Research window: Past 24 hours (2026-09-03 11:18 ~ 2026-09-04 11:18 Beijing Time) Sources: RT-Thread official news API, GitHub (org: RT-Thread / main repo commits+PR / packages index / topic:rt-thread ecosystem repos), Google News aggregation (zh-CN / en-US, via proxy), OSChina open-source news (see Appendix: Source Verification Table for details)

Index

• I. Kernel & Version Updates
  • In progress: CAN framework refactor PR #11779 enters review discussion, maintainer states no separate CAN_V2 will be created (09-03)
  • No new merges in main repo during window, multiple PRs remain active in review queue (09-04)
• II. Official & Community Events
  • RT-Thread announces 2026 Shanghai Open Source Software Application Innovation Competition “AI + Industrial Software” track: industrial quality inspection AI toolchain (09-03)
  • Official news API sees no new entries for fifteenth consecutive day, elexcon 2026 countdown at 5 days (09-04)
• III. Ecosystem & Vendor Adaptation
  • canopennode-rtt mainline adds CiA402 multi-axis and PP/PV/Homing motion control support (09-03 ~ 09-04)
• IV. Summary & Trend Observations
• Appendix: Source Verification Table

I. Kernel and Version Updates

1.1 In Progress: CAN Framework Refactor PR #11779 Enters Review Discussion, Maintainer States No Separate CAN_V2 Will Be Built

Date: 2026-09-03 (peak review discussion day; thread continued from 09-02)　Source: PR #11779

The Generic CAN framework structural refactor PR covered yesterday (submitted by wdfk-prog, 2 commits, +2902/-1308) entered substantive review within the window: maintainer CYFS3 asked at 09-02 22:10 whether “other BSPs also need to re-adapt can”; the author responded at 09-03 08:26 that they do not — the STM32 bxCAN changes only add support for RT_CAN_CMD_ABORT_TX, the rest is CI formatting and optimization, and the framework design already handles compatibility; at 09-03 16:39 the review issued a “Request changes” opinion, the key point being that the current implementation changes the runtime contract between Generic CAN and all BSPs while only migrating STM32 bxCAN, which does not yet satisfy the compatibility promise that “other BSPs need no adaptation”; subsequently at 17:47 CYFS3 explicitly stated: maintaining a separate CAN_V2 framework is not recommended (maintenance cost too high), and interested developers are encouraged to jointly push this PR toward merge. Currently 8 comments, PR still open, merge strategy still under negotiation, but the refactor direction itself is not questioned and has maintainer endorsement.

1.2 No New Merges in Main Repo Within Window, Multiple PRs Remain Active in Review Queue

Date: 2026-09-04　Source: org:RT-Thread repository list (commits / pulls API)

No new commits merged into the main repo within the window (quiet after #11776 on the morning of 09-03), release remains v5.2.2 (2025-10-31). Open-source PRs worth noting in the review queue: #11775 ([bsp][c908] adds rt-smart and MMU Sv39/48 support for QEMU c908, updated 09-04 11:21 Beijing time), #11772 ([components][asan] heap runtime AddressSanitizer), #11774 ([sal] SIOCGIFCONF buffer overflow fix), #11689 ([stm32] SPI adds BDMA support). All remain open pending merge; no new PRs were created within the window, a normal accumulation period in review throughput.

II. Official and Community Activities

2.1 RT-Thread Announces 2026 Shanghai Open Source Software Application Innovation Competition Topic: Ruìqíng Platform Toolchain for Industrial Quality Inspection AI

Date: 2026-09-03　Source: OSChina news (registration entry oschina.net/os2026)

RT-Thread proposed the topic “Lightweight Adaptation and Low-Code Deployment Optimization of Pre-Trained Vision Models Based on the Ruìqíng Industrial Development Platform” in the AI + Industrial Software track of the “2026 Shanghai Open Source Software Application Innovation Competition.” The topic targets the “last mile” of industrial quality inspection deployment: the Ruìqíng industrial platform ships with a high-real-time industrial kernel and the NCNN inference framework (natively supporting YOLOv3 general object detection), but lacks on-site data collection and sample annotation capabilities, does not support importing custom industrial pre-trained models, and deployment relies on hand-written code. The competition task requires, without modifying the platform’s real-time kernel, lightweight completion of a four-stage toolchain — data collection and normalization, online defect sample annotation, custom model quantization and operator compatibility adaptation, and low-code one-click deployment — delivering a runnable demo, judged on four dimensions: tool completeness / platform adaptability / model optimization effectiveness / ease of use. Registration closes October 11, the finals are held in Shanghai on October 24, winning projects share a 1 million RMB prize pool (cash, Tokens, large model APIs, etc.), and have the opportunity to be selected into the Shanghai open-source project cultivation program. This is one of the few substantive external actions during the official news silence period, reflecting RT-Thread’s use of a regional open-source competition to promote the Ruìqíng industrial platform ecosystem and developer recruitment.

