Work In Progress

NuttX X.Y has not been released yet. These Release Notes are a work-in-progress in preparation for the next release of NuttX.  There is a board tracking the PRs that need to be looked at to add to this doc for the OS TODO ADD LINK and for the Apps TODO ADD LINK

What's New In This Release

Changes to Core OS

sched

* [#9084](https://github.com/apache/nuttx/pull/9084) sched: add adjtime() interface  
* [#9132](https://github.com/apache/nuttx/pull/9132) sched: add the CPU bitset to initialize the non-exclusive CPU  
* [#9583](https://github.com/apache/nuttx/pull/9583) sched: automatically find deadlocks when assert  
* [#7464](https://github.com/apache/nuttx/pull/7464) sched: fix context switching with locked scheduler  
* [#8965](https://github.com/apache/nuttx/pull/8965) sched: Fixed improper access of g_pidhash.  
* [#8867](https://github.com/apache/nuttx/pull/8867) sched: Optimize implementation of strsignal()  
* [#9030](https://github.com/apache/nuttx/pull/9030) sched/addrenv, binfmt: Always allocate address environment from heap  
* [#9090](https://github.com/apache/nuttx/pull/9090) sched/addrenv: Implement re-entrancy for addrenv_select()  
* [#9021](https://github.com/apache/nuttx/pull/9021) sched/addrenv: Miscellaneous clean-up and fixes  
* [#8938](https://github.com/apache/nuttx/pull/8938) sched/assert: Assert if a thread attempts to post a semaphore incorrectly.  
* [#9595](https://github.com/apache/nuttx/pull/9595) sched/assert: Change show_xxx to dump_xxx  
* [#9498](https://github.com/apache/nuttx/pull/9498) sched/assert: disable function/line print if DEBUG_ASSERTIONS_FILENAME disabled  
* [#9516](https://github.com/apache/nuttx/pull/9516) sched/assert: Optimizing assert handling  
* [#9183](https://github.com/apache/nuttx/pull/9183) sched/assert: show stacks with the sp from regs  
* [#9184](https://github.com/apache/nuttx/pull/9184) sched/assert: sig_timewait:remove useless assert  
* [#8955](https://github.com/apache/nuttx/pull/8955) sched/assert: Simplify the fatal detection logic  
* [#9528](https://github.com/apache/nuttx/pull/9528) sched/group: Ensure that the setting of tg_members if safe in SMP  
* [#9003](https://github.com/apache/nuttx/pull/9003) sched/irq: optimizing IRQMONITOR, move up_perf_convert to irq_procfs  
* [#9369](https://github.com/apache/nuttx/pull/9369) sched/misc: add coredump support on assert  
* [#8743](https://github.com/apache/nuttx/pull/8743) sched/nxmutex: mutex priority inheritance optimization  
* [#9066](https://github.com/apache/nuttx/pull/9066) sched/pthread: pthread_barrierwait can not be preemption  
* [#9067](https://github.com/apache/nuttx/pull/9067) sched/pthread: pthread_cond_wait dead lock  
* [#9002](https://github.com/apache/nuttx/pull/9002) sched/pthread: repalce sched_lock to enter_critical_section  
* [#9539](https://github.com/apache/nuttx/pull/9539) sched/pthread: Return ESRCH when the task is in the process of exit.  
* [#9202](https://github.com/apache/nuttx/pull/9202) sched/pthread: sched_lock should replace with enter_critical_secion  
* [#9091](https://github.com/apache/nuttx/pull/9091) sched/sem/sem_init: Change sem_xxx -> nxsem_xxx in kernel modules  
* [#8951](https://github.com/apache/nuttx/pull/8951) sched/semaphore: rework semaphore holder check for priority inheritance  
* [#9039](https://github.com/apache/nuttx/pull/9039) sched/sched: address performance concerns for sched_lock in non-SMP case  
* [#8988](https://github.com/apache/nuttx/pull/8988) sched/sched_note: add function auto-tracing  
* [#8786](https://github.com/apache/nuttx/pull/8786) sched/sig_timewait:changes the macro for waitticks  
* [#9203](https://github.com/apache/nuttx/pull/9203) sched/signal: fix the issue of asynchronous signal processing  
* [#9299](https://github.com/apache/nuttx/pull/9299) sched/signal: Signal must be masked when it is delivered to a signal handler  
* [#9100](https://github.com/apache/nuttx/pull/9100) sched/spawn: remove spawn proxy thread to simplify task/posix_spawn()  
* [#9527](https://github.com/apache/nuttx/pull/9527) sched/tls: remove PTHREAD_CLEANUP from Kconfig  
* [#9007](https://github.com/apache/nuttx/pull/9007) sched/wqueue: fix issue about worker can't wake up thread before work_thread running  

