Table of Contents

Work In Progress

Warning

title	Work In Progress

NuttX 12.1.0 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

Markdown

* [#8881](https://github.com/apache/nuttx/pull/8881) Correct Real Time signal definitions. #8881 

* [#8286](https://github.com/apache/nuttx/pull/8286) sched: Add _NSIG, SIGFPE, SIGILL and SIGSEGV definition 
* [#8686](https://github.com/apache/nuttx/pull/8686) sched: add critical section in nxsched_get_stateinfo 
* [#8708](https://github.com/apache/nuttx/pull/8708) sched: build error fix in task_exithook 
* [#4819](https://github.com/apache/nuttx/pull/4819) sched: Disable stdio api by default when DEFAULT_SMALL equals y 
* [#8642](https://github.com/apache/nuttx/pull/8642) sched: fix kconfig warning 
* [#8151](https://github.com/apache/nuttx/pull/8151) sched: fix task_delete crash in SMP case 
* [#8311](https://github.com/apache/nuttx/pull/8311) sched: fix run ltp_interfaces_sched_setscheduler_17_1 fail 
* [#8210](https://github.com/apache/nuttx/pull/8210) sched: Map both NZERO and PTHREAD_DEFAULT_PRIORITY to SCHED_PRIORITY_DEFAULT 
* [#8330](https://github.com/apache/nuttx/pull/8330) sched: Map SCHED_OTHER to SCHED_FIFO or SCHED_RR 
* [#7882](https://github.com/apache/nuttx/pull/7882) sched: remove unnecessary type cast 
* [#8374](https://github.com/apache/nuttx/pull/8374) sched: Remove the unused TCB_FLAG_SCHED_OTHER 
* [#7956](https://github.com/apache/nuttx/pull/7956) sched: assert: modify assert message 
* [#7957](https://github.com/apache/nuttx/pull/7957) sched: assert: Do not call the user space "exit" function 
* [#7952](https://github.com/apache/nuttx/pull/7952) sched: assert: Fix printing argv when address environments are in use 
* [#8224](https://github.com/apache/nuttx/pull/8224) sched: assert: sched: Implement tkill/tgkill 
* [#8556](https://github.com/apache/nuttx/pull/8556) sched: assert: sync ps/assert output 
* [#8897](https://github.com/apache/nuttx/pull/8897) sched: clock_gettime: Remove output log 
* [#8653](https://github.com/apache/nuttx/pull/8653) sched: env: add tg_envc in task_group_s to avoid some loops in code 
* [#8394](https://github.com/apache/nuttx/pull/8394) sched: getpid: replace syscall getpid/tid/ppid() to kernel version 
* [#8066](https://github.com/apache/nuttx/pull/8066) sched: group: fix task info heap-use-after-free 
* [#7997](https://github.com/apache/nuttx/pull/7997) sched: group: Fix memory corruption in group_leave.c 
* [#8282](https://github.com/apache/nuttx/pull/8282) sched: group: Implement group_drop() 
* [#8169](https://github.com/apache/nuttx/pull/8169) sched: group/addrenv: An assorment of fixes to address environment handling (part1)
* [#7995](https://github.com/apache/nuttx/pull/7995) sched: misc: add linux-like reboot notifier list 
* [#8035](https://github.com/apache/nuttx/pull/8035) sched: misc: assert: add a last type to call notifier 
* [#8158](https://github.com/apache/nuttx/pull/8158) sched: misc: assert: fix build break 
* [#8035](https://github.com/apache/nuttx/pull/8035) sched: misc: assert: add a last type to call notifier 
* [#8144](https://github.com/apache/nuttx/pull/8144) sched: misc: crash dump message added 
* [#7996](https://github.com/apache/nuttx/pull/7996) sched: misc: Rename panic.c to panic_notifier.c 
* [#7893](https://github.com/apache/nuttx/pull/7893) sched: note: Change sched_note_[begin|end] to macro 
* [#8521](https://github.com/apache/nuttx/pull/8521) sched: nxtask_sigchild: Set exit code when CONFIG_SCHED_CHILD_STATUS=y 
* [#8486](https://github.com/apache/nuttx/pull/8486) sched: nxtask_sigchild: Set process exit code to group exit code 
* [#8520](https://github.com/apache/nuttx/pull/8520) sched: pthread: change the wrong type cast 
* [#8505](https://github.com/apache/nuttx/pull/8505) sched: pthread: check pthread group after find joininfo 
* [#7923](https://github.com/apache/nuttx/pull/7923) sched: pthread: Delay pjoininfo allocation time 
* [#8150](https://github.com/apache/nuttx/pull/8150) sched: pthread: fix pthread exit error when set DETACHED 
* [#8170](https://github.com/apache/nuttx/pull/8170) sched: pthread： fixed pthread issue 
* [#8205](https://github.com/apache/nuttx/pull/8205) sched: pthread: Implement more pthread API 
* [#8209](https://github.com/apache/nuttx/pull/8209) sched: pthread: Implement pthread_gettid_np 
* [#8236](https://github.com/apache/nuttx/pull/8236) sched: pthread: restore C89 compliance in pthread_create 
* [#8336](https://github.com/apache/nuttx/pull/8336) sched: pthread: set default pthread name to parent's name 
* [#7909](https://github.com/apache/nuttx/pull/7909) sched: pthread: show thread main entry when display thread name 
* [#7877](https://github.com/apache/nuttx/pull/7877) sched: release_tcb: Do not release stack for user processes here 
* [#8182](https://github.com/apache/nuttx/pull/8182) sched: semaphore: Add the holder for mutex 
* [#7934](https://github.com/apache/nuttx/pull/7934) sched: semaphore: check sem flags before enable priority inheritance 
* [#8175](https://github.com/apache/nuttx/pull/8175) sched: semaphore: increase sem count when holder task exit 
* [#8074](https://github.com/apache/nuttx/pull/8074) sched: semaphore: Remove PRIOINHERIT_FLAGS_ENABLE and use SEM_PRIO_INHERIT instead 
* [#8057](https://github.com/apache/nuttx/pull/8057) sched: semaphore: sem_unlink: return ENOENT when the named semaphore does not exist. 
* [#8918](https://github.com/apache/nuttx/pull/8918) sched: semaphore: sem_waitirq: Fix semaphore wait interruption when MMU is in use 
* [#8452](https://github.com/apache/nuttx/pull/8452) sched: sched_note: add SCHED_NOTE_CUSTOM_BEGIN/END interface 
* [#8245](https://github.com/apache/nuttx/pull/8245) sched: sched_releasetcb: Revert 2 changes related to stack deallocation 
* [#8914](https://github.com/apache/nuttx/pull/8914) sched: signal: add SIGSYS 
* [#8312](https://github.com/apache/nuttx/pull/8312) sched: signal: Fix typo error in Kconfig(SIG_SEGA->SIG_SEGV) 
* [#8885](https://github.com/apache/nuttx/pull/8885) sched: signal: Increase the number of real time signals. Two is not enough. 
* [#8900](https://github.com/apache/nuttx/pull/8900) sched: signal: Remove configurable assignment of signal numbers 
* [#8884](https://github.com/apache/nuttx/pull/8884) sched: signal: remove unused SIGCONDTIMEDOUT 
* [#8740](https://github.com/apache/nuttx/pull/8740) sched: signal: sig_dispatch: Add signal action, if task is in system call 
* [#8605](https://github.com/apache/nuttx/pull/8605) sched: signal: sig_dispatch: Fix case where signal action is sent twice 
* [#8563](https://github.com/apache/nuttx/pull/8563) sched: signal: sig_dispatch: Signal action was not performed if TCB_FLAG_SYSC… 
* [#8763](https://github.com/apache/nuttx/pull/8763) sched: signal: sig_dispatch: Revert changes that cause a regression 
* [#7910](https://github.com/apache/nuttx/pull/7910) sched: task_setup: set sigprocmask directly to improve performance 
* [#8560](https://github.com/apache/nuttx/pull/8560) sched: task: task_cancelpt: Kill the child if it is not in a cancel point 
* [#8392](https://github.com/apache/nuttx/pull/8392) sched: waitpid: rename nx_waitpid() to nxsched_waitpid() 
* [#8832](https://github.com/apache/nuttx/pull/8832) sched: wqueue: Do as much work as possible in work_thread 
* [#8126](https://github.com/apache/nuttx/pull/8126) sched: wqueue: do work_cancel when worker is not null 
* [#8321](https://github.com/apache/nuttx/pull/8321) sched: wqueue: semaphore count should be consistent with the number of work entries.

