XIAO nRF52840 NFC Antenna Insights

Products & Technology XIAO
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9

loading library from /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/Spi_Flash: invalid library: no header files found
FQBN: Seeeduino:mbed:xiaonRF52840
Using board ‘xiaonRF52840’ from platform in folder: /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3
Using core ‘arduino’ from platform in folder: /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3

Detecting libraries used…
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/defines.txt @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/cxxflags.txt -DARDUINO_ARCH_NRF52840 -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -w -x c++ -E -CC -DARDUINO=10607 -DARDUINO_SEEED_XIAO_NRF52840 -DARDUINO_ARCH_MBED -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=1 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated-avr-comp -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib/hal_t2t -iprefix/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/includes.txt /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp -o /dev/null
Alternatives for NFCT.h: [[email protected]]
ResolveLibrary(NFCT.h)
→ candidates: [[email protected]]
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/defines.txt @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/cxxflags.txt -DARDUINO_ARCH_NRF52840 -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -w -x c++ -E -CC -DARDUINO=10607 -DARDUINO_SEEED_XIAO_NRF52840 -DARDUINO_ARCH_MBED -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=1 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/NFC/src -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated-avr-comp -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib/hal_t2t -iprefix/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/includes.txt /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp -o /dev/null
Using cached library dependencies for file: /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/NFC/src/NFCT.cpp
WARNING: library NFC claims to run on nrf52 architecture(s) and may be incompatible with your current board which runs on mbed architecture(s).
Generating function prototypes…
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/defines.txt @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/cxxflags.txt -DARDUINO_ARCH_NRF52840 -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -w -x c++ -E -CC -DARDUINO=10607 -DARDUINO_SEEED_XIAO_NRF52840 -DARDUINO_ARCH_MBED -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=1 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/NFC/src -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated-avr-comp -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib/hal_t2t -iprefix/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/includes.txt /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp -o /private/var/folders/gb/0rq8th213_n7m3dm7qgh4fx40000gn/T/2717861616/sketch_merged.cpp
/Users/elliottlambertparsons/Library/Arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c+±kinds=svpf --fields=KSTtzns --line-directives /private/var/folders/gb/0rq8th213_n7m3dm7qgh4fx40000gn/T/2717861616/sketch_merged.cpp
Compiling sketch…
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/defines.txt @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/cxxflags.txt -DARDUINO_ARCH_NRF52840 -MMD -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -DARDUINO=10607 -DARDUINO_SEEED_XIAO_NRF52840 -DARDUINO_ARCH_MBED -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=0 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840 -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/NFC/src -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/api/deprecated-avr-comp -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib -I/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib/hal_t2t -iprefix/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/includes.txt /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp -o /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp.o
Compiling libraries…
Compiling library “NFC”
Using previously compiled file: /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/libraries/NFC/NFCT.cpp.o
Compiling core…
Using previously compiled file: /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/core/variant.cpp.o
Using precompiled core: /Users/elliottlambertparsons/Library/Caches/arduino/cores/Seeeduino_mbed_xiaonRF52840_d0a97f57c02b70ce731c209c462debe3/core.a
Linking everything together…
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -E -P -x c /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/linker_script.ld -o /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/linker_script.ld
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -L/Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8 -Wl,–gc-sections -w -Wl,–as-needed @/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/ldflags.txt -T/Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/linker_script.ld -Wl,-Map,/Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.map --specs=nosys.specs -o /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.elf /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch/sketch_mar11a.ino.cpp.o /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/libraries/NFC/NFCT.cpp.o /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/core/variant.cpp.o -Wl,–whole-archive /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/cores/arduino/mbed/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_SDK_15_0/components/nfc/t2t_lib/nfc_t2t_lib_gcc.a /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/…/…/cores/Seeeduino_mbed_xiaonRF52840_d0a97f57c02b70ce731c209c462debe3/core.a /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/libs/libmbed.a /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/libs/libcc_310_core.a /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/libs/libcc_310_ext.a /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/variants/SEEED_XIAO_NRF52840/libs/libcc_310_trng.a -Wl,–no-whole-archive -Wl,–start-group -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys -Wl,–end-group
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-objcopy -O binary /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.elf /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.bin
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-objcopy -O ihex -R .eeprom /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.elf /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.hex
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/tools/adafruit-nrfutil/macos/adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.hex /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.zip
Zip created at /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.zip

Using library NFC at version 1.0 in folder: /Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/libraries/NFC
/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-size -A /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.elf
Sketch uses 87536 bytes (10%) of program storage space. Maximum is 811008 bytes.
Global variables use 44384 bytes (18%) of dynamic memory, leaving 193184 bytes for local variables. Maximum is 237568 bytes.
Performing 1200-bps touch reset on serial port /dev/cu.usbmodem141101
Waiting for upload port…
No upload port found, using /dev/cu.usbmodem141101 as fallback
“/Users/elliottlambertparsons/Library/Arduino15/packages/Seeeduino/hardware/mbed/2.9.3/tools/adafruit-nrfutil/macos/adafruit-nrfutil” --verbose dfu serial -pkg “/Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.zip” -p /dev/cu.usbmodem141101 -b 115200 --singlebank
Upgrading target on /dev/cu.usbmodem141101 with DFU package /Users/elliottlambertparsons/Library/Caches/arduino/sketches/52386E8CE59F93C3083B72C146E7A7F8/sketch_mar11a.ino.zip. Flow control is disabled, Single bank, Touch disabled
Opened serial port /dev/cu.usbmodem141101
Starting DFU upgrade of type 4, SoftDevice size: 0, bootloader size: 0, application size: 87544
Sending DFU start packet
Sending DFU init packet
Sending firmware file
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Activating new firmware
Device programmed.

DFU upgrade took 5.889823913574219s