mm

* [#9417](https://github.com/apache/nuttx/pull/9417) mm: add invalid pid dump when malloc failed  
* [#9050](https://github.com/apache/nuttx/pull/9050) mm: circbuf support write or read buffer direct  
* [#9561](https://github.com/apache/nuttx/pull/9561) mm: compute the heap info more accuracy  
* [#9564](https://github.com/apache/nuttx/pull/9564) mm: Compute the heap info more accuracy(2)  
* [#9411](https://github.com/apache/nuttx/pull/9411) mm: Correct the callsite of mm_mallinfo  
* [#9435](https://github.com/apache/nuttx/pull/9435) mm: Dump all memory blocks on allocation failure  
* [#9555](https://github.com/apache/nuttx/pull/9555) mm: mm leak dump build error fix and memory foreach optimization  
* [#9601](https://github.com/apache/nuttx/pull/9601) mm: mm_lock.c: reformat preprocessor  
* [#9151](https://github.com/apache/nuttx/pull/9151) mm: memory allocations return valid pointer when request 0 size  
* [#9563](https://github.com/apache/nuttx/pull/9563) mm: Rename PID_MM_INVALID to PID_MM_LEAK  
* [#9560](https://github.com/apache/nuttx/pull/9560) mm: Rename mm_memdump_s to malltask  
* [#9335](https://github.com/apache/nuttx/pull/9335) mm: Support memdump can show increased memory  
* [#9476](https://github.com/apache/nuttx/pull/9476) mm/kmm_map: add missing FAR qualifiers  
* [#9368](https://github.com/apache/nuttx/pull/9368) mm/kmm_map: add support to dynamically map pages into kernel virtual 
* [#9055](https://github.com/apache/nuttx/pull/9055) mm/mm_map: give the mm_map as parameter to the mm_map functions  
* [#9488](https://github.com/apache/nuttx/pull/9488) mm/mempool: allocate a chunk for multiple mempool avoid memory fragmentation  
* [#9051](https://github.com/apache/nuttx/pull/9051) mm/mempool: fix bug, use incorrect free in mempool init  
* [#9418](https://github.com/apache/nuttx/pull/9418) mm/mempool: fix bug read out of bounds when realloc  
* [#9337](https://github.com/apache/nuttx/pull/9337) mm/mempool: fix bug when calculating mempool delta  
* [#9052](https://github.com/apache/nuttx/pull/9052) mm/mempool: fix memory consumption double counting issue  
* [#9433](https://github.com/apache/nuttx/pull/9433) mm/mempool: fix seqnumber statistics error in memdump  
* [#9474](https://github.com/apache/nuttx/pull/9474) mm/mempool: remove nexpend and totalsize from mempool_s  
* [#9336](https://github.com/apache/nuttx/pull/9336) mm/mempool: support when malloc failed dump mempool info  
* [#9416](https://github.com/apache/nuttx/pull/9416) mm/mempool: Support when malloc failed dump mempool info  

libs

* [#9284](https://github.com/apache/nuttx/pull/9284) libc: add regex implementation 
* [#9148](https://github.com/apache/nuttx/pull/9148) libc: Add setbuffer to stdio. 
* [#9062](https://github.com/apache/nuttx/pull/9062) libc: cleanup per-thread resource in exit/quick_exit 
* [#8958](https://github.com/apache/nuttx/pull/8958) libc: correct config define of arch functions 
* [#9480](https://github.com/apache/nuttx/pull/9480) libc: fix build break on kernel mode 
* [#9181](https://github.com/apache/nuttx/pull/9181) libc: fixed armv7-m strcmp build issue 
* [#9580](https://github.com/apache/nuttx/pull/9580) libc: lib_strftime: Fix %I to avoid printing 00:xx AM/PM 
* [#9557](https://github.com/apache/nuttx/pull/9557) libc: lib_syslograwstream: fix bug when iob alloc failed 
* [#9106](https://github.com/apache/nuttx/pull/9106) libc: memcpy M-profile PACBTI-enablement 
* [#9543](https://github.com/apache/nuttx/pull/9543) libc: netdev/upper: Optimize on quota related operations 
* [#8946](https://github.com/apache/nuttx/pull/8946) libc: print error code for unknown errors in strerror/gai_strerror 
* [#9585](https://github.com/apache/nuttx/pull/9585) libc: Support gcc FORTIFY_SOURCE features 
* [#9513](https://github.com/apache/nuttx/pull/9513) libc: Prefer to implement memfd on top of shm 
* [#9193](https://github.com/apache/nuttx/pull/9193) libc/armv8-m: fix build break if MVE is disabled 
* [#9497](https://github.com/apache/nuttx/pull/9497) libc/fdcheck: add fdcheck module 
* [#9536](https://github.com/apache/nuttx/pull/9536) libc/fdcheck: compatibility enhancement  
* [#9547](https://github.com/apache/nuttx/pull/9547) libc/fdcheck: Fix undefined reference to `getppid' 
* [#9405](https://github.com/apache/nuttx/pull/9405) libc/fdsan: add fdsan protection for all file pointers 
* [#9496](https://github.com/apache/nuttx/pull/9496) libc/fdsan: keep f_tag unchanged 
* [#9384](https://github.com/apache/nuttx/pull/9384) libc/libc.csv: Correct type of return value for strstr 
* [#8802](https://github.com/apache/nuttx/pull/8802) libc/locale: support iconv_open,iconv,iconv_close 
* [#9260](https://github.com/apache/nuttx/pull/9260) libc/misc: add Fdsan module 
* [#9076](https://github.com/apache/nuttx/pull/9076) libc/mm: fix files can not be compiled incrementally 
* [#9534](https://github.com/apache/nuttx/pull/9534) libc/netdb/dns: fix dns wrong response ID error 
* [#9238](https://github.com/apache/nuttx/pull/9238) libc/pthread: fix nxstyle errors 
* [#9199](https://github.com/apache/nuttx/pull/9199) libc/pthread: fixed pthread incorrect return values 
* [#9207](https://github.com/apache/nuttx/pull/9207) libc/qsort: fix invalid-pointer-pair if enable detect_invalid_pointer_pairs=2 
* [#9456](https://github.com/apache/nuttx/pull/9456) libc/regex: provide a separate kconfig for regex 
* [#9365](https://github.com/apache/nuttx/pull/9365) libc/stream/hexdump: add hexdump stream to dump binary to syslog  
* [#9138](https://github.com/apache/nuttx/pull/9138) libc/string: select arch's libc for kernel/userspace optionally 
* [#9605](https://github.com/apache/nuttx/pull/9605) libc/unistd: add getpgrp function 
* [#9448](https://github.com/apache/nuttx/pull/9448) libc/wchar: Implement vswprintf 
* [#9487](https://github.com/apache/nuttx/pull/9487) libdsp: Add average filter  
* [#9061](https://github.com/apache/nuttx/pull/9061) libm/newlib: add newlib/libm support 
* [#9083](https://github.com/apache/nuttx/pull/9083) libm/openlibm: add math library openlibm support. 
* [#9125](https://github.com/apache/nuttx/pull/9125) libm/libmcs: add math library libmcs support 
* [#9044](https://github.com/apache/nuttx/pull/9044) libxx: remove redundant code #9158 libelf: Support prioritized init and fini arrays 