...

Markdown

* [#8177](https://github.com/apache/nuttx/pull/8177) build: Add STACK_USAGE(-fstack-usage) to assist the stack analysis 
* [#8449](https://github.com/apache/nuttx/pull/8449) build/Kconfig: add BINDIR/APPSBINDIR to support out of tree build 
* [#8357](https://github.com/apache/nuttx/pull/8357) tools: add separate flags parameter for COMPILE/COMPILEXX
* [#8391](https://github.com/apache/nuttx/pull/8391) tools: ARCHIVE uses the full path
* [#8732](https://github.com/apache/nuttx/pull/8732) tools: arm: Add missing -mcpu param for zig
* [#8403](https://github.com/apache/nuttx/pull/8403) tools: checkpatch.sh: Check the source code doesn't set executable bit
* [#8379](https://github.com/apache/nuttx/pull/8379) tools: checkpatch: Added encoding check with cvt2utf 
* [#8379](https://github.com/apache/nuttx/pull/8379) tools: checkpatch: Added encoding check with cvt2utf 
* [#8347](https://github.com/apache/nuttx/pull/8347) tools: compile with full file path
* [#8347](https://github.com/apache/nuttx/pull/8347) tools: compile with full file path
* [#8443](https://github.com/apache/nuttx/pull/8443) tools: config: silent print of archive objects
* [#8442](https://github.com/apache/nuttx/pull/8442) tools: config: stack usage(.su) file should be removed on clean phase
* [#8674](https://github.com/apache/nuttx/pull/8674) tools: cxd56: Fix typo in mkspk tool
* [#8663](https://github.com/apache/nuttx/pull/8663) tools: Don't download tarball if a local git repo found
* [#7971](https://github.com/apache/nuttx/pull/7971) tools: Ensure removing Python related commands for macOS
* [#7993](https://github.com/apache/nuttx/pull/7993) tools: Ensure removing Python3.11 related commands for macOS
* [#8515](https://github.com/apache/nuttx/pull/8515) tools: Extract a valid trace line and resolve the address to a function name
* [#8310](https://github.com/apache/nuttx/pull/8310) tools: Extend mkdep buffer 
* [#8916](https://github.com/apache/nuttx/pull/8916) tools: export: LLVM style arch info for non-c language
* [#8870](https://github.com/apache/nuttx/pull/8870) tools: export: Add LDELFFLAGS to mkexport.sh.
* [#8425](https://github.com/apache/nuttx/pull/8425) tools: Fix Config.mk
* [#8494](https://github.com/apache/nuttx/pull/8494) tools: kconfig: add kconfiglib support
* [#8384](https://github.com/apache/nuttx/pull/8384) tools: Makefile: fix redundant delimiters when using make V=1 
* [#8378](https://github.com/apache/nuttx/pull/8378) tools: makefile: silent all compile output
* [#8381](https://github.com/apache/nuttx/pull/8381) tools: Make zig available for arm/riscv/sim
* [#8601](https://github.com/apache/nuttx/pull/8601) tools: make the symbol table generated by mkallsyms.py two-byte aligned 
* [#8305](https://github.com/apache/nuttx/pull/8305) tools: minidumpserver: add arm-a support 
* [#8142](https://github.com/apache/nuttx/pull/8142) tools: minidumpserver: replace stackdump to stack_dump 
* [#7938](https://github.com/apache/nuttx/pull/7938) tools: minidumpserver: sync the stackdump search string after #7875 
* [#8723](https://github.com/apache/nuttx/pull/8723) tools: nxstyle: add 'IRQn_Type' to whitelists
* [#8657](https://github.com/apache/nuttx/pull/8657) tools: nxstyle: add "NimMain" to whitelists.
* [#8559](https://github.com/apache/nuttx/pull/8559) tools: nxstyle: add "CMUnitTest" to nxstyle white list
* [#8307](https://github.com/apache/nuttx/pull/8307) tools: parsememdump.py: support show total pid memory
* [#8652](https://github.com/apache/nuttx/pull/8652) tools: parsememdump.py: Restore the execution permission bit
* [#8808](https://github.com/apache/nuttx/pull/8808) tools: parsetrace: fix context swtich parsing error
* [#8928](https://github.com/apache/nuttx/pull/8928) tools: riscv: Map extensions to certain cpu model for LLVM based toolc…
* [#8030](https://github.com/apache/nuttx/pull/8030) tools: script: support IPv6 in simhostroute.sh 
* [#8001](https://github.com/apache/nuttx/pull/8001) tools: script: enable forward in simhostroute.sh 
* [#8007](https://github.com/apache/nuttx/pull/8007) tools: syscall: export UP_WRAPSYM/UP_REALSYM macro 
* [#8419](https://github.com/apache/nuttx/pull/8419) tools: use relative paths when reverting to compile
* [#8586](https://github.com/apache/nuttx/pull/8586) tools: unix: use anonymous pipes to avoid menuconfig break
* [#8675](https://github.com/apache/nuttx/pull/8675) tools: Unix.mk: Add VERSION_ARG to argument of version.sh
* [#8308](https://github.com/apache/nuttx/pull/8308) tools: unix.mk: Pass APPDIR to arch's Makefile
* [#8582](https://github.com/apache/nuttx/pull/8582) tools: Updated python scripts interpreter invocation in tools/.
* [#8306](https://github.com/apache/nuttx/pull/8306) tools: version: generate dummy version without breakout
* [#8759: generate dummy version without breakout
* [#8759](https://github.com/apache/nuttx/pull/8759) treewide: add DOWNLOAD variable as unification of curl call

