The upload process in Chrome on Windows 10 is not completing.
The .elf file is produced in the temp dir but it looks like the transfer process is not happening. When the board mounts as a mass storage device the elf binary can be manually copied across and the code executes correctly.
Here's the Web Editor output
/home/builder/opt/arduino-builder/arduino-builder -compile -core-api-version 10611 -hardware /home/builder/opt/arduino-builder/hardware -hardware /home/builder/.arduino15/packages -tools /home/builder/opt/arduino-builder/tools -tools /home/builder/.arduino15/packages -built-in-libraries /home/builder/opt/libraries/latest -logger humantags -fqbn arduino:mbed_nano:nanorp2040connect -build-cache /tmp -build-path /tmp/926212828/build -verbose -prefs runtime.tools.arm-none-eabi-gcc.path=/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4 -prefs runtime.tools.bossac.path=/home/builder/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2 -prefs runtime.tools.dfu-util.path=/home/builder/.arduino15/packages/arduino/tools/dfu-util/0.10.0-arduino1 -prefs runtime.tools.openocd.path=/home/builder/.arduino15/packages/arduino/tools/openocd/0.11.0-arduino2 -prefs runtime.tools.rp2040tools.path=/home/builder/.arduino15/packages/arduino/tools/rp2040tools/1.0.2 -prefs runtime.tools.arduinoOTA.path=/home/builder/.arduino15/packages/arduino/tools/arduinoOTA/1.3.0 -prefs runtime.tools.linuxuploader.path=/home/builder/.arduino15/packages/arduino/tools/linuxuploader/1.5.1 -prefs runtime.tools.xtensa-esp32-elf-gcc.path=/home/builder/.arduino15/packages/esp32/tools/xtensa-esp32-elf-gcc/1.22.0-97-gc752ad5-5.2.0 -prefs runtime.tools.arm-linux-gcc.path=/home/builder/.arduino15/packages/arduino/tools/arm-linux-gcc/4.9.3 -prefs runtime.tools.CMSIS.path=/home/builder/.arduino15/packages/arduino/tools/CMSIS/4.5.0 -prefs runtime.tools.serial-discovery.path=/home/builder/.arduino15/packages/builtin/tools/serial-discovery/1.2.1 -prefs runtime.tools.avrdude.path=/home/builder/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8 -prefs runtime.tools.esptool.path=/home/builder/.arduino15/packages/esp8266/tools/esptool/2.5.0-3-20ed2b9 -prefs runtime.tools.i586-poky-linux-uclibc.path=/home/builder/.arduino15/packages/Intel/tools/i586-poky-linux-uclibc/1.6.2+1.0 -prefs runtime.tools.sketchUploader.path=/home/builder/.arduino15/packages/Intel/tools/sketchUploader/1.6.2+1.0 -prefs runtime.tools.CMSIS-Atmel.path=/home/builder/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0 -prefs runtime.tools.mkspiffs.path=/home/builder/.arduino15/packages/esp8266/tools/mkspiffs/2.5.0-3-20ed2b9 -prefs runtime.tools.x86-linux-gcc.path=/home/builder/.arduino15/packages/arduino/tools/x86-linux-gcc/7.2.0 -prefs runtime.tools.esptool_py.path=/home/builder/.arduino15/packages/esp32/tools/esptool_py/3.0.0 -prefs runtime.tools.nrf5x-cl-tools.path=/home/builder/.arduino15/packages/arduino/tools/nrf5x-cl-tools/9.3.1 -prefs runtime.tools.arduino101load.path=/home/builder/.arduino15/packages/Intel/tools/arduino101load/2.0.1 -prefs runtime.tools.ctags.path=/home/builder/.arduino15/packages/builtin/tools/ctags/5.8-arduino11 -prefs runtime.tools.arc-elf32.path=/home/builder/.arduino15/packages/Intel/tools/arc-elf32/1.6.9+1.0.1 -prefs runtime.tools.flashpack.path=/home/builder/.arduino15/packages/Intel/tools/flashpack/2.0.0 -prefs runtime.tools.xtensa-lx106-elf-gcc.path=/home/builder/.arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9 -prefs runtime.tools.core2-32-poky-linux.path=/home/builder/.arduino15/packages/Intel/tools/core2-32-poky-linux/1.6.2+1.0 -prefs runtime.tools.avr-gcc.path=/home/builder/.arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7 -libraries /tmp/926212828/custom -libraries /tmp/926212828/pinned /tmp/926212828/Blink
Using board 'nanorp2040connect' from platform in folder: /home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1
Using core 'arduino' from platform in folder: /home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1
Detecting libraries used...