2.2 Official News API Has No New Entries for the Fifteenth Consecutive Day, elexcon 2026 Countdown 5 Days

Date: 2026-09-04　Source: RT-Thread official news API

The official news API (rt_org category) still shows 5 old entries, the latest still the 2026-06-17 Abu Dhabi investment forum report, with no new entries for the fifteenth consecutive day. Multiple gnews supplementary checks ("RT-Thread" when:2d English, RT-Thread RTOS when:2d English, 睿擎 OR 睿赛德 when:3d Chinese): English queries returned 0 hits, Chinese returned only the OSChina topic report (already covered in 2.1) and a Phoenix News “Veteran Zhou visits humanoid robot data training center” — the latter’s body is actually a report on a visit to the Realman training center in Beijing Shougang Park, a fuzzy character-match noise for “睿尔曼/睿赛德,” excluded. The next external window is elexcon 2026 in Shenzhen on September 9-11 (RT-Thread exhibiting, 8-30 preview already covered), countdown 5 days; the continued pre-event silence period is expected pacing.

III. Ecosystem and Vendor Adaptation

3.1 canopennode-rtt Mainline Adds CiA402 Multi-Axis and PP/PV/Homing Support, Expanding Motion Control Capabilities

Date: 2026-09-04 (09:41 Beijing push; previous at 09-03 11:25 Beijing)　Source: wdfk-prog/canopennode-rtt

The topic:rt-thread ecosystem repository canopennode-rtt added two CiA402 (DS402 motion control profile) commits to the default branch within the window: 09-03 11:25 “add multi-axis device profile support” (9c8da59), 09-04 09:41 “add PP PV and homing mode support” (Profile Position / Profile Velocity positioning and velocity modes plus homing mode, 7f143ec). Connecting with the earlier event-driven mainline scheduling (09-01) and LSS runtime baud rate activation (08-27), the ds402/A04 feature branch evolution observed yesterday has merged into the mainline, with motion control functionality expanding from single-axis to multi-axis and typical positioning/velocity/homing modes. The repository author is simultaneously advancing the CAN framework refactor in the main repo (see 1.1), with “application layer (CANopenNode package extension) → framework layer (Generic CAN refactor)” advancing on two fronts; CAN remains the most active advancement mainline in the community.

IV. Summary and Trend Observations

• Official/Competition side: RT-Thread announced a topic in the AI + Industrial Software track of the 2026 Shanghai Open Source Software Application Innovation Competition (Ruìqíng platform completing the data collection-annotation-model adaptation-low-code deployment toolchain, registration closes 10-11, 1 million prize pool, 10-24 Shanghai finals), a substantive external action during the official news silence period; the official news API has no new entries for the 15th consecutive day, elexcon 2026 (9/9-11 Shenzhen) countdown 5 days.
• Kernel side: zero merges, zero new PRs within the window (accumulation period after #11776); CAN framework refactor PR #11779 entered review discussion, with a “Request changes” opinion appearing (cross-BSP compatibility dispute over migrating only STM32), maintainer CYFS3 explicitly declining a separate CAN_V2 framework and calling for the community to jointly advance — the refactor direction has maintainer endorsement, and the merge path is becoming clearer.
• Ecosystem side: canopennode-rtt mainline landed two commits for CiA402 multi-axis + PP/PV/Homing (09-03/09-04), expanding DS402 motion control capabilities, forming an “application layer + framework layer” dual line with the main repo framework refactor.
• Trend over the past three days (09-02 ~ 09-04): Tencent IoT SDK config PR, CAN framework refactor PR proposed (09-02) → CPPPATH hygiene merged #11776, competition topic announced, CiA402 multi-axis commit, CAN refactor PR review started (09-03) → CiA402 PP/PV/Homing commit, CAN refactor PR gains maintainer endorsement, official silence 15th day (09-04). The current advancement mainline is “deep CAN ecosystem advancement (application layer extension + framework layer refactor) + official competition developer operations.”

Appendix: Source Verification Table