CMSIS 5.4.0

Known Issues

• MPU define for Armv7-M does not create correct values for RASR register. The parameters SubRegionDisable and Size are ignored. Do not rely on ARM_MPU_RASR nor ARM_MPU_RASR_EX.
• Startup code for Arm Compiler does not initialize heap correctly for full Arm C Library. Refer to the knowledgebase article 4094.

Release Notes

CMSIS-Core(M): 5.1.2

• Added Cortex-M1 support (beta).

CMSIS-Core(A): 1.1.2

• Removed using get/set built-ins FPSCR in GCC >= 7.2 due to shortcomings.
• Fixed co-processor register access macros for Arm Compiler 5.

CMSIS-DAP: 2.0.0

CMSIS-DSP: 1.5.2

CMSIS-Driver: 2.6.0

• Flash Driver API V2.2.0

CMSIS-NN: 1.1.0

• Added new math functions.

CMSIS-RTOS2: 2.1.3

• Additional functions allowed to be called from Interrupt Service Routines:
  • osThreadGetId
• RTX 5.4.0
  • Added support for Event Recorder initialization and filter setup.
  • Added support to use RTOS as Event Recorder Time Stamp source.
  • Fixed osDelayUntil longest delay (limited to 2^31-1).
  • Fixed optimization issue when using GCC optimization level 3.
  • Fixed osMemoryPoolAlloc to avoid potential race condition.
  • Restructured exception handling for Cortex-A devices.
  • Minor code optimizations (removed unnecessary checks).

Utilities

• SVDConv 3.3.21
• PackChk 1.2.71