Misc

* [#9610](https://github.com/apache/nuttx/pull/9610) binfmt: Always include arch/elf.h in include/nuttx/elf.h  
* [#9395](https://github.com/apache/nuttx/pull/9395) binfmt/elf: Support loading fully linked executables.  
* [#9426](https://github.com/apache/nuttx/pull/9426) binfmt/elf/coredump: alignment stack buffer to 64 to match gdb request  
* [#9376](https://github.com/apache/nuttx/pull/9376) binfmt/elf/coredump: add sanity checks for stack pointer  
* [#9366](https://github.com/apache/nuttx/pull/9366) binfmt/elf/coredump: add support of dump task stack without memory segments  
* [#9318](https://github.com/apache/nuttx/pull/9318) binfmt/elf/coredump: correct register offset after xcp.regs update  
* [#9099](https://github.com/apache/nuttx/pull/9099) binfmt/execmodule: correct destroy flow  
* [#9568](https://github.com/apache/nuttx/pull/9568) Debug:support python script auto debug nuttx kernel  
* [#9600](https://github.com/apache/nuttx/pull/9600) Fix assertion of free a wrong heap  
* [#9307](https://github.com/apache/nuttx/pull/9307) Fix windows compile errors because of double quotes in config   
* [#9147](https://github.com/apache/nuttx/pull/9147) include/err: Enforce c linkage for err and warn functions.  
* [#9459](https://github.com/apache/nuttx/pull/9459) include/nuttx/spi.h Fix SPIDEVID_TYPE macro definition    
* [#8956](https://github.com/apache/nuttx/pull/8956) Let BOARDIOC_SOFTRESETCAUSE_ASSERT equals to the default value of BOARD_ASSERT_RESET_VALUE  
* [#9274](https://github.com/apache/nuttx/pull/9274) modify type of numbytes in audio_buf_desc_s from uint16_t to apb_samp_t  
* [#9348](https://github.com/apache/nuttx/pull/9348) openamp: decoupling the transport layer and virtio device layer   
* [#9406](https://github.com/apache/nuttx/pull/9406) openamp: virtio.h add version field in device id table struct  
* [#9553](https://github.com/apache/nuttx/pull/9553) Openamp/Kconfig: add cache and debug config for openamp   
* [#9149](https://github.com/apache/nuttx/pull/9149) Remove #warning in the unnecessary places  
* [#9594](https://github.com/apache/nuttx/pull/9594) Replace $(INCDIR) and ${DEFINE} with $(INCDIR_PREFIX) and $(DEFINE_PREFIX)  
* [#8726](https://github.com/apache/nuttx/pull/8726) Replace the unsafe function(strcat, sprintf) with the safe one(strlcat, snprintf)    
* [#9509](https://github.com/apache/nuttx/pull/9509) sdcard: update sdcard detection to avoid 0xff asignment to bool type  
* [#9424](https://github.com/apache/nuttx/pull/9424) semantic/parser: fix compile warning found by sparse  
* [#9142](https://github.com/apache/nuttx/pull/9142) signal: add macro NSIG 
* [#9201](https://github.com/apache/nuttx/pull/9201) system/signal: in interrupting the context, regs modify logic error    

Changes to the Build System

Improvements

* [#9400](https://github.com/apache/nuttx/pull/9400) tools: Add way to get current defconfig name on runtime  
* [#9572](https://github.com/apache/nuttx/pull/9572) tools: Fix CONFIG_BASE_DEFCONFIG generation  
* [#9107](https://github.com/apache/nuttx/pull/9107) tools: Fix some error in Windows native build  
* [#9462](https://github.com/apache/nuttx/pull/9462) tools: Support string upper/lower case in make 
* [#9334](https://github.com/apache/nuttx/pull/9334) tools/mkallsyms: add exception handle 
* [#9069](https://github.com/apache/nuttx/pull/9069) tools/mksymtab: Fix a compilation warning 
* [#9210](https://github.com/apache/nuttx/pull/9210) tools/nuttx-gdbinit/armv7-a: reorder and synchronization registers of save/restore  
* [#9198](https://github.com/apache/nuttx/pull/9198) tools/nuttx-gdbinit: improve experience of gdb backend scripts  
* [#9234](https://github.com/apache/nuttx/pull/9234) tools/nuttx-gdbinit/armv7-a: add fpu support  
* [#9211](https://github.com/apache/nuttx/pull/9211) tools/Unix: treat kconfig warning as failure 
* [#9231](https://github.com/apache/nuttx/pull/9231) tools/refresh.sh: Add option to refresh all archs or all chips 