Architectural Support

New Architecture Support

Markdown

* [#8816](https://github.com/apache/nuttx/pull/#8816) risc-v: espressif: Add Espressif chip family support on top of esp-hal-3rdparty  
* [#8420](https://github.com/apache/nuttx/pull/#8420) risc-v: esp32c6: Add ESP32-C6 basic support 
* [#8466](https://github.com/apache/nuttx/pull/#8466) risc-v: hpm6750: add hpmicro chip

Improvements

Markdown

* [#8114](https://github.com/apache/nuttx/pull/8114) Revert "arch: Don't free the context if the reference doesn't equal z… 
* [#7982](https://github.com/apache/nuttx/pull/7982) arch: add volatile for regs in up_dump_register function 
* [#8283](https://github.com/apache/nuttx/pull/8283) arch: addrenv: Change group_addrenv_t to arch_addrenv_t 
* [#8355](https://github.com/apache/nuttx/pull/8355) arch: addrenv: Refactor address environment handling, by moving tg_addrenv out of the group structure 
* [#8227](https://github.com/apache/nuttx/pull/8227) arch: ARCH_KERNEL_STACK: Fix signal handling with kernel stack 
* [#8821](https://github.com/apache/nuttx/pull/8821) arch: arch_timer: fixed build issue when enable tickless 
* [#8241](https://github.com/apache/nuttx/pull/8241) arch: assert: switch from ASSERT(0/false) to PANIC 
* [#8192](https://github.com/apache/nuttx/pull/8192) arch: backtrace: use CURRENT_REGS when in interrupt context 
* [#8037](https://github.com/apache/nuttx/pull/8037) arch: change tcbinfo regs num 
* [#7915](https://github.com/apache/nuttx/pull/7915) arch: compiler.h: Add _ between format|printf|syslog|scanf|strftime and like 
* [#8253](https://github.com/apache/nuttx/pull/8253) arch: EXTRA_LIBS: link all staging library 
* [#8776](https://github.com/apache/nuttx/pull/8776) arch: fixed error in the calculation of nwords caused an out of bounds 
* [#8467](https://github.com/apache/nuttx/pull/8467) arch: group_addrenv: Fix call to group_addrenv for targets that don't need it 
* [#7895](https://github.com/apache/nuttx/pull/7895) arch: Make REG_[GET/SET]_FIELD thread safe for ESP SOCs 
* [#7875](https://github.com/apache/nuttx/pull/7875) arch: move stack and task dump to common code 
* [#8875](https://github.com/apache/nuttx/pull/8875) arch: Remove MIN macro definition 
* [#7973](https://github.com/apache/nuttx/pull/7973) arch: Remove the unused arch color function variant 
* [#8779](https://github.com/apache/nuttx/pull/8779) arch: Rename up_[early]serialinit to [arm64|riscv|x86_64][early]serialinit 
* [#7899](https://github.com/apache/nuttx/pull/7899) arch: remove up_release_pending function 
* [#8825](https://github.com/apache/nuttx/pull/8825) arch: remove unnecessary sem_setprotocol code 
* [#7955](https://github.com/apache/nuttx/pull/7955) arch: save user context in assert common code 
* [#8842](https://github.com/apache/nuttx/pull/8842) arch: Set the default value of ARCH for x86_64 
* [#8712](https://github.com/apache/nuttx/pull/8712) arch/boards: Rename up_lowputc to [arm64|renesas]_lowputc 

