hi first time using this adafruit. error keeps appearing cant upload a new sketch. already installed adafruit drivers. and correct board in board manager. i also tried grounding dfu pin nothing happens, need your help im very new to this,
Upgrading target on COM3 with DFU package C:\Users\axL\AppData\Local\Temp\arduino_build_392042\sketch_feb26a.ino.zip. Flow control is disabled, Single bank, Touch disabled
Timed out waiting for acknowledgement from device.
Failed to upgrade target. Error is: Attempting to use a port that is not open
Traceback (most recent call last):
File "nordicsemi\__main__.py", line 294, in serial
File "nordicsemi\dfu\dfu.py", line 235, in dfu_send_images
File "nordicsemi\dfu\dfu.py", line 206, in _dfu_send_image
File "nordicsemi\dfu\dfu_transport_serial.py", line 213, in send_firmware
File "nordicsemi\dfu\dfu_transport_serial.py", line 241, in send_packet
File "site-packages\serial\serialwin32.py", line 304, in write
serial.serialutil.SerialException: 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.