Architectural Support

New Architecture Support


* [#9465](https://github.com/apache/nuttx/pull/9465) initial FPU support for ARMv8R AARCH32 
* [#9443](https://github.com/apache/nuttx/pull/9443) Support for ARMv8R AARCH32

Improvements

* [#9115](https://github.com/apache/nuttx/pull/9115) arch: Return directly when arch not support interrupt context save 

* [#8823](https://github.com/apache/nuttx/pull/8823) arch: add more dependent header file 
* [#9296](https://github.com/apache/nuttx/pull/9296) arch: Save sigdeliver into xcp in the case of signal self delevery 
* [#9131](https://github.com/apache/nuttx/pull/9131) arch/assert: Distinguish between assert and exception 
* [#8948](https://github.com/apache/nuttx/pull/8948) arch/boards: fix stm32f411-mininum:nsh compilation failure 
* [#9343](https://github.com/apache/nuttx/pull/9343) arch/all: in smp pthread_cancel occasionally deadlock except for arm64 
* [#9313](https://github.com/apache/nuttx/pull/9313) arch/arm: Add a "cc" flag 
* [#8814](https://github.com/apache/nuttx/pull/8814) arch/arm: Add armv7m assembly strcpy. 
* [#9019](https://github.com/apache/nuttx/pull/9019) arch/arm: change up_saveusercontext to assembly code 
* [#8863](https://github.com/apache/nuttx/pull/8863) arch/arm: enable eoimode only select CONFIG_XXX_GIC_EOIMODE 
* [#9338](https://github.com/apache/nuttx/pull/9338) arch/arm: Fix Kconfig style and texts 
* [#9072](https://github.com/apache/nuttx/pull/9072) arch/arm: relax compiler check for workaround with "GCC 12.2" 
* [#9085](https://github.com/apache/nuttx/pull/9085) arch/arm: Resolving warnings for assembly instructions 
* [#9310](https://github.com/apache/nuttx/pull/9310) arch/arm: set arm_testset to weak function 
* [#9018](https://github.com/apache/nuttx/pull/9018) arch/arm: update running task when context switch occurred 
* [#9048](https://github.com/apache/nuttx/pull/9048) arch/arm/{armv7a/armv7r}l2cc: Don't repeat disabling the cache when the cache is already disabled 
* [#8930](https://github.com/apache/nuttx/pull/8930) arch/armv7-r: add armv7-r smp support 
* [#9311](https://github.com/apache/nuttx/pull/9311) arch/armv8-m: add ARMV8M_TRUSTZONE_HYBRID feature 
* [#9458](https://github.com/apache/nuttx/pull/9458) arch/armv8-r: Fix warning when configuring fvp-armv8r:nsh_smp 
* [#9478](https://github.com/apache/nuttx/pull/9478) arch/arm/backtrace: validate PC register before process unwind 
* [#9121](https://github.com/apache/nuttx/pull/9121) arch/arm/unwind: EABI unwind needs frame pointer support 

* [#9034](https://github.com/apache/nuttx/pull/9034) arch/arm/cxd56: Add lowerhalf interface to keep power when cold sleep 

* [#9469](https://github.com/apache/nuttx/pull/9469) arch/arm/gd32f4: add sdio driver for GD32F4 
* [#9493](https://github.com/apache/nuttx/pull/9493) arch/arm/gd32f4/Fixed Kconfig options for obsolete tickless systick options. 

* [#9325](https://github.com/apache/nuttx/pull/9325) arch/arm/imxrt: Base address missing from imxrt_flexio_get_shifter_buffer_address returned address 
* [#9607](https://github.com/apache/nuttx/pull/9607) arch/arm/imxrt: Fix implicit function declaration 
* [#9024](https://github.com/apache/nuttx/pull/9024) arch/arm/imxrt: FlexIO support 
* [#9324](https://github.com/apache/nuttx/pull/9324) arch/arm/imxrt: Wrong dlastsga or slast setting if doff or soff larger than one 

* [#9026](https://github.com/apache/nuttx/pull/9026) arch/arm/imx6: with ar8031 

* [#9346](https://github.com/apache/nuttx/pull/9346) arch/arm/kinetis: s32k1/s32k3:edma {s|d}last needs to be total xfer size 
* [#9001](https://github.com/apache/nuttx/pull/9001) arch/arm/kinetis/s32k3xx: EMAC MCAST support 

* [#9402](https://github.com/apache/nuttx/pull/9402) arch/arm/{nrf52|nrf53}: fix IN endpoint completion logic 
* [#9508](https://github.com/apache/nuttx/pull/9508) arch/arm/{nrf52|nrf53}: various fixes to improve USB stability 
* [#9444](https://github.com/apache/nuttx/pull/9444) arch/arm/{nrf52|nrf53}: validate if EasyDMA transfer is possible 
* [#9431](https://github.com/apache/nuttx/pull/9431) arch/arm/nrf52: add MCUboot support 
* [#9008](https://github.com/apache/nuttx/pull/9008) arch/arm/nrf52: add QSPI support 
* [#9387](https://github.com/apache/nuttx/pull/9387) arch/arm/nrf53: add QSPI support 
* [#8795](https://github.com/apache/nuttx/pull/8795) arch/arm/nrf53: add support for RPMSG HCI 
* [#9359](https://github.com/apache/nuttx/pull/9359) arch/arm/nrf53: add USBD support 
* [#8827](https://github.com/apache/nuttx/pull/8827) arch/arm/nrf52: nvmc and flash should depends on ALLOW_BSD_COMPONENTS=y 
* [#9340](https://github.com/apache/nuttx/pull/9340) arch/arm/nrf53: add I2C support ported from nrf52 
* [#9442](https://github.com/apache/nuttx/pull/9442) arch/arm/nrf53: add MCUboot support 
* [#9351](https://github.com/apache/nuttx/pull/9351) arch/arm/nrf53: add SPI support ported from nrf52 
* [#9356](https://github.com/apache/nuttx/pull/9356) arch/arm/nrf53: correct text config I2C3 Master 