* [#8127](https://github.com/apache/nuttx/pull/8127) arm: Add missing kconfig for arm 
* [#8627](https://github.com/apache/nuttx/pull/8627) arm: backtrace/unwind: skip unaligned instruction 
* [#8730](https://github.com/apache/nuttx/pull/8730) arm: cache: add up_get_xcache_linesize() support 
* [#8866](https://github.com/apache/nuttx/pull/8866) arm: chip/sdio/muxbus: remove all undefined symbols 
* [#8746](https://github.com/apache/nuttx/pull/8746) arm: correct ARCH_HAVE_DSP to ARM_HAVE_DSP 
* [#8125](https://github.com/apache/nuttx/pull/8125) arm: Fix error in cache ops 
* [#7906](https://github.com/apache/nuttx/pull/7906) arm: fix typos in start files 
* [#8249](https://github.com/apache/nuttx/pull/8249) arm: make DSP arch extension configurable 
* [#8703](https://github.com/apache/nuttx/pull/8703) arm: armv7-a: fixed scu cpu tagram mask define issue 
* [#8157](https://github.com/apache/nuttx/pull/8157) arm: armv7-a/r: fix kconfig error of l2 cache latency 
* [#8036](https://github.com/apache/nuttx/pull/8036) arm: armv7-m/armv8-m: add faultmask register operation to 
* [#8737](https://github.com/apache/nuttx/pull/8737) arm: armv8-m: add missing zig flags 
* [#8717](https://github.com/apache/nuttx/pull/8717) arm: armv8-m: DSP extension is optional 
* [#8238](https://github.com/apache/nuttx/pull/8238) arm: armv8-m: Fix pthread_start syscall 
* [#7854](https://github.com/apache/nuttx/pull/7854) arm: armv8-m: support pmu api 
* [#8747](https://github.com/apache/nuttx/pull/8747) arm: armv8-m/cortex-m85: add support of PACBTI(Authentication and Branch Target Identification Extension) 
* [#8335](https://github.com/apache/nuttx/pull/8335) arm: itm_syslog: remove invaild select config 
* [#8360](https://github.com/apache/nuttx/pull/8360) arm: unwinder: set default unwinder type to arm exidx/extab 

* [#8678](https://github.com/apache/nuttx/pull/8678) arm: cxd56xx: Fix a freezing issue caused by power control 
* [#8677](https://github.com/apache/nuttx/pull/8677) arm: cxd56xx: Fix gnss poll when an event has already occurred 
* [#8877](https://github.com/apache/nuttx/pull/8877) arm: cxd56xx: Fix SPI transfer without DMA 
* [#8676](https://github.com/apache/nuttx/pull/8676) arm: cxd56xx: Update miscellaneous cxd56xx drivers 

* [#7884](https://github.com/apache/nuttx/pull/7884) arm: gd32f450: Add i2c driver for gd32f450 MCU 

* [#8707](https://github.com/apache/nuttx/pull/8707) arm: imx6: Fix a compilation error with UBSan 
* [#8603](https://github.com/apache/nuttx/pull/8603) arm: imxrt: d-cache write-back mode with networking 
* [#8684](https://github.com/apache/nuttx/pull/8684) arm: imxrt: Feature imxrt1064 mcuboot 
* [#8788](https://github.com/apache/nuttx/pull/8788) arm: imxrt: imxrt_flexpwm independent output B support added 
* [#8499](https://github.com/apache/nuttx/pull/8499) arm: imxrt: PWM trigger source selection option and update for Teensy 4.1 configuration 
* [#7929](https://github.com/apache/nuttx/pull/7929) arm: imxrt: serial: Fix selection of RTS to iflow 
* [#7868](https://github.com/apache/nuttx/pull/7868) arm: imxrt: Serial: LPUART_STAT_PF s/b LPUART_STAT_NF 

* [#7933](https://github.com/apache/nuttx/pull/7933) amr: lpc17xx_40xx: CAN driver SocketCAN enforce TX fifo behaviour 

* [#8803](https://github.com/apache/nuttx/pull/8803) arm: nrf52: fix device shutdown 
* [#8828](https://github.com/apache/nuttx/pull/8828) arm: nrf52: fix RTC tickless 
* [#8817](https://github.com/apache/nuttx/pull/8817) arm: nrf52: improvements for GPIOTE and buttons example for boards 
* [#8923](https://github.com/apache/nuttx/pull/8923) arm: nrf52: initial support for USBDEV 
* [#8725](https://github.com/apache/nuttx/pull/8725) arm: nrf52: minor fixes for SoftDevice 
* [#8702](https://github.com/apache/nuttx/pull/8702) arm: nrf52: use the lates SoftDevice release (v2.3.0) 
* [#8793](https://github.com/apache/nuttx/pull/8793) arm: nrf52/nrf53: various fixes 
* [#8804](https://github.com/apache/nuttx/pull/8804) arm: nrf53: add ADC support 
* [#8909](https://github.com/apache/nuttx/pull/8909) arm: nrf53: add GPIOTE support (GPIO interrupts) 
* [#8826](https://github.com/apache/nuttx/pull/8826) arm: nrf53: add PWM support 
* [#8908](https://github.com/apache/nuttx/pull/8908) arm: nrf53: add RTC and tickless support 
* [#8722](https://github.com/apache/nuttx/pull/8722) arm: nrf53: add SoftDevice support for the net core 
* [#8806](https://github.com/apache/nuttx/pull/8806) arm: nrf53: add TIM support 
* [#8805](https://github.com/apache/nuttx/pull/8805) arm: nrf53: add UID support 
* [#8770](https://github.com/apache/nuttx/pull/8770) arm: nrf53: add more register definitions (ported from nrf52) and some cosmetics for nrf52 
* [#8710](https://github.com/apache/nuttx/pull/8710) arm: nrf53: initial support for net core boot 
* [#8765](https://github.com/apache/nuttx/pull/8765) arm: nrf53: initial support for rptun 
* [#8807](https://github.com/apache/nuttx/pull/8807) arm: nrf53: initialize PM 

* [#7869](https://github.com/apache/nuttx/pull/7869) arm: s32k1xx: Add DMA to the s32k1 serial 
* [#7961](https://github.com/apache/nuttx/pull/7961) arm: s32k1xx: Add config option to enable UART invert setting. 
* [#7866](https://github.com/apache/nuttx/pull/7866) arm: s32k1xx: automatically calculate size of periphclocks array 
* [#8058](https://github.com/apache/nuttx/pull/8058) arm: s32k1xx: avoid buffer overflow when CAN time is used for non-FD CAN. 
* [#7887](https://github.com/apache/nuttx/pull/7887) arm: s32k3xx: Clean up 
* [#7931](https://github.com/apache/nuttx/pull/7931) arm: s32k3xx: EDMA fix get count 
* [#7901](https://github.com/apache/nuttx/pull/7901) arm: s32k1xx: Fix S32K1XX PM which was broken by #7869 
* [#7879](https://github.com/apache/nuttx/pull/7879) arm: s32k1xx: FlexCAN don't use a blocking wait in tx avail 
* [#7888](https://github.com/apache/nuttx/pull/7888) arm: s32k1xx: LPSPI use DMA 
* [#7921](https://github.com/apache/nuttx/pull/7921) arm: s32k3xx: MR-CANHUBK3 Add protected knsh support 
* [#7958](https://github.com/apache/nuttx/pull/7958) arm: s32k3xx: PHY MII/MMD support and TJA1103 support 
* [#7967](https://github.com/apache/nuttx/pull/7967) arm: s32k3xx: Progmem dataflash with littlefs support 
* [#8005](https://github.com/apache/nuttx/pull/8005) arm: s32k3xx: Progmem fixes and size config 
* [#7932](https://github.com/apache/nuttx/pull/7932) arm: s32k3xx: Serial add DMA 
* [#8223](https://github.com/apache/nuttx/pull/8223) arm: s32k3xx: serial Do not use TC use TDRE & TIE Bug Fix 
* [#7930](https://github.com/apache/nuttx/pull/7930) arm: s32k1xx: serial: Fix selection of RTS to iflow 

