{ "inherits": ["atsame51j19a"], "build-tags": ["feather_m4_can"], "serial": "usb", "serial-port": ["acm:239a:80cd", "acm:239a:00cd"], "flash-1200-bps-reset": "true", "flash-method": "msd", "msd-volume-name": "FTHRCANBOOT", "msd-firmware-name": "firmware.uf2", "default-stack-size": 4096 }