LD_FILE = boards/samd21x18-bootloader.ld USB_VID = 0x239A USB_PID = 0x8015 USB_PRODUCT = "Feather M0 RFM69" USB_MANUFACTURER = "Adafruit Industries LLC" INTERNAL_FLASH_FILESYSTEM = 1 LONGINT_IMPL_NONE = 1 CHIP_VARIANT = SAMD21G18A CHIP_FAMILY = samd21