* [#7907](https://github.com/apache/nuttx/pull/7907) arm: samv7: add ARCH_RAMVECTORS support 
* [#7894](https://github.com/apache/nuttx/pull/7894) arm: sama5: Add Flexcom SPI support 
* [#7940](https://github.com/apache/nuttx/pull/7940) arm: sama5: Add SAMA5D2 MCAN support 
* [#8655](https://github.com/apache/nuttx/pull/8655) arm: samv7: add support for ADC conversion triggering with PWM 
* [#8597](https://github.com/apache/nuttx/pull/8597) arm: samv7: add support for complementary PWM output 
* [#8484](https://github.com/apache/nuttx/pull/8484) arm: sama5: add support for flexcom twi 
* [#8689](https://github.com/apache/nuttx/pull/8689) arm: samv7: add support for PWM fault protection 
* [#8480](https://github.com/apache/nuttx/pull/8480) arm: sama5: Changes to allow board-specific SAMA5 DRP/OTG support 
* [#8724](https://github.com/apache/nuttx/pull/8724) arm: sam34: Copy I2C_M_NOSTART support from sam7v/sam_twihs.c driver 
* [#8141](https://github.com/apache/nuttx/pull/8141) arm: sama5: Ensure SFR CKTRIM register correctly set, SAMA5D2/D3 only 
* [#8488](https://github.com/apache/nuttx/pull/8488) arm: samv7: fix compilation error when only DAC1 is configured 
* [#8104](https://github.com/apache/nuttx/pull/8104) arm: sama5: fix dma support for SAMA5 flexspi driver 
* [#8237](https://github.com/apache/nuttx/pull/8237) arm: samv7: fix issue when AFEC1 driver failed to open second time 
* [#8565](https://github.com/apache/nuttx/pull/8565) arm: samv7: fix MCAN build error 
* [#8479](https://github.com/apache/nuttx/pull/8479) arm: sama5: Fix sam_udphs to allow RNDIS to work 
* [#8490](https://github.com/apache/nuttx/pull/8490) arm: sama5: Fixes to PR that enables SAMA5 OTG/DRP support 
* [#7904](https://github.com/apache/nuttx/pull/7904) arm: sama5: serial and flexcom serial corrections 
* [#8714](https://github.com/apache/nuttx/pull/8714) arm: samv7: raise input flow control warning only for serial drivers 
* [#8745](https://github.com/apache/nuttx/pull/8745) arm: samv7: switch from printing numbers as signed to unsigned in QSPI 
* [#7941](https://github.com/apache/nuttx/pull/7941) arm: samv7: Update SAMV7 sam_mcan.c 

* [#8570](https://github.com/apache/nuttx/pull/8570) arm: stm32: Add UART4 & UART5 to high density stm32f103 chips 
* [#8880](https://github.com/apache/nuttx/pull/8880) arm: stm32: Fixed stm32 rcc and tim 
* [#8882](https://github.com/apache/nuttx/pull/8882) arm: stm32: otgdev: remove invalid use of the priv field for EP 
* [#8060](https://github.com/apache/nuttx/pull/8060) arm: stm32: protect TX buffer during CAN error frame generation. 
* [#8040](https://github.com/apache/nuttx/pull/8040) arm: stm32: unified up_perf initialization 
* [#8220](https://github.com/apache/nuttx/pull/8220) arm: stm32: foc: move the warning in the right place - should be in stm32f7 
* [#8569](https://github.com/apache/nuttx/pull/8569) arm: stm32: stm32_eth: Fixed alignment of Ethernet descriptors & buffers. 
* [#8566](https://github.com/apache/nuttx/pull/8566) arm: stm32: stm32_eth: Enabled store-end-forward. 
* [#8548](https://github.com/apache/nuttx/pull/8548) arm: stm32: stm32_eth: Busy bit is cleared before accessing the MACMIIAR register. 
* [#8502](https://github.com/apache/nuttx/pull/8502) arm: stm32: stm32_sdio: Fix in SDIO clocking configuration. 
* [#8212](https://github.com/apache/nuttx/pull/8212) arm: stm32/stm32f7: add support for BEMF sensing 
* [#8069](https://github.com/apache/nuttx/pull/8069) arm: stm32/stm32f7: CANv1: protect TX buffer during CAN error frame generation 
* [#8547](https://github.com/apache/nuttx/pull/8547) arm: stm32f7: Remove CPU lock on HW fail 
* [#8699](https://github.com/apache/nuttx/pull/8699) arm: stm32f7: stm32_i2c.c: Driver cleanup 
* [#8303](https://github.com/apache/nuttx/pull/8303) arm: stm32f7: stm32_i2c.c: Round up stm32_i2c_toticks return v… 
* [#8219](https://github.com/apache/nuttx/pull/8219) arm: stm32h7: add lower half timer driver 
* [#8124](https://github.com/apache/nuttx/pull/8124) arm: stm32h7: add SMPS PWR option for STM32H7X7 
* [#8536](https://github.com/apache/nuttx/pull/8536) arm: stm32h7: socketcan extended filter fixes 
* [#8250](https://github.com/apache/nuttx/pull/8250) arm: stm32h7: Support socket CAN error handling. 
* [#8055](https://github.com/apache/nuttx/pull/8055) arm: stm32wb: add i2c driver 

