tinygo/targets/mdbt50qrx-uf2.json

{
    "inherits": ["nrf52840", "nrf52840-s140v6-uf2"],
    "build-tags": ["mdbt50qrx"],
    "serial-port": ["239a:810b", "239a:810c"],
    "msd-volume-name": ["MDBT50QBOOT"]
}