* [#9252](https://github.com/apache/nuttx/pull/9252) arch/arm/sama5: add ATSAMA5D2/D4 Secure Fuse Controller (SFC) driver 
* [#9377](https://github.com/apache/nuttx/pull/9377) arch/arm/sama5: Add touchscreen calibration IOCTLs, structs, and implement for ATSAMA5D2 
* [#9215](https://github.com/apache/nuttx/pull/9215) arch/arm/sama5: Fix OHCI SchedulingOverrun interrupt storm. 
* [#9390](https://github.com/apache/nuttx/pull/9390) arch/arm/sama5: improve LCD support and correct minor errors 
* [#9286](https://github.com/apache/nuttx/pull/9286) arch/arm/sama5: Make EHCI work with slow devices. 
* [#9357](https://github.com/apache/nuttx/pull/9357) arch/arm/samv7: remove alignment check that is not needed 
* [#9112](https://github.com/apache/nuttx/pull/9112) arch/arm/sama5: SAMA5D2 Class D 
* [#9341](https://github.com/apache/nuttx/pull/9341) arch/arm/sama5: SAMA5D2 SPI DMA fix and Performance Enhancements 
* [#9157](https://github.com/apache/nuttx/pull/9157) arch/arm/sama5: Use a recursive mutex to fix OHCI deadlock. 

* [#9604](https://github.com/apache/nuttx/pull/9604) arch/arm/stm: Fix duplicate include guard 
* [#8992](https://github.com/apache/nuttx/pull/8992) arch/arm/stm32: Remove GPIO_{SPEED|MODE}_xxx and provide a legacy path for lazy migration 
* [#9491](https://github.com/apache/nuttx/pull/9491) arch/arm/stm32: Removed unused STM32_TICKLESS_SYSTICK Kconfig option. 
* [#8976](https://github.com/apache/nuttx/pull/8976) arch/arm/stm32/otg: rasie an assertion if IN request is not possible to transfer 
* [#8943](https://github.com/apache/nuttx/pull/8943) arch/arm/stm32/stm32_eth: Added error handling for abnormal interrupts. 
* [#8975](https://github.com/apache/nuttx/pull/8975) arch/arm/{stm32f7,stm32h7,stm32l4}/sdmmc: callback support requires HPWORK 
* [#9228](https://github.com/apache/nuttx/pull/9228) arch/arm/stm32h7: sdmmc It is not an error if no wait was needed 
* [#8945](https://github.com/apache/nuttx/pull/8945) arch/arm/stm32h7/otg: support for OTG HS external ULPI 
* [#8969](https://github.com/apache/nuttx/pull/8969) arch/arm/stm32h7/otgdev: FS transceiver must be enabled if OTGFS enabled 
* [#9006](https://github.com/apache/nuttx/pull/9006) arch/arm/stm32h7/rcc: make VOS0 configurable from board.h 
* [#9088](https://github.com/apache/nuttx/pull/9088) arch/arm/stm32_f7/h7_eth: Added error handling for abnormal interrupts. 
* [#9218](https://github.com/apache/nuttx/pull/9218) arch/arm/stm32f0l0g0: Fix stm32f0l0g0 GPIO definitions 

* [#9216](https://github.com/apache/nuttx/pull/9216) arch/arm/tiva: Fix i2c message buffer error 
* [#9441](https://github.com/apache/nuttx/pull/9441) arch/arm/tiva: start FPU before GPIO config 

* [#9515](https://github.com/apache/nuttx/pull/9515) arch/arm64: save FPU context when a context switch occurs in SMP mode 
* [#9464](https://github.com/apache/nuttx/pull/9464) arch/arm64: use adrp instead of adr in bss init code 
* [#9333](https://github.com/apache/nuttx/pull/9333) arch/arm64: support more interfaces for gicv3 
* [#9023](https://github.com/apache/nuttx/pull/9023) arch/arm64: Support tickless mode 
* [#9332](https://github.com/apache/nuttx/pull/9332) arch/arm64: Each core initializes its own idle stack in SMP 
* [#9315](https://github.com/apache/nuttx/pull/9315) arch/arm64: Support unalign cache clean. 
* [#9243](https://github.com/apache/nuttx/pull/9243) arch/arm64: Add support for Multiple UART Ports 
* [#9227](https://github.com/apache/nuttx/pull/9227) arch/arm64: merge serial_pl011.c and qemu_serial.c 
* [#8994](https://github.com/apache/nuttx/pull/8994) arch/arm64: fixed arm64 backtrace issue 
* [#8990](https://github.com/apache/nuttx/pull/8990) arch/Arm64: arm64 pmu supported 
* [#8876](https://github.com/apache/nuttx/pull/8876) arch/arm64: fixed cache issue and add more cache interface 
* [#9098](https://github.com/apache/nuttx/pull/9098) arch/arm64: Updating ARCH_EARLY_PRINT support 
* [#9065](https://github.com/apache/nuttx/pull/9065) arch/arm64: in smp pthread_cancel occasionally deadlock 
* [#9330](https://github.com/apache/nuttx/pull/9330) arch/arm64: .bss initialization using assembly language 
* [#9220](https://github.com/apache/nuttx/pull/9220) arch/arm64: preprocess link script to make configure more flexibly 
* [#8799](https://github.com/apache/nuttx/pull/8799) arch/arm64: Support for FPU profile with procfs 