* [#8304](https://github.com/apache/nuttx/pull/8304) arm: tiva: Added SocketCAN driver implementation to the tiva chip, modified the … 
* [#8465](https://github.com/apache/nuttx/pull/8465) arm: tiva: Fix inability to control serial CTS/RTS via termios 
* [#8362](https://github.com/apache/nuttx/pull/8362) arm: tiva: Remove dead store 
* [#8475](https://github.com/apache/nuttx/pull/8475) arm: tiva: Serial TIOCxBRK BSD-compatible BREAK support 
* [#8405](https://github.com/apache/nuttx/pull/8405) arm: tiva: Support termios for Tiva 
* [#8406](https://github.com/apache/nuttx/pull/8406) arm: tiva: serial: Allow changing CTS/RTS with termios 

* [#8322](https://github.com/apache/nuttx/pull/8322) arm: tlsr82: Minor fix for telink tls82 chip 
* [#8252](https://github.com/apache/nuttx/pull/8252) arm: tlsr82: tc32 backtrace bug fix 

* [#8716](https://github.com/apache/nuttx/pull/8716) arm64: add arm64_serialinit/arm64_earlyserialinit 
* [#8665](https://github.com/apache/nuttx/pull/8665) arm64: ARMv8-r(Cortex-R82) support 
* [#8687](https://github.com/apache/nuttx/pull/8687) arm64: ARMv8-r(Cortex-R82) support( add FVP platform) 
* [#8009](https://github.com/apache/nuttx/pull/8009) arm64/a64: add driver for Allwinner A64 I2C bus 
* [#7865](https://github.com/apache/nuttx/pull/7865) arm64/A64: Add irq definition of Allwinner A64 interrupts #7939 arm64/a64: Add driver for MIPI DSI 
* [#8039](https://github.com/apache/nuttx/pull/8039) arm64/a64: Fix PIO Interrupt 
* [#7944](https://github.com/apache/nuttx/pull/7944) arm64/a64: Add driver for Display Engine 
* [#7962](https://github.com/apache/nuttx/pull/7962) arm64/a64: Add driver for Reduced Serial Bus 
* [#7919](https://github.com/apache/nuttx/pull/7919) arm64/a64: Add driver for TCON0 

* [#8476](https://github.com/apache/nuttx/pull/8476) mips: pic32mz: Serial support for termios 
* [#8550](https://github.com/apache/nuttx/pull/8550) mips: pic32mz: Serial TIOCxBRK BSD-compatible BREAK support 
* [#8540](https://github.com/apache/nuttx/pull/8540) mips: pic32mz: Fix PPS mappings for RPE5R register 
* [#8539](https://github.com/apache/nuttx/pull/8539) mips: pic32mz: Fix PPS register mapping defines 

* [#7970](https://github.com/apache/nuttx/pull/7970) qemu-rv: Fix qemu_rv_mtimer_interrupt() for BUILD_KERNEL 

* [#8180](https://github.com/apache/nuttx/pull/8180) risc-v: addrenv: Do not free physical memory for SHM area 
* [#7960](https://github.com/apache/nuttx/pull/7960) risc-v: addrenv: Test that satp contents make sense 
* [#8168](https://github.com/apache/nuttx/pull/8168) risc-v: addrenv_shm: Add missing sanity check to up_shmdt() 
* [#8226](https://github.com/apache/nuttx/pull/8226) risc-v: riscv_exception.c: Print the EPC value always 
* [#8461](https://github.com/apache/nuttx/pull/8461) risc-v: esp32c3: Add RTC interrupt support 
* [#8064](https://github.com/apache/nuttx/pull/8064) risc-v: esp32c3: correct receive buffer size 
* [#8415](https://github.com/apache/nuttx/pull/8415) risc-v: esp32c3: fix cpuint issue 
* [#7902](https://github.com/apache/nuttx/pull/7902) risc-v: esp32c3: Fix double initialization of SHA Accelerator 
* [#8265](https://github.com/apache/nuttx/pull/8265) risc-v: esp32c3: Fix IRQ initialization, it was crashing on DEBUG_ASSERTIONS 
* [#8671](https://github.com/apache/nuttx/pull/8671) risc-v: esp32c3: Fix missing irq timer 
* [#8636](https://github.com/apache/nuttx/pull/8636) risc-v: esp32c3: Fix WDT incorrect interrupt enable/disable 
* [#8014](https://github.com/apache/nuttx/pull/8014) risc-v: esp32c3: Modify the IRQ APIs to be compatible with ESP32/S2/S3 
* [#8673](https://github.com/apache/nuttx/pull/8673) risc-v: esp32c3: Remove erroneous interrupt disable 
* [#8934](https://github.com/apache/nuttx/pull/8934) risc-v: espressif: Add High Resolution Timer driver 
* [#8932](https://github.com/apache/nuttx/pull/8932) risc-v: espressif: Add Hardware RNG support 
* [#8931](https://github.com/apache/nuttx/pull/8931) risc-v: espressif: Add support for System Reset 
* [#8769](https://github.com/apache/nuttx/pull/8769) risc-v: espressif: Fix unwanted flush in the SPI slave driver 
* [#8222](https://github.com/apache/nuttx/pull/8222) risc-v: espressif: Stabilize MCUboot support on Espressif chips 
* [#8912](https://github.com/apache/nuttx/pull/8912) risc-v: espressif: Update revision of esp-hal-3rdparty 
* [#8529](https://github.com/apache/nuttx/pull/8529) risc-v: mpfs: add athena irq defines 
* [#8701](https://github.com/apache/nuttx/pull/8701) risc-v: mpfs: clear i2c ints before the transfer starts 
* [#8700](https://github.com/apache/nuttx/pull/8700) risc-v: mpfs: clear spi int before the transfer starts 
* [#8191](https://github.com/apache/nuttx/pull/8191) risc-v: mpfs: Make selection of SBI boot or direct boot run-time configu… 
* [#8368](https://github.com/apache/nuttx/pull/8368) risc-v: litex: Add GPIO driver. 
* [#8233](https://github.com/apache/nuttx/pull/8233) risc-v: litex: Allow custom peripheral memory mapping and IRQ. 
* [#8225](https://github.com/apache/nuttx/pull/8225) risc-v: litex: System clock frequency selectable from Kconfig. 
* [#8393](https://github.com/apache/nuttx/pull/8393) risc-v: litex: watchdog: fix Kconfig typo 

