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- To use micropython interfactive serial shell REPL prompt, see on this page.
- Micropython board demo video.
- Upload firmware hex by ST-link, no need reset pin
- Reboot board and connect by USB, it will format itself, two LEDs ON, this takes 3-5 seconds
- after this, U-disk will show up and sequential LED blink.
- Now can upload new sketch into it.