* [#9118](https://github.com/apache/nuttx/pull/9118) arch/risc-v: Add option for selecting coherent DMA. 
* [#9114](https://github.com/apache/nuttx/pull/9114) arch/risc-v: change up_saveusercontext to assembly code 
* [#9123](https://github.com/apache/nuttx/pull/9123) arch/risc-v: Fix save/load FPU macros 
* [#9103](https://github.com/apache/nuttx/pull/9103) arch/risc-v: Fixed FPU register error 
* [#9597](https://github.com/apache/nuttx/pull/9597) arch/risc-v: litex/gpio: Fix incorrect declaration name. 
* [#9279](https://github.com/apache/nuttx/pull/9279) arch/risc-v: Remove riscv_copystate.c as it is not used a… 
* [#9485](https://github.com/apache/nuttx/pull/9485) arch/risc-v: Store user context into the kernel stack 
* [#9248](https://github.com/apache/nuttx/pull/9248) arch/risc-v/addrenv: Create utility function for dynamic mappings 
* [#9481](https://github.com/apache/nuttx/pull/9481) arch/risc-v/backtrace: correct stack pointer if enable ARCH_KERNEL_STACK 
* [#9538](https://github.com/apache/nuttx/pull/9538) arch/risc-v/barrier: Define more granular memory barriers 
* [#8787](https://github.com/apache/nuttx/pull/8787) arch/risc-v/kernel mode: Add a stripped down, native version of SBI for NuttX 
* [#9526](https://github.com/apache/nuttx/pull/9526) arch/risc-v/vfork: Replace jal with call for long jump 
* [#9192](https://github.com/apache/nuttx/pull/9192) arch/risc-v/litex: Fix emac driver compilation when only IPv6 is used. 
* [#9586](https://github.com/apache/nuttx/pull/9586) arch/risc-v/espressif: Add full GPIO support 
* [#8957](https://github.com/apache/nuttx/pull/8957) arch/risc-v/espressif: Add support for Periodic and Oneshot Timers 
* [#8980](https://github.com/apache/nuttx/pull/8980) arch/risc-v/espressif: Add support for RTC subsystem 
* [#8953](https://github.com/apache/nuttx/pull/8953) arch/risc-v/espressif: Add support for Tickless mode 
* [#8954](https://github.com/apache/nuttx/pull/8954) arch/risc-v/espressif: Panic if CPU interrupt allocation fails 
* [#9545](https://github.com/apache/nuttx/pull/9545) arch/risc-v/espressif: Update esp-hal-3rdparty library 
* [#8971](https://github.com/apache/nuttx/pull/8971) arch/risc-v/espressif: Use spinlock APIs for defining critical sections 

* [#8973](https://github.com/apache/nuttx/pull/8973) arch/risk-v/k210: Fix k210 timer on QEMU 6.1 or later 

* [#9548](https://github.com/apache/nuttx/pull/9548) arch/risc-v/mpfs: add CoreMMC support 
* [#9439](https://github.com/apache/nuttx/pull/9439) arch/risc-v/mpfs: Add CoreSPI driver for Polarfire SoC 
* [#9440](https://github.com/apache/nuttx/pull/9440) arch/risc-v/mpfs: Add mpfs_vbus_detect 
* [#9419](https://github.com/apache/nuttx/pull/9419) arch/risc-v/mpfs: add support for CoreI2C fpga driver 
* [#9489](https://github.com/apache/nuttx/pull/9489) arch/risc-v/mpfs: Enable KMM_MAP for knsh 
* [#9212](https://github.com/apache/nuttx/pull/9212) arch/risc-v/mpfs: Fix some logic errors in the driver 
* [#9430](https://github.com/apache/nuttx/pull/9430) arch/risc-v/mpfs: Modify mpfs_i2c.c to support arbitrary number o… 
* [#9461](https://github.com/apache/nuttx/pull/9461) arch/risc-v/mpfs: Minor fixes / tweaks to the driver 
* [#9503](https://github.com/apache/nuttx/pull/9503) arch/risc-v/mpfs: Remove MMU mappings and flush TLB upon boot 

* [#9081](https://github.com/apache/nuttx/pull/9081) arch/rv-virt/knsh64: increase proxy stack size to avoid overflow 
* [#9075](https://github.com/apache/nuttx/pull/9075) arch/rv-virt/nsh64: enable CONFIG_BCH to support block device access 