* [#7855](https://github.com/apache/nuttx/pull/7855) sim: add hostfs support for windows 
* [#8354](https://github.com/apache/nuttx/pull/8354) sim: add toolchain library libm 
* [#8143](https://github.com/apache/nuttx/pull/8143) sim: bug fix when open CONFIG_SIM_WALLTIME_SIGNAL 
* [#8468](https://github.com/apache/nuttx/pull/8468) sim: Fix bugs on sim 
* [#8519](https://github.com/apache/nuttx/pull/8519) sim: fix build break on visual studio 
* [#8850](https://github.com/apache/nuttx/pull/8850) sim: Fix iic/spi bus open failed 
* [#8031](https://github.com/apache/nuttx/pull/8031) sim: Fix make tool doesn't rebuild dependencies of the libboard target 
* [#8489](https://github.com/apache/nuttx/pull/8489) sim: fix nuttx consumes much CPU time 
* [#8255](https://github.com/apache/nuttx/pull/8255) sim: fix sim_x11events calls but sim_x11initialize() hasn't ready 
* [#7936](https://github.com/apache/nuttx/pull/7936) sim: Fix small video bugs 
* [#8497](https://github.com/apache/nuttx/pull/8497) sim: fix vfork report error 
* [#8254](https://github.com/apache/nuttx/pull/8254) sim: init events field when send ack/dack 
* [#7905](https://github.com/apache/nuttx/pull/7905) sim: Minor improvement for sim serial driver 
* [#8076](https://github.com/apache/nuttx/pull/8076) sim: move some i2c,spi configs from board to arch 
* [#8469](https://github.com/apache/nuttx/pull/8469) sim: realize sim timer tickless 
* [#7911](https://github.com/apache/nuttx/pull/7911) sim: Refine arch/sim implementation 
* [#7946](https://github.com/apache/nuttx/pull/7946) sim: remove unused variale in sim_saveusercontext() 
* [#8849](https://github.com/apache/nuttx/pull/8849) sim: sim_linuxi2c: fix snprintf parameter 
* [#8472](https://github.com/apache/nuttx/pull/8472) sim: sim_saveusercontext & sim_fullcontextrestore update 
* [#7928](https://github.com/apache/nuttx/pull/7928) sim: take timer irq as real timer with WALL_SIGNAL 
* [#8390](https://github.com/apache/nuttx/pull/8390) sim: alsa: add audio offload capture support. 
* [#7927](https://github.com/apache/nuttx/pull/7927) sim: alsa: don't let switch out when do poweroff & alsa mixer open 
* [#8251](https://github.com/apache/nuttx/pull/8251) sim: alsa: Minor improvement for sim alsa 
* [#8377](https://github.com/apache/nuttx/pull/8377) sim: alsa: support streaming data when offload playback. 
* [#7925](https://github.com/apache/nuttx/pull/7925) sim: fb: remove the lpwork in fb, merge to looper task 
* [#8423](https://github.com/apache/nuttx/pull/8423) sim: hcisocket: correct teardown device index 
* [#8078](https://github.com/apache/nuttx/pull/8078) sim: posix: sim_linuxspi.c: fix select not work and incorrect behaviour 
* [#8348](https://github.com/apache/nuttx/pull/8348) sim: rpserver/rpproxy: remove colon from syslog prefix 
* [#8470](https://github.com/apache/nuttx/pull/8470) sim: uart: add uart dma mode & use work instead of loop 
* [#8408](https://github.com/apache/nuttx/pull/8408) sim: uart: do uart_xmitchars() when tty_txint enabled 
* [#7926](https://github.com/apache/nuttx/pull/7926) sim: uart: fix printf error when use irq mode 
* [#8834](https://github.com/apache/nuttx/pull/8834) sim: uart: return -ENOTTY for cmd which don't support 
* [#8646](https://github.com/apache/nuttx/pull/8646) sim: Usb: add sim usb device and host driver 
* [#7898](https://github.com/apache/nuttx/pull/7898) sim: video: call validate_buf when set_buf 

