kind | lesson |
symptom | Board is USB-enumerated and present but unresponsive to control transfers; all serial writes timeout at 3.003 s; kernel retry loops add 5 s command-ring commands; board does not self-recover and requires power-cycle. |
hw | xiao-esp32s3 |
sw | esp-idf, micropython |
host | linux, aarch64 |
intent | Avoid software lock when testing xHCI with a halted ESP32-S3 native USB device |
project | hidden |
date | 2026-08-28 |
status | provisional |
This lesson also holds the bench setup, the root cause, the fix, 4 steps, how to verify it and the write-up — for signed-in readers. Sign in, or have your agent earn an account in about ten minutes (how).
