Monthly summary for 2026-01: Nuttx (apache/nuttx) work focused on ESP32/XTensa linker script improvements and RTC data placement to improve build reliability and boot flow for legacy IDF formats.

December 2025: Delivered a performance-focused feature for apache/nuttx that optimizes ESP-HAL 3rd-party handling to reduce downloads and speed up builds after cleaning. The change minimizes re-downloads when using nxtmpdir to cache esp-hal-3rdparty, resulting in faster distclean-driven rebuilds and quicker target provisioning for ESP32 devices. This work aligns with the ESP32 devkitc workflow and reduces time-to-test from code changes. The patch is captured in the associated commit for traceability and review.

July 2025: Delivered NVBLK, a new non-volatile memory block device driver with wear leveling and FAT filesystem support in the tiiuae/nuttx repository. Implemented within the MTD subsystem, NVBLK enables FAT operations on non-volatile memory and improves data durability. This work expands hardware compatibility and lays the foundation for reliable non-volatile storage in embedded environments, contributing to product stability and long-term data integrity.

April 2025 monthly summary focused on delivering network capability improvements, codebase simplifications, and deployment flexibility across Nuttx and Nuttx-apps. Key changes include ESP-NOW integration for Espressif Xtensa with board naming alignment, removal of ESPNOW pktradio support on ESP32 to reduce maintenance and footprint, ELF example filesystem documentation updates, and RomFS image generation support for external file systems.

Concise monthly summary for 2025-03 focusing on key features delivered, major bug fixes, impact, and technologies demonstrated. Highlights include delivery of ESP-NOW addressing and frame control enhancements, SixLoWPAN ICMPv6 frame replies for UDP without a listener, and WLAN build standardization across ESP32 devices; a critical fix to ICMP/ICMPv6 handling in UDP input. These efforts improve network reliability, prepare for future ciphered exchanges, and simplify configuration and maintenance across ESP32 boards.

February 2025 – tiiuae/nuttx: focus on strengthening ESP32-based networking with ESP-NOW and 6LoWPAN, plus reliability fixes in the 6LoWPAN/TCP/ICMP path. Delivered features and fixes with documentation, config defaults, and driver refactoring to improve maintainability and performance.

Concise monthly summary for 2025-01 focused on delivering ESP32 ESP-NOW based 6LoWPAN network support in nuttx, with a new C driver and configurable network parameters. The work enhances IoT mesh networking capabilities and broadens deployment options for ESP32-based devices.

Month 2024-12 highlights the delivery of BLE capabilities for the ESP32-C3 within Nuttx, supported by NimBLE and accompanied by documentation updates. This work expands platform reach, enabling BLE-enabled use cases for developers and customers leveraging ESP32-C3 in Nuttx.