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Espressif's notes on building a Zephyr BLE and SoftAP provisioning app with Cursor

Ricardo F. Tafas Jr of Espressif describes building Zephyr provisioning over BLE and SoftAP for the M5Stack ESP DualKey with Cursor. He tested each step on the bench through build, flash and UART traces. His practices include specs first, proving a module in a sample app, a journal of failed fixes and no edits to upstream Zephyr.

Open original source developer.espressif.com · Ricardo F. Tafas Jr (Espressif)

Claimed
Why this evidence label?

Describes bench testing with UART traces as ground truth, but the post shows only a kit photo and a process diagram, no logs.

How we check entries
Preview image for Espressif's notes on building a Zephyr BLE and SoftAP provisioning app with Cursor
The source's own preview image, from developer.espressif.com.

Briefing

The work produced an out-of-tree esp-provisioning module with a shell sample that works with Espressif's provisioning phone app, and product firmware that uses it. The loop he settled on is plan, execute, commit, test, then back to planning with the results instead of stacking fix-it prompts. Larger tasks used Cursor's Plan mode.

The agent kept editing upstream Zephyr code, such as adding tracing, until a rule made it ask first. Product policy leaked into the module's API, and plan history was lost because plans were discarded between commits. A journal.md of what had been tried kept the agent from repeating failed fixes.

“Code is cheap, judgment is not.”

Ricardo F. Tafas Jr (Espressif), in the source on developer.espressif.com

Tags

Agent

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