New proposed feature: write-locking via 4-digit PIN

[surfdado]

I want to have a simple method to prevent accidental writes to the wrong VESC by using a 4-digit PIN to write-lock your firmware. The more VESCs we have out there the more likely it is to happen that someone will change your boards settings (unintentionally or not)

Why not use “pairing”?
Pairing is a tool-side mechanism that isn’t obeyed by 3rd party tools. Additionally pairing is UUID based making it impossible to go from memory if you quickly want to enable a friend’s phone to access your board, e.g. during a large event.

Please see below for a full spec of the proposed feature :
https://pev.dev/t/new-feature-spec-pin-locking/815

[surfdado]

Note: I have started working on this and will submit a pull request once I have a first working version

[surfdado]

See RFQ pull request: #622