I followed the guide https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-board-setup and it keeps giving me this error.
Failed to upgrade target. Error is: Attempting to use a port that is not open
Traceback (most recent call last):
File "__main__.py", line 296, in serial
File "dfu\dfu.py", line 235, in dfu_send_images
File "dfu\dfu.py", line 206, in _dfu_send_image
File "dfu\dfu_transport_serial.py", line 213, in send_firmware
File "dfu\dfu_transport_serial.py", line 241, in send_packet
File "serial\serialwin32.py", line 306, in write
serial.serialutil.PortNotOpenError: Attempting to use a port that is not open
Possible causes:
- Selected Bootloader version does not match the one on Bluefruit device.
Please upgrade the Bootloader or select correct version in Tools->Bootloader.
- Baud rate must be 115200, Flow control must be off.
- Target is not in DFU mode. Ground DFU pin and RESET and release both to enter DFU mode.
When I tried to burn the bootloader it gives me another error. Every forum post of this error usually seems to have more options in the tools menu maybe its something to do with that.
Failed to burn bootloader: cannot execute upload tool: exec: "C:\\Users\\<name>": file does not exist
