{ "inherits": ["atsamd51g19a"], "build-tags": ["itsybitsy_m4"], "serial": "usb", "flash-1200-bps-reset": "true", "flash-method": "msd", "serial-port": ["239a:802b"], "msd-volume-name": ["ITSYM4BOOT"], "msd-firmware-name": "firmware.uf2" }