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Add history.txt for release V11.2.0
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History.txt
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History.txt
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Documentation and download available at https://www.FreeRTOS.org/
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Changes between FreeRTOS V11.1.0 and FreeRTOS V11.2.0 released Matrch 04, 2025
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+ Add CC-RH port for Renesas F1Kx devices. We thank @TrongNguyenR for their
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contribution.
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+ Add Pointer Authentication (PAC) and Branch Target Identification (BTI)
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support to the ARMv8-M ports. We thank @AhmedIsmail02 for their
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contribution.
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+ Add Floating Point Unit (FPU) support to the ARM_AARCH64 port. We thank
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@StefanBalt for their contribution.
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+ Add FPU Safe Application IRQ Handler suport to the ARM_AARCH64_SRE port.
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We thank @GhMarwen for their contribution.
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+ Add Privileged eXecute Never MPU attribute support to the ARMv8-M ports.
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We thank @AhmedIsmail02 for their contribution.
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+ Update XMOS xcore.ai port to be compatible with FreeRTOS Kernel version
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11. We thank @ACascarino for their contribution.
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+ ARM_CRx_No_GIC port updates:
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- Remove inline assembly and move assembly code to separate portASM.S
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file.
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- Add support for Floating Point Unit (FPU).
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- Add support to allow the application writer to handle SVC calls raised
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from the application code.
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- Add support for vApplicationFPUSafeIRQHandler.
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+ POSIX port updates:
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- Set PTHREAD_MUTEX_ROBUST attribute on the mutex to prevent application
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hangs when a thread dies while holding a mutex.
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- Avoid calling pthread_sigmask on non-FreeROS threads when
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vPortEndScheduler is called from a non-FreeRTOS thread. We thank
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@johnboiles for their contribution.
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- Remove unnecessary call to pthread_attr_setstacksize. We thank
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@hollinsky for their contribution.
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- Add an assert to catch if vPortYield is called from a non-FreeRTOS
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thread. We thank @johnboiles for their contribution.
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- Fix Posix port compilation on FreeBSD. We thank @tymmej for their
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contribution.
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+ Update the Xtensa port and move it to the Partner-Supported-Ports
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repository. We thank @ianstcdns for their contribution.
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+ Add vPortGenerateSimulatedInterruptFromWindowsThread API in the MSVC-MingW
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port to enable native windows thread to synchronize with FreeRTOS task
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through simulated interrupt.
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+ Update Windows port to use Waitable Timer instead of Sleep to improve tick
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accuracy. We thank @bknicholls and @leegeth for their contribution.
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+ Update the value of queueQUEUE_TYPE_SET to a unique value (5) to allow
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tracers to differentiate between queues and queue sets. We thank @schilkp
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for their contribution.
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+ Add traceSTARTING_SCHEDULER tracing hook to enable tracers to run code on
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startup. We thank @schilkp for their contribution.
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+ Define vApplicationGetTimerTaskMemory only when configUSE_TIMERS is set to
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1. We thank @HazardyKnusperkeks for their contribution.
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+ Reset xNextTaskUnblockTime in task notify FromISR APIs to allow the core
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to enter sleep mode at the earliest possible time when using tickless
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idle.
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+ Optimize xTaskIncrementTick for SMP by removing xYieldRequiredForCore. We
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thank @cymizer for their contribution.
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+ Update the SMP scheduler to re-select a core to yield when the core
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affinity of a ready task is changed.
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+ Update xEventGroupSetBits to read the event bits value to be returned to
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the caller while the scheduler is suspended. This fixes dereference after
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the event group is deleted by higher priority task. We thank @skotopes for
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their contribution.
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+ Optimize certain getter APIs by removing unnecessary calls to
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task{ENTER|EXIT}_CRITICAL() when the data access is atomic. We thank
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@GuilhermeGiacomoSimoes for their contribution.
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+ Optimize xTaskNotifyWait and ulTaskNotifyTake APIs to suspend the
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scheduler only if the task is not already notified, and the caller is
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willing to wait for the notification. We thank @jefftenney for
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their contribution.
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+ Fix error checking of prvCreateIdleTasks. We thank @kakkoko for their
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contribution.
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+ Update SMP lock macros and critical nesting macros to pass core ID as an
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argument. This reduces the number of accesses to a peripheral register to
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query core ID. We thank @felixvanoost for their contribution.