* [#7786](https://github.com/apache/nuttx/pull/7786) xtensa: Add support for touch pad polling on ESP32 
* [#8672](https://github.com/apache/nuttx/pull/8672) xtensa: Fix Xtensa interrupt stack context restore issue 
* [#8372](https://github.com/apache/nuttx/pull/8372) xtensa: modify timer interrupt level large to XCHAL_IRQ_LEVEL level 
* [#8711](https://github.com/apache/nuttx/pull/8711) xtensa: Perform some build system cleanups 
* [#8121](https://github.com/apache/nuttx/pull/8121) xtensa: toolchain: add -Wno-atmoic-alignment flags 
* [#7762](https://github.com/apache/nuttx/pull/7762) xtensa: esp32: Add esp32_himem_chardev.c 
* [#8046](https://github.com/apache/nuttx/pull/8046) xtensa: esp32: Add option to enable ETH PHY reset pin 
* [#8202](https://github.com/apache/nuttx/pull/8202) xtensa: esp32: Add support for RTC IRQs 
* [#8248](https://github.com/apache/nuttx/pull/8248) xtensa: esp32: Add touch pad IRQ support 
* [#8051](https://github.com/apache/nuttx/pull/8051) xtensa: esp32: Add Wi-Fi softap event 
* [#8166](https://github.com/apache/nuttx/pull/8166) xtensa: esp32: Enable the allocation of Userspace heap exclusively in SPI RAM under Flat mode 
* [#8048](https://github.com/apache/nuttx/pull/8048) xtensa: esp32: ESP32 SPI Flash encryption supports 16-bytes align writing 
* [#8200](https://github.com/apache/nuttx/pull/8200) xtensa: esp32: fix lower half oneshot for usage with nxsched_oneshot_start 
* [#8171](https://github.com/apache/nuttx/pull/8171) xtensa: esp32: Fix SPI bugs 
* [#8050](https://github.com/apache/nuttx/pull/8050) xtensa: esp32: Optimize WLAN device buffer 
* [#8132](https://github.com/apache/nuttx/pull/8132) xtensa: esp32: Partition device supports encryption mode 
* [#8382](https://github.com/apache/nuttx/pull/8382) xtensa: esp32: Propagate RTC IRQ status register to lower levels 
* [#8783](https://github.com/apache/nuttx/pull/8783) xtensa: esp32: Tasks use PSRAM as stack can do SPI flash read/write/erase/map/unmap 
* [#8047](https://github.com/apache/nuttx/pull/8047) xtensa: esp32: SPI support to configure as R/W/RW mode 
* [#8838](https://github.com/apache/nuttx/pull/8838) xtensa: esp32: Update bootloader patch to recent ESP-IDF version 
* [#8096](https://github.com/apache/nuttx/pull/8096) xtensa: esp32s2: Add initial support for touch pad polling 
* [#8445](https://github.com/apache/nuttx/pull/8445) xtensa: esp32s2: Add pwm support using LEDC peripheral 
* [#8426](https://github.com/apache/nuttx/pull/8426) xtensa: esp32s2: Add support for RTC IRQs 
* [#8428](https://github.com/apache/nuttx/pull/8428) xtensa: esp32s2: Add support for touch pad interrupts 
* [#8198](https://github.com/apache/nuttx/pull/8198) xtensa: esp32s2: Add support to efuse 
* [#8070](https://github.com/apache/nuttx/pull/8070) xtensa: esp32s3: Add initial support for touch pad polling 
* [#8446](https://github.com/apache/nuttx/pull/8446) xtensa: esp32s3: Add pwm support using LEDC peripheral 
* [#8458](https://github.com/apache/nuttx/pull/8458) xtensa: esp32s3: Add support for RTC IRQs 
* [#8473](https://github.com/apache/nuttx/pull/8473) xtensa: esp32s3: Add support for touch pad interrupts 
* [#8199](https://github.com/apache/nuttx/pull/8199) xtensa: esp32s3: Add support to efuse 
* [#8264](https://github.com/apache/nuttx/pull/8264) xtensa: esp32s3: Add support to RNG (random number generator) 
* [#8818](https://github.com/apache/nuttx/pull/8818) xtensa: esp32s3: add support to softAP (softAP and softAP + STA mode) 
* [#8771](https://github.com/apache/nuttx/pull/87598771) treewidextensa: esp32s3: addAdd DOWNLOADWi-Fi variabledriver as(STA unificationmode) offor curl call

Architectural Support

New Architecture Support

Markdown

ESP32-S3 
* [#8816#7873](https://github.com/apache/nuttx/pull/#88167873) risc-vxtensa: espressifesp32s3: AddEnable Espressifbooting chipfrom family support on top of esp-hal-3rdparty  MCUboot bootloader 
* [#8420#8640](https://github.com/apache/nuttx/pull/#84208640) risc-vxtensa: esp32c6esp32s3: Add ESP32-C6 basic support Define syscall table to enable using ROM functions 
* [#8466#7987](https://github.com/apache/nuttx/pull/#84667987) risc-vxtensa: hpm6750esp32xx: add hpmicro chip

Improvements

markdown

 Clear the timer interrupt to avoid losing the next interrupt

Driver Support

New Drivers

...

Markdown

* [#8166](https://github.com/apache/nuttx/pull/8166) ESP32: Enable the allocation of Userspace heap exclusively in SPI RAM under Flat mode 

	Breaking change: ESP32_SPIRAM no longer auto selects XTENSA_IMEM_USE_SEPARATE_HEAP.
	XTENSA_IMEM_USE_SEPARATE_HEAP is now selected by ESP32_IMM_HEAP, which in turn is not enabled by default.

	Drivers that previously relied on XTENSA_IMEM_USE_SEPARATE_HEAP now bring in ESP32_IMM_HEAP if ESP32_SPIRAM is also selected, with the notable exception from ESP32_WIFI.

	ESP32_WIFI previously used XTENSA_IMEM_USE_SEPARATE_HEAP for allocating dynamic data into Internal RAM via a specific API. 
	With this PR, there is now an alternative approach using MM_KERNEL_HEAP. So it is up to the user to either select ESP32_IMM_HEAP or MM_KERNEL_HEAP.
	In order to keep the current behavior, custom board users shall select ESP32_IMM_HEAP on Kconfig.  

* [#7525](https://github.com/apache/nuttx/pull/7525) Improvements in TCP connections allocation. 

	This is an attempt to fix the issues reported in #6960:

    Only a single connection is allocated, the one actually needed.
    In tcp_free() the connection is actually deallocated, instead of leaving it existing forever in the list.

	This is only the first step, possibly with more to come (list of pre-allocated connections, maximum connections limit etc).

	For the moment, this PR handles only TCP, till we determine all the details.
	Then the fix will be copied to all other connections that use similar logic.

* [#8691](https://github.com/apache/nuttx/pull/8691) drivers/serial: Echo input in driver layer 
* [#8846](https://github.com/apache/nuttx/pull/8846) drivers/pty: Echo input by default

	Align the pty behavior to linux/bsd,
	Also fix the ECHO issue with microadb after #8691.
	adb shell will echo normally with this patch.

* [#8235](https://github.com/apache/nuttx/pull/8235) board: Pass the assertion expression to board_crashdump too

* [#8717](https://github.com/apache/nuttx/pull/8717) arch/armv8-m: DSP extension is optional 
	The DSP extension is optional for armv8-m cores, so it should be explicitly set by chip configuration.
	Otherwise this can lead to hard to debug hardfaults for cores that do not support DSP.
	Breaking change for out-of-tree armv8-m chips.

* [#8378](https://github.com/apache/nuttx/pull/8378) tools/makefile: silent all compile output 
	In order to make compilation warnings and errors easier to be found out,
	this commit will disable the printing of the compilation process as much
	as possible, and also if you want to restore the log information of the
	compilation process, please enable verbose build on command line:

	$ make V=0
	OR
	$ make V=1

	| V=0:   Exit silent mode
	| V=1,2: Enable echo of commands
	| V=2:   Enable bug/verbose options in tools and scripts

* [#8623](https://github.com/apache/nuttx/pull/#8623) include/signal.h:Expanding SIGNAL to be consistent with Linux 
	build breaks if CONFIG_SCHED_HAS_PARENT is not defined because SIGCHLD will collide with the new values.

...

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