Introduction

Raspberry Pi Pico Microcontrollers can expose a so-called “Reset” USB interface. When this is exposed, they can be reset into the bootrom and then updated (using the UF2 plugin).

GUID Generation

Raspberry Pi offers vendors to use the Raspberry Pi USB PID space. However, each vendor can chose their own VID/PID instead.

Devices from MNT Research use the standard USB DeviceInstanceId values, e.g.

• USB\VID_1209&PID_6D07
• USB\VID_1209&PID_6D07&REV_0001

Note that the VID is the shared https://pid.codes/1209/ VID.

Update Behavior

The runtime interface should use a DS-20 BOS descriptor with something like these as the contents:

Plugin=rp_pico
Flags=internal
Version=1.2.3
VersionFormat=triplet
Icon=computer

Devices are updated by triggering a reset, and then entering the Raspberry Pi Pico bootrom.

The bootrom speaks the UF2 protocol.

External Interface Access

This plugin requires read/write access to /dev/bus/usb.

Version Considerations

This plugin has been available since fwupd version 2.0.2.

Owners

Anyone can submit a pull request to modify this plugin, but the following people should be consulted before making major or functional changes:

• Lukas F. Hartmann: mntmn