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+ Add stack pointer bounds check when configCHECK_FOR_STACK_OVERFLOW is set
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to 2 to improve reliability of stack overflow detection. We thank
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@jiladahe1997 for their contribution.
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+ Update run-time stats to include time elapsed since the last context
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switch for the currently running task.
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+ Add xQueueCreateSetStatic API for static creation of Queue Sets. We thank
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@kzorer for their contribution.
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+ Update the traceMALLOC() macro to pass the actual size of the allocated
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block for secure_heap, heap_2, heap_4 and heap_5. We thank @DazzlingOkami
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for their contribution.
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+ Update heap_1 to use heapADD_WILL_OVERFLOW macro to improve readability.
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We thank @wdfk-prog for their contribution.
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+ Add pointer protection to the pxNextFreeBlock member of the allocated
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block's metadata in heap_4 and heap_5 when configENABLE_HEAP_PROTECTOR is
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set to 1. We thank @Saiiijchan for their contribution.
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+ Allow the application writer to override pointer validation for heap_5
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when configENABLE_HEAP_PROTECTOR is used. We thank @Saiiijchan for their
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contribution.
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+ Add xPortResetHeapMinimumEverFreeHeapSize to heap_4.c and heap_5.c.
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We thank @TomasGalbickaNXP for their contribution.
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+ Add NULL check in the event_create function in the POSIX port. We thank
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@laroche for their contribution.
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+ Use _GNU_SOURCE macro instead of __USE_GNU in the Posix port. We thank
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@maxiaogood for their contribution.
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+ Use the new __ARM_FP macro instead of the deprectred __VFP_FP__ macro in
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GCC/ARM_CM7, GCC/ARM_CM4_MPU, and GCC/ARM_CM4F ports. We thank @haydenridd
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for their contribution.
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+ Add portMEMORY_BARRIER definition to the Xtensa port. We thank @superroc
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for their contribution.
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+ Move the hardware include msp430.h to port.c from portmacro.h. We thank
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@mayl for their contribution.
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+ Update ARM assembly syntax for Cortex-M ports. We thank @laroche for their
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contribution.
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+ Update the Windows port to records a pending yield in
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vPortCloseRunningThread to ensure that the next tick interrupt schedules
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the next task regardless of the value of configUSE_PREEMPTION.
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+ Fix the context switch issue in the RL78 port. We thank @KeitaKashima for
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their contribution.
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+ Fix compilation issue in ARM CM0 port when using Keil MDK. We thank
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@TomasGalbickaNXP for their contribution.
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+ Fix IA32 port compilation when configUSE_COMMON_INTERRUPT_ENTRY_POINT is
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set to 0. We thank @Ryzee119 for their contribution.
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+ Store configMTIMECMP_BASE_ADDRESS in a 64-bit integer for the RISC-V port.
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We thank @vishwamartur for their contribution.
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+ Fix nested interrupt handling and optimize FPU related context switching
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for the F1Kx port. We thank @TrongNguyenR for their contribution.
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+ Update the RP2040 port to add support for Raspberry Pi Pico SDK 2.0.0.
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We thank @kilograham for their contribution.
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+ Fix the return value of portYIELD_FROM_ISR macro for the MSVC-MingW port.
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We thank @wwhheerree for their contribution.
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+ Optimize vApplicationFPUSafeIRQHandler for the Coretex-A9 port by
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removing the unnecessarily preserved callee saved registers. We thank
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@Saiiijchan for their contribution.
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+ Fix the context array size for MPU ports to ensure the saved context
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location falls within the reserved context area rather than overlapping
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with the next MPU_SETTINGS structure member.
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+ Update CMake files for RP2040 port to fetch the port from the
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Community-Supported-Ports repo. We thank @kilograham for their
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contribution.
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+ Fix CMake file for the GCC ARM_CM0 port to include MPU files. We thank
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@0mhu for their contribution.
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+ Add an example of human readable table generated by vTaskListTasks() in
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the function documentation. We thank @wwhheerree for their contribution.
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Changes between FreeRTOS V11.0.1 and FreeRTOS V11.1.0 released April 22, 2024
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+ Add ARMv7-R port with Memory Protection Unit (MPU) support.
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