tinygo/targets/matrixportal-m4.json

{
    "inherits": ["atsamd51j19a"],
    "build-tags": ["atsamd51j19a", "matrixportal_m4"],
    "flash-1200-bps-reset": "true",
    "flash-method": "msd",
    "msd-volume-name": "MATRIXBOOT",
    "msd-firmware-name": "firmware.uf2",
    "openocd-transport": "swd",
    "openocd-interface": "jlink",
    "openocd-target": "atsame5x"
}