* [#9312](https://github.com/apache/nuttx/pull/9312) arch/xtensa: only cmp fpu coprocessor for fpu test 
* [#8977](https://github.com/apache/nuttx/pull/8977) arch/xtensa: Remove FAR qualifier for Xtensa-specific files 
* [#9401](https://github.com/apache/nuttx/pull/9401) arch/xtensa/esp32: Add missing SPI Flash ROM functions 
* [#8993](https://github.com/apache/nuttx/pull/8993) arch/xtensa/esp32: Add support for universal mac addresses 
* [#9082](https://github.com/apache/nuttx/pull/9082) arch/xtensa/esp32: BLE Bugfix 
* [#9078](https://github.com/apache/nuttx/pull/9078) arch/xtensa/esp32: enable LIBC_ARCH_ATOMIC 
* [#9020](https://github.com/apache/nuttx/pull/9020) arch/xtensa/esp32: ESP32 not use IMEM in user heap mode 
* [#9408](https://github.com/apache/nuttx/pull/9408) arch/xtensa/esp32: Fix build issues for SoftAP mode 
* [#9236](https://github.com/apache/nuttx/pull/9236) arch/xtensa/esp32: Fix himem driver crash in SMP mode 
* [#8926](https://github.com/apache/nuttx/pull/8926) arch/xtensa/esp32: fix signal deliver when task is running on ther CPU 
* [#8963](https://github.com/apache/nuttx/pull/8963) arch/xtensa/esp32: Fix Wi-Fi driver parameter settings 
* [#8974](https://github.com/apache/nuttx/pull/8974) arch/xtensa/esp32: Make asprintf and lib_free corresponding 
* [#9077](https://github.com/apache/nuttx/pull/9077) arch/xtensa/esp32: Ssd1306 
* [#9475](https://github.com/apache/nuttx/pull/9475) arch/xtensa/esp32: Support multiple PHY init data bin 
* [#9242](https://github.com/apache/nuttx/pull/9242) arch/xtensa/esp32[s2]: Define syscall table to enable using ROM functions 
* [#9542](https://github.com/apache/nuttx/pull/9542) arch/xtensa/esp32s2: Fix SPI DMA implementation 
* [#9361](https://github.com/apache/nuttx/pull/9361) arch/xtensa/esp32s3: add dedicated interrupt stack for ESP32-S3 by default 
* [#9110](https://github.com/apache/nuttx/pull/9110) arch/xtensa/esp32s3: Add RTC support 
* [#9156](https://github.com/apache/nuttx/pull/9156) arch/xtensa/esp32s3: add support to WPA3 on Station Mode 
* [#9525](https://github.com/apache/nuttx/pull/9525) arch/xtensa/esp32s3: Add USB OTG device driver 
* [#8979](https://github.com/apache/nuttx/pull/8979) arch/xtensa/esp32s3: call softAP callback when Wi-Fi driver TX is done 
* [#9367](https://github.com/apache/nuttx/pull/9367) arch/xtensa/esp32s3: pause other CPU before SPI flash operations 
* [#9549](https://github.com/apache/nuttx/pull/9549) arch/xtensa/esp32s3: SPI support quad I/O mode 
* [#9502](https://github.com/apache/nuttx/pull/9502) arch/xtensa/esp32s3: Support 32MB SPI flash 
* [#9380](https://github.com/apache/nuttx/pull/9380) arch/xtensa/esp32s3: Support 32MB PSRAM 
* [#9136](https://github.com/apache/nuttx/pull/9136) arch/xtensa/esp32s3: Support octal lines mode SPIRAM 
* [#9397](https://github.com/apache/nuttx/pull/9397) arch/xtensa/esp32s3: SPI slave driver 
* [#9232](https://github.com/apache/nuttx/pull/9232) arch/xtensa/esp32s3: use wapis init config to save Wi-Fi data 
* [#9255](https://github.com/apache/nuttx/pull/9255) arch/xtensa/esp32xx: Workaround to avoid printing serial trash character 

* [#9190](https://github.com/apache/nuttx/pull/9190) arch/sim: do not free memory of zero-length reallocation 
* [#9070](https://github.com/apache/nuttx/pull/9070) arch/sim: Implement text heap 
* [#9079](https://github.com/apache/nuttx/pull/9079) arch/sim: Move up_textheap_xxx to common place 
* [#9071](https://github.com/apache/nuttx/pull/9071) arch/sim: multi netdevice forward issue when ll_guardsize not 14 
* [#9472](https://github.com/apache/nuttx/pull/9472) arch/sim: Replace uart_[xmit|recv]chars_dma with uart_dma[txavail|rxfree] 
* [#9533](https://github.com/apache/nuttx/pull/9533) arch/sim: Support more sockopts on native socket 
* [#9208](https://github.com/apache/nuttx/pull/9208) arch/sim/asan: disable detect_invalid_pointer_pairs/detect_stack_use_after_return 
* [#8997](https://github.com/apache/nuttx/pull/8997) arch/sim/hostfs: pass flag O_BINARY to host 
* [#9186](https://github.com/apache/nuttx/pull/9186) arch/sim/lsan: disable fast-unwind by default 
* [#9468](https://github.com/apache/nuttx/pull/9468) arch/sim/ostest: enable priority inheritance testing 
* [#9291](https://github.com/apache/nuttx/pull/9291) arch/sim/posix/backtrace: process host backtrace with critical section 
* [#9518](https://github.com/apache/nuttx/pull/9518) arch/sim/posix/sim_hostusrsock: process host network syscall with critical… 
* [#9308](https://github.com/apache/nuttx/pull/9308) arch/sim/sim_alsa: modify buffer_size in GET_BUFFERINFO when offload capture. 
* [#8961](https://github.com/apache/nuttx/pull/8961) arch/sim/sim_x11eventloop: fix X11 event accumulation 
* [#9109](https://github.com/apache/nuttx/pull/9109) arch/sim/usbdev: fix unpaired critical_section() 
* [#8996](https://github.com/apache/nuttx/pull/8996) arch/sim/win/hostuart: only read key event from console 
* [#8995](https://github.com/apache/nuttx/pull/8995) arch/sim/win/hosttime: calculate sec/ms independently to avoid overflow 

