QUERY · ISSUE

stm32: Factory reset from code

openby TravisJoeopened 2019-06-05updated 2022-01-01

port-stm32

I believe factory reset should be available as an alternative to USR. USR might not be practical or accessible for custom boards or how the device might be enclosed or accessed.

This might also be related to ways to clear/format/erase the filesystem from code.

Basically recovery and housecleaning.

CANDIDATE · ISSUE

Pyboard: Cannot use safe mode and factory reset

closedby IlysvlVEizbropened 2022-04-13updated 2022-08-25

@dpgeorge
Firmwares with this problem:
pybv11-thread-20210902-v1.17.dfu and any newer
( including latest pybv11-thread-20220413-unstable-v1.18-330-gd242a9b7f.dfu)

This problem only appears in firmwares with threading feature.

Reproducible steps:

Hold down the USR switch.
While still holding down USR, press and release the RST switch.
Let go of the USR switch.

Specific phenomenon:

The green LED always keeps on.
PC cannot recognize pyboard.
No py script is run.

Also see #7935 and #7816

Assessment

Q Qwen · high

Issue #4832 is a feature request to implement factory reset functionality accessible from code (as an alternative to the USR button) for STM32 boards. Issue #8528 is a bug report about the USR+RST button combination failing to enter safe mode/factory reset on Pyboard v1.1 with threading firmware. While both issues concern factory reset functionality on STM32 ports, they address fundamentally different problems: #4832 requests a new feature (code-based reset), while #8528 reports a bug in existing hardware-based reset functionality. The candidate does not resolve the query's request for code-accessible factory reset.

Suggested action

Keep both issues open. #4832 remains a feature request for code-based factory reset. #8528 is a separate bug report about hardware reset failure that needs investigation and fix.

stm32: Factory reset from code

Pyboard: Cannot use safe mode and factory reset

Keyboard