apache/nuttx

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Apache NuttX is a mature, real-time embedded operating system (RTOS)

Stars: 4k
Forks: 1.7k
Open beginner issues: 7
Indexed issues: 627
Avg merge: 1d 21h
Merged PRs (30d): 241

Dominant language: C
License: Apache-2.0
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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623 open issues indexed

[BUG] ESP32-C3: stale IRQ handle after teardown causes use-after-free on repeated GDMA allocation Open

Arch: risc-v Area: Drivers Area: Memory Management OS: Mac Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 72/100

apache/nuttx#20216 · 1 comment · 1 reaction · Opened Sep 21, 2026
[FEATURE] STM32H5 OTP word read/write (and eFuse driver) Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

apache/nuttx#20188 · 1 reaction · Opened Sep 18, 2026
[BUG] ESP32S3 panics when SPI CS or MISO pins are set to -1 Open

Arch: xtensa Area: Drivers OS: Linux Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

apache/nuttx#20186 · 3 comments · Opened Sep 18, 2026
[HELP] error building for rv-virt:nsh64 Open

Community: Question

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#20154 · 4 comments · Opened Sep 15, 2026
[HELP] New to this : trying to run it on qemu under wsl Open

Community: Question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/nuttx#20113 · 6 comments · Opened Sep 11, 2026
[FEATURE] Add kernel build tests for CI Open

Type: Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/nuttx#20031 · 1 comment · Opened Sep 1, 2026
[FEATURE] Introduce a "new" image format for espressif devices. Open

Type: Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/nuttx#19994 · 11 comments · Opened Aug 28, 2026
[HELP] How to support sleep in microsecond? Open

Community: Question

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#19908 · 1 comment · Opened Aug 20, 2026
[HELP] What is the pre-condition to run gprof? Open

Community: Question

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#19906 · 4 comments · Opened Aug 20, 2026
[BUG] Possible nullptr dereference in /net/tcp/tcp_timer.c Open

Arch: risc-v Area: Networking OS: Windows Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

apache/nuttx#19849 · 1 comment · Opened Aug 14, 2026
[FEATURE] Chip adaptation project Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/nuttx#19838 · 10 comments · Opened Aug 13, 2026
[BUG] SD card failure causes high CPU load and starves lower prio threads Open

Arch: arm Area: Drivers OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/nuttx#19792 · Opened Aug 11, 2026
[HELP] How to add USB OTG driver for the SOC into Nuttx? Open

Community: Question

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/nuttx#19756 · 1 comment · Opened Aug 10, 2026
[BUG] hartid and cpuid mismatch for RISCV when CONFIG_ARCH_RV_CPUID_MAP is configured Open

Arch: risc-v Area: Kernel OS: Linux Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/nuttx#19713 · 2 comments · Opened Aug 6, 2026
[BUG] error in building add_subdirectory for nuttx Open

Arch: simulator Area: Build system OS: Linux Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 56/100

apache/nuttx#19697 · 6 comments · Opened Aug 5, 2026
[HELP] What interface should be used for LCD display in MIPS SOC? Open

Community: Question

Difficulty 5/5 Over a week Newbie friendliness 30/100

apache/nuttx#19679 · 5 comments · Opened Aug 4, 2026
[BUG] i3c i3c_master_reattach_i3c_dev Duplicate configuration of I3C_ADDR_SLOT_I3C_DEV Open

Arch: arm Area: Drivers OS: Other Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/nuttx#19580 · 4 comments · Opened Jul 30, 2026
STM32 M0 ADC: adc_sampletime_cfg() passes generic adc_dev_s instead of dev->ad_priv Open

Arch: all Area: Drivers OS: Linux Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/nuttx#19554 · 3 comments · Opened Jul 27, 2026
[Analysis] CMake vs. Make Build-System Gap Analysis Open

Community: Question

Difficulty 5/5 Over a week Newbie friendliness 38/100

apache/nuttx#19549 · 1 comment · Opened Jul 27, 2026
[FEATURE] chip adaptation and auto gen Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#19511 · 1 comment · Opened Jul 23, 2026
[BUG] CMake build: CONFIG_PIC gives ELF applications contradictory register flags and no -fpic, and never reserves r10 in the base firmware Open

Arch: arm Area: Build system OS: Mac Type: Bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/nuttx#19509 · 1 comment · Opened Jul 23, 2026
[BUG] usbmsc: GET MAX LUN / MS-RESET EP0 stall in composite mode — wIndex checked against compile-time USBMSC_INTERFACEID instead of dynamic devinfo.ifnobase Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

apache/nuttx#19435 · 8 comments · Opened Jul 14, 2026
[HELP] What is the right format should be used in `part_procfs_read`? Open

Community: Question

Difficulty 3/5 1-2 days Newbie friendliness 48/100

apache/nuttx#19424 · Opened Jul 13, 2026
[BUG] NuttX SIM ALSA is not playing sound Open

