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Use DAPLink vendor command for serial#103

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microbit-matt-hillsdon merged 1 commit into
appsfrom
use-daplink-serial
Mar 3, 2026
Merged

Use DAPLink vendor command for serial#103
microbit-matt-hillsdon merged 1 commit into
appsfrom
use-daplink-serial

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@microbit-matt-hillsdon

@microbit-matt-hillsdon microbit-matt-hillsdon commented Mar 3, 2026

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In Brave we can fail to parse the serial and therefore to tell the board version (it anonomises the device serial number) and we need this information to flash the correct hex.

This matches MakeCode's approach.

I confirmed that identical serials are found in Chrome for V1 and V2 via this and the old method.

I don't think the fallback should come into play but leaving it for now. This feature has been in DAPLink since WebUSB support has been in DAPLink.

See #57

In Brave we can fail to parse the serial and therefore to tell the board
version (it anonomises the device serial number) and we need this information
to flash the correct hex.

This matches MakeCode's approach.

I confirmed that identical serials are found in Chrome for V1 and V2 via this
and the old method.

I don't think the fallback should come into play but leaving it for now. This
feature has been in DAPLink since WebUSB support has been in DAPLink.

Tweak format command to be less verbose.
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cloudflare-workers-and-pages Bot commented Mar 3, 2026

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@microbit-matt-hillsdon

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Confirmed I can connect in Brave (on Mac, but that repro'd it before) with all settings reset to defaults.

@microbit-matt-hillsdon
microbit-matt-hillsdon merged commit d8d62cf into apps Mar 3, 2026
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microbit-matt-hillsdon deleted the use-daplink-serial branch March 3, 2026 10:57
microbit-matt-hillsdon added a commit to microbit-foundation/python-editor-v3 that referenced this pull request Apr 29, 2026
This contains the pre-1.0 breaking API changes and USB serial re-work.

We'll run this on Python beta for a bit to build confidence as the BLE code has
had far more real use than the USB changes.

This should improve serial issues after first physical connection + flash and
extra serial from previous programs leaking into subsequent ones.

Relevant fixes:
- Workaround for the bad response issue - microbit-foundation/microbit-connection#72
- Use DAPLink vendor command for serial number - microbit-foundation/microbit-connection#103
- Inline CMSIS-DAP code, fix and test serial issues - microbit-foundation/microbit-connection#110
- Fix UICR not updated during WebUSB partial flashing - microbit-foundation/microbit-connection#113
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