Requirements
- µC/LIB V1.38.02 or more recent
- µC/CPU V1.31.00 or more recent
New Features & Improvements
ARM-Cortex-A50
- Added configuration options to enable EL3 and SIMD.
ARM-Cortex-M
- New generic port for the ARMv7-M family. Supports the ARM, CCS, GNU, and EWARM toolchain.
eSi-3250
- New port for the EnSilica eSi-32xx family. Supports the EDS toolchain.
MPC57xx-VLE
- New port for the NXP MPC57xx family. Supports the GNU toolchain.
Trace
- Support for the following trace tools is now included: Segger SystemView and Percepio Tracealyzer.
Deprecated Features
ARM-Cortex-R4
- Deprecated in favor of the ARM-Cortex-A port. May be removed in a future release.
ARM-Cortex-M3
- Deprecated in favor of the ARM-Cortex-M port. May be removed in a future release.
ARM-Cortex-M4
- Deprecated in favor of the ARM-Cortex-M port. May be removed in a future release.
Obsolete Features
Multi-Pend
- The multi pend feature is now obsolete and has been removed.
Deferred Interrupts
- Deferred interrupt processing is now obsolete and has been removed.
API Changes
Removed
- OSPendMulti()
- os_pend_multi.c
- os_int.c
Added
- os_trace.h
Bug Fixes
ARM-Cortex-M0
- Context switches now save R8-R11 as well.
ARM-Cortex-M3
- The ISR stack is now aligned to the 8-byte boundary, as required by the ARM procedure call standard.
ARM-Cortex-M4
- Fixed an issue with the port which caused stack corruption if the first running task used an FPU stack frame.
C28x
- Added OSInitHook() code which initializes the kernel's global variables to 0. This is a workaround for the C28x toolchain
- The Context switch code now uses the appropriate 16-bit MOV operations when handling task priorities.
Core
- Fixed a race condition in OSTaskDel() which sometimes caused a context switch before the error argument was assigned a value.
- When resetting a periodic timer with 0 initial delay, the timer is now reset to the period value rather than the initial delay.
- Posting to task semaphores or queues no longer causes a null pointer dereference when debug variables are enabled.
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