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/defines.txt @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/cxxflags.txt -DARDUINO_ARCH_RP2040 -mcpu=cortex-m0plus -w -x c++ -E -CC -DARDUINO=10611 -DARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_MBED_NANO -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=1 -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated-avr-comp -iprefix/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/includes.txt /tmp/926212828/build/sketch/Blink.ino.cpp -o /dev/null
Generating function prototypes...
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/defines.txt @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/cxxflags.txt -DARDUINO_ARCH_RP2040 -mcpu=cortex-m0plus -w -x c++ -E -CC -DARDUINO=10611 -DARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_MBED_NANO -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=1 -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated-avr-comp -iprefix/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/includes.txt /tmp/926212828/build/sketch/Blink.ino.cpp -o /tmp/926212828/build/preproc/ctags_target_for_gcc_minus_e.cpp
/home/builder/.arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/926212828/build/preproc/ctags_target_for_gcc_minus_e.cpp
Compiling sketch...
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/defines.txt @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/cxxflags.txt -DARDUINO_ARCH_RP2040 -MMD -mcpu=cortex-m0plus -DARDUINO=10611 -DARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_MBED_NANO -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=0 -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated-avr-comp -iprefix/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/includes.txt /tmp/926212828/build/sketch/Blink.ino.cpp -o /tmp/926212828/build/sketch/Blink.ino.cpp.o
Compiling libraries...
Compiling core...
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/defines.txt @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/cxxflags.txt -DARDUINO_ARCH_RP2040 -MMD -mcpu=cortex-m0plus -DARDUINO=10611 -DARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_MBED_NANO -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=0 -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated-avr-comp -iprefix/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/includes.txt /home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/double_tap_usb_boot.cpp -o /tmp/926212828/build/core/double_tap_usb_boot.cpp.o
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -c -w -g3 -nostdlib @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/defines.txt @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/cxxflags.txt -DARDUINO_ARCH_RP2040 -MMD -mcpu=cortex-m0plus -DARDUINO=10611 -DARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_MBED_NANO -DARDUINO_ARCH_MBED -DARDUINO_LIBRARY_DISCOVERY_PHASE=0 -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated -I/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino/api/deprecated-avr-comp -iprefix/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/cores/arduino @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/includes.txt /home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/variant.cpp -o /tmp/926212828/build/core/variant.cpp.o
Using precompiled core: /tmp/core/core_arduino_mbed_nano_nanorp2040connect_7004d165bbd24d3844bbfb057d36f4d5.a
Linking everything together...
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++ -L/tmp/926212828/build -Wl,--gc-sections -w -Wl,--as-needed @/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/ldflags.txt -T/home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/linker_script.ld -Wl,-Map,/tmp/926212828/build/Blink.ino.map --specs=nosys.specs -o /tmp/926212828/build/Blink.ino.elf /tmp/926212828/build/sketch/Blink.ino.cpp.o /tmp/926212828/build/core/double_tap_usb_boot.cpp.o /tmp/926212828/build/core/variant.cpp.o -Wl,--whole-archive /tmp/926212828/build/../../core/core_arduino_mbed_nano_nanorp2040connect_7004d165bbd24d3844bbfb057d36f4d5.a /home/builder/.arduino15/packages/arduino/hardware/mbed_nano/2.1.1/variants/NANO_RP2040_CONNECT/libs/libmbed.a -Wl,--no-whole-archive -Wl,--start-group -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys -Wl,--end-group
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-objcopy -O binary /tmp/926212828/build/Blink.ino.elf /tmp/926212828/build/Blink.ino.bin
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-objcopy -O ihex -R .eeprom /tmp/926212828/build/Blink.ino.elf /tmp/926212828/build/Blink.ino.hex
/home/builder/.arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-size -A /tmp/926212828/build/Blink.ino.elf
Sketch uses 78712 bytes (0%) of program storage space. Maximum is 16777216 bytes.
Global variables use 53288 bytes (19%) of dynamic memory, leaving 217048 bytes for local variables. Maximum is 270336 bytes.
Upload started
Programming with: Serial
Restarting in bootloader mode
Flashing with command:C:/Users/pmiln/.arduino-create/arduino/rp2040tools/1.0.2/rp2040load.exe -v -D C:/Users/pmiln/AppData/Local/Temp/arduino-create-agent153017977/Blink.elf
rp2040load 1.0.1 - compiled with go1.15.8
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