Arch: all Arch: simulator Area: Drivers OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#19413 · 3 comments · Opened Jul 12, 2026
[HELP] Unexpected result of scheduling testing. Open

Community: Question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/nuttx#19370 · 2 comments · Opened Jul 8, 2026
[BUG] I2S operations are not adhered to by lower-half implementations Open

Arch: all Area: Drivers OS: Linux Type: Bug

apache/nuttx#19309 · 5 comments · 1 reaction · 2 assignees · Opened Jul 4, 2026
sched/task: nxtask_exit() frees the wrong TCB on non-SMP when a higher-priority task holds the ready-to-run head Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

apache/nuttx#19308 · Opened Jul 4, 2026
[BUG] arch/arm/rp23xx: SPI DMA completion waits are uninterruptible with no timeout — one stalled transfer wedges the whole network stack Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/nuttx#19305 · Opened Jul 4, 2026
[BUG] net/w5500: any spurious event permanently fences the interface (no recovery, no carrier indication) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#19304 · Opened Jul 4, 2026
[FEATURE] Unification of STM32 Nucleo boards Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#19296 · Opened Jul 4, 2026
[BUG] Raspberry Pi Pico W has WiFi connection issues/crashing Open

Arch: arm Area: Networking OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#19254 · 2 comments · Opened Jul 1, 2026
[BUG] RP2040 issues running OSTest Open

Arch: arm Area: Applications Area: OS Components OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/nuttx#19253 · Opened Jul 1, 2026
[FEATURE] RPi4B audio support over I2S Open

Type: Enhancement

apache/nuttx#19252 · 2 comments · 1 assignee · Opened Jul 1, 2026
[FEATURE] Update Graphic Configs: LVGL Kconfig Open

Type: Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/nuttx#19243 · 1 comment · Opened Jun 30, 2026
[HELP] Note driver doesn't have g_note_info anymore Open

Community: Question

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/nuttx#19226 · Opened Jun 26, 2026
[BUG] ESP32-C3: ELF module execution fails with Instruction access fault Open

Arch: risc-v Area: Board support OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

apache/nuttx#19120 · 1 comment · Opened Jun 11, 2026
[HELP] Nuttx porting: Unexpected exception vector in MIPS32 Open

Community: Question

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/nuttx#19017 · 4 comments · Opened Jun 2, 2026
[Info] CI Builds are slow, probably caused by Other Apache Projects Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

apache/nuttx#18906 · 1 comment · 1 reaction · Opened May 20, 2026
[FEATURE] Re-usable 16550 UART driver Open

Type: Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/nuttx#18895 · Opened May 18, 2026
[FEATURE] "portable" implementation for POSIX's uint64_t time. Open

Arch: avr Arch: avr32 Arch: avr8 Arch: mips Arch: risc-v Arch: simulator Arch: x86 Arch: xtensa Arch: z16 Arch: z80 Area: Documentation Area: Kernel Area: Modularity Area: Posix Area: Standards Board: all Type: Enhancement Type: Improvement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#18849 · Opened May 4, 2026
[FEATURE] Re-usable PL011 UART driver Open

Type: Enhancement

apache/nuttx#18836 · 2 comments · 2 reactions · 1 assignee · Opened May 2, 2026
[BUG] ESP32C3 implicit declaration of `ATOMIC_VAR_INIT` Open

Arch: risc-v Area: Board support OS: Linux Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 50/100

apache/nuttx#18805 · 11 comments · Opened Apr 25, 2026
[BUG] Issues on NXFFS Open

Arch: risc-v Area: File System OS: Linux Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/nuttx#18803 · 2 comments · Opened Apr 24, 2026
[MULTICAST FORWARDING] Multicast forwarding lacks receiver-aware decision making Open

Arch: all Area: Networking OS: Linux Type: Bug

Difficulty 5/5 Over a week Newbie friendliness 30/100

apache/nuttx#18762 · 2 comments · Opened Apr 18, 2026
[FEATURE] Fix security fault: plain text WiFi SSID/PASSWORD stored at /data/wapi.conf Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/nuttx#18710 · 3 comments · Opened Apr 10, 2026
[FEATURE] NuttX Build Monitor Open

Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#18659 · 1 comment · 1 reaction · Opened Apr 1, 2026
[LCD] Move LCD pin definitions to Kconfig. Open

Area: Specific Peripheral

apache/nuttx#18580 · 13 comments · 1 assignee · Opened Mar 23, 2026
[Testers Needed] Building PRs in Our Own Repos Open

Community: Question

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

apache/nuttx#18568 · 21 comments · 2 reactions · Opened Mar 20, 2026
[GSoC 2026] Providing X11 Support Using NanoX Open

Community: Question gsoc2026

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/nuttx#18566 · 96 comments · 1 reaction · Opened Mar 19, 2026
[BUG] ARM32 Idle stack underaligned Open

Arch: arm Area: Board support OS: Linux Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 65/100

apache/nuttx#18558 · 1 comment · Opened Mar 18, 2026

apache/nuttx

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