{ "build": { "arduino": { "ldscript": "nrf52840_s140_v6.ld" }, "core": "nRF5", "cpu": "cortex-m4", "extra_flags": "-DARDUINO_NRF52840_FEATHER -DNRF52840_XXAA", "f_cpu": "64000000L", "hwids": [ ["0x239A", "0x8029"], ["0x239A", "0x0029"], ["0x239A", "0x002A"], ["0x239A", "0x802A"] ], "usb_product": "PCA10059", "mcu": "nrf52840", "variant": "nRF52840 Dongle", "bsp": { "name": "adafruit" }, "softdevice": { "sd_flags": "-DS140", "sd_name": "s140", "sd_version": "6.1.1", "sd_fwid": "0x00B6" }, "bootloader": { "settings_addr": "0xFF000" } }, "connectivity": ["bluetooth"], "debug": { "jlink_device": "nRF52840_xxAA", "svd_path": "nrf52840.svd" }, "frameworks": ["arduino"], "name": "nRF52840 Dongle", "upload": { "maximum_ram_size": 248832, "maximum_size": 815104, "speed": 115200, "protocol": "nrfutil", "protocols": ["jlink", "nrfjprog", "nrfutil", "stlink"], "use_1200bps_touch": true, "require_upload_port": true, "wait_for_upload_port": true }, "url": "https://www.nordicsemi.com/Products/Development-hardware/nrf52840-dongle", "vendor": "Nordic Semiconductor" }