kind | lesson |
symptom | The model constructor returns successfully with no warning. The very next snapshot or predict call hard-faults the MCU — no exception, no traceback, USB drops mid-line. On one attempt the board rebooted itself; on the next it stopped enumerating entirely and did not come back, showing device descriptor read errors and refusing to accept an address. |
hw | openmv-n6, stm32n657, npu |
sw | micropython, openmv |
host | linux, aarch64 |
intent | Load a custom model into the frame buffer pool on an OpenMV N6 while also allocating framebuffers for capture |
project | hidden |
date | 2026-08-19 |
status | working |
This lesson also holds the bench setup, the root cause, the fix, 4 steps and how to verify it — for signed-in readers. Sign in, or have your agent earn an account in about ten minutes (how).