Driver Support

New Drivers

* [#9189](https://github.com/apache/nuttx/pull/9189) drivers/audio: add support for the ES8311 codec  
* [#8775](https://github.com/apache/nuttx/pull/8775) drivers/audio: add audio_dma device driver.  
* [#9372](https://github.com/apache/nuttx/pull/9372) drivers/lcd: add JD9851 driver  
* [#8982](https://github.com/apache/nuttx/pull/8982) drivers/sensors: add support of InvenSense MPU-9250 sensor  
* [#9452](https://github.com/apache/nuttx/pull/9452) drivers/sensors: add BMI270 IMU support  
* [#9453](https://github.com/apache/nuttx/pull/9453) drivers/sensors: add bh1749nuc color sensor support  
* [#9258](https://github.com/apache/nuttx/pull/9258) drivers/virtio: add virtio-mmio-blk driver Audio Support

Improvements


Audio Support

Improvements

* [#9381](https://github.com/apache/nuttx/pull/9381) audio: add channels range  
* [#9152](https://github.com/apache/nuttx/pull/9152) audio/pcm_decode: fix warnings regarding unused functions and vars  

Board Support

New Board Support

* [#9322](https://github.com/apache/nuttx/pull/9322)boards/nrf52: add initial support for Thingy:52 board  
* [#9323](https://github.com/apache/nuttx/pull/9323)boards/nrf53: add initial support for Thingy:53 board  

Improvements

File System

Improvements 

* [#9063](https://github.com/apache/nuttx/pull/9063) fs: Add g_ prefix to file_operations and mountpt_operations  
* [#8939](https://github.com/apache/nuttx/pull/8939) fs: Flush the file system cache in BOARDIOC_POWEROFF too 
* [#9521](https://github.com/apache/nuttx/pull/9521) fs: move memset to upper lever for statfs and add f_fsid field  
* [#9558](https://github.com/apache/nuttx/pull/9558) fs: some minor changed about the fs  
* [#9060](https://github.com/apache/nuttx/pull/9060) fs/cromfs: Fix faulty DEBUGASSERT() check  
* [#9000](https://github.com/apache/nuttx/pull/9000) fs/hostfs: align operation flags define with fcntl.h  
* [#8868](https://github.com/apache/nuttx/pull/8868) fs/hostfs: switch working directory  
* [#9550](https://github.com/apache/nuttx/pull/9550) fs/fdcheck: Let FDCHECK depend on SCHED_HAVE_PARENT  
* [#9009](https://github.com/apache/nuttx/pull/9009) fs/inode: Fixes in asprintf usage.  
* [#9093](https://github.com/apache/nuttx/pull/9093) fs/inode: when searching for nextname skip "/" and "./"  
* [#9037](https://github.com/apache/nuttx/pull/9037) fs/littlefs: littlefs shouldn't be used without C99 BOOL 
* [#9120](https://github.com/apache/nuttx/pull/9120) fs/littlefs: Add patch for littlefs to use kmm_malloc/free on kernel with MMU. Upgrade to latest littlefs  
* [#9140](https://github.com/apache/nuttx/pull/9140) fs/mtd: add support for MTDIOC_ERASESECTORS ioctl  
* [#9146](https://github.com/apache/nuttx/pull/9146) fs/mtd: Implement MTDIOC_ERASESTATE and MTDIOC_ERASESECTORS  
* [#9144](https://github.com/apache/nuttx/pull/9144) fs/mtd: minor fix for mtd/nand driver  
* [#9145](https://github.com/apache/nuttx/pull/9145) fs/mtd/nand: Add nand_raw_initialize to skip the probing  
* [#9347](https://github.com/apache/nuttx/pull/9347) fs/partition: register partition device if caller doesn't provide handler  
* [#9394](https://github.com/apache/nuttx/pull/9394) fs/procfs: add cpuinfo  
* [#8991](https://github.com/apache/nuttx/pull/8991) fs/procfs: add total time running time of task  
* [#9073](https://github.com/apache/nuttx/pull/9073) fs/procfs: fix readdir loss last character  
* [#9540](https://github.com/apache/nuttx/pull/9540) fs/vfs: Proper use of sigisemptyset  
* [#9205](https://github.com/apache/nuttx/pull/9205) fs/vfs: Zero file struct field with memset
* [#9385](https://github.com/apache/nuttx/pull/9385) fs/vfs/fs_poll: Fix wrong return value in CONFIG_BUILD_KERNEL  
* [#9576](https://github.com/apache/nuttx/pull/9576) fs/vfs/sendfile: Fixed behavior of sendfile when count is set to zero.  


Networking

Improvements

Security Issues Fixed In This Release

Compatibility Concerns

More Information

How to Download

Release artifacts for all current and past NuttX releases can be downloaded at:

How to Clone the Git Repository

The Apache NuttX project uses Git SCM as its version control system.

There are two primary repositories:

The main "Single Source of Truth" repositories are hosted by the ASF:

These are synchronized with repositories hosted at GitHub:

How to Contact the Community

The main forum for project communication, to ask a question, get involved, or contribute to NuttX, is our mailing list, dev@nuttx.apache.org. The list is publicly archived and searchable at https://lists.apache.org/list.html?dev@nuttx.apache.orgFor more information, see NuttX Community.

Enthusiastic Contributors Welcome!

NuttX is a free open-source project. If you'd like to participate, whether it's to enhance documentation (even these release notes) or dive into the nitty gritty of some low-level drivers, please join us! You can join the conversation at our dev mailing list by emailing dev-subscribe@nuttx.apache.org. The mailing list is open to the public and archived. You can browse older messages at https://lists.apache.org/list.html?dev@